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Nortel Networks Welding System 411-2021-111 User's Manual

1. See Table 3 5 for RF Frame 1 See Table 3 8 for connection RMC TRU Shelf connection Antenna A Sector X A1 TX Main Control Channe olm Rx Duplexer ANT receive for Sector X 1 s Position 1 DPA 1 29 zb A8 Antenna 4 ge 23 lt Sector X co T X En lt B3 ol Diversity TRU DPA DER receive ATC 1 Shelf 1 B8 1 1 1 Le Da co Antenna rol Channel Sector Y r Sector Y cS lt A a TX Main fr lt A2 N 23 zi a A3 Duplexer ANT receive e 55 Position 2 i ES A8 Antenna lt m Sector Y TRU DPA lt B3 Diversity Shelf2 2 4 lt a 1 PPA8 2 2 LT LIS Fo Antenna rol Channel Sector Z u Ai al TX Main T tc 23 zb LS SH ax Duplexer ANT receive o 1 s o 28 Position 3 ED 2 Antenna m m Sector Z TRU DPA Bo dus ATC3 Shelf3 pun ive E receive B8 4 zi DPA 12 29 55 iva za Fe CE Frame ICRM HSMO 411 2021 111 Standard 01 01 June 1996 Cell Site Layouts 3 11 Figure 3 7 Bloc
2. RIP Connector J205 Rip Connector J206 METRO NT8X47BA METRO NT8X47BA TRU Port TRU Port RF Frame 1 i 0 2 0 Duplexe 3 1 4 1 5 2 6 2 i zs 7 3 8 3 9 4 10 4 11 5 12 5 N 13 6 14 6 JE 15 7 16 7 EIE EE 17 8 18 8 m 19 9 20 9 EE 21 10 22 10 23 11 24 11 DMS MTX DualMode Metrocell Cell Site Description 6 6 Datafilling a Metro Cell Site Figure 6 1 Example of Metro TRU datafill Frequency Assignment Example An example configuration is shown in Figure 6 1 In this example The ICRM virtual port card 0 is hardwired to the RIP Connector J205 and virtual port card 1 is hardwired to RIP Connector 7206 see Figure 6 2 Since port card 0 is hardwired to J205 it will be connected to all the TRUs with odd numbered Metro locations Refer to the Metro RF Frame Figure for the TRU numbering scheme Hence port card 1 which is hardwired to J206 will be connected to all the TRUs with even numbered Metro locations Five datafill tuples are shown in the example figure for e CCH e a Digital Locate Receiver DLR serving as the CCH backup in this example e an Analog Locate Receiver ALR can be assigned to any TRU and e two VCH TRU personalities The table in the figure shows the location of the five TRUs with respect to their Metro shelf locations
3. 1 22 TRU DPA ATC 1 Sector X RMC 1A TRU SHELF SPLITTER 1 TX Position 2 Rx Duplexer ANT lt Shelf 1 lt DPA 4 lt DPA 5 Sector 2 ATC3 Phasing Transformer on ATC3 RF Frame 2 TRU DPA ATC2 Shelt 2 lt 1 8 TRU 17 654321 TRU DPA Shelf 3 TRU SHELF SPLITTER 6 RMC 2A RMC 1B TX Position 2 RF Frame 2 Rx Duplexer ANT RMC 2B From RMC 3A A4 TRU SHELF SPLITTER 1 TRU SHELF SPLITTER 6 RMC 5A TX Duplexer Position 2 RF Frame 4 V V RMC 5B TRU SHELF SPLITTER 1 RMC 6A RMC 6B TRU SHELF SPLITTER 6 ICRM HSMO CE Frame Note For diagram clarity only RF Frames 1 and 2 are shown RF Frames 3 and 4 are connected and operated identically to that of RF Frames 1 and 2 respectively for Sectors U V and W Refer to Tables 3 13 and 3 15 for the complete cabling information continued TX Duplexer ANT Position 3 RF
4. 8 RF Frame Splitter Diversity antenna Sector X RMC 1B B8 shelf 2 splitter 4 Diversity antenna Sector Y RMC 2B B8 Splitter 5 Diversity antenna Sector Z RMC 3B B8 Splitter 6 Main antenna Sector X RMC 1 9 RF Frame Splitter 1 Main antenna Sector Y RMC2A Ag shelf Splitter 2 Main antenna Sector Z RMC 3A A9 Splitter 3 DMS MTX DualMode Metrocell Cell Site Description 3 20 Cell Site Layouts Table 3 9 RMC to splitter connections for a 120 STSR Metrocell with three RF Frames continued Sector Z From Through Diversity antenna Sector X RMC 1B B9 Diversity antenna Sector Y RMC 2B B9 Diversity antenna Sector Z RMC 3B B9 Component requirement Table 3 10 lists the components required for a 120 STSR Metrocell with one RF Frame and Table 3 11 lists the components required for a 120 STSR Metrocell with three RF Frames Both configurations require three Receive Table 3 10 Multicouplers RMC To RF Frame 3 TRU shelf 3 Splitter 4 Splitter 5 Splitter 6 Component requirement for a 120 STSR Metrocell with one RF Frame No of TRUs No of TRUs No of ATCs No of No of ICRM No of antennas per Sector Duplexers TCM Port cards 3108 9 to 24 3 3 2 3 TX RX 3 RX Note An additional TCM port card i
5. Shel 2 5 TRU 21 22 TRU 23 24 Breaker4 Breaker8 DPA 11 DPA 12 Breaker13 Coe Shelf pp em TRU PA Shef3 1 5 5 Breaker13 Breaker TRU 17 18 TRU 19 20 Breaker14 RMC Shelf DPA 9 DPA 10 one to six Breaker6 Breaker15 ATC Shelf 2 TRU 13 14 TRU 15 16 Breaker5 DPA7 DPA8 Breaker16 TRU PA Shelf 2 Breaker4 TRU 9 10 TRU 11 12 Breaker17 Breaker8 Breaker16 DPA 5 DPA 6 epe ICRM Shelf SS Sa Breaker3 Breaker18 ATC Shelf 1 TRU 5 6 TRU 7 8 Breaker2 DPA 3 DPA 4 Breaker19 Bank C TRU PA Shelf 1 H 7 1 Breaker TRU 1 2 TRU 3 4 Breaker20 DPA 1 DPA2 DMS MTX DualMode Metrocell Cell Site Description 5 6 Power and Grounding Requirements System power protection There are three levels of protection at a Metrocell cell site The first level is at the power plant which may consist of a hydraulic magnetic breaker or slow blow fuse This stage is not provided by Nortel The second level of protection is located in the RIP of the frames that consists of a magnetic breaker In some cases a third level of protection is implemented in the equipment shelf such as the TRU DPA shelf fans and the ATC shelf and usually consists of a faster blow fuse This arrangement isolates faults that occur lower down in the hierarchy from affecting circuits higher up Grounding UL CSA approval The North American electrical codes require that there be no current over the grounding conductors see C22 1 par 10 20
6. 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 DMS MTX DualMode Metrocell Cell Site Description 7 10 Frequency Plans 411 2021 111 Standard 01 01 June 1996 DualMode Metrocell Cell Site Des
7. TRU 3 TRU 7 TRU 4 TRU 8 TRU 2 TRU 6 TRU 3 TRU 7 TRU 2 TRU6 TRU 4 TRU 8 ITRU 1 TRU 5 TRU 2 TRU 6 ITRU 1 TRU 5 TRU 1 TRU 5 1 TRU 5 TRU 3 TRU 7 TRU 3 TRU 7 112 2 2 112 Note fifth RF Frame can be added for expanding three of the sectors to 24 channels 411 2021 111 Standard 01 01 June 1996 Cell Site Layouts 3 23 Figure 3 10 Block diagram of a 60 STSR Metrocell with two RF Frames See Table 3 12 for PA ATC connection RF Frame 1 cd HET QM PER Antenna Sector X TX i Control Channel lt a R8 c Main or Sector X XE y Duplexer ANT receive SE Position 1 e pP ES Br LJ E Antenna 22 po Sector X EG JB3 Diversity TRU DPA E 1 fs Shelf 1 B 1 oN Tu From 2 Ole RMC 6B B1 ot Hu co
8. ae e CCHINV N CCHKEY BACKUP MODE TERMATTR CARD PORT ALRAMPT 49 0 331 Y 0 AUTOTUNE COMBINED TRU2AN60 0 0 0 Table LCRINV LCRKEY CCHBACKED ADMODE TERMATTR PORT ALARMPT LCRTEST 49 0 Y 0 TDMA3 TRU2AN60 1 1 1 N 49 1 N ANALOG TRU2AN60 1 2 2 N Table VCHINV VCHKEY CHANNO ADMODE GROUP TRKMEMS TERMATTR CARD PORT ALARMPT XCVRSAT 49 1 289 TDMA3 000 1 101 201 TRU2AN60 0 1 1 DEFAULT 49 4 226 ANALOG TDMA3 001 4 104 204 TRU2AN60 1 3 4 DEFAULT Channel and Frequency ICRM location RF Frame location CCH 0 331 Card 0 Port 0 TRU Slot 1 LCR 0 DLR Card 1 Port 1 TRU Slot 4 LCR 1 ALR Card 1 Port 2 TRU Slot 6 VCH 1 289 Card 0 Port 1 TRU Slot 3 VCH 4 226 Card 1 Port 3 TRU Slot 8 Note J205 and J206 are cabled to the ICRM port cards as shown in Figure 6 2 411 2021 111 Standard 01 01 June 1996 Datafilling a Metro Cell Site 6 7 Figure 6 2 Example of Metro ICRM TRU hardwire configuration 4 5 6 7 8 Physical Port Card Slot Location 17 18 19 20 21 pled V8ZUX81N pled HOd 81 81 81 pled V8ZUX81N pled 81 pled 81 pled 81 pled p129 4 74 CHAN Logical Port Card Slot Locations Connector Assignments DMS MTX DualMode Metrocell Cell Site Description 6 8 Datafilling a Metro Cell Site
9. 1 T Antenna Control Channel Sector Y or Sector Y vt Le DAT an a S lt TX Main D we A2 Aj uplexer ANT receive re 35 UN Position 2 Antenna Bs m Sector Y ATC2 TRU DPA lt B3 Diversity Shelf 2 receive B8 ut 5 E mu ra a Fo Control Channel 1 Antenna or Sector Z u Sector Z Ew Al TX Main D 39 A2 EX zb A3 I Rx Duplexer ANT receive ga Ep Position 3 i 2e Antenna TRU DPA eg 8 Sector Z ATC3 Shelf3 lt B3 Diversity sees receive B8 um GE KC bP 2 22 el ES Frame ICRM HSMO continued DMS MTX DualMode Metrocell Cell Site Description 3 24 Cell Site Layouts Figure 3 10 Block diagram of a 60 STSR Metrocell with two RF Frames continued See Table 3 12 for See Table 3 14 for PA ATC connection RF Frame 2 RMC TRU Shelf connection E 08 TS A1 TX A2 Control Channel z RX D
10. 411 2021 111 Standard 01 01 June 1996 Appendix A DualMode Metrocell Cell Site Specifications System Configuration Channel capacity Locate capacity Control channel capacity Radio Frequency Radio frequency band Frequency stability Channel spacing Duty cycle PA power Maximum Adjustment range Up to 120 RF Channels for Omni cell sites Up to 8 16 or 24 RF Channels per sector for 120 STSR cell sites Up to 8 or 16 RF Channels per sector for 60 STSR cell sites 23 077 locates hr locate transceiver 22 464 messages hr Receive 824 to 849 MHz Transmit 869 to 894 MHz 0 25 ppm 30 kHz Continuous 43 5 dBm 22 4 Watts 0 5 dB 23 5 to 43 5 dBm 0 22 to 22 4 Watts Note Adjustment range is the range of requested powers which may be typed into the TRU terminal interface DMS MTX DualMode Metrocell Cell Site Description 7 2 DualMode Metrocell Cell Site Specifications Transmit path insertion loss including ATC duplexer and cable losses 8 channels 4 4 dB maximum 16 channels 4 7 dB maximum 24 channels 5 0 dB maximum Minimum antenna input RF power at the ANT port of the duplexer 8 channels 38 6 dBm 7 33 watts 16 channels 38 3 dBm 6 68 watts 24 channels 38 0 dBm 6 38 watts Intermodulation spurious emissions 60 dBc Receive path insertion gain ANT port of duplexer to TRU input port 3 dB 2 dB Receiver sensitivity for 12 dB SINAD C message weighting Audio I
11. 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 10 1023 1022 1021 1020 1019 1018 1017 1016 1015 1014 1013 1012 1011 1010 1009 1008 1007 1006 1005 1004 003 1002 1001 1000 999 998 997 996 995 994 993 992 991 716 715 714 713 712 711 710 709 708 707 706 705 704 703 702 701 700 699 698 697 696 695 694 693 692 691 690 689 688 687 686 685 684 683 682 681 680 679 678 677 676 675 674 673 672 671 670 669 668 667 Nz4 Frequency plan Band B Group A1 B1 C1 D1 A2 B2 C2 D2 A3 B3 C3 D3 A4 B4 C4 D4 A5 B5 C5 D5 A6 B6 C6 D6 Channe Number 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362
12. left adjacent sector RMC Splitter 6 Main antenna Sector U primary sector RMC 4A A6 Splitter 1 Main antenna Sector V right adjacent sector RMC 5A A4 Splitter 2 Main antenna Sector X rear sector RMC 1A A4 RFFrame3 Splitter Diversity antenna Sector U primary sector RMC 4B B4 TRU shelf 2 Splitter 4 Diversity antenna Sector X rear sector RMC 1B B6 Splitter 5 Diversity antenna Sector Z left adjacent sector RMC 3B B4 Splitter 6 DMS MTX DualMode Metrocell Cell Site Description 3 36 Cell Site Layouts Table 3 15 RMC to splitter connections for a 60 STSR Metrocell with four RF Frames continued From Through To Main antenna Sector V primary sector RMC 5A A5 Splitter 1 Main antenna Sector W right adjacent sector RMC 6A A3 Splitter 2 Main antenna Sector Y rear sector RMC 2A A5 RFFrame4 Splitter 3 Diversity antenna Sector V primary sector RMC 5B B3 shelf 1 Splitter 4 Diversity antenna Sector Y rear sector RMC 2B B5 Splitter 5 Sector Diversity antenna Sector U left adjacent sector RMC 4B B5 Splitter 6 Main antenna Sector V primary sector RMC 5A A6 Splitter 1 Main antenna Sector W right adjacent sector RMC 6A A4 Splitter 2 Main antenna Sector Y rear sector RMC 2A
13. Port 2 DPA 6 Porti ATC2 Port 3 RF Frame 1 DPA 6 Port2 RF Frame 1 ATC2 Port 4 2 DPA 7 Porti ATC Shelf2 2 Port 5 DPA 7 Port 2 ATC2 Port 6 DPA 8 Porti ATC2 Port 7 DPA 8 Port 2 ATC2 Port 8 DPA 1 CCH ATC1 Port 1 DPA 1 Port 2 ATC1 Port 2 DPA 2 Port ATC1 Port 3 RF Frame 2 DPA 2 Port2 LCR RF Frame 2 ATC1 Port 4 TRU DPA DPA3 Porti Shelf 1 ATC1 Port 5 Sne DPA 3 Port 2 ATC1 Port 6 DPA 4 Porti ATC1 Port 7 RF Frame 2 Antenna DPA 4 Port2 ATC1 Portg Duplexer Main receive Position 2 for Sector Y DPA 5 Porti ATC2 Port 1 DPA 5 Port 2 ATC2 Port 2 DPA 6 Porti ATC2 Port 3 RF Frame 2 DPA 6 Port2 RF Frame 2 ATC2 Port 4 nia DPA 7 Porti Shelf2 ATC2 Port 5 DPA 7 Port 2 ATC2 Port 6 DPA 8 Porti ATC2 Port 7 DPA 8 Port2 ATC2 Port 8 411 2021 111 Standard 01 01 June 1996 Cell Site Layouts 3 31 PA S connection for a 60 STSR Metrocell using four RF Frames continued From Through To DPA 9 Port ATC3 Port 1 DPA 9 Port2 ATC3 Port 2 DPA 10 Porti ATC3 Port 3 RF Frame 1 DPA 10 Port2 RF Frame 1 ATC3 Port 4 TRU DPA DPA 11 Porti ATCShelf3 ATC3 Port5 Shef SPA 11 Port Port 6
14. 201 200 199 198 197 196 195 194 193 192 191 190 189 188 187 186 185 184 183 182 181 180 179 178 177 176 175 174 173 172 171 170 169 168 167 166 165 164 163 162 161 160 159 158 157 156 155 154 153 152 151 150 149 148 147 146 145 144 143 142 141 140 139 138 137 136 135 134 133 132 131 130 129 128 127 126 125 124 123 122 121 120 119 118 117 116 115 114 113 112 111 110 109 108 107 106 105 104 103 102 101 100 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81 80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 10 1020 1019 1018 101 1016 1015 1014 101 101 101 101 100 100 10 7 10 6 10 5 10 4 10 1023 3 10 1022 2 10 1021 1 10 999 998 997 996 995 9
15. DPA 12 Port 7 RF Frame 2 Antenna DPA 12 Port2 Port 8 Duplexer MANIERE Position 3 for Sector Z DPA 9 Porti CCH ATC3 Port 1 DPA 9 Port2 ATC3 Port 2 DPA 10 Porti ATC3 Port 3 RF Frame 2 DPA 10 Port2 RF Frame 2 Port 4 Hine in DPA 11 Port Shef3 ATC3 Port 5 DPA 11 Port 2 ATC3 Port 6 DPA 12 Porti ATC3 Port 7 DPA 12 Port 2 ATC3 Port 8 DPA 1 Port1 CCH ATC1 Port 1 DPA 1 Port 2 ATC1 Port 2 DPA 2 Porti ATC1 Port RF Frame 3 DPA 2 Port2 LCR RF Frame 3 ATC1 Port 4 Bre vid DPA 3 Porti Shef1 ATC1T Port5 DPA 3 Port 2 ATC1 Port 6 DPA 4 Porti ATC1 Port 7 RF Frame 3 Antenna DPA 4 Port ATC1 Port 8 Duplexer Main receive Position 2 for Sector U DPA 5 Port ATC2 Port 1 DPA 5 Port 2 ATC2 Port 2 DPA 6 Port ATC2 Port 3 RF Frame 3 DPA 6 Port2 RF Frame 3 ATC2 Port 4 Sur p DPA 7 Porti ATC Shelf2 2 Port 5 DPA 7 Port 2 ATC2 Port 6 DPA 8 Port ATC2 Port 7 DPA 8 Port2 ATC2 Port 8 DMS MTX DualMode Metrocell Cell Site Description 3 32 Cell Site Layouts PA S connection for a 60 STSR Metrocell using four RF Frames continued From Through To DPA 1 Port1 CCH ATC1
16. Example of Metro TRU datafill 6 6 Example of Metro ICRM TRU hardwire configuration 6 7 List of tables Table 1 1 Table 3 1 Table 3 2 Table 3 3 Table 3 4 Table 3 5 Table 3 6 Table 3 7 Table 3 8 Table 3 9 Table 3 10 Table 3 11 Table 3 12 Table 3 13 Table 3 14 Table 3 15 Table 3 16 Table 3 17 Channel designation and frequency assignment 1 5 RF Frame 1 PA to ATC connection for an omni Metrocell with up to 20 channels 3 5 RF Frame 1 PA to ATC connection for an omni Metrocell with 21 channels or more 3 6 RMC to splitter connections for an Omni Metrocell 3 7 Component requirement for an omni Metrocell 3 7 PA to ATC connection for a 120 Metrocell with one RF Frame 3 12 PA to ATC connection for a 120 Metrocell with 20 channels or less per RF frame for one sector 3 13 PA to ATC connection for a 120 Metrocell with 21 channels or more per RF frame for one sector 3 15 RMC to splitter connections for a 120 STSR Metrocell with one RF Frame 3 17 RMC to splitter connections for a 120 STSR Metrocell with three RF Frames 3 18 Component requirement for a 120 STSR Metrocell with one RF Frame 3 20 Component requirement for a 120 STSR Metrocell with three RF Frames 3 20 PA to ATC connection for a 60 STSR Metrocell using two RF Frames 3 28 PA to ATC connection for a 60 STSR Metrocell using four RF Frames 3 30 RMC to splitter connections for a 60 STSR Metrocell with two RF Frames 3 33 RMC to splitter connections for a
17. Port 1 DPA 1 Port 2 ATC1 Port 2 DPA 2 Port ATC1 Port RF Frame 4 DPA 2 Port2 LCR RF Frame4 Port 4 TRU DPA ppA3 Port ATCShelf 5 SRI DPA 3 Port 2 ATC1 Port 6 DPA 4 Porti ATC1 Port7 RF Frame 4 Antenna DPA 4 Port2 ATC1 Portg Duplexer Main receive Position 2 for Sector V DPA 5 Port1 ATC2 Port 1 DPA 5 Port 2 ATC2 Port 2 DPA 6 Port ATC2 Port 3 RF Frame 4 DPA 6 Port2 RF Frame 4 ATC2 Port 4 27 DPA 7 Porti Shelf2 ATC2 Port 5 DPA 7 Port 2 ATC2 Port 6 DPA 8 Porti ATC2 Port 7 DPA 8 Port2 ATC2 Port 8 DPA 9 Port1 CCH ATC3 Port 1 DPA 9 Port2 Port 2 DPA 10 Porti ATC3 Port 3 RF Frame 3 DPA 10 Port2 LCH RF Frame 3 ATC3 Port 4 a rio DPA 11 Porti Shef3 ATC3 Port 5 DPA 11 Port2 ATC3 Port 6 DPA 12 Port1 Port 7 RF Frame 3 Antenna DPA 12 Port2 8 Duplexer Main receive Position 3 for Sector W DPA 9 Port1 Port 1 DPA 9 Port2 Port 2 DPA 10 Porti ATC3 Port 3 RF Frame 4 DPA 10 Port2 RF Frame 4 ATC3 Port 4 DPA 11 Porti Shef3 ATC3 Port 5 DPA 11 Port 2 ATC3 Port 6 DPA 12 Porti Port 7 DPA 12 Port 2 ATC3 Port 8 411 2021 111 Standard 01 01 June 1996 Cell Site Layouts 3 33 Receive cabling In the reverse path the receive signal from the main antenna of each sector is c
18. Presence of the tone mutes normal conversational audio Sectored Transmit Sectored Receive A cell configuration in which a different control and voice frequency assignment is designated for each sector A directional antenna system is required for each sector Time Division Multiple Access A modulation and transmission format that allows a number of digital conversations three in TDMA 3 to occur within the same Radio Frequency RF channel Mobile units take turns transmitting receiving data on specific time slots of a TDMA frame Transmit Receive Unit The TRU is a Digital Signal Processing DSP based transceiver capable of two modes of operation analog AMPS and digital TDMA Voice Channel A Radio Frequency RF channel used to transmit cellular voice conversations The VCH is also an integral part of call setup handoff and disconnect Voltage Standing Wave Ratio A measure of the mismatch between the transmitter source impedance and the load impedance to which it is connected It is defined by the following relationship 1 Reflected Power Forward Power 1 Reflected Power Forward Power VSWR 411 2021 111 Standard 01 01 June 1996 1 1 Introduction Northern Telecom s DualMode Metrocell As cellular systems evolve to the digital format service providers and mobile subscribers are confronted by a mixture of analog and digital technologies Northern Telecom Nortel s dual mode cellular p
19. communication utilities compliance with the Code is mandatory One of the basic safety rules of the national codes CEC and NEC in North America for example requires that there shall be no objectionable current on the Framework Ground conductor grounding conductor In practice this usually means no measurable current In view of the above communication equipment shall use a three wire distribution system as required by the codes system with separated grounding such as Floor Ground and grounded conductor such as Battery Return or the neutral rather than two wire power distribution system system with joined grounding and grounded conductor Note Countries outside North America may have different safety standards codes Follow the safety standards for installation and maintenance of electrical equipment in your country accordingly DMS MTX DualMode Metrocell Cell Site Description 5 2 Power and Grounding Requirements Power and grounding requirements Typical cell site radio equipment is powered by a 24 Vdc power system However the primary power for a DualMode Metrocell is 27 Vdc nominal The reason that 27 Volts is specified as the nominal voltage rather than 24 Volts is to highlight that the system requires the full float voltage level to enable it to deliver its fully rated available transmit RF output power level When AC power is lost and the voltage level to the system is reduced to the nominal battery that is
20. primary sector RMC 1A A2 Splitter 1 Main antenna Sector Y right adjacent sector RMC 2A A2 Splitter 2 Main antenna Sector U rear sector RMC 4A A2 RFFrame 1 Splitter 3 Diversity antenna Sector X primary sector RMC 1B B2 shelf 2 Splitter 4 Diversity antenna Sector U rear sector RMC 4B B2 Splitter 5 Diversity antenna Sector W left adjacent sector RMC 6B B2 Splitter 6 Main antenna Sector Y primary sector RMC 2A A3 Splitter 1 Main antenna Sector Z right adjacent sector RMC 3A A1 Splitter 2 Sector Y Main antenna Sector V rear sector RMC 5A A1 RFFrame2 Splitter 3 Diversity antenna Sector Y primary sector RMC 2B B1 shelf 1 Splitter 4 Diversity antenna Sector V rear sector RMC 5B B1 Splitter 5 Diversity antenna Sector X left adjacent sector RMC 1B B3 Splitter 6 411 2021 111 Standard 01 01 June 1996 Cell Site Layouts 3 35 mco Sod connections for a 60 STSR Metrocell with four RF Frames continued From Through To Main antenna Sector Y primary sector RMC 2A A4 Splitter 1 Main antenna Sector Z right adjacent sector RMC A2 Splitter 2 Sector Main antenna Sector V rear sector RMC 5 2 RFFrame2 Splitter Diversity antenna Sector Y primary sector RMC 2B B2 TRU shelf 2 Spli
21. the output of each Transmit Receive Unit TRU is connected to the input of each corresponding power amplifier PA on the Dual Power Amplifier DPA module For a 60 STSR cell site with two RF Frames each TRU DPA Shelf and its associated ATC and duplexer serve for one of the six sectors as listed below e Sector X RF Frame I TRU DPA Shelf 1 ATC 1 and Duplexer 1 e Sector Y RF Frame I TRU DPA Shelf 2 ATC 2 and Duplexer 2 e SectorZ Frame 1 TRU DPA Shelf 3 ATC 3 and Duplexer 3 e SectorU RF Frame 2 TRU DPA Shelf 1 ATC and Duplexer 1 e Sector V RF Frame 2 TRU DPA Shelf 2 ATC 2 and Duplexer 2 e Sector W Frame 2 TRU DPA Shelf 3 3 and Duplexer 3 The output of each power amplifier PA is input to an 8 channel AutoTune Combiner ATC The output of each 8 channel ATC is connected to the Transmit TX port of each corresponding duplexer Table 3 12 lists the connection between the PAs and the ATC for a 60 STSR cell site using two RF Frame for six sectors For a 60 STSR cell site with four RF Frames the assignment of the equipment for each sector is as listed below e SectorX RF Frame 1 TRU DPA Shelf 1 ATC 1 TRU DPA Shelf 2 ATC 2 and Duplexer 2 Sector Y Frame 2 TRU DPA Shelf 1 ATC 1 TRU DPA Shelf 2 ATC 2 and Duplexer 2 Sector Z RF Frame 1 TRU DPA Shelf 3 ATC 3 RF Frame 2 TRU DPA Shelf 3 ATC 3 and Duplexer 3 SectorU Frame 3 TRU DPA Shelf 1 ATC 1 TRU DPA Shelf 2
22. voltage range 27 60 Vdc 27 25 Vdc 27 00 Vdc Power Plant Equalize voltage one to two days 29 00 Vdc Power Plant voltage drop 0 25 Vdc Maximum power feed length measured from Metro RF Frame RIP to Power Plant breaker 2 0 AWG or Welding Copper Wire 60 feet 18 0 AWG or Welding Copper Wire 47 feet Absolute maximum voltage no damage non operational 30 50 Vdc applied continuously Transient voltage immunity Metro RF Frame modules for 40 Vdc 300 us Noise from battery system and module immunity into 600 Ohms 56 dBmC from 10 kHz to 20 MHz in 3 kHz BW into 50 Ohms 100 mV rms from dc to 100 MHz into Hi Z 250 mV p p Noise to battery system and module emissions from 300 Hz to 10 kHz where Ip is the steady state 9 10loglp dc current draw dBmC from 10 kHz to 1 MHz Ip 0 5mV rms Broadband noise 250 mV p p Battery step system and module immunity within nominal t3 Vdc operating range with 1 V ms maximum rate of change DMS MTX DualMode Metrocell Cell Site Description 5 4 Power and Grounding Requirements The input voltage for other communication equipment is typically 48 Vdc nominal The voltage range at the Power Distribution Centre or other type of a branch panel shall not exceed the range between 43 75 Vdc to 55 80 Vdc The input power is usually obtained from a centralized plant which may be shared with other systems or dedicated to the equipment Power pla
23. 2B B1 TRU shelf 2 Splitter 4 Diversity antenna Sector V rear sector RMC 5B B1 Splitter 5 Diversity antenna Sector X left adjacent sector RMC 1B B2 Splitter 6 Main antenna Sector Z primary sector RMC 3A A2 Splitter 1 Main antenna Sector U right adjacent sector RMC 4A A2 Splitter 2 Sector 2 Main antenna Sector W rear sector 6A A1 RFFrame1 Splitter 3 Diversity antenna Sector Z primary sector B1 shelf Splitter 4 Diversity antenna Sector W rear sector RMC 6B B2 Splitter 5 Diversity antenna Sector Y left adjacent sector RMC 2B B2 Splitter 6 Main antenna Sector U primary sector RMC 4A A3 Splitter 1 Main antenna Sector V right adjacent sector RMC 5A A2 Splitter 2 Sector Main antenna Sector X rear sector 1A 2 RFFrame2 Splitter 3 Diversity antenna Sector U primary sector RMC 4B B2 shelf 1 Splitter 4 Diversity antenna Sector X rear sector RMC 1B B3 Splitter 5 Diversity antenna Sector Z left adjacent sector RMC 3B B2 Splitter 6 DMS MTX DualMode Metrocell Cell Site Description 3 34 Cell Site Layouts BMC te Soins connections for a 60 STSR Metrocell with two RF Frames continued From Through To Main antenna Sector V primary
24. 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573
25. 60 STSR Metrocell with four RF Frames 3 34 Component requirement for a 60 STSR Metrocell with two RF Frames 3 37 Component requirement for a 60 STSR Metrocell with four RF Frames 3 37 DMS MTX DualMode Metrocell Cell Site Description viii Contents Table 4 1 Table 5 1 Table 5 2 Table 6 1 Table 6 2 Table 6 3 Table 6 4 Table 6 5 Table 6 6 Major components of a DualMode Metrocell 4 1 Metrocell DC Power performance requirements 5 3 Cable identification North America 5 9 Datafill differences of the Metrocell from an NT800DR cell 6 1 Trunk requirement for different Metrocell configurations 6 2 MTX Datafill Alarm Points for Metro RF Frame 6 3 MTX Alarm Points Datafill Numbers for Metro RF Frame 6 4 MTX Alarm Points Datafill Numbers for Metro CE Frame components 6 4 NT8X47BA Port Numbers for Metro TRU locations 6 5 411 2021 111 Standard 01 01 June 1996 About this document This publication is one of a set of documents that provide Northern Telecom Nortel customers with information and suggestions on the planning and maintenance of their DualMode Metrocell system This set of documents includes the following manuals e DualMode Metrocell Functional Description Manual DualMode Metrocell Cell Site Description DualMode Metrocell Common Equipment CE Frame Description DualMode Metrocell Radio Frequency RF Frame Description e DualMode Metrocell Planning and Engineering Guidelines e DualM
26. A6 RFFrame4 Splitter 3 Diversity antenna Sector V primary sector RMC 5B B4 TRU shelf 2 Splitter 4 Diversity antenna Sector Y rear sector RMC 2B B6 Splitter 5 Diversity antenna Sector U left adjacent sector RMC 4B Splitter 6 Main antenna Sector W primary sector RMC 6A A5 Splitter 1 Main antenna Sector X right adjacent sector RMC 1A A5 Splitter 2 Main antenna Sector Z rear sector RMC 5 RFFrame3 Splitter Diversity antenna Sector W primary sector RMC 6B B5 shelf 3 Splitter 4 Diversity antenna Sector Z rear sector RMC 3B B5 Splitter 5 Sector W Diversity antenna Sector V left adjacent sector 5B B5 Splitter 6 Main antenna Sector W primary sector RMC 6A A6 Splitter 1 Main antenna Sector X right adjacent sector RMC 1A A6 Splitter 2 Main antenna Sector Z rear sector RMC 3A A6 RFFrame4 Splitter 3 Diversity antenna Sector W primary sector RMC 6B Be shelf 3 Splitter 4 Diversity antenna Sector Z rear sector RMC 3B B6 Splitter 5 Diversity antenna Sector V left adjacent sector RMC 5B B6 Splitter 6 411 2021 111 Standard 01 01 June 1996 Cell Site Layouts 3 37 Component requirement Table 3 16 lists the components required for a 60 STSR Metrocell with two RF Frame and Table 3 17 lists the components required for a 6
27. ATC 2 and Duplexer 2 Sector Frame 4 TRU DPA Shelf 1 ATC 1 TRU DPA Shelf 2 ATC 2 and Duplexer 2 e Sector W RF Frame 3 TRU DPA Shelf 3 ATC 3 and Duplexer 3 RF Frame 4 TRU DPA Shelf 3 ATC 3 By adding one more RF Frame to this configuration three of the six sectors can be expanded to provide up to 24 channels including the CCH and LCR With this additional RF Frame the equipment and cabling may need to be reassigned and rearranged Table 3 12 lists the connection between the PAs and the ATC for a 60 STSR configuration with two RF Frames and Table 3 13 lists the connection between the PAs and the ATC for a 60 STSR configuration with four RF Frames DMS MTX DualMode Metrocell Cell Site Description 3 28 Cell Site Layouts Table 3 12 PA to ATC connection for a 60 STSR Metrocell using two RF Frames From Through To DPA 1 Port1 CCH ATC1 Port 1 DPA 1 Port2 ATC1 Port 2 DPA 2 Porti ATC1 Port RF Frame 1 DPA 2 Port2 LCH RF Frame 1 ATC1 Port4 RF Frame 1 Antenna TRU DPA DPA3 Pori ATC Shelf 1 1 Port5 Duplexer Main receive Shelf 1 Position 1 for Sector X DPA 3 Port2 ATC1 Port 6 DPA 4 Porti ATC1 Port 7 DPA 4 Port2 ATC1 Port 8 DPA 5 Port1 CCH ATC2 Port 1 DPA 5
28. Duplexer ANT receive Position 2 EO RF Frame 3 Antenna TX Sector Z TRU DPA i i 3 RX Duplexer ANT Diversity Shelf 3 Ter receive Position 3 as zu DPA 1 20 DE zc oo 1 y CE Frame ICRM HSMO Notes 1 For diagram clarity only RF Frame 1 is shown RF Frames 2 and 3 are connected and operated identically to that of RF Frame 1 2 For RF Frames with 20 channels or less the Duplexer in position 3 is not required The outputs of the three ATCs are combined together and connected to the Duplexer in position 2 See Table 3 6 DMS MTX DualMode Metrocell Cell Site Description 3 12 Cell Site Layouts Transmit cabling In the transmit path the output of each Transmit Receive Unit TRU is connected to the input of each corresponding power amplifier PA on the Dual Power Amplifier DPA module Table 3 5 For a 120 STSR cell site with one RF Frame each TRU DPA Shelf and its associated ATC and duplexer serve for one of the three sectors TRU DPA Shelf 1 ATC 1 and Duplexer 1 for Sector X TRU DPA Shelf 2 ATC 2 and Duplexer 2 for Sector Y and TRU DPA Shelf 3 ATC 3 and Duplexer 3 for Sector Z The output of each power amplifier PA is input to an 8 channel AutoTune Combiner ATC The output of each 8 channel ATC is connected to the Transmit TX port of each corresponding duplexer Table 3 5 lists the connection between the P
29. M6200 Handset NT3P75AB FRU Handset coil cord NT3P78AB FRU Receive Multicoupler RMC NT3P20HP FRU Integrated Cellular Remote Module ICRM NTAX8607 FRU Port RMDP card NTAX47BA FRU Controller RMCP card NTAX89AA FRU Time Switch RMTS card NTAX88AA FRU RMTC card NTAX88CA FRU DS1 Interface card NT6X50AB FRU E1 Interface card NT6X27BB FRU Power convertor NT2X70CA FRU ICRM FSP Shelf NTAX90AB FRU Alarm RMAC card NTAX92AA FRU TCM RS232 Conversion RMTP card NTAX91AA FRU 411 2021 111 Standard 01 01 June 1996 Cell Site Components 4 3 Customer Service Operations Most of these components can be ordered from Nortel Contact the following Nortel Customer Service Operations CSO when replacement is required For United States customers Northern Telecom Inc Attn Customer Service Operations 400 N Industrial Richardson Texas 75081 For Bell Canada customers Northern Telecom Canada Ltd Customer Service Operations c o Wesbell Transport 1630 Trinity Rd Unit 3 Door 4 Mississauga Ontario L5T 1L6 Attn Replacement and Repair Operations Dept S898 For Mexico customers Northern Telecom de Mexico Toltecas 113 Col San Pedro De Los Pinos Casi Esq Calle 4 Mexico For Asia Pacific customers Northern Telecom Asia Pacific Ltd Attn Technical Assistance Service Warwick House 17 F 28 Tong Chong Street Quarry Bay Hong Kong For Non Bell Canada CALA International customers Northern
30. Port 2 DPA 2 Pori ATC1 Port 3 RF Frame 2 DPA 2 Port2 LCR RF Frame 2 ATC1 Port 4 TRUDFA Poni AISNE 1 5 Shelf 1 DPA 3 Port2 ATC1 Port 6 DPA 4 Porti ATC1 Port7 RFFrame2 DPA 4 Port Pot 8 Duplexer Main receive Position 2 for Sector Y DPA 5 Port1 ATC2 Port 1 DPA 5 Port2 ATC2 Port 2 DPA 6 Port1 ATC2 Port 3 RF Frame 2 DPA 6 Port2 HF Frame 2 ATC2 Port 4 TRU DPA DPA 7 Por ATC Shelf 2 Port 5 Shelf 2 DPA 7 Port 2 ATC2 Port 6 DPA 8 Pori ATC2 Port 7 DPA 8 Port 2 ATC2 Port 8 DPA 9 Port1 ATC3 Port 1 DPA 9 Port 2 ATC3 Port 2 DPA 10 Port1 ATC3 Port 3 RF Frame 2 DPA 10 Port2 HF Frame 2 ATC3 Port 4 RF Frame 2 Antenna TRU DPA DPA 11 Porti Shelf 3 ATC3 Port 5 Duplexer Diversity Shelf 3 Position 3 receive for DPA 11 Port 2 ATC3 Port 6 Sector Y DPA 12 Porti ATC3 Port 7 DPA 12 Port2 ATC3 Port 8 DPA 1 Port1 CCH ATC1 Port 1 DPA 1 Port2 ATC1 Port 2 DPA 2 Pori ATC1 Port 3 RF Frame DPA 2 Port2 LCR RF Frame 3 ATC1 Port 4 TRU DPA DPA3 Port ATC Shelf 1 ATC1 Port5 RFFrame3 Antenna Shelf 1 DPA 3 Port2 ATC1 6 Duplexer Main receive Position 2 for Sector Z DPA 4 Port1 ATC1 Port 7 DPA 4 Port2 ATC1 Port 8 RF Frame DPA 5 Porti HF Frame 3 ATC2 Port 1 TRU DPA DPA 5 Port ATC Shelf 2 Port 2 Shelf 2 DPA 6 Port1 ATC2 Port 3 411 2021 111
31. Port2 ATC1 Port 2 DPA 2 Port1 ATC1 Port 3 RF Frame 1 DPA 2 Port2 LCR RF Frame 1 ATC1 Port 4 TRU DPA 3 Port ATC Shelf 1 ATC1 Port 5 Shelf 1 DPA 3 Port2 ATC1 Port 6 DPA 4 Porti ATC1 Port 7 RF Frame 1 Antenna DPA 4 Port2 ATC1 Pot 8 Duplexer Main receive Position 2 for Sector X DPA 5 Pori ATC2 Port 1 DPA 5 Port2 ATC2 Port 2 DPA 6 Port1 ATC2 Port 3 RF Frame 1 DPA 6 Port2 RF Frame 1 ATC2 Port 4 TRU DPA DPA 7 Porti ATC Shelf 2 2 Port 5 Shelf 2 DPA 7 Port 2 ATC2 Port 6 DPA 8 Port1 ATC2 Port 7 DPA 8 Port 2 ATC2 Port 8 DPA 9 Port1 ATC3 Port 1 DPA 9 Port 2 ATC3 Port 2 DPA 10 Port1 ATC3 Port 3 RF Frame 1 DPA 10 Port2 RF Frame 1 Port 4 RF Frame 1 Antenna TRU DPA DPA 11 Porti ATC Shelf 3 ATC3 Port 5 Duplexer Diversity Shelf 3 Position 3 receive for DPA 11 Port 2 ATC3 Port 6 Sector X DPA 12 Porti ATC3 Port 7 DPA 12 Port2 ATC3 Port 8 DMS MTX DualMode Metrocell Cell Site Description 3 16 Cell Site Layouts Table 3 7 PA to ATC connection for a 120 Metrocell with 21 channels or more per RF frame for one sector continued From Through To DPA 1 Port1 CCH ATC1 Port 1 DPA 1 Port2 ATC1
32. RF Frame Component Dissipation per Maximum Total unit number of units dissipation TRU 2W 24 648W PA 89 W 24 2136W Combiner 4 5 dB 21W 24 504 W Duplexer 0 7 dB 93W 3 28 Total 3 3 KW Regulatory Electromagnetic Emissions Cell site equipment complies with the following Regulatory Specification e FCC part 22 for 800 MHz frequency e FCC part 15 Class B for cell site with Universal CE Frame and Metro RF Frame except for the ICRM CSM HSMO and ACU shelves located on the Universal CE Frame e DOC RSS 128 Issue 1 0 Dual Mode Capability in Canada Radiated Emissions Cell site equipment complies with the following Regulatory Specification e FCC Part 22 for 800 MHz frequency e FCC Part 15 Class for cell site with Universal CE Frame and Metro RF Frame except for the ICRM CSM HSMO and ACU shelves located on the Universal CE Frame e Bell Canada Design Standard TAD 8465 of Bellcore TR NWT 001089 in 10 kHz to 30 MHz and 1 GHz to 10 GHz range for radiated emission Telecom Compliance Cell site equipment complies with the following Regulatory Specification e CS03 Issue 7 Part 2 Table 1 Digital Interface Requirement Type IV e FCC Part 68 TSB31 Table 4 5 2 Test Requirement Matrix DMS MTX DualMode Metrocell Cell Site Description 7 6 DualMode Metrocell Cell Site Specifications Product Safety Cell site equipment complies with the following Safety
33. RMC to splitter connections for a 120 STSR Metrocell with three RF Frames From Through To Main antenna Sector X RMC 1A A1 Splitter 1 Main antenna Sector Y RMC 2A A1 Splitter 2 Main antenna Sector Z RMC 3A A1 RF Frame 1 Splitter Diversity antenna Sector X RMC 1B B1 shelf 1 Splitter 4 Diversity antenna Sector Y RMC 2B B1 Splitter 5 Diversity antenna Sector Z RMC 3B B1 Splitter 6 Main antenna Sector X RMC 1A A2 Splitter 1 Main antenna Sector Y RMC 2A A2 Splitter 2 Sector X Main antenna Sector Z 2 RF Frame 1 Splitter Diversity antenna Sector X RMC 1 2 shelf 2 Splitter 4 Diversity antenna Sector Y RMC 2B B2 Splitter 5 Diversity antenna Sector Z RMC 3B B2 Splitter 6 Main antenna Sector X RMC 1A A3 Splitter 1 Main antenna Sector Y 2 RF Frame 1 Splitter 2 Main antenna Sector Z shelf 3 Splitter 3 Diversity antenna Sector X RMC 1B B3 Splitter 4 Diversity antenna Sector Y RMC 2B B3 Splitter 5 411 2021 111 Standard 01 01 June 1996 Cell Site Layouts 3 19 connections for 120 STSR Metrocell with three RF Frames continued From Through To Sector X Diversity antenna Sector Z RF Frame 1 Spl
34. RS 232 data only This potentially creates a connection between the system ground and the AC ground in which the connected terminal can affect system performance and damage equipment A RS 232 opto for example Telebyte model 268 is recommended for this connection and this link should only be used in commissioning or doing maintenance and not be connected in normal operations Control signals between the TRU and DPA TTL COMS logic levels These signals are restricted to the shelf backplane only Alarm signals between the ATC shelf and the TRU DPA shelf 4 27 V These signals are restricted between the two shelves on the Metro RF Frame which provides a good low resistance ground to frame Interframe alarm signals 27V These signals are actually opto isolated at the receive end that is at the ACU The return path is through the system framework ground ATC remote interface RS 232 or RS 485 Future Development 411 2021 111 Standard 01 01 June 1996 Power and Grounding Requirements 5 9 Cable Identification It is a current practice to label or color code insulated conductors The following table shows the labeling and colors of insulated wires used in North America Table 5 2 Cable identification North America Conductor Potential Function Label Color Code if used 24 Vdc dc power L typically black with a tag 0 V grounded side of dc power return L typically bla
35. a maximum of 120 channels including the CCH and the LCR An RF Frame with up to 20 channels requires only one duplexer in the RF Frame and one TX RX antenna The outputs of the three AutoTune Combiners ATC are combined through one phasing transformer located at ATC 2 and then connected to Duplexer position 2 This configuration requires a RX only antenna for the diversity receive function of the cell See Figure 3 2 An RF Frame with 21 channels or more requires two duplexers in the RF Frame and two TX RX antennas The outputs of the lower and middle ATCs DMS MTX DualMode Metrocell Cell Site Description 3 2 Cell Site Layouts ATC 1 and ATC 2 are combined through one phasing transformer located at ATC 2 and then connected to Duplexer position 2 and the main TX RX Antenna The output of the upper ATC ATC 3 is connected to Duplexer position 3 and the diversity TX RX Antenna This arrangement is used to meet the requirement of a minimum of 21 channel spacing 630 kHz between the channels in one RF Frame This configuration requires a TX RX antenna to perform the diversity receive function of the cell See Figure 3 3 Control Channel redundancy Control Channel CCH redundancy is commonly provided with a Locate Channel Receiver LCR backup The CCH is assigned to position 1 on the TRU DPA Shelf 1 and the LCR is assigned to position 4 on the same shelf This arrangement will have the CCH and the LCR supplied on a different DC p
36. cell site served by a specific group of directional antennas on specific channels Sectorization A cell site configuration that consists of two or more sectors in which a different control and voice channel assignment is given for each sector In this arrangement the datafill and channel assignments for each sector are tailored to meet the system operational requirements providing more flexibility in the cell site configuration compared to an omni configuration but with a decrease in trunking efficiency Signal RF Radio frequency energy associated with a particular or desired frequency SINAD A standard measurement of detected audio quality that is related to signal to noise plus distortion of the RF signal strength at the receiver input terminal 12 dB SINAD is the commonly used threshold for receiver sensitivity measurements to determine the weakest practical analog RF input in dBm required by the receiver A SINAD of 20 dB is considered good quality and defines the RF input level needed to fully quiet the receiver S N Signal to Noise ratio The ratio of signal power to noise power on a radio channel DMS MTX DualMode Metrocell Cell Site Description Xvi List of terms ST STSR TDMA TRU VCH VSWR Signaling Tone In AMPS cellular a 10 KHz tone transmitted on the Reverse Voice Channel RVC as a precursor to messaging activity and for certain call processing functions acknowledgments call termination
37. sector RMC 5A Splitter 1 Main antenna Sector W right adjacent sector RMC 6A A2 Splitter 2 Sector V Main antenna Sector Y rear sector 2A RFFrame2 Splitter 3 Diversity antenna Sector V primary sector RMC 5B 2 shelf 2 Splitter 4 Diversity antenna Sector Y rear sector RMC 2B B3 Splitter 5 Diversity antenna Sector U left adjacent sector RMC 4B B3 Splitter 6 Main antenna Sector W primary sector RMC 64A A3 Splitter 1 Main antenna Sector X right adjacent sector RMC 1 Splitter 2 Sector W Main antenna Sector Z rear sector RMC 3A RFFrame2 Splitter 3 Diversity antenna Sector W primary sector RMC 6B B3 TRU shelf 3 Splitter 4 Diversity antenna Sector Z rear sector RMC 3B B3 Splitter 5 Diversity antenna Sector V left adjacent sector RMC 5B B3 Splitter 6 Table 3 15 RMC to splitter connections for a 60 STSR Metrocell with four RF Frames From Through To Main antenna Sector X primary sector 1A A1 Splitter 1 Main antenna Sector Y right adjacent sector RMC 2A A1 Splitter 2 Main antenna Sector U rear sector A1 RFFrame 1 Splitter Diversity antenna Sector X primary sector RMC 1B B1 shelf 1 Splitter 4 Diversity antenna Sector U rear sector RMC 4B B1 Splitter 5 Sector X Diversity antenna Sector W left adjacent sector RMC 6B B1 Splitter 6 Main antenna Sector X
38. the LCR is assigned to position 4 on the same shelf This arrangement will have the CCH and the LCR supplied on a different DC power feed and a TCM card No RF coaxial switch is required since the cavity of the LCR position on the ATC will tune to the CCH frequency when backup is required 411 2021 111 Standard 01 01 June 1996 Cell Site Layouts 3 9 Figure 3 4 Frame layout of a 120 STSR Metrocell site with one RF frame front view RF Frame 1 RF RIP CE RIP DRUM RMC 2 pes Duplexer Duplexer Duplexer Position 3 Position 2 Position 1 Sector Z Sector Y Sector X ATC 3 Sector Z DPA DPA 11 12 DPA DPA 9 10 RU 17 TRU 21 TRU 18 22 TRU 19 TRU 23 RMC 3 Sector Z Blank Panel Blank Panel Base Figure 3 5 ATC 2 Sector ATC 1 Sector X TRU 1 TRU5 TRU 3 TRU 7 TRU DPA Shelf 3 Sector Z TRU DPA Shelf 2 Sector Y TRU DPA Shelf 1 Sector X Frame layout of a 120 STSR Metrocell site with three RF frames front view RF Frame 1 Sector X CE RIP RF RIP RF Frame 2 Sector Y RF RIP RF Frame 3 Sector Z RF RIP Duplexer Duplexer DRUM Position 3 Position 2 Duplexer Position 1 Duplexer Duplexer Duplexer Pos sition 3 Position 2 Position 1 Duplexer Duplexer Duplexe Position 3 Position 2 Position 1 ATC 3 AT
39. the theory of switching and radio propagation How this publication is organized This publication is organized to present the following information an introduction to the DualMode Metrocell Cell Site the Metrocell cell site configurations omni 120 STSR and 60 STSR the equipment layouts block diagrams and transmit and receive cabling for each configuration the cell site components required for each configuration the power and grounding requirements for a Metrocell cell site information on datafilling a Metrocell Applicability of this publication This publication is generically applicable to feature functionality yet captures some BCS independent environment and implementation issues 411 2021 111 Standard 01 01 June 1996 xi List of terms A Band ACU AMPS ATC B Band BER The lower 333 channels Channel 1 333 of the cellular band normally assigned to a non wireline operator in the US and Canada The Expanded Spectrum provides 83 more channels 50 Channel 667 716 in the A Band and 33 channel 991 1023 in the A Band Alarm Control Unit A unit that provides discrete alarm monitoring reporting and control functions at the cell site It concentrates all alarm input points at the cell site and updates the MTX of any status change over redundant data links Advanced Mobile Phone Service Analog cellular phone service AutoTune Combiner A cavity isolator combiner featuring a
40. 0 STSR Metrocell with four RF Frames Both configurations require six Receive Multicouplers RMC Table 3 16 Component requirement for a 60 STSR Metrocell with two RF Frames No of TRUs No of TRUs No of ATCs No of No of ICRM No of antennas per Sector Duplexers TCM Port cards 3108 18 to 48 6 6 4 6 TX RX 6 RX Note n additional TCM port card is required for the DRUM the ACU and the CSM2 Table 3 17 Component requirement for a 60 STSR Metrocell with four RF Frames No of TRUs No of TRUs No of ATCs No of No of ICRM No of antennas per Sector Duplexers TCM Port cards 3 to 16 18 to 96 12 6 6 6 TX RX 6 RX Note n additional TCM port card is required for the DRUM the ACU and the CSM2 DMS MTX DualMode Metrocell Cell Site Description 3 38 Cell Site Layouts 411 2021 111 Standard 01 01 June 1996 Cell Site Components This chapter provides information on the description and Product Engineering Codes PEC of the major components used in a DualMode Metrocell Table 4 1 Major components of a DualMode Metrocell Note FRU Field Replaceable Unit Description PEC Metro RF Frame NTFB10AA A DC Power Cable Harness NTFB0901 B DC Power Cable Harness NTFB0902 Metro RF Rack Interface Panel RIP Shelf NTFB11AA FRU Duplexer NTFB16AA FRU AutoTune C
41. 0 and ANSI NFPA No 70 article 250 21 and the safety standards specify that the electrical codes be adhered to The Metrocell uses a two wire DC power distribution scheme In a grounded two wire system the return and ground are multiply connected and an unspecified amount of the return current can flow over the grounding conductors in violation of the electrical code rules Therefore each cell site has to be inspected by a safety authority UL CSA in North America such that the codes requirements refer to UL 1459 par 14 2 and 34 6 and CSA C22 2 No 225 par 4 5 3 1a are met in order to obtain an approval from that authority UL 1459 par 14 2 A product intended for permanent connection to the branch circuit supply shall have provision for the connection of one of the wiring methods in accordance with the National Electrical Code ANSI NFPA No 70 UL 1459 par 34 6 A field wiring terminal intended solely for connection of an equipment grounding conductor shall be capable of securing a conductor of the size rated for the application in accordance with the National Electrical Code ANSI NFPA No 70 CSA C22 2 NO 225 par 3 5 3 1a Permanently connected equipment shall be provided with wiring terminals or leads for the connection of conductors not less than 14 AWG and having an ampacity not less than 125 of the rated input current UL would not accept the grounding of the battery return when the battery cell site configuration is not in t
42. 0 channels or less in one sector requires one duplexer in the RF Frame and one TX RX antennas for that sector The outputs of the three combiners are combined through one phasing transformer located at ATC 2 and connected to Duplexer position 2 in that RF Frame The output of the duplexer is then connected to the main TX RX Antenna of that sector An RF Frame with 21 channels or more in one sector requires two duplexers in the RF Frame and two TX RX antennas for that sector The outputs of A C 1 and ATC 2 are combined through one phasing transformer located at ATC 2 and connected to Duplexer position 2 in that RF Frame The output of the duplexer is then connected to main TX RX Antenna of that sector The output of ATC 3 is connected to Duplexer position 3 and then to the diversity TX RX Antenna of that sector This arrangement is used to meet the requirement of a minimum of 21 channel spacing 630 kHz between the channels in one RF Frame Figure 3 5 shows the frame layout and Figure 3 7 shows the block diagram of a 120 STSR Metrocell with three RF Frames Control Channel redundancy Control Channel CCH redundancy is commonly provided with a Locate Channel Receiver LCR backup With one RF Frame the CCH of each sector is assigned to position 1 on the TRU DPA Shelf of that sector and the LCR is assigned to position 4 on the same shelf With three RF Frames the CCH of each sector is assigned to position 1 on TRU DPA Shelf 1 of that sector and
43. 1 120 sectorized configuration 2 2 60 sectorized configuration 2 4 Cell Site Layouts 3 1 Omni cell site configuration 3 1 Control Channel redundancy 3 2 Transmit cabling 3 5 Receive cabling 3 7 Component requirement 3 7 120 STSR cell site configuration 3 8 Control Channel redundancy 3 8 Transmit cabling 3 12 Receive cabling 3 17 Component requirement 3 20 60 STSR cell site connection 3 21 Control Channel redundancy 3 21 Transmit cabling 3 27 Receive cabling 3 33 Component requirement 3 37 DMS MTX DualMode Metrocell Cell Site Description vi Contents Cell Site Components 4 1 Customer Service Operations 4 3 Power and Grounding Requirements 5 1 Safety requirements 5 1 Power and grounding requirements 5 2 Frame power distribution 5 5 System power protection 5 6 Grounding 5 6 Cable Identification 5 9 Datafilling a Metro Cell Site 6 1 Datafill Overview 6 1 Table CLLI 6 2 Table ACUALM 6 2 Table VCHINV CCHINV LCRINV 6 5 Appendices Appendix A DualMode Metrocell Cell Site Specifications 7 1 System Configuration 7 1 Radio Frequency 7 1 Audio Interface 7 2 Alarms 7 2 DC Power Requirements 7 3 Power Distribution Requirements 7 3 Mechanical 7 3 Packaging 7 4 Environmental 7 4 Regulatory 7 5 Appendix B Frequency plans 7 7 N 7 Frequency plan Band A 7 7 N 7 Frequency plan Band B 7 8 N24 Frequency plan Band A 7 9 N24 Frequency plan Band B 7 9 List of figures Figure 1 1 System arch
44. 11 Standard 01 01 June 1996 Cell Site Layouts 3 13 Table 3 5 PA to ATC connection for a 120 Metrocell with one RF Frame continued From Through To DPA 9 Port1 CCH Port 1 DPA 9 Port 2 Port 2 DPA 10 Port 3 TRU DPA DPA 10 Port2 LCR ATC Shelf 3 ATC3 Port 4 Duplexer Antenna Shelf 3 DPA 11 Porti ATC3 Port 5 Position 3 Main receive for Sector Z DPA 11 Port2 Port 6 DPA 12 Porti Port 7 DPA 12 Port2 Port 8 Table 3 6 PA to ATC connection for a 120 Metrocell with 20 channels or less per RF frame for one sector From Through To DPA 1 Porti CCH ATC1 Port 1 DPA 1 Port2 ATC1 2 RF Frame 1 DPA 2 Porti ATC1 Port 3 40 DPA2 Port2 LCR Frame1 4 DPA 3 Porti Shef1 Port 5 DPA 3 Port2 6 DPA 4 Port1 ATC1 Port 7 DPA 4 Port2 ATC1 Port 8 DPA 5 Porti ATC2 Port 1 RF Frame 1 Antenna DPA 5 Port2 ATC2 Port 2 Duplexer Main receive Position 2 for Sector X RF Frame 1 DPA 6 Porti ATC2 Port 3 TRU DPA DPA 6 Port2 Frame 1 ATC2 Port 4 Shef2 ATC Shelf2 2 Port 5 DPA 7 Port 2 ATC2 Port 6 DPA 8 Port1 ATC2 Port 7 DPA 8 Port 2 ATC2 Po
45. 24 Vdc the power amplifiers will automatically step down their transmit RF output power See the Dual Power Amplifier DPA section in NTP 411 2021 113Metrocell Radio Frequency RF Frame Description for details The power plant normally consists of a negative grounded 12 cell Valve Regulated Lead Acid VRLA battery plant andAC powered battery charging units commonly referred to as the rectifiers Under normal operating conditions that is when AC power is available the batteries are maintained within their specified float voltage range via the rectifiers which must supply current to power the system and keep the batteries charged When an AC outage occurs the battery plant provides back up power to the system However at this time the system will experience a step drop in voltage due to a battery plant transition from the float state to the fully charged state During the battery discharge period the voltage supplied to the system will gradually drop from its fully charged voltage Under normal operating conditions an equalizing charge is not required An equalizing charge is a special charge given to a battery when non uniformity in voltage has developed between cells It is given to restore all units to a fully charged condition by using a charging voltage higher than the normal float voltage and for a specified number of hours as determined by the specific voltage used An equalize charge is also often applied when a recharge of the batte
46. 5 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 63
47. 5 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 411 2021 111 Standard 01 01 June 1996 Frequency Plans 7 9 Nz4 Frequency plan Band A Group A1 B1 C1 D1 A2 B2 C2 D2 A3 B3 C3 D3 A4 B4 C4 D4 A5 B5 C5 D5 A6 B6 C6 D6 Channel Number 333 332 331 330 329 328 327 326 325 324 323 322 321 320 219 318 317 316 315 314 313 312 311 310 309 308 307 306 305 304 303 302 301 300 299 298 297 296 295 294 293 292 291 290 289 288 2
48. 87 286 285 285 283 282 281 280 279 278 277 276 275 274 273 272 271 270 269 268 267 266 265 264 263 262 261 260 259 258 257 256 255 254 253 252 251 250 249 248 247 246 245 244 243 242 241 240 239 238 237 236 235 234 233 232 231 230 229 228 227 226 225 224 223 222 221 220 219 218 217 216 215 214 213 212 211 210 209 208 207 206 205 204 203 202 201 200 199 198 197 196 195 194 193 192 191 190 189 188 187 186 185 184 183 182 181 180 179 178 177 176 175 174 173 172 171 170 169 168 167 166 165 164 163 162 161 160 159 158 157 156 155 154 153 152 151 150 149 148 147 146 145 144 143 142 141 140 139 138 137 136 135 134 133 132 131 130 129 128 127 126 125 124 123 122 121 120 119 118 117 116 115 114 113 112 111 110 109 108 107 106 105 104 103 102 101 100 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81 80 79 78 77 76 75 74 73
49. 94 993 992 991 716 715 714 713 712 711 710 709 708 707 706 705 704 703 702 701 700 699 698 697 696 695 694 693 692 691 690 689 688 687 686 685 684 683 682 681 680 670 678 677 676 675 674 673 672 671 670 669 668 667 Note The control channels are indicated in bold in these frequency plans they may be re assigned as required DMS MTX DualMode Metrocell Cell Site Description 7 8 Frequency Plans N 7 Frequency plan Band B Group A1 B1 C1 D1 E1 F1 G1 A2 B2 C2 D2 E2 F2 G2 A3 B3 C3 D3 E3 F3 G3 Channel Number 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 42
50. A 18 ATC5 Port 3 RF Frame 2 DPA 18 Port2 LCH RF Frame2 5 Port 4 Frame2 Antenna TRU DPA DPA 19 Port ATCShelf2 5 Ports Duplexer Main receive Shelf 2 Position 2 for Sector V DPA 19 Port 2 ATC5 Port 6 DPA 20 ATC5 Port 7 DPA 20 Port2 ATC5 Port 8 DPA 21 Port1 CCH ATC6 Port 1 DPA 21 Port2 ATC6 Port 2 DPA 22 ATC6 Port 3 RF Frame 2 DPA 22 Port2 RF Frame 2 ATC6 Port 4 RF Frame 2 Antenna TRU DPA 23 Port ATCShelf3 Arce Ports Duplexer Main receive Shelf 3 Position 3 for Sector W DPA 23 Port2 ATC6 Port 6 DPA 24 ATC6 Port 7 DPA 24 Port2 ATC6 Port 8 DMS MTX DualMode Metrocell Cell Site Description 3 30 Cell Site Layouts Table 3 13 PA to ATC connection for a 60 STSR Metrocell using four RF Frames From Through To DPA 1 Port1 CCH ATC1 Port 1 DPA 1 Port2 ATC1 Port 2 DPA 2 Port ATC1 Port RF Frame 1 DPA 2 Port2 LCH RF Frame 1 ATC1 Port 4 m pm DPA 3 Porti Shef1 ATC1T Port5 DPA 3 Port2 ATC1 Port 6 DPA 4 Porti ATC1 Port 7 RF Frame 1 Antenna DPA 4 Port2 Port 8 Duplexer Main receive Position 2 for Sector X DPA 5 Porti ATC2 Port 1 DPA 5 Port2 ATC2
51. As and the ATC for a 120 STSR cell site using one RF Frame for three sectors For a 120 STSR cell site with three RF Frames each frame serves for one of the three sectors RF Frame 1 for Sector X RF Frame 2 for Sector Y and RF Frame 3 for Sector Z With an RF Frame holding up to 20 channels only one duplexer is required With 21 or more channels in one RF Frame two duplexers are required Table 3 6 lists the connection between the PAs and the ATC for an RF Frame with up to 20 channels Table 3 7 lists the connection between the PAs and the ATC for an RF Frame with 21 channels or more PA to ATC connection for a 120 Metrocell with one RF Frame From Through To DPA 1 Port1 CCH ATC1 Port 1 DPA 1 Port2 ATC1 Port 2 DPA 2 Porti ATC1 Port 3 TRU DPA DPA 2 Port2 LCR ATC Shelf 1 ATC1 Port 4 Duplexer Antenna Shelf 1 DPA 3 Porti ATC1 5 Position 1 Main receive for Sector X DPA 3 Port2 ATC1 Port 6 DPA 4 Porti ATC1 Port 7 DPA 4 Port2 ATC1 Port 8 DPA 5 Port1 CCH ATC2 Port 1 DPA 5 Port2 ATC2 Port 2 DPA 6 Porti ATC2 Port 3 TRU DPA DPA 6 Port2 LCR ATC Shelf 2 ATC2 Port 4 Duplexer Antenna Shelf 2 DPA 7 Porti 5 Position 2 Main receive for Sector Y DPA 7 Port 2 ATC2 Port 6 DPA 8 Porti ATC2 Port 7 DPA 8 Port 2 ATC2 Port 8 411 2021 1
52. C 3 ATC 3 Eu CSM2 RMC 1 Sector X RMC 2 Sector Y RMC 3 Sector Z DPA DPA U 17 TRU 21 ITRU 18 TRU 22 R ov gt 33 gt gt RU 20 TRU 24 TRU 18 TRU 22 U 19 TRU 23 2 ATC2 DPA DPA 11 12 Blank Panel DPA DPA 7 8 TRU 9 TRU 13 TRU 10 TRU 14 TRU 11 TRU 15 12 TRU 16 TRU 9 TRU 13 TRU 10 TRU 14 DPA DPA 5 6 TRU 11 15 TRU 12 TRU 16 TRU 9 TRU 13 10 TRU 14 11 TRU 15 TRU 12 TRU 16 ATC 1 3 4 DPA DPA DPA Blank Panel TRU 1 TRU5 TRU 2 TRU 6 1 2 DPA DPA TRU 3 TRU 7 TRU 4 TRU 8 TRU 1 5 TRU 2 TRU 6 TRU 3 TRU 7 TRU 1 TRU 5 TRU 2 TRU 6 TRU TRU 7 Base Note Base TRU DPA Shelf 3 TRU DPA Shelf 2 TRU DPA Shelf 1 For a frame with up to 20 channels only one duplexer located in position DMS MTX DualMode Metrocell Cell Site Description 3 10 Cell Site Layouts 2 is required For a frame with 21 channels or more two duplexers located in positions 2 and 3 are required Figure 3 6 Block diagram of a 120 STSR Metrocell using one RF Frame
53. Frame 3 i m e J Antenna Sector X Main receive Antenna Sector X Diversity receive Antenna Sector Y Main receive Antenna Sector Y Diversity receive Antenna Sector V Main receive Antenna Sector V Diversity receive Antenna Sector W Main receive Antenna Sector W Diversity receive DMS MTX DualMode Metrocell Cell Site Description 3 26 Cell Site Layouts Figure 3 11 Block diagram of a 60 STSR Metrocell with four RF Frames continued See Tables 3 13 f RF Frame 2 See Table 3 15 for Lapis TOT RMC TRU Shelf connection PA ATC connection eg LS Antenna E Sector X Ai TX Main A5 Of Te Duplexer receive LA SE Position 2 e 1 ae 1 RF Frame 1 Antenna S M B J B Sector X Ho B3 Diversity TRU DPA EE receive ArC1 Shelf1 i Antenna Ai Sector Y i me a lt TX Main uic o 1 Rx Dupl
54. Port 1 DPA 1 Port2 ATC1 Port 2 DPA 2 Port1 ATC1 Port 3 RF Frame DPA 2 Port2 LCR RF Frame 3 ATC1 Port 4 TRU DPA DPA 3 Porti ATC Shelf 1 ATC1 Port 5 Shelf 1 DPA 3 Port2 ATC1 Port 6 DPA 4 Porti ATC1 Port 7 RF Frame Antenna DPA 4 Port Pot 8 Duplexer Main receive Position 2 for Sector Z DPA 5 Pori ATC2 Port 1 DPA 5 Port2 ATC2 Port 2 RF Frame DPA 6 Porti HF Frame 3 ATC2 Port 3 TRU DPA DPA 6 Port ATC Shelf 2 Port 4 Shelf 2 DPA 7 Port1 ATC2 Port 5 DPA 7 Port 2 ATC2 Port 6 411 2021 111 Standard 01 01 June 1996 Cell Site Layouts 3 15 Table 3 6 PA to ATC connection for a 120 Metrocell with 20 channels or less per RF frame for one sector continued From Through To RF Frame DPA 8 Frame 3 ATC2 Port 7 TRU DPA 8 Port 2 ATC 2 ATC2 Port 8 Shelf 2 DPA 9 Porti ATC3 Port1 RF Frame 3 Antenna RF Frame 3 DPA 9 Port 2 RF Frame 3 ATC3 Port2 ipod ha osition or Sector Bin do DPA 10 Porti Shef3 ATC3 Port 3 e DPA 10 Port2 ATC3 Port 4 Table 3 7 PA to ATC connection for a 120 Metrocell with 21 channels or more per RF frame for one sector From Through To DPA 1 Port1 CCH ATC1 Port 1 DPA 1
55. Port2 ATC2 Port 2 DPA 6 Porti ATC2 Port 3 RF Frame 1 DPA 6 Port2 LCH RF Frame 1 2 Port 4 RF Frame 1 Antenna TRU DPA DPA 7 Porti Shelf2 ATC2 Port5 Duplexer Main receive Shelf 2 Position 2 for Sector Y DPA 7 Port 2 ATC2 Port 6 DPA 8 Porti ATC2 Port 7 DPA 8 Port 2 ATC2 Port 8 DPA 9 Port1 CCH Port 1 DPA 9 Port 2 ATC3 Port 2 DPA 10 Porti ATC3 Port 3 RF Frame 1 DPA 10 Port2 RF Frame 1 Port 4 RF Frame 1 Antenna TRU DPA DPA 11 Porti Shelf3 Ports Duplexer Main receive Shelf 3 Position 3 for Sector Z DPA 11 Port2 ATC3 Port 6 DPA 12 Porti ATC3 Port 7 DPA 12 Port2 ATC3 Port 8 DPA 13 Port1 CCH ATCA Port 1 DPA 13 Port2 ATCA Port 2 DPA 14 Porti ATCA Port 3 RF Frame 2 DPA 14 Port2 LCH RF Frame2 4 Port 4 RF Frame 2 Antenna TRU DPA BPA 45 Port ATC Shelf 1 ATCA Por 5 Duplexer Main receive Shelf 1 Position 1 for Sector U DPA 15 Port2 ATCA Port 6 DPA 16 ATC4 Port 7 DPA 16 Port2 ATCA Port 8 411 2021 111 Standard 01 01 June 1996 Cell Site Layouts 3 29 Table 3 12 PA to ATC connection for a 60 STSR Metrocell using two RF Frames continued From Through To DPA 17 Port1 CCH ATC5 Port 1 DPA 17 Port2 ATC5 Port 2 DP
56. RF Frame 1 RF Frame 2 CE Frame Sectors X amp 2 Sectors amp 2 U F CE RIP Duplexer Duplexer Duplexer Duplexer Duplexer Duplexer DRUM Position 3 Position 1 Position 2 Position 1 ATC 3 ATC 3 HSMO CSM 2 o loci ETR 1 Sector X RMC 1 Sector X 9 10 RMC 2 Sector Y ATC 2 RMC 3 Sector Z Sector U RMC 4 Sector U DPA 5 Sector V pis DEA ui RMC 6 Sector W Sector U Sector X Sector Y DPA DPA DPA DPA DPA DPA 5 6 5 6 5 6 ATC 1 ICRM ATC 1 ATC 1 Sector V Sector U Sector X Sector Y DPA DPA DPA DPA DPA DPA co DPA 3 4 3 3 4 Sector W DPA DPA 11 12 Sector Z Sector Z DPA DPA DPA DPA 11 12 11 12 Sector Z Sector Z DPA DPA DPA DPA 9 10 9 10 ATC2 ATC2 Sector X Sector TRU 17 TRU 21 TRU 20 TRU 24 17 TRU 21 18 TRU 22 ITRU 19 TRU 23 TRU 20 TRU 24 TRU 17 TRU 21 TRU 18 TRU 22 19 TRU 23 ITRU 17 TRU 21 TRU 18 TRU 22 TRU 19 TRU 23 TRU 9 TRU 13 10 TRU 14 TRU 9 TRU 13 10 TRU 14 11 TRU 15 TRU 9 TRU 13 TRU 10 TRU 14 11 TRU 15 TRU 12 TRU 16 TRU 9 TRU 13 TRU 10 TRU 14 11 TRU 15 RU 12 TRU 16 4 4 Sector V Sector X DPA DPA DPA DPA Sector U DPA DPA 1 Sector Y DPA DPA Blank Panel TRU2 TRU6
57. Specification CSA C22 2 No 225 M90 Telecommunication Equipment CSA C22 2 No 1 Radio Television and Electronic Apparatus UL 1459 Issue 2 0 Telephone Standard UL 1419 Proposed Video and Audio Equipment Nortel Standard 9001 00 Product Safety 411 2021 111 Standard 01 01 June 1996 Frequency Plans 7 7 Appendix B Frequency Plans N 7 Frequency plan Band A Group A1 B1 C1 D1 E1 F1 G1 A2 B2 C2 D2 E2 F2 G2 A3 B3 C3 D3 E3 F3 G3 Channel Number 333 332 331 330 329 328 327 326 325 324 323 322 321 320 219 318 317 316 315 314 313 312 311 310 309 308 307 306 305 304 303 302 301 300 299 298 297 296 295 294 293 292 291 290 289 288 287 286 285 284 283 282 281 280 279 278 277 276 275 274 273 272 271 270 269 268 267 266 265 264 263 262 261 260 259 258 257 256 255 254 253 252 251 250 249 248 247 246 245 244 243 242 241 240 239 238 237 236 235 234 233 232 231 230 229 228 227 226 225 224 223 222 221 220 219 218 217 216 215 214 213 212 211 210 209 208 207 206 205 204 203 202
58. Standard 01 01 June 1996 Cell Site Layouts 3 17 Table 3 7 PA to ATC connection for a 120 Metrocell with 21 channels or more per RF frame for one sector continued From Through To RF Frame 3 DPA 6 Port2 RF Frame 3 Port 4 RF Frame Antenna TRU DPA ppa7 port Shelf 2 atco 5 Duplexer Main receive Shelf 2 Position 2 for Sector Z DPA 7 Port 2 ATC2 Port 6 DPA 8 Port1 ATC2 Port 7 DPA 8 Port 2 ATC2 Port 8 DPA 9 Port1 ATC3 Port 1 DPA 9 Port 2 ATC3 Port 2 DPA 10 Port1 ATC3 Port 3 RF Frame 3 DPA 10 Port2 RF Frame 3 Port 4 RF Frame Antenna TRU DPA DPA 11 Porti ATC Shelf 3 ATC3 Port 5 Duplexer Diversity Shelf 3 Position 3 receive for DPA 11 Port 2 ATC3 Port 6 Sector Z DPA 12 Port1 ATC3 Port 7 DPA 12 Port2 ATC3 Port 8 Receive cabling Table 3 8 In the reverse path the receive signal from the main antenna of each sector is connected to the A input of the Receive Multicoupler RMC through the receive port of the duplexer of that sector The diversity antenna connects directly to the B input of the RMC Distribution of the reverse path frequencies is accomplished by RF splitters within each RF frame Table 3 8 lists the connection between the RMCs and the RF splitters in a 120 STSR Metrocell with one RF Frame Table 3 9 lists the connec
59. Telecom Canada Ltd Customer Service Operations c o Wesbell Transport 1630 Trinity Rd Unit 3 Door 4 Mississauga Ontario L5T 1L6 Attn Replacement and Repair Operations Dept S898 DMS MTX DualMode Metrocell Cell Site Description 4 4 Cell Site Components 411 2021 111 Standard 01 01 June 1996 Power and Grounding Requirements Cell sites are built to house communication equipment of the cellular telephone network Cellular equipment can be located in stand alone sites or in larger buildings in urban areas Cellular equipment is traditionally powered from a 24 Vdc power plant Some switching equipment can also be located in a cell site It is connected with other equipment through CO cables RF signals are transmitted using coaxial cables through areal antennas Since cell sites are susceptible to lightning strikes extra precautions have to take place to ensure the operation Safety requirements Safety standards for installation and maintenance of electrical equipment are the object of the national codes Canadian Electrical Code CEC in Canada and the National Electrical Code NEC in the USA Although these codes do not govern installations of communication equipment under the exclusive control of communication utilities it is good design and installation practice for the new equipment or system to comply with the intent of the appropriate Code For systems installed at the customer premises outside of the above
60. V A2 136 RMC 27V B2 137 RMC LNA1 138 139 140 RMCLNA4 141 RMC LNA5 142 RMCLNA6 143 RMCLNA7 144 RMC LNA8 145 RMC LNA9 146 RMCLNA10 147 RMCLNA11 148 RMCLNA12 149 ICRM 1 152 ICRM2 153 ICRM3 154 ICRM 4 155 411 2021 111 Standard 01 01 June 1996 Datafilling a Metro Cell Site 6 5 Table VCHINV CCHINV LCRINV The frequency assignment tables should be datafilled so that the TRU location in the Metro RF Frame with respect to the port card of the ICRM are correctly identified in the datafill tuple Each physical location in the Metro RF Frame corresponds with a port number of the NT8X47BA Port Card of the ICRM The datafill of these frequency assignment tables requires that the P side card and port number be defined Each NT8X47BA Port Card of the ICRM must be cabled to either J205 or J206 of the Metro RF Frame RIP Table 6 6 is a matrix of NT8X47BA port connections to the TRU number of the Metro RF frame for each RIP connector Table 6 6 Note Even though channels can be datafilled on every Port Card and on almost every Port Exception Card 8 Port 14 Card 8 Port 15 Card 9 Port 13 Card 9 Port 14 and Card 9 Port 15 it is recommended that the Control Channel and its backup Locate Receiver Analog or Digital be datafilled on separate Port Cards see Frequency Assignment Example NT8X47BA Port Numbers for Metro TRU locations
61. Wireless Networks DualMode Metrocell Cell Site Description 411 2021 111 Standard 01 01 June 1996 NORTEL NORTHERN TELECOM Wireless Networks DualMode Metrocell Cell Site Description Product release DualMode Metrocell Document release Standard 01 01 Date June 1996 Document Number 411 2021 111 1996 Northern Telecom Printed in the United States of America NORTHERN TELECOM CONFIDENTIAL The information contained in this document is the property of Northern Telecom Except as specifically authorized in writing by Northern Telecom the holder of this document shall keep the information contained herein confidential and shall protect same in whole or in part from disclosure and dissemination to third parties and use same for evaluation operation and maintenance purposes only Information is subject to change without notice DMS DMS SuperNode DMS MSC DMS HLR DMS 100 and MAP are trademarks of Northern Telecom iv Publication history June 1996 Standard 01 01 Initial release of document 411 2021 111 Standard 01 01 June 1996 Contents Publication history iv About this document ix Intended audience for this publication How this publication is organized x Applicability of this publication x List of terms xi Introduction 1 1 Northern Telecom s DualMode Metrocell 1 1 The 800 MHz cellular band 1 4 Cell Site Configurations 2 1 Overview 2 1 Omni configuration 2
62. age return current flow through the supplementary grounding conductor 2 Minimize equalization currents between frames via the grounding conductors and antenna coax etc This is achieved by adhering to an isolated mesh grounding concept The mesh concept means that all the metal surfaces frames shelves PCP ground planes and module chassis within the system are bonded together with ideally as little contact resistance as practically possible Isolation means that the system grounding mesh only makes contact with other grounded systems at the local ground reference or BPG This helps to reduce the chance of ground currents from other systems from flowing through the Metrocell grounding conductors Isolation from building steel should be facilitated by providing an isolation pad underneath each frame DMS MTX DualMode Metrocell Cell Site Description 5 8 Power and Grounding Requirements DC coupled signals DC coupled signals are considered undesirable from a grounding point of view for the following reasons If a signal is routed to another system on a separate ground then isolation is lost due to a connection via the signal return Any noise on the system ground can resistively couple onto the signal potentially causing degradation in system performance for example bit errors on digital signals or unwanted noise pick up on analog signals The Metrocell contains the following DC coupled signal links TRU terminal interface
63. al or radiation points Locating Channel Receiver A radio receiver which is frequency agile and is used to measure and report the received signal strength in dBm of a channel A magnitude of attenuation expressed in dB for a given path between any two points DMS MTX DualMode Metrocell Cell Site Description xiv List of terms Modulation The process of placing information on an RF carrier The modulation technique may involve changing the amplitude frequency or phase of the carrier determined by the modulation index NES Non expanded Spectrum The frequency spectrum initially assigned to the cellular band The Non expanded Spectrum provides 333 channels to each of the two bands the A Band and the B Band Omni An antenna design which permits radiation in essentially all H Plane azimuths In cell sites an Omni configuration means a single set of omni antennas is used for all channels 1 4 DQPSK Variation of Differential Quadrature Phase Shift Keying used in D AMPS IS 54 for improved spectral characteristics and phase resolution Permissible phase changes are integral multiples of 7 4 radians 45 degrees 7 4 is used to reduce the peak to root mean square ratio requirements for linear PAs Return loss A logarithmic relationship of the incident signal to the reflected signal as expressed in dB by the following relationship Return Loss 10 log where Pi incident power in watts Pr reflected
64. ame 3 41 to 60 7109 1 6 2 TX RX 1 TX 4 61 to 80 10 to 12 1 6 2 TX RX 2 TX 5 81 to 100 13 to 15 1 8 2 TX RX 3 TX Configuration 1 3 to 24 1to3 2 2 2 TX RX with up to 24 2 25 to 48 4to 6 2 4 2 TX RX 2 TX channels per RF Frame 3 49 to 72 7109 2 6 2 TX RX 4 TX 4 73 to 96 10 to 12 2 6 2 TX RX 6 TX 5 97 to 120 13 to 15 2 8 2 TX RX 8 TX Note An additional TCM port card is required for the DRUM the ACU and the CSM2 DMS MTX DualMode Metrocell Cell Site Description 3 8 Cell Site Layouts 120 STSR cell site configuration The Metrocell in a 120 STSR configuration uses at least two equipment frames one CE Frame and one RF frame see Figure 3 4 Each TRU DPA Shelf and its associated ATC on the RF frame support one of the three sectors With only one RF frame the maximum number of Voice Channels VCH supported by each sector is six since two of the eight TRUs on the TRU shelf have to be assigned as the Control Channel CCH and the Locate Channel Receiver LCR A 120 STSR Metrocell with one RF Frame requires six antennas one TX RX antenna and one RX only antenna for each sector see Figure 3 6 As traffic grows two additional RF frames can be added to accommodate more VCHs see Figure 3 5 A 120 STSR Metrocell with three RF Frames requires six antennas It may be three TX RX antennas and three RX only antennas or six TX RX antennas depending on the number of channels in each RF Frame An RF Frame with 2
65. and one RX only antenna for each sector The outputs of the two ATCs for each sector are combined through one phasing transformer and connected to a duplexer The output of duplexer is then connected to the main TX RX Antenna of that sector The diversity RX antenna of each sector is connected directly to the Receive Multicoupler RMC of that sector Figure 3 9 shows the frame layout and Figure 3 11 shows the block diagram of a 60 STSR Metrocell with four RF Frames Control Channel redundancy Control Channel CCH redundancy is commonly provided with a Locate Channel Receiver LCR backup With two RF Frames the CCH of each sector is assigned to position 1 on the TRU DPA Shelf of that sector and the LCR is assigned to position 4 on the same shelf With four RF Frames a typical assignment of the CCH and LCR for each sector is listed below Control Channel Locate Channel Receiver Sector X RF Frame 1 TRU Shelf 1 Position 1 RF Frame 1 TRU Shelf 1 Position 4 Sector Y RF Frame 2 TRU Shelf 1 Position 1 RF Frame 2 TRU Shelf 1 Position 4 Sector Z RF Frame 2 TRU Shelf 3 Position 1 RF Frame 2 TRU Shelf 3 Position 4 Sector U RF Frame 3 TRU Shelf 1 Position 1 RF Frame 3 TRU Shelf 1 Position 4 Sector V RF Frame 4 TRU Shelf 1 Position 1 RF Frame 4 TRU Shelf 1 Position 4 Sector W RF Frame 3 TRU Shelf 3 Position 1 RF Frame 3 TRU Shelf 3 Position 4 This arrangement will have the CCH and
66. aster Oscillator Cell Site Monitor 2 Receive Multicoupler Integrated Cellular Remote Module AutoTune Combiner Transmit Receive Unit Dual Power Amplifier DMS MTX DualMode Metrocell Cell Site Description 1 4 Introduction The 800 MHz cellular band In an 800 MHz North American cellular system a frequency spectrum of 50 MHz is available for service Operating from 824 to 894 MHz including the expanded spectrum the system conforms to the AMPS IS 54 protocol Typically this range is divided into 832 radio frequency RF channelShe 832 RF channels are divided into two bands A and B The two bands are identified as follows e Band A for Non Wireline Operators e Band B for Wireline Operators Each frequency band has 416 RF channels Of these 416 RF channels typically 21 depending on the frequency plan are assigned as the Control Channels CCH and the remaining 395 are Voice Channels VCH See Figure 1 4 and Table 1 1 Figure 1 4 Channel assignment for 800 MHz cellular systems Base Station Frequency MHz RX 824 825 835 835 846 5 849 851 TX 869 870 A Band 880 CCH 890 891 5 894 896 Band NL A A B A B R 991 1 333 666 716 799 1023 Channel Number R Reserved Channel assignment Band A 416 channels Band B 416 channels Control channels 313 333 21 334 354 21 Optional TDMA secondary control channels 688 708 21 737 757 21 Voice channel
67. ck with a the 24 Vdc power battery return tag supply BR conductor 48 60 dc power L typically black with a tag 0 V grounded side of dc power return L typically black with a the 48 60 Vdc power battery return BR tag supply conductor grounded or bonded framework ground FG green 50 yellow to ground framework bonding 50 conductor grounded or bonded ac equipment none green N America to ground grounding conductor green yellow Europe Framework Ground or Framework Bonding conductors are also known as Protective Earth as per IEC 950 The 50 50 green yellow ratio must be no less than 30 and no more than 70 for either color Note Countries outside North America may have different labeling and color coding of cables Follow the safety standards for installation and maintenance of electrical equipment in your country accordingly DMS MTX DualMode Metrocell Cell Site Description 5 10 Power and Grounding Requirements 411 2021 111 Standard 01 01 June 1996 6 1 Datafilling a Metro Cell Site Datafill Overview Table 6 1 This section outlines the differences which you should consider when datafilling a Metro site It makes no attempt at dealing with the entire datafill procedure and assumes that you are familiar with the MTX Cell Site Datafill Procedures Please refer to NTP 411 2131 461 ICP Datafill Guidefor information concerning the e
68. cription Manual Wireless Customer Documentation Manager Nortel P O Box 833858 Richardson Texas 75083 3858 Phone 214 684 1770 Fax 214 684 3977 Copyright 1996 Northern Telecom NORTHERN TELECOM CONFIDENTIAL The information contained in this document is the property of Northern Telecom Except as specifically authorized in writing by Northern Telecom the holder of this document shall keep the information contained herein confidential and shall protect same in whole or in part from disclosure and dissemination to third parties and use same for evaluation operation and maintenance purposes only Information is subject to change without notice DMS DMS SuperNode DMS MSC DMS HLR DMS 100 and MAP are trademarks of Northern Telecom Publication number 411 2021 111 Product release DualMode Metrocell Cell Site Description Manual Document release Standard 01 01 Date June 1996 Printed in the United States of America NORTEL NORTHERN TELECOM
69. dditional VCHs supported The minimum number of trunks required is shown in Table 6 2 for various Metro configurations with the maximum number of DRUs Table 6 2 Trunk requirement for different Metrocell configurations Metro Site Type Minimum Number of Trunks assigned to Table CLLI field TRKGRSIZ Omni site 24 120 Sectored 1 RF Frame 24 60 Sectored 2 RF Frames 48 Note It is a good practice to assign more trunks than is necessary to prevent from having to backtrack through all the Tables to change the number in Table CLLI Table ACUALM A Metrocell has input alarm points hardwired to the ACU The alarm points for the CE Frame remain the same as per the standard NT800DR Macro Cell Site although their numbering scheme is changed However the Metro RF Frame alarm points differ The alarm point configuration for each Metro RF Frame has 23 alarm points to be datafilled in Table ACUALM The alarm points monitor the e TRU DPA cooling fans e AandB side DC power filters e cavities DC power and cooling fan The alarm points are also assigned for each DRU in the frequency assignment tables CCHINV LCRINV VCHINV of the Metro Cell Site The MTX alarm point numbers for the hardwired Metro RF frame alarm points are listed in Table 6 3 and Table 6 4 for the MTX Table ACUALM 411 2021 111 Standard 01 01 June 1996 Datafilling a Metro Cell Site 6 3 Table 6 3 MTX Datafill Alarm Points for Metro RF Fra
70. e Table 3 3 for Note 1 RMC TRU Shelf connection MIMAS Antenna A 1 TX i Control Channel A Note 2 A3 of 7 RX Duplexer ANT E Position 2 e 1 DPA 1 ze SE A8 Antenna lt 23 zi E Diversity a Fo 91 RX Duplexer ANT recelve TRU DPA pom v Se Position 3 nm Shelf1 us B8 f 22 1 tro 0 i DPA 4 mo See Table 3 2 for 5 cud ru Eo m EO Notes ATZ us 1 For diagram clarity only one RF Frame is shown Other RF Frames with 21 channels or Or mor are connected and operated identically to that of RF Frame 1 ST 2 TRU1 at TRU DPA Shelf 1 of RF Frame 1 is Te assigned as the CCH and TRU4 at the same DPA 8 EN shelf is assigned as the backup CCH o M M 1 1 m DPA 9 2 or 22 L EO TRU DPA hTC3 Sheit3 E DE Do z EO N DPA 12 25 ro Frame ICRM HSMO 411 2021 111 Standard 01 01 June 1996 Cell Site Layouts 3 5 Transmit cabling In the transmit path the output of each Transmit Receive Unit TRU is connected to the input of each corresponding power amplifier PA on the Dual Power Amplifier DPA module The output of each power amplifier PA is i
71. exer ANT receive oN I Position 2 DPA 4 20 ES 8 Antenna 0 Bl dm Sector Y Sector Y RAE Diversit sity E receive on ST B8 e wo D 2 Iu GE e t a From Fo RMC 3A A3 TRU DPA OT Sheit 2 f ou um Sector V or lt A1 Mai p 2t 23 EZ lt As oH RX Duploxer ANT receive EN en2 A8 From ATC 3 on Control Channel UT BF Frame 4 V Anrenna Mel 1 f RF Frame 1 for Sector z RN Le lt Sector 5 iit 1483 Diversity DPA 9 zt 5 receive ID Sector Z Fe 5 m ER i Antenna Sector W TRU DPA zT 8 O TC3 ae lt TX Main To Sector Z of Rx Duplexer antl receive Main Antenna Position 3 th rough A8 Duplexer 3 on j RF Frame 3 Antenna RF Frame 2 wo lt B2 J Sector W ta x lt DPA 1 55 GE 3 9 Diversity zy 23 E receive ES ro E Fo B8 Frame ICRM HSMO Note For diagram clarity only RF Frames 1 and 2 are shown RF Frames 3 and 4 are connected and operated identically to that of RF Frames 1 and 2 respectively for Sectors U V and W Refer to Tables 3 13 and 3 15 for the complete cabling information 411 2021 111 Standard 01 01 June 1996 Cell Site Layouts 3 27 Transmit cabling In the transmit path
72. hance call processing in the cellular infrastructure Digital Locate Receiver The TDMA equivalent of the Locating Channel Receiver See LCR The acronym for Nortel s family of cellular switches Digital Multiplex Switch Mobile Transmission Exchange Dual Power Amplifier A module which contains two discrete power amplifiers that provide amplification of the RF signal for the two corresponding Transmit Receive Units TRU on the same TRU DPA shelf DualMode Radio Unit Monitor A test and monitor unit capable of radio communications with any Voice Channel of the local Transmit Receive Units TRU in the digital mode A device that consists of two pass or pass reject filters configured to provide a common output port for both transmit and receive frequencies Digital Verification Color Code The TDMA equivalent of DCC Expanded Spectrum The additional frequency spectrum assigned to the cellular band The Expanded Spectrum in the A Band consists of the A Band and the A Band while the B Band is the Expanded Spectrum for the B Band The Expanded Spectrum provides a total of 416 channels to each of the two bands 411 2021 111 Standard 01 01 June 1996 List of terms xiii FDMA Filter FM Frequency Division Multiple Access A frequency assignment arrangement whereby all users share the total frequency allotment and each frequency is assigned to a given user at access on a multiple user access basis A frequency selecti
73. he architecture of a DualMode Metrocell system and Figure 1 2 is a block diagram of the product of the system DMS MTX DualMode Metrocell Cell Site Description 1 2 Introduction Figure 1 1 System architecture of a DualMode Metrocell DMS MTX Digital Transmission Facility DualMode Metrocell Figure 1 2 Digital ready cellular product DMS MTX 9 DRU voice amp control y voice and DRUM ICP control p ICRM control CSM2 control ACU SWITCH SITE CELL SITE There are at least two equipment frames in a Metrocell a Universal Common Equipment CE Frame and a Metro Radio Frequency RF Frame The cell site can be expanded or sectorized by adding more Metro RF frames as traffic grows The number of Metro RF frames is determined by the cell site configuration and the channel capacity Figure 1 3 shows the frames and the components of a DualMode Metrocell 411 2021 111 Standard 01 01 June 1996 Introduction 1 3 Figure 1 3 Basic components of a DualMode Metrocell Universal CE Frame Metro RF Frame Legend RIP DRUM ACU HSMO CSM2 RMC ICRM ATC TRU DPA Duplexer one to three TRU DPA Shelf TRUs amp DPAs Dual RMC one to six TRU DPA Shelf TRUs amp DPAs Blank Panel TRU DPA Shelf TRUs amp DPAs Base Rack Interface Panel DualMode Radio Unit Monitor Alarm Control Unit High Stability M
74. he same room unless the battery is floating A dedicated battery cell site configuration residing in the same equipment room would not raise any concerns CSA would have no objections to a grounding 411 2021 111 Standard 01 01 June 1996 Power and Grounding Requirements 5 7 scheme if the system input power is less than 50V thus not requiring any ground see CEC par 10 102 CEC par 10 102 Two wire direct current systems supplying interior wiring and operating at not more than 300 V or less than 50 V between conductors shall be grounded unless such system is used for supplying industrial equipment in limited areas and the circuit is equipped with a ground detector The interpretation of objectionable current is to be aligned with the leakage current limits as defined in CSA 950 maximum 5 current rating or CSA 225 maximum 10 current rating The NEC definition of objectionable current is any current not suitable for a particular installation which would include leakage current limits grounding conductor size electrochemical potential between dissimilar metals etc Grounding requirements for the Metrocell is to keep the total return current on the grounding network below 5 of the total system DC current draw This is done by 1 Making the desired return path a much lower resistance than the undesired return path that is current divider principle Eliminating the grounding conductor at the power plant will help discour
75. itecture of a DualMode Metrocell 1 2 Figure 1 2 Digital ready cellular product 1 2 Figure 1 3 Basic components of a DualMode Metrocell 1 3 Figure 1 4 Channel assignment for 800 MHz cellular systems 1 4 Figure 2 1 Omni N 7 frequency reuse plan 2 2 Figure 2 2 120 N27 sectorized frequency reuse plan 2 3 Figure 2 3 60 N 4 sectorized frequency reuse plan 2 4 Figure 3 1 Frame layout of an omni Metrocell with one RF frame front view 3 2 Figure 3 2 Block diagram of an omni Metrocell with up to 20 channels in one RF Frame 3 3 Figure 3 3 Block diagram of an omni Metrocell with 21 to 24 channels in one RF Frame 3 4 411 2021 111 Standard 01 01 June 1996 Contents vii Figure 3 4 Figure 3 5 Figure 3 6 Figure 3 7 Figure 3 8 Figure 3 9 Figure 3 10 Figure 3 11 Figure 5 1 Figure 6 1 Figure 6 2 Frame layout of a 120 STSR Metrocell site with one RF frame front view 3 9 Frame layout of a 120 STSR Metrocell site with three RF frames front view 3 9 Block diagram of a 120 STSR Metrocell using one RF Frame 3 10 Block diagram of a 120 STSR Metrocell using three RF Frames 3 11 Frame layout of a 60 STSR Metrocell with two RF frames front view 3 22 Typical frame layout of a 60 STSR Metrocell with four RF frames front view 3 22 Block diagram of a 60 STSR Metrocell with two RF Frames 3 23 Block diagram of a 60 STSR Metrocell with four RF Frames 3 25 Power distribution for the CE and RF Frames in a Metrocell 5 5
76. itter 6 TRU Shelf 3 Main antenna Sector X RMC 1A A4 Splitter 1 Main antenna Sector Y RMC 2A A4 Splitter 2 Main antenna Sector Z 4 RFFrame2 Splitter3 Diversity antenna Sector X RMC 1B B4 shelf 1 Splitter 4 Diversity antenna Sector Y RMC 2B B4 Splitter 5 Diversity antenna Sector Z RMC 3B B4 Splitter6 Main antenna Sector X RMC 1A A5 Splitter 1 Main antenna Sector Y RMC 2A A5 Splitter 2 Sector Y Main antenna Sector Z RMC RF Frame 2 Splitter3 Diversity antenna Sector X RMC 1B B5 shelf 2 Splitter 4 Diversity antenna Sector Y RMC 2B B5 Splitter 5 Diversity antenna Sector Z RMC 3B B5 Splitter6 Main antenna Sector X RMC 1A A6 Splitter 1 Main antenna Sector Y RMC 2A A6 Splitter 2 Main antenna Sector Z RFFrame2 Splitter3 Diversity antenna Sector X RMC 1B Be shelf 3 splitter 4 Diversity antenna Sector Y RMC 2B B6 Splitter 5 Diversity antenna Sector Z RMC 3B B6 Splitter 6 Main antenna Sector X RMC 1A A7 Splitter 1 Main antenna Sector Y RMC 2A A7 Splitter 2 Main antenna Sector Z 7 RF Frame Splitter Diversity antenna Sector X RMC 1B B7 shelf 1 Splitter 4 Diversity antenna Sector Y RMC 2B B7 Splitter 5 Diversity antenna Sector Z RMC 3B B7 Splitter 6 Main antenna Sector X RMC 1A A8 Splitter 1 Sector Z Main antenna Sector Y RMC 2A A8 Splitter 2 Main antenna Sector Z
77. k diagram of a 120 STSR Metrocell using three RF Frames RF Frame 1 See Table 3 9 for See Tables 3 6 and 3 7 RMC TRU Shelf connection for PA ATC connection Notes Bays Senin WV Antenna is Sector X Control Chann AS dA po SOCIO I Rx Duplexer ANT receive ne Position 2 1 DPA 1 gs Antenna 23 m x Sector X AT T EO g RX Duplexer ANT ATC 1 Shelf 1 Position 3 Note 2 1 LU m A oN B zo co 1 2 i Sector Y on 5 TX Main gs Tui 2 RX Duplexer ANT receive E Position 2 22 tc EE RF Frame 2 m TX Sector Y O ATC 2 lt 9 RX Duplexer ANT Diversity Position 3 receive i La zb i Lo DPA8 22 25 co i i 5 2 Main DPA 9 2 Tui
78. me Metro RF Shelves Fan Alarm Metro RF Frame ATC Points Alarm Points Shelf FAN2 FAN4 ATC Cavities Fan Pwr 1 0 1 2 3 1 20 21 2 4 5 6 7 2 22 23 3 8 9 10 11 3 24 25 4 12 13 14 15 4 26 27 5 32 33 34 35 5 52 53 6 36 37 38 39 6 54 55 7 40 41 42 43 7 56 57 8 44 45 46 47 8 51 58 59 9 64 65 66 67 9 80 84 85 10 68 69 70 71 10 81 86 87 11 72 73 74 75 11 82 88 89 12 76 77 78 79 12 83 90 91 13 96 97 98 99 13 112 116 117 14 100 101 102 103 14 113 118 119 15 104 105 106 107 15 114 120 121 16 108 109 110 111 16 115 122 123 17 160 161 162 163 17 176 180 181 18 164 165 166 167 18 177 182 183 DMS MTX DualMode Metrocell Cell Site Description 6 4 Datafilling a Metro Cell Site Table 6 4 MTX Alarm Points Datafill Numbers for Metro RF Frame Metro RF Frame Power Filter Alarm Points Metro RF Frame Power Filter A Side Power Filter B Side 28 29 The MTX Datafill alarm points for the CE frame are shown in Table 6 5 Table 6 5 MTX Alarm Points Datafill Numbers for Metro CE Frame components Alarm Alarm Alarm Alarm Alarm Alarm Alarm Alarm name point name point name point name point HSMO 27V AT 128 HSMO 27V 129 HSMO 1 130 HSMO 2 131 CSM2 132 RMC 27V A1 134 27V B1 135 RMC 27
79. ment will have the RF channels on the same carrier frequency in different areas to be separated from one another by the greatest possible distance so that co channel interference is minimized However 60 sectorization is difficult to expand and optimize due to a more demanding environment of frequency re use 60 Nz4 sectorized frequency reuse plan 411 2021 111 Standard 01 01 June 1996 3 1 Cell Site Layouts This chapter provides information on the layout and cabling of the different DualMode Metrocell configurations Important For ALL Metrocell cell site configurations the frequency plan used should have a minimum of 21 channel spacing 630 kHz between the channels in one RF Frame Note The DualMode Metrocell supports only Transmit Receive Units TRU with Product Engineering Code PEC NTAX98AA No other radios can be used The NTAX98AA TRU supports full digital and analog transmissions in accordance with IS 54 and IS 41 standards Omni cell site configuration The Metrocell in an omni configuration uses at least two equipment frames one CE Frame and one RF frame see Figure 3 1 With only one RF frame the maximum number of Voice Channels VCH supported by the cell site is 22 since two of the 24 TRUS have to be assigned as the Control Channel CCH and the Locate Channel Receiver LCR As traffic grows four additional RF frames can be added to the site to accommodate up to
80. minimum of 30 inches wide 400 Ib 80 Ib sq ft 950 Ib 115 Ib sq ft DMS MTX DualMode Metrocell Cell Site Description 7 4 DualMode Metrocell Cell Site Specifications Paint Maple Brown SCP 717 R1 Marking Nortel Logo Packaging Frames ShockAir bubble sheet and Styrofoam packaging material Vibration Styrofoam sandwich pallet Bracing and support Wood 2 x 4 braces Moisture 5 mil polyethylene Transport Air ride shock Modules Separate shipping carton Environmental Operating temperature Normal operation 5 C to 40 C 41 to 105 Short term operation 0 C to 50 C 32 F to 120 F Note Short term refers to a period of not more than 72 consecutive hours and a total of not more than 15 days in one year Thermal cycling Capable of withstanding the changes in temperature at the rate of 1 C 1 8 F in three minutes over the short term operating temperature range Operating Relative Humidity 20 to 95 non condensing over nominal temperature range and not to exceed 0 024 Ib of water Ib of dry air Altitude 61 meters 200 feet below sea level to 4000 meters 13 000 feet above sea level Shock and vibration Screw lock on required modules 411 2021 111 Standard 01 01 June 1996 DualMode Metrocell Cell Site Specifications 7 5 Earthquake Meet earthquake requirements of Zone 1 and Zone 2 as defined by Bellcore TR NWT 000063 Fixed equipment anchorage Thermal dissipation for Metrocell
81. n automatic tuning system which monitors the transmitted RF and automatically tunes itself to that frequency The upper 333 channels Channel 334 666 of the cellular band normally assigned to a wireline operator in the US and Canada The Expanded Spectrum provides 83 more channels Channel 717 799 in the B Band Bit Error Rate The ratio of error bits to the total number of transmitted bits It is a measurement of quality of the digital connection Carrier RF CCH An unmodulated radio signal Normally it is a pure sine wave of steady frequency amplitude and phase Control Channel sometimes referred to as the Signaling Channel which is always in use to enable call setup and registration DMS MTX DualMode Metrocell Cell Site Description xii List of terms Cell CSM2 dBm dBW DCC DLR DMS MTX DPA DRUM Duplexer DVCC ES By theoretical design it is the geographical representation of the cellular coverage area or service area defining both the associated size and shape Cell Site Monitor 2 A unit that provides analog testing and monitoring capabilities at the cell site Decibels above a milliwatt Unit of power measurement popular in wireless telephony general telephony audio and microwave Decibels above a watt Unit of measurement for radio power Digital Color Code An identifying code associated with the control channel of the cellular base transmitter which is used to en
82. nput to an 8 channel AutoTune Combiner ATC The output of the ATC is connected to the Transmit TX port of the duplexer For RF Frames using more than one ATC the outputs of are combined together and connected to the TX port of the duplexer The duplexer serves as the interface between the antenna system and the RF frame Table 3 1 lists the connection between the PAs and the ATC for an RF Frame with up to 20 channels Table 3 2 lists the connection between the PAs and the ATC for an RF Frame with 21 channels or more RERO 1 PA to ATC connection for an omni Metrocell with up to 20 channels From Through To DPA 1 Port1 CCH ATC1 Port 1 DPA 1 Port2 ATC1 Port 2 DPA 2 Porti ATC1 Port TRU DPA _ DPA 2 Port2 ATC Shelf 1 Port 4 Shelf 1 DPA 3 Porti 1 Port 5 DPA 3 Port2 ATC1 Port 6 DPA 4 Port1 ATC1 Port 7 DPA 4 Port2 ATC1 Port 8 DPA 5 Port1 ATC2 Port 1 DPA 5 Port2 ATC2 Port 2 Duplexer Antenna DPA 6 Porti ATC2 Port 3 Position 2 Main receive TRU DPA DPA 6 Port2 ATC Shelf2 ATC2 Port 4 Shelf 2 DPA 7 Port ATC2 Port 5 DPA 7 Port 2 ATC2 Port 6 DPA 8 Port1 ATC2 Port 7 DPA 8 Port 2 ATC2 Port 8 DPA 9 Port1 Port 1 TRU DPA DPA9 Port2 ATC Shelf 3 ATC3 Port 2 shelf 3 DPA 10 Porti ATC3 Port 3 DPA 10 Port2 Por
83. nt batteries provide backup power for the equipment in case of power outage The backup time is typically 8 hours at the site with no engine alternator or 3 hours at the site with an emergency engine alternator The grounding system of radio and transmission equipment typically conform to the Common Bonding Network CBN bonding topology Switching equipment conforms to the Isolated Bonding Network IBN grounding topology typically Star IBN or Sparse Mesh IBN Some systems also use a Star IBN bonding topology where the Logic Return LR is isolated from the Framework Ground FG except at one clearly defined point 411 2021 111 Standard 01 01 June 1996 Power and Grounding Requirements 5 5 Frame power distribution Figure 5 1 shows the distribution network for supplying power to the cell site components in the CE and RF Frames Figure 5 1 Power distribution for the CE and RF Frames in a Metrocell D gt gt D D gt D Cl 21 Gd amp G 415 1 1 M 1 lt lt ae a RIP Breaker RIP Breaker DRUM Shelf Duplexer Shelf Breaker10 ACU Shelf Breakeri1 Breaker9 Breaker12 F ATC Shelf 3 Breaker3 Breaker12
84. nterface Alarms Analog mode 119 dBm Digital mode 113 dBm Receiver de sensitization lt 3 dB Antenna port impedance 50 ohms unbalanced Audio impedance 600 ohms balanced Audio output levels Nominal 18 dBm 2 9 kHz Adjustable in fractional units up to two decimal points from 28 0 dBm to 10 0 dBm for the transmit path and from 28 0 dBm to 16 0 dBm for the receive path Base station 192 points Auxiliary alarms 16 assemble points cabinet power tower etc 411 2021 111 Standard 01 01 June 1996 DualMode Metrocell Cell Site Specifications 7 3 DC Power Requirements Grounding Voltage Ripple Spurious 0 005 10 MHz Noise Voltage stability Voltage response Voltage over under shoot Power Distribution Requirements Channel Frames Mechanical Rack dimension Clearance and Access Weight CE frame RF Frame As specified in Northern Telecom s NTP 297 1001 156 Nominal 27 0 Vdc 0 5 Vdc Range 21 0 Vdc to 29 0 400 millivolts 55 dBm Q 0 3 to 3 4 KHz 32 dBrnC 600 ohms bridged 1 of pre set voltage 0 100 load lt 600 ms for a step of 10 70 load 20 of pre set voltage for a step of 10 7096 load Current Breakers Height 84 213 4 cm Width 22 56 cm Depth 24 61 cm including cables and excluding unit handles Ceiling 8 feet 7 5 feet after cable tray installation Front aisle 3 feet Rear aisle 2 feet Building access door are required to be a
85. ntire Cell Site Table Datafill A Metro Cell site looks for all intensive purposes like any other ICP ICRM cell site to the MTX It uses all the same tables loads and parameters as do the previous ICP ICRM methods The outstanding difference which is apparent is that more Trunks and DSPMs will be required to service the additional radios that the Metro RF frame is equipped with The following datafill tables will be addressed in the view of differences to keep in mind when datafilling a Metro Cell Site Datafill differences of the Metrocell from an NT800DR cell Table Metro differences CLLI More trunks should be assigned as each RF frame can be equipped with 8 more radios than a standard macrocell frame ACUALM PA Fan Alarms are laid out differently with the new RF frame CCHINV The RF frame location of the DRU should be correctly identified in relation to the ICRM P side card port number LCRINV The RF frame location of the DRU should be correctly identified in relation to the ICRM P side card port number VCHINV The RF frame location of the DRU should be correctly identified in relation to the ICRM P side card port number DMS MTX DualMode Metrocell Cell Site Description 6 2 Datafilling a Metro Cell Site Table CLLI Table CLLI defines both a name and a quantity to a certain MTX trunk assignment For the Metro application the number of trunks assigned in TRKGRSIZ should be capable of supporting the a
86. ode Metrocell Installation Manual e DualMode Metrocell Operation and Maintenance Manual e DualMode Metrocell Troubleshooting Guidelines The manual suite for the DualMode Metrocell provides information on cell site configurations hardware components planning and installation procedures as well as maintenance and troubleshooting methods Intended audience for this publication The intended audience for this set of manuals is the cell site technicians and the planning engineers who require information in the maintenance and planning of a DualMode Metrocell The Functional Description Manual provides a technical reference foundation for the other documents in the documentation suite and is written for all The Planning and Engineering Guidelines is written for system planning personnel in implementing new cells or expanding existing cell sites in a cellular system The Operation and Maintenance Manual and the Troubleshooting Guidelines that provide information on problem recognition and preventive maintenance are written for cell site technicians to assist them in troubleshooting and performing their routine work DMS MTX DualMode Metrocell Cell Site Description x About this document The document suite assumes that the reader possesses a basic knowledge of the cellular system and radio propagation and is familiar with measurement units incorporated in the system Therefore this document will not provide detailed information on
87. ombiner ATC NTFB17AA FRU ATC Phasing Transformer NTFB18AA FRU ATC Transformer Phasing Cable A Band NTFB1801 FRU ATC Transformer Phasing Cable B Band NTFB1802 FRU ATC Phasing Cable A Band NTFB19AA FRU ATC Phasing Cable B Band NTFB19AB FRU ATC Shorting Stub NTFB20AA FRU ATC Duplexer Cable 1 NTFB21AA FRU ATC Duplexer Cable 2 NTFB21AB FRU ATC Duplexer Cable 3 NTFB21AC FRU TRU DPA Shelf NTFB23AA FRU TRU DPA Shelf Fan Module Assembly NTFB24AA FRU PA ATC Coax Cable Assembly 1 4 NTFB34AA FRU PA ATC Coax Cable Assembly 5 8 NTFB34AB FRU TRU PA ATC Alarm Cable NTFB35AA FRU DMS MTX DualMode Metrocell Cell Site Description 4 2 Cell Site Components Table 4 1 Major components of a DualMode Metrocell Note FRU Field Replaceable Unit Description PEC Cable DATA 25 Pair TRU DPA Shelf 1 NTFA1004 FRU Cable DATA 25 Pair TRU DPA Shelf 2 NTFA1008 FRU Cable DATA 25 Pair TRU DPA Shelf 3 NTFA1009 FRU Transmit Receive Unit TRU NTAX98AA FRU Dual Power Amplifier DPA NTFB38AA FRU CE Frame Alarm Cable NTFB41AA FRU Universal CE Frame NT3P64CA Universal CE RIP Shelf DualMode Radio Unit Monitor DRUM sniffer NTAX40DA FRU whip antenna NTAX40CA Alarm Control Unit ACU NT3P20GA FRU Output Contact card NT3P20EA FRU Enhanced ACU Input card NT3P20FB FRU High Stability Master Oscillator HSMO NT3P20JB FRU Cell Site Monitor 2 CSM2 NT3P70AB FRU
88. onnected to the A input of the Receive Multicoupler RMC through the receive port of the duplexer of that sector The diversity antenna connects directly to the B input of the RMC Distribution of the reverse path frequencies is accomplished by RF splitters within each RF frame Table 3 14 lists the connection between the RMCs and the RF splitters in a 60 STSR Metrocell with two RF Frames Table 3 15 lists the connection between the RMCs and the RF splitters in a 60 STSR Metrocell using four RF frames Table 3 14 RMC to splitter connections for a 60 STSR Metrocell with two RF Frames From Through To Main antenna Sector X primary sector RMC 1A A1 Splitter 1 Main antenna Sector Y right adjacent sector RMC 2A A1 Splitter 2 Sector X Main antenna Sector U rear sector RMC 4A A1 RF Frame 1 Splitter 3 Diversity antenna Sector X primary sector RMC 1B B1 TRU shelf 1 Splitter 4 Diversity antenna Sector U rear sector RMC 4B B1 Splitter 5 Diversity antenna Sector W left adjacent sector RMC 6B B1 Splitter 6 Main antenna Sector Y primary sector RMC 2A A2 Splitter 1 Main antenna Sector Z right adjacent sector RMC 3A A1 Splitter 2 Sector Main antenna Sector V rear sector RMC 5A A1 RF Frame 1 Splitter 3 Diversity antenna Sector Y primary sector RMC
89. ore are connected to their respective TX RX antennas in the same way as RF Frame 1 411 2021 111 Standard 01 01 June 1996 Cell Site Layouts 3 7 Receive cabling In the reverse path the receive signal from the main antenna is connected to the A input of the Receive Multicoupler RMC through the receive port of the duplexer The diversity antenna connects directly to the B input of the RMC Distribution of the reverse path frequencies is accomplished by RF splitters within each RF frame Table 3 3 shows the connection between the RMC and the splitters Table 3 3 RMC to splitter connections for an Omni Metrocell From Through To Main antenna RMC 1A A1 TRU Shelf 1 Splitter 1 Diversity antenna RMC 1B B1 TRU Shelf 1 Splitter 4 Main antenna RMC 1A A2 TRU Shelf 2 Splitter 1 Diversity antenna RMC 1B B2 TRU Shelf 2 Splitter 4 Main antenna 1 TRU Shelf 3 Splitter 1 Diversity antenna RMC 1B B3 TRU Shelf 3 Splitter 4 Component requirement Table 3 4 lists the components required for a Metrocell with one to five RF Frames An omni cell site requires only one Receive Multicoupler RMC Table 3 4 Component requirement for an omni Metrocell No of RF No of No of Duplexer ICRM TCM No of Frames TRUs ATCs per frame Port cards antennas Configuration 1 3 to 20 1to3 1 2 1 TX RX 1 RX with up to 20 2 21 to 40 4to 6 1 4 2 TX RX channels per RF Fr
90. ossible distance to minimize co channel interference However sectorization by virtue of the modified coverage areas and directional antenna usage permits greater reuse of frequencies for a given C I ratio Figure 2 2 120 N 7 sectorized frequency reuse plan Sector CELL6 Z Sector Sector CELL 7 Sector CELL 5 Z Sector X Sector CELLA Sector X Sector Sector CELL 3 Z Sector Y Sector CELL 5 Z Sector CELL 6 2 x Sector CELL 7 se CELL 5 2 Sector CELL 1 2 Sector X Sector Sector CELL 3 Sector CELL 2 xu CELL 4 Z Z Sector Y Sector CELL 3 2 DMS MTX DualMode Metrocell Cell Site Description 2 4 Cell Site Configurations 60 sectorized configuration Figure 2 3 In a 60 N24 sectorized configuration the 416 RF channels are divided among a group of four cells Each cell contains a maximum of 104 RF channels with six Control channels for each cell Since each cell is further divided into six sectors each sector will contain a maximum of 16 or 17 RF channels with one Control channels for each sector The RF channels are reused by other groups of cells Figure 2 3 shows the layout of a 60 N24 sectorized frequency reuse plan The RF channels used in Cell 1 of a cluster are reused in Cell 1 of other clusters channels in Cell 2 are reused in Cell 2 of other clusters and so on This arrange
91. ower feed and a TCM card No RF coaxial switch is required since the cavity of the LCR position on the ATC will tune to the CCH frequency when backup is required Figure 3 1 Frame layout of an omni Metrocell with one RF frame front view CE Frame RF Frame 1 CE RIP RF RIP Duplexer Duplexer Duplexer DRUM Position 3 Position Position 1 HSMO CSM2 TRU DPA RMC 1 Shelf 3 9 TRU DPA Shelf 2 TRU DPA BI EET aie ank Panel QE Shelf 1 Note Fora frame with up to 20 channels only one duplexer located in position 2 is required For a frame with 21 channels or more two duplexers located in positions 2 and 3 are required 411 2021 111 Standard 01 01 June 1996 Cell Site Layouts 3 3 Figure 3 2 Block diagram of an omni Metrocell with up to 20 channels in one RF Frame RF Frame 1 See Table 3 3 for Note 1 RMC TRU Shelf connection Antenna LA Een Main UN A TX receive Control Channel A2 Note 2 ja3 hx Duplexer ant a EE Position 2 DPA 1 zs zu A8 Antenna M e 55 21 m Diversit
92. power in watts The strength of the signal expressed in dB reflected by a load back into a transmission line due to impedance mismatch 14 dB corresponds to a VSWR of 1 5 1 Reverse path The path from cellular subscriber terminal to cell site RF Radio Frequency Electromagnetic energy of the frequency range just above the audible frequencies and extending to visible light RIP Rack Interface Panel The RIP is the interface between the cell site power supply and the cell site equipment 411 2021 111 Standard 01 01 June 1996 List of terms xv RMC Receive Multicoupler A device for amplifying the input received from a single antenna and providing multiple outputs for a group of receivers RSSI Received Signal Strength Indicator A measurement of the received RF signal strength measured at the base station or the subscriber terminal It is expressed in dBm SAT Supervisory Audio Tone A tone of 5970 6000 or 6030 Hz which modulates the AMPS voice channel along with voice audio It is generated by the cell site and is repeated by the mobile back to the cell site The repeated SAT is checked by the cellular system to confirm the continuity of the complete RF path from the cell site to the subscriber terminal and back to the cell site SCC SAT Color Code The datafill values corresponding to the various SATs 00 for 5970 Hz 01 for 6000 Hz 10 for 6030 Hz Sector A theoretical wedge shaped part of the coverage area of one
93. ries is required in a minimum time following an emergency discharge A typical operating voltage range at the Power Distribution Plant of a Metrocell should not exceed the range between 22 8 Vdc to 29 Vdc 22 8 Vdc assumes 1 V drop from the batteries to the Rack Interface Panel RIP and 0 8 V from the RIP to the load The operating voltage range of a specific system could vary The power plant supplies two designated as A and B power feeds to each Metrocell frame Table 5 1 lists the performance requirements related to primary DC power in a Metrocell 411 2021 111 Standard 01 01 June 1996 Power and Grounding Requirements 5 3 Table 5 1 Metrocell DC Power performance requirements Description Requirements Maximum Nominal Minimum Module or unit level operating voltage range 29 00 Vdc 27 00 Vdc 21 00 Vdc Metro RF Frame current draw per feed A or B with all PAs 75 Adc transmitting at full RF output power Metro RF Frame power distribution voltage drop from the 0 65 Vdc feed input at the RIP to any module Metro RF Frame power distribution resistance from the 40 feed input at the RIP to any module MOhms Metro RF Frame operating voltage range measured at the 29 00 27 00 21 60 RIP power feed input Metro RF Frame minimum voltage to guarantee maximum 26 20 Vdc PA RF power is available measured at the RIP power feed input Power Plant normal operating Float
94. roduct allows a smooth transition from analog to digital technology It uses Time Division Multiple Access TDMA technology for digital systems and Advanced Mobile Phone Service AMPS technology for analog systems This evolutionary strategy enables service providers to gradually upgrade their cellular systems to digital while providing support of existing analog equipment The Nortel cellularsystem supporting dual mode service includesthe following components e DMS MTX switch containing the Intelligent Cellular Peripheral ICP unit at the mobile switching office e dual mode cell sites with the configurable DualMode Radio Units DRU on a Radio Frequency RF Frame and the Integrated Cellular Remote Module ICRM on a Common Equipment CE Frame at the cell site external and internal interface links The Nortel DualMode Metrocell serves as the intelligent interface between a Digital Multiplex Switch Mobile Telephone Exchange DMS MTX and its registered cellular mobiles It is a dual mode cell that works in both the analog AMPS mode and the digital TDMA mode The Metrocell is designed for high density small radius cells in areas where large traffic capacity is required It can exist independently or it can be added to existing cells for increased coverage The Metrocell provides a reduced power output for urban applications The typical power output of the Power Amplifier PA is 22 watts 43 5 dBm Figure 1 1 shows t
95. rt 8 DPA 9 Port1 Port 1 RF Frame 1 DPA 9 Port 2 RF Frame 1 Port 2 Mae m DPA 10 Port ATC Shef3 ATC3 Port 3 DPA 10 Port2 Port 4 DMS MTX DualMode Metrocell Cell Site Description 3 14 Cell Site Layouts Table 3 6 PA to ATC connection for a 120 Metrocell with 20 channels or less per RF frame for one sector continued From Through To DPA 1 Port1 CCH ATC1 Port 1 DPA 1 Port2 ATC1 Port 2 DPA 2 Port1 ATC1 Port 3 RF Frame 2 DPA 2 Port2 LCR RF Frame 2 ATC1 Port 4 TRUDFA Poni Aieronelt 1 5 Shelf 1 DPA 3 Port2 ATC1 Port 6 DPA 4 Port1 ATC1 Port 7 DPA 4 Port2 Port 8 DPA 5 Pori ATC2 Port 1 DPA 5 Port2 Port 2 RF Frame 2 Antenna DPA 6 Porti Port 3 Duplexer Main receive Position 2 for Sector Y RF Frame 2 DPA 6 Port2 Frame 2 ATC2 Port 4 TRU DPA DPA 7 Por ATC Shelf 2 Port 5 Shelf 2 DPA 7 Port 2 ATC2 Port 6 DPA 8 Port1 ATC2 Port 7 DPA 8 Port 2 ATC2 Port 8 DPA 9 Port1 ATC3 Port 1 RF Frame 2 DPA 9 Port 2 RF Frame 2 ATC3 Port 2 a Pie DPA 10 Porti Shelf3 ATC3 Port 3 e DPA 10 Port2 ATC3 Port 4 DPA 1 Port1 CCH ATC1
96. s 001 312 312 355 666 312 667 716 50 717 799 83 991 1023 33 411 2021 111 Standard 01 01 June 1996 Introduction 1 5 Table 1 1 Channel designation and frequency assignment System Channel Cell site receive Cell site transmit frequency MHz frequency MHz Not used 990 824 010 869 010 A 991 1023 824 040 825 000 869 040 870 000 A 1 333 825 030 834 990 870 030 879 990 334 666 835 020 844 980 880 020 889 980 667 716 845 010 846 480 890 010 891 480 717 799 846 510 848 970 891 510 893 970 The relationship between the channel number and the frequency 15 Channel number 1 N lt 799 Receiver frequency in MHz 0 03N 825 000 Transmit frequency in MHz 0 03N 870 000 Channel number 990 N lt 1023 Receiver frequency in MHz 0 03 N 1023 825 000 Transmit frequency in MHz 0 03 N 1023 870 000 Both non expanded and expanded spectrums are shown in Appendix B for the N 7 and N 4 frequency groups Important For ALL Metrocell cell site configurations the frequency plan used should have a minimum of 21 channel spacing 630 kHz between the RF channels DMS MTX DualMode Metrocell Cell Site Description 1 6 Introduction 411 2021 111 Standard 01 01 June 1996 2 1 Cell Site Configurations Overview The DualMode Metrocell can be configured in the follo
97. s required for the DRUM the ACU and the CSM2 Table 3 11 Component requirement for a 120 STSR Metrocell with three RF Frames No of TRUs No of TRUs No of ATCs No of No of ICRM No of antennas per Sector Duplexers TCM Port cards 3 to 20 9 to 60 9 3 6 3 TX RX 3 RX 21 to 24 63 to 72 9 6 6 6 TX RX Note An additional TCM port card is required for the DRUM the ACU and the CSM2 411 2021 111 Standard 01 01 June 1996 Cell Site Layouts 3 21 60 STSR cell site connection The Metrocell in a 60 STSR configuration uses at least three equipment frames one CE Frame and two RF frames see Figure 3 8 Each TRU DPA Shelf and its associated ATC on one of the two RF frames support one of the six sectors With only two RF frames the maximum number of Voice Channels VCH supported by each sector is six since two of the eight TRUs on the TRU shelf have to be assigned as the Control Channel CCH and the Locate Channel Receiver LCR A 60 STSR Metrocell with two RF Frames requires twelve antennas one TX RX antenna and one RX only antenna for each sector see Figure 3 10 As traffic grows two additional RF frames can be added to accommodate more VCHs per sector see Figure 3 9 A 60 STSR Metrocell with four RF Frames has 16 channels for one sector including the CCH and the LCR and each sector requires two TRU DPA shelves and two ATCs It also requires twelve antennas one TX RX antenna
98. t 4 Note Additional RF Frames with 20 channels or less are connected to their respective TX RX antennas in the same way as RF Frame 1 DMS MTX DualMode Metrocell Cell Site Description 3 6 Cell Site Layouts Table 3 2 RF Frame 1 PA to ATC connection for an omni Metrocell with 21 channels or more From Through To DPA 1 Port1 CCH ATC1 Port 1 DPA 1 Port2 ATC1 Port 2 DPA 2 Port1 ATC1 Port TRU DPA DPA 2 Port2 ATC Shelf 1 ATC1 Port 4 Shelf 1 DPA 3 Porti ATC1 Port 5 DPA 3 Port2 ATC1 Port 6 DPA 4 Port1 ATC1 Port 7 DPA 4 Port2 ATC1 Port 8 Duplexer Antenna DPA 5 Porti Port 1 Position 2 Main receive DPA 5 Port2 ATC2 Port 2 DPA 6 Port ATC2 Port 3 TRU DPA DPA 6 Port2 ATC Shelf 2 ATC2 Port 4 Shelf 2 DPA 7 Porti 2 Port 5 DPA 7 Port 2 ATC2 Port 6 DPA 8 Port ATC2 Port 7 DPA 8 Port 2 ATC2 Port 8 DPA 9 Port ATC3 Port 1 DPA 9 Port 2 ATC3 Port 2 DPA 10 Porti ATC3 Port 3 TRU DPA DPA 10 Port2 Shelf 3 Port 4 Duplexer Antenna Shelf 3 DPA 11 Porti 5 Position 3 Diversity DPA 11 Port 2 ATC3 Port 6 12 ATC3 Port 7 DPA 12 Port2 ATC3 Port 8 Note Additional RF Frames with 21 channels or m
99. ter 4 Diversity antenna Sector V rear sector RMC 5B B2 Splitter 5 Diversity antenna Sector X left adjacent sector RMC 1B B4 Splitter 6 Main antenna Sector Z primary sector RMC 3A A3 Splitter 1 Main antenna Sector U right adjacent sector RMC 4A A3 Splitter 2 Main antenna Sector W rear sector RMC 6A A1 RFFrame2 Splitter Diversity antenna Sector 2 primary sector B1 TRU shelf Splitter 4 Diversity antenna Sector W rear sector RMC 6B B3 Splitter 5 Sector Z Diversity antenna Sector Y left adjacent sector RMC 2B Splitter 6 Main antenna Sector Z primary sector RMC 3A A4 Splitter 1 Main antenna Sector U right adjacent sector RMC 4A A4 Splitter 2 Main antenna Sector W rear sector RMC 6A A2 RFFrame 1 Splitter Diversity antenna Sector Z primary sector RMC 2 shelf Splitter 4 Diversity antenna Sector W rear sector RMC 6B B4 Splitter 5 Diversity antenna Sector Y left adjacent sector RMC 2B B4 Splitter 6 Main antenna Sector U primary sector RMC 4A A5 Splitter 1 Main antenna Sector V right adjacent sector RMC 5A A3 Splitter 2 Main antenna Sector X rear sector 1 RFFrame3 Splitter Diversity antenna Sector U primary sector 4B RU shelf 1 Splitter 4 Diversity antenna Sector X rear sector RMC 1B B5 Splitter 5 Sector U Diversity antenna Sector Z
100. the LCR supplied on a different DC power feed and a TCM card No RF coaxial switch is required since the cavity of the LCR position on the ATC will tune to the CCH frequency when backup is required DMS MTX DualMode Metrocell Cell Site Description 3 22 Cell Site Layouts Figure 3 8 Frame layout of a 60 STSR Metrocell with two RF frames front view CE Frame RF Frame 1 RF Frame 2 CE RIP RF RIP Duplexer Duplexer Duplexer Duplexer Duplexer Duplexer Position 3 Position 2 Position 1 Position 3 Position 2 Position 1 DRUM actor Y lisa actor W Sector V 3 3 Sector Z Sector W gt 5 SI TRU DPA 5 5 DPA 5 TRU DPA AMC Secor Shef3 EEE Shelts ector DPA DPA 2 EJ DPA DPA 2 2 Sector Y 2 g Sector Z 2 2 Sector RMC 3 Sector 2 2 4 Sector U Sector V TRU DPA 5 5 TRU DPA RMC 6 Sector W Shelf 2 Shelf 2 Sector Y Sector V ICRM ATC 1 Sector X Sector U S 3pPA pPA 5 gt TRU DPA 5 515 TRU DPA EES sheti EIE Sheit 1 Blank Panel EET 5 e e DER IDEA g Sector X g g g g Sector U Base Base Figure 3 9 Typical frame layout of a 60 STSR Metrocell with four RF frames front view RF Frame 4 RF Frame 3
101. the use of RF channels on the same carrier frequency in different areas which are separated from one another by the greatest possible distance so that co channel interference is minimized DMS MTX DualMode Metrocell Cell Site Description 2 2 Cell Site Configurations Figure 2 1 shows the layout of an Omni N 7 frequency reuse plan The RF channels used in Cell 1 of a cluster are reused in Cell 1 of other clusters channels in Cell 2 are reused in Cell 2 of other clusters and so on Figure 2 1 Omni Nz7 frequency reuse plan 120 sectorized configuration In a 120 N27 sectorized configuration the 416 RF channels are divided among a cluster of seven cells Each cell contains a maximum of 59 or 60 RF channels with three Control channels for each cell Since each cell is further divided into three sectors each sector will contain a maximum of 19 or 20 RF channels with one Control channel for each sector The available RF channels are reused by other groups of cells within the system 411 2021 111 Standard 01 01 June 1996 Cell Site Configurations 2 3 Figure 2 2 shows the layout of a 120 N 7 sectorized frequency reuse plan The RF channels used in Cell 1 of a cluster are reused in Cell 1 of other clusters channels in Cell 2 are reused in Cell 2 of other clusters and so on This arrangement will have the RF channels using the same carrier frequency in different areas to be separated from one another by the greatest p
102. tion between the RMCs and the RF splitters in a 120 STSR Metrocell using three RF frames RMC to splitter connections for a 120 STSR Metrocell with one RF Frame Sector X From Through To Maeiantena SecorX RMC1A A1 Splitter1 Main antenna Sector Y RMC 2A A1 Splitter 2 Main antenna Sector Z RMC 3A A1 TRU shelf 1 Splitter 3 Diversity antenna Sector X RMC 1B B1 Splitter 4 Diversity antenna Sector Y RMC 2B B1 Splitter 5 Diversity antenna Sector Z RMC 3B B1 Splitter 6 DMS MTX DualMode Metrocell Cell Site Description 3 18 Cell Site Layouts Table 3 8 RMC to splitter connections for a 120 STSR Metrocell with one RF Frame From Through To Main antenna Sector X RMC 1A A2 Splitter 1 Main antenna Sector Y RMC 2A A2 Splitter 2 Sector Y Main antenna Sector Z RMC 2 TRU shelf 2 Splitter Diversity antenna Sector X RMC 1B B2 Splitter 4 Diversity antenna Sector Y RMC 2B B2 Splitter 5 Diversity antenna Sector Z RMC 3B B2 Splitter 6 Main antenna Sector X RMC 1A A3 Splitter 1 Main antenna Sector Y RMC 2A A3 Splitter 2 Sector Z Main antenna Sector Z RMC TRU shelf 3 Splitter Diversity antenna Sector X RMC 1B B3 Splitter 4 Diversity antenna Sector Y RMC 2B B3 Splitter 5 Diversity antenna Sector Z RMC 3B B3 Splitter 6 Table 3 9
103. uplexer ANT for Sector U L lt a abe Position 1 DPA 1 22 Tui A8 lt lt m ga B2 FG TRU DPA AIR 1 Shelfi B8 i 1 uo lt on SE From DPA 4 me 55 RMC 3B B2 co Control Channel f V or Sector a m z lt TX DPA 5 22 o jnx Duplexer ANT lt or z Position 2 2 1 ro TRU DPA 8 ATC2 gnato B8 j 1 en zu e E DPA 8 2 25 co EO Control Channe 1 for Sector W m z 2 Al al TX DPA 9 zs lt AS orx Duplexer ANT lt 25 DE Position 3 tro A8 EO 1 lt B1 TRUDPA lt B82 ATC3 1483 g tc Lo zin 1 lt t So or DPA 1 zt 22 Ta lt io EO CE Frame ICRM HSMO Antenna Sector U Main receive Antenna Sector U Diversity receive Antenna Sector V Main receive Antenna Sector V Diversity receive Antenna Sector W Main receive Antenna Sector W Diversity receive 411 2021 111 Standard 01 01 June 1996 Cell Site Layouts 3 25 Figure 3 11 Block diagram of a 60 STSR Metrocell with four RF Frames See Tables 3 13 for RE e 1 PA ATC connection ols See Table 3 15 for RMC TRU Shelf connection Control Channel for Sector X
104. ve device which is tuned to pass some frequencies and attenuate others Common filter types include high pass low pass band pass and notch filters Frequency Modulation A modulation technique that causes the frequency of the carrier to vary above and below its resting frequency the rate of which is determined by the frequency of the modulating signal and the deviation of which is determined by the magnitude of the modulating signal Forward path HSMO ICP ICRM Isolation LCR Loss The path from cell site to cellular subscriber High Stability Master Oscillator A unit that provides a highly stable 4 8 MHz reference for synchronizing the Transmit Receive Unit TRU Intelligent Cellular Peripheral A switch site peripheral that provides an interface between the cell site and the switch The ICP also oversees the operations of the cell site Integrated Cellular Remote Module A cell site peripheral that serves as an interface between the Intelligent Cellular Peripheral ICP and the radio transmission subsystems The ICRM is designed to support both analog and digital Radio Frequency RF equipment Intermodulation A type of interaction between signals in a nonlinear medium which produces phantom signals at sum and difference frequencies These phantom signals may interfere with reception of legitimate signals occupying the frequencies upon which they happen to fall The attenuation expressed in dB between any two sign
105. wing ways e Omni directional transmit receive e 120 Sectored Transmit Sectored Receive STSR e 60 Sectored Transmit Sectored Receive STSR The majority of systems may begin as Omni directional to minimize startup costs As the subscriber traffic increases the Omni configuration may reach its maximum traffic capacity At that time it will be necessary to provide additional capacity through expanded spectrum 120 degree sectorization 60 degree sectorization or frequency borrowing It is important that the operator selects a frequency plan before the Omni configuration is installed If not future expansions will be very difficult The most common frequency plans are e 7 Cell Cluster N 7 This frequency plan allows proper expansion from Omni to 120 degree sectorization see Figure 2 1 and Figure 2 2 e 4 or 12 Cell Cluster N24 or N 12 This frequency plan allows proper expansion from Omni to 60 degree sectorization see Figure 2 3 Both non expanded and expanded spectrums are shown in Appendix B for the N 7 and N 4 frequency groups Omni configuration In an Omni N 7 configuration the 416 RF channels are divided among a group of seven cells often known as a cluster Each cell consists of a maximum of 59 or 60 RF channels four cells with 59 channels and three cells with 60 channels where three of the 59 or 60 channels are Control channels The RF channels are reused by other cell clusters Frequency reuse refers to
106. y E receive TRU DPA aa Shelf 1 ut B8 t l Tui 22 1 1 1 co a lt CON DPA4 me Fe See Table 3 1 for Fi os DPA 5 mo rg lt or 1 22 co Fo f Notes 9 1 For diagram clarity only one RF Frame is shown Other RF Frames with 20 channels or less are connected and operated identically to that of RF Frame 1 on FO 2 TRU1 at TRU DPA Shelf 1 of RF Frame 1 is assigned as the and TRU4 at the same DPA8 gc shelf is assigned as the backup CCH pA N 7 1 T tc DPA 9 25 1 TRU DPA ATC3 shef3 l cs ug BE co ga DPA 10 52 E 1 Frame ICRM HSMO DMS MTX DualMode Metrocell Cell Site Description 3 4 Cell Site Layouts Figure 3 3 Block diagram of an omni Metrocell with 21 to 24 channels in one RF Frame RF Frame 1 Se

Nortel Networks Welding System 411-2021-111 User's Manual

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