Table of Contents
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User Manual
Airbridge cBTS3612 CDMA Base Station
1 System Overview .............................................................................................................. 1-1
1.1 Brief Introduction ....................................................................................................... 1-1
1.2 System Features ....................................................................................................... 1-3
1.2.1 Advanced Technology and Excellent Performance............................................ 1-3
1.2.2 Protecting User Investment .............................................................................. 1-4
1.2.3 Convenient Operation and Maintenance........................................................... 1-4
1.2.4 Flexible Networking Mode................................................................................ 1-5
1.2.5 Reliable Power Supply System ........................................................................ 1-5
1.2.6 Multi-band supported ....................................................................................... 1-6
1.3 Technical Index ......................................................................................................... 1-6
1.4 External Interface...................................................................................................... 1-9
1.4.1 Overview......................................................................................................... 1-9
1.4.2 Um Interface ................................................................................................. 1-10
1.4.3 Abis Interface ................................................................................................ 1-14
1.4.4 OML Interface ............................................................................................... 1-18
1.4.5 LMF Interface................................................................................................ 1-18
1.4.6 System Synchronization Interface.................................................................. 1-18
1.4.7 BTS Test Interface ........................................................................................ 1-18
1.4.8 Remote Maintenance Serial Port .................................................................... 1-19
1.4.9 Environment Alarm Interface.......................................................................... 1-19
1.5 Reliability Design .................................................................................................... 1-19
1.5.1 Hardware Reliability Design ........................................................................... 1-20
1.5.2 Software Reliability Measures ........................................................................ 1-23
2 Hardware Architecture ...................................................................................................... 2-1
2.1 Overview .................................................................................................................. 2-1
2.2 Baseband Subsystem................................................................................................ 2-5
2.2.1 Overview......................................................................................................... 2-5
2.2.2 Control & Clock Module (BCKM) ...................................................................... 2-7
2.2.3 Control Interface Module (BCIM).................................................................... 2-10
2.2.4 Channel Processing Module (BCPM) ............................................................. 2-12
2.2.5 Resource Distribution Module (BRDM) ........................................................... 2-14
2.2.6 Baseband Backplane Module (CBKM)............................................................ 2-17
2.2.7 E1 Surge Protector (BESP)............................................................................ 2-19
2.2.8 Fan Module (BFAN)....................................................................................... 2-20
2.3 RF Subsystem ........................................................................................................ 2-24
2.3.1 Overview....................................................................................................... 2-24
2.3.2 BTS Transceiver Module (BTRM)................................................................... 2-25
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System Description
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