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BTS3900 Data Configuration This document is summarized from the 79 sites swapped last year, in the passed swap, we made much small mistake which induced the result that although the site could be up after cutover, but the performance was bad than before. Here I will sweep over the whole configuration procedure, and emphasize on the mistake we usually made before, pls everybody pay special attention to the points that are stressed here
1. Configuration Procedure Take the site T1833 as an example, S222/444, for reference only
1.1 Add site Pls choose “Active” here, while the “Cfg RFU by slot” can be ignored temporary
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1.2 Add cell 1.3 Configure site attribute PAY SPECIAL ATTENTION HERE. In 900M/1800M dual-frequency, two-cabinet, stack mode site, every pair of GRFUs in a cabinet is connected to one CPRI port on the BBU, and the two GRFUs in each pair are cascaded. The GRFUs in cabinet 1 are connected to CPRI ports 0, 2, and 4 on the BBU, and the GRFUs in cabinet 2 are connected to CPRI For detailed info, pls refer to the file <>
1.3.1 Add RXU chain Add 6 RXU chains in sequence
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1.3.2 Add RXU Refer to the corresponding relationship between cells and CPRI cable ports on BBU, the words highlight in red before. 900M cells/GRFU should be configured to SFP 0/2/4, 1800M cells/GRFUs should be configured to SFP 1/3/5, in cascade mode.
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1.3.3 Bond logical TRX TRXs should be even distributed to two boards, like 2+2 for 4-TRX cell and 3+3 for 6-TRX cell 1.3.4 Configure RXU attribute For dual-GRFU cell, every GRFU should be configured to “Single feeder (1TX+2RX)”; for single-GRFU cell, the GRFU here should be “Double feeder (1TX+2RX)”. Exception: some indoor sites with indoor antenna distribution system like PICO system, considering PICO offer two jumper cables to one GRFU, but only one TX and one RX, these sites should be configured to “Double feeder (1TX+1RX)” . T1703/T1722/T1043/T1086 are these sites
1.3.5 Configure chain Check how many E1 ports the original site has, add the ports if needed 1.3.6 Configure cell attribute All the small points in the picture below must be same as before, this heavily affects the performance if they are wrong.
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Channel type for all the channels should be correct and half rate switch should be open
Configure the same TRX No. as before, otherwise the TRX performance in M2000 will be inconsistent with before 2012-5-21
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In order to match the power between BTS3900 and BTS312, you need to configure the power here for each TRX, pls ask for help from Mr. Piers and Chen
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1.3.7 Configure site idle timeslots The number of site idle timeslots should be as same as before, meanwhile, one EDGE cell at least has 3 idle timeslots 1.3.8 Manually batch modify three parameters Call Control --- Random Access Error Threshold --- 255 Channel Management --- Multi-density TRX Power Sharing --- None Other Properties--- Support Half Rate Check the following parameters and their value Parameter Value RACH Min.Access Level(dbm) -109 RACH Busy Threshold 16 RXLEV_ACCESS_MIN 8 BS-PA-MFRAMS 2 Multiframe Period Use Imm_Ass Retransmit Yes Parameter STIRC Allowed Yes 1.3.9 Configure PTP BVC for every cell 1.3.10 Modify cfg mode Modify site attribute “Cfg RFU by slot” to be yes
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1.3.11 Manually synchronize the relative BSC6000 after swap 1.3.12 Write down power-off and power-on time and all work log, which is very important for performance and on which the network problem(s) will be detected based.
2. DEMU and FMU’s connection and configuration 1. DEMU DEMU monitoring signal cable should be connected to MON 1 and configured on slot 1
2. FMU and Fan Box The monitoring signal cable should be cascaded connected between 900M and 1800M cabinet fan boxes. The route is from MON 0 to 900M fan COM IN port, and from 900M fan COM OUT to 1800M fan COM IN. Correspondingly, 900M FMU should be configured on slot 8, while 1800M FMU is on slot 9 2012-5-21
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