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RF channels
RF CABEL
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Configuring RF Units
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Configuring RF Units This section describes how to configure data for TRX boards, and antenna boards.
Prerequisite • The BTS boards are configured. For details, see Configuring BTS Boards.
Context • 3X series and double-transceiver series base stations ◾ The DTRU board enables two logical TRXs to be bound to one physical TRX board. ◾ The QTRU board enables six logical TRXs to be bound to one physical TRX board. • 3900 series base stations ◾ The DRRU/DRFU board enables two logical TRXs to be bound to one physical TRX board. ◾ The MRRU/GRFU/MRFU/GRRU board enables eight logical TRXs to be bound to one physical TRX board.
Procedure 1. Add TRX boards to the base station. • 3X series and double-transceiver series base stations a. Run the ADD BTSTRXBRD command to add TRX boards to a base station of the 3X series or double-transceiver series. NOTE: ◾ In the case of the BTS3012, BTS3012II, and BTS3012AE, the DTRU or QTRU board can be configured if Separate Mode is set to SUPPORT(Support). • 3900 series base stations a. Run the ADD BTSRXUCHAIN command to add an RXU chain or ring. NOTE: There is no need to add RXU boards or a RXU chain/ring for the 3900B. b. Run the ADD BTSRXUBRD command to add RXU boards. NOTE: ◾ For the SingleRAN base stations, Cabinet No., Subrack No., and Subrack No. must be configured. ◾ For the 3900 series base stations, the DRRU/GRRU/MRRU/DRFU/GRFU/MRFU board can be configured. The DRRU/GRRU/MRRU board can be configured only for the DBS3900 GSM and DBS3036. The DRFU/GRFU/MRFU board can be configured only for the BTS3900 GSM/BTS3900A GSM and BTS3036/BTS3036A. ◾ If Is Configure Check threshold is set to NO(NO), run the ADD BTSBRDCAP command to set the bandwidth manually. ◾ For base stations to V1 specifications: Forward Bandwidth of the GRRU board cannot exceed 12.5 Mbit/s. Forward Bandwidth of the MRRU board in the 900/850/1900 MHz frequency band cannot exceed 12.5 Mbit/s. Forward Bandwidth of the MRRU board in the 1800 MHz frequency band cannot exceed 15 Mbit/s. ◾ For base stations to V2 specifications, Forward Bandwidth of the GRRU/MRRU board cannot exceed 20 Mbit/s. c. Run the SET BTSRXUBP command to set the sending receiving mode and working mode of the RXU board. NOTE: ◾ If a site is configured with a TMA, you need to set the related TMA switch parameters. ◾ The GRRU/GRFU board supports only the GSM(GSM) working mode. The MRRU/MRFU board supports the GSM(GSM), UMTS (UMTS), and GSM_AND_UMTS(GSM AND UMTS) working modes. d. Optional: If the working mode of the MRRU/MRFU is set to GSM_AND_UMTS(GSM AND UMTS), run the ADD BTSTOPCONFIG command to configure the TDM over Packet (TOP) switching relation of the MRRU/MRFU board. This facilitates common E1/T1 transmission between GSM and UMTS. 2. Optional: If power sharing needs to be configured for the base station, run the SET GCELLCHMGAD command to set the advanced channel management parameters of the cell. In this step, set Multi-Density TRX Power Sharing to DYNAMIC(Dynamic power sharing). 3. Optional: Run the ADD BTSANTFEEDERBRD command to add antenna boards to the base station. NOTE: The 3900 series base stations do not need to be configured with antenna boards. Parent topic: Configuring the Equipment Data Previous topic: Configuring BTS Boards
