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BTS3900
Hardware Description
Transmission
Mode
3.5 CPRI Port Configurations
This section describes the specifications and cable connections of the CPRI ports on boards and
modules.
3.5.1 CPRI Port Specifications
The base station configurations are affected by the number, transmission rate, and supported
topology of CPRI ports on the RFUs and BBU.
3.5.2 Configuration Principles for the CPRI Ports on the RFU in the GSM Only Base Station
When a base station works in GSM mode, the DRFUs/GRFUs in the slots of the cabinet are
connected to the CPRI ports on the GTMU.
3.5.3 Configuration Principles for the CPRI Ports on the RFU in the UMTS Only Base Station
When a base station works in UMTS mode, the WRFUs in the slots of the cabinet are connected
to the WBBPbs/WBBPds in the BBU.
3.5.4 Configuration Principles for the CPRI Ports on the RFU in the LTE Only Base Station
When a base station works in LTE only mode, the RFUs in the cabinet are the LRFUs.
3.5.5 Configuration Principles for the CPRI Ports on the RFU in the GSM+UMTS Base Station
When a base station works in GSM+UMTS mode, the RFUs in the cabinet are the MRFUs, and
the boards configured in the BBU are the GTMU, UBRI, WMPT, and WBBPb/WBBPd.
3.5.6 Configuration Principles for the CPRI Ports on the RFU in the GSM+LTE Base Station
When a base station works in GSM+LTE mode, the RFUs in the cabinet are the MRFUs, and
the boards configured in the BBU are the GTMU, UBRI, LMPT, and LBBP.
3.5.7 Configuration Principles for the CPRI Ports on the RFU in the UMTS+LTE Base Station
When a base station works in UMTS+LTE mode, the RFUs in the cabinet are the WRFUs and
LRFUs, and the boards configured in the BBU are the WMPT, WBBP, LMPT, and LBBP.
3.5.1 CPRI Port Specifications
The base station configurations are affected by the number, transmission rate, and supported
topology of CPRI ports on the RFUs and BBU.
Issue 04 (2011-02-15)
Board
UTRP9
NOTE
l The GTMU/GTMUb is mandatory for the GSM mode. When the channels of the E1/T1 signals are
more than four, the UTRPb4 must be configured for E1/T1 signal transmission.
l The WMPT is mandatory for the UMTS mode. When the channels of the E1/T1 signals are more than
four, the UTRP3 or UTRP4 must be configured for E1/T1 signal transmission. When the transmission
rate for the FE optical cable is higher than 100 Mbit/s, the UTRP2 must be configured. When the
transmission rate for the FE electrical cable is more than 100 Mbit/s, the UTRP9 must be configured.
l The transmission over FE/GE optical cable is recommended for the LMPT.
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
3 BTS3900 Hardware Configuration
GSM/UMTS
Port
Mode
UMTS
4
Port Capacity
10 Mbit/s, 100
Mbit/s, and
1000 Mbit/s
3-23
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