Huawei RRU Hardware Maintenance Manual page 21

RRU
Hardware Maintenance Guide
Prerequisites


Procedure
Step 1 Optional: If a functional RRU is to be replaced, disable its maximum output power locking
for TX channels before storing it in the spare parts inventory.
1.



If...
The maximum output power locking is
enabled for TX channels
The maximum output power locking is
disabled for TX channels
Issue 16 (2015-03-23)
The test UE communicates with the base station properly.
The types of faulty RRUs are confirmed and the method of confirming is as follows:
− If RRUs can be queried online, log in to the LMT and run the MML command to
query the electronic labels of the RRUs. The types of RRUs to be replaced can be
determined according to the values of Type and Description in the command output.
− On the GSM side, run the DSP BTSELABEL command.
− On the UMTS side, if NodeB V100R013 or a later version is used, run the LST
BRDINFO command.
− On the UMTS side, if NodeB V200R012 is used, run the DSP BRDINFO command.
− On the UMTS side, if NodeB V200R013 or a later version is used, run the DSP
BRDMFRINFO command.
− On the LTE side, run the DSP BRDMFRINFO command.
If RRUs cannot be queried online, query the information about the RRUs offline on
−
the network management system (M2000/U2000).

If a faulty RRU is to be replaced, its maximum output power locking does not need to be disabled.
Then, go to Step 2.
 The following RRUs do not support maximum output power locking for TX channels: RRU3201,
RRU3203, RRU3222, RRU3004 (DC), RRU3004 (AC), RRU3008 (DC) V1, RRU3008 (AC) V1,
RRU3008 (DC) V2, RRU3008 (AC) V2, RRU3801E (DC), RRU3801E (AC), RRU3804 (DC),
RRU3804 (AC), RRU3805, RRU3806 (DC), RRU3806 (AC), RRU3808, RRU3908 (DC) V1,
RRU3908 (AC) V1, RRU3908 (DC) V2, RRU3908 (AC) V2, RRU3232, RRU3251, RRU3252(DC),
RRU3256(DC), RRU3252(AC), and RRU3253.
Check the maximum output power locking for TX channels of the new RRU.
On the UMTS or LTE side, log in to the LMT and run the DSP RRU command to query
the hardware maximum output power of the TX channels of the RRU.
On the GSM side, log in to the SMT. In the left pane of the Site Maintenance Terminal
System window, click Site. In the right pane of the window, double-click Lock RXU
Traffic Capability. In the displayed Lock RXU Traffic Capability window, click the
Query Config tab. On the displayed tab page, select the target RRU.
On the GSM side, log in to the LMT. Enter DSP BTSBRD in the Command Input text
box and click Assist. Set Information Type to RUNPARA, Index Type to BYID or
BYNAME, Board Type to RXU, RXU Board Index Type to an appropriate value, and
click Exec. In the command execution output, view the parameters Hardware
Maximum Output Power of the TX Channel and Maximum Output Power of the
TX Channel.
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Then...
Go to Step 1.2.
Go to Step 2.
4 Replacing an RRU
14