Huawei Airbridge CBTS3612-800 User Manual page 16

User Manual
Airbridge cBTS3612-450 12-carrier CDMA Base Station
1)
The base station equipment in a faulty status makes the base station fail to be in
service.
2) The base station has not obtained correct configuration data, which leads to the
base station not being in service.
For the troubleshooting details, please refer to "4 Base Station Initialization Failure
Fault".
II. Abis signaling link fault
Abis signaling link fault will disable the network access of a mobile station.
1)
If any fault occurs to the Abis signaling link after a base station has been in
service, BSC cannot implement any logical configuration for the base station and
accordingly the mobile station cannot gain access to a network.
2)
If a base station has obtained its logic configuration, when any fault occurs to the
Abis signaling link, the base station will cut off the transmission signals of BTRM
corresponding to all sector carriers and this makes a mobile station unable to
gain access to a network.
At an OMC or near-end maintenance console of a base station, query the current
alarm of the base station to make sure whether there exists any "Abis signaling link
fault" alarm.
For the troubleshooting details, please refer to "5.2 Abis signaling link fault".
III. A cell has not obtained the logic configuration of BSC
1)
If a cell has no logical configuration, that is to say, such common channels as
pilot, synchronization, paging, etc. have not been established or overhead
messages not updated, the mobile station naturally cannot gain access to a
network.
View the confiuguration process report of a cell at the OMC maintenance console. If
the cell does not report the process of "Common channel successfully established"
and "Overhead message successfully updated", it shows that the cell has no logic
configuration.
2)
Unavailable physical equipment or operation & maintenanace (for example,
deletion of the equipment) results in the deletion of a logic cell, therefore the
mobile station cannot gain access to a network.
View the configuration process report of a cell at an OMC maintenance console. If the
cell reports the process report of "Cell deleted", it shows that the cell has been
deleted.
In addition, you may query whether a cell has its logic configuration via the "Cell
Status Query" command at the OMC maintenance console.
If a cell has not obtained its logic configuration, then check point by point:
Whether the BTRM used in this cell works normally.
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Whether the BCPM used in this cell works normally.
l
Whether the corresponding BRDM works normally.
l
Whether the optical fiber of BTRM and that of BRDM are correctly connected.
l
Whether BCIM works normally.
l
Whether the Abis signaling link is in connected status.
l
Whether BSC works normally.
l
Check the configuration parameters of BTS and BSC and make sure that they
l
are in accordance.
If any problem is found at some step, handle it according to the corresponding
chapter or section. For example, a BTRM module fault should be handled as
described in "6.5 BTS Transceiver Module (BTRM)".
03Q-0112-20020720-120
1 MS Unable to Access Network
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