Zte ZXG10 OB06, Technical Manual

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ZXG10 OB06 ZTE Integrated Outdoor GSM Base Station Technical Manual
68 Confidential and Proprietary Information of ZTE CORPORATION
Connection Failure
The procedure of connection failure is shown in Figure 59.
F
I G U R E
5 9 C
O N N E C T I O N
F
A I L U R E
MS LAPDm FURRM
HPIMan
LAPD
BSC OAMM
M PH_CHPIndToRR
(CHP CONN FAIL
IND)
(CONN FAIL IND)
DL_DATA _REQ (CONN FAIL IND)
The CONN FAIL IND message that is sent from the OB06 to the BSC
indicates the BSC that one activated channel cannot be used as more for
some reasons.
When this message is received, the network side will release the channel.
The message contains the cause parameter, including the following causes:
1. Radio link fault (Section 5 in GSM 05.08). The OB06 judges whether
there is any fault according to the uplink SACCH error rate or
RXLEV/RXQUAL test.
2. Hardware error (decoder fault, for example).
3. Others
The CHP module will report the error to the FURRM module. In addition, in
case of failed handov
er or mis-synchronization between CHP and TC, the
FURRM also sends this message to the BSC.
Error Report
The OB06 sends the ERROR REPORT message to the BSC, notifying the
following errors that cannot be reported with other procedures.
When the OB06 receives an error message, it ignores the message and
reports to the BSC. Here, the ERROR REPORT is the message involving all
error causes other than the CHAN ACTIV NACK for channel activation and
the MODE MODIFY NACK for channel mode modification.
The error causes include message ID error, message type error, message
sequence error, information unit error, and channel status mismatch.
O&M
The OB06 provides powerful O&M functions to implement management
and maintenance of the OB06 equipment. The functions fall into three
parts: parameter configuration, alarm and status reporting, and online
software loading.