A3127A: CELL_ASS_FAIL_MOC_NOT_INCLUDE_DR_TCHF
A3127C: CELL_ASS_FAIL_MTC_NOT_INCLUDE_DR_TCHF
A3127D: CELL_ASS_FAIL_ECALL_NOT_INCLUDE_DR_TCHF
A3127E: CELL_ASS_FAIL_CALL_REEST_NOT_INCLUDE_DR_TCHF
A3128A: CELL_ASS_FAIL_MOC_NOT_INCLUDE_DR_TCHH
A3128C: CELL_ASS_FAIL_MTC_NOT_INCLUDE_DR_TCHH
A3128D: CELL_ASS_FAIL_ECALL_NOT_INCLUDE_DR_TCHH
A3128E: CELL_ASS_FAIL_CALL_REEST_NOT_INCLUDE_DR_TCHH
A312Aa: CELL_A_ASS_FAIL_MOC_INCLUDE_DR
A312Ca: CELL_A_ASS_FAIL_MTC_INCLUDE_DR
A312Da: CELL_A_ASS_FAIL_ECALL_INCLUDE_DR
A312Ea: CELL_A_ASS_FAIL_CALL_REEST_INCLUDE_DR
A312S: CELL_ASS_FAIL_SIG
A3129I: CELL_ASS_FAIL_INVALID_STATE
A3129J: CELL_ASS_FAIL_INVALID_MSG_CONTENTS
A3129E: CELL_ASS_FAIL_NO_CIC
A3129F: CELL_ASS_FAIL_CIC_ALLOC
A3129G: CELL_ASS_FAIL_A_INTERF_FAIL
A3129H: CELL_ASS_FAIL_MSC_CLR_CMD
A312A: CELL_ASS_FAIL_Frst_ASS_NO_CH
A3129C: CELL_ASS_FAIL_Frst_ASS_EXP
A312K: CELL_ASS_FAIL_Frst_DR_NO_CH
A3129O: CELL_ASS_FAIL_Frst_DR_EXP
A3129B: CELL_ASS_FAIL_Frst_APPLY_TRSL_FAIL
A312L: CELL_ASS_FAIL_RECONN_SUCC_ASS_NO_CH
A3129D: CELL_ASS_FAIL_RECONN_SUCC_ASS_RECONN_SUCC
A3129P: CELL_ASS_FAIL_RECONN_SUCC_ASS_EXP
A312M: CELL_ASS_FAIL_RECONN_SUCC_DR_NO_CH
A3129R: CELL_ASS_FAIL_RECONN_SUCC_DR_RECONN_SUCC
A3129Q: CELL_ASS_FAIL_RECONN_SUCC_DR_EXP
A3129N: CELL_ASS_FAIL_RECONN_SUCC_APPLY_TRSL_FAIL
A312F: CELL_ASS_FAIL_NO_IDLE_ABIS
A3129S: CELL_ASS_FAIL_NO_SPEECH_VER
Upon receipt of an ASS REQ message, the BSC assigns a channel based on the channel type specified in the ASS REQ message and then sends a CHAN ACT message to the BTS. If the BSC receives a CHAN ACT ACK message from the BTS, the BSC considers that the channel is successfully activated. At the same time, the BSC connects the internal circuit based on the A interface CIC specified in the ASS REQ message. Then the BSC sends an ASS CMD message to the MS and waits for the MS to access the specified channel. The ASS CMD message carries the information on the ready channel, such as channel type, channel number, and frequency hopping information. The MS attempts to access the specified channel based on the channel number specified in the ASS CMD message. After successfully accessing the channel, the MS reports an ASS CMP message. Upon receipt of the ASS CMP message, the BSC sends an ASS CMP message to the MSC.
If the current cell does not have available channels and its directed retry switch is on, the BSC selects a proper adjacent cell based on the measurement report from the MS to trigger an outgoing internal inter-cell handover with the destination channel type being the traffic channel. If the handover is successful, the BSC sends an ASS CMP message to the MSC.
Suppose the MS already seizes a TCH for the signaling service in the immediate assignment procedure. When receiving an ASS REQ message, the BSC determines whether the channel mode specified in the ASS REQ message can be obtained from the channel that the MS currently seizes. If the channel mode specified in the ASS REQ message can be obtained from the channel that the MS currently seizes, the BSC enters the Mode Modify procedure and sends a MODE MODIFY message to the BTS to instruct the BTS to modify the channel mode. If the BSC receives a MODE MODIFY ACK message indicating that the BTS channel mode is successfully modified from the BTS, the BSC sends a CHAN MODE MODIFY message to the MS. After successfully modifying the channel mode, the MS reports a CHAN MODE MODIFY ACK message to the BSC. Upon receipt of the CHAN MODE MODIFY ACK message, the BSC sends an ASS CMP message to the MSC.
When receiving an ASS CMD or HO CMD message, the MS attempts to access the new channel. If the MS fails to access the new channel, the MS reconnects to the old channel. If the BSC receives an ASS FAIL or RR STATUS message from the MS, the BSC considers that the MS has successfully reconnected to the old channel and then decides whether to retry the air interface assignment procedure based on the data configuration. The maximum retry times are decided by the data configuration. The procedure that takes place at each retry is the same as the procedure described above. When the maximum retry times are reached, the MS reconnects to the old channel and the BSC sends an ASS FAIL message to the MSC.
The measurement counters are defined below.
This measurement counter indicates the number of failed assignments when the service type specified in the ASS REQ message indicates the signaling service. It provides the number of times that the BSC sends an ASS FAIL or CLEAR REQ message to the MSC, receives a CLEAR CMD message from the MSC, and locally releases the call when the service type specified in the ASS REQ message indicates the signaling service.
A3129I: CELL_ASS_FAIL_INVALID_STATE
The counter A3129I provides the number of ASS FAIL messages sent by the BSC to the MSC when the BSC receives an ASS REQ message that is not expected by the internal state machine of the BSC (for example, the state machine is in release status).
A3129J: CELL_ASS_FAIL_INVALID_MSG_CONTENTS
The counter A3129J provides the number of ASS FAIL messages sent by the BSC to the MSC when the BSC receives an ASS REQ message but the ASS REQ message fails to be decoded (for example, an error occurs during the decoding of an IE, such as CHANNEL TYPE, CIC, or Layer 3 header information).
A3129E: CELL_ASS_FAIL_NO_CIC
The counter A3129E provides the number of ASS FAIL messages sent by the BSC to the MSC when the BSC receives an ASS REQ message that carries an unavailable A interface CIC.
A3129F: CELL_ASS_FAIL_CIC_ALLOC
The counter A3129F provides the number of ASS FAIL messages sent by the BSC to the MSC when the BSC receives an ASS REQ message that carries an A interface CIC that is already occupied by another call.
A312A: CELL_ASS_FAIL_Frst_ASS_NO_CH
The counter A312A provides the number of ASS FAIL messages sent by the BSC to the MSC when the cell does not have available channels and the directed retry procedure fails to be initiated or the directed retry is prohibited by the data configuration in the first air interface assignment procedure.
A312L: CELL_ASS_FAIL_RECONN_SUCC_ASS_NO_CH
The counter A312L provides the number of ASS FAIL messages sent by the BSC to the MSC when the cell does not have available channels and the directed retry procedure fails to be initiated or the directed retry is prohibited by the data configuration in the air interface assignment procedure except for the first air interface assignment procedure.
A312K: CELL_ASS_FAIL_Frst_DR_NO_CH
The counter A312K provides the number of ASS FAIL messages sent by the BSC to the MSC when the cell does not have available channels and the directed retry procedure is successfully initiated but failed due to no available channel in the first air interface assignment procedure.
A312M: CELL_ASS_FAIL_RECONN_SUCC_DR_NO_CH
The counter A312M provides the number of ASS FAIL messages sent by the BSC to the MSC when the BSC attempts to make a directed retry but the directed retry failed because the target cell does not have available channels in the air interface assignment procedure except for the first air interface assignment procedure.
A312F: CELL_ASS_FAIL_NO_IDLE_ABIS
The counter A312F provides the number of ASS FAIL messages sent by the BSC to the MSC when the dynamic allocation of Abis resources is enabled on the BSC but the assignment fails due to no available Abis resources.
A3129S: CELL_ASS_FAIL_NO_SPEECH_VER
The counter A3129S provides the number of ASS FAIL messages sent by the BSC to the MSC when the assignment fails because the intersection between the speech version set carried in the ASS REQ message from the MSC and the speech version set supported by the current cell of the MS does not have available speech versions.
The following counters indicate the numbers of failed assignments due to abnormal air interface access.
A3129C: CELL_ASS_FAIL_Frst_ASS_EXP
The counter A3129C provides the number of ASS FAIL messages sent by the BSC to the MSC when the timer for the BSC to wait for an ASS CMP message expires after the BSC sends an ASS CMD message to the MS in the first air interface assignment procedure.
A3129P: CELL_ASS_FAIL_RECONN_SUCC_ASS_EXP
The counter A3129P provides the number of ASS FAIL messages sent by the BSC to the MSC when the timer for the BSC to wait for an ASS CMP message expires after the BSC sends an ASS CMD message to the MS in the air interface assignment procedure except for the first air interface assignment procedure.
A3129O: CELL_ASS_FAIL_Frst_DR_EXP
The counter A3129O provides the number of ASS FAIL messages sent by the BSC to the MSC when the cell does not have available channels and the directed retry procedure is successfully initiated but failed due to the expiry of the timer for waiting for an HO CMP message in the first air interface assignment procedure.
A3129Q: CELL_ASS_FAIL_RECONN_SUCC_DR_EXP
The counter A3129Q provides the number of ASS FAIL messages sent by the BSC to the MSC when the timer for waiting for an ASS CMP message expires after the BSC sends an HO CMD message to the MS in the air interface assignment procedure except for the first air interface assignment procedure.
A3129D: CELL_ASS_FAIL_RECONN_SUCC_ASS_RECONN_SUCC
The counter A3129D provides the number of ASS FAIL or RR STATUS messages reported by the MS to the BSC when the MS attempts but fails to access the new channel and then successfully reconnects to the old channel after receiving an ASS CMD message.
A3129R: CELL_ASS_FAIL_RECONN_SUCC_DR_RECONN_SUCC
The counter A3129R provides the number of HO FAIL or RR STATUS messages reported by the MS to the BSC when the MS attempts but fails to access the new channel and then successfully reconnects to the old channel after receiving an HO CMD message.
The following counters indicate the numbers of failed assignments due to the abnormality of terrestrial resources or the call clearing performed by the MSC.
A3129B: CELL_ASS_FAIL_Frst_APPLY_TRSL_FAIL
The counter A3129B provides the number of ASS FAIL messages sent by the BSC to the MSC when the MS drops from the connection to the air interface, or a circuit fails to be obtained for the call, or the obtained circuit is faulty during the circuit connection of the BSC in the first air interface assignment procedure.
A3129N: CELL_ASS_FAIL_RECONN_SUCC_APPLY_TRSL_FAIL
The counter A3129N provides the number of ASS FAIL messages sent by the BSC to the MSC when the MS drops from the connection to the air interface, or a circuit fails to be obtained for the call, or the obtained circuit is faulty during the circuit connection of the BSC in the air interface assignment procedure except for the first air interface assignment procedure.
A3129G: CELL_ASS_FAIL_A_INTERF_FAIL
The counter A3129G provides the number of times that the BSC locally releases the call when the BSC receives an SS7 link abnormality indication in the assignment procedure.
A3129H: CELL_ASS_FAIL_MSC_CLR_CMD
The counter A3129H provides the number of times that the BSC releases the call after receiving a CLEAR CMD message from the MSC in the assignment procedure.
Integer number or integer.
See the definitions of the measurement counters in the subsection "Description".
This is an original counter without involving any formula.