PARAMETER_NAME MML_COMMAND DESCRIPTION

H373 Successful Outgoing intercell HOS H380 Incoming Intercell HO Request

2Quater Message Transmission ChannelSET GCELLCCUTRANSYS Whether to transmit the 2Quater message on the BCCH Norm channel or the BCCH Ext channel

User Plane DL Flow Ctrl SwitchSET GCELLPSOTHERPARA Whether to support PS downlink MAC back pressures in GSM. When the buffer is overflowed, the L2 transmission rate is limited if "User Plane DL Flow Ctrl Switch" is "ON". Thus, the data blocks are not lost. If "User Plane DL Flow Ctrl Switch" is "OFF", the L2 transmission rate is not limited. In this case, the loss of data blocks may occur. When "User Plane DL Flow Ctrl Switch" is set to "ON", the LDR needs to be disabled through the "SET LDR" command.

MSC Version Indication SET GCELLCCUTRANSYS Protocol version of the MSC that is connected to the BSC6900. The supported signaling varies with the protocol versions.

Encryption Algorithm SET GCELLBASICPARA Encryption algorithm supported by the BSS side

SD Quick HO SET GCELLSOFT Whether to enable the SDCCH quick handover test function. If this parameter is set to Yes, the BSC6900 initiates intra-cell SDCCH handover as soon as the MSC issues an encrypted command to the MS. Thus, the forwarding encrypted signaling can be transmitted and received on a new signaling channel. In this way, the network security is improved.

Access Control Class SET GCELLPRACH Access control class of the MS

Max Retransmissions for Radio Priority 1SET GCELLPRACH Maximum retransmission for radio priority 1. The 2bit Radio Priority message carried by the MS in the Packet Channel Request message has four levels of priorities. Level 1 is the highest priority, and level 4 is the lowest priority.

Max Retransmissions for Radio Priority 2SET GCELLPRACH Maximum retransmission for radio priority 2. The 2bit Radio Priority message carried by the MS in the Packet Channel Request message has four levels of priorities. Level 1 is the highest priority, and level 4 is the lowest priority.

Max Retransmissions for Radio Priority 3SET GCELLPRACH Maximum retransmission for radio priority 3. The 2bit Radio Priority message carried by the MS in the Packet Channel Request message has four levels of priorities. Level 1 is the highest priority, and level 4 is the lowest priority.

Max Retransmissions for Radio Priority 4SET GCELLPRACH Maximum retransmission for radio priority 4. The 2bit Radio Priority message carried by the MS in the Packet Channel Request message has four levels of priorities. Level 1 is the highest priority, and level 4 is the lowest priority.

Persistence Level 1 SET GCELLPRACH Persistence level 1 of the radio access priority.During MS access, the access priority of the MS is set. If the priority of the MS is higher than the access priority of the MS, the cell allows the access of the MS. Otherwise, the cell rejects the access of the MS. The value "no use" indicates this parameter is not used.

Persistence Level 2 SET GCELLPRACH Persistence level 2 of the radio access priority. During MS access, the access priority of the MS is set. If the priority of the MS is higher than the access priority of the MS, the cell allows the access of the MS. Otherwise, the cell rejects the access of the MS. The value "no use" indicates this parameter is not used.

Persistence Level 3 SET GCELLPRACH Persistence level 3 of the radio access priority. During MS access, the access priority of the MS is set. If the priority of the MS is higher than the access priority of the MS, the cell allows the access of the MS. Otherwise, the cell rejects the access of the MS. The value "no use" indicates this parameter is not used.

Persistence Level 4 SET GCELLPRACH Persistence level 4 of the radio access priority. During MS access, the access priority of the MS is set. If the priority of the MS is higher than the access priority of the MS, the cell allows the access of the MS. Otherwise, the cell rejects the access of the MS. The value "no use" indicates this parameter is not used.

S Value SET GCELLPRACH Minimum timeslots between two successive channel requests. After sending the access request, if the MS does not receive the response message after waiting for the minimum timeslots between two successive channel requests, the MS resends the access request.

TX_INT SET GCELLPRACH Extension transmission timeslots of random access. This parameter determines the interval of sending another channel request after the MS fails to request a channel.

Access Burst Type SET GCELLPSBASE Access pulse type of the PRACH, uplink PTCCH and packet control acknowledge message of the MS.8bit: 8 bit pulse access mode; 11bit: 11 bit pulse access mode.

PS Initial Access Service TypeSET GCELLPSOTHERPARA Whether the initial service is uplink, downlink or neutral

Max TA SET GCELLBASICPARA Maximum time advance TA. The value of this parameter is determined by that of "Cell Extension Type" in the "ADD GCELL" command.

Frequency Adjust SwitchSET GCELLOTHEXT Whether to enable the automatic frequency correction algorithm. This parameter is used for the fast-moving handover algorithm. If the parameter is set to YES, the BTS calculates the speed at which an MS leaves or approaches it, and sends the BSC6900 the calculated speed in an uplink measurement report.

Frequency Adjust ValueSET GCELLOTHEXT

Measure Link Delay SwitchSET GCELLBASICPARA Whether to measure the delay on the link between the BTSs that serve the calling MS and the called MS respectively

AMR Downlink Adaptive Threshold AllowedSET GCELLCCAMR Whether to enable the adaptive adjustment function of AMR downlink threshold. After this function is enabled, the BTS estimates the long-term voice quality indicated by the long-term FERframe erase ratio and compares the estimated result with the specified target voice quality. If the estimated result does not conform to the target voice quality, it indicates that the current AMR handover threshold may not be the best for the current radio conditions. In this case, the BSC6900 adjust threshold adaptively according to the relation between the estimated voice quality and the target voice quality.

AMR Uplink Adaptive Threshold AllowedSET GCELLCCAMR Whether to enable the adaptive adjustment function of AMR uplink threshold. After this function is enabled, the BTS estimates the long-term voice quality indicated by the long-term FERframe erase rate and compares the estimated result with the specified target voice quality. If the estimated result does not conform to the target voice quality, it indicates that the current AMR handover threshold may not be the best for the current radio conditions. In this case, the BSC uses the relevant algorithm to adjust the adaptive threshold according to the relation between the estimated voice quality and the target voice quality.

Downlink Long-term FER Lower ThresholdSET GCELLCCAMR Lower voice quality threshold associated with the automatic adjustment of the AMR downlink handover threshold. The value of this parameter must be smaller than or equal to the value of Downlink Long-term FER Target.

Downlink Long-term FER TargetSET GCELLCCAMR Target value of the voice quality automatically adjusted through the downlink threshold of AMR handover

Downlink Long-term FER Upper ThresholdSET GCELLCCAMR Upper voice quality threshold associated with the automatic adjustment of the AMR handover downlink threshold.

Downlink Threshold Adjust FactorSET GCELLCCAMR Factor of downlink threshold adjustment. It indicates the linear relation between the threshold adjustment value and the logarithmic FER.

Uplink Long-term FER Lower ThresholdSET GCELLCCAMR Lower voice quality threshold associated with the automatic adjustment of the AMR handover uplink threshold；The value of this parameter must be smaller than or equal to the value of Uplink Long-term FER Target.

Uplink Long-term FER TargetSET GCELLCCAMR Target voice quality value associated with the automatic adjustment of the uplink threshold of AMR handover Uplink Long-term FER Upper ThresholdSET GCELLCCAMR Upper voice quality threshold associated with the automatic adjustment of the AMR handover uplink threshold

Uplink Threshold Adjust FactorSET GCELLCCAMR Factor of uplink threshold adjustment. It indicates the linear relation between the threshold adjustment value and the logarithmic FER.

AMR Rate Control SwitchSET GCELLCCAMR Switch for controlling the AMR rate. Value 0 indicates that C/I is used to control the AMR rate. Value 1 indicates that BER is used to control the AMR rate.

Is Ratscch Function EnabledSET GCELLCCAMR This parameter specifies whether the RATSCCH function is enabled during the call establishment procedure.

AMR ACS[F] SET GCELLCCAMR Active coding set ACS[F], indicates a set of full-rate coding rates currently available for calls. The AMR is a set of multiple speech coding and decoding rates.

Auto Adjust UL TH and Hysteresis [F]SET GCELLCCAMR Whether to allow automatic adjustment for the uplink threshold and hysteresis of full rate AMR call rates

AMR DL Coding Rate adj.hyst1[F]SET GCELLCCAMR Adjustment hysteresis 1 of AMR downlink coding rate full rate. According to a certain algorithm and the radio quality indication RQI in the call measurement report, the MS and the BTS automatically adjust the current speech coding and decoding rate. The adjustment threshold of coding rate is the threshold of the RQI, which is the carrier-to-interference ratio of a call. The RQI value 1 means 0.5 dB, the RQI value 2 means 1 dB, and others can be deducted by analogy. There may be multiple coding rates in the active coding set ACS. Therefore, there is an adjustment threshold and an adjustment hysteresis between every two adjacent coding rates.

AMR DL Coding Rate adj.hyst2[F]SET GCELLCCAMR Adjustment hysteresis 2 of AMR downlink coding rate full rate. According to a certain algorithm and the radio quality indication RQI in the call measurement report, the MS and the BTS automatically adjust the current speech coding and decoding rate. The adjustment threshold of coding rate is the threshold of the RQI, which is the carrier-to-interference ratio of a call. The RQI value 1 means 0.5 dB, the RQI value 2 means 1 dB, and others can be deducted by analogy. There may be multiple coding rates in the active coding set ACS. Therefore, there is an adjustment threshold and an adjustment hysteresis between every two adjacent coding rates.

AMR DL Coding Rate adj.hyst3[F]SET GCELLCCAMR Adjustment hysteresis 3 of AMR downlink coding rate full rate. According to a certain algorithm and the radio quality indication RQI in the call measurement report, the MS and the BTS automatically adjust the current speech coding and decoding rate. The adjustment threshold of coding rate is the threshold of the RQI, which is the carrier-to-interference ratio of a call. The RQI value 1 means 0.5 dB, the RQI value 2 means 1 dB, and others can be deducted by analogy. There may be multiple coding rates in the active coding set ACS. Therefore, there is an adjustment threshold and an adjustment hysteresis between every two adjacent coding rates.

AMR DL Coding Rate adj.th1[F]SET GCELLCCAMR Adjustment threshold 1 of AMR downlink coding rate full rate. According to a certain algorithm and the RQI in the call measurement report, the MS and the BTS automatically adjust the current speech coding and decoding rate. The adjustment threshold of coding rate is the threshold of the RQI, which is the carrier-to-interference ratio of a call. The RQI value 1 means 0.5 dB, the RQI value 2 means 1 dB, and others can be deducted by analogy. There may be multiple coding rates in the ACS. Therefore, there is an adjustment threshold and an adjustment hysteresis between every two adjacent coding rates.

AMR DL Coding Rate adj.th2[F]SET GCELLCCAMR Adjustment threshold 2 of AMR downlink coding rate full rate. According to a certain algorithm and the RQI in the call measurement report, the MS and the BTS automatically adjust the current speech coding and decoding rate. The adjustment threshold of coding rate is the threshold of the RQI, which is the carrier-to-interference ratio of a call. The RQI value 1 means 0.5 dB, the RQI value 2 means 1 dB, and others can be deducted by analogy. There may be multiple coding rates in the ACS. Therefore, there is an adjustment threshold and an adjustment hysteresis between every two adjacent coding rates.

AMR DL Coding Rate adj.th3[F]SET GCELLCCAMR Adjustment threshold 3 of AMR downlink coding rate full rate. The adjustment thresholds and the hysteresis of coding rate must meet the following conditions: AMR Coding Rate adj.th n < AMR Coding Rate adj.th n + 1, n = 1 or 2; [AMR Coding Rate adj.th n + AMR Coding Rate adj.hyst n] < [AMR Coding Rate adj.th n + 1 + AMR Coding Rate adj.hyst n + 1], n = 1 or 2.

AMR Starting Mode[F] SET GCELLCCAMR Initial coding mode used for full rate AMR calls. The four values 0, 1, 2, and 3 of this parameter respectively represent the lowest, low, high, and highest coding rates in the ACS.

AMR UL Coding Rate adj.hyst1[F]SET GCELLCCAMR Based on the RQI in the call measurement report, the BTS and MS automatically adjust the current speech coding rate according to the related algorithm. The coding rate adjustment threshold is the threshold of RQI. The RQI indicates the carrier-to-interference ratio CIR of the call. If RQI equals 1, the CIR is 0.5 dB; if RQI equals 2, the CIR is 1 dB; and so forth. Since there are multiple coding rates in the ACS, there is an adjustment threshold and an adjustment hysteresis between the neighboring coding rates.

AMR UL Coding Rate adj.hyst2[F]SET GCELLCCAMR Based on the RQI in the call measurement report, the BTS and MS automatically adjust the current speech coding rate according to the related algorithm. The coding rate adjustment threshold is the threshold of RQI. The RQI indicates the carrier-to-interference ratio CIR of the call. If RQI equals 1, the CIR is 0.5 dB; if RQI equals 2, the CIR is 1 dB; and so forth. Since there are multiple coding rates in the ACS, there is an adjustment threshold and an adjustment hysteresis between the neighboring coding rates.

AMR UL Coding Rate adj.hyst3[F]SET GCELLCCAMR Based on the RQI in the call measurement report, the BTS and MS automatically adjust the current speech coding rate according to the related algorithm. The coding rate adjustment threshold is the threshold of RQI. The RQI indicates the carrier-to-interference ratio CIR of the call. If RQI equals 1, the CIR is 0.5 dB; if RQI equals 2, the CIR is 1 dB; and so forth. Since there are multiple coding rates in the ACS, there is an adjustment threshold and an adjustment hysteresis between the neighboring coding rates.

AMR UL Coding Rate adj.th1[F]SET GCELLCCAMR Based on the RQI in the call measurement report, the BTS and MS automatically adjust the current speech coding rate according to the related algorithm. The coding rate adjustment threshold is the threshold of RQI. The RQI indicates the carrier-to-interference ratio CIR of the call. If RQI equals 1, the CIR is 0.5 dB; if RQI equals 2, the CIR is 1 dB; and so forth. Since there are multiple coding rates in the ACS, there is an adjustment threshold and an adjustment hysteresis between the neighboring coding rates.

AMR UL Coding Rate adj.th2[F]SET GCELLCCAMR Based on the RQI in the call measurement report, the BTS and MS automatically adjust the current speech coding rate according to the related algorithm. The coding rate adjustment threshold is the threshold of RQI. The RQI indicates the carrier-to-interference ratio CIR of the call. If RQI equals 1, the CIR is 0.5 dB; if RQI equals 2, the CIR is 1 dB; and so forth. Since there are multiple coding rates in the ACS, there is an adjustment threshold and an adjustment hysteresis between the neighboring coding rates.

AMR UL Coding Rate adj.th3[F]SET GCELLCCAMR Based on the RQI in the call measurement report, the BTS and MS automatically adjust the current speech coding rate according to the related algorithm. The coding rate adjustment threshold is the threshold of RQI. The RQI indicates the carrier-to-interference ratio CIR of the call. If RQI equals 1, the CIR is 0.5 dB; if RQI equals 2, the CIR is 1 dB; and so forth. Since there are multiple coding rates in the ACS, there is an adjustment threshold and an adjustment hysteresis between the neighboring coding rates.

TFO Switch SET GCELLBASICPARA Whether to enable the Tandem Free Operation TFO function on the BTS through a CHANNEL ACTIVATION or MODE MODIFY message

AMR ACS[H] SET GCELLCCAMR Active coding set ACS[H], indicates set of half-rate coding rates currently available for calls. The AMR is a set of multiple speech coding and decoding rates.

Auto Adjust UL TH and Hysteresis [H]SET GCELLCCAMR Whether to allow automatic adjustment for the uplink threshold and hysteresis of half rate AMR call rates

AMR DL Coding Rate adj.hyst1[H]SET GCELLCCAMR Adjustment hysteresis 1 of AMR downlink coding rate half rate. According to a certain algorithm and the radio quality indication RQI in the call measurement report, the MS and the BTS automatically adjust the current speech coding and decoding rate. The adjustment threshold of coding rate is the threshold of the RQI, which is the carrier-to-interference ratio of a call. The RQI value 1 means 0.5 dB, the RQI value 2 means 1 dB, and others can be deducted by analogy. There may be multiple coding rates in the active coding set ACS. Therefore, there is an adjustment threshold and an adjustment hysteresis between every two adjacent coding rates.

AMR DL Coding Rate adj.hyst2[H]SET GCELLCCAMR Adjustment hysteresis 2 of AMR downlink coding rate half rate. According to a certain algorithm and the radio quality indication RQI in the call measurement report, the MS and the BTS automatically adjust the current speech coding and decoding rate. The adjustment threshold of coding rate is the threshold of the RQI, which is the carrier-to-interference ratio of a call. The RQI value 1 means 0.5 dB, the RQI value 2 means 1 dB, and others can be deducted by analogy. There may be multiple coding rates in the active coding set ACS. Therefore, there is an adjustment threshold and an adjustment hysteresis between every two adjacent coding rates.

AMR DL Coding Rate adj.hyst3[H]SET GCELLCCAMR Adjustment hysteresis 3 of AMR downlink coding rate half rate. According to a certain algorithm and the radio quality indication RQI in the call measurement report, the MS and the BTS automatically adjust the current speech coding and decoding rate. The adjustment threshold of coding rate is the threshold of the RQI, which is the carrier-to-interference ratio of a call. The RQI value 1 means 0.5 dB, the RQI value 2 means 1 dB, and others can be deducted by analogy. There may be multiple coding rates in the active coding set ACS. Therefore, there is an adjustment threshold and an adjustment hysteresis between every two adjacent coding rates.

AMR DL Coding Rate adj.th1[H]SET GCELLCCAMR Adjustment threshold 1 of AMR downlink coding rate half rate. According to a certain algorithm and the RQI in the call measurement report, the MS and the BTS automatically adjust the current speech coding and decoding rate. The adjustment threshold of coding rate is the threshold of the RQI, which is the carrier-to-interference ratio of a call. The RQI value 1 means 0.5 dB, the RQI value 2 means 1 dB, and others can be deducted by analogy. There may be multiple coding rates in the ACS. Therefore, there is an adjustment threshold and an adjustment hysteresis between every two adjacent coding rates.

In document 2G HUAWEI KPIS (Page 77-108)