Set Advanced Channel Management Parameters of Cell

Set Advanced Channel Management Parameters of Cell(SET GCELLCHMGAD) Function Use this command to set the advanced channel management parameters of a cell. Note None Parameter Parameter ID

Parameter Name

IDTYPE

Index Type

Parameter Description

Meaning: Type of an index

GUI Value Range: BYNAME(By Name), BYID(By Index)

Actual Value Range: BYNAME, BYID

Unit: None

Default Value: None

Recommended Value: None

Parameter ID

Parameter Name

CELLID

Cell Index


Meaning: Index of a cell, uniquely identifying a cell in a BSC

GUI Value Range: 0~2047

Actual Value Range: 0~2047

Unit: None

Default Value: None

Recommended Value: None CELLNAME

Cell Name Meaning: Name of a cell, uniquely identifying a cell in a BSC

GUI Value Range: None

Actual Value Range: 1~64 characters

Parameter ID

Parameter Name


Unit: None

Default Value: None

Recommended Value: None TCHBUSYTHRES

TCH Traffic Busy Threshold Meaning: If the current channel seizure ratio reaches or exceeds this value, the half-rate TCH is assigned preferentially; otherwise, the full-rate TCH is assigned preferentially.



Unit: per cent

Default Value: None

Recommended Value: 60 INTERFPRIALLOW

Interf. Priority Allowed

Meaning: Whether to consider

Parameter ID

Parameter Name


interference priorities during channel assignment

GUI Value Range: NO(No), YES(Yes)

Actual Value Range: NO, YES

Unit: None

Default Value: None

Recommended Value: YES CHANINTERMESALLOW

Active CH Interf. Meas.Allowed

Meaning: Whether to measure the channel interference during channel assignment. If this parameter is set to NO, the BSC does not measure the channel interference or send an interference indication during channel assignment. If this parameter is set to YES, the BSC measures the channel interference during channel assignment.

GUI Value Range: NO(No),

Parameter ID

Parameter Name


YES(Yes)


Unit: None

Default Value: None

Recommended Value: YES TRXPRIALLOW

Allocation TRX Priority Allowed

Meaning: This parameter specifies whether the TRX priority is considered during channel assignment. When the parameter is set to YES, the smaller the parameter TRX Priority in the command SET GTRXDEV is, the higher priority the TRX is. Under other conditions, channels are preferentially allocated from high-priority TRXs.



Parameter ID

Parameter Name


Unit: None

Default Value: None

Recommended Value: YES HISPRIOALLOW

History Record Priority Meaning: Whether to consider Allowed history priority records during channel assignment. If this parameter is set to YES, the history priority records are considered. If this parameter is set to NO, the history priority records are not considered.



Unit: None

Default Value: None

Parameter ID

Parameter Name


Recommended Value: YES LOADSHAREALLOW

Balance Traffic Allowed Meaning: If this parameter is set to YES, the channel assignment algorithm II randomly selects the start range for channel traversal; otherwise, the algorithm selects the channel next to the channel assigned last time as the start point of channel traversal.



Unit: None

Default Value: None

Recommended Value: YES UPINTERLEVLIMIT

Interf.of UL Level Threshold

Meaning: One of the thresholds to determine whether the uplink interference exists. If the uplink level is not smaller than Interf.of UL Level Threshold

Parameter ID

Parameter Name


and the uplink quality of the channel is not less than Interf.of UL Qual. Threshold, the uplink interference exists.



Unit: dB

Default Value: None

Recommended Value: 30 UPINTERFQUALLIMIT

Interf.of UL Qual. Threshold

Meaning: One of the thresholds to determine whether the uplink interference exists. If the uplink level is not smaller than Interf.of UL Level Threshold and the uplink quality of the channel is not less than Interf.of UL Qual. Threshold, the uplink interference exists.


Parameter ID

Parameter Name



Unit: None

Default Value: None

Recommended Value: 40 DLINTERFLEVLIMIT

Interf.of DL Level Threshold

Meaning: Threshold for determining whether downlink interference exists. If the downlink level is equal to or greater than Interf.of DL Level Threshold and the downlink quality level is equal to or greater than Interf.of DL Qual.Threshold, downlink interference exists. The value range 0 to 63 is mapped to the range -110 dBm to -47 dBm.



Unit: dB

Parameter ID

Parameter Name


Default Value: None

Recommended Value: 35 DLINTERFQUALLIMIT

Interf.of DL Qual.Threshold Meaning: Threshold for determining whether downlink interference exists. If the downlink level is equal to or greater than Interf.of DL Level Threshold and the downlink quality level is equal to or greater than Interf.of DL Qual.Threshold, downlink interference exists.



Unit: None

Default Value: None

Recommended Value: 40 SSLENSD

Filter Length for TCH Level

Meaning: When the network

Parameter ID

Parameter Name


receives measurement reports, the measurement values in several straight measurement reports are filtered to reflect the radio operating environment for the sake of accuracy. This parameter specifies the number of successive measurement reports that are used to determine the signal strength on traffic/data channels.


Actual Value Range: TCH:480~15360, step:480; SDCCH:470~15040, step:470

Unit: ms

Default Value: None

Recommended Value: 6 QLENSD

Filter Length for TCH Qual.

Meaning: For the purpose of accurately reflecting the radio environment of a network, filtering is performed on the measured values in several consecutive measurement

Parameter ID

Parameter Name


reports. This parameter indicates the number of measurement reports used for the filtering of the signal quality on service or data channels. This parameter is used to determine whether interferences exist on channels.



Unit: ms

Default Value: None

Recommended Value: 6 SSLENSI

Filter Length for SDCCH Level

Meaning: When the network receives measurement reports, the measurement values in several straight measurement reports are filtered to reflect the radio operating environment for the sake of accuracy. The parameter specifies the number of successive measurement

Parameter ID

Parameter Name


reports that are used to determine the signal strength on signaling channel.



Unit: ms

Default Value: None

Recommended Value: 2 QLENSI

Filter Length for SDCCH Qual.

Meaning: For the purpose of accurately reflecting the radio environment of a network, filtering is performed on the measured values in several consecutive measurement reports. This parameter indicates the number of measurement reports used for the filtering of the signal quality on signaling channels. This parameter is used to determine whether interferences exist on

Parameter ID

Parameter Name


channels.



Unit: ms

Default Value: None

Recommended Value: 2 AMRTCHHPRIORALLOW

AMR TCH/H Prior Allowed

Meaning: Whether to enable the BSC to assign AMR half rate channels preferentially according to the channel types allowed by the MSC and the current TCH seizure ratio of the cell

GUI Value Range: OFF(Off), ON(On)

Parameter ID

Parameter Name


Actual Value Range: OFF, ON

Unit: None

Default Value: None

Recommended Value: ON AMRTCHHPRIORLOAD

AMR TCH/H Prior Cell Load Meaning: Load threshold for Threshold assigning half rate channels preferentially. If the current TCH seizure ratio of the cell is greater than this threshold, AMR half rate channels are assigned preferentially.



Unit: per cent

Default Value: None

Parameter ID

Parameter Name


Recommended Value: 55 TCHTRICBUSYOVERLAYTHR

Tch Traffic Busy Overlay Threshold

Meaning: The BSC assigns channels in the overlaid subcell to the MS in a concentric cell. If the channel seizure ratio of overlaid subcell is greater than the value of this parameter, half-rate channels are assigned. Otherwise, full-rate channels are assigned. Channel seizure ratio = (Num. of busy TCHF + Num. of busy TCHH/2)/(Num. of available TCHF + Num. of available TCHH /2) x 100%. This parameter is valid for the concentric cell. When the Allow Rate Selection Based on Overlaid/Underlaid Subcell Load is set to Yes, the TCH Traffic Busy Threshold (%) is invalid for the concentric cell.



Unit: per cent

Parameter ID

Parameter Name


Default Value: None

Recommended Value: 70 TCHTRIBUSYUNDERLAYTHR

Tch Traffic Busy Underlay Threshold

Meaning: Threshold for determining that the underlaid subcell is busy. The BSC assigns channels in the underlaid subcell to the MS in a concentric cell. When Allow Rate Selection Based on Overlaid/Underlaid Subcell Load is set to YES, half-rate channels are assigned if the channel seizure ratio in the underlaid subcell exceeds the value of this parameter, and full-rate channels are assigned if the channel seizure ratio in the underlaid subcell does not exceed the value of this parameter.



Unit: per cent

Parameter ID

Parameter Name


Default Value: None

Recommended Value: 60 HRIUOLDRATESELALLOW

Load of UL-OL Cells Rate Meaning: Whether to enable the Select Allowed BSC to assign half or full rate channels to MSs according to the channel seizure ratio in the overlaid and underlaid subcells



Unit: None

Default Value: None

Recommended Value: YES UPRXLEVSMOOTHPARA

Smooth Factor of Uplink Meaning: After the existing Received Level uplink receive level, uplink receive level after the previous optimization, and the value of this parameter are weight-

Parameter ID

Parameter Name


averaged, the uplink receive level after the optimization at this time is obtained and used for determing the difference between the uplink receive levels.


Actual Value Range: 0.1~1, step:0.1

Unit: None

Default Value: None

Recommended Value: 6 UPRXLEVLASTTIME

Duration of Uplink Meaning: If the difference Received Level between uplink receive levels Differ of calls within the same timeslot is greater than Offset of the difference between uplink received levels for P seconds among N seconds, the call with weak uplink receive level within the timeslot will be handed over to another timeslot. This parameter corresponds to

Parameter ID

Parameter Name


P in the P/N criterion.



Unit: s

Default Value: None

Recommended Value: 4 UPRXLEVSTATICTIME

Observe Time of UL RX Level Difference

Meaning: If the difference between uplink receive levels of calls within the same timeslot is greater than Offset of the difference between uplink received levels for P seconds among N seconds, the call with weak uplink receive level within the timeslot will be handed over to another timeslot. This parameter corresponds to N in the P/N criterion.


Parameter ID

Parameter Name



Unit: s

Default Value: None

Recommended Value: 5 QTRUPWRSHARE

Multi-Density TRX Power Sharing

Meaning: Whether to use the statistical multiplexing algorithm for multi-density power

GUI Value Range: NONE(None), DYNAMIC(Dynamic power sharing)

Actual Value Range: NONE, DYNAMIC

Unit: None

Default Value: None

Parameter ID

Parameter Name


Recommended Value: NONE MCPAOPTALG

MCPA Optimization Switch

Meaning: If the MCPA Optimization Switch is turned on, the MCPA priority update mode is adjusted.


Actual Value Range: ON, OFF

Unit: None

Default Value: None

Recommended Value: OFF QTRUDNPWRSTATTIME

Qtru Down Power Meaning: The P/N criteria is Inadequate Stat used to determine low downlink Time power for multi-density carriers. If the downlink power of a multi-density carrier remains low during a consecutive P seconds out of N seconds, the downlink power of the multi-density carrier is considered low. This parameter

Parameter ID

Parameter Name


corresponds to the N in the P/N criteria.



Unit: s

Default Value: None

Recommended Value: 5 QTRUDNPWRLASTTIME

Qtru Down Power Meaning: The P/N criteria is Inadequate Last used to determine low downlink Time power for multi-density carriers. If the downlink power of a multi-density carrier remains low during a consecutive P seconds out of N seconds, the downlink power of the multi-density carrier is considered low. This parameter corresponds to the P in the P/N criteria.


Parameter ID

Parameter Name



Unit: s

Default Value: None

Recommended Value: 3 PWRPRIORALLOW

Power Priority Allowed

Meaning: When this parameter is set to YES, The BSC preferentially uses the TRX with good power-saving performance according to the TRX power priority reported by the BTS. Smaller priority value indicates better power saving quality. If the priority is of a great value, the BTS closes TRXs late.



Unit: None

Parameter ID

Parameter Name


Default Value: None

Recommended Value: YES TIGHTBCCHASSMAINBCCHLEV

Level Thresh for Assign BCCH Under TBCCH

Meaning: During channel assignment, the assignment of channels on the BCCH TRXs depends on the uplink receive level, quality, and non-BCCH load. The TCHs are preferentially assigned on the BCCH TRXs if the following conditions are met: 1. The uplink receive level after filtering is higher than Level Thresh. for Assigning Main BCCH Carrier Channel Under TIGHT BCCH. 2. The uplink receive quality level after filtering is lower than Quality Thresh. for Assigning Main BCCH Carrier Channel Under TIGHT BCCH. 3. The non-BCCH load is higher than Intracell Non Main BCCH Load Threshold of TIGHT BCCH.


Parameter ID

Parameter Name



Unit: dB

Default Value: None

Recommended Value: 30 TIGHTBCCHASSMAINBCCHQUAL

Quality Thresh for Assign BCCH Under TBCCH

Meaning: During channel assignment, the assignment of channels on the BCCH TRXs depends on the uplink receive level, quality, and non-BCCH load. The TCHs are preferentially assigned on the BCCH TRXs if the following conditions are met: 1. The uplink receive level after filtering is higher than Level Thresh. for Assigning Main BCCH Carrier Channel Under TIGHT BCCH. 2. The uplink receive quality level after filtering is lower than Quality Thresh. for Assigning Main BCCH Carrier Channel Under TIGHT BCCH. 3. The non-BCCH load is higher than Intracell Non Main BCCH Load Threshold

Parameter ID

Parameter Name


of TIGHT BCCH.



Unit: None

Default Value: None

Recommended Value: 1 CHPWRINSUFFALLOWED

Channel Assign Allow for Meaning: Whether to allow a Insuff Power multi-density TRX board, that uses the dynamic power sharing algorithm to assign channels, to assign a channel to an MS when the remaining power on the multi-density TRX board is less than the power required by the MS. If this parameter is set to YES, a multi-density TRX board that uses the dynamic power sharing algorithm to assign channels cannot assign a channel to an MS when the remaining power on the multidensity TRX board is less than the power required by the MS.If this parameter is set to NO, a

Parameter ID

Parameter Name


multi-density TRX board that uses the dynamic power sharing algorithm to assign channels can assign a channel to an MS when the remaining power on the multi-density TRX board is less than the power required by the MS.



Unit: None

Default Value: None

Recommended Value: NO FREQLOADSHARETRAFFTHRSH

GSM900 Band Traffic Load Share Threshold

Meaning: Threshold for load sharing in the 900 MHz frequency band. Assume that an MS supports multiple subbands in the 900 MHz frequency band. If the cell load is equal to or less than this threshold, the BSC does not consider the priority levels of the P-GSM, E-GSM, and R-

Parameter ID

Parameter Name


GSM sub-bands during channel assignment. If the cell load is greater than this threshold, the BSC assigns channels according to the priority levels of the P-GSM, E-GSM, and RGSM sub-bands. That is, if the MS supports the P-GSM, EGSM, and R-GSM sub-bands and the cell is configured with the TRXs in the P-GSM, EGSM, and R-GSM sub-bands, the BSC assigns the channels in the TRXs of the R-GSM subband preferentially.



Unit: per cent

Default Value: None

Recommended Value: 25 NAMRLFRMTRXALLOWED

Assign NonAMR User Loose Fre. Reuse TRX

Meaning: Whether to preferentially allocate loose multiplexing frequencies to

Parameter ID

Parameter Name


non-AMR users



Unit: None

Default Value: None

Recommended Value: NO IBCAALLOWED

IBCA Allowed Meaning: Whether to enable the IBCA algorithm



Unit: None

Parameter ID

Parameter Name


Default Value: None

Recommended Value: NO IBCAUSRDYNCMEASURENCELL

IBCA User Dyn Measure Neighbor Cell

Meaning: Whether a single IBCA MS can dynamically measure the neighboring cells. When this parameter is set to YES, the neighboring cells where IBCA Dynamic Measure Neighbor Cell Flag is set to YES are dynamically measured. Dynamic measurement on neighboring cells is mutually exclusive to directed retry. When this parameter is set to YES, it is recommended that Direct Retry be set to NO.



Unit: None

Default Value: None

Parameter ID

Parameter Name


Recommended Value: NO IBCAUSEDIUOSUBLAY

IUO IBCA Allowed

Meaning: Whether to enable the IBCA algorithm for the overlay and underlay of an IUO cell

GUI Value Range: NO(Disabled in OL and UL subcell), UNDER(Enabled in UL subcell), INNER( Enabled in OL subcell), YES(Enabled in OL and UL subcell)

Actual Value Range: NO, UNDER, INNER, YES

Unit: None

Default Value: None

Recommended Value: UNDER IBCASOFTBLKSWITCH

IBCA Soft Block Switch

Meaning: Whether to deny the access of a call when none of the MAIO evaluation results meets the C/I ratio requirement of the call during channel

Parameter ID

Parameter Name


assignment



Unit: None

Default Value: None

Recommended Value: NO IBCAFRSOFTBLKTHRD

IBCA FR/EFR Soft Block Threshold

Meaning: Minimum C/I ratio that IBCA FR/EFR services allow. An idle channel can be assigned to such a service only when the C/I ratio of the idle channel is greater than this threshold. In addition, a new call associated with such a service can be established only when the call does not decrease the C/I ratio of the established calls to a value less than this threshold.

Parameter ID

Parameter Name




Unit: dB

Default Value: None

Recommended Value: 10 IBCAHRSOFTBLKTHRD

IBCA HR Soft Block Threshold

Meaning: Minimum C/I ratio that IBCA HR services allow. An idle channel can be assigned to such a service only when the C/I ratio of the idle channel is greater than this threshold. In addition, a new call associated with such a service can be established only when the call does not decrease the C/I ratio of the established calls to a value less than this threshold.



Parameter ID

Parameter Name


Unit: dB

Default Value: None

Recommended Value: 13 IBCAAFRSOFTBLKTHRD

IBCA AMR FR Soft Block Meaning: Minimum C/I ratio Threshold that IBCA AMR FR services allow. An idle channel can be assigned to such a service only when the C/I ratio of the idle channel is greater than this threshold. In addition, a new call associated with such a service can be established only when the call does not decrease the C/I ratio of the established calls to a value less than this threshold.



Unit: dB

Default Value: None

Parameter ID

Parameter Name


Recommended Value: 4 IBCAAHRSOFTBLKTHRD

IBCA AMR HR Soft Block Threshold

Meaning: Minimum C/I ratio that IBCA AMR HR services allow. An idle channel can be assigned to such a service only when the C/I ratio of the idle channel is greater than this threshold. In addition, a new call associated with such a service can be established only when the call does not decrease the C/I ratio of the established calls to a value less than this threshold.



Unit: dB

Default Value: None

Recommended Value: 10 IBCAWAFRSOFTBLKTHRD

IBCA WAMR FR Soft Block

Meaning: The lowest C/I ratio

Parameter ID

Parameter Name


Threshold that can be tolerated by IBCA WAMR FR. The C/I ratio of an idle channel must be larger than this parameter. Otherwise, it cannot be assigned. In addition, the system does not allow a newly-established call causing the C/I ratio of existing calls to be lower than this parameter.



Unit: dB

Default Value: None

Recommended Value: 5 IBCASOFTBLKSAICOFF

IBCA Soft Block SAIC Offset

Meaning: MSs that support SAIC can tolerate a lower carrier-to-interference ratio. This variable indicates the downward adjustment step of the soft blocking threshold of SAIC MSs.

Parameter ID

Parameter Name




Unit: dB

Default Value: None

Recommended Value: 1 IBCAMAXINTFSRCNUM

IBCA Max. Interference Source Num.

Meaning: The IBCA interference evaluation process only considers the interference of the strongest N existing calls on the newly-established call being evaluated. This parameter corresponds to the abovementioned N.



Unit: None

Parameter ID

Parameter Name


Default Value: None

Recommended Value: 20 IBCADLPATHLOSSOFF

IBCA Downlink Path Loss Offset

Meaning: Difference between uplink and downlink path losses, which is used to estimate the downlink path loss of a call when the downlink path loss cannot be computed directly according to a measurement report. This parameter is configured according to the combined loss and hierarchical dual-antenna gain (3 dB) of the BTS. IBCA Downlink Path Loss Offset = combined loss of BTS + hierarchical dual-antenna gain of BTS (3 dB)



Unit: dB

Default Value: None

Parameter ID

Parameter Name


Recommended Value: 7 IBCAIUOPATHLOSSOFF

IBCA IUO Path Loss Offset Meaning: In an IUO cell (or a CoBCCH cell), the path loss of an MS to the serving cell or a neighboring cell measured on the underlay is used together with this parameter to estimate the path loss on the overlay. IUO path loss compensation = Combiner insert loss difference + Path loss difference due to the use of different antennas + Path loss difference due to different frequency selectivity. This value is calculated based on the IUO level values measured by field engineers. When different antennas are used by the overlay and underlay, the level must be measured at multiple locations.



Unit: dB

Default Value: None

Parameter ID

Parameter Name


Recommended Value: 4 IBCASCELLPATHLOSS

IBCA Service Cell Pathloss

Meaning: Use this parameter when the path loss of an MS to serving cells cannot be measured based on the existing measurement results



Unit: dB

Default Value: None

Recommended Value: 110 IBCAPATHLOSSOFF

IBCA Pathloss Offset

Meaning: When the path loss of an MS to a neighboring cell cannot be measured based on the existing measurement results, it is estimated based on the path loss of the MS to the serving cell plus the IBCA path loss offset.

Parameter ID

Parameter Name




Unit: dB

Default Value: None

Recommended Value: It is recommended that you set the path loss offset of layer 1 neighboring cells of the serving cell to 15 dB and that of other neighboring cells to 25 dB. IBCACALLINFOFILTERLEN

IBCA Call Information Filter

Meaning: Number of measurement reports sampled for averaging path loss. A single measurement report may not reflect the actual network situations accurately. Therefore, the BSC needs to average the measured values in several successive measurement reports to reflect the radio environment.


Parameter ID

Parameter Name



Unit: ms

Default Value: None

Recommended Value: 4 LOOSESDCCHLOADTHRED

IBCA Loose Trx SDCCH Meaning: When the load of an Load Threshold SDCCH on the TRX that is in loose frequency reuse and is in the compatible band of the BCCH is lower than this threshold, the SDCCH is preferably allocated.



Unit: per cent

Default Value: None

Parameter ID

Parameter Name


Recommended Value: 80 TIGHTSDCCHRXLEVTHRED

IBCA Tight Trx SDCCH Rxlev Meaning: If the SDCCH load Threshold on the TRXs of the compatible BCCH in loose frequency reuse pattern is greater than the IBCA Loose Trx SDCCH Load Threshold, and when the uplink receive level from the MS to the BTS is greater than the threshold, the SDCCHs on the TRXs of the compatible non-BCCH are preferentially assigned. Otherwise, the SDCCHs on the TRXs of the compatible BCCH are preferentially assigned.



Unit: dB

Default Value: None

Recommended Value: 40

Parameter ID

Parameter Name

WAITSDCCHIDLETIMER

IBCA Wait SDCCH Idle Timer


Meaning: When the dynamic PDCH needs to use MAIO of the SDCCH, the SDCCH is not allowed to be assigned to new calls within the value of the parameter. After the timer expires, check whether the SDCCH is idle. If the SDCCH is idle, MAIO of the SDCCH is allowed to be preempted. If the channel is not idle, the MAIO is not allowed to be preempted.



Unit: s

Default Value: None

Recommended Value: 4 IBCAICDMSWITCH

IBCA ICDM Switch

Meaning: Whether to enable the ICDM algorithm for the cell. The ICDM algorithm helps to improve the precision in estimating the path loss of an IBCA neighbor cell and to increase the efficiency of the

Parameter ID

Parameter Name


IBCA algorithm.



Unit: None

Default Value: None

Recommended Value: YES IBCAPLFILTFACTOR

IBCA Path Lose Filter Factor

Meaning: Considers the influence of history path loss information during the calculation of the ICDM algorithm path loss. The smaller the filtering coefficient, the smaller the influence of history path loss; on the other hand, the larger the filtering coefficient, the larger the influence of history path loss.


Parameter ID

Parameter Name



Unit: None

Default Value: None

Recommended Value: 6 IBCANCELLPATHLOSSESTIMATE

IBCA Pathloss Est of Non. MR Meaning: Estimates the receive Ncell level of the unmeasured IBCA neighboring cells. When a consecutive IBCA Non Measurement Ncell Stat. Num measurement reports cover less than six neighboring cells (or the number of the reported neighboring cells is smaller than that of the actually configured neighboring cells), this parameter is used to estimate the receive level of the unmeasured IBCA neighboring cells. The estimated value is IBCA Pathloss Est of Non. MR Ncell. Otherwise, the signal strength of the unmeasured IBCA neighboring cells is the signal strength of the measured neighboring cells (including non-IBCA neighboring cells) subtracted by IBCA RxLev Offset.

Parameter ID

Parameter Name




Unit: dB

Default Value: None

Recommended Value: 0 IBCANONMEANCELLSTATNUM

IBCA Non Measurement Ncell Stat. Num

Meaning: Estimates the receive level of the unmeasured IBCA neighboring cells. When a consecutive IBCA Non Measurement Ncell Stat. Num measurement reports cover less than six neighboring cells (or the number of the reported neighboring cells is smaller than that of the actually configured neighboring cells), this parameter is used to estimate the receive level of the unmeasured IBCA neighboring cells. The estimated value is IBCA Pathloss Est of Non. MR Ncell. Otherwise, the signal strength of the unmeasured IBCA neighboring cells is the signal strength of the measured neighboring cells (including non-IBCA

Parameter ID

Parameter Name


neighboring cells) subtracted by IBCA RxLev Offset.



Unit: None

Default Value: None

Recommended Value: 4 IBCAMAIOUSMTD

IBCA MAIO Using Method

Meaning: Determines the MAIO selection method for each timeslot. The Optimal MAIO policy selects the optimal MAIO being evaluated, while the Random MAIO policy randomly selects a MAIO out of qualified MAIOs.

GUI Value Range: 0(Max. optimized MAIO), 1(Randomization MAIO)

Parameter ID

Parameter Name


Actual Value Range: 0, 1

Unit: None

Default Value: None

Recommended Value: 0 IBCATARGETCIRTHRSH

IBCA MAIO Target C/I Threshold

Meaning: Whether a MAIO meets the access requirement. When the C/I ratio of a MAIO is higher than this threshold, the MAIO can be assigned to the call being processed.



Unit: None

Default Value: None

Parameter ID

Parameter Name


Recommended Value: 20 IBCAINITPCRXLEVDLOFFSET

IBCA Init. Power Control RexLevDL Offset

Meaning: Adds a specified offset to the downlink target receive level when power control algorithm III is used to calculate the initial transmit power of a BTS in the IBCA function



Unit: dB

Default Value: None

Recommended Value: 0 IBCAINITPCRXLEVULOFFSET

IBCA Init. Power Control RexLevUL Offset

Meaning: Adds a specified offset to the uplink target receive level when power control algorithm III is used to calculate the initial transmit power of an MS in the IBCA function

Parameter ID

Parameter Name




Unit: dB

Default Value: None

Recommended Value: 0 IBCAINITPCRXQUALDLOFFSET

IBCA Init. Pwr Ctrl Rx Qual Meaning: Adds a specified DL Offset offset to the downlink target receive quality when power control algorithm III is used to calculate the initial transmit power of a BTS in the IBCA function



Unit: dB

Parameter ID

Parameter Name


Default Value: None

Recommended Value: 0 IBCAINITPCRXQUALULOFFSET

IBCA Init. Pwr Ctrl Rx Qual Meaning: Adds a specified UL Offset offset to the uplink target receive quality when power control algorithm III is used to calculate the initial transmit power of an MS in the IBCA function



Unit: dB

Default Value: None

Recommended Value: 0 LOWRXLEVOLFORBIDSWITCH

Allocate OL Channel Based on RX Level

Meaning: Whether to assign overlay channels in an IUO cell based on the receive level

Parameter ID

Parameter Name


conditions



Unit: None

Default Value: None

Recommended Value: You are advised to disable this function in the co-BCCH cell with the inter-site distance not more than 1500m. ASSOLRXLEVOFFSET

Assign to Overlayer RxLev Offset

Meaning: Offset relative to the level threshold for determining whether to assign a channel in the overlaid subcell



Parameter ID

Parameter Name


Unit: dB

Default Value: None

Recommended Value: 35 HOOLRXLEVOFFSET

Handover to Overlayer RxLev Offset

Meaning: If the cell is an enhanced concentric cell, this parameter with the current downlink received signal level and UtoO HO Received Level Threshold determines whether to assign a channel in the underlaid subcell to the intraBSC incoming handover to the concentric cell or intra-BSC inter-cell handover. If the cell is an ordinary concentric cell, this parameter with the current downlink received signal level, RX_LEV Threshold, and RX_LEV Hysteresis determines whether to assign a channel in the underlaid subcell to the intraBSC incoming handover to the concentric cell or intra-BSC inter-cell handover.


Parameter ID

Parameter Name



Unit: dB

Default Value: None

Recommended Value: 32 IBCASUBCHNHANDOVERALLOWED

IBCA SubChannel Handover Allowed

Meaning: Whether the handover of the calls on the single channels is allowed (single channels are the two half-rate sub-channels on a timeslot, in which only one is in the occupied state) when single channels are to be adjusted to a full-rate channel. When this parameter is set to ON, the handover of the calls on the single channels is allowed; if this parameter is set to OFF, the handover of the calls on the single channels is not allowed. This parameter is valid only when the IBCA algorithm is enabled and full rate is preferred for the newly established call.

GUI Value Range: OFF(Not Allowed), ON(Allowed)

Parameter ID

Parameter Name



Unit: None

Default Value: None

Recommended Value: OFF IBCAFORCEDBTSSYNCALLOWED

IBCA Forced BTS Synchronizatio n Allowed

Meaning: Whether the IBCA forced BTS synchronization is allowed. When this parameter is set to YES, the synchronization procedure is performed even though the BTSs are insynchronous. When this parameter is set to NO, the existing procedure, either the synchronization procedure or the out-of-synchronization procedure, is performed as required. Note that the synchronization status of the IBCA neighboring cells is determined by the internal software parameters of the IBCA neighboring cells, that is, if this parameter in IBCA neighboring cells is set to YES, the IBCA neighboring cells are considered to be always synchronous; otherwise, the IBCA neighboring cells are considered to be out of

Parameter ID

Parameter Name


synchronization.



Unit: None

Default Value: None

Recommended Value: OFF IBCAFLEXTSCALLOWED

IBCA Flexible TSC Allowed

Meaning: Whether the IBCA flexible TSC function is enabled. When this parameter is set to NO, the flexible TSC function is disabled and the configured TSC is used. When the BTS supports Flex TSC and this parameter is set to YES, the flexible TSC function is enabled.


Parameter ID

Parameter Name



Unit: None

Default Value: None

Recommended Value: OFF IBCAASSWAITMEASURERPTTIME

IBCA Assign Waiting Mr Time

Meaning: Length of the timer for a new call to wait for the measurement report (MR) on the signaling channel when dynamic measurement of the BA2 list is enabled during assignment. If this parameter is set to 0, dynamic measurement of the BA2 list is not enabled during assignment.


Actual Value Range: 0~10, Step: 0.5

Unit: s

Parameter ID

Parameter Name


Default Value: None

Recommended Value: 4 IBCANHOASSWAITMEASURERPTTIM E

IBCA Natural HO Waiting Mr Meaning: Length of the timer Time for a call to measure the path loss in the neighboring cell with strong interference of the target cell. The call to be handed over needs to measure the path loss before initiating the handover to the target cell when dynamic measurement of the BA2 list is enabled during the normal handover. When this parameter is set to 0, dynamic measurement of the BA2 list is not enabled in the normal handover, and the parameter "Wait Time for Valid MRs in IBCA HO" is invalid.



Unit: s

Parameter ID

Parameter Name


Default Value: None

Recommended Value: 5 IBCAEHOASSWAITMEASURERPTTIM E

IBCA Urgent HO Waiting Mr Meaning: Length of the timer Time for a call to measure the path loss in the neighboring cell with strong interference of the target cell. The call to be handed over needs to measure the path loss before initiating the handover to the target cell when dynamic measurement of the BA2 list is enabled during the emergency handover. When this parameter is set to 0, dynamic measurement of the BA2 list is not enabled in the emergency handover, and the parameter "Wait Time for Valid MRs in IBCA HO" is invalid.



Unit: s

Parameter ID

Parameter Name


Default Value: None

Recommended Value: 0 IBCAHOASSWAITMEASURERPTTIME

IBCA HO Waiting Effective Mr Time

Meaning: Length of the timer for a call to wait for other valid MRs after receiving the first valid MR of the target cell if dynamic measurement of the BA2 list is enabled during handover. When this parameter is set to 0, the call does not wait for other MRs after receiving the first MR of the target cell.



Unit: s

Default Value: None

Recommended Value: 2

Parameter ID

Parameter Name

CIRESTVALUE

C/I Estimate Value


Meaning: This parameter specifies the estimated carrierto-interference ratio of a new call. It is used for the Huawei power control algorithm III to calculate the power of the call.



Unit: dB

Default Value: None

Recommended Value: 22 IBCANEWCALLCIROFFSET

Target CIR Offset of IBCA Meaning: When the IBCA New Call algorithm is enabled, this parameter is used to calculate the target CIR of a new call. The formula is as follows: Target CIR of a new call = Target CIR in use + Target CIR Offset of IBCA New Call


Parameter ID

Parameter Name



Unit: dB

Default Value: None

Recommended Value: 7 IBCAOPRREVISEFACTOR

Corrected Factor of IBCA Meaning: When the IBCA Priority algorithm is enabled and the HSN is not 0, the IBCA priority and the SDCCH/PDCH priority are divided by this corrected factor respectively to reduce the weight of IBCA priority. In addition, the priority of the interference band is considered.



Unit: None

Parameter ID

Parameter Name


Default Value: None

Recommended Value: 0 IBCACALLTARGETCIROFFSET

Target CIR Offset of IBCA Meaning: When the IBCA Set-up Call algorithm is enabled, this parameter is used to calculate the target CIR of an existing call. The formula is as follows: Target CIR of an existing call = Target CIR in use + Target CIR Offset of IBCA Set-Up Call.



Unit: dB

Default Value: None

Recommended Value: 4 IBCACALLSOFTBLOCKTHOFFSET

IBCA Set-up Call Soft Block Meaning: When the IBCA Threshold algorithm is enabled, this Offset parameter is used to calculate

Parameter ID

Parameter Name


the actual soft blocking threshold of an existing call. The formula is as follows: Actual soft blocking threshold of an existing call = Configured soft blocking threshold of an existing call - IBCA Set-up Call Soft Block Threshold Offset.



Unit: dB

Default Value: None

Recommended Value: 0 IBCAICDMRELEVOFFSET

IBCA ICDM Initial Level Offset

Meaning: In the ICDM matrix algorithm, the signal strength (0-63) is divided into 10 levels. The signal strength that is smaller than or equal to the value of this parameter is at the initial level.

Parameter ID

Parameter Name




Unit: dB

Default Value: None

Recommended Value: 10 CELLOPPWRGRP

Cell Operator Power Group

Meaning: Power of each passage on the MRRU in the cell. When multiple operators are configured on an MRRU, the parameter specifies the power of each operator on the MRRU.

GUI Value Range: OP1(Operator 1), OP2(Operator 2), OP3(Operator 3), OP4(Operator 4), NONE(Not Shared)

Actual Value Range: OP1, OP2, OP3, OP4, NONE

Parameter ID

Parameter Name


Unit: None

Default Value: None

Recommended Value: 255 LOADSTATYPE

Type of Cell Load Calculation

Meaning: This parameter specifies whether the dynamic PDCHs that have been converted into the PDCHs are considered during the calculation of the current cell load.

GUI Value Range: NOTSTADYNPDCH(Not count dynamic PDCH), DYNPDCHASOCCUPY(Coun t dynamic PDCH(Occupy)), DYNPDCHASIDLE(Count dynamic PDCH(Idle))

Actual Value Range: NOTSTADYNPDCH, DYNPDCHASOCCUPY, DYNPDCHASIDLE

Unit: None

Parameter ID

Parameter Name


Default Value: None

Recommended Value: DYNPDCHASIDLE

Example To set the advanced channel management parameters of the cell (Index Type = BYID; Cell Index = 0; TCH Traffic Busy Threshold = 100), run the following command: SET GCELLCHMGAD: IDTYPE=BYID, CELLID=0, TCHBUSYTHRES=100;

Set Advanced Channel Management Parameters of Cell

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