Modify Advanced Parameters of Cell Channel Management(MOD CELLCHMGAD)

Meaning:Index Type

Value range:BYNAME(By Name),BYIDX(By Index)

Explanation: Index Type.

Default value:None

Meaning:Cell Index

Value range:0~2047

Explanation: This parameter indicates the source cell index. The source cell index must be unique.

Default value:None

Meaning:Cell Name

Value range:1-32 characters

Explanation: This parameter indicates the name of the source cell. The name of each cell under one BSC must be unique.

Default value:None

Meaning:TCH Traffic Busy Threshold

Value range:0~100

Explanation:In Huawei II channel assignment algorithm, 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.

Default value:None

Meaning:Interf. Priority Allowed

Value range:NO(NO),YES(YES)

Explanation:This parameter specifies whether the interference priority is considered during channel assignment.

By default, this parameter is set to YES to select the channel with little interference.

Default value:None

Meaning:Active CH Interf. Meas.Allowed

Value range:NO(NO),YES(YES)

Explanation:This parameter specifies whether the channel interference is considered in channel assignment.

If this parameter is set to NO, the channel interference measurement is not performed and the interference indication is not sent. If this parameter is set to YES, the channel interference measurement is performed.

If this parameter is set to YES, the channel with little interference is selected preferentially.

Default value:None

Meaning:Allocation TRX Priority Allowed

Value range:NO(NO),YES(YES)

Explanation:This parameter specifies whether the TRX priority is considered during channel assignment.

If this parameter is set to YES, the TRX priority factor is effective. If this parameter is set to NO, the TRX priority factor is ineffective.

Usually, this parameter is set to YES to select the channel with a high TRX priority preferentially.

Default value:None

Meaning:History Record Priority Allowed

Value range:NO(NO),YES(YES)

Explanation:This parameter specifies whether the history record priority is considered in channel assignment.

If this parameter is set to YES, the history record priority is effective. If this parameter is set to NO, the history record priority is ineffective.

Usually this parameter is set to YES to select the channel with a high history record priority preferentially.

Default value:None

Meaning:Balance Traffic Allowed

Value range:NO(NO),YES(YES)

Explanation:If this parameter is set to YES, the start of the channel traverse is selected randomly. If this parameter is set to NO, the next channel of the assigned channel is selected as the start of the channel traverse.

Generally, this parameter is set to YES to ensure that the start point of the channel traversal is selected randomly and ensure the channel load sharing.

Default value:None

Meaning:Interf.of UL Level Threshold

Value range:0~63

Explanation:This parameter specifies one of the thresholds to determine whether the uplink interference is existed.

The higher the level, the greater the signal is. The greater the value, the lower the quality is.

If the uplink channel level is greater than or equal to the value of Interf of UL level Threshold and the quality grade of the uplink channel is greater or equal to the value Interf of UL Qual Threshold.this indicates the signal is good, but the quality is poor, that is, the uplink interference occurs.

The value range of Rank 0-63 corresponds to the range of -110 dBm to -47 dBm.

Default value:None

Meaning:Interf.of UL Qual. Threshold

Value range:0~70

Explanation:This parameter specifies one of the thresholds to determine whether the uplink interference is existed.

The higher the level, the greater the signal is. The greater the value, the lower the quality is.

If the uplink channel level is greater than or equal to the value of Interf of UL level Threshold and the quality grade of the uplink channel is greater or equal to the value Interf of UL Qual Threshold. The uplink interference occurs.

Default value:None

Meaning:Interf.of DL Level Threshold

Value range:0~63

Explanation:This parameter specifies one of the thresholds to determine whether the downlink interference is existed.

The higher the level, the greater the signal strength is. The greater the value, the lower the signal quality is.

If the downlink channel level is greater than or equal to the value of Interf of DL level Threshold and the quality grade of the uplink channel is greater or equal to the value Interf of DL Qual Threshold. The downlink interference occurs.

The value range of Rank 0-63 corresponds to the range of -110 dBm to -47 dBm.

Default value:None

Meaning:Interf.of DL Qual.Threshold

Value range:0~70

Explanation:This parameter specifies one of the thresholds to determine whether the downlink interference is existed.

The higher the level, the greater the signal strength is. The greater the value, the lower the signal quality is.

If the downlink channel level is greater than or equal to the value of Interf of DL level Threshold and the quality grade of the uplink channel is greater or equal to the value Interf of DL Qual Threshold. The downlink interference occurs.

Default value:None

Meaning:Filter Length for TCH Level

Value range:1~32

Explanation:This parameter specifies the number of successive measurement reports that are used to determine the signal strength on speech/data TCHs.

The signal strength on speech/data TCHs should not be determined based on only one measurement result. To eliminate the influence of accidental factors, you need to obtain the average value of signal strength in several successive measurement reports of TCHs, and then determine the signal strength on speech/data TCHs.

Default value:None

Meaning:Filter Length for TCH Qual.

Value range:1~32

Explanation:This parameter specifies the number of measurement reports that are used to clculate the signal quality on speech/data TCHs.

The signal quality on TCHs should not be determined based on only one measurement result. To eliminate the influence of accidental factors, you need to obtain the average value of signal quality in several successive measurement reports of TCHs, and then determine the signal quality on speech/data TCHs.

Default value:None

Meaning:Filter Length for SDCCH Level

Value range:1~32

Explanation:This parameter specifies the number of measurement reports that are used to determine the signal strength on signaling channels.

The signal strength on signaling channels should not be determined based on only one measurement result. To eliminate the influence of accidental factors, you need to obtain the average value of signal strength in several successive measurement reports of signaling channels, and then determine the signal strength on signaling channels.

Default value:None

Meaning:Filter Length for SDCCH Qual.

Value range:1~32

Explanation:This parameter specifies the number of measurement reports that are used to determine the signal quality on signaling channels.

The signal quality on signaling channels should not be determined based on only one measurement result. To eliminate the influence of accidental factors, you need to obtain the average value of signal quality in several successive measurement reports of signaling channels, and then determine the signal quality on signaling channels.

Default value:None

Meaning:Updata Period of CH Record[min]

Value range:1~1440

Explanation:When the Update Period of CH Record expires, the process of updating the history record of channel occupancy is started. That is, the history priority of each channel is reduced by Update Freq.of CH Record at the interval of the setting value of this parameter to increase the channel priority.

Principles of taking values are as follows:

Generally, a high-frequency adjustment is used. For example, the update period should be set in such a way that it ranges from half an hour to one hour because several busy hours are the major concerns during the actual operation in a day. If the parameter is set to a too small value, the result of the history record is meaningless. If the parameter is set to a too great value, the result cannot be seen in time during busy hours.

If a fixed interference source exists or an equipment fault occurs, the update period for the affected cells can be set in such a way that it ranges from several hours to one day.

This parameter is used together with Update Freq. of CH Record so that the channel can be assigned even if the history record priority decreases.

Default value:None

Meaning:Updata Freq.of CH Record

Value range:0~63

Explanation:The updating of the history record starts when the Update Period of CH Record times out. Update Freq of CH Record is subtracted from the history priority of each channel to improve the priority of the channel.

Principles of taking values are as follows:

Generally, set this parameter to 2.

If a fixed interference source exists or an equipment fault occurs, the update frequency for the affected cells can be set to 4 or 6.

The Update Period of CH Record is used together with Update Freq of CH Record, In this way, the channel can be assigned even if the channel priority is continuously lowered within a period of time.

Default value:None

Meaning:AMR TCH/H Prior Allowed

Value range:NO(NO),YES(YES)

Explanation:This parameter specifies whether the TCH/H is preferentially assigned on the basis of the channel type and current service channel seizure ratio that are allowed by the MSC.

During the channel assignment, the TCHF or TCCH, TCHH Prior channels are required in the following conditions: Half rate and full rate channels are allowed to be assigned by the MSC, the AMR TCH/H Prior Allowed is set to Yes, and the percentage of seized TCHs in the cell is greater than the value of AMR TCH/H Prior Cell Load Threshold. In other cases, the TCHF or TCCH, TCHF Prior channels are required.

Default value:None

Meaning:AMR TCH/H Prior Cell Load Threshold

Value range:0~99

Explanation:The channel type to be assigned is decided according to the channel types that are allowed by the MSC and the percentage of seized TCHs in the cell.

During the channel assignment, the TCHF or TCCH, TCHH Prior channels are required in the following conditions: Half rate and full rate channels are allowed to be assigned by the MSC, the AMR TCH/H Prior Allowed is set to Yes, and the percentage of seized TCHs in the cell is greater than the value of AMR TCH/H Prior Cell Load Threshold. In other cases, the TCHF or TCCH, TCHF Prior channels are required.

For details about cell load levels, refer to the Cell Load Threshold.

Relevant algorithm: AMR call channel assignment algorithms.

Default value:None

Meaning:TCH req suspend interval[s]

Value range:0~255

Explanation:This parameter specifies when the BSC fails to convert the dynamic PDCH back to the TCH, this operation is not performed during the period specified by this parameter. The parameter is valid for both built-in PCH and external PCU.

Default value:None

Meaning:Flex Abis Prior Choose Abis Load Thred[%]

Value range:0~100

Explanation:When the static Abis resource load is higher than Fix Abis Prior Choose Abis Load Thred(%) and the dynamic Abis resource load is higher than Flex Abis Prior Choose Abis Load Thred(%), the half-rate channel is preferred. Otherwise, the full-rate channel is preferred.

Default value:None

Meaning:Fix Abis Prior Choose Abis Load Thred[%]

Value range:0~100

Explanation:This parameter specifies the static Abis resource load threshold. When the static Abis resource load is lower than Fix Abis Prior Choose Abis Load Thred(%), the full-rate channel is preferentially assigned. Otherwise, the full-rate or half-rate channel is preferred according to the dynamic Abis resource load.

Default value:None

Meaning:Tch Traffic Busy Overlay Threshold

Value range:0~100

Explanation: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)*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.

Default value:None

Meaning:Tch Traffic Busy Underlay Threshold

Value range:0~100

Explanation: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)*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.

Default value:None

Meaning:load of Inner Cell or Out Cell for rate Selecting Allowed

Value range:NO(NO),YES(YES)

Explanation:This parameter specifies whether the BSC is allowed to assign the half-rate channels and full-rate channels to the MS according to the channel seizure ratio of the underlaid subcell and overlaid subcell.

Default value:None

Meaning:Threshold of the difference between uplink received levels

Value range:60~100

Explanation:This parameter is used for the multi-transceiver unit signal merge algorithm. The BSC monitors the situation that the high-level signal overwhelms the low-level signal per 0.5 seconds.

If the highest uplink signal strength of a timeslot - the lowest uplink signal strength of this timeslot > Threshold of the difference between uplink received levels, the situation must be recorded.

During the observation of N times, if this situation lasts P times, a forced handover is initiated on the calls with the highest uplink signal strength in the timeslot, and the calls should be handed over to another timeslot.

Where, N specifies the times of observing the uplink signal strength difference while P specifies the duration for uplink signal strength difference.

Default value:None

Meaning:Smooth factor of uplink received level

Value range:1~10

Explanation:The value is 0-1 in fact; however, the data in the host and BSC should be simultaneously multiplied by 10 times to prevent the floating-point values.

Default value:None

Meaning:Duration of uplink received level difference

Value range:1~16

Explanation:If the uplink received level difference of calls in the same timeslot exceeds the Threshold of the difference between uplink received levels, the situation must be recorded. During the observation of P seconds, if this situation lasts N seconds, the call with the lowest uplink signal strength in the timeslot should be handed over to another timeslot.

Default value:None

Meaning:Observed time of uplink received level difference

Value range:1~16

Explanation:If the uplink received level difference of calls in the same timeslot exceeds the Threshold of the difference between uplink received levels, the situation must be recorded. During the observation of P seconds, if this situation lasts N seconds, the call with the lowest uplink signal strength in the timeslot should be handed over to another timeslot.

Default value:None

Meaning:Multi-Density Trx Power Sharing

Value range:NONE(None),DYNAMIC(Dynamic Power Sharing)

Explanation:None.

Default value:None

Meaning:Down Power Inadequate Stat Time

Value range:1~16

Explanation:This parameter specifies the value of P in the P/N decision principle. If the downlink power is inadequate for N seconds in a period of P seconds,the handover triggered by inadequate downlink power is initiated.

Default value:None

Meaning:Down Power Inadequate Last Time

Value range:1~16

Explanation: This parameter specifies the value of N in the P/N decision principle. If the downlink power is inadequate for N seconds in a period of P seconds,the handover triggered by inadequate downlink power is initiated.

Default value:None

Meaning:Power Priority Allowed

Value range:NO(NO),YES(YES)

Explanation:This parameter specifies whether to enable the power-saving TRXs. If this parameter is set to Yes, the power-saving TRXs are preferentially enabled.

Default value:None

Meaning:Level Thresh. for Assigning BCCH Under TIGHT BCCH

Value range:0~63

Explanation:During channel assignment, if the TightBcch algorithm is enabled, the assignment of channels on the main-BCCH TRXs depends on the uplink receive level, quality, and non-main-BCCH load.

With TightBcch algorithm enabled, the TCHs are preferentially assigned on the main-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-main-BCCH load is higher than Intracell Non Main BCCH Load Threshold of TIGHT BCCH.

Default value:None

Meaning:Quality Thresh. for Assigning BCCH Under TIGHT BCCH

Value range:0~7

Explanation:During channel assignment, if the TightBcch algorithm is enabled, the assignment of channels on the main-BCCH TRXs depends on the uplink receive level, quality, and non-main-BCCH load.

With TightBcch algorithm enabled, the TCHs are preferentially assigned on the main-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-main-BCCH load is higher than Intracell Non Main BCCH Load Threshold of TIGHT BCCH.

Default value:None

Meaning:Channel Assignment Allowed for Insufficient Power

Value range:NO(NO),YES(YES)

Explanation:This parameter determines whether channels can be assigned on the multi-transceiver unit:

If the dynamic power sharing algorithm is enabled for assigning channels on the multi-transceiver unit and the remaining power of the multi-transceiver unit is less than that required for making a call, channel allocation is allowed when this switch is set to Yes; otherwise, channel allocation is not allowed.

Default value:None

Meaning:GSM900 Band Traffic Load Share Threshold

Value range:0~100

Explanation:This parameter specifies: for the channel assignment, suppose the MS supports multiple sub frequency bands of the 900 MHz frequency band. The BSC ignores the priority of P-GSM/E-GSM/R-GSM sub frequency bands if the cell load is smaller than and equal to this threshold. The BSC assigns channels on the TRXs with priority of R-GSM, E-GSM, P-GSM frequency bands if the cell load is greater than this threshold. That is, the BSC preferentially assigns channels on the R-GSM TRXs if the MS supports P-GSM/E-GSM/R-GSM sub frequency bands and the cell is configured with TRXs operating on the P-GSM/E-GSM/R-GSM sub frequency bands.

Default value:None

Meaning:Offset of the difference between uplink received levels

Value range:0~100

Explanation:This parameter specifies the offset of uplink signal strength difference during TCH assignment.

Default value:None

Meaning:Non-AMR User Allocate Loose Frequency Reuse Mode Trx Preference

Value range:NO(NO),YES(YES)

Explanation: This parameter specifies whether the non-AMR user is preferably allocated the TRX with loose frequency reuse.

Default value:None

Meaning:IBCA Allowed

Value range:NO(NO),YES(YES)

Explanation: This parameter specifies whether to enable the IBCA algorithm.

Default value:None

Meaning:IBCA Soft Block Switch

Value range:NO(NO),YES(YES)

Explanation: This parameter specifies whether to reject the call access when the results of evaluating all the available binary groups are unsatisfactory.

Default value:None

Meaning:IBCA FR/EFR Soft Block Threshold

Value range:0~23

Explanation: This parameter specifies the lowest CIR for the IBCA FR or EFR service. The CIR of the idle channel must be greater than this threshold. If the establishment of a new call causes that the CIR of the established call is lower than the threshold, the newly established call is soft blocked.

Default value:None

Meaning:IBCA HR Soft Block Threshold

Value range:0~23

Explanation: This parameter specifies the lowest CIR for the IBCA HR service. The CIR of the idle channel must be greater than this threshold. If the establishment of a new call causes that the CIR of the established call is lower than the threshold, the newly established call is soft blocked.

Default value:None

Meaning:IBCA AMR FR Soft Block Threshold

Value range:0~23

Explanation: This parameter specifies the lowest CIR for the IBCA AMR FR service. The CIR of the idle channel must be greater than this threshold. If the establishment of a new call causes that the CIR of the established call is lower than the threshold, the newly established call is soft blocked.

Default value:None

Meaning:IBCA AMR HR Soft Block Threshold

Value range:0~23

Explanation: This parameter specifies the lowest CIR for the IBCA AMR HR service. The CIR of the idle channel must be greater than this threshold. If the establishment of a new call causes that the CIR of the established call is lower than the threshold, the newly established call is soft blocked.

Default value:None

Meaning:IBCA Soft Block SAIC Offset

Value range:0~23

Explanation: This parameter specifies the lowest CIR of the MS that supports the SAIC. The value of this parameter is the step of reducing the soft blocking threshold of the SAIC MS.

Default value:None

Meaning:IBCA Max. Interference Source Num.

Value range:5~40

Explanation: This parameter specifies the number of calls with the strongest interference on the newly established call.

Default value:None

Meaning:IBCA Service Cell Pathloss

Value range:0~160

Explanation: The value of this parameter is used as the path loss from the MS to the serving cell if the path loss cannot be obtained from the measurement result.

Default value:None

Meaning:IBCA Pathloss Offset

Value range:0~50

Explanation: If the path loss from the MS to the neighbor cell cannot be obtained from the measurement result, you can estimate the value by adding the path loss from the MS to the serving cell to the path loss offset. It is recommended that you set the path loss offset of the level-1 neighbor cell of the serving cell to 15 dB, and set the path loss offset of the neighbor cell of level 2 or outside level 2 to 25 dB.

Default value:None

Meaning:IBCA Waiting Measurement Report Time[0.5s]

Value range:1~20

Explanation: This parameter specifies the time that a call requesting for the TCH needs to wait for the measurement report of the neighbor cell. The measurement report is used to calculate the path loss from the serving cell to the neighbor cell. This parameter is invalid when it is set to 0.

Default value:None

Meaning:IBCA Dynamic Measure Neighbor Cell Allowed

Value range:NO(NO),YES(YES)

Explanation: When this parameter is set to YES(YES), the neighbor cell whose parameter IBCA Dynamic Measure Neighbor Cell Flag is set to YES(YES) is dynamically measured.

Default value:None

Meaning:IBCA Call Information Filter

Value range:1~4

Explanation: This parameter is used to filters the collected path loss.

Default value:None

Meaning:IUO IBCA Allowed

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)

Explanation: In a concentric cell, this parameter specifies whether the IBCA algorithm is enabled in the underlaid subcell and the overlaid subcell. The value NO(Disabled in OL and UL Subcell) indicates that the IBCA algorithm is disabled in the overlaid subcell and the underlaid subcell; the value UNDER(Enabled in UL Subcell) indicates that the IBCA algorithm is enabled in only the underlaid subcell; the value INNER( Enabled in OL Subcell) indicates that the IBCA algorithm is enabled in only the overlaid subcell; the value YES(Enabled in OL and UL Subcell) indicates that the IBCA algorithm is enabled in the overlaid subcell and underlaid subcell.

Default value:None

Meaning:IBCA Downlink Path Loss Offset

Value range:0~63

Explanation: This parameter specifies the difference between the uplink path loss and the downlink path loss. The following formulas are applied: Downlink path loss = Uplink path loss + Downlink path loss compensation; Downlink path loss compensation = BTS combination loss + BTS double-antenna receive diversity gain (3 dB).

Default value:None

Meaning:IBCA IUO Path Loss Offset

Value range:0~63

Explanation: In a concentric cell, including the CoBCCH cell, you must consider the path loss difference between the overlaid subcell and the underlaid subcell when estimating the path loss of the channel in the overlaid subcell according to the path loss from the MS on the channel in the underlaid subcell to the serving cell or the neighbor cell.

The following formula is applied to calculate the value of this parameter: IBCA IUO Path Loss Offset = Combiner Insertion Loss Difference + Path Loss Difference of Different Antennas + Pass Loss Difference of Different Frequencies. To obtain the value of this parameter, you need to measure the levels in the overlaid subcell and underlaid subcell respectively on site. If different antennas are used in the overlaid subcell and the underlaid subcell, measure the levels at different sites.

Default value:None

Meaning:C/I Estimate Value

Value range:0~22

Explanation: This parameter specifies the estimated C/I ratio. It is used by the Huawei III power control algorithm to calculate the power of a call.

Default value:None

Meaning:IBCA Loose Trx SDCCH Load Threshold[%]

Value range:0~100

Explanation: When the load of an SDCCH on the TRX with loose reuse and whose frequency is on the compatible frequency bands of the main BCCH is lower than the threshold, the SDCCH is preferably allocated.

Default value:None

Meaning:IBCA Tight Trx SDCCH Rxlev Threshold[db]

Value range:0~63

Explanation: The load on the BCCH compatible loose reuse TRX is greater than the load specified by the IBCA Loose Trx SDCCH Load Threshold(%) parameter. In such a case, if the receive level of the uplink from the MS to the BTS exceeds the level specified by this parameter, the SDCCHs on the non-BCCH compatible TRX are preferentially allocated. Otherwise, the SDCCHs on the BCCH compatible loose reuse TRX are allocated.

Default value:None

Meaning:IBCA Wait SDCCH Idle Timer[s]

Value range:0~60

Explanation: This parameter specifies the length of the timer for the PDCH to preempt the MAIO of an idle SDCCH. When the PDCH needs to pre-empt the MAIO of the SDCCH, the timer is enabled. Before the timer expires, the SDCCH cannot be allocated to the newly established call. After the timer expires, the status of the SDCCH is checked. If the SDCCH is idle, the PDCH can pre-empt the MAIO of the SDCCH. Otherwise, the pre-emption is not allowed.

Default value:None

Meaning:IBCA ICDM Switch

Value range:NO(NO),YES(YES)

Explanation: This parameter specifies whether the ICDM algorithm is enabled in the current cell. The ICDM algorithm increases the accuracy in estimating the loss of the path to the IBCA neighboring cell and improves the efficiency of the IBCA algorithm.

Default value:None

Meaning:IBCA Path Lose Filter Factor

Value range:0~10

Explanation: This parameter reflects the impact of the history path loss on the calculation of the path loss in the ICDM algorithm. The impact of the history path loss decreases when the value of this parameter decreases. The impact of the history path loss increases when the value of this parameter increases.

Default value:None

Meaning:IBCA Pathloss Estimate of Non. Measurement Ncell

Value range:0~63

Explanation: This parameter is used to evaluate the unmeasured receive level of a neighboring cell.

Default value:None

Meaning:IBCA Non Measurement Ncell Stat. Num

Value range:0~16

Explanation: This parameter specifies the number of processed MRs during evaluation of the unmeasured receive level of a neighboring cell.

Default value:None

Meaning:IBCA MAIO Using Method

Value range:0(Max. Optimized MAIO),1(Randomization MAIO)

Explanation: This parameter specifies the way of choosing MAIO. If this parameter is set to "Max. Optimized MAIO", the optimal MAIO is chosen after the evaluation. If this parameter is set to "Randomization MAIO", MAIO is chosen randomly among the MAIOs that meet the requirement.

Default value:None

Meaning:IBCA MAIO Target C/I Threshold

Value range:0~63

Explanation: This parameter is used to determine whether an MAIO meets the requirement for establishing a call. When the C/I of an MAIO is greater than the threshold, the MAIO can be allocated to a call.

Default value:None

Meaning:IBCA Init. Power Control RexLevDL Offset

Value range:0~63

Explanation: This parameter specifies the offset of target receive level of the MS when the initial transmit power of the BTS is calculated by the IBCA algorithm.

Default value:None

Meaning:IBCA Init. Power Control RexLevUL Offset

Value range:0~63

Explanation: This parameter specifies the offset of target receive level of the BTS when the initial transmit power of the MS is calculated by the IBCA algorithm.

Default value:None

Meaning:IBCA Init. Power Control Rx Qual DL Offset

Value range:0~22

Explanation: This parameter specifies the offset of downlink target receive quality of the MS when the initial transmit power of the BTS is calculated by the IBCA algorithm.

Default value:None

Meaning:IBCA Init. Power Control Rx Qual UL Offset

Value range:0~22

Explanation: This parameter specifies the offset of uplink target receive quality of the BTS when the initial transmit power of the MS is calculated by the IBCA algorithm.

Default value:None

Meaning:Low Rxlev Overlaid Forbid Allocation Switch

Value range:OFF(OFF),ON(ON)

Explanation: In the concentric cell, this parameter specifies whether to allocate channels in the overlaid (OL) and underlaid (UL) subcells based on the receive level. When this parameter is set to ON(ON), the receive level is used to determine whether the channels in the OL subcell can be allocated. If the receive level is lower than the threshold, only the channels in the UL subcell can be allocated. If the receive level is higher than or equal to the threshold or this parameter is set to OFF(OFF), the original data configuration is read to determine how to allocate channels in the OL and UL subcells.

Default value:None

Meaning:Assign to Overlaid RxLev Offset[dB]

Value range:0~61

Explanation: During TCH allocation in the enhanced concentric cell, if "Low Rxlev Overlaid Forbid Allocation Switch" is set to "ON(ON)", the sum of this parameter and "OtoU HO Received Level Threshold" is used for determining whether the TCH in the OL subcell can be allocated. If the uplink receive level on the SDCCH is smaller than the sum, only the TCH in the UL subcell can be allocated; if the uplink receive on the SDCCH is greater than or equal to the sum, the original data configuration is read to determine how to allocate the TCHs in the UL and OL subcells.

During TCH allocation in the common concentric cell, if "Low Rxlev Overlaid Forbid Allocation Switch" is set to "ON(ON)", the sum of this parameter, "RX_LEV Threshold", and "RX_LEV Hysteresis" is used for determining whether the TCH in the OL subcell can be allocated. If the uplink receive level on the SDCCH is smaller than "RX_LEV Threshold"-"RX_LEV Hysteresis"+Assign to Overlaid RxLev Offset, only the TCH in the UL subcell can be allocated; if the uplink receive on the SDCCH is greater than or equal to "RX_LEV Threshold"-"RX_LEV Hysteresis"+Assign to Overlaid RxLev Offset, the original data configuration is read to determine how to allocate the TCHs in the UL and OL subcells.

Default value:None

Meaning:Handover to Underlaid RxLev Offset[dB]

Value range:0~61

Explanation: During TCH allocation in the intra-BSC incoming cell handover or the intra-cell handover in the enhanced concentric cell, if "Low Rxlev Overlaid Forbid Allocation Switch" is set to "ON(ON)", the sum of this parameter and "UtoO HO Received Level Threshold" is used for determining whether the TCH in the OL subcell can be allocated. If the downlink receive level on the TCH is smaller than the sum, only the TCH in the UL subcell can be allocated; if the downlink receive level on the TCH is greater than or equal to the sum, the original data configuration is read to determine how to allocate the TCHs in the UL and OL subcells.

During TCH allocation in the intra-BSC incoming cell handover or the intra-cell handover in the common concentric cell, if "Low Rxlev Overlaid Forbid Allocation Switch" is set to "ON(ON)", the sum of this parameter, "RX_LEV Threshold", and "RX_LEV Hysteresis" is used for determining whether the TCH in the OL subcell can be allocated. If the downlink receive level on the TCH is smaller than the sum, only the TCH in the UL subcell can be allocated; if the downlink receive on the TCH is greater than or equal to the sum, the original data configuration is read to determine how to allocate the TCHs in the UL and OL subcells.

Default value:None