fdd parameter audit - 20131201
DESCRIPTION
FDD parameter AuditTRANSCRIPT
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Network OperationsEastern Region Network Optimization
Date : 1ST Dec, 2013
FDD Parameter AuditSTC MS Project – Eastern Region
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SUMMARY
1. Drop Call2. Access3. Paging4. Intra-RAT5. Inter-RAT6. Service Throughput7. Common Parameter
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1.Drop Call
1. T3102. T3113. N3114. N3105. S1MessageWaitingTimer6. X2MessageWaitingTimer7. UeInactiveTimer
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1.1 Drop Call - T310
Version Parameter Value No Of Cells
Eran 3.0 MS1000_T310 822Eran 2.1 MS200_T310 6Eran 2.1 MS1000_T310 510
Value Range: MS0_T310(0ms), MS50_T310(50ms), MS100_T310(100ms), MS200_T310(200ms), MS500_T310(500ms), MS1000_T310(1000ms), MS2000_T310(2000ms)
Default Value = MS1000_T310 (1000ms) Eran 3.0Default Value = MS200_T310 (200ms) Eran 2.1
Meaning: Indicates the length of timer 310. For details, see 3GPP TS 36.331.
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1.2 Drop Call - T311
Version Parameter Value No Of Cells
Eran 3.0 MS10000_T311 822Eran 2.1 MS10000_T311 516
Value Range: MS1000_T311(1000ms), MS3000_T311(3000ms), MS5000_T311(5000ms), MS10000_T311(10000ms), MS15000_T311(15000ms), MS20000_T311(20000ms), MS30000_T311(30000ms)
Default Value = MS10000_T311 (10000ms)
Meaning: Indicates the length of timer 311. For details, see 3GPP TS 36.331.
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1.3 Drop Call – N311
Version Parameter Value No Of Cells
Eran 3.0 n1 822Eran 2.1 n1 510Eran 2.1 n5 6
Value Range: n1(1), n2(2), n3(3), n4(4), n5(5), n6(6), n8(8), n10(10)
Default Value = n1 Eran 3.0Default Value = n5 Eran 2.1
Meaning: Indicates the length of timer 311. For details, see 3GPP TS 36.331.
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1.4 Drop Call – N310
Version Parameter Value No Of Cells
Eran 3.0 n10 822Eran 2.1 n6 6Eran 2.1 n10 510
Value Range: n1(1), n2(2), n3(3), n4(4), n6(6), n8(8), n10(10), n20(20)
Default Value = n10 Eran 3.0Default Value = n6 Eran 2.1
Meaning: Indicates the maximum number of successive "out of sync" indications received from L1.
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1.5 Drop Call – S1MessageWaitingTimer
Version Parameter Value No Of eNodeBs
Eran 3.0 20 274
Eran 2.1 Eran 2.1 do not have this para
Value Range: 10~200
Default Value = 20
Meaning: Indicates the timer governing the period the eNodeB will wait for a response message from the MME.
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1.6 Drop Call – X2MessageWaitingTimer
Version Parameter Value No Of eNodeBs
Eran 3.0 20 274
Eran 2.1 Eran 2.1 do not have this para
Value Range: 10~200
Default Value = 20
Meaning: Indicates the timer governing the period the eNodeB will wait for a response message from the MME.
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1.7 Drop Call – UeInactiveTimer
Version Parameter Value No Of eNodeBs
Eran 3.0 20 274Eran 2.1 1800 1Eran 2.1 10 171
Value Range: 0~3600
Default Value = 20 Eran 3.0Default Value = 1800 Eran 2.1
Meaning: Indicates the length of the UE inactivity timer. The eNodeB monitors whether UEs are receiving or sending data. When a UE has neither received nor sent data for a duration exceeding this period of time, the eNodeB releases the radio resources for the UE. If this parameter is set to 0, the UE inactivity timer is not used.
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2.Access
1. T3002. CellRadius3. CellBarred4. InitPdcchSymNum5. UuMsgSimulSendSwitch
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2.1 Access – T300
Version Parameter Value No Of Cells
Eran 3.0 MS200_T300 822Eran 2.1 MS200_T300 516
Value Range: MS100_T300(100ms), MS200_T300(200ms), MS300_T300(300ms), MS400_T300(400ms), MS600_T300(600ms), MS1000_T300(1000ms), MS1500_T300(1500ms), MS2000_T300(2000ms)
Default Value = MS200_T300
Meaning: Indicates the timer value of Timer 300. For details, see 3GPP TS 36.331.
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2.2 Access – CellBarred
Version Parameter Value No Of Cells
Eran 3.0 CELL_NOT_BARRED 822Eran 2.1 CELL_NOT_BARRED 516
Value Range: CELL_BARRED(Barred), CELL_NOT_BARRED(Not Barred)
Default Value = CELL_NOT_BARRED
Meaning: Indicates the radius of the cell.
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2.3 Access – CellRadius
Version Parameter Value No Of Cells
Eran 3.0 4000 567Eran 3.0 10000 255Eran 2.1 4000 414Eran 2.1 10000 102
Value Range: 1~100000
Default Value = 10000 (m)
Meaning: Indicates the radius of the cell.
We opt this parameter for good access, some site changed to 10000 meters.
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2.4 Access – InitPdcchSymNum
Version Parameter Value No Of Cells
Eran 3.0 1 798Eran 3.0 3 24Eran 2.1 3 516
Value Range: 1~4
Default Value = 3
Meaning: Indicates the number of OFDM symbols initially occupied by the PDCCH.
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2.5 Access – UuMsgSimulSendSwitch
Version Parameter Value No Of eNodeBs
Eran 3.0 OFF 120Eran 3.0 ON 154
Eran 2.1 Eran 2.1 do not have this para
Value Range: OFF(Off), ON(On)
Default Value = ON
Meaning: Indicates whether an eNodeB uses serial or parallel message transmission mode during security mode activation and RRC reconfiguration procedures. If this parameter is set to ON, the eNodeB uses parallel transmission mode. If this parameter is set to OFF, the eNodeB uses serial transmission mode.
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3.Paging
1. ModifyPeriodCoeff2. PchPwr3. DefaultPagingCycle4. Nb
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3.1 Paging – ModifyPeriodCoeff
Version Parameter Value No Of Cells
Eran 3.0 MOD_PERIOD_COEFF_N2 816Eran 3.0 MOD_PERIOD_COEFF_N4 6Eran 2.1 MOD_PERIOD_COEFF_N4 516
Value Range: MOD_PERIOD_COEFF_N2(2), MOD_PERIOD_COEFF_N4(4), MOD_PERIOD_COEFF_N8(8), MOD_PERIOD_COEFF_N16(16)
Default Value = MOD_PERIOD_COEFF_N2 Eran 3.0Default Value = MOD_PERIOD_COEFF_N4 Eran 2.1
Meaning: Indicates the modification period coefficient for the BCCH. BCCH modification period = Modification period coefficient x Default paging cycle, where the BCCH modification period and default paging cycle are measured in unit of radio frames, and the modification period coefficient is specified by this parameter.
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3.2 Paging – PchPwr
Version Parameter Value No Of Cells
Eran 3.0 0 822Eran 2.1 0 516
Value Range: -3175~3175
Default Value = 0
Meaning: Indicates the offset of the transmit power for the paging information on the PDSCH channel relative to the reference signal power.
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3.3 Paging – DefaultPagingCycle
Version Parameter Value No Of Cells
Eran 3.0 rf128 822Eran 2.1 rf128 516
Value Range: rf32(32 radio frames), rf64(64 radio frames), rf128(128 radio frames), rf256(256 radio frames)
Default Value = rf128
Meaning: Indicates the default paging period for the cell. It is also called the discontinuous reception (DRX) period. If the EPC specifies a DRX period for a UE, the UE compares this period with the value of this parameter and uses the smaller one as its DRX period. If the EPC does not specify a DRX period, the UE uses the value of this parameter, which is delivered in the system information, as its DRX period. For details, see 3GPP TS 36.304.
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3.4 Paging – Nb
Version Parameter Value No Of Cells
Eran 3.0 ONET 822Eran 2.1 ONET 516
Value Range: FOURT, TWOT, ONET, HALFT, QUARTERT, ONE_EIGHTT, ONE_SIXTEENTHT, ONE_THIRTY_SECONDT
Default Value = ONET
Meaning: Indicates the number of paging occasions (subframes or times of paging) contained in a paging cycle.For details, see 3GPP TS 36.304.
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4.Intra-RAT
1. IntraFreqHoA3Hyst2. IntraFreqHoA3Offset3. IntraFreqHoA3TimeToTrig
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4.1 Intra-RAT – IntraFreqHoA3Hyst
Version Parameter Value No Of Cells
Eran 3.0 4 822Eran 2.1 4 516
Value Range: 0~30
Default Value = 2 (0.5dB)
Meaning: Indicates the hysteresis for event A3 associated with intra-frequency handover. This parameter prevents frequent triggering of event evaluation due to radio signal fluctuations. This reduces the probability of ping-pong handovers or handover decision errors. A larger value of this parameter results in a lower probability. The hysteresis for event A3 associated with inter-frequency handover is the same as the value of this parameter. For details, see 3GPP TS 36.331.
HQ evaluate this parameter for STC NW, give the suggestion to change to 4.
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4.2 Intra-RAT – IntraFreqHoA3Offset
Version Parameter Value No Of Cells
Eran 3.0 4 822Eran 2.1 4 516
Value Range: 0~30
Default Value = 2 (0.5dB)
Meaning: Indicates the offset for event A3. If the parameter is set to a large value, an intra-frequency handover is performed only when the signal quality of the neighboring cell is significantly better than that of the serving cell and other triggering conditions are met. For details, see 3GPP TS 36.331.
HQ evaluate this parameter for STC NW, give the suggestion to change to 4.
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4.3 Intra-RAT – IntraFreqHoA3TimeToTrig
Version Parameter Value No Of Cells
Eran 3.0 320ms 822Eran 2.1 320ms 516
Value Range: 0ms, 40ms, 64ms, 80ms, 100ms, 128ms, 160ms, 256ms, 320ms, 480ms, 512ms, 640ms, 1024ms, 1280ms, 2560ms, 5120ms
Default Value = 320ms
Meaning: Indicates the offset for event A3. If the parameter is set to a large value, an intra-frequency handover is performed only when the signal quality of the neighboring cell is significantly better than that of the serving cell and other triggering conditions are met. For details, see 3GPP TS 36.331.
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5.Inter-RAT
1. SNonIntraSearch2. ThrshServLow3. InterRatHoA1A2Hyst4. InterRatHoA1A2TimeToTrig5. InterRatHoA1ThdRsrp6. InterRatHoA1ThdRsrq7. InterRatHoA2ThdRsrp8. InterRatHoA2ThdRsrq9. BlindHoA2ThdOffset10. InterRatHoUtranB1ThdRscp 11. CsfbHoUtranB1ThdRscp12. InterRatHoA1A2TrigQuan
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5.1 Inter-RAT – SNonIntraSearch
Version Parameter Value No Of Cells
Eran 3.0 7 822Eran 2.1 7 513Eran 2.1 10 3
Value Range: 0~31
Default Value = 7 (2dB)
Meaning: Indicates the measurement triggering threshold for reselection to inter-frequency or inter-RAT cells. The step is 2 dB.
HQ recommended to set as 7.
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5.2 Inter-RAT – ThrshServLow
Version Parameter Value No Of Cells
Eran 3.0 7 822Eran 2.1 7 513Eran 2.1 10 3
Value Range: 0~31
Default Value = 7 (2dB)
Meaning: Indicates the threshold used in the evaluation of reselection to a cell on a lower priority E-UTRAN frequency or on an inter-RAT frequency. Cell reselection to a cell on a lower priority E-UTRAN frequency or on an inter-RAT frequency is performed if no cell on the serving frequency or on a higher priority E-UTRAN frequency fulfills criteria 1 for inter-frequency and inter-RAT reselections. For details, see 3GPP TS 36.304.
HQ recommended to set as 7.
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5.3 Inter-RAT – InterRatHoA1A2Hyst
Version Parameter Value No Of Cells
Eran 3.0 2 798Eran 3.0 4 24Eran 2.1 2 3Eran 2.1 4 513
Value Range: 0~30
Default Value = 2 (0.5dB) Eran 3.0Default Value = 4 (0.5dB) Eran 2.1
Meaning: Indicates the hysteresis for inter-RAT measurement events A1 and A2. This parameter is used to prevent frequent triggering of event evaluation caused by radio signal fluctuation. In this way, the probability of ping-pong handovers or handover decision errors is reduced. A larger value of this parameter results in a lower probability.
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5.4 Inter-RAT – InterRatHoA1A2TimeToTrig
Version Parameter Value No Of Cells
Eran 3.0 640ms 822Eran 2.1 640ms 516
Value Range: 0ms, 40ms, 64ms, 80ms, 100ms, 128ms, 160ms, 256ms, 320ms, 480ms, 512ms, 640ms, 1024ms, 1280ms, 2560ms, 5120ms
Default Value = 640ms
Meaning: Indicates the time-to-trigger for inter-RAT measurement event A1 or A2.When detecting that the signal quality in the serving cell meets the entering condition, the UE does not send a measurement report to the eNodeB immediately. Instead, the UE sends a report only when the signal quality continuously meets the entering condition during the time-to-trigger.
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5.5 Inter-RAT – InterRatHoA1ThdRsrp
Version Parameter Value No Of Cells
Eran 3.0 -111 822Eran 2.1 -111 513Eran 2.1 -105 3
Value Range: -141~-43
Default Value = -111 (dBm)
Meaning: Indicates the RSRP threshold for inter-RAT measurement event A1.When the measured RSRP value of the serving cell exceeds this threshold, an event A1 report will be sent. The value -141 does not take effect and is reserved for backward compatibility. If this parameter is set to -141, the value -140 is used as the threshold in implementation.
HQ recommended to set as -111.
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5.6 Inter-RAT – InterRatHoA1ThdRsrq
Version Parameter Value No Of Cells
Eran 3.0 -20 822Eran 2.1 -20 516
Value Range: -40~-6
Default Value = -20 (0.5dB)
Meaning: Indicates the RSRQ threshold for inter-RAT measurement event A1.When the measured RSRQ value of the serving cell exceeds this threshold, an event A1 report will be sent.
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5.7 Inter-RAT – InterRatHoA2ThdRsrp
Version Parameter Value No Of Cells
Eran 3.0 -115 822Eran 2.1 -115 513Eran 2.1 -109 3
Value Range: -141~-43
Default Value = -115 (dBm)
Meaning: Indicates the RSRP threshold for inter-RAT measurement event A2.When the measured RSRP value of the serving cell is below this threshold, an event A2 report will be sent. The value -141 does not take effect and is reserved for backward compatibility. If this parameter is set to -141, the value -140 is used as the threshold in implementation.
HQ recommended to set as -115.
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5.8 Inter-RAT – InterRatHoA2ThdRsrq
Version Parameter Value No Of Cells
Eran 3.0 -24 822Eran 2.1 -24 516
Value Range: -40~-6
Default Value = -24 (0.5dB)
Meaning: Indicates the RSRQ threshold for inter-RAT measurement event A2.When the measured RSRQ value of the serving cell is below this threshold, an event A2 report will be sent.
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5.9 Inter-RAT – BlindHoA2ThdOffset
Version Parameter Value No Of Cells
Eran 3.0 6 822
Eran 2.1 Eran 2.1 do not have this para
Value Range: 0~15
Default Value = 6 (dB) Eran 3.0
Meaning: Indicates the offset of the A2 threshold for inter-RAT blind redirection against the A2 threshold for inter-RAT handovers.
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5.10 Inter-RAT – InterRatHoUtranB1ThdRscp
Version Parameter Value No Of Cells
Eran 3.0 -103 822Eran 2.1 -103 516
Value Range: -120~-25
Default Value = -103 (dBm)
Meaning: Indicates the RSCP threshold for event B1 related to coverage-based inter-RAT handover to UTRAN.This parameter specifies the requirement for RSCP of the target UTRAN cell.When the measurement value exceeds this threshold, a measurement report will be sent.
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5.11 Inter-RAT – CsfbHoUtranB1ThdRscp
Version Parameter Value No Of Cells
Eran 3.0 -106 822Eran 2.1 -106 516
Value Range: -120~-25
Default Value = -106 (dBm)
Meaning: Indicates the RSCP threshold for event B1, which is used in CS fallback to UTRAN. When CS fallback to UTRAN is applicable, this parameter is set for UEs and used in the evaluation about whether to trigger event B1. This parameter indicates the RSCP requirement for the UTRAN cells to be included in the measurement report. A UE sends a measurement report related to event B1 to the eNodeB when the RSCP in at least one UTRAN cell exceeds this threshold and other triggering conditions are met. For details, see 3GPP TS 36.331.
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5.12 Inter-RAT – InterRatHoA1A2TrigQuan
Version Parameter Value No Of eNodeBs
Eran 3.0 RSRP 273Eran 3.0 BOTH 1Eran 2.1 RSRP 170Eran 2.1 BOTH 2
Value Range: RSRP, RSRQ, BOTH
Default Value = RSRP
Meaning: Indicates the quantity used to evaluate the triggering condition for the inter-RAT measurement event A1 or A2. The values are RSRP, RSRQ and BOTH.The measured RSRP values are stable, varying little with the load, and therefore there is little signal fluctuation. The measured RSRQ values vary with the load and are likely to reflect the signal quality of the cell in real time. By default, the reporting quantity for the inter-RAT handover event is BOTH, that is, both RSRP and RSRQ.For details, see 3GPP TS 36.331.
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6.Service Throughput
1. Pb2. ReferenceSignalPwr3. DELTAOFFSETRIINDEX
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6.1 Service Throughput – Pb
Version Parameter Value No Of Cells
Eran 3.0 1 822Eran 2.1 1 516
Value Range: 0~3
Default Value = 1
Meaning: Indicates the scaling factor index of the Energy Per Resource Element (EPRE) on the PDSCH. This scaling factor is determined by the value of this parameter and the antenna port. For details, see 3GPP TS 36.213.
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6.2 Service Throughput – ReferenceSignalPwr
Version Parameter Value No Of Cells
Eran 3.0 182 822Eran 2.1 182 516
Value Range: -600~500
Default Value = 182 (0.1dBm)
Meaning: Indicates the reference signal power of the cell. For details, see 3GPP TS 36.213.
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6.3 Service Throughput – DELTAOFFSETRIINDEX
Version Parameter Value No Of eNodeBs
Eran 3.0 5 274
Eran 2.1 Eran 2.1 do not have this para
Value Range: 1~15
Default Value = 5 Eran 3.0
Meaning: Indicates the index mapped to the MCS offset for rank indications (RIs) transmitted with data on PUSCH. The protocol does not recommend the values 13, 14, and 15. If this parameter is set to 13, 14, or 15, If this value is used, the UE performance may deteriorate. For details, see 3GPP TS 36.213.
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7.Common Parameter
1. TIMEALIGNMENTTIMER2. PdcchAggLvlCLAdjustSwitch3. CceRatioAdjSwitch4. DrxAlgSwitch
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7.1 Common Parameter – TIMEALIGNMENTTIMER
Version Parameter Value No Of Cells
Eran 3.0 SF10240 822
Eran 2.1 Eran 2.1 do not have this para
Value Range: SF500(500 subframes), SF750(750 subframes), SF1280(1280 subframes), SF1920(1920 subframes), SF2560(2560 subframes), SF5120(5120 subframes), SF10240(10240 subframes), INFINITY(Infinity)
Default Value = SF10240
Meaning: Indicates the length of the uplink time alignment timer for UEs in the cell. A UE is considered not time-aligned in the uplink if the timer expires.
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7.2 Common Parameter – PdcchAggLvlCLAdjustSwitch
Version Parameter Value No Of Cells
Eran 3.0 ON 813Eran 3.0 OFF 9
Eran 2.1 Eran 2.1 do not have this para
Value Range: OFF, ON
Default Value = ON
Meaning: Indicates the switch used to enable or disable closed-loop adjustment to the PDCCH aggregation level. If this switch is turned on, PDCCH aggregation level is adjusted based on the block error rate (BLER) of the PDCCH. If this switch is turned off, PDCCH aggregation level is not adjusted based on the BLER of the PDCCH.
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7.3 Common Parameter – CceRatioAdjSwitch
Version Parameter Value No Of Cells
Eran 3.0 ON 798Eran 3.0 OFF 24Eran 2.1 OFF 516
Value Range: OFF, ON
Default Value = ON Eran 3.0Default Value = OFF Eran 2.1
Meaning: Indicates the CCE ratio adjustment switch for the PDCCH. If this switch is turned on, the resource allocation algorithm of the PDCCH dynamically adjusts the UL and DL CCE ratios within each transmission time interval (TTI) based on CCE usages in UL and DL. If this switch is turned off, the UL and DL CCE ratios are not dynamically adjusted.
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7.4 Common Parameter – DrxAlgSwitch
Version Parameter Value No Of Cells
Eran 3.0 ON 20Eran 3.0 OFF 254Eran 2.1 ON 10Eran 2.1 OFF 162
Value Range: OFF, ON
Default Value = OFF
Meaning: Indicates the DRX switch.
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Thank You