Ericsson Important Optimization Parameters

Ericsson Important Optimization Parameters Here i attached some Ericsson Important Optimization Parameters, System Configuration primaryCpichPower: Parameter that controls the power level of the Primary CPICH. maximumTransmissionPower: Parameter that can be used to limit the total DL power in a cell to a value lower than DL power capability of the RBS. maxTxPowerUl: Used in UE functions for cell selection/ re-selection in idle mode and connected mode and also used by UTRAN to control the maximum transmitted power level a UE can use. Capacity Management compModeAdm: Absolute admission limit for the number of radio links in compressed mode in a cell. dlCodeAdm: Parameter that defines in percentage the absolute admission limit for DL code usage pwrAdm: Parameter that defines in percentage the absolute admission limit for DL power utilization. sf8Adm: Defines the absolute admission limit for the number of RLs with SF=8 (PS384) in DL. sf16Adm: Defines the absolute admission limit for the number of RLs with SF=16 (PS128 RAB) in DL. sf32Adm: Defines the absolute admission limit for the number of RLs with SF=32 (PS64) in DL. sf4AdmUl: Absolute admission limit for the number of RLs with SF=4 in UL (PS384/HS) sf8AdmUl: Defines the absolute admission limit for the number of RLs with SF=8 in UL. sf16AdmUL: Parameter that defines absolute admission limit for the number of RLs with SF=16 in UL. Directed Retry loadSharingDirectedRetryEnabled: An RNC-wide flag for turning on the feature. directedRetryTarget: UA cell specific parameter that specifies the Directed Retry target in terms of a cell reference to an external GSM cell. loadSharingGSMThreshold: A cell specific parameter that specifies the load sharing threshold below which Directed Retry to GSM is suppressed. loadSharingGSMFraction: A cell specific parameter that specifies the fraction of qualified speech calls to be diverted to GSM. Handover maxActiveSet: Maximum number of cells allowed in the Active Set. IndividualOffset: Offset value which can be assigned to each cell. It is added to the measurement quantity before the UE evaluates whether or not an event has occurred. It can either be positive or negative value. measQuantity1: Defines the measurement quantity for intra-frequency reporting evaluation. Default is EcNo. hsQualityEstimate: Indicates whether Ec/No or RSCP should be used for indicating "best cell"

for HS-DSCH Cell Change. Default is RSCP. reportingRange1a: Relative threshold referred to the CPICH of the best cell in the Active Set used as evaluation criteria for event 1a (a primary CPICH enters the reporting range). reportingRange1b: Relative threshold referred to CPICH of the best cell in the Active Set used as evaluation criteria for event 1b (a primary CPICH leaves the reporting range). reportingInterval1a: Time between periodic reports at event-triggered periodic reporting for event 1a timeToTrigger1a: If event 1a condition is fulfilled during at least a time greater than or equal to timeToTrigger1a milliseconds, then event 1a occurs. timeToTrigger2dEcno: If event 2d condition is fulfilled during at least a time greater than or equal to timeToTrigger2dEcno milliseconds, then event 2d occurs HSDPA/EUL numHsPdschCodes: Parameter that defines the number of codes allocated in a call only for HSPDSCH (SF 16). maxNumHsPdschCodes: Defines the maximum number of HS-PDSCH codes that may be allocated in a cell. hsdpaUsersAdm: Cell parameter that defines the admission limit for the number of users assigned to the HS-DSCH. Applicable to admission requests related to RAB setup of an HSDPA service. maxNumHsdpaUsers: Limits the maximum allowed number of simultaneous HSDPA users per cell that can be served. eulServingCellUsersAdm: Defines the admission limit for the number of EUL users having the cell as serving cell. eulNonServingCellUsersAdm: Cell parameter that defines the admission limit foe the number of EUL users having the cell as non-serving cell. hsdschInactivityTimer: Time during which throughput has to be low in order to trigger a downswitch (dedicated to common state) for a UE in state DCH/HS or in state EUL/HS. IRAT usedFreqThresh2dRscp: Threshold for event 2d (the estimated quality of the currently used WCDMA RAN frequency is below a certain threshold) based on RSCP measurements. usedFreqThresh2dEcno: Threshold for event 2d (the estimated quality of the currently used WCDMA RAN frequency is below a certain threshold) based on EcNo measurements.. gsmThresh3a: Threshold for event 3a (the estimated quality of the currently used WCDMA RAN frequency is below a certain threshold and the estimated quality of the GSM system is above a certain threshold) for GSM. gsmPropRepeatInterval: Minimum time interval between proposals of the same GSM cell for handover based on the same measurement report. gsmAmountPropRepeat: Maximum number of repeated proposals (not including the first proposal) of GSM cells for handover based on the same measurement report. Idle Mode (Selection/ Reselection) qQualMin: Minimum required quality level in the cell measured in the UE. qRxLevMin: Parameter that indicates the min. required signal strength in the cell qualMeasQuantity: Used for decision as to whether the 3G ranking for cell selection and

reselection is based on EcNo or RSCP. Default is EcNo. qHyst1: Hysteresis values used for serving cell, when ranking is based on CPICH RSCP qHyst2: Hysteresis values used for serving cell, when ranking is based on CPICH EcNo qOffset1sn: Signal strength offset b/w source and target cell for cell ranking based on CPICH RSCP. qOffset2sn: Signal offset between serving cell and neighbor cell, based on CPICH EcNo. sIntraSearch: Decision on when intra-freq. measurements should be performed. Following criteria is used: sIntraSearch ≥ qQualmeas - qQualMin (where qQualmeas is the value measured by UE ) sInterSearch: Parameter is used to make decision to start inter-freq. measurements. sInterSearch ≥ qQualmeas - qQualMin (where qQualmeas is the value measured by UE ) sRatSearch: Decision on when GSM measurement should be performed in relation to qQualMin. sRatSearch ≥ qQualMeas – qQualMin (where qQualmeas is the value measured by UE ) sHcsRatSearch: Decision on when GSM measurement should be performed in relation to qRxLevMin. sHcsRatSearch ≥ qRxLevMeas – qRxLevMin (where qRxLevMeas is the value measured by UE)

Ericsson 3G cell optimization paramters guide Objective:Statistical RNC/RXI/RBS counters reflect the performance of a 3G cell within the network. Specific counters are analysed to detect various faults. The objective of the procedure is therefore to trace any network-related faults to the source of the problem by analysing the fault symptoms evident in the counter values. Accessibility:-

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Admission Control: DL Power

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Admission Control: DL Channelisation Codes

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Admission Control: UL/DL ASE

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Admission Control: Connection Limits

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Admission Control: Hardware Usage (Channel Elements)

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Failure After Admission: Iub Congestion

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Failure After Admission: Core Transport Network Congestion

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Failure after Admission: Hardware Usage (Channel Elements)

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Failure After Admission: Other

Retainability:-

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Soft Handover Drops

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Missing Neighbour Drops

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UL Synchronisation Drops

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Release due to Congestion Resolve Action

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Other Reasons for Drops

INTEGRITY

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UL Block Error Rate

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Drive Test Based Service Quality Measurements

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R99 & HSDPA PS Interactive Throughput (RNC Level)

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HSDPA (MAC-HS) Throughput (Cell Level)

Others

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Considerations for HSDPA: DL Channelisation Codes

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Considerations for HSDPA: Iub Bandwidth

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Considerations for HSDPA: Throughputs Above 3.6Mbps (Cat 7-10 UEs)

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Considerations for HSDPA: Channel Element UsageOffloading Traffic: Directed Retry to GSM

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Offloading Traffic: Directed Retry to GSM

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Offloading Traffic: Service Based Handover (P5+)