4G/LTE - LTE Advanced

RRC Connection Reconfiguration for Measuring the Second Cell

To make it sure that Network triggers adding the second cell only when UE can detect the second cell with a certain signal condition, Network usually perform measurement for the second cell. One of the example of this measurement process is as follows.

According to 36.331,

ThresholdEUTRA

For RSRP: RSRP based threshold for event evaluation. The actual value is IE value . 140 dBm.

For RSRQ: RSRQ based threshold for event evaluation. The actual value is (IE value . 40)/2 dB.

EUTRAN configures the same threshold quantity for all the thresholds of an event.

+-rrcConnectionReconfiguration ::= SEQUENCE

  +-rrc-TransactionIdentifier ::= INTEGER (0..3) [0]

  +-criticalExtensions ::= CHOICE [c1]

    +-c1 ::= CHOICE [rrcConnectionReconfiguration-r8]

      +-rrcConnectionReconfiguration-r8 ::= SEQUENCE [100000]

        +-measConfig ::= SEQUENCE [01010111000] OPTIONAL:Exist

        | +-measObjectToRemoveList ::= SEQUENCE OF OPTIONAL:Omit

        | +-measObjectToAddModList ::= SEQUENCE OF SIZE(1..maxObjectId[32]) [2] OPTIONAL:Exist

        | | +-MeasObjectToAddMod ::= SEQUENCE

        | | | +-measObjectId ::= INTEGER (1..maxObjectId[32]) [1]

        | | | +-measObject ::= CHOICE [measObjectEUTRA]

        | | |   +-measObjectEUTRA ::= SEQUENCE [100000]

        | | |     +-carrierFreq ::= INTEGER (0..maxEARFCN[65535]) [1575]

        | | |     +-allowedMeasBandwidth ::= ENUMERATED [mbw50]

        | | |     +-presenceAntennaPort1 ::= BOOLEAN [FALSE]

        | | |     +-neighCellConfig ::= BIT STRING SIZE(2) [01]

        | | |     +-offsetFreq ::= ENUMERATED [dB0] OPTIONAL:Exist

        | | |     +-cellsToRemoveList ::= SEQUENCE OF OPTIONAL:Omit

        | | |     +-cellsToAddModList ::= SEQUENCE OF OPTIONAL:Omit

        | | |     +-blackCellsToRemoveList ::= SEQUENCE OF OPTIONAL:Omit

        | | |     +-blackCellsToAddModList ::= SEQUENCE OF OPTIONAL:Omit

        | | |     +-cellForWhichToReportCGI ::= INTEGER OPTIONAL:Omit

        | | |     +-EXTENSION ::= SEQUENCE [0]

        | | |       +-VERSION-BRACKETS1 ::= SEQUENCE OPTIONAL:Omit

        | | +-MeasObjectToAddMod ::= SEQUENCE

        | |   +-measObjectId ::= INTEGER (1..maxObjectId[32]) [2]

        | |   +-measObject ::= CHOICE [measObjectEUTRA]

        | |     +-measObjectEUTRA ::= SEQUENCE [100000]

        | |       +-carrierFreq ::= INTEGER (0..maxEARFCN[65535]) [2525]

        | |       +-allowedMeasBandwidth ::= ENUMERATED [mbw50]

        | |       +-presenceAntennaPort1 ::= BOOLEAN [FALSE]

        | |       +-neighCellConfig ::= BIT STRING SIZE(2) [01]

        | |       +-offsetFreq ::= ENUMERATED [dB0] OPTIONAL:Exist

        | |       +-cellsToRemoveList ::= SEQUENCE OF OPTIONAL:Omit

        | |       +-cellsToAddModList ::= SEQUENCE OF OPTIONAL:Omit

        | |       +-blackCellsToRemoveList ::= SEQUENCE OF OPTIONAL:Omit

        | |       +-blackCellsToAddModList ::= SEQUENCE OF OPTIONAL:Omit

        | |       +-cellForWhichToReportCGI ::= INTEGER OPTIONAL:Omit

        | |       +-EXTENSION ::= SEQUENCE [0]

        | |         +-VERSION-BRACKETS1 ::= SEQUENCE OPTIONAL:Omit

        | +-reportConfigToRemoveList ::= SEQUENCE OF OPTIONAL:Omit

        | +-reportConfigToAddModList ::= SEQUENCE OF SIZE(1..maxReportConfigId[32]) [1]

        | | +-ReportConfigToAddMod ::= SEQUENCE

        | |   +-reportConfigId ::= INTEGER (1..maxReportConfigId[32]) [1]

        | |   +-reportConfig ::= CHOICE [reportConfigEUTRA]

        | |     +-reportConfigEUTRA ::= SEQUENCE

        | |       +-triggerType ::= CHOICE [event]

        | |       | +-event ::= SEQUENCE

        | |       |   +-eventId ::= CHOICE [eventA4]

        | |       |   | +-eventA4 ::= SEQUENCE

        | |       |   |   +-a4-Threshold ::= CHOICE [threshold-RSRP]

        | |       |   |     +-threshold-RSRP ::= INTEGER (0..97) [50]

        | |       |   +-hysteresis ::= INTEGER (0..30) [0]

        | |       |   +-timeToTrigger ::= ENUMERATED [ms256]

        | |       +-triggerQuantity ::= ENUMERATED [rsrp]

        | |       +-reportQuantity ::= ENUMERATED [both]

        | |       +-maxReportCells ::= INTEGER (1..maxCellReport[8]) [1]

        | |       +-reportInterval ::= ENUMERATED [ms1024]

        | |       +-reportAmount ::= ENUMERATED [r1]

        | |       +-EXTENSION ::= SEQUENCE [00]

        | |         +-VERSION-BRACKETS1 ::= SEQUENCE OPTIONAL:Omit

        | |         +-VERSION-BRACKETS2 ::= SEQUENCE OPTIONAL:Omit

        | +-measIdToRemoveList ::= SEQUENCE OF OPTIONAL:Omit

        | +-measIdToAddModList ::= SEQUENCE OF SIZE(1..maxMeasId[32]) [2] OPTIONAL:Exist

        | | +-MeasIdToAddMod ::= SEQUENCE

        | | | +-measId ::= INTEGER (1..maxMeasId[32]) [1]

        | | | +-measObjectId ::= INTEGER (1..maxObjectId[32]) [1]

        | | | +-reportConfigId ::= INTEGER (1..maxReportConfigId[32]) [1]

        | | +-MeasIdToAddMod ::= SEQUENCE

        | |   +-measId ::= INTEGER (1..maxMeasId[32]) [2]

        | |   +-measObjectId ::= INTEGER (1..maxObjectId[32]) [2]

        | |   +-reportConfigId ::= INTEGER (1..maxReportConfigId[32]) [1]

        | +-quantityConfig ::= SEQUENCE [1000] OPTIONAL:Exist

        | | +-quantityConfigEUTRA ::= SEQUENCE [00] OPTIONAL:Exist

        | | | +-filterCoefficientRSRP ::= ENUMERATED OPTIONAL:Omit

        | | | +-filterCoefficientRSRQ ::= ENUMERATED OPTIONAL:Omit

        | | +-quantityConfigUTRA ::= SEQUENCE OPTIONAL:Omit

        | | +-quantityConfigGERAN ::= SEQUENCE OPTIONAL:Omit

        | | +-quantityConfigCDMA2000 ::= SEQUENCE OPTIONAL:Omit

        | | +-EXTENSION ::= SEQUENCE [0]

        | |   +-VERSION-BRACKETS1 ::= SEQUENCE OPTIONAL:Omit

        | +-measGapConfig ::= CHOICE [setup] OPTIONAL:Exist

        | | +-setup ::= SEQUENCE

        | |   +-gapOffset ::= CHOICE [gp0]

        | |     +-gp0 ::= INTEGER (0..39) [30]

        | +-s-Measure ::= INTEGER OPTIONAL:Omit

        | +-preRegistrationInfoHRPD ::= SEQUENCE OPTIONAL:Omit

        | +-speedStatePars ::= CHOICE OPTIONAL:Omit

        | +-EXTENSION ::= SEQUENCE [0]

        |   +-VERSION-BRACKETS1 ::= SEQUENCE OPTIONAL:Omit

        +-mobilityControlInfo ::= SEQUENCE OPTIONAL:Omit

        +-dedicatedInfoNASList ::= SEQUENCE OF OPTIONAL:Omit

        +-radioResourceConfigDedicated ::= SEQUENCE OPTIONAL:Omit

        +-securityConfigHO ::= SEQUENCE OPTIONAL:Omit

        +-nonCriticalExtension ::= SEQUENCE OPTIONAL:Omit

+-measurementReport ::= SEQUENCE

  +-criticalExtensions ::= CHOICE [c1]

    +-c1 ::= CHOICE [measurementReport-r8]

      +-measurementReport-r8 ::= SEQUENCE [0]

        +-measResults ::= SEQUENCE [1]

        | +-measId ::= INTEGER (1..maxMeasId[32]) [2]

        | +-measResultPCell ::= SEQUENCE

        | | +-rsrpResult ::= INTEGER (0..97) [73]

        | | +-rsrqResult ::= INTEGER (0..34) [20]

        | +-measResultNeighCells ::= CHOICE [measResultListEUTRA] OPTIONAL:Exist

        | | +-measResultListEUTRA ::= SEQUENCE OF SIZE(1..maxCellReport[8]) [1]

        | |   +-MeasResultEUTRA ::= SEQUENCE [0]

        | |     +-physCellId ::= INTEGER (0..503) [0]

        | |     +-cgi-Info ::= SEQUENCE OPTIONAL:Omit

        | |     +-measResult ::= SEQUENCE [11]

        | |       +-rsrpResult ::= INTEGER (0..97) [73] OPTIONAL:Exist

        | |       +-rsrqResult ::= INTEGER (0..34) [29] OPTIONAL:Exist

        | |       +-EXTENSION ::= SEQUENCE [0]

        | |         +-VERSION-BRACKETS1 ::= SEQUENCE OPTIONAL:Omit

        | +-EXTENSION ::= SEQUENCE [00]

        |   +-VERSION-BRACKETS1 ::= SEQUENCE OPTIONAL:Omit

        |   +-VERSION-BRACKETS2 ::= SEQUENCE OPTIONAL:Omit

        +-nonCriticalExtension ::= SEQUENCE OPTIONAL:Omit