4.5 RRC connection re-establishment

32.4053GPPPerformance Management (PM)Performance measurementsRelease 17Telecommunication managementTSUniversal Terrestrial Radio Access Network (UTRAN)

4.5.0 Introduction

The three measurement types defined in the subclause 4.5.n are subject to the "2 out of 3 approach".

4.5.1 Attempted RRC re-establishments

  1. This measurement provides the number of RRC re-establishments attempts.
  2. CC
  3. Receipt by the RNC of a CELL UPDATE message using the Cell Update cause "Radio link failure". See TS 25.331 [4].
  4. A single integer value
  5. RRC.AttConnReEstab.
  6. UtranCellFDD
    UtranCellTDDLcr
    UtranCellTDDHcr
  7. Valid for circuit switched and packet switched traffic
  8. UMTS

4.5.2 Failed RRC re-establishments

  1. This measurement provides the number of RRC re-establishment failures.
  2. CC
  3. Transmission of an RRC Connection Release message by RNC to the UE or an expected UTRAN Mobility Information Confirm message not received by RNC from the UE. See TS 25.331 [4].
    Each RRC Connection Release message received is added to the relevant per cause measurement. The possible causes are included in TS 25.331 [4].
    Each expected UTRAN Mobility Information Confirm message not received by the RNC is added to the measurement cause ‘No Reply’ (not specified in TS 25.331 [4]).
    The sum of all supported per cause measurements shall equal the total number of RRC re-establishment failures. In case only a subset of per cause measurements is supported, a sum subcounter will be provided first.
  4. Each measurement is an integer value. The number of measurements is equal to the number of causes plus a possible sum value identified by the .sum suffix.
  5. The measurement name has the form RRC.FailConnReEstab.Cause
    where Cause identifies the Failure Cause.
    The cause ‘No Reply’ is identified by the .NoReply suffix.
  6. UtranCellFDD
    UtranCellTDDLcr
    UtranCellTDDHcr
  7. Valid for circuit switched and packet switched traffic
  8. UMTS

4.5.3 Successful RRC re-establishments

  1. This measurement provides the number of successful RRC re-establishments.
  2. CC
  3. Receipt by the RNC of a UTRAN MOBILITY INFORMATION CONFIRM in a CELL UPDATE procedure using the value cause "Radio link failure". See TS 25.331 [4].
  4. A single integer value
  5. RRC.SuccConnReEstab.
  6. UtranCellFDD
    UtranCellTDDLcr
    UtranCellTDDHcr
  7. Valid for circuit switched and packet switched traffic
  8. UMTS