4.9 Radio link management procedures

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

4.9.1 Overview

4.9.1.1 Considered radio link management procedures

Performance Measurement definitions in subclause 4.9 are based on the TS 25.423 [6] and TS 25.433 [7].

The following paragraphs are of interest for this purpose:

– Radio Link Setup (NBAP);

– Radio Link Addition (NBAP);

– Radio Link Deletion (NBAP);

– Radio Link Setup (RNSAP);

– Radio Link Addition (RNSAP);

– Radio Link Deletion (RNSAP);

– RADIO LINK SETUP REQUEST (NBAP);

– RADIO LINK SETUP RESPONSE (NBAP);

– RADIO LINK SETUP FAILURE (NBAP);

– RADIO LINK ADDITION REQUEST (NBAP);

– RADIO LINK ADDITION RESPONSE (NBAP);

– RADIO LINK ADDITION FAILURE (NBAP);

– RADIO LINK DELETION REQUEST (NBAP);

– RADIO LINK DELETION RESPONSE (NBAP);

– RADIO LINK SETUP REQUEST (RNSAP);

– RADIO LINK SETUP RESPONSE (RNSAP);

– RADIO LINK SETUP FAILURE (RNSAP);

– RADIO LINK ADDITION REQUEST (RNSAP);

– RADIO LINK ADDITION RESPONSE (RNSAP);

– RADIO LINK ADDITION FAILURE (RNSAP);

– RADIO LINK DELETION REQUEST (RNSAP);

– RADIO LINK DELETION RESPONSE (RNSAP).

These paragraphs show in particular the following diagrams:

Figure: Radio Link Setup procedure on Iub, Successful Operation

Figure: Radio Link Setup procedure on Iub, Unsuccessful Operation

Figure: Radio Link Addition procedure on Iub, Successful Operation

Figure: Radio Link Addition procedure on Iub, Unsuccessful Operation

Figure: Radio Link Deletion procedure on Iub, Successful Operation

Figure: Radio Link Setup procedure on Iur, Successful Operation

Figure: Radio Link Setup procedure on Iur, Unsuccessful Operation

Figure: Radio Link Addition procedure on Iur, Successful Operation

Figure: Radio Link Addition procedure on Iur, Unsuccessful Operation

Figure: Radio Link Deletion procedure on Iur, Successful Operation

4.9.1.2 Relation between Iub measurements and Iur measurements

The following figure shows the relation between Iub interface and Iur interface. There are two cases for SRNC (CRNC1) to request radio link management activities in this figure.

In case (1), SRNC (CRNC1) sets up/adds/deletes radio links in NodeB1 and NodeB1 is directly controlled by SRNC (CRNC1).

In case (2/2bis), NodeB2 is directly controlled by DRNC (CRNC2). If SRNC (CRNC1) wants to set up/add/delete radio links in NodeB2, SRNC (CRNC1) will send request to DRNC (CRNC2), and DRNC (CRNC2) set up/add/delete radio links in NodeB2. In such case, if DRNC (CRNC2) fails to set up/add radio links in NodeB2 and receives failure message from NodeB2, DRNC (CRNC2) will send failure message back to SRNC (CRNC1). Furthermore if DRNC (CRNC2) has problem inside and fails to send request to NodeB2, it will send failure message back to the SRNC (CRNC1) directly.

Figure: Relation between Iub interface and Iur interface

Subclause 4.9 has separated measurements for both Iur interface and Iub interface. From the above figure and description, we can see that the Iub interface measurements and Iur interface measurements overlap in some degree. Based on maintenance requirements, these two kinds measurements are needed and they are useful for operators to evaluate both the Iub interface and Iur interface, and to analyze all the failure cases they concern.

4.9.2 Radio link setups on Iub

4.9.2.0 Introduction

The three measurement types defined in the subclauses 4.9.2.n for radio link setups on Iub are subject to the "2 out of 3 approach".

4.9.2.1 Attempted radio link setups on Iub

  1. This measurement provides the number of attempted radio link setups on Iub for each cell. This measurement shall be increased for each attempted radio link setup on Iub. This measurement is valid for FDD and TDD mode.
  2. CC
  3. Transmission of a RADIO LINK SETUP REQUEST message (NBAP) by the controlling RNC to the NodeB. Within a RADIO LINK SETUP REQUEST message more than one radio link can be set up. Each existing radio link information element shall be considered separately (see TS 25.433 [7]).
  4. A single integer value
  5. RLM.AttRLSetupIub.
  6. UtranCellFDD
    UtranCellTDDLcr
    UtranCellTDDHcr
  7. Valid for circuit switched and packet switched traffic
  8. UMTS

4.9.2.2 Successful radio link setups on Iub

  1. This measurement provides the number of successful radio link setups on Iub for each cell. This measurement shall be increased for each successful radio link setup on Iub. This measurement is valid for FDD and TDD mode.
  2. CC
  3. This measurement is based on two different events:

– Receipt of a RADIO LINK SETUP RESPONSE message (NBAP) sent by NodeB to the controlling RNC in response to a RADIO LINK SETUP REQUEST message with one or more existing radio link information elements. One RADIO LINK SETUP RESPONSE message can be related to more than one radio link. Each radio link that is set up successfully shall be considered separately (see TS 25.433 [7]).

– Receipt of a RADIO LINK SETUP FAILURE message (NBAP) sent by NodeB to the controlling RNC in response to a RADIO LINK SETUP REQUEST message with at least one Successful RL Information Response information element. One RADIO LINK SETUP FAILURE message can be related to more than one radio link. Each radio link that is set up successfully shall be considered separately (see TS 25.433 [7]).

  1. A single integer value
  2. RLM.SuccRLSetupIub.
  3. UtranCellFDD
    UtranCellTDDLcr
    UtranCellTDDHcr
  4. Valid for circuit switched and packet switched traffic
  5. UMTS

4.9.2.3 Failed radio link setups on Iub

  1. This measurement provides the number of failed radio link setups on Iub for each cell. This measurement shall be increased for each failed radio link setup on Iub. For each failure cause a separate measurement is defined. Every failed radio link setup on Iub shall be considered separately. This measurement is valid for FDD and TDD mode.
  2. CC
  3. Receipt of a RADIO LINK SETUP FAILURE message (NBAP) sent by NodeB to the controlling RNC in response to a RADIO LINK SETUP REQUEST message with one or more existing radio link information elements. One RADIO LINK SETUP FAILURE message can be related to more than one radio link. Each failed attempt to set up a radio link shall be considered separately. Failure causes are defined within TS 25.433 [7].

Each expected RADIO LINK SETUP RESPONSE or RADIO LINK SETUP FAILURE not received by the controlling RNC is added to the measurement cause ‘No Reply’ (not specified in TS 25.433 [7]).

The sum of all supported per cause measurements shall equal the total number of failures. In case only a subset of per cause measurements is supported, a sum measurement subtype will be provided first.

  1. Each measurement is an integer value. The number of measurements is equal to the number of causes supported plus a possible sum value identified by the .sum suffix.
  2. The measurement name has the form RLM.FailRLSetupIub.Cause
    where Cause identifies the failure cause.
  3. UtranCellFDD
    UtranCellTDDLcr
    UtranCellTDDHcr
  4. Valid for circuit switched and packet switched traffic
  5. UMTS

4.9.3 Radio link setups on Iur

4.9.3.0 Introduction

The three measurement types defined in the subclauses 4.9.3.n for radio link setups on Iur are subject to the "2 out of 3 approach".

4.9.3.1 Attempted radio link setups on Iur

  1. This measurement provides the number of attempted radio link setups on Iur for each cell. This measurement shall be increased for each attempted radio link setup on Iur. This measurement is valid only for FDD mode.
  2. CC
  3. Receipt of a RADIO LINK SETUP REQUEST message (RNSAP) sent by the serving RNC to the drift RNC. Within a RADIO LINK SETUP REQUEST message more than one radio link can be set up. Each existing radio link information element shall be considered separately (see TS 25.423 [6]).
  4. A single integer value
  5. RLM.AttRLSetupIur.
  6. UtranCellFDD
  7. Valid for circuit switched and packet switched traffic
  8. UMTS

4.9.3.2 Successful radio link setups on Iur

  1. This measurement provides the number of successful radio link setups on Iur for each cell. This measurement shall be increased for each successful radio link setup on Iur. This measurement is valid only for FDD mode.
  2. CC
  3. This measurement is based on two different events:

– Transmission of a RADIO LINK SETUP RESPONSE message (RNSAP) by the drift RNC to the serving RNC in response to a RADIO LINK SETUP REQUEST message with one or more existing radio link information elements. One RADIO LINK SETUP RESPONSE message can be related to more than one radio link. Each radio link that is set up successfully shall be considered separately (see TS 25.423 [6]).

– Transmission of a RADIO LINK SETUP FAILURE message (RNSAP) by the drift RNC to the serving RNC in response to a RADIO LINK SETUP REQUEST message with at least one Successful RL Information Response information element. One RADIO LINK SETUP FAILURE message can be related to more than one radio link. Each radio link that is set up successfully shall be considered separately (see TS 25.423 [6]).

  1. A single integer value
  2. RLM.SuccRLSetupIur.
  3. UtranCellFDD
  4. Valid for circuit switched and packet switched traffic
  5. UMTS

4.9.3.3 Failed radio link setups on Iur

  1. This measurement provides the number of failed radio link setups on Iur for each cell. This measurement shall be increased for each failed radio link setup on Iur. For each failure cause a separate measurement is defined. Every failed radio link setup on Iur shall be considered separately. This measurement is valid only for FDD mode.
  2. CC
  3. Transmission of a RADIO LINK SETUP FAILURE message (RNSAP) by the drift RNC to the serving RNC in response to a RADIO LINK SETUP REQUEST message with one or more existing radio link information elements. One RADIO LINK SETUP FAILURE message can be related to more than one radio link. Each failed attempt to set up a radio link shall be considered separately. Failure causes are defined within TS 25.423 [6].

    The sum of all supported per cause measurements shall equal the total number of failures. In case only a subset of per cause measurements is supported, a sum measurement subtype will be provided first.

  4. Each measurement is an integer value. The number of measurements is equal to the number of causes supported plus a possible sum value identified by the .sum suffix.
  5. The measurement name has the form RLM.FailRLSetupIur.Cause
    where Cause identifies the failure cause.
  6. UtranCellFDD
  7. Valid for circuit switched and packet switched traffic
  8. UMTS

4.9.4 Radio link additions on Iub

4.9.4.0 Introduction

The three measurement types defined in the subclauses 4.9.4.n for radio link additions on Iub are subject to the "2 out of 3 approach".

4.9.4.1 Attempted radio link additions on Iub

  1. This measurement provides the number of attempted radio link additions on Iub for each cell. This measurement shall be increased for each attempted radio link addition on Iub. This measurement is valid for FDD and TDD mode.
  2. CC
  3. Transmission of a RADIO LINK ADDITION REQUEST message (NBAP) by the controlling RNC to the NodeB. Within a RADIO LINK ADDITION REQUEST message more than one radio link can be added. Each existing radio link information element shall be considered separately (see TS 25.433 [7]).
  4. A single integer value
  5. RLM.AttRLAddIub.
  6. UtranCellFDD
    UtranCellTDDLcr
    UtranCellTDDHcr
  7. Valid for circuit switched and packet switched traffic
  8. UMTS

4.9.4.2 Successful radio link additions on Iub

  1. This measurement provides the number of successful radio link additions on Iub for each cell. This measurement shall be increased for each successful radio link addition on Iub. This measurement is valid for FDD and TDD mode.
  2. CC
  3. This measurement is based on two different events:

– Receipt of a RADIO LINK ADDITION RESPONSE message (NBAP) sent by NodeB to the controlling RNC in response to a RADIO LINK ADDITION REQUEST message with one or more existing radio link information elements. One RADIO LINK ADDITION RESPONSE message can be related to more than one added radio link. Each successful added radio link shall be considered separately (see TS 25.433 [7]).

– Receipt of a RADIO LINK ADDITION FAILURE message (NBAP) sent by NodeB to the controlling RNC in response to a RADIO LINK ADDITION REQUEST message with at least one Successful RL Information Response information element. One RADIO LINK ADDITION FAILURE message can be related to more than one radio link. Each successful added radio link shall be considered separately (see TS 25.433 [7]).

  1. A single integer value
  2. RLM.SuccRLAddIub.
  3. UtranCellFDD
    UtranCellTDDLcr
    UtranCellTDDHcr
  4. Valid for circuit switched and packet switched traffic
  5. UMTS

4.9.4.3 Failed radio link additions on Iub

  1. This measurement provides the number of failed radio link additions on Iub for each cell. This measurement shall be increased for each failed radio link addition on Iub. For each failure cause a separate measurement is defined. Every failed radio link addition on Iub shall be considered separately. This measurement is valid for FDD and TDD mode.
  2. CC
  3. Receipt of a RADIO LINK ADDITION FAILURE message (NBAP) sent by NodeB to the controlling RNC in response to a RADIO LINK ADDITION REQUEST message with one or more existing radio link information elements. One RADIO LINK ADDITION FAILURE message can be related to more than one radio link. Each failed attempt to add a radio link shall be considered separately. Failure causes are defined within TS 25.433 [7].

Each expected RADIO LINK ADDITION RESPONSE or RADIO LINK ADDITION FAILURE not received by the controlling RNC is added to the measurement cause ‘No Reply’ (not specified in TS 25.433 [7]).

The sum of all supported per cause measurements shall equal the total number of failures. In case only a subset of per cause measurements is supported, a sum measurement subtype will be provided first.

  1. Each measurement is an integer value. The number of measurements is equal to the number of causes supported plus a possible sum value identified by the .sum suffix.
  2. The measurement name has the form RLM.FailRLAddIub.Cause
    where Cause identifies the failure cause.
  3. UtranCellFDD
    UtranCellTDDLcr
    UtranCellTDDHcr
  4. Valid for circuit switched and packet switched traffic
  5. UMTS

4.9.5 Radio link additions on Iur

4.9.5.0 Introduction

The three measurement types defined in the subclauses 4.9.5.n for radio link additions on Iur are subject to the "2 out of 3 approach".

4.9.5.1 Attempted radio link additions on Iur

  1. This measurement provides the number of attempted radio link additions on Iur for each cell. This measurement shall be increased for each attempted radio link addition on Iur. This measurement is valid only for FDD mode.
  2. CC
  3. Receipt of a RADIO LINK ADDITION REQUEST message (RNSAP) sent by the serving RNC to the drift RNC. Within a RADIO LINK ADDITION REQUEST message more than one radio link can be added. Each existing radio link information element shall be considered separately (see TS 25.423 [6]).
  4. A single integer value
  5. RLM.AttRLAddIur.
  6. UtranCellFDD
  7. Valid for circuit switched and packet switched traffic
  8. UMTS

4.9.5.2 Successful radio link additions on Iur

  1. This measurement provides the number of successful radio link additions on Iur for each cell. This measurement shall be increased for each successful radio link addition on Iur. This measurement is valid only for FDD mode.
  2. CC
  3. This measurement is based on two different events:

– Transmission of a RADIO LINK ADDITION RESPONSE message (RNSAP) by the drift RNC to the serving RNC in response to a RADIO LINK ADDITION REQUEST message with one or more existing radio link information elements. One RADIO LINK ADDITION RESPONSE message can be related to more than one added radio link. Each successful added radio link shall be considered separately (see TS 25.423 [6]).

– Transmission of a RADIO LINK ADDITION FAILURE message (RNSAP) by the drift RNC to the serving RNC in response to a RADIO LINK ADDITION REQUEST message with at least one Successful RL Information Response information element. One RADIO LINK ADDITION FAILURE message can be related to more than one radio link. Each successful added radio link shall be considered separately (see TS 25.423 [6]).

  1. A single integer value
  2. RLM.SuccRLAddIur.
  3. UtranCellFDD
  4. Valid for circuit switched and packet switched traffic
  5. UMTS

4.9.5.3 Failed radio link additions on Iur

  1. This measurement provides the number of failed radio link additions on Iur for each cell. This measurement shall be increased for each failed radio link addition on Iur. For each failure cause a separate measurement is defined. Every failed radio link addition shall be considered separately. This measurement is valid only for FDD mode.
  2. CC
  3. Transmission of a RADIO LINK ADDITION FAILURE message (RNSAP) by the drift RNC to the serving RNC in response to a RADIO LINK ADDITION REQUEST message with one or more existing radio link information elements. One RADIO LINK ADDITION FAILURE message can be related to more than one radio link. Each failed attempt to add a radio link shall be considered separately. Failure causes are defined within TS 25.423 [6].

The sum of all supported per cause measurements shall equal the total number of Failures. In case only a subset of per cause measurements is supported, a sum measurement subtype will be provided first.

  1. Each measurement is an integer value. The number of measurements is equal to the number of causes supported plus a possible sum value identified by the .sum suffix.
  2. The measurement name has the form RLM.FailRLAddIur.Cause
    where Cause identifies the failure cause.
  3. UtranCellFDD
  4. Valid for circuit switched and packet switched traffic
  5. UMTS

4.9.6 Radio link deletions on Iub

4.9.6.1 Attempted radio link deletions on Iub

  1. This measurement provides the number of attempted radio link deletions on Iub for each cell. This measurement shall be increased for each attempted radio link deletion on Iub. This measurement is valid for FDD and TDD mode.
  2. CC
  3. Transmission of a RADIO LINK DELETION REQUEST message (NBAP) by the controlling RNC to the NodeB. Within a RADIO LINK DELETION REQUEST message more than one radio link can be removed. Each existing radio link information element shall be considered separately (see TS 25.433 [7]).
  4. A single integer value
  5. RLM.AttRLDelIub.
  6. UtranCellFDD
    UtranCellTDDLcr
    UtranCellTDDHcr
  7. Valid for circuit switched and packet switched traffic
  8. UMTS

4.9.6.2 Successful radio link deletions on Iub

  1. This measurement provides the number of successful radio link deletions on Iub for each cell. This measurement shall be increased for each successful radio link deletion on Iub. This measurement is valid for FDD and TDD mode.
  2. CC
  3. Receipt of a RADIO LINK DELETION RESPONSE message (NBAP) sent by NodeB to the controlling RNC in response to a RADIO LINK DELETION REQUEST message with one or more existing radio link removal information element. One RADIO LINK DELETION RESPONSE message can be related to more than one deleted radio link. Each successful deleted radio link shall be considered separately (see TS 25.433 [7]).
  4. A single integer value
  5. RLM.SuccRLDelIub.
  6. UtranCellFDD
    UtranCellTDDLcr
    UtranCellTDDHcr
  7. Valid for circuit switched and packet switched traffic
  8. UMTS

4.9.7 Radio link deletions on Iur

4.9.7.1 Attempted radio link deletions on Iur

  1. This measurement provides the number of attempted radio link deletions on Iur for each cell. This measurement shall be increased for each attempted radio link deletion on Iur. This measurement is valid only for FDD mode.
  2. CC
  3. Receipt of a RADIO LINK DELETION REQUEST message (RNSAP) sent by the serving RNC to the drift RNC. Within a RADIO LINK DELETION REQUEST message more than one radio link can be removed. Each existing radio link information element shall be considered separately (see TS 25.423 [6]).
  4. A single integer value
  5. RLM.AttRLDelIur.
  6. UtranCellFDD
  7. Valid for circuit switched and packet switched traffic
  8. UMTS

4.9.7.2 Successful radio link deletions on Iur

  1. This measurement provides the number of successful radio link deletions on Iur for each cell. This measurement shall be increased for each successful radio link deletion on Iur. This measurement is valid only for FDD mode.
  2. CC
  3. Transmission of a RADIO LINK DELETION RESPONSE message (RNSAP) by the drift RNC to the serving RNC in response to a RADIO LINK DELETION REQUEST message with one or more existing radio link removal information element. One RADIO LINK DELETION RESPONSE message can be related to more than one deleted radio link. Each successful deleted radio link shall be considered separately (see TS 25.423 [6]).
  4. A single integer value
  5. RLM.SuccRLDelIur.
  6. UtranCellFDD
  7. Valid for circuit switched and packet switched traffic
  8. UMTS