B.3 Coordination of COC, CCO and ES based on the cell state

32.5223GPPInformation Service (IS)Release 11Self-Organizing Networks (SON) Policy Network Resource Model (NRM) Integration Reference Point (IRP)Telecommunication managementTS

The following lists the examples of how SON Coordination Function (SCF) can resolve the conflicts between COC, CCO, and ES functions based on cell state. Although not shown, priority may be used to along with the cell state to resolve the conflicts.

Possible conflict #1: COC requests a cell that is compensating an energy saving cell to compensate an outage cell

Resolution: When COC requests SCF that cell A is going to compensate an outaged cell, SCF should check whether cell A is compensating an energy saving cell. If so, SCF should check whether cell A can compensate both the outage cell and the energy saving cell concurrently. If not, the SCF may disallow cell A to compensate an energy saving cell.

Possible conflict #2: COC requests a cell that is being changed or going to be changed by CCO to compensate an outage cell

Resolution: When COC requests SCF that cell A is going to compensate an outaged cell, SCF should check whether CCO is updating parameters to optimize the capacity and coverage of cell A. If so, SCF may not allow cell A to compensate an outaged cell; otherwise SCF should allow cell A to compensate an outage cell.

Possible conflict #3: ES requests a candidate cell that is compensating an outage cell to compensate an energy saving cell

Resolution: When ES request SCF that cell A is to compensate a cell going to enter energy saving, SCF should check the cOCStatus.state of cell A. If cOCStatus.state = cOCCompensating, SCF should check whether cell A can compensate both the outage cell and the energy saving cell concurrently. If not, the SCF may disallow cell A to compensate an energy saving cell.

Possible conflict #4: ES requests a cell that is being changed or going to be changed by CCO to compensate an energy saving cell

Resolution: When ES requests SCF that cell A is going to compensate a cell going to enter energy saving, SCF should check whether CCO is updating parameters to optimize the capacity and coverage of cell A. If so, SCF may not allow cell A to compensate an energy saving cell; otherwise SCF should allow cell A to compensate an outage cell.

Possible conflict #5: CCO is going to change the configuration parameter of a cell that is compensating an outage cell

Resolution: When CCO requests SCF that cell A is going to change the configuration parameter, SCF should check the cOCStatus.state of cell A. If cOCStatus.state = cOCCompensating, SCF should disallow cell A to change the configuration parameter.

Annex C (informative):
State diagram for Distributed and EM-centralized Energy Saving Management

Energy Saving Management “state” attributes are available at various levels:

– SubNetwork IOC level, via the attribute esSwitch defined in the IOC SonControl;

– ENBFunction IOC level, via the attribute esSwitch defined in the IOC SonControl;

– EUtranGenericCell IOC level, via the locally defined attribute isChangeForEnergySavingAllowed, and via the attribute energySavingState defined in the IOC EnergySavingProperties.

The following figure provides an overview of Energy Saving Management related IOCs, state attribute names and possible values, for Distributed and EM-centralized Energy Saving Management:

Figure C-1: IOCs and state attributes for Distributed and EM-centralized ESM

Dependencies exist between distributed ESM state attributes. The diagram below shows which allowed combinations of attribute state values, and which state transitions, are valid and which are not.

Figure C-2: State diagram for Distributed and EM-centralized ESM

Description:

a) The ESM-related state attribute esSwitch is used by IRPManager to switch on / off the ESM functionality, in the distributed and EM-centralized architectures. This attribute has two possible values: On, Off. It can be set at the sub-network level and at the eNodeB level;

b) The ESM-related state attribute isChangeForEnergySavingAllowed is used by IRPManager to prohibit or allow configuration changes of cells individually, within a eNodeB / sub-network, for ESM purposes by the IRPAgent. This attribute has two possible values: Yes, No.

c) The ESM-related state attribute esState is used to reflect the actual status of a cell regarding the energy saving. This attribute has two possible values: isEnergySaving, isNotEnergySaving.

Figure C-2 describes the following state transitions:

1) Transition from (esSwitch = On and isChangeForEnergySavingAllowed = Yes and esState = isNotEnergySaving) to((esSwitch = On and isChangeForEnergySavingAllowed = Yesand esState = isEnergySaving): happens when:

ES Policies attached to the subject cell and to candidate for compensation cells, e.g. threshold and duration, are satisfied and allow entering Energy Saving state.

2) Transition from (esSwitch = On and isChangeForEnergySavingAllowed = Yes and esState = isEnergySaving) to(esSwitch = On and isChangeForEnergySavingAllowed = Yes and esState = isNotEnergySaving): happens when:

ES Policies attached to the subject cell and to candidate for compensation cells, e.g. threshold and duration, are satisfied and allow leaving Energy Saving state.

3) Transition from (esSwitch = On and isChangeForEnergySavingAllowed = Yes) to (esSwitch = On and isChangeForEnergySavingAllowed = No and esState = isNotEnergySaving): happens when:

IRP Manager sets the attribute isChangeForEnergySavingAllowed to “No”.

4) Transition from (esSwitch = On and isChangeForEnergySavingAllowed = No and esState = isNotEnergySaving) to isChangeForEnergySavingAllowed = Yes: happens when:

IRP Manager sets the attribute isChangeForEnergySavingAllowed to “Yes”.

5) Transition from (esSwitch = On and isChangeForEnergySavingAllowed = Yes) to( esSwitch = Off and isChangeForEnergySavingAllowed = Yes and esState = isNotEnergySaving): happens when:

IRP Manager sets the attribute esSwitch to “Off”.

6) Transition from (esSwitch = Off and isChangeForEnergySavingAllowed = Yes and esState = isNotEnergySaving) to (esSwitch = On and isChangeForEnergySavingAllowed = Yes and esState = isNotEnergySaving): happens when:

IRP Manager sets the attribute esSwitch to “On”.

7) Transition from (esSwitch = On and isChangeForEnergySavingAllowed = No and esState = isNotEnergySaving) to (esSwitch = Off and isChangeForEnergySavingAllowed = No and esState = isNotEnergySaving): happens when:

IRP Manager sets the attribute esSwitch to “Off”.

8) Transition from (esSwitch = Off and isChangeForEnergySavingAllowed = No and esState = isNotEnergySaving) to (esSwitch = On and isChangeForEnergySavingAllowed = No and esState = isNotEnergySaving): happens when:

IRP Manager sets the attribute esSwitch to “On”.

Annex D (informative):
Change history

Change history

Date

TSG #

TSG Doc.

CR

Rev

Subject/Comment

Old

New

2010-03

SA#47

SP-100053

Presentation to SA for Information and Approval

1.0.0

2010-03

Publication of SA approved version

1.0.0

9.0.0

2010-09

SA#49

SP-100491

001

Remove targets based on not supported by measurements

9.0.0

9.1.0

2010-12

SA#50

SP-100858

003

1

Correcting the support qualifiers of SONControl attributes

9.1.0

9.2.0

2010-12

SA#50

SP-100749

005

Disambiguate and correct the description of SON Targets hierarchy

9.1.0

9.2.0

2010-12

SA#50

SP-100833

002

3

Allow EM centralized architecture for Hand-over parameter optimization – Align with 32.500

9.2.0

10.0.0

2010-12

SA#50

SP-100866

004

3

Adding NRM for Energy Saving Management policies and ESM switch

9.2.0

10.0.0

2011-01

Correction of misimplementation of CR in clause 5.3.2.3 and CR history correction.

10.0.0

10.0.1

2011-03

SA#51

SP-110098

010

2

Introducing RACH optimization management

10.0.1

10.1.0

2011-03

SA#51

SP-110098

011

Rapporteur clean-up for editorial errors

10.0.1

10.1.0

2011-03

SA#51

SP-110100

013

3

Use ESPolicies also for EM centralized architecture

10.0.1

10.1.0

2011-03

SA#51

SP-110100

014

Correct cardinality of ESPolicies

10.0.1

10.1.0

2011-03

SA#51

SP-110097

016

Add a new attribute into SONControl object class to switch on/off Cell Outage Compensation – Align with 32.541

10.0.1

10.1.0

2011-06

SA#52

SP-110284

018

1

Finalization of Rel-10 SON functionalities

10.1.0

10.2.0

2011-06

SA#52

SP-110284

066

2

Add parameters to control Mobility Robustness Optimization

10.1.0

10.2.0

2011-09

SA#53

SP-110634

066a

1

Add PM for Inter-RAT MRO

10.2.0

11.0.0

2011-12

SA#54

SP-110718

068

1

Adding definition of SON coordination

11.0.0

11.1.0

2011-12

SA#54

SP-110721

071

1

Correction MRO management of HO Trigger

11.0.0

11.1.0

2012-06

SA#56

SP-120364

078

1

Adding coordination use case among CCO, COC and ESM

11.1.0

11.2.0

2012-06

SA#56

SP-120358

087

Remove the EUTRANRelationSON in the UML

11.1.0

11.2.0

2012-06

SA#56

SP-120364

088

1

Add SON Coordination use case between SON functions below Itf-N and CM operations over Itf-N

11.1.0

11.2.0

2012-06

SA#56

SP-120364

091

2

Common SON coordination solution

11.1.0

11.2.0

2012-06

SA#56

SP-120371

092

1

Add time period configuration to allow inter-RAT energy saving

11.1.0

11.2.0

2012-09

SA#57

SP-120645

096

2

Remove Inter-RAT ES restriction for esNotAllowedTimePeriod

11.2.0

11.3.0

2012-09

SA#57

SP-120645

098

2

Correct candidateCellLoadParameters

11.2.0

11.3.0

2012-09

SA#57

SP-120573

103

Add support for Inter-RAT Energy Saving Management

11.2.0

11.3.0

2012-09

SA#57

SP-120567

105

Move SON coordination concept description to TS 32.521

11.2.0

11.3.0

2012-09

SA#57

SP-120567

107

1

Coordination between ES and cell compensation

11.2.0

11.3.0

2012-09

SA#57

SP-120567

108

3

Change description of Coordination between SON functions below Itf-N and CM operations over itf-N

11.2.0

11.3.0

2012-09

SA#57

SP-120567

109

2

Enhancement of general SON coordination solutions

11.2.0

11.3.0

2012-09

SA#57

SP-120567

110

2

Add examples of how to use general SON coordination solutions

11.2.0

11.3.0

2012-12

SA#58

SP-120791

111

2

Correcting function name

11.3.0

11.4.0

SP-120783

114

Clean-up changes

SP-120791

115

2

Further enhancement of general SON coordination solutions

SP-120791

117

2

Add description for Coordination between SON functions below Itf-N and non-SON operations over Itf-N

SP-120791

119

2

Add conflict detection for general SON coordination solutions

SP-120800

120

5

Add load threshold parameters to Inter-RAT energy saving policy

SP-120791

125

1

Coordination between COC and ANR

SP-120791

126

1

Coordination between HOO and LBO

SP-120791

127

1

Add relationship diagram for SON coordination

SP-120783

128

3

Addition of probing state and its control for Energy Saving

SP-120800

131

Enhance esNotAllowedTimePeriod text description to fulfil energy saving allowed or prohibited for an EUTRAN cell

2013-03

SA#59

SP-130056

104

7

SON Coordination NRMs

11.4.0

11.5.0

SP-130048

132

2

Add informative annex on Distributed ES State Management

SP-130056

133

2

Add coordination example based on cell state

2013-03

Editorial correction of the spec title

11.5.0

11.5.1

2013-06

SA#60

SP-130266

134

1

Correction of attribute constraints

11.5.1

11.6.0

SP-130266

135

1

Remove EUtranRelationSON in UML diagram

SP-130304

136

1

Correcting error in attribute constraint

SP-130304

139

Correct the attribute constraint of energySavingControl

2013-06

Fixes typo in history table

11.6.0

11.6.1

2013-09

SA#61

SP-130439

142

1

Add missing Object class id for SONPolicy IOCs

11.6.1

11.7.0