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TS 28.627
Self-Organizing Networks (SON) Policy NRM IRP –
Requirements

3GPP‑Page   ETSI‑search   fToC↓   Partial Content →
V19.0.0 (PDF)  2025/09  38 p.
V18.0.0  2024/03  38 p.
V17.0.0  2022/03  38 p.
V16.0.0  2020/06  38 p.
V15.0.0  2017/12  38 p.
V14.0.0  2017/03  36 p.
V13.2.1  2017/03  36 p.
V12.1.0  2016/03  28 p.
V11.2.0  2016/03  28 p.
Rapporteur:
Ms. Zou, Lan
Huawei Tech.(UK) Co. Ltd

full Table of Contents for  TS 28.627  Word version:  19.0.0

each clause number in 'red' refers to the equivalent title in the Partial Content
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0Introduction  p. 5
1Scope  p. 6
2References  p. 6
3Definitions and abbreviations  p. 6
3.1Definitions  p. 6
3.2Abbreviations  p. 7
4Concepts and background  p. 7
4.1Overview  p. 7
4.2Self-Optimization Concept  p. 9
4.2.1Logical Function Blocks  p. 9
4.2.1.1Self-Optimization Input Monitoring Function (SO_MON_F)  p. 9
4.2.1.2Triggering Optimization Function (TG_F)  p. 9
4.2.1.3Optimization Fallback Function (O_FB_F)  p. 9
4.2.1.4Self-Optimization Progress Update Function (SO_PGS_UF)  p. 9
4.2.1.5NRM IRP Update Function (NRM_UF)  p. 9
4.2.1.6Self-Optimization Monitoring and Management Function (SO_MMF)  p. 9
4.2.1.6.1Self-Optimization Monitoring and Management Function (SO_MMF_NM)  p. 9
4.2.1.6.2Self-Optimization Monitoring and Management Function (SO_MMF_EM)  p. 9
4.2.1.7Load Balancing Function (LB_F)  p. 10
4.2.1.8Interference Control Function (IC_F)  p. 10
4.2.1.9Coverage and Capacity Function (CC_F)  p. 10
4.2.1.10RACH Optimization Function (RACH_F)  p. 10
4.2.1.11HandOver Optimization Function (HO_F)  p. 10
4.2.1.12NM centralized Coverage and Capacity Function (CC_F_NM)  p. 10
4.2.1.13Self-Optimization for AAS Function (SO_AAS_F)  p. 10
4.3SON Coordination Concepts  p. 10
5Business level requirements  p. 11
5.0General  p. 11
5.1Requirements  p. 11
5.1.1Self-Optimization Monitoring and Management  p. 11
5.1.2Load Balancing  p. 11
5.1.3 Handover (HO) Parameter optimization  p. 12
5.1.4 Interference control  p. 12
5.1.5 Coverage and Capacity optimization  p. 12
5.1.6 RACH optimization  p. 12
5.1.7SON Coordination  p. 12
5.1.8Active Antenna System (AAS) management  p. 13
5.2 Actor roles  p. 13
5.3 Telecommunications Resources  p. 13
5.4 High-Level use case  p. 13
5.4.1 Load Balancing  p. 13
5.4.2 Interference control  p. 15
5.4.3 Coverage and capacity optimization  p. 16
5.4.4NM centralized Coverage and Capacity Optimization  p. 18
5.4.4.0General  p. 18
5.4.4.1Use case 1: Cell coverage adapting to traffic demand  p. 18
5.4.4.2Use case 2: Coverage and accessibility  p. 18
5.4.4.3Use case 3: LTE coverage holes with underlaid UTRAN/GERAN  p. 18
5.4.4.4Use case 4: LTE Connection failure  p. 19
5.4.4.5Use case 5: Radio link quality  p. 21
5.4.5SON for AAS  p. 21
5.4.5.1General  p. 21
5.4.5.2Use case 1: Cell splitting  p. 21
5.4.5.3Use case 2: Cell Merging  p. 22
5.4.5.4Use case 3: Cell Shaping  p. 22
6 Specification level requirements  p. 23
6.1Requirements  p. 23
6.1.1Self-Optimization Monitoring and Management  p. 23
6.1.1.1Management Part  p. 23
6.1.2Load Balancing  p. 23
6.1.3Handover (HO) Parameter optimization  p. 23
6.1.3.1HO failure categorization  p. 23
6.1.3.1.1HO failures due to too late and too early HO triggering  p. 23
6.1.3.2Reducing inefficient use of network resources due to unnecessary HOs  p. 25
6.1.3.3Requirements  p. 26
6.1.4 Interference control  p. 26
6.1.5 Coverage and capacity optimization  p. 26
6.1.6 RACH optimization  p. 26
6.1.7SON Coordination  p. 26
6.1.8NM centralized coverage and capacity optimization  p. 27
6.1.9AAS management  p. 27
6.2 Actor roles  p. 27
6.3 Telecommunications Resources  p. 28
6.4Use case  p. 28
6.4.1Use case Self-Optimization Monitoring and Management  p. 28
6.4.2Use case Load Balancing Allowed/Prohibited Management  p. 28
6.4.3Use case NM centralized Coverage and Capacity Optimization  p. 30
7Functions and Architecture  p. 31
7.1Self-Optimization Logical Architecture  p. 31
7.2Self-Optimization Reference Model  p. 31
ASteps for SON self-optimization Technical Specifications  p. 33
BGeneral descriptions related to NM centralized CCO high level use cases  p. 34
B.1General  p. 34
B.2Monitoring of UE distribution  p. 35
$Change History  p. 37

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