自己管理ネットワーク（SON）導入と運用：モバイルネットワーク運用企業向けの分析及び事例（Implementing and Operating Self-organizing Networks (SON): Analysis and Case Studies for Mobile Network Operators）...市場調査レポートについてご紹介

1.0 EXECUTIVE SUMMARY 4
2.0 INTRODUCTION 6
2.1 SELF ORGANIZING NETWORKS ECONOMIC BENEFITS 11
2.1.1 NETWORK AUTOMATION 11
2.1.2 ENERGY SAVING 12
2.1.3 LOWER EQUIPMENTS 12
2.2 MARKET DRIVERS FOR SON 12
3.0 IMPLEMENTING SELF ORGANIZING NETWORKS 14
3.1 SON ARCHITECTURE 14
3.2 IMPLEMENTATION CASES 16
3.2.1 FIRST SCENARIO: EXISTING NETWORK 16
3.2.2 SECOND SCENARIO: GREENFIELD 19
3.2.3 THIRD SCENARIO: DEPLOY PRIOR TO LTE 20
3.2.4 FOURTH SCENARIO: DEPLOY/UPGRADE EPC WITHOUT LTE 22
3.3 FUTURE TRENDS 22
3.3.1 LOAD BALANCING IN SON 23
3.3.2 MOBILITY ROBUSTNESS OPTIMIZATION (MRO) 24
3.3.3 ANTENNA PARAMETERS AND COST REDUCTION AND ANTENNA TILT 25
3.3.4 ELECTRICAL TILT 28
3.3.5 MECHANICAL TILT 29
3.3.6 INSTALLING ANTENNA TILT AND ITS PARAMETERS 31
4.0 FEASIBILITY STUDY ON THE INSTALLATION OF SON OPERATIONS 32
4.1 PLANNING THE NETWORK 32
4.1.1 AUTOMATIC NEIGHBOR RELATIONS 32
4.2 OPTIMIZATION 33
4.2.1 NETWORK AUTOMATION 33
4.2.1 FAULT MANAGEMENT 34
4.3 AUTOMATED ANALYSIS 34
4.3.1 SELF CONFIGURATION 35
4.3.2 SELF OPTIMIZATION 35
4.3.3 SELF HEALING 35
4.3.4 SELF HEALING CHALLENGING 36
4.3.5 CELL OUTAGE DETECTION 36
4.4 CASE STUDY: THE RETURN ON INVESTMENT (ROI) 37
4.5 RECOMMENDATIONS ON INSTALLING SON AND LTE OPERATIONS 38
5.0 OPERATIONAL CHALLENGES VS BENEFITS 40
5.1 DELAY IN SON 40
5.1.1 TRANSITION PROCESS CHALLENGES 40
5.1.2 LOWER HUMAN INTERACTION 42
5.1.3 MORE AUTOMATED NETWORKS 42
5.2 OTHER TECHNICAL CHALLENGES 42
6.0 CALCULATING THE COST OF SON 45
6.1 SAVINGS 45
6.1.1 BENEFITS 45
6.1.2 OPERATIONAL BENEFITS 46
6.1.3 FUTURE BENEFITS 46

Figure 1 SON Use Cases 10
Figure 2 Antenna Tilt 27
Figure 3 Antenna Tilt Parameters 27
Figure 4 Electrical Tilt 29
Figure 5 Mechanical Tilt 30
Figure 6 SON Operational case 41