The VoLTE (Voice Over LTE) Ecosystem Technology Evolution, Opportunities, Challenges, Strategies & Forecasts 2015 - 2030

VoLTE (Voice over LTE) technology allows a voice call to be placed over an LTE network, enabling operators to reduce reliance on legacy circuit-switched networks. Powered by IMS (IP Multimedia Subsystem) architecture, VoLTE brings a host of benefits to mobile operators ranging from the ability to refarm legacy 2G and 3G spectrum to offering their subscribers a differentiated service experience through capabilities such as HD voice and video telephony.

First deployed by South Korean operators in 2012, VoLTE is beginning to gain momentum globally. As of Q3’2015, more than 20 operators have commercially launched VoLTE services and several roaming and interoperability agreements are already in place.

SNS Research estimates that VoLTE service revenue will grow at a CAGR of 36% between 2015 and 2020. By the end of 2020, VoLTE subscribers will account for nearly $120 Billion in revenue. Although traditional voice services will constitute a major proportion of this figure, over 12% of the revenue will be driven by video calling and supplementary services.

The “VoLTE (Voice over LTE) Ecosystem: 2015 – 2030 – Opportunities, Challenges, Strategies & Forecasts” report presents an in-depth assessment of the VoLTE ecosystem including enabling technologies, key market drivers, challenges, collaborative initiatives, regulatory landscape, standardization, opportunities, operator case studies, future roadmap, value chain, ecosystem player profiles and strategies. The report also presents forecasts for VoLTE smartphone shipments, subscriptions, service revenue and infrastructure investments from 2015 till 2030. The forecasts cover 7 individual submarkets and 6 regions.

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The report comes with an associated Excel datasheet suite covering quantitative data from all numeric forecasts presented in the report.

1 Chapter 1: Introduction 12
1.1 Executive Summary 12
1.2 Topics Covered 13
1.3 Historical Revenue & Forecast Segmentation 14
1.4 Key Questions Answered 15
1.5 Key Findings 16
1.6 Methodology 17
1.7 Target Audience 18
1.8 Companies & Organizations Mentioned 19

2 Chapter 2: An Overview of VoLTE 21
2.1 What is VoLTE? 21
2.2 Architectural Evolution of VoLTE 21
2.2.1 CSFB (Circuit-Switched Fallback): The First Step Towards VoLTE 21
2.2.2 The Push From CDMA Operators 22
2.2.3 Towards an IMS Based VoLTE Solution 23
2.2.4 SRVCC (Single Radio Voice Call Continuity) 24
2.2.5 Integrating Video Telephony 25
2.3 Key Enabling Technologies 25
2.3.1 VoLTE Infrastructure 25
2.3.1.1 IMS Core: CSCF, HSS, BGCF & MGCF 26
2.3.1.2 VoLTE Application Servers 27
2.3.1.3 SBC (Session Border Controller) 27
2.3.1.4 MRF (Media Resource Function) 27
2.3.1.5 PCRF (Policy and Charging Rules Function) 27
2.3.2 VoLTE Devices 28
2.3.3 Roaming & Interconnection Technology 29
2.3.3.1 LBO (Local Breakout) 29
2.3.3.2 S8HR (S8 Home Routing) 29
2.4 Market Growth Drivers 30
2.4.1 Spectral Efficiency & Cost Reduction 30
2.4.2 Enabling HD Voice, Video Calling & Rich IP Communications 30
2.4.3 Improved Battery Life 31
2.4.4 Integration with WiFi: Enhanced Indoor Voice Coverage 31
2.4.5 Bundling Voice with Other Services 31
2.4.6 Fighting the OTT Threat 32
2.5 Market Barriers 32
2.5.1 Initial Lack of Compatible Devices 32
2.5.2 Roaming & Interconnect Issues 33
2.5.3 Limited Revenue Potential 33
2.5.4 Service Assurance Challenges 33

3 Chapter 3: Collaboration, Standardization & Regulatory Landscape 35
3.1 3GPP (3rd Generation Partnership Project) 35
3.1.1 Release 8 35
3.1.2 Release 9 35
3.1.3 Release 10 36
3.1.4 Release 11 36
3.1.5 Release 12, 13 & Beyond 36
3.2 GSMA 37
3.2.1 Feature Requirements 37
3.2.1.1 IR.92: IMS Profile for Voice and SMS 37
3.2.1.2 IR.94: IMS Profile for Conversational Video Service 37
3.2.2 Roaming, Interworking & Other Guidelines 38
3.2.2.1 IR.64: IMS Service Centralization & Continuity Guidelines 38
3.2.2.2 IR.65: IMS Roaming & Interworking Guidelines 38
3.2.2.3 IR.88: LTE Roaming Guidelines 38
3.3 VoLTE Interworking Technology Consultation Group, Korea 39

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