IMS Multimedia Telephony over Cellular Systems VoIP Evolution in a Converged Telecommunication World

by Chakraborty, Shyam; Peisa, Janne; Frankkila, Tomas; Synnergren, Per

• ISBN13: 9780470058558
• ISBN10: 0470058552
• Edition: 1st
• Format: Hardcover
• Copyright: 2007-03-12
• Publisher: WILEY

Summary

IMS Multimedia Telephony service has been standardized in 3GPP as the replacement of the circuit switched telephony service in cellular networks. The multimedia telephony service consists of several service components such as voice, video and text. 'IMS Multimedia Telephony over Cellular Systems' provides a comprehensive overview of the service that will enable enriched telephony for mobile users. Enriched telephony fulfils the user's desire to communicate in new ways, for example by sharing pictures and video clips. In addition to an overview of the Multimedia Telephony service, the book focuses on the modern media processing methods, which allows the quality of the packet switched voice and video telephony not only to match but also possibly exceed the quality of circuit switched telephony. Such key components as adaptive jitter buffering and adaptation of conversational media are explained in detail. Key features: Detailed description of how Multimedia Telephony sessions are set-up and controlled Analysis showing the capacity and quality of VoIP and Multimedia Telephony in cellular networks Coverage of other IMS services such as PoC specified by 3GPP and OMA Description of suitable QoS and radio bearers for Multimedia Telephony Explanation of the modern radio interface, especially High Speed Packet Access, which is based on concepts such as link adaptation and fast hybrid ARQ The possibilities for the current and future standards covered in this book make it an indispensable resource for engineers, designers and researchers in VoIP, telecommunication companies and universities teaching and conducting research in telecommunications. It will also be of interest to managers needing an in-depth knowledge of the engineering and key issues of this complex technology, and students aspiring to develop a career in this area.

Author Biography

Shyam Chakraborty (PhD) has worked at Ericsson Corporate Research in Finland since 2005.  Before this, he was the Academy Research Fellow, Academy of Finland, at the Communications Laboratory, Dept. of ECE, Helsinki University of Technology.

Tomas Frankkila works as a Research Scientist at Ericsson in Sweden, and has published papers on wireless communications.

Janne Peisa (PhD) is a Section Manager at Ericsson in Finland, and has published many conference papers in the field of WCDMA and 3G.

Per Synnergren (PhD) works as a Senior Research Engineer for Ericsson in Sweden, performing research and standardization in the area of IP based services and media transported over a wireless link (focusing on IMS based services and 3GPP wireless access networks).

Table of Contents

Preface

Acknowledgments

Glossary

Introduction

Convergence of Networking Paradigms

IMS and the IMS Multimedia Telephony Service

Requirements and Challenges

Outline of This Book

The Multimedia Telephony Communication Service

Benefits with IMS

IMS Communication Services

AnIMS Application Example

Multimedia Telephony Service Scenario

Summary of the Multimedia Telephony Communication Service

Network Architecture and Service Realization

Public Switched Telephone Network and Integrated Service Digital Network

Data Networks and the Internet

Internet Protocol Architecture

The Internet

Internet Protocol

Cellular Systems

Radio Access

Radio Access Evolution

Core Network

Quality of Service

QoSAttributes

The IP Multimedia Subsystem

The Home Subscriber Server and the Subscription Location Function

The Call/Session Control Functions

Proxy-CSCF

Serving-CSCF

Interrogating-CSCF

The Application Servers

The Multimedia Resource Function

PSTNInterworking Functions

IPv4/IPv6Interworking Functions

Charging

Policyand Charging Control

Home and Visited Domains

The TISPAN Next Generation Network

Multimedia Telephony Realization

Core Network and Service Layer Realization

Outline of a Radio Bearer Realization

Session Control

SIP

Logical Entities

IMSRegistration

IMSSession Establishment

Signaling Compression

Controlling QoS

GPRS Session Management Signaling

Policy Control Signaling

Establishment of Multimedia Telephony Sessions

Using Mobile Terminal Initiated QoS

Using Network Initiated QoS

Modification of Multimedia Telephony Sessions

The SIPINVITE Method

The SIPUPDATE Method

Release of Multimedia Telephony Sessions

Supplementary Services

Communication Diversion

Conference

Message Waiting Indication

Originating Indication Presentation/Restriction

Terminating Indication Presentation/Restriction

Communication Hold

Communication Barring

Explicit Communication Transfer

Communication Diversion: Communication Forwarding on Mobile Subscriber Not Reachable

Interworking with CS Networks

Media Flow

Media Coding

Speech

Video

Text

Protocols

Real-Time Transport Protocol

Speech

Video

Text

SDP

Media Transport Processing

Definition

Jitter as a Characteristic of PS transport

Speech Transport Processing - Jitter

Speech Transport Processing - Packet Loss Concealment

Video Transport Processing

Media Control

End-to-End Adaptation

User Induced Session Adaptation

Header Compression

Radio Realization

UMTS

EDGE

Other Networks

Example Delay Budget for HSPA

Interworking

Speech

Video

Text. 5

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