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Analyse The Capacity And Quality Of VoIP And Multimedia Telephony In Cellular Networks.


DUBLIN, Ireland -- Research and Markets (http://www.researchandmarkets.com/reports/c51217) has announced the addition of "IMS (1) See IP Multimedia Subsystem.

(2) (Information Management System) An early IBM hierarchical DBMS for IBM mainframes. IMS was widely implemented throughout the 1970s under MVS and continues to be used under z/OS.
 Multimedia Telephony over Cellular Systems: VoIP Evolution in a Converged Telecommunication World" to their offering.

IMS Multimedia Telephony service has been standardized in 3GPP GPP Government Performance Project
GPP General Purpose Processor
GPP General Physical Preparedness
GPP Gambian People's Party
GPP Good Pharmacy Practice
GPP Gross Primary Productivity
GPP Green Procurement Program
GPP Generic Packetized Protocol
 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 See media control.  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 A flicker or fluctuation in a transmission signal or display image. The term is used in several ways, but it always refers to some offset of time and space from the norm. For example, in a network transmission, jitter would be a bit arriving either ahead or behind a standard clock cycle  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 (1) See Object Management Architecture.

(2) (Open Mobile Alliance Ltd., La Jolla, CA, www.openmobilealliance.org) An organization formed in June of 2002 by the consolidation of the WAP Forum group and the Open Mobile Architecture Initiative.
 

- 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 (Automatic Repeat reQuest) A method of handling communications errors in which the receiving station requests retransmission if an error occurs.

ARQ - Automatic Repeat Request
 

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 information

Shyam Chakraborty (PhD) has worked at Ericsson Corporate Research in Finland since 2005. Before this, he was the Academy Research Fellow, Academy of Finland The Academy of Finland (Finnish: Suomen Akatemia) is a governmental funding body for scientific research in Finland. It is based in the Finnish capital, Helsinki. Yearly, the Academy administers over 200 million euros to Finnish research activities. Over 3. , at the Communications Laboratory, Dept. of ECE ECE Electrical and Computer Engineering
ECE Economic Commission for Europe
ECE Ecole Centrale d'Electronique (France)
ECE Educational Credential Evaluators Inc
ECE East Central Europe
ECE Endothelin Converting Enzyme
, Helsinki University of Technology TKK redirects here. For other uses, see TKK (disambiguation).
Helsinki University of Technology is not to be confused with University of Helsinki.
Helsinki University of Technology (TKK) (Finnish: Teknillinen korkeakoulu; Swedish: Tekniska högskolan
.

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 (Wideband CDMA) A 3G high-speed digital data service provided by cellular carriers that use the TDMA or GSM technology worldwide, including AT&T (formerly Cingular) and T-Mobile in the U.S.  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).

Topics Covered:

-The Multimedia Telephony Communication Service

-Network Architecture and Service Realization

-Session Control

-Media Flow

-Security

-Performance

-Other IMS Communication Services

For more information, visit http://www.researchandmarkets.com/reports/c51217
COPYRIGHT 2007 Business Wire
No portion of this article can be reproduced without the express written permission from the copyright holder.
Copyright 2007, Gale Group. All rights reserved. Gale Group is a Thomson Corporation Company.

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Date:Feb 27, 2007
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