The Mobile Broadband Standard
SA4 - Codec

 

SA WG4 Codec deals with the specifications for speech, audio, video, and multimedia codecs, in both circuit-switched and packet-switched environments. Other topics within the mandate of SA WG4 are: quality evaluation, end-to-end performance, and interoperability aspects with existing mobile and fixed networks (from codec point of view).

 

Terms of reference

 

The latest terms of reference were approved at SA WG4#1 in document ToR_SA4.

 

The responsibilities of SA WG4 (Codec) include the following items:

 

  • Development and maintenance of specifications for speech, audio, video, and multimedia codecs, as required to enable services specified for 3G terminals and systems.
  • Guidance to other 3GPP groups concerning required QoS parameters and other system implications, including channel coding requirements, imposed by different multimedia codecs in both circuit-switched and packet-switched environments.
  • Speech, audio, video, and multimedia quality evaluation (including new evaluation methods, testing, verification, characterisation, selection criteria)
  • End-to-end performance, including terminal characteristics, of speech, audio, video, and multimedia services.
  • Interoperability aspects with existing mobile and fixed networks from the codec point of view.

 

In conducting its work, the Codec WG will strive to specify the best possible technical solutions at the same time as considering the planned global use of the codecs and the flexibility needs imposed by different regional requirements and preferences, including possible differences in quality/capacity trade-offs.

 

Useful links and information

About SA WG4 List of elected officials
Documents Meeting documents
  Specifications
  Work items
Meetings Next meeting information & previous meeting reports and documents
  Liaisons Statements
  Full SA WG4 meeting calendar
General info Email exploder lists
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SA Working groups and Ad Hoc groups 
TSG SA Plenary  
TSG SA WG1 Services
TSG SA WG2 Architecture
TSG SA WG3 Security
TSG SA WG4 Codec
TSG SA WG5 Telecom Management
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