Network functions for the application of multi-rate speech coding in digital cellular systems

Author

Yasuda, Syuji ; Uramoto, Koji ; Murase, Atushi

Author_Institution

NTT Mobile Commun. Network Inc., Musashino, Japan

fYear

1994

fDate

8-10 Jun 1994

Firstpage

306

Abstract

Multi-rate speech coding is a considerable subject in digital cellular systems using highly efficient speech coding methods. The paper describes network functions for the application of the multi-rate speech coding network. As an example of multi-rate coding, functions of a half rate speech coding method in personal digital cellular (PDC) systems are mainly discussed. One of the functions is a codec bypassed connection control to reduce the degradation of voice quality in communication from a mobile station to a mobile station. We propose speech coding negotiation schemes between the originating and terminating MS for the codec bypassed connection control. We also propose a non-voice service connection control scheme which is necessary to provide non-voice services with the same quality as a full rate coding

Keywords

cellular radio; digital radio; speech codecs; speech coding; telecommunication control; codec bypassed connection control; half rate speech coding method; multi-rate speech coding; network functions; non-voice service connection control; personal digital cellular systems; speech coding negotiation schemes; voice quality; Cellular networks; Codecs; Communication system control; Degradation; Intelligent networks; Mobile communication; Multiaccess communication; Speech coding; Time division multiple access; Transfer functions;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 1994 IEEE 44th

Conference_Location

Stockholm

ISSN

1090-3038

Print_ISBN

0-7803-1927-3

Type

conf

DOI

10.1109/VETEC.1994.345115

Filename

345115