Enhanced packet-based transmission of multirate signals over GERAN

Author

Liebl, Cünther ; Kaindl, Markus ; Xu, Wen

Author_Institution

Inst. for Commun. Eng., Munich. Univ. of Technol., Germany

Volume

3

fYear

2004

fDate

5-8 Sept. 2004

Firstpage

1812

Abstract

We will present an algorithm for enhanced AMR mode switching for VoIP over GERAN that takes into account abstract criteria like frame delay and packet loss rate at the application layer, as well as segmentation overhead at the data link layer. With the proposed algorithm in a wireless terminal, dynamic cross-layer optimization between the VoIP application and the radio network control can be achieved even if the peer codec is situated far away from the air interface. The performance improvements of the algorithm will be demonstrated for a typical GERAN scenario in terms of achieved speech quality, as well as resource consumption and utilization efficiency at the air interface.

Keywords

Internet telephony; cellular radio; packet radio networks; packet switching; radio access networks; radio links; GERAN; GSM-EDGE radio access network; VoIP; air interface; data link layer; dynamic cross-layer optimization; enhanced AMR mode switching; multirate signal; packet-based transmission; packet-switched radio bearer; peer codec; radio network control; resource consumption; resource utilization efficiency; speech quality; wireless terminal; Bit rate; Delay; Frequency; Packet switching; Payloads; Radio control; Radio network; Sampling methods; Speech codecs; Streaming media;

fLanguage

English

Publisher

ieee

Conference_Titel

Personal, Indoor and Mobile Radio Communications, 2004. PIMRC 2004. 15th IEEE International Symposium on

Print_ISBN

0-7803-8523-3

Type

conf

DOI

10.1109/PIMRC.2004.1368312

Filename

1368312