DocumentCode
1222916
Title
VoIP Scheduling Algorithm for AMR Speech Codec in IEEE 802.16e/m System
Author
Oh, Sung-Min ; Cho, Sunghyun ; Kim, Jae-Hyun ; Kwun, Jonghyung
Author_Institution
Sch. of Electr. & Comput. Eng., Ajou Univ., Suwon
Volume
12
Issue
5
fYear
2008
fDate
5/1/2008 12:00:00 AM
Firstpage
374
Lastpage
376
Abstract
This letter proposes an efficient uplink scheduling algorithm for voice over Internet protocol (VoIP) services with adaptive multi-rate (AMR) speech codec in IEEE 802.16e/m systems. The proposed scheduling algorithm adopts the random access scheme during silent-period to reduce the waste of uplink bandwidth considering the characteristics of AMR speech codec. The numerical results show that the proposed algorithm can increase the maximum supportable number of voice users by 26% compared to the conventional extended real-time polling service (ertPS).
Keywords
Internet telephony; WiMax; scheduling; speech codecs; IEEE 802.16e/m system; VoIP scheduling algorithm; adaptive multirate speech codec; random access scheme; uplink bandwidth; uplink scheduling algorithm; Bandwidth; Bit rate; Code standards; Internet telephony; Quality of service; Research and development; Scheduling algorithm; Speech codecs; Standards development; Standards publication;
fLanguage
English
Journal_Title
Communications Letters, IEEE
Publisher
ieee
ISSN
1089-7798
Type
jour
DOI
10.1109/LCOMM.2008.072098
Filename
4524245
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