Browse > Article

Dynamic Redundant Audio Transmission for Packet Loss Recovery in VoIP Systems  

권철홍 (대전대학교 컴퓨터·정보통신공학부)
김무중 ((주)언어과학 음성공학연구소)
Abstract
In ITU H.323 teleconference system, the RTP/RTCP protocol is offered to transfer real-time multimedia stream. Both sender and receiver hate experience in packet loss and jitter which result from network congestion over Internet. Audio quality over Internet depends on the number of lost packets and on jitter between successive packets. The goal of our study is to improve the speech quality over Internet by checking the packet loss characteristics of the network and adopting the but for control management mechanism at the receiver. We suggest a dynamic redundant audio transmission mechanism which examines the packet loss rate and uses the feedback information through RTCP.
Keywords
VoIP; QoS; RTP/RTCP; Redundant audio transmission;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Real-time Voice over packet-switched network /
[ T. J. Kostas;T. J. Kostas;M. S. Borella;I. Sidhu;G. M. Shustor;J. Grabiec;J. Mahler ] / IEEE Network   DOI   ScienceOn
2 Telephony in the year 2005 /
[ J. Rinde ] / Computer Networks   DOI   ScienceOn
3 Voice over IP network design /
[ J. Davidson ] / CCIE '98, Cisco system
4 /
[ Packet-Based Multimedia Communication System ] / ITU-T Rec. H.323
5 /
[ W. Stevens ] / TCP Illustrated,Ⅰ
6 /
[ AVT Working Group ] /
7 /
[ Vocaitec Communication ] /
8 Implementation of the real-time speech communication over the Korean Internet and quality assessment tests /
[ D. S. Ko;J. S. Park ] / Proceedings of ICSP 97
9 PSTN/IP gateways and switches workshop /
[ P. Granstorm ] / Voice on the Net '99, Ericsson, Erisson
10 /
[ O. Hersent ] / IP Telephony : Packet-Based Multimedia Communication System