Using P2P Overlay to Improve VoIP Quality in SIP+P2P System

摘要：

The Current Internet provides a Best-effort service, which can not satisfy service quality guarantees that VoIP systems often require. Systems such as multi-homing and overlay network leverage path diversity that Internet inherently has to enhance end-to-end application performance. In this paper, we propose a P2P overlay approach, which is used to transmit media stream in SIP+P2P system. SIP+P2P is a Peer-to-Peer VoIP system, which leverages potential path diversity provided by P2P overlay to enhance VoIP quality. Firstly, we propose a path selection mechanism to ensure that end-to-end paths have a high degree of diversity. Then we develop an effective path switching mechanism based on P2P overlay, including path quality evaluation, predicting, and application-driven path switching. Finally, we evaluate our design on our SIP+P2P testbed, and prove that our path selection can explore high path diversity and that path switching can improve VoIP quality effectively.

关键词： SIP+P2P service quality P2P overlay path selection path switching.

作者: Xiuwu ZHANG Weimin LEI Bo YU Junying JIA

作者单位: Department of Computer Science and Technology University of Science and Technology of China Hefei, C Networks and Communication Laboratory Shenyang Institute of Computer Technology Shenyang, China

会议类型: 国际会议

会议名称: 2009 WASE International Conference on Information Engineering(2009年国际信息工程会议)(ICIE 2009)

会议地点: 太原

会议语种:英文

页码: 255-259

在线出版日期: 2009-07-10（万方平台首次上网日期，不代表论文的发表时间）