LPDHT: a locality-aware and partitioned-space architecture for peer-to-peer SIP

Authors:
Wei Mi;Chunhong Zhang;Xiaofeng Qiu;Lichun Li;Yan Wang;Yang Ji
Affiliations:
Telecommunication Engineering Department, Beijing University of Posts and Telecommunications, Beijing, P.R. China;Telecommunication Engineering Department, Beijing University of Posts and Telecommunications, Beijing, P.R. China;Telecommunication Engineering Department, Beijing University of Posts and Telecommunications, Beijing, P.R. China;Telecommunication Engineering Department, Beijing University of Posts and Telecommunications, Beijing, P.R. China;Telecommunication Engineering Department, Beijing University of Posts and Telecommunications, Beijing, P.R. China;Telecommunication Engineering Department, Beijing University of Posts and Telecommunications, Beijing, P.R. China
Venue:
WiCOM'09 Proceedings of the 5th International Conference on Wireless communications, networking and mobile computing
Year:
2009

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Abstract

SIP is a signaling protocol widely used in multimedia communication. Recently, P2PSIP, which combines DHT and SIP, has been proposed to overcome the drawbacks of traditional CS SIP. Although P2PSIP has many advantages, the introduction of P2P also brings in some disadvantages in performance. And these disadvantages become unbearable in a huge P2PSIP overlay in Internet environment. To address these problems, we propose a novel DHT architecture for P2PSIP, LPDHT, whose full name is Locality-Aware and Partition-Space DHT. In the super nodes form P2PSIP, LPDHT can reduce not only DHT routing hop count and latency per DHT hop, but also the overall overhead. Therefore it can improve system capacity greatly. Performance analysis indicates that overall overhead are reduced dramatically in LPDHT.