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BU-Chord Mechanism for Reliable P2P File Sharing over MANET  

Jeong Hong-Jong (경북대학교 컴퓨터공학과 이동인터넷망 연구실)
Song Jeom-Ki (경북대학교 컴퓨터공학과 이동인터넷망 연구실)
Kim Dong-Kyun (경북대학교 컴퓨터공학과 이동인터넷망 연구실)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.31, no.4B, 2006 , pp. 333-343 More about this Journal
Abstract
MANET and P2P applications have a common nature that they don't have any fixed infrastructures that might maintain network topologies. With such common characteristics, a P2P application can be a killer application over MANET. Due to absence of reliable node which serves indexing services in MANET, fully distributed P2P applications are more suitable for MANET. By using DHT like Chord, we can save network bandwidth and avoid a point of failure of a directory server. However, since MANET allows nodes to depart from network freely, P2P file sharing applications using Chord lookup protocol should address how to recover the keys stored at the departed node. In this paper, we propose BU-Chord in order to detect and recover the departure of nodes by creating and storing backup file information in distributed manner. Our BU-Chord shows off better performance than existing Chord especially in case of high departure rate of nodes.
Keywords
MANET; P2P; DHT; Chord;
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