PChord: improvement on chord to achieve better routing efficiency by exploiting proximity

Routing efficiency is the critical issue when constructing peer-to-peer overlay. However, chord has often been criticized on its careless of routing locality. A peer-to-peer overlay, called PChord is illustrated in this paper which focuses on achieving better routing efficiency. PChord is constructed on the basis of chord which exploits proximity of the underly Internet by combining proximity routing into its routing scheme. The simulation shows that PChord has achieved lower RDP per message routing.