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Most P2P applications require to elect some supernodes(SN) from the peers to improve the performance, so the supernode election has become an important issue in such systems. To our best knowledge, most applications assume that nodes with enough bandwidth and powerful computation, having a public IP address can become SNs, but this strategy may have some disadvantages e.g. SNs may be clustered into...
Application relay is important for many delay-sensitive applications such as voice over Internet protocol (VoIP). It has been proved that relay selection would be optimized considering autonomous domains (ASes) relationship. We describe a new method for relay selection using service discovery in distributed hash table(DHT) in which relay service advertisements are indexed and clustered according to...
SIP (Session Initiation Protocol) is a signaling protocol widely used in multimedia communication. Recently, P2PSIP (Peer-to-Peer SIP), which combines DHT (distributed hash table) and SIP, has been proposed to overcome the drawbacks of traditional CS SIP (client/server architecture SIP). However, the introduction of DHT increases the registration overhead and, session setup overhead/latency. These...
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