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This paper proposes a new authentication mechanism to meet the demand of security for P2P-SIP network. Based on an improved certificateless signature, it achieves mutual authentication through signal interaction between end to end users. From the analysis, this scheme has high performance for defending fabricating identity, tampering and counterfeiting message. It is efficient to hold back replay...
Peer-to-Peer (P2P) networking is beneficial when removing a centralized server. On the other hand, new mechanisms are required to compensate for the central authority, especially for network security and dependability. In this paper, we propose a new fuzzy reputation (Fuzzy-Rep) model to improve security and dependability of P2P e-commerce. The model employs fuzzy logic inference rules to assess transactions...
We consider subcarrier assignment and power allocation in OFDMA wireless mesh networks. Traditional full spatial reuse increases bandwidth efficiency but ignores multiuser diversity in the multi-hop network. Our method enables fractional spatial reuse with which multiuser diversity can also be exploited. The original optimization problem is decomposed into three tractable subproblems. First, subcarrier...
Efficient resource search in large-scale unstructured peer-to-peer (P2P) systems remains a fundamental challenge. In order to improve search performance, interest-based search is a good way to tackle the challenge. However, the existing interest-based search algorithms pay attention to user interest model and search history, but ignore some influence factors of improving performance. In this paper,...
For the provision of dependable search and rescue capability in dynamic and unpredictable disaster areas, each networked node should have ability to (1) autonomously support and co-operate with each other in a peer-to-peer (P2P) manner to quickly discover and dependably self-configure services available on the disaster area to deliver a real-time capability; (2) modify their behaviours to deliver...
For provision of dependable search and rescue capability in dynamic and unpredictable disaster areas, the networked nodes should have the ability to autonomously support and co-operate with each other in a peer-to-peer (P2P) manner to quickly configure any services available on the disaster area to deliver a real-time capability. In this paper, we present an innovative architectural approach which...
In social networks, people can directly contact some acquaintances that potentially have knowledge about the resources they are looking for. Similarly to social networks, where people are connected by their social relationships, two autonomous peer nodes can be connected in unstructured peer-to-peer (P2P) networks if users in those nodes are interested in each other's data. The similarity between...
This paper proposes a new load balancing strategy based on a systematical research on current load balancing mechanism. The new strategy combines the methods of gossip propagation and replication policy, and adopts two different propagation policies to cope with light and heavy overloaded conditions so as to improve performance of networks. At the end of this paper, we prove the reliability and scalability...
Peer-to-peer (P2P) networks attract attentions worldwide with their great success in file sharing networks (e.g. Napster, Gnutella, BitTorrent, and Kazaa). In the last decade, numerous studies have been devoted to the problem of resource discovery in P2P networks. However, efficient resource discovery remains a key challenge for large-scale P2P networks. An investigation of existing research on resource...
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