A Trust Energy-Efficient QoS Routing Scheme for Mobile Peer-to-Peer Networks

Due to the ubiquitous use of wireless communication and enormous success of peer-to-peer (P2P) mode in wired networks, mobile P2P network (MP2P) attracts increasing attentions. However, the selfishness of nodes caused by the P2P mode, the scarcity of resources, and the Quality of Service (QoS) requirements of various network applications make it difficult to design an appropriate routing scheme. Thus, in this paper, we propose a trust energy-efficient QoS routing scheme in MP2P. We evaluate a routing path from three different aspects, namely, trust, energy consumption and QoS respectively. We apply interval forms to denote the network states and application requirements respectively for their difficulty to obtain and describe accurately, and calculate their matching by probability model and satisfaction degree as the evaluation value of a link. Then a heuristic routing protocol is proposed to find satisfied routing paths. Results from simulation experiments demonstrate that our proposed scheme has a better performance.