Research On P2P Resource Sharing Strategies Based On Trust Model

With the progress of society and the development of science and technology,resource sharing has become an indispensably important part in people’s life.Characterized by inherent high speed, rich resources, strong fault-tolerant ability andlow cost, P2P network holds an important status in Internet resource sharing. As P2Pnetwork is increasingly important, how to efficiently share P2P network resources hasbecome a problem to be solved urgently by academic and business circles. Thebuilding of trust model provides a feasible approach for efficient P2P networkresource sharing. This paper mainly develops a research on resource sharingstrategies based on trust model in the environment of P2P network.In general, the resource sharing strategies in P2P network are based on a certainmodel. However, the lack of effective trust mechanism in the model that traditionalP2P network resource sharing strategies rely on often results in low resourceallocation efficiency. Thus, the research focus at the present stage is to introduce trustmodel into P2P network, namely, the resource sharing strategies based on trust model,but following two aspects of problem exist in the present resource sharing strategiesbased on trust model.(1) In the process of building trust model, research on trust and effective trustevaluation mechanism has been seldom conducted. Existing method is to obtain thetrust model purely by verification of node behaviors under certain assumptions. Thus,to promote resource allocation efficiency, the model must be improved. TheSNA-based P2P trust model in this paper is built by grouping mode from thetransaction relationship of nodes.(2) In the process of P2P network resource sharing, the problem of large time lagin streaming media resource sharing has not been well resolved yet. In existingstudies on streaming media resource sharing strategy, traditional P2P networkresource sharing strategies is premised on several fixed nodes of complete storage ofstreaming media in the network, but the quit of these nodes will easily become the bottleneck of allocation strategy and taking super nodes as P2P network streamingmedia resource managers’ sharing strategy restricts the streaming media resourcesharing on other modes to some extent, so the problem of large time lag fails to beimproved obviously. Due to the dynamic nature and timeliness of streaming mediaresource sharing, the streaming media resource sharing strategy is required to havehigh time efficiency. Therefore, existing P2P network streaming media resourcesharing strategy needs to be improved. The P2P streaming media resource sharingstrategy based on trust model proposed by this paper can effectively shorten the delaytime when guaranteeing the broadcasting quality of streaming media.By sorting out and analyzing existing research findings, this paper builds P2Presource sharing strategies based on trust model to enhance the efficiency of resourceallocation. Specifically, it firstly analyzes disadvantages of existing P2P networkmodel; secondly, by combining with SNA and adding transaction relationship fortrusted sources, it proposes a kind of SNA group-based P2P trust model and expoundsits structure mode, to enable P2P resource sharing to be based on trust model, whichcan effectively improve the reliability of modes and the availability of resources;thirdly, according to the SNA group-based P2P trust model, it puts forward fileresource sharing strategy and streaming media resource sharing strategy, and the corecontent includes the concepts and calculation of trust degree and availability as wellas MSC algorithm; fourthly, it proves the feasibility and practicability of P2P resourcesharing strategies based on trust model through experiment; finally, it makes aconclusion about the whole research and provides the emphasis of next-phase workagainst imperfections in this paper.