Research On The Behavior Of Nodes In Wireless Mesh Network

Free riding behavior and churn behavior are common problems in the network, when thetwo types of nodes of the scale is too large, it will seriously affect the network performance.In this paper, by collecting the existing literature related analysis to find the entry point,research and analysis of free riding node behavior and Transmission rate churn behaviorwhich is the one of churn behavior in wireless Mesh networks. On the basis of understandingand absorption of the trust mechanism, evolutionary game, suppression strategies of freeriding and churn, free riding strategy based on hierarchical reward and punishmentmechanism and transmission rate churn suppression strategy were presented. Thetransmission rate churn suppression strategy includes neighbor selection strategies based ontransmission rate churn and node failure recovery strategy based on cycle detection:(1) Among them, for the free riding suppression strategy, the wireless Mesh networknode is overload will cause congestion as the premise. corresponding suppression strategyabout is proposed, which included: network congestion; hierarchical strategies as reward andpunishment; in addition, according to the contribution value determination the nodes’ typeswere determined, as well as the node download speed would be limited and so on.(2) For the transmission rate churn, through the research and analysis of transmissiondelay and churn, the suppress transmission rate jitter in wireless Mesh networkwereproposed which were divided into two categories according to the node at the time. Ideas areas follows: to request access node, the predicted probabilities by churn phenomenon to ensurethe smooth access to resources, thereby reducing the transmission rate churn phenomenon inthe process of transmission; for node resource access, by detecting the transmission rate ofthe churn of nodes, once the accumulated churn values exceed customer tolerance, to processthe node.(3) Then according to the two kinds of node behavior separately proposed strategy, thecollaborative service model evaluation based on the behaviors of nodes was put forward, inorder to consider the strategy of efficiency when the two strategies of comprehensive wereimplemented.Furthermore, two kinds of collaborative strategy were made simulation experiment, andresults show that, both single strategy or collaborative strategy, can be a certain degree refrainfree riding behavior and the transmission rate churn behavior of nodes in the wireless mesh network, so that improve the quality of network service.Finally, a summary of the conclusion of the whole thesis, starting from the current pointof view and the object of study as well as the lack of points, the research content of the futurewas put forward.