Analysis And Implementation Of Wireless Network Redirector And Key Nodes

Wireless sensor network because of its outstanding mobile performance, rapid deployment capability,low price and excellent safety performance after the correction is becoming the new choice of enterprisenetwork. However, also will have many new questions, this paper focuses on the control on two aspectsfrom the service redirection and key nodes of the network energy, in order to solve the security problem ofnew type wireless sensor networks and service life.Firstly, the wireless network service redirection problem. The802.11wireless network is now wirelessnetwork model is one of the most commonly used,AP is the access device in a wireless network, all thedata through the wireless network is composed of a AP exchange in backbone network. HTTP services isthe most basic Internet services, service highest transmission flow data. Service redirection is one of theprotection of enterprise data is the simplest and most effective tool. In order to control the enterprises in thenon authorized users to access to sensitive information, to provide a more secure protection for enterpriselevel data, the user most of the problems this thesis studied. In this paper, data from the HTTP messagebased analysis of the data sequence, HTTP, from the IP layer and HTTP layer gives the most easy toimplement and system resources consumption minimal solutions, and a detailed analysis of the basicknowledge of wireless network, message structure of wireless network, wireless access point (AP) etc.equipment for the deep exploration, finally, combined with the embedded system programming, realizedthe redirection function integral.Secondly, to solve the safety performance at the same time, as far as possible to prolong the life of thenetwork has become a urgent problem. Wireless sensor networks are energy constrained networks, routing protocols published in recent years to consider the problem of saving energy of sensor node, but notbetween the node important degree different to distinguish. Are widespread in the networks nodeconnecting different regions, their failure will lead to "sensor island" and "energy hole" appears. Relative toother nodes, to have a much larger impact survival of this kind of nodes on the network, which we call thekey nodes. In this paper, considering the node energy point of view, the three attributes of the critical node:flow factor, bridging factor, convergence factor and two kinds of key nodes in a way: using the energymodel of judgment and decision point in a connected graph, and perform the simulation using the networksimulator NS2. Experimental results show that the failure of key nodes will cause serious impact on theconnectivity of network, the other node energy and a large number of surplus, so we can take differentenergy control strategy on these key nodes, so as to prolong the network life cycle.In this paper, the wireless sensor network nowadays emerging, in-depth study of the safety and energysaving issues, trying to solve the problem of energy control wireless network service redirection problemand key nodes, so as to improve the safety and service life of wireless sensor network.