Research And Improve AODV Routing Protocol Based On Wireless Mesh Network

As people in their daily lives dependent on the network, thedevelopment of wireless technology in full swing, network accessand transmission quality has undergone considerabledevelopment. A lot of technical problems solved, the new networkequipment constantly updated. Ascendant in the development ofwireless LAN, wireless mesh network could be another star of thefuture wireless network development. Compared with thetraditional wireless LAN, WMN is greater flexibility, higherreliability, and better performance. Wireless mesh networks fromthe group to achieve a large-scale network construction provides aconvenient way for the user’s network access. compare withWireless mesh network， traditional wireless LAN has manyproblems to be solved, such as poor scalability low androbustness. However, wireless mesh networks also face many technical problems, such as the choice of routing protocol, are-definition of the MAC layer and security improvements.Recently, powerful client devices used to make the meshnode has become increasingly common. Wireless Mesh Networktechnology is based on traditional radio access network to learnthe nodes in Mobile Ad Hoc relaying, topology dynamic discoveryas well as the route real-time computing and other advancedconcepts for commercial wireless network provides a moreefficient and reliable convenient technical solutions. In view of thetwo networks have much in common, so we choose to conduct anin-depth study of AODV routing protocol for Ad Hoc network,AODV routing protocol for the one-way transmission and stabilityof the proposed improvement program.First， I give a brief introduction of the concept anddevelopment of the wireless mesh network. Second， I made acomprehensive presentation of new ideas and planning of IEEE 802.11s standard.Then I introduce the lack of existing networkprotocols on the routing protocol. The optimized AODV routingprotocol has the following improvements:1：Make the the single-channel transmission mode of AODVrouting protocol with changing its multiplex transmission, to ensurethe stability of data transmission.2：In topology discovery and maintenance, adjust the the noderoute discovery mechanism and maintenance, in the the multipathdiscovery process to maintain the efficiency of the originalagreement.3：Amend the request message to the receiving routing androuting reply message handling also made correspondingchanges to adapt to the needs of the new route.4：Develop a conflict-free multi-link algorithm, by an increasein the response message of the AODV routing protocol link serial number, in order to distinguish the original serial number of thedestination node. In this way, the serial number of each link canrepresent an available link, the routing table will be more related tothe purpose path. Link sequence number selected by thedestination node overlay routing number and an intermediatenode number of routes regressive algorithm to achieve the the linknumbers do not conflict.This article uses the optimized AODV algorithm on varioustopologies through NS-2simulation. The simulation results showthat the improved AODV routing protocol is availabe and has abetter improvement in performance than AODV routing protocol;the link interrupt frequency, the new routing multicast transportprotocols can guarantee the stability of the data transmission.