Research On The Improvement Of AODV Routing Protocol For Wireless Mesh Network

Wireless Mesh network has always been a popular research direction of wireless communication technology.It is simple to install,and has the advantages of non-line-of-sight transmission,stable transmission,and flexible structure.It can be applied to a variety of networking occasions.At present,research on wireless Mesh network technology mainly includes antenna technology,routing technology,wireless switching technology,gateway traffic control,channel allocation and node interference control.Among them,the design of routing protocol is generally improved according to the different transmission environment,so there is no uniform standard of routing protocol for wireless Mesh network in the world.At present,there are more than 100 wireless Mesh network protocols improved from Ad Hoc,but most of them are based on adding different routing criteria to improve the protocol.The use of algorithms to optimize protocol performance is still relatively little.Traditional routing protocol improvement research has reached a bottleneck,and the design of routing criteria also has certain limitations.Although multi-routing criteria combined with optimization can optimize various aspects of the protocol,it increases the protocol's computational overhead.This paper intends to study a new protocol improvement idea,combined with the optimization features of the algorithm and the improvement of the protocol working mechanism,so that the performance of the classic routing protocol is improved.This article mainly studies the classic routing protocol from the perspective of wireless Mesh network routing protocol performance,analyzes the advantages and deficiencies of the migration of AODV routing protocol and DSR protocol from Ad Hoc network to wireless Mesh network,and leads to the improvement direction of AODV routing protocol.Then,in view of the shortcomings of the traditional AODV routing protocol applied to the wireless Mesh network,this paper proposes an AMQCGA?AODV routing protocol based on adaptive broadcasting and genetic algorithm.The AMQCGA?AODV routing protocol introduces the broadcast mechanism of RREQ message packets based on node energy and node load.The adaptive forwarding probability model improves the deficiencies of the packet redundancy caused by the flooding of broadcast RREQ message packets in the network system and the large energy consumption of the network;the second new protocol is the routing path that is collected by the broadcast RREQ message packet and stored in the destination node at the beginning of the protocol.This paper introduces a genetic algorithm path finding mechanism to perform iterative optimization of these routing paths with multiple Qo S guarantees,output the optimal path with multiple Qo S guarantees,and then reply to the source node RREP message packet,so that the data transmission path has a certain Qo S guarantee.This improvement also increases the applicability of the agreement.Finally,this paper will use OPNET Modeler14.5 simulation software to build the wireless Mesh network system,respectively simulate the traditional AODV protocol and the AMQCGA?AODV protocol.After simulation,this paper analyzes the network energy consumption,end-to-end delay,network throughput,route discovery time and route successful delivery rate of the two protocols.Simulation shows that the performance of the new protocol proposed in this paper has been improved in terms of reducing network energy consumption,etc.The research in this paper has certain theoretical and application value.