AODV dynamic delay routing method based on energy aware

Abstract

The invention discloses an AODV dynamic delay routing method based on energy aware. When path selection is carried out through AODV, two factors: path hop count and node residual energy are firstly taken into consideration and an energy evaluation function is defined, thereby judging paths and selecting the optimum path; an intermediate node dynamically adjust time delay of forwarding an RREQ packet according to the node residual energy, so the routing participation degree of nodes with relatively high node residual energy is improved; and a destination node delays the recording of the RREQ packet, moreover, the optimum master route and two alternative routes are selected according to the energy evaluation function through adoption of a multipath routing policy. An experimental result shows that according to the method, the network node death number is reduced to certain degree, the network integrated energy consumption is reduced, and the network lifetime is prolonged. Relative to a traditional AODV protocol, the method has the advantages that a network packet delivery rate and throughput are obviously improved. Through adoption of the multipath routing policy, the times of restarting a route discovery process can be reduced, and the additional routing overhead can be effectively reduced.

Description

technical field [0001] The invention belongs to the field of wireless communication networks, and specifically relates to an AODV dynamic delay routing method based on energy perception. technical background [0002] Most of the nodes in the Ad-hoc wireless network rely on batteries with limited power to maintain operations, so how to make full use of battery energy to maximize the survival of the wireless network in the life cycle of the Ad-hoc network is currently facing The key issue. Traditional Ad-hoc routing protocols, including the classic AODV routing protocol, select routes based on the principle of the minimum number of hops, without considering node energy. Multiple selections cause some nodes to be frequently used, and the energy consumption of nodes is faster than other nodes, resulting in the failure of the path containing the node, which greatly shortens the overall life of the network. It can be seen that the scheme with the minimum number of hops has relat...

AI Technical Summary

Problems solved by technology

Traditional Ad-hoc routing protocols, including the classic AODV routing protocol, select routes based on the principle of the minimum number of hops, without considering node energy. Multiple selections cause some nodes to be frequently used, and the energy consumption of nodes is faster than other nodes, resulting in the failure of the path containing this node, which greatly shortens the overall life of the network

It can be seen that the scheme with the minimum number of hops has a large defect in energy optimization

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