Flooding control method of on-demand route maintenance of multi-hop wireless self-organizing network

Abstract

The invention discloses a flooding control method of on-demand route maintenance of a multi-hop wireless self-organizing network. The method comprises the process of establishment of a basic route, the process of information interaction among specified nodes and the process of route recovery; the specific steps are as follows: firstly establishing one basic route in an on-demand route manner, then carrying out information interaction among the nodes in a specified range; and when the interruption of the basic route occurs and needs to be repaired, repairing in the specified range as far as possible, avoiding adopting a flooding mechanism in the range of the whole network, and achieving the purposes of controlling the route overhead and fast recovering the route. The flooding control method of on-demand route maintenance of the multi-hop wireless self-organizing network overcomes the defects that the existing on-demand route protocol, such as AODV, DSR and the like, needs to adopt the whole network flooding broadcast route request message when in route maintenance so as to cause a large amount of extra overhead, and achieves the purpose of improving the effectiveness of route algorithm.

Description

technical field [0001] The invention belongs to the technical field of wireless communication networks, and in particular relates to a flooding control method in on-demand routing maintenance of a multi-hop wireless self-organizing network. Background technique [0002] Multi-hop wireless self-organizing network is a centerless, self-organizing wireless network composed of multiple mobile nodes connected through wireless links. It does not depend on any specific network infrastructure and can realize fast and automatic networking. Military, emergency and disaster relief, commercial applications, sensor networks, home networks and other fields. In a multi-hop wireless ad-hoc network, due to the limited communication coverage of nodes, nodes that are far away need to communicate through the relay of other nodes. Therefore, each node in the network can not only move, but also has The two functions of router and host can complete the discovery and maintain the route to other no...

AI Technical Summary

Problems solved by technology

[0006] For routing maintenance, proactive routing protocols use periodic exchange of routing information between nodes, which will bring additional communication overhead and energy consumption, affecting the resource utilization of wireless ad hoc networks. On-demand routing protocols do not require periodic However, when a route being used is interrupted due to node failure or node movement, it will trigger the route rediscovery process, such as the typical on-demand routing protocols AODV and DSR, the source node uses flooding The mechanism broadcasts routing request messages on the entire network. However, using the flooding mechanism to re-establish the route will not only bring new overhead, but also increase the service delay. Therefore, how to control the scope of the flooding mechanism in the on-demand routing protocol It is a problem that needs to be solved to reduce the overhead brought by the flooding mechanism and realize the rapid recovery of the route.

Images