Routing establishment and maintenance method suitable for wireless self-organizing network

Abstract

The invention discloses a routing establishment and maintenance method suitable for a wireless self-organizing network. The method comprises the following steps: periodically sending a broadcast message by each node in a self-organizing network, after the node receiving the broadcast message of the adjacent node, newly adding or updating the local neighbor node management information; computing arouting TQ to a one-hop neighbor node according to the local node management information at the interval of specific period; saving or updating the routing information to the neighbor node from this node; broadcasting a local routing information sheet; after the node receives the routing information message of the neighbor node, establishing or updating and maintaining the routing to two-hop or more nodes from the source node by combining the local routing information sheet. Through the method disclosed by the invention, the wireless signal quality, the electric quantity information of the node, the packet transceiving condition and the hop number are comprehensively considered, so that the data transmission can be performed by selecting the path with excellent signal quality, sufficient node electric quantity, stable link condition and less hops as much as possible in the routing selection, the high-efficient, stable and real-time routing selection can be realized.

Description

technical field [0001] The invention belongs to the transmission and processing method of routing information, in particular to a routing establishment and maintenance method suitable for wireless ad hoc networks. Background technique [0002] Wireless ad hoc network (Ad Hoc network) is a distributed network composed of multiple wireless communication devices (referred to as "nodes"). It has the characteristics of no center, dynamic topology changes, self-organization, and multi-hop routing. The network is flexible and convenient, and has strong invulnerability. Each node in the network can communicate with other nodes. Due to the limited wireless signal coverage of nodes, nodes within the range can communicate with each other directly, while the communication of nodes outside the coverage needs to be forwarded through intermediate nodes. Therefore Each node in the wireless ad hoc network also needs to undertake the routing function. [0003] Because the nodes in the netwo...

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Problems solved by technology

Among them, if the reactive routing technology does not have a route to the destination node when the source node sends data, it needs to wait until the route is discovered before sending it out, so it will cause a certain delay, and the real-time performance cannot meet certain requirements; a priori For wireless ad-hoc networks, the periodic broadcast detection packets of traditional routing technology still need to occupy part of the bandwidth resources. For routing technologies like BATMAN, the selection of routes is also determined by the link weight, and the weight has a great influence on the link weight. The wireless signal quality and the power consumption of the node itself are not fully considered. Once a key node is continuously selected as a relay routing node, the rapidly changing external wireless signal quality will cause unstable data transmission due to the untimely update of link weights. performance, or the node continues to transmit services and the power is exhausted, the network may not be able to communicate normally

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