Multi-channel multi-hop vehicle ad hoc network frequency coordination allocation method

Abstract

The present invention is a multi-channel multi-hop vehicular ad hoc network frequency coordination allocation method, comprising: any node in the network broadcasts a channel detection frame to its neighbor nodes; when the source node has data to be sent to the destination node, the source node detects the Add a source routing detection frame to the frame, and then select two channels with the best channel quality to broadcast to neighbor nodes; judge whether they meet the next hop stability condition; the source node that receives the source routing detection frame reply responds according to the source routing detection frame The movement speed and position of the next hop included Select the optimal next hop and the suboptimal next hop; select the best link to send data packets; the node receiving the data frame arrives at the next hop The best communication link, multi-hop Then send the data from the source node to the destination node. The invention can enable the node to fully grasp the channel quality of its several channels, find the channel with the best state in time, reduce the number of hops in the multi-hop ad hoc network, and improve the communication quality and communication efficiency.

Description

technical field [0001] The invention belongs to the multi-channel technology in a multi-hop ad hoc network, specifically a multi-channel multi-hop vehicular ad hoc network frequency coordination allocation method, which is applied to the field of vehicular ad hoc network. Background technique [0002] Intelligent Transportation System (ITS) has been a research hotspot for many years. In various technical fields of intelligent transportation system, it aims to improve vehicle driving safety, transportation efficiency and provide ubiquitous wireless Internet access. Vehicular Ad-hoc Network (VANET for short) is the top priority of research. VANET is an ad hoc network dedicated to automotive communications. The Federal Communications Commission uses the 75MHz frequency band of 5.850~5.925GHz exclusively for intelligent transportation systems. Through dedicated short-range communication (DSRC), the 75MHz is dedicated to the communication between vehicles (Vehicle-to-Vehicle, V2...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the existing problems, the present invention aims to provide a multi-channel multi-hop vehicle ad hoc network frequency coordination allocation method

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