Position competition vehicle-mounted self-organizing network multi-hop broadcast method

Abstract

The invention relates to a position competition vehicle-mounted self-organizing network multi-hop broadcast method, and belongs to the technical field of communication. The method comprises the following steps: 1, dynamic clustering of connection stability which comprises the steps: carrying out the clustering of nodes, completing the clustering based on the connection stability, filling a broadcast data package and carrying out broadcasting, enabling the nodes to execute a broadcast forwarding method after receiving the broadcast data package, and achieving the competition forwarding of the broadcast data package; 2, multi-hop broadcast package transmission which comprises the steps: initiating a broadcasting process when an active node in a network needs to carry out data broadcasting of data of the whole network; 3, relay node competition forwarding which comprises the steps: employing different relay node competition forwarding strategies for different road models on the basis of network node clustering, wherein the relay node competition forwarding strategies mainly comprises relay node competition selection under a road segment model and relay node competition selection under a road intersection model. The method effectively reduces the redundancy of multi-hop broadcast and improves the reliability of broadcast. Meanwhile, the method adds a broadcast carrying forwarding strategy for a network isolated cluster head, and guarantees the broadcast reliability in a node sparse region or a network cavity region.

Description

technical field [0001] The invention belongs to the technical field of communication, in particular to the field of vehicle ad hoc network technology, and relates to a multi-hop broadcasting method for a vehicle ad hoc network with position competition. Background technique [0002] In recent years, the urgent need for traffic intelligence and the rapid development of wireless communication technology have given birth to the combination of the two. As part of the initial research on intelligent transportation systems, vehicle ad hoc network technology has become an interdisciplinary subject in academic and industrial research in recent years. hot topics. The vehicle ad hoc network studies the communication between vehicles. Different from the traditional wireless mobile ad hoc network, the vehicular ad hoc network is a wireless ad hoc network based on inter-vehicle communication. It consists of two parts: the vehicle on the road Communication between vehicles, wireless comm...

AI Technical Summary

Problems solved by technology

Although this method can try its best to ensure that the data reaches every node in the network, and the method is simple and effective, it brings a series of problems, mainly in the following aspects: First, since each node repeatedly broadcasts, this brings a lot of problems to the network. It brings a large amount of redundant information, which is easy to form a broadcast storm (BroadcastStorm), resulting in a waste of resources; second, the forwarding time of adjacent nodes is highly consistent when broadcasting data, which is likely to cause channel competition and collision; third, a large number of The existence of hidden and exposed terminals affects the reliable distribution of data

Traditional wireless mobile ad hoc network broadcast protocols are also not suitable for vehicular ad hoc networks due to differences in application environments

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