Vehicle-mounted self-organizing network routing decision-making method in hybrid network mode

Abstract

The invention relates to a vehicle-mounted ad hoc network routing decision-making method in a hybrid network mode, a vehicle-mounted ad hoc network comprises a traffic road structure, vehicles and RSUs, a plurality of RSUs in wired communication connection in pairs are deployed in the traffic road structure, and the method comprises the following steps: 1) abstracting the traffic road structure into a directed graph; 2) obtaining vehicle driving data, and constructing a vehicle node moving behavior model; 3) acquiring two vehicles needing to communicate; 4) selecting candidate nodes and constructing a final communication link based on the communication range of each node, if the candidate nodes cannot be acquired, constructing the final communication link through the RSU, and if the RSU cannot be acquired, outputting a result that the destination node cannot communicate; in the step 4), the candidate node selection process comprises the step of eliminating unstable nodes possibly exceeding the node communication range in the future. Compared with the prior art, data packet transmission of a wired and wireless hybrid network is provided, and the reliability, low time delay and high efficiency performance of the vehicle-mounted ad hoc network are improved.

Description

technical field [0001] The invention relates to the technical field of vehicle ad hoc network routing decision-making, in particular to a vehicle ad hoc network routing decision method in a hybrid network mode. Background technique [0002] The intelligent transportation system is the development direction of the future transportation system. It improves the efficiency of transportation through the harmonious and close cooperation of people, vehicles and roads, alleviates traffic congestion, improves the passing capacity of the road network, reduces traffic accidents, reduces energy consumption, and reduces environmental pollution. Vehicular ad hoc network is a distributed, variable and self-organizing mobile network built on mobile vehicles and road communication facilities. In the traditional location-based vehicle ad hoc network routing method, GPS is used to obtain location information, and greedy algorithm is used for routing selection, such as GPSR, GyTAR, etc. Howeve...

AI Technical Summary

Problems solved by technology

However, in the existing vehicular ad hoc network routing methods, due to the instability of the high-speed mobile wireless network environment, when data passes through the transmission link, data packet loss, link breakage, and excessive delay are prone to occur.

Images