Vehicular access cooperation-based expressway wireless network message transmitting method and device

Abstract

The invention discloses a vehicular access cooperation-based expressway wireless network message transmitting method and device. The vehicular access cooperation-based expressway wireless network message transmitting method has two working modes of a source node and a destination node, a message distribution network with a certain layer principle is formed from inside to outside on an event occurring place, the message priority of a substitute event is gradually lowered with the time and continuous forwarding, and messages with same priorities are continuously fused in the process. The vehicular access cooperation-based expressway wireless network message transmitting device comprises a vehicular device, a road side device and a manual service center, wherein the vehicular device is used for ranking and fusing an emergency event, the reduction of the priority is controlled with the time and the distance, a node which is closer to the occurring place immediately receives a data packet with high priority, and a node which is more far away from the occurring place receives a data packet at a lower priority. According to the invention, the utilization efficiency of a wireless network can be effectively increased, the redundancy information quantity in the wireless network is lowered, and the problem of degradation of the wireless network, caused by insufficient bearing capacity of the wireless network and massive data is relieved.

Description

technical field [0001] The invention relates to the field of computer wireless communication, and is applied to vehicle-to-vehicle and vehicle-to-road communications on expressway networks with wireless network coverage, in particular to a method and device for expressway wireless network message transmission based on vehicle-road coordination. Background technique [0002] With the continuous increase of the number of cars, there are more and more traffic problems on roads at all levels. The main roads in cities are accompanied by morning and evening rush hours, and traffic congestion often occurs. Serial rear-end collisions and other major traffic accidents occur on expressways. In recent years, traffic problems have attracted more researchers' attention. With the strong support of national policies, the development of intelligent transportation for decades is expected to solve or alleviate the current problems in traffic and the problems that may arise in future developmen...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems of increased bearing pressure of expressway wireless network and insufficient wireless network bandwidth, the present invention proposes an expressway wireless network message publishing device and method based on vehicle-road coordination

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