Resource management and access scheme based on resource sharing in Internet of vehicles

Abstract

The invention provides a resource management and access scheme based on resource sharing in Internet of vehicles. The resource management and access scheme is mainly characterized in that different vehicle-to-vehicle communication links as well as vehicle-to-road and vehicle-to-vehicle communication links can perform respective communication by sharing time and frequency resources; resources are not allowed to be shared among different vehicle-to-road communication links; resource sharing among different communication links is realized under the control and scheduling of a roadside central unit, the roadside central unit is used for making a resource scheduling decision according to channel and position information periodically fed back by vehicles, and different communication links communicate according to the resource scheduling decision of the roadside central unit; different communication links access a channel by means of time division multiple access (TDMA) or frequency division multiple access (FDMA, including orthogonal frequency-division multiple access OFDMA). Meanwhile, two resource sharing schemes based on interference patterns, namely, a resource sharing scheme based on an interference prediction pattern and a resource sharing scheme based on an interference level pattern are given, so that interference-limited resource sharing can be realized at low complexity among different communication links, and the throughput and spectrum efficiency of the Internet of vehicles are increased effectively.

Description

technical field [0001] The present invention proposes a resource management and access scheme applicable to the field of wireless vehicle communication, vehicle-to-vehicle communication and vehicle-to-road communication, allowing different vehicle-to-vehicle communication links and vehicle-to-road communication links in the Internet of Vehicles to be Under the control and scheduling of the roadside central unit, time and frequency resources are shared for communication, thereby effectively improving the communication capacity and spectrum efficiency of the entire Internet of Vehicles. Background technique [0002] In recent years, with the proposal and development of intelligent transportation systems, the Internet of Vehicles has received more and more attention and research. There are mainly two communication methods in the Internet of Vehicles, namely, vehicle-to-vehicle (V2V) ) communication. The Internet of Vehicles is the basic information bearing platform of the inte...

AI Technical Summary

Problems solved by technology

However, in the existing MAC schemes of the Internet of Vehicles, whether it is a random contention scheme based on CSMA / CA or a scheduling scheme based on TDMA or FDMA, in a specific communication network area, different communication links (V2V communication links Or V2I communication links) are not allowed to share resources for communication, so the realization of network spectrum efficiency is limited

With the increase in the number of vehicles and vehicle communication requirements in the Internet of Vehicles, the defects of the existing MAC solutions for the Internet of Vehicles that cannot effectively improve the network throughput and spectrum efficiency will become more and more obvious, which will affect the performance and performance of the entire network. Vehicle QoS

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