V2X resource allocation method and system based on D2D communication

Abstract

The invention discloses a V2X resource allocation method based on D2D communication. The method comprises the following steps: constructing an interference topological graph according to interference information; carrying out clustering on all vehicle users, wherein vehicle users causing no interference to each other are grouped into one cluster; allocating a channel for each vehicle user; and carrying out power adjustment on all cellular users and the vehicle users through a power adjustment scheme. The V2X resource allocation method based on D2D communication can effectively suppress cross-layer interference and same-layer interference between the cellular user layer and the vehicle user layer, and maximize throughput capacity of the cellular users under the condition of ensuring communication requirements of the vehicle users. The invention also provides a V2X resource allocation system based on the D2D communication.

Description

technical field [0001] The present invention belongs to the technical field of wireless communication, and in particular relates to a V2X resource allocation method and system based on D2D communication. Background technique [0002] In the era of information society, automobiles are extremely important mobile information carriers. In order to meet the multi-scenario business needs of vehicles such as assisted driving and in-vehicle entertainment, cars need to interact with the outside world, that is, to realize vehicle-to-vehicle (V2V), vehicle-to-roadside facilities (V2I), vehicle-to-person (V2P), and vehicle-to-network (V2N) interconnection and data transmission, these communication technologies are usually collectively referred to as V2X. At present, the V2X solution is Ad-hoc communication based on IEEE 802.11p standard and basic mobile communication based on cellular network. Compared with the V2X communication solution based on cellular network, IEEE 802.11p uses CSM...

AI Technical Summary

Problems solved by technology

Some scholars have proposed different algorithms to effectively solve the problem of V2X resource allocation based on D2D technology, minimize the consumption of cellular wireless resources, and solve the problem of computational complexity of resource allocation.

[0005] However, none of these methods take into account the high reliability and low latency communication requirements of V2X

Someone proposed an allocation scheme for uplink resource sharing for V2X communication, which maps the random fast-fading V2X communication channel state to the relationship between the signal-to-interference-noise ratio and the number of multiplexed channels, and proposes a channel allocation scheme And the power control scheme, while meeting the delay and reliability requirements of Internet of Vehicles user communication, maximize the total rate of cellular users, but the grouping method does not completely eliminate co-channel interference, and the resource utilization rate is not maximized

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