Resource allocation method of V2V communication system

Abstract

The present invention provides a resource allocation method of a V2V communication system, wherein the V2V communication system includes a base station for allocating resources and a plurality of communication groups for communicating by means of allocated resources, wherein each communication group includes a transmitting user and a receiving user. The method comprises the following steps that: the communication groups report channel state information to the base station; the base station establishes a signal-to-noise ratio matrix based on all the channel state information; and the base station allocates resources for the signal-to-noise ratio matrix based on a minimization matrix spectral radius growth algorithm. The resource allocation method is more in line with the characteristics of V2V communication, and has the advantages of low calculation complexity and easiness in control, and can save a lot of resources.

Description

technical field [0001] The present invention relates to the technical field of communication, and more specifically, to a resource allocation method of a V2V communication system. Background technique [0002] In recent years, traffic jams and traffic accidents have become more and more serious, so the concept of intelligent transmission system has been proposed. For example, V2X communication includes V2V (vehicle-to-vehicle), V2I (vehicle-to-infrastructure) and V2P (vehicle-to-pedestrian) communication. When traffic safety issues arise, V2X communication can transmit relevant information with millisecond-level delay and near 100% reliability. [0003] In the past, the Ad-Hoc network based on the 802.11p protocol was regarded as a traditional solution for V2X communication. However, WLAN networks only support low-speed mobility and lack QoS guarantees. In the present invention, the V2X communication adopts the LTE standard. The main reasons are: LTE works in the licensed...

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Problems solved by technology

[0004] The difference between V2V and D2D is: 1) In D2D communication, cellular users have higher priority, which is not applicable to V2V communication related to road safety information, so 3GPP provides a dedicated carrier for vehicles to use; 2) In D2D communication , the main goal is to maximize the system throughput of D2D users and cellular users, while V2V communication is mainly event-triggered or periodic, so how to send faster and receive correctly is a more important goal; 3) In a cell, V2V will be far more than the number of D2D users, which will face the problem of shortage of resources

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