A wireless access method of vehicle terminal for vehicle-road coordination system

Abstract

The invention discloses a vehicle-mounted terminal wireless access method for a vehicle-road coordination system. A wireless network access module is deployed on the vehicle-mounted terminal, a wireless resource management module is deployed on the roadside wireless network AP or a base station, and a joint wireless resource management module is deployed on the Internet network side. module; between the vehicle-mounted terminal and the wireless resource management module, and between the wireless resource management module and the joint wireless resource management module, respectively exchange information through signaling messages and Internet wired transmission; through the vehicle-mounted terminal, the wireless resource management module and the joint wireless resource management module Collaborative decision-making integrates QoS global satisfaction, global utility and fairness of network resource allocation into a quantitative parameter, and uses this parameter to drive and solve the dynamic system model of the present invention to obtain wireless access decision information. By applying the method of the present invention, a vehicle terminal wireless access scheme that dynamically adapts to changes in the network environment can be provided from the comprehensive perspective of guaranteeing QoS global satisfaction, global benefit and fairness of network resource allocation.

Description

technical field [0001] The method of the present invention relates to the technical field of intelligent transportation system and wireless communication, in particular to a wireless access method of a vehicle-mounted terminal used in a vehicle-road coordination system. Background technique [0002] The automotive and transportation fields are typical application fields of wireless networks, and vehicle-mounted terminals have become an important type of mobile communication terminals. Cooperative Vehicle and Infrastructure System (VICS) based on information exchange between "Vehicle-to-Vehicle (V2V)" and "Vehicle-to-Infrastructure (V2I)" wireless communication devices , CVIS), in order to effectively provide information services for vehicle-mounted terminals and realize information coordination and cooperation among people, vehicles, and roads, the vehicle-road coordination system relies heavily on a variety of wireless network technologies to deploy applications. On the ot...

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Problems solved by technology

[0008] In order to overcome the shortcomings of the existing wireless access technology that cannot comprehensively consider factors such as fierce competition for wireless network resources, dynamic changes in the network environment, and concurrent access of vehicle-mounted terminals, the present invention proposes a wireless access method for vehicle-mounted terminals used in a vehicle-road coordination system Different from the traditional wireless access technology, the method of the present invention combines the QoS global satisfaction degree of the vehicle terminal, the global utility of the wireless network resource allocation and The global fairness is synthesized into a quantitative parameter, and the dynamical system model proposed by the method of the present invention is driven and solved by using the comprehensive quantitative parameter, and the equilibrium solution vector of the dynamical system is used as the decision vector, and the decision information for the wireless access of the vehicle terminal is obtained from it, which is a kind of A wireless access solution capable of guaranteeing global QoS satisfaction of vehicle terminals, global benefits of wireless network resource allocation, and global fairness, and having dynamic adaptive characteristics for changing wireless network environments

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