Vehicle-mounted terminal wireless access method for vehicular access cooperative system

Abstract

The invention discloses vehicle-mounted terminal wireless access method for a vehicular access cooperative system. A wireless network access module is arranged on the a vehicle-mounted terminal, a wireless resource managing module is arranged on a road side wireless network AP or a base station, a combined wireless resource managing module is arranged on the Internet network side, information is transmitted and exchanged between the vehicle-mounted terminal and the wireless resource managing module and between the wireless resource managing module and the combined wireless resource managing module respectively through signaling and Internet, the QoS overall situation satisfaction, the network resource distribution overall situation effectiveness and the fairness are integrated into quantization parameters through the collaborative decision making of the vehicle-mounted terminal, the wireless resource managing module and the combined wireless resource managing module, and the parameters are driven to solve to enable a power system model to achieve wireless access decision information. By means of the vehicle-mounted terminal wireless access method, a vehicle-mounted terminal wireless access scheme capable of dynamically self adapting to network environment change can be given out from the comprehensive angle of guaranteeing the QoS overall situation satisfaction, the network resource distribution overall situation effectiveness and the fairness.

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 based on information exchange between "Vehicle-to-Vehicle (V2V)" and "Vehicle-to-Infrastructure (V2I)" wireless communication devices System, 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 oth...

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Problems solved by technology

[0008] In order to overcome the shortcomings of existing wireless access technologies 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 self-adaptive characteristics for changing wireless network environments

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