A method for peer-to-peer visible light communication terminal mode cooperative selection based on game theory

Abstract

The invention discloses a peer-to-peer visible light communication terminal mode collaborative determination method based on the game theory, specifically comprising the following steps: firstly, building a terminal shoot-through visible light communication model based on model collaborative determination, and initializing mobile subscriber access; building three communication modes; then, transmitting subscriber information to a control terminal by a transmitting end, respectively calculating a receiving signal, a signal-to-noise ratio and a utility function; furthermore, selecting an optimal communication mode according to channel capacity, and building a communication link; and finally, judging whether different subscriber pairs perform forwarding through the same fixed transceiver, if so, selecting one communication mode for each subscriber pair, and forming communication mode combinations; respectively calculating utility function sum under each communication mode combination, and selecting the combination corresponding to a maximum value as the communication link of all the subscriber pairs; otherwise, performing normal communication by the user pairs. The method has the advantage of solving a problem of reduction of quality of communication caused by shading in terminal peer-to-peer visible communication.

Description

technical field [0001] The invention belongs to the field of visible light communication, and specifically relates to a game theory-based cooperative selection method for a peer-to-peer visible light communication terminal mode, which is used in a terminal-to-peer visible light communication system. Background technique [0002] With the increasing demand for information sharing between mobile terminals, direct-to-device communication technology (D2D) will emerge as one of the future 5G technologies. D2D can realize direct communication between terminals, including a variety of communication methods between devices, such as Bluetooth and Wi-Fi Direct. However, these communication methods cannot meet users' demands for greater bandwidth, and a new communication technology is needed to realize direct communication with large bandwidth between devices. [0003] Visible light covers the light wave band with a wavelength of 380nm to 780nm. Visible light communication (VLC) can p...

AI Technical Summary

Problems solved by technology

[0004] One of the difficulties in terminal direct-to-visible light communication is the degradation of communication quality due to occlusion; current solutions can be roughly divided into two categories: one is to use highly reflective walls for signal reflection and reception; the other is to use A fixed location is equipped with several repeaters for forwarding

However, in order to achieve the correct reception of the transmitted signal, there are special requirements for the material of the wall or the position design of the repeater, which is not conducive to popularization.

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