Joint power control and proportional fair scheduling method for D2D communication in cellular network

Abstract

The invention discloses a joint power control and proportional fair scheduling method for D2D communication in a cellular network, relates to the field of D2D communication in the cellular network, and aims to solve the problem of common-channel interference between users and the problem of fairness between the users due to the fact that the maximum throughput capacity of a system is used as a target in the existing interference suppression algorithm. An optimal power control method is used for realizing interference suppression. Meanwhile, aiming at the problem of user fairness caused by the time-varying characteristic of a channel under the condition of coexistence of multiple users, the invention adopts the proportional fair scheduling method so as to meet the demand of the users for the fairness. A cellular network model for multiplexing uplink resources for D2D communication is constructed, and mathematical modeling and solving for joint power control and proportional fair scheduling are carried out for the network model. The interference suppression method for joint power control and proportional fair scheduling, which is provided by the invention, can guarantee the quality of user communication and improve the throughput capacity and the fairness of the system.

Description

technical field [0001] The invention relates to a method for joint power control and proportional fair scheduling of D2D communication in a cellular network, and relates to the field of D2D communication in a cellular network. Background technique [0002] With the increasing demand of users for data traffic, D2D communication has become the most potential key technology in the next generation of 5G communication network due to its efficient spectrum utilization, energy efficiency and short transmission delay. The shortage of spectrum resources leads to the need to reuse the spectrum of cellular users during D2D communication, which in turn causes the problem of co-channel interference. Therefore, the problem of co-channel interference in D2D communication has always been a research hotspot. Many scholars have done a lot of research on the interference problem of D2D communication under the cellular network, and proposed a variety of interference suppression algorithms, suc...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for joint power control and proportional fair scheduling of D2D communication in a cellular network to solve the problem of co-channel interference between users and the existing interference suppression algorithm with the goal of maximizing system throughput. Fairness issues among incoming users

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