Distributed power control method based on energy efficiency optimization in D2D communication

Abstract

A distributed power control method based on energy efficiency optimization in D2D communication comprises the following steps: (1) a D2D user and a cellular user realize D2D user energy efficiency optimization on the basis of ensuring user transmission quality through a user distributed transmission power control method, wherein the optimization problem is described as a multi-variable non-convex optimization problem; (2) the problem P1 is converted into a single-user transmission power control optimization problem; and (3) the users carry out power control and optimize the user energy efficiency in a transmission power range in order to guarantee the minimum quality service. The distributed power control method based on energy efficiency optimization in D2D communication, provided by the invention, is capable of reducing the communication load of a base station, improving the spectrum utilization rate, enhancing the scalability and security and improving the resource utilization rate.

Description

technical field [0001] The present invention relates to the field of D2D communication, in particular to a distributed power control method in D2D communication. Background technique [0002] With the rapid growth of mobile data services, the D2D communication mode of sharing traditional cellular network resources can provide better services for the next generation of 5G heterogeneous wireless networks (such as small cell heterogeneous networks and cloud-based wireless access networks, etc.). Emerging technologies appear before the public eye. Since the distance between the user receiver and the transmitter is very close, the D2D network does not use the base station to rebroadcast the message, but only multiplexes the network resources of the cellular network for direct communication, which greatly increases the network capacity and saves transmission power consumption. However, D2D users reuse resources of users in the cellular network to a certain extent, which affects t...

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Problems solved by technology

[0003] In order to overcome the disadvantages of heavy base station communication load, low spectrum utilization rate, low scalability and security, and low resource utilization rate caused by the power control of the central controller in D2D communication, the present invention provides a method to reduce the base station A distributed power control method based on energy efficiency optimization in D2D communication that improves communication load, improves spectrum utilization, improves scalability and security, and improves resource utilization

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