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

A technology of power control and control method, applied in the field of D2D communication, which can solve the problems of low frequency spectrum utilization, heavy base station communication load, low resource utilization, etc.

Active Publication Date: 2014-04-09
ZHEJIANG UNIV OF TECH
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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 inventi

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

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Embodiment Construction

[0076] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0077] refer to figure 1 , a distributed power control method based on energy efficiency optimization in D2D communication, implementing the method can maximize the energy efficiency of D2D users accessing cellular user resource blocks under the premise of satisfying the service quality of each user. The present invention is based on a cellular network system including a D2D network (such as figure 1 shown). In a cellular network system including a D2D network, a D2D user uses resources of a cellular user to directly perform data communication, which reduces the communication load of a base station and improves spectrum utilization. For a cellular network system including a D2D network, an optimization method for maximizing D2D user energy efficiency on the premise of ensuring user service quality is proposed, and the control method includes the following s...

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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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Application Information

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IPC IPC(8): H04W52/04
CPCY02B60/50
Inventor 吴远彭宏朱琼华钱丽萍
Owner ZHEJIANG UNIV OF TECH
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