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System throughput and energy efficiency balancing method based on power control in D2D communication

A technology of power control and throughput, applied in the field of communication, can solve problems such as low system throughput, low system energy efficiency, ignoring interference, etc., achieve interference reduction, optimize interference management problems and energy waste problems, and have good interference management capabilities Effect

Active Publication Date: 2018-08-03
XIDIAN UNIV
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Problems solved by technology

The shortcomings of this method are: δ D - The ILA strategy ignores the interference of D2D users to the base station, and does not explain the users who cannot meet the restriction conditions
The disadvantage of this method is that the distance-based resource allocation scheme ignores the impact of the user sequence of multiplexing resources on system throughput
The disadvantages of this method are: the optimal power allocation scheme that exchanges power consumption for system throughput, and the system energy efficiency is low
The disadvantage of this method is that the minimum throughput is required to maximize energy efficiency, and the system throughput is low

Method used

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  • System throughput and energy efficiency balancing method based on power control in D2D communication

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Embodiment Construction

[0042] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0043] Under the single-cell model, the present invention adopts the one-to-one multiplexing mode of D2D users and cellular users, and realizes the optimization of system throughput and energy efficiency by delineating interference-limited areas, improving the resource allocation process, and adopting the power control of the improved objective function. balance.

[0044] refer to figure 1 , the concrete realization of the present invention is as follows:

[0045] Step 1, establish a single cell model.

[0046] In a cellular network that allows D2D communication, each pair of D2D users includes a transmitting end and a receiving end, and multiple pairs of D2D users and multiple cellular user CUEs are randomly distributed in a single cell, and the base station BS is placed in the center of the single cell. And set the number of cellular users to be greater ...

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Abstract

The invention discloses a system throughput and energy efficiency balancing method based on power control in D2D communication. The problem that both of interference management and green energy sourceof a D2D communication system cannot be taken into consideration in the prior art is mainly solved. The realization scheme is as follows: designating an interference limited region near by a base station, selecting different resources to distribute to a D2D user pair according to a relation between a location of the D2D user pair and the interference limited region; distributing the resource to the D2D user pair of a reusable cellular user uplink resource by adopting an improved resource distribution way based on the distance selection; improving a target function of the system throughput andcontrolling transmitting power of a user in a single cell by using differential evolution, and continuously regulating a weight in a cost function under the condition of guaranteeing a signal-to-interference-to-noise ratio threshold value. The system energy efficiency is improved while the system maximum throughput is acquired, thereby achieving the balance of the system throughput and energy efficiency. Through the method disclosed by the invention, both the interference management and the green energy source in the D2D communication system are taken into consideration.

Description

technical field [0001] The invention belongs to the technical field of communication, and further relates to a method for balancing system throughput and energy efficiency, which can be used in a D2D communication system. Background technique [0002] In recent years, with the rapid development of wireless networks, various new services have emerged, and people have put forward more new demands. In the future, mobile communication must further expand coverage, increase data transmission rate, reduce transmission delay and emphasize green energy saving. However, with the evolution of mobile communication systems, bandwidth requirements continue to increase, and spectrum resources become very scarce. Therefore, how to further improve the spectrum utilization rate of the network has become one of the development directions of the wireless network in the future. D2D communication technology can carry out direct link communication within a relatively short distance range withou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/04H04W72/08H04W4/70H04W4/021H04W72/54
CPCH04W4/021H04W4/70H04W72/0453H04W72/0473H04W72/54Y02D30/70
Inventor 孙永军左晓静刘祖军
Owner XIDIAN UNIV
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