System throughput and energy efficiency balance method based on power control in d2d communication

Abstract

The invention discloses a method for balancing system throughput and energy efficiency based on power control in D2D communication, which mainly solves the problem that interference management and green energy in the D2D communication system cannot be balanced in the prior art. The implementation plan is: define an interference-restricted area near the base station, select different resources to allocate to the D2D user pair according to the relationship between the position of the D2D user pair and the interference-restricted area; D2D user pairs that reuse cellular user uplink resources allocate resources; by improving the objective function of system throughput and using differential evolution to control the transmit power of users in a single cell, under the condition of ensuring the threshold value of user SINR, Constantly adjust the weight in the cost function to improve the energy efficiency of the system while obtaining the maximum throughput of the system, and achieve a balance between system throughput and energy efficiency. The invention realizes both interference management and green energy in the D2D communication system.

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...

AI Technical Summary

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

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