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Power control method based on social perception D2D network

A power control and network technology, applied in power management, wireless communication, electrical components, etc., can solve problems such as co-channel interference of cellular users, and achieve the effect of reducing load, ensuring service quality, and improving spectral efficiency

Pending Publication Date: 2022-06-24
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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Problems solved by technology

In addition, multiplexing the available spectrum for cellular communication is an effective means to improve the spectral efficiency of the system, but excessive spectrum multiplexing will cause serious co-channel interference to cellular users

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  • Power control method based on social perception D2D network
  • Power control method based on social perception D2D network
  • Power control method based on social perception D2D network

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Embodiment Construction

[0066] Aiming at the characteristics of heavy base station load and low spectral efficiency in the cellular system, the present invention proposes a power control method based on social awareness D2D network. Divide into the same cluster, and urge users in the same cluster to communicate using D2D communication, then construct an optimization problem with the goal of maximizing the total transmission rate of D2D communication, and simplify the objective function by the Dinkelbach method and use Lagrange multiplication The optimal transmission power of cellular users and D2D users is obtained by sub-method and iterative method, thereby reducing the load of the base station and improving the spectral efficiency of the system.

[0067] figure 1 The system model diagram based on the social-aware D2D network is shown. In order to facilitate the statistics of user activity information, according to the coverage of the base station signal, the cell is evenly divided into m×n location...

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Abstract

A power control method based on a social perception D2D network comprises user clustering and intra-cluster D2D user power distribution, and comprises the following steps: firstly, user clustering is carried out: an offset matrix of each user is obtained according to the probability that each user is active in different position plates in a cell; the active position similarity between the users is calculated through the obtained bias matrix and the Frobenius norm, whether the users are similar or not is judged through a preset similarity threshold value, the similar users are divided into the same cluster, and the users in the same cluster communicate with each other through D2D communication; and then performing power control on the D2D users in the cluster: simplifying a mixed integer nonlinear programming problem of the optimal allocation model through a Dinkelbach method, solving an optimal solution by using a Lagrange multiplier method and an iteration method, obtaining an optimal power allocation scheme of the D2D users in the cluster, and maximizing the transmission rate of D2D communication in the cluster while ensuring the service quality of each user.

Description

technical field [0001] The invention designs a power control method based on a socially aware D2D network, and belongs to the technical field of wireless communication. Background technique [0002] Nowadays, with the explosive growth of mobile data traffic and the rapid popularization of intelligent terminal devices, improving system capacity, increasing spectral efficiency, and enhancing user service quality have become urgent issues to be solved. D2D communication technology based on cellular network has attracted much attention due to its advantages of reducing the load of base stations, improving spectrum utilization, and ensuring user service quality. [0003] In the existing D2D communication solutions, the user's geographic location information is an important social information. Users with close geographic locations can communicate with each other directly without transmitting signals through the base station, while users with similar geographic location characteris...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W52/24H04W52/26H04W52/38
CPCH04W52/241H04W52/267H04W52/383
Inventor 郭大鹏仇英辉
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)