User discovery and resource allocation method based on social perception in D2D communication

Abstract

The invention discloses a user discovery and resource allocation method based on social perception in D2D communication and belongs to the mobile communication field. The method specifically comprises the following steps of firstly, establishing a D2D communication scene which meets the limitation of the social relationship and the physical location; secondly, carrying out pairing and optimization on D2D communication users in the scene according to a discovery and pairing algorithm of the D2D communication users; thirdly, further computing the entire system throughput CTotal of a base station; fourthly, taking the system throughput CTotal as a target function, combining a limiting condition and adopting a quantum-behaved particle swarm optimization algorithm to solve to obtain an optimal particle position to carry out system subcarrier and power allocation; and lastly, carrying out simulation verification on user discovery and resource allocation based on the social perception in the D2D communication. The method has the advantages that an adaptive abdication under the conflict condition of the residual energy and the request of user nodes is considered; the subcarrier allocation and the power allocation are combined, a resource co-allocation method is provided, and a simulation result shows that the D2D discovery and pairing algorithm based on social perception has better performance.

Description

technical field [0001] The invention belongs to the field of mobile communication, and in particular relates to a user discovery and resource allocation method based on social awareness in D2D communication. Background technique [0002] At present, with the rapid development of mobile communication and Internet technology, people's demand for wireless mobile services (voice, image, video, etc.) has increased dramatically. Various Internet applications are becoming more popular and more mobile, and the number of wireless terminals and mobile wireless data traffic are also increasing dramatically. In order to continuously meet the needs of users, increasing the system capacity becomes the key. [0003] Device-to-Device (D2D) communication, as an important near-field communication technology, has entered the standardization process of the LTE-A system and has become a candidate technology for 5G. D2D communication technology can effectively increase transmission rate, reduce...

AI Technical Summary

Problems solved by technology

However, in the D2D communication scenario, how to effectively realize the D2D user discovery and pairing process, combined with the resource allocation problem, has become a research focus; at the same time, joint power and subcarrier optimization have also become difficulties.

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