A 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 awareness in D2D communication, which belongs to the field of mobile communication. Specifically: firstly, establish a D2D communication scenario that satisfies social relationship and physical location constraints; pair and optimize the D2D communication users in the scenario according to the D2D communication user discovery and pairing algorithm; further calculate the entire system throughput C of the base station Total ; Then, the system throughput C Total As the objective function, combined with the constraints, the quantum particle swarm algorithm is used to solve the problem, and the optimal particle position is obtained, so as to allocate the subcarriers and power of the system; finally, the user discovery and resource allocation based on social perception in D2D communication are simulated and verified ; The advantage is that the back-off mechanism in the case of user node remaining energy and request conflict is considered; and combined with subcarrier and power allocation, a joint resource allocation method is proposed. According to the simulation results, it can be seen that the socially aware D2D discovery and pairing algorithm 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.

Images