D2D (Device-to-Device) communication content distribution scheme based on social network

Abstract

The invention relates to a three-dimensional matching algorithm applied to a communication system, in which Device-to-Device (D2D) communication based on a cellular network is combined with a social network. For performing sharing and pushing of contents under a condition that users have different preferences to the contents, and maximizing the total transmission rate of a D2D communication link of the system while enabling the users to have relatively high satisfaction degrees to the contents obtained by sharing, the algorithm takes the transmission rate between the users and weighed by the close degree of the social relationship as an optimization object based on sufficient considering of social layer information and physical layer information of the communication system; therefore, matching among the users, shared contents and spectrum resources can be effectively optimized; user matching and resource distributing problems can be solved; on the basis of a pricing strategy, the algorithm can effectively solve the user request conflict problem; and, on the premise that the operation complexity is greatly reduced, matching among the users, the shared contents and the spectrum resources in the system is in a steady state finally.

Description

technical field [0001] The invention belongs to the field of wireless communication, and specifically relates to a three-dimensional matching method applied in a communication system combining Device-to-Device (D2D) communication based on a cellular network and a social network, which can comprehensively consider the physical layer conditions and the user Based on the social relationship among users, the matching between users, shared content and spectrum resources is optimized, so as to effectively solve the problems of user pairing and spectrum resource allocation. Background technique [0002] With the popularization of intelligent communication terminals and the continuous emergence of mobile multimedia services, users have an increasing demand for higher wireless transmission rates in communication systems. Device-to-Device (D2D) communication technology is regarded as the next-generation cellular communication technology. It is a key technology that can improve spectru...

AI Technical Summary

Problems solved by technology

[0004] In D2D communication, many works have studied how to use matching theory to effectively solve the spectrum resource allocation problem without considering the user's preference for content, that is, only solve the double matching between the user and the spectrum resource

However, due to the uncontrollability and uncertainty of user behavior in social networks, it is almost difficult to find a suitable model to describe the nature of user behavior, so it is necessary to find a suitable method to describe the social relationship between users

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