D2D link selection method of social information fusion in multi-cell scenes

Abstract

The present invention discloses a D2D (Device-to-Device) link selection method of social information fusion in multi-cell scenes. The method comprises the following steps: the step 1: performing degeneration of multi-cell D2D communication scenes into D2D communication scenes for coexistence of two cells of origin for researching, performing classification of users through a base station according to the user position distribution in a network to allow the users to perform interference distinguishing; the step 2: employing an alliance having untransferable effectiveness to form a game to perform link selection for an in-cell D2D pair of the same cell where two users are located; and the step 3: performing link selection of cross-cell D2D pairs of two cells where two users are located, and considering the equalization of the cross-cell D2D pairs for the link resource usage of the two cells in the link selection process. The link selection method is simple to realize and small in signaling cost, and can ensure the equalization of the cross-cell D2D pairs for the link resource usage of two cells.

Description

technical field [0001] The present invention relates to a D2D link selection scheme for fusing social information in a multi-cell scenario. Specifically, for a cellular network where multiple cells coexist, consider intra-area D2D pairs (two users performing D2D communication are in the same cell) and cross-area D2D pairs (two users performing D2D communication are located in the same cell). A link selection method when two cells) multiplex cellular user links. Background technique [0002] In the next-generation cellular network, mobile data traffic is rapidly increasing, and service content tends to be diversified. In order to alleviate the pressure on the base station and make full use of the large number of widely distributed mobile smart terminals in the network, D2D (Device-to-Device) communication has attracted more and more attention. D2D communication allows end users with close distances to communicate directly without going through the transfer of the base stati...

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Problems solved by technology

In addition, when considering the link selection of inter-area D2D pairs, the balance of link resource usage in two cells by inter-area D2D pairs cannot be ignored

"An Advanced Spectrum Allocation for the Across-cell D2D communication in LTE Network with Higher throughput" published on pages 30 to 37 of Volume 13, Issue 4 of China Communications in 2016, based on the difference in traffic between two adjacent cells, inter-area D2D Research on the spectrum allocation of D2D pairs, but this paper only considers the allocation of spectrum resources to cross-regional D2D pairs, and does not specify which spectrum resources should be used for a certain D2D pair

In this way, the normal communication needs of the cellular user who can contribute the link to the D2D pair may not be met, and the D2D pair cannot reuse the link of the cellular user at this time.

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