METHOD OF RESOURCE ALLOCATION FOR DEVICE-TO DEVICE COMMUNICATION BASED ON DISTANCES IN CELLULAR SYSTEM AND APPARATUS THEREOF

摘要

The present invention relates to a method of allocating resources for D2D communications in a cellular system based on distance information, and to an apparatus thereof. According to the present invention, a method of allocating resources of each terminal by using a base station in a cellular system including a base station, a plurality of cellular terminals existing in a cell managed by the base station, and a plurality of D2D terminal pairs, comprising the steps of: searching for a cellular terminal located within a predetermined first radius from the base station from among the cellular terminals as a cellular terminal to be used for resource sharing; setting a priority for each of the searched cellular terminals as giving a higher priority to a cellular terminal which is more closely located to the base station; selecting at least one D2D terminal pair to be shared with a frequency resource which the cellular terminal has from among the D2D terminal pairs, and sequentially progressing the selection of the D2D terminal pairs from a cellular terminal having the highest priority; and allocating a frequency resource of a corresponding cellular terminal to the selected D2D terminal pairs and sharing the frequency resource. Accordingly, a base station is capable of collecting distance information between nodes in a cellular system for supporting direct communications between terminals and effectively allocating a frequency resource for D2D communications by using the same.