METHOD AND APPARATUS FOR FREQUENCY REUSE IN RELAYING COMMUNICATION SYSTEM AND NETWORK NODE THEREFOR

摘要

The present disclosure provides a method and apparatus for frequency reuse in a relaying communication system and a network node therefor. The method may comprise dividing, for access link transmission, system bandwidth into at least three frequency bands; and selecting, from the at least three frequency bands, one frequency band for base stations in all cells, the other frequency bands being reused by relay nodes in the cells, with a frequency reuse factor of at least two. Additionally, in backhaul link transmission, it may use a different frequency reuse scheme. In example scheme, the relay nodes are considered as cell edge users and the system bandwidth may be divided into at least another three frequency bands, one of which is selected for serving relay nodes in a cell such that frequency bands for serving relay nodes are orthogonal between two neighboring cells, the others of which is for serving the macrocell users in the cell. With embodiments of the present invention, interference experienced by users, especially cell edge users, might be reduced greatly and thus their performance will be improved. Additionally, the solution as provided in the present invention has a very low complexity and the signaling design may be compatible with the current LTE standard.