Patent ID: 9065527
Filing Date: 2015-06-23
Classification: H04B,H04L,H04W

Abstract:
1. A relay station in a communication system in which a base station and a mobile station communicate with each other via the relay station, the relay station comprising: a receiver that receives downlink control information and first reference signals, both being mapped in a first region of a Precoding Resource block Group (PRG), and receives downlink data and second reference signals, both being mapped in a second region of the PRG, from the base station, the PRG consisting of several resource blocks (RBs) and formed by dividing a frequency domain including a plurality of RBs, the several RBs in the PRG being consecutive in the frequency domain, the first region of the PRG being provided by a portion of one RB of the PRG, and the second region being provided by a remaining portion of the one RB and remaining RB(s) of the PRG; and a demodulator that demodulates the downlink data mapped in the second region using the second reference signals mapped in the second region, without using the first reference signals mapped in the first region.