Patent ID: 9294256
Filing Date: 2016-03-22
CPC Classification: H04B,H04L,H04W

Claim Text:
1. A method for notifying common reference signal (CRS) patterns, used for notifying CRS patterns in a coordinated multiple point (CoMP) transmission system, the method comprising: transmitting first downlink control information (DCI) to user equipment (UE) to inform the UE of an aperiodic channel status information (CSI) feedback set and a CoMP transmission scheme to be applied to the UE, wherein the CoMP transmission scheme includes a plurality of possible combinations of transmission points that transmit physical downlink shared channels (PDSCH) to the UE; transmitting second DCI to the UE for notifying a CRS pattern to the UE based on the first DCI; determining, using processing circuitry, transmission points for carrying out CoMP transmission in the CoMP transmission scheme in accordance with CSI feedbacks of the UE; determining, using the processing circuitry, corresponding CRS patterns in accordance with a current sub-frame transmission situation of each of the transmission points; and determining, using the processing circuitry, bits to be transmitted in the second DCI in accordance with correspondences between preconfigured bits and a plurality of possible CRS patterns in the CoMP transmission scheme.