Patent ID: 9084153
Filing Date: 2015-07-14
Classification: H04L,H04W

Abstract:
1. A method for reporting Channel State Information (CSI) at a User Equipment (UE) in a wireless communication system, the method comprising: receiving configuration information for a periodic CSI report from a first transmission point; and transmitting, to the first transmission point, a CSI report for a transmission point of plural transmission points through a subframe of subframes being periodically configured according to the configuration information, the transmission point corresponding to the subframe, wherein, if rank information reported to the first transmission point prior to the CSI report is equal to or less than a threshold value, the one or more subframes corresponding to a second transmission point are used to transmit a CSI report for multi-transmission point cooperative transmission; wherein if the rank information reported to the first transmission point prior to the CSI report is greater than the threshold value, the one or more subframes corresponding to the second transmission point are used to transmit a CSI report for single transmission point transmission.