Patent ID: 9485757
Filing Date: 2016-11-01
CPC Classification: H04L,H04W

Claim Text:
1. A method of transmitting uplink control information (UCI), performed by a user equipment (UE), in a wireless communication system, the method comprising: configuring a subframe for respectively transmitting a plurality of types of periodic channel state information (CSI) including a first CSI and a second CSI, wherein the first CSI is a rank indicator (RI) indicating the number of layers recommended by the UE, and the second CSI is a CSI which is different from the RI; and transmitting the plurality of types of periodic CSI via a data channel of the subframe, wherein the first CSI and the second CSI are transmitted by multiplexing in the subframe, wherein an acknowledgement/not-acknowledgement (ACK/NACK) is transmitted by being piggybacked on the data channel when it fails to receive a specific field indicating a resource for transmitting the ACK/NACK in a downlink grant for scheduling a data unit.