Patent ID: 9461798
Filing Date: 2016-10-04
CPC Classification: H04L,H04W

Claim Text:
1. A method for transmitting control information using a Physical Uplink Control Channel PUCCH) format 3 by a communication apparatus in a radio communication system, comprising: receiving a radio control resource (RRC) message including a first set of four PUCCH resource values for the PUCCH format 3; detecting a Physical Downlink Control Channel (PDCCH) signal; receiving a Physical Downlink Shared Channel (PDSCH) signal corresponding to the PDCCH signal on a secondary cell (SCell); and determining one or more PUCCH resources based on a 2-bit value of a transmit power control (TPC) field of the PDCCH signal, wherein, if a single antenna port transmission mode is configured for PUCCH format 3 transmission, the RRC message has no further set of four PUCCH resource values for the PUCCH format 3, and the 2-bit value of the TPC field is mapped to one of the first set of four PUCCH resource values for a first antenna port, and wherein, if a multi-antenna port transmission mode is configured for the PUCCH format 3 transmission, the RRC message further comprises a second set of four PUCCH resource values, and the 2-bit value of the TPC field is mapped to one of the first set of four PUCCH resource values for the first antenna port and mapped to one of the second set of four PUCCH resource values for a second antenna port.