Abstract:
A transmission power control apparatus and a method thereof in a wireless communications system are provided to control the power of non-adaptive signal transmission by a UE(mobile user equipment). A UE uses transmission power 1(Tx Power 1)(412) for PUSCH transmission power control and data MCS 1(Modulation and Coding Scheme 1)(414) in initial transmission(410) not including the UCI(Uplink Control Information) or the SRS(Sound Reference Signal) electrical transmission. In the HARQ retransmission(420) about the same TB(Transport Block) including UCI or the SRS electrical transmission, the UE uses the transmission power 2(Tx Power 2) for the PUSCH transmission power control. The spectrum efficiency of MCS2 is higher than MCS1.
Abstract:
A method for trasceiving uplink channel sounding reference signals is provided to satisfy a single carrier transmission characteristic in SC-FDMA, even in case one terminal needs to transmit CS(Channel Sounding), and RS(Reference Signal) control channel at one subframe. An uplink system bandwidth(601) consists of N first RUs(602) and M second RUs(603) used for controlling channel, and a center band between the first and second RUs. In case of EUTRA, ACK/NACK symbols are transmitted using 4 LBs(Long Blocks), and three RS are transmitted using 3 LBs at control channel slots(608,609,610). As shown in the figure, The CS and RS channels(600) can be multiplexed with other uplink channels. The CS and RS channels are located a first LB area of center band where data channel is mapped. The CS and RS transmitted from a plurality of terminals became CDM(Code Domain Multiplexing) using cyclic shift of ZC(Zadoff-Chu) sequence, or multiplexed in the different frequency resource.
Abstract:
사용자 단말(User Equipment; UE)이 제 1 세트의 리소스들을 통해, 제 1 타입의 제어 채널 요소(Control Channel Element; CCE)들을 포함하는 제 1 타입의 물리 하향링크 제어 채널(Physical Downlink Control CHannel; PDCCH)을 수신하고, 제 2 세트의 리소스들을 통해, 제 2 타입의 CCE들을 포함하는 제 2 타입의 PDCCH을 수신하고, 또한 상기 제 1 타입의 PDCCH를 검출한 것에 대한 응답으로 또는 상기 제 2 타입의 PDCCH를 검출한 것에 대한 응답으로 확인응답 신호를 전송하기 위한 리소스를 결정하는 방법 및 장치가 제공된다.