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    PRE-DFT CDM FOR THE PUCCH
    1.
    发明公开
    PRE-DFT CDM FOR THE PUCCH 审中-公开

    公开(公告)号：EP4287541A1

    公开(公告)日：2023-12-06

    申请号：EP23187070.0

    申请日：2011-01-14

    申请人： LG Electronics Inc.

    发明人： HAN, Seung Hee ,  CHUNG, Jae Hoon ,  MOON, Sung Ho ,  LEE, Moon II

    IPC分类号： H04L1/16 ,  H04L27/26 ,  H04B7/26 ,  H04L1/18 ,  H04L5/00

    摘要： The present invention relates to a wireless communication system. More specifically, the present invention relates to a method for transmitting control signal via a PUCCH in a wireless communication system, and to an apparatus for the method, wherein the method comprises the following steps: joint-coding a plurality of pieces of control information to obtain a single codeword; obtaining a first modulation symbol sequence from the single codeword; obtaining, from the first modulation symbol sequence, a plurality of second modulation symbol sequences corresponding to each slot in the PUCCH; cyclically shifting the plurality of second modulation symbol sequences in a time domain to obtain a plurality of third modulation symbol sequences; performing a discrete Fourier transform (DFT) precoding process on the plurality of third modulation symbol sequences to obtain a plurality of complex symbol sequences in a frequency domain; and transmitting the plurality of complex symbol sequences via the PUCCH.

    METHOD AND APPARATUS FOR TRANSMITTING DOWNLINK REFERENCE SIGNAL IN WIRELESS COMMUNICATION SYSTEM THAT SUPPORTS MULTIPLE ANTENNAS
    2.
    发明公开
    METHOD AND APPARATUS FOR TRANSMITTING DOWNLINK REFERENCE SIGNAL IN WIRELESS COMMUNICATION SYSTEM THAT SUPPORTS MULTIPLE ANTENNAS 审中-公开

    公开(公告)号：EP4160973A1

    公开(公告)日：2023-04-05

    申请号：EP22208541.7

    申请日：2010-08-13

    申请人： LG Electronics Inc.

    发明人： KO, Hyun Soo ,  IHM, Bin Chul ,  LEE, Moon Il ,  CHUNG, Jae Hoon ,  HAN, Seung Hee

    IPC分类号： H04L5/00 ,  H04J13/00 ,  H04B7/0413 ,  H04B7/216 ,  H04L27/26 ,  H04L25/02 ,  H04W52/32

    摘要： The present invention relates to a wireless communication system, and in particular, to a method and an apparatus for transmitting a downlink reference signal in a wireless communication system that supports multiple antennas. The method for transmitting a reference signal for a maximum of eight antenna ports according to one embodiment of the present invention comprises: in a base station, mapping part of a common reference signal for a maximum of four antenna ports into a downlink subframe that includes a 1 st slot and a 2 nd slot and has a general cyclic prefix (CP) configuration; in the base station, mapping a channel status information reference signal for the maximum of eight antenna ports into the downlink subframe, according to a preset pattern; and in the base station, transmitting the downlink subframe into which the common reference signal and the channel status information reference signal have been mapped, wherein the preset pattern defines the channel status information reference signal for the maximum of eight antenna ports to be mapped onto two OFDM symbols of the data region in the downlink subframe, with the two OFDM symbols being spaced apart by one OFDM symbol, and wherein part of the common reference signal for the maximum of four antenna ports is limited to the common reference signal for a maximum of two antenna ports.