Lg Electronics Inc.

Blackberry Corporation

Dentons US Llp

Bin Chul Ihm

Jin Young Chun

Moon Il Lee

Wook Bong Lee

Hyun Soo Ko

Jae Hoon Chung

Sung Ho Park

Su Nam Kim

Ji Won Kang

Ja Ho Koo

Ki Tae Kim

Seung Hee Han

Jin Sam Kwak

Jae Wan Kim

Yong Suk Jin

Jin Hyuk Jung

Dong Guk Lim

Jin Soo Choi

Hyun Phill Ko

Han Gyu Cho

Ki Seon Ryu

Jae Won Chang

Yeong Hyeon Kwon

Sung Ho Moon

Ki Jun Kim

Young Soo Yuk

Sunam Kim

Joon Kui Ahn

Min Seok Noh

Yong Ho Kim

Young Woo Yun

Jian Xu

Jeong Ki Kim

Moon Ii Lee

Dong Cheol Kim

Ae Ran Youn

Chang Jae Lee

Hyunsoo Ko

Wookbong Lee

Hee Jeong Cho

Seung Hyun Kang

Hyun Woo Lee

Suk Woo Lee

Min Seok Oh

Young Seob Lee

Jin Soo Lee

Jin-Young Chun

Jae Won Jang

Jea Hoon Chung

Jin-young Chun

Jiwon Kang

Jinsoo Choi

Jinyoung Chun

Sungho Park

In Uk Jung

Dong Kyu Kim

Doo Hyun Sung

Seunghyun Kang

Dong Ku Kim

Jaho Koo

Woo Suk Kwon

Seunghee Han

Hyukjin Chae

Sung Jun Park

Han Byul Seo

Sung Ho Cho

Yong Hwan Kim

Moonil Lee

Sung Hyun Moon

Kitae Kim

Hyung Tae Kim

Inkyu Lee

Yo Han Kim

Ki Ho Nam

Hyuk Jin Chae

Sergey E Sergeyev

Intae Hwang

Alexander Flaksman

Jang Hoon Yang

Chang Kyung Sung

Janghoon Yang

Xu Jian

Il Moon Lee

Victor Ermolaev

Sun Nam Kim

Ki Sun Ryu

Cheolwoo Yoo

Yohan Kim

The present invention relates to a wireless communication system and provides an efficient control information transmission method and apparatus for supporting a multiple antenna transmission technique. A method is provided for transmitting downlink hybrid automatic repeat request (HARQ) information related to an uplink multiple codeword transmission and includes receiving the uplink multiple codeword transmission, generating HARQ information related to each of the multiple codewords based on a result of decoding each of the multiple codewords, modulating the HARQ information, and transmitting the modulated HARQ information via one or more physical HARQ indicator channels (PHICHs).

Efficient control information transmission method and apparatus for supporting multiple antenna transmission technique

A method for transmitting a reference signal in a multi-antenna system is provided. The method includes: selecting at least one orthogonal frequency division multiplexing (OFDM) symbol in a subframe containing a plurality of OFDM symbols; allocating a channel quality indication reference signal (CQI RS) capable of measuring a channel state for each of a plurality of antennas to the selected at least one OFDM symbol; and transmitting the CQI RS, wherein the CQI RS is allocated to an OFDM symbol which does not overlap with an OFDM symbol to which a common reference signal to be transmitted to all user equipments in a cell or a dedicated reference signal to be transmitted to a specific user equipment in the cell is allocated.

Method and apparatus for transmitting reference signal in multi-antenna system

A method of a user equipment (UE) operating in a wireless communication system using orthogonal subcarriers, the method including generating, by the UE, Orthogonal Frequency Division Multiplexing (OFDM)-based symbols, wherein each OFDM-based symbol includes a cyclic prefix (CP) and a data part, transmitting, by the UE, a first subframe including N OFDM-based symbols, wherein N is an integer and transmitting, by the UE, a second subframe including N OFDM-based symbols, following the first subframe, wherein, when the first subframe and the second subframe are overlapped based on a timing adjustment command received from a base station, the first subframe is transmitted completely while the second subframe is transmitted partially without an overlapped part of the second subframe.

Method of resolving overlaps in data transmission and user equipment therefor

A method for transmitting a channel status information reference signals (CSI-RSs) for a maximum of eight antenna ports includes mapping the CSI-RSs for a maximum of eight antenna ports onto a data region of a downlink subframe having a normal cyclic prefix (CP) configuration according to a predetermined pattern; and transmitting the downlink subframe to which the CSI-RSs mapped, wherein the predetermined pattern defines the CSI-RSs to be mapped onto two OFDM symbols of the data region in the downlink subframe and mapped to at least one of four subcarrier positions in each of the two OFDM symbols, and wherein the four subcarrier positions defined by the predetermined pattern may be two consecutive subcarrier positions and two other consecutive subcarrier positions spaced apart by four subcarriers.

Method and apparatus for transmitting downlink reference signal in wireless communication system that supports multiple antennas

A method of transmitting a reference signal by a base station in a wireless communication system is provided. The method includes: generating a plurality of reference signals for channel measurement, wherein the plurality of reference signals for channel measurement are different types; and transmitting the plurality of reference signals for channel measurement, wherein the plurality of reference signals for channel measurement are transmitted using one or more subframes as a duty cycle.

Apparatus and method for transmitting a reference signal in a wireless communication system

A method of measuring interference to perform efficient data communication is disclosed. A method of measuring interference of neighboring cells comprises allocating one or more first resource elements, to which pilot signals are allocated, to predetermined symbol regions included in a first resource block; allocating one or more second resource elements for measuring interference of the neighboring cells to a first symbol region of the predetermined symbol regions; and measuring interference of the neighboring cells using the one or more second resource elements.

Method of measuring interference

According to one aspect of the present invention, values which are specifically defined for each user equipment are reflected when resource allocation/mapping of downlink/uplink ACK/NACK channels is performed, so as to vary uplink/downlink ACK/NACK information transmitting resources for each user equipment allocated to the same downlink/uplink resource. According to another aspect of the present invention, nodes for transmitting uplink/downlink ACK/NACK information vary for each user equipment allocated to the same downlink/uplink resource. According to the present invention, even when downlink/uplink signals for a plurality of user equipment are transmitted from the same resource, uplink/downlink ACK/NACK signals of the plurality of user equipment are transmitted from different resources, thereby reducing interferences among ACK/NACK signals of the plurality of user equipment.

Method for transmitting ACK/NACK signals, and base station and user equipment for the method

An interference removal method in a multi-node system is provided. A user equipment (UE) receives node information from a base station, a first signal from a first node, and a second signal from a second node. The first signal and the second signal are used to remove an interference. The node information includes configuration information related to the first signal and the second signal. The configuration information includes information related to at least one of a number of antenna ports of the first node and the second node, a number of data streams, and a node identifier (ID). A pattern of the first signal or the second signal is determined according to at least one of the number of antenna ports of the first node and the second node, the number of data streams, and the node ID.

Interference removal method in multi-node system and terminal using the same

A method of transmitting data in a wireless communication system is provided. The method includes generating duplicate data by using repetition coding, the duplicate data being the same as original data, shifting the phase of the duplicate data, and transmitting the original data and the phase-shifted duplicate data. The duplicate data is mapped to a modulation symbol having a different size or phase as that of the original data, thus to reduce the PAPR unlike the general repetition coding.

Method of transmitting data using repetition coding

Growing community of inventors

Anyang-si, South Korea

Bin Chul Ihm