Samsung Electronics Co., Ltd.

Agency for Defense Development

Dankook University Industry Academic Cooperation Foundation

Korea National University of Transportation Industry-academic Cooperation Foundation

Joon Young Cho

Jin Kyu Han

Hyoung Ju Ji

Ju Ho Lee

Young Bum Kim

Soeng Hun Kim

Gert Jan Van Lieshout

Boon Loong Ng

Kyeong In Jeong

Youn Sun Kim

Aris Papasakellariou

Jae Hyuk Jang

Himke Van Der Velde

Sang Bum Kim

In Ho Lee

Jin-Kyu Han

Jianzhong Zhang

Seung-Hoon Choi

Cheng Shan

Yingyang Li

Farooq Khan

Young Jun Hong

Sung Tae Kim

Younsun Kim

Youngbum Kim

Ju-Ho Lee

Juho Lee

Hyojin Lee

Kyeong-In Jeong

Zhouyue Pi

Jung-Soo Jung

Youn-Sun Kim

Sang-Bum Kim

Youn-Hyoung Heo

Bruno Clerckx

Kyung Hun Jang

Jong Sung Kim

Sangmin Ro

Seung Hoon Choi

Hyo Jin Lee

Myung Hoon Yeon

Jung Soo Jung

Ki Il Kim

Jae Chon Yu

Shan Cheng

Young Ho Jung

Hyoung Ju Jl

Ki-Il Kim

Lingjia Liu

Sang Jun Kim

Cheol Mun

Sang Min Ro

Jinkyu Han

Gert-Jan Van Lieshout

Young Han Nam

Jun Il Choi

Ju Hyung Lee

Nam Yoon Lee

Seok Hyun Yoon

Ju Hoo Lee

Man Yeob Lim

Boon-Loong Ng

Yoon Hyoung Heo

Van Der Velde Himke

Jin Kyu Ha

A method and apparatus of a user equipment (UE) for transmitting and receiving data in a wireless communication system. The UE receives first time division duplex (TDD) uplink-downlink configuration information for a first cell and second TDD uplink-downlink configuration information for a second cell, determines whether a subframe in the first cell is a special subframe and the subframe in the second cell is a downlink subframe according to the first and second TDD uplink-downlink configuration information, and determine, if the subframe in the first cell is the special subframe and the subframe in the second cell is the downlink subframe, not to receive a signal on the second cell in orthogonal frequency division multiplexing (OFDM) symbols that overlaps with at least one of a guard period (GP) or uplink pilot time slot in the first cell.

Method and apparatus for transceiving channel related to terminal that supports half duplex transmission in mobile communication system

Disclosed is a method by a terminal in a mobile communication system including receiving, from a base station, CSI measurement configuration information for a serving cell, measuring a first reference signal for obtaining reference signal received power (RSRP) information based on the first CSI configuration information related to the RSRP for the physical layer signaling, transmitting the RSRP information to the base station through the physical layer signaling, measuring a second reference signal for obtaining CSI, and transmitting the CSI to the base station, the first CSI configuration information including information indicating whether to use group based reporting for the RSRP information, and the first CSI configuration information including information indicating a number of antenna ports for the RSRP information when the group based reporting is not configured for the RSRP information.

Channel status information feedback method and apparatus for a distributed antenna mobile communication system

A Channel Status Information (CSI) transmission method and apparatus of a terminal are provided for use in a wireless communication system. In the wireless communication system supporting carrier aggregation, the terminal transmits the CSIs of component carriers without conflict of their transmission time points, resulting in an improvement of system performance. In a case where the transmission time points are determined to overlap unavoidably, the terminal transmits the CSI as compressed.

Method and apparatus for transmitting/receiving CSI in cellular communication system supporting carrier aggregation

The present disclosure relates to a technique for radio link monitoring in a wireless communication system, and to operation procedures of the base station and user equipment and a method for radio link quality evaluation on the basis of the technique. In the method, the user equipment divides the downlink channel bandwidth into multiple frequency ranges, measures channel states for each frequency range, and evaluates the radio link quality based on channel state measurement results. Thereafter, the user equipment sends frequency range quality information to the base station, which may then utilize the same for downlink resource allocation. Hence, it is possible to solve the problem of the existing scheme wherein the user equipment enters the physical layer problem detection state or the radio link failure state although a frequency range usable for service provisioning is present within the downlink channel bandwidth.

Method and device for monitoring frequency domain-based wireless link in wireless communication system

A method of transmitting channel state information. The method includes receiving, from a base station, channel measurement information comprising a plurality of antenna ports to be measured for a serving cell; measuring signals related to the plurality of antenna ports based on the channel measurement information; transmitting reference signal received power (RSRP) information for the plurality of antenna ports based on the measured signals; receiving, from the base station, in response to transmission of the RSRP information, channel state information (CSI) report instruction information for a candidate of a distributed antenna port set including at least one antenna port; measuring a channel state of the at least one antenna port in the candidate; and transmitting the measured channel state to the base station, wherein the candidate of the distributed antenna port set among the plurality of antenna ports is determined based on the RSRP information by the base station.

Methods and apparatuses are provided for Channel State Information (CSI) feedback. An Uplink (UL) grant is received from a Node B. Information included in the UL grant is identified. If the information is mapped to at least one DownLink (DL) Component Carrier (CC) based on configuration information relating to at least one set including the at least one DL CC, at least one CSI corresponding to the at least one DL CC is generated. The generated at least one CSI is transmitted to the Node B.

Channel state information request/feedback method and apparatus

Disclosed are a method and an apparatus for transceiving a channel related to a terminal that supports half duplex transmission in a mobile communication system. The terminal receives scheduling information on multi-carriers having different TDD configurations from a base station, determines whether to receive a downlink channel for a plurality of different subframes of each multi-carrier including at least one special subframe, and transceives a channel to/from the base station depending on whether the downlink channel is received or not.

The present invention relates to a method and device for transmitting and receiving CSI (Channel State Information). A CSI transmission method at a CoMP (Coordinated Multi-Point) device includes steps of receiving a CSI-RS (Reference Signal) from a plurality of transmission points, acquiring an optimal phase difference value causing an optimal channel quality between the plurality of transmission points, based on the CSI-RS, acquiring a CQI (Channel Quality Indicator), based on the optimal phase difference value, and transmitting the CSI including the CQI. According to an embodiment of the present invention, efficient CSI transmission/reception method and device can be provided in a CoMP system.

Method and device for transmitting and receiving channel state information in downlink coordinated multi-point system

The disclosure relates to data transmission method and apparatus for transmitting UL grant or ACK/NACK at flexible subframes in a Time Division Duplex (TDD) system. The data transmission method of a base station according to the present invention includes configuring subframes irrelevant to Hybrid Automatic Repeat reQuest (HARQ) process as flexible subframes; scheduling uplink transmission at the flexible subframes with uplink grant; receiving uplink data transmitted by a terminal at the flexible subframes as scheduled; and transmitting, when decoding the uplink data fails, HARQ acknowledgement/negative acknowledgement (ACK/NACK) or uplink grant to request retransmission of the uplink data. The data transmission method of the present invention is capable of utilizing flexible subframes for uplink transmission without influencing the uplink HARQ process associated with the downlink subframes configured as flexible subframes.

Mobile communication system and data transmission method thereof

The present invention relates to a method for transmitting a backhaul sub frame channel of a base station in a wireless communication system. The method for transmitting a backhaul sub frame channel according to one embodiment of the present invention comprises: creating a downlink relay control channel by coding downlink relay control information that is transmitted to a relay; allocating the created downlink relay control channel to a first slot of a semi-static resource region that is allocated to the relay; and transmitting, to the relay, a backhaul sub frame to which the channel is allocated. Compared to existing control channel transmission techniques, the present invention can minimize overheads. Moreover, the present invention also reduces control channel resources required during retransmission and for the transmission of multiple backhaul subframes.

Method and apparatus for transmitting and receiving backhaul subframe channel in wireless communication system

Growing community of inventors

Gyeonggi-do, South Korea

Joon Young Cho