Samsung Electronics Co., Ltd.

Purdue Research Foundation

Industry-University Cooperation Foundation Korea Aerospace University

Snu Rdb Foundation

Imperial Innovations Limited

Korea University Industrial Academic Collaboration Foundation

Imperial Lnnovations Limited

Bruno Clerckx

Ki Il Kim

David James Love

Jin Kyu Han

Yongxing Zhou

Sung Jin Kim

Young Jun Hong

Il Han Kim

Youngbum Kim

Younsun Kim

Cheng Shan

Jianzhong Zhang

Chenxi Hao

Joon Young Cho

Seunghoon Choi

In Ho Lee

Hyoung Ju Ji

Farooq Khan

Juho Lee

Jin-Kyu Han

Zhouyue Pi

Chang Soon Park

Ho-Kyu Choi

Seung-Hoon Choi

Sang-Woo Lee

Kyung Hun Jang

Youn Sun Kim

Cornelius Van Rensburg

Hyeon-Woo Lee

Young Bum Kim

Jun Il Choi

Taejoon Kim

David Mazzarese

Junil Choi

Goo Chul Chung

Heun Chul Lee

Young Ho Jung

Tae Joon Kim

Seung Young Park

Shuangfeng Han

Chun Kin Au Yeung

Joon-Il Choi

Obadamilola Aluko

Ki Cheol Kim

Song-Nam Hong

Eun-Yong Kim

Joon-Ho Park

Lingjia Liu

Inkyu Lee

Jun Woo Choi

Hye Won Lee

Jung Hoon Suh

Nam Yoon Lee

Duck Dong Hwang

Sung Hyun Choi

Hae Wook Park

Chun Kin Au-Yeung

Hua Li

Han Bae Kong

Keun Chul Hwang

Hui Won Je

Seok Hwan Park

Goochul Chung

Dae Young Park

Sung Woo Park

Ki Ii Kim

Sae Hyung Park

Ki Li Kim

Jun Ii Choi

A method and system for resource allocation is provided. A method includes transmitting, to the terminal, information including first information indicating a set of resource blocks associated with a control channel and second information indicating a number of symbols corresponding to the set of resource blocks by a radio resource control (RRC) message; transmitting, to the terminal, control information including information for downlink data on the control channel identified based on the first information and the second information; and transmitting, to the terminal, the downlink data on a data channel based on the control information. The set of resource blocks includes at least one control channel resource, and wherein a search space for the control channel of the terminal is defined based on an aggregation level, and a number of the at least one control channel resource.

Apparatus and method of resource allocation for data and control channels in a wireless communication system

A method and system for resource allocation is provided. A method includes identifying a set of resource blocks associated with a control channel for a terminal; transmitting, to the terminal, information on the set of resource blocks on a radio resource control signal, the information including first information indicating resource blocks included in the set of resource blocks and second information indicating a number of symbols corresponding to the set of resource blocks; transmitting, to the terminal, control information including information for downlink data on the control channel identified based on the first information and the second information; and transmitting, to the terminal, the downlink data on a data channel based on the control information. The set of resource blocks includes at least one control channel resource. A search space for the control channel of the terminal is defined based on an aggregation level, a number of the at least one control channel resource, and a number of a candidate associated with the control channel.

A method and system for resource allocation is provided. A method includes identifying bit map information on a set of resource blocks associated with a control channel for a UE, through radio resource control (RRC) signaling from a base station; receiving, from the base station, control information for downlink data on the control channel identified based on the bit map information; and receiving, from the base station, the downlink data on a data channel based on the control information. The control information is received on at least one control channel resource, which is included in the set of resource blocks. A search space for the control channel of the UE is defined based on an aggregation level, a number of the at least one control channel resource included in the set of resource blocks, and a number of a candidate associated with the control channel.

Provided is a feedback method and apparatus in a multiple-input multiple-output (MIMO) communication system. A terminal may determine a preferred pre-coding matrix for a neighboring terminal, based on a reference rank determined by a base station and a preferred pre-coding matrix of the terminal. The terminal may calculate a channel quality indicator (CQI) based on the preferred precoding matrix for the neighboring terminal, and may feed the CQI back to the base station.

Method and apparatus for feedback in multi-user multiple-input multiple-output (MU-MIMO) communication system

Provided is an uplink feedback channel allocation method and apparatus used to feedback data to indicate whether data packets corresponding an enhanced physical downlink control channel (E-PDCCH) were successfully decoded. A terminal may use an additional resource area of an uplink feedback channel or may use an empty resource area of the uplink feedback channel to which feedback information of a data packet corresponding to a physical downlink control channel (PDCCH) is not allocated, to perform feedback.

Method and apparatus of allocating uplink feedback channel for feeding data corresponding to an enhanced-physical downlink control channel (E-PDCCH)

A method and system for resource allocation for data and control channels is provided. A downlink transmission method of a base station in a the system includes determining, by the base station, whether resources for a terminal are restricted; determining a sub-set of resource blocks for the terminal from among all resource blocks, if the resources for the terminal are restricted; transmitting information about the sub-set of the resource blocks to the terminal; and allocating a first sub-sub-set of the sub-set of the resource blocks for control channel transmission, and a second sub-sub-set of the sub-set of the resource blocks for data channel transmission.

A method for estimating a channel in a wireless communication system in which a plurality of terminals and a base station communicate with each other, according to one embodiment of the present invention, comprises the steps of: receiving reference signals transmitted through a plurality of slots; and estimating a channel by using the reference signals. Here, for the channel estimation, the number of reference signals received through at least one slot among the plurality of slots is different from the number of reference signals received through the other slots.

Method and device for estimating channel in wireless communication system

A method provides mixed analog/digital beamforming by a transmitter in a mobile communication system. The method includes converting a modulation symbol into a parallel symbol stream, performing digital beamforming on the parallel symbol stream, performing an IFFT operation on the digital-beamformed parallel symbol stream to generate a time-domain symbol, converting the IFFT-operated time-domain symbol into a serial time-domain symbol, inserting a CP into the serial time-domain symbol, performing a DAC operation on the CP-inserted symbol to generate an analog signal, and performing analog beamforming by multiplying the analog signal by the analog beamforming precoder optimized for the first subcarrier transmitted through at least one RF channel.

Method and apparatus for mixed analog/digital beamforming

A method for transmitting and receiving a codebook subset restriction bitmap is provided. The Codebook Subset Restriction (CSR) bitmap transmission method of an evolved Node B (eNB) in transmission mode 9 for communication with 8 antenna ports includes generating a CSR bitmap including bits corresponding to restricted precoding matrix indicators and rank indicators that are not allowed for reporting and transmitting the CSR bitmap to a User Equipment (UE). The CSR bitmap comprises 53 bits corresponding to a first codebook and 56 bits corresponding to a second codebook, the 53 bits corresponding to a first codebook comprise 16, 16, 4, 4, 4, 4, and 1 bits for layers, and, respectively, and the 56 bits corresponding to a second codebook comprise 16, 16, 16 and 8 bits for layers, and, respectively.

Method and apparatus for transmitting and receiving codebook subset restriction bitmap

A multiple input multiple output (MIMO) communication system using a first codebook and a second codebook is provided. The first codebook and the second codebook may independently exist, or may exist in a form of an overall codebook in which the first codebook and the second codebook are integrated with each other. A receiver may extract a first precoding matrix indicator from the first codebook, and may extract a second precoding matrix indicator from the second codebook. The receiver may also extract the first precoding matrix indicator and the second precoding matrix indicator from the overall codebook. The first precoding matrix indicator and the second precoding matrix indicator may be fed back to a transmitter. The transmitter may determine a precoding matrix based on the first precoding matrix indicator and the second precoding matrix indicator.

Multiple input multiple output communication system using codebook corresponding to each reporting mode

Provided are a method and device for low-complexity feedback in a multiuser and multipoint cooperative communication system. The base station in the multiuser and multipoint cooperative communication system transmits a feedback stop signal to a terminal in order for the terminal receiving the feedback stop signal to stop feedback for a predetermined period. The terminal receiving the feedback stop signal stops the feedback of channel information for a period indicated by the feedback stop signal.

Method and device for low-complexity feedback in a multiuser and multipoint cooperative communication system

A system and method for transmitting signals via multi-input single-output (MISO) broadcast channel with imperfect channel state information at the transmitter (CSIT). The transmitter receives each CSI of from the plural receivers, determines a transmit power and a transmission rate based on the CSI qualities of the plural receivers calculated from the each CSI, and transmits the signal using the transmit power and the transmission rate. The signal comprises a user specific message, a first common message and a second common message to compensate imperfect CSIT.

Method and apparatus for transmitting signals via MISO broadcast channel with imperfect CSIT

A transmitter and a receiver of a multiple input multiple output (MIMO) communication system may use two codebooks to share channel information. When the transmitter uses eight transmit antennas, two codebooks may be defined. When the receiver generates two precoding matrix indicators from two codebooks, a combination of the two precoding matrix indicators may indicate a single precoding matrix. Precoding matrix candidates may also be defined.

Codebook for eight transmit antennas and multiple input multiple output communication system using the codebook

A control information transmission and reception method based on a spatial-multiplexing gain, are provided. The control information may be transmitted by obtaining the spatial-multiplexing gain using an E-PDCCH region, and thus, a transmission efficiency of the control information may be improved. The common control information used for decoding the E-PDCCH may be transmitted via a PDCCH, and thus, a base station supporting both a general terminal and an enhanced terminal may effectively transmit the control information. Information associated with an indicator indicating whether the E-PDCCH is to be used during a subsequent resource allocation period may be transmitted, and thus, whether decoding with respect to the E-PDCCH is to be performed during the subsequent allocation period may be determined.

Method of transmitting and receiving control information based on spatial-multiplexing gain

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Seoul, South Korea

Bruno Clerckx