Samsung Electronics Co., Ltd.

Korea Advanced Institute of Science and Technology

Postech Academy-industry Foundation

Cornell University

Jong Bu Lim

Kyung Hun Jang

Tae Soo Kwon

Hyun Ho Choi

Chang Yong Shin

Hyo Sun Hwang

Won Jae Shin

Won Jong Noh

Won-Jae Shin

Dong Ho Cho

Hyun Gi Ahn

Dan Keun Sung

Gi Hong Im

Byoung Hoon Jung

Woo Geun Ahn

Ui Kun Kwon

Young Jun Hong

Eung Sun Kim

Young-Doo Kim

Sung Ho Chae

Sang Joon Kim

Taeyoung Kim

Wei Yu

Sang-Woon Jeon

Mi Suk Huh

Ji Young Cha

Chan Ho Choi

Hyunil Yoo

Ji Hoon Lee

Jeehwan Noh

Sae-Young Chung

Han Sung Leem

Jong Ho Bang

Nam Jeong Lee

Ju Yong Lee

Amir Salman Avestimehr

Tae-Won Yune

Kab Seok Ko

Byung Hoon Jung

Sae Young Chung

Seon Yeob Baek

Ibrahim Issa

Silas L Fong

A Salman Avestimehr

Young-ho Jung

Ilan Shomorony

Salman A Avestimehr

A method for operating a terminal in a wireless communication system is provided. The method includes receiving, from a base station, system information comprising information indicating a waveform for a second message, transmitting, to the base station, a random access preamble signal, receiving, from the base station, a first message comprising a random access response, and transmitting, to the base station, the second message using a resource allocated by the first message.

Apparatus and method for performing initial access in wireless communication system

A method for controlling a first node transmitting a transmission message to a plurality of second nodes may be provided. The method includes dividing the transmission message into at least one sub-message, encoding the at least one sub-message to a data stream, determining a first transmission direction of the data stream toward at least one of the plurality of second nodes, based on a polynomial of a channel gain between the first node and the at least one of the plurality of second nodes, and transmitting the data stream to the at least one of the plurality of second nodes, based on the determined first transmission direction.

Source, relay, and destination executing cooperation transmission and method for controlling each thereof

Provided are a base station and a plurality of member nodes for transmitting and receiving network coding based multicast traffic. The base station may transmit multicast traffic, and the member node may transmit an acknowledgement (ACK) signal based on received multicast traffic. A determination made be made as to whether the multicast traffic is to be retransmitted, based on a number of member nodes transmitting ACK signals.

Base station and a plurality of member nodes for transmitting and receiving network coding based multicast traffic

A communication method and apparatus for cancelling interference are provided. The communication apparatus includes an active element configured to receive a first signal and a parasitic element configured to receive a second signal. A third signal is generated by cancelling interference in the first signal using the second signal.

Communication method and apparatus

A method of secure communication in a transmitter, includes determining a method of generating a training sequence that is shared with a receiver. The method further includes generating the training sequence based on the method of generating the training sequence, and secret information. The method further includes communicating with the receiver based on channel information derived from the training sequence.

Method and apparatus for secure communication and determining secret information

A method and apparatus to control interference in a relay node are provided and include simultaneously receiving a symbol from source nodes, adjusting channel coefficients; and relaying the symbol to destination nodes with adjusted channel coefficients. The simultaneously receiving and the relaying are performed during a symbol transmission process between the source and destination nodes.

Method and apparatus to control interference in multi-hop network and relay node and node pair using the method

Methods and apparatuses for transmitting data based on cooperation of member nodes belonging to a multicast group is provided. The method may include transmitting multicast packets through a first communication network to member nodes belonging to a multicast group and the member nodes receiving the same multicast packets; and retransmitting the multicast packets upon determination that no member node has completed reception of the multicast packets.

Apparatus and method for transmitting data based on cooperation of member nodes belonging to multicast group

Provided are a communication method and apparatus for device-to-device (D2D). More particularly, the communication method for D2D includes configuring a network topology using at least one cooperating base station to communicate among devices included in multiple heterogeneous cells, creating an association between multiple device pairs and at least one base station based on configuring the network topology, and determining a cooperation context for communication among the multiple device pairs is provided. The communication apparatus carries out such a method.

Communication method and apparatus for device-to-device (D2D)

A method of controlling interference of relay nodes and node pairs in a multi-hop network, includes relaying signals received from source nodes among the node pairs to destination nodes pairing with the source nodes, and cancelling a part of interference signals between the node pairs by controlling channel coefficients of the relay nodes. The destination nodes are configured to cancel residual interference signals among the interference signals, using the signals received by the destination nodes.

Method of controlling interference in multi-hop network based on MIMO system and relay node and node pair using the method

Communication methods of a macro base station which collects position information about a mobile micro base station and that is served by the macro base station, predicts a channel between the macro base station and the micro base station, and performs a handover between the macro base station and the micro base station based on a state of the predicted channel is provided.

Multi-cell communication method and system of a mobile terminal, a micro base station, and a macro base station

Provided are examples of methods of a vehicular moving relay in a communication system including the vehicular moving relay, a moving terminal, and a macro base station. Also provided is an example of a terminal. The vehicular moving relay may repeatedly transmit data to a vehicular moving terminal without requesting a handover from a macro base station to the vehicular moving relay, using a unique code that is allocated to the vehicular moving terminal from the macro base station.

Communication method of a macro base station, a vehicular moving relay, and a vehicular moving terminal

A method and apparatus to manage interference between idle devices is provided. The method may include determining a pair of a target transmission node and a target reception node among nodes included in a multi-hop network. The method includes determining idle devices cooperating to manage interference in the communication based on a transmission mode determined for communication. The method determines and transmitting coordination information for communication between the pair of the target transmission node and the target reception node, to nodes participating in the communication and the cooperating idle devices.

Method and apparatus to manage interference between idle devices

A multi-cell communication system comprises at least a first base station and first terminal and a second base station and second terminal. When the first and second base stations need to perform interference control, the first terminal may relay a message related to the interference control between the first base station and the second base station. That is, the first terminal may transfer a message related to the interference control from the first base station to the second base station, and a message related to the interference control from the second base station to the first base station. As such, the first base station and the second base station can transmit/receive messages that are for performing interference control via the first terminal.

Multi-cell communication system that performs interference control using relay of terminal

A relay and a terminal in a multi-pair two-way network and a communication method thereof is provided. A communication method of a relay of a network including K transmit-and-receive pairs including a plurality of terminals, with the relay including M antennas and each of the terminals including N antennas, including accessing a codebook including codewords, the codebook being configured to enable effective channels from the K transmit-and-receive pairs to the relay to be aligned in independent dimensions, respectively, when the K transmit-and-receive pairs transmit signals simultaneously, each of the effective channels being aligned based on one of the codewords, selecting one or more of the codewords indicating the effective channels from the K transmit-and-receive pairs to the relay, respectively, and transmitting information associated with the selected codewords to corresponding ones of the K transmit-and-receive pairs.

Relay and terminal in multi-pair two-way relay network and communication method thereof

A communication security method and apparatus of a first node and a second node are provided. The first node and the second node communicate with each other based on a full duplex communication scheme using a near field. In the communication security method and apparatus, information to be transmitted may be encrypted based on received information and the encrypted information may be transmitted, in a TX node and an RX node. The communication security method and apparatus prevent an additional node from decrypting the information, and ensure transmission and reception of reliable data. In addition, the communication security method and apparatus prevent information from being decrypted in a physical layer, by periodically or aperiodically exchanging a new encryption key.

Communication security method and apparatus of first node and second node communicating based on full duplex communication scheme using near field

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Yongin-si, South Korea

Jong Bu Lim