Electronics and Telecommunications Research Institute

Samsung Electronics Co., Ltd.

Korea Advanced Institute of Science and Technology

Georgia Tech Research Corporation

Yonsei University

Byung-Jae Kwak

Dong Seung Kwon

Hyun-Woo Lee

Young Seog Song

Sung-Ho Choi

Kapseok Chang

Sung-Oh Hwang

Ji Hyung Kim

Kook-Heui Lee

Sung-Jin Kim

Bum-Soo Park

Seung Joon Lee

Choong Il Yeh

Young-Hoon Kim

Wooram Shin

Yong-Suk Lee

DongSeung Kwon

June-Koo Rhee

Junhyuk Kim

Ju-Ho Lee

Jin-Woo Kim

Chung Gu Kang

Choongil Yeh

Nah-Oak Song

Jae-Yoel Kim

Yong-Jun Kwak

Ho-Kyu Choi

Seung-Chan Bang

Seung Chan Bang

Jae-Young Kim

Jong-Hyeuk Lee

Dong-Seung Kwon

Seong-Ill Park

Sang-Hwan Park

Seon-Ae Kim

Soo Chang Kim

Kyounghye Kim

Young-Suk Lee

Jung-Je Son

Do-Young Kim

Hyun Kyu Chung

Hyun-Kyu Chung

Hyeon-Woo Lee

Jung-Hyun Kim

Steven W McLaughlin

Beong-Jo Kim

Jee Hwan Ahn

Seong-Hun Kim

In-Kyeong Choi

Joon Ho Cho

Moon-Sik Lee

Ji Won Kang

Chung Yong Lee

Jihyung Kim

Jae-Ho Lee

Jung-yeol Oh

Joonhyuk Kang

Se-Jin Kim

Heon-Kook Kwon

Min-Koo Kim

Demijan Klinc

Jeongseok Ha

Sung-Cheol Chang

Ji Hung Kim

Myung-Don Kim

Een-Kee Hong

Hong-Yeop Song

Kook-Heul Lee

Min Sik Seo

Jae-Joon Park

Pyeong-Jung Song

Sangseok Yun

Sanghun Im

Young Yun Kang

Yang-Hee Suh

Jae-Yoal Kim

Joon Doo Kim

Eunhye Park

Min-Seok Jang

Mi-Young Nam

Dong-Hyun Ahn

A coexistence communication method for broadband power line communication that allocates a resource of another heterogeneous system to a blank resource in data where a plurality of heterogeneous systems are allocated to time division multiplex units (TDMUs) in a distribution scheme and a system therefor are provided. The method includes detecting a blank resource according to a heterogeneous system which does not share a power line among a plurality of heterogeneous systems, from data in which the plurality of heterogeneous systems which share the power line to perform power line communication are allocated to a plurality of TDMUs and in which each TDMU is allocated to a plurality of time division multiplex slots (TDMSs) sorted over time in a distribution scheme and allocating added another heterogeneous system to the blank resource.

Coexistence communication method for low-power broadband communication and system thereof

A first terminal generates a first scheduling request signal including information about first data resources for data transmission when the first terminal tries to reserve the first data resources. The first terminal generates a first scheduling request indication signal providing notification that the first scheduling request signal is to be transmitted. The first terminal transmits the first scheduling request indication signal through a first request subslot included in a first scheduling request resource before transmitting the first scheduling request signal. The first terminal transmits the first scheduling request signal through a second request subslot included in the first scheduling request resource.

Device to device (D2D) communication method and apparatus

A method and apparatus for generating a secret key includes: acquiring a random sequence by use of reciprocity of a radio channel; generating the secret key based on the random sequence; and stopping generating the secret key when it is determined that the radio channel is flat based on flatness measured from the radio channel.

Method and apparatus for generating secret key in wireless communication network

A method of synchronization in a distributed wireless communication system and a terminal supporting the same are disclosed. A terminal increases its contention window value if it receives a synchronization signal within a synchronization slot. The terminal decreases its contention window value if it receives no synchronization signal within the synchronization slot. The terminal determines whether to transmit a synchronization signal or not by using the increased or decreased contention window value.

Method and terminal for synchronizing in distributed wireless communication

When a transmitter transmits a first Timing Offset Indication iDentifier (TOID) of a plurality of TOIDs representing timing offset of a frame, the transmitter determines a first codeword corresponding to the first TOID of a plurality of codewords representing a subcarrier. The transmitter allocates a busy tone to a first subcarrier that the first codeword represents. The transmitter transmits the busy tone.

Method and apparatus for transmitting and receiving information in wireless distributed system

Provided are a random access method and a terminal supporting the random access method. The terminal may monitor a state of a channel, when the state of the channel is idle, attempt a packet transmission at a first packet transmission probability, and transmit a packet including the first packet transmission probability.

Random access method and terminal supporting the same

Disclosed herein are a method of performing synchronization in a distributed wireless communication system, and a terminal supporting the same. A distributed wireless communication system includes a plurality of networks. Time resources of each of a plurality of networks are divided into a synchronization slot, a discovery slot, a peering slot, and a data slot. A first terminal belonging to a first network determines whether a synchronization signal is received from a terminal belonging to a second network in the data slot of the first network. The first terminal detects whether it has met the second network that is out of synchronization with the first network if the synchronization signal is determined to have been received.

Method of performing synchronization in distributed wireless communication system and terminal supporting the same

A method for a communication link establishing device to establish a communication link in a targeted communication system is provided. A source terminal transmits a source terminal's identification information and threshold value information for selecting a relative angle measurement target to neighboring terminals including a target terminal, and transmits a relative angle measurement request signal to the target terminal and the neighboring terminals. Upon receipt of a response signal for the relative angle measurement request signal from at least one of the neighboring terminals including the target terminal, a communication link with the selected communication target's terminal is established based on the information contained in the response signal.

Apparatus and method for establishing communication link

Disclosed is a synchronization method in a distributed wireless communication system and a terminal supporting the same. In a synchronization method, a terminal splits a synchronization period into a plurality of backoff slots and randomly selects a backoff counter using the contention window. Furthermore, the terminal checks whether a channel is idle during at least one of the plurality of backoff slots and changes the backoff counter based on a result of the check.

Synchronization method in distributed wireless communication system and terminal supporting the same

An apparatus for spatial filtering receives a signal transmitted from a first terminal and detects a synchronization start point in time from a transmission frame included in the signal. The apparatus for spatial filtering demodulates a user-defined sequence included in the transmission frame and the at least one SRJBF sequence when the synchronization start point in time is detected, and then estimates a relative angle based on the demodulated user-defined sequence and SRJBF sequence.

Apparatus and method for spatial filtering by estimating angle of deviation for line of sight of user

A method and apparatus for generating a signal in a wireless communication system by allocating a sequence to a plurality of subcarriers for sending the signal and generating the signal based on the sequence and a phase rotation sequence are provided.

Method and apparatus for generating signal in wireless communication system

A random jitter beamforming method for reducing the influence of a side lobe to decrease a beam width, and a transmitter and a receiver using the same are provided. The random jitter beamforming method includes dividing a series of binary sequences to generate a plurality of bit groups, designating a beam pattern, corresponding to each of the bit groups, from a set of two or more beam patterns having the same gain and phase in a target direction, and forming a beam with the corresponding beam pattern, for each of the bit groups.

Random jitter beamforming method and transmitter and receiver using the same

A method and apparatus for a mobile communication terminal to recognize a target mobile communication terminal using a location recognition system. The method includes acquiring own location information of the mobile communication terminal; creating identification verification information using the location information, the identification verification information containing an identification formula for identifying the target mobile communication terminal as a target of communication; transmitting the created identification verification information to at least one other mobile communication terminal within a communication coverage area; receiving an identification response packet from the at least one other mobile communication terminal which has received the identification verification information, the identification response packet indicating whether the other mobile communication terminal is a target mobile communication terminal; and determining the target mobile communication terminal based on the received identification response packet.

Apparatus and method for recognizing target mobile communication terminal

Provided are a gravity search adaptive apparatus and method. The gravity search adaptive apparatus includes: a system configured to process and output a received signal; a system modeling unit configured to receive the same signal as a signal input to the system, to convert the signal using a system modeling parameter, and to output the converted signal; and an adaptive controller configured to use a gravity search adaptive algorithm to detect the system modeling parameter so that an error signal which is a difference between an output signal of the system and an output signal of the system modeling unit converges on a minimum value when the system modeling parameter is applied to the system modeling unit.

Method and apparatus for adaptive gravity search

A terminal and method for recognizing a communication target within a visible range. The method of a terminal to recognize a communication target includes obtaining location information of a communication target whose identification information is unknown within a visible range of a terminal user; and recognizing a relative location of the communication target with respect to the terminal based on the obtained location information and displaying the recognized relative location of the communication target.

Terminal and method for recognizing communication target

Growing community of inventors

Seoul, South Korea

Byung-Jae Kwak