Yonsei University

Samsung Electronics Co., Ltd.

Lg Electronics Inc.

Daesik Hong

Wonsuk Chung

Kwonjong Lee

Hakkeon Lee

Insik Jung

Hyojin Lee

Dongkyu Kim

Chanhong Kim

Junho Jo

Sang-Wook Suh

Beomju Kim

Gosan Noh

Sung-Mook Lim

Haesoon Lee

Kijun Kim

Jaehoon Chung

Jinmin Kim

Bonghoe Kim

Younsun Kim

Eunsun Kim

Hyoungju Ji

Jihyun Lee

Kwangseok Noh

Young Soo Kim

Dong-seek Park

Young Jun Hong

Jonghyun Bang

Chang Soon Park

Yeohun Yun

Hak-Ju Lee

Hyunsoo Kim

Soohyun Kim

Seunghyun Lee

Seungil Park

Sooyong Choi

Sungtae Kim

Sung-Kwon Hong

Hyungju Nam

SeokWon Lee

Myeon-Gyun Cho

Seongbae Han

Hyung-Jong Kim

Moonchang Choi

Jaeyeong Choi

Seunglae Kam

Hanho Wang

Jihaeng Heo

Hyungsik Ju

Joohyun Son

Sung Woo Weon

The present disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate than a 4G system such as LTE. A method in which a base station transmits a signal by using a time offset in a time-asynchronous non-orthogonal multiple access (TA-NOMA) system, according to an embodiment of the present disclosure, comprises the steps of: checking a first bit stream for a first terminal, and a second bit stream for a second terminal; determining a time offset for the second terminal on the basis of the number of terminals operating in the TA-NOMA system and a pulse shape used in the TA-NOMA system; and transmitting a first signal corresponding to the first bit stream and a second signal corresponding to the second bit stream on resources that are allocated based on the time offset.

Method and device for transmitting and receiving signal by using time offset in time-asynchronous non-orthogonal multiple access system

The disclosure relates to post-4generation (4G) communication systems, such as 5generation (5G) or 6generation (6G), which support a higher data rate than the long term evolution (LTE) or 4G communication systems. A method and an apparatus for transmitting and receiving signals in a frequency-asynchronous non-orthogonal multiple access (FA-NOMA) communication system are provided. The method for transmitting a signal by a base station in an FA-NOMA system includes determining a frequency offset to be applied to a first signal transmitted to a first user equipment (UE) based on a second signal transmitted to a second UE, determining information for interference caused by the frequency offset, determining at least one pre-processing factor for the first UE based on the information for the interference, and transmitting a third signal including at least one first pilot to the first UE using the at least one pre-processing factor. The second signal includes at least one second pilot.

Method and apparatus for transmitting and receiving signal in frequency-asynchronous non-orthogonal multiple access system

The present disclosure relates to a communication method and system for converging a 5th-generation (5G) communication system or a 6th-generation (6G) communication system for supporting higher data rates beyond a 4th-generation (4G) system. The disclosure relates to an operating method of a terminal in a wireless communication system. The method may include: receiving configuration information about a plurality of signatures for non-orthogonal multiple access (NOMA) from a base station, the plurality of signatures including first signatures and second signatures; identifying a first signature sequence for the terminal, based on the configuration information; and transmitting data, configured based on the identified first signature sequence, to the base station, wherein the first signature sequence may be configured by repeating the first signatures, and the first signatures may be respectively applied to consecutive symbols of the data.

Apparatus and method for transmitting and receiving asynchronous signal in wireless communication system

A method by which a first network node cancels a self-interference signal when operating in a full duplex radio (FDR) mode in a wireless network can comprise the steps of: cancelling a self-interference signal on the basis of frequency synchronization estimation of the self-interference signal when frequencies of a reception signal received from a second network node and the self-interference signal are asynchronous; and estimating frequency synchronization of the reception signal by using a residual signal according to the cancellation of the self-interference signal, and detecting the reception signal on the basis of the frequency synchronization estimation of the reception signal.

Method for cancelling self-interference signal when operating in FDR mode, and device therefor

The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). An operation method for a receiving end in a wireless communication system includes receiving signals from a plurality of transmitting ends; determining filters for each of the plurality of transmitting ends; and filtering the signals using each of the filters.

Method and apparatus for multi-user reception in wireless communication system

The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). The present invention discloses a transmitting and receiving method capable of estimating an accurate time and a frequency synchronization using a sequence in a filter bank multiple transmission system.

Method and apparatus for performing sequence synchronization in mobile communication system

The present disclosure relates to a communication technique for converging a 5G communication system for supporting a higher data rate beyond a 4G system with an IoT technology, and a system therefor. The present disclosure can be applied to intelligent services (for example, smart home, smart building, smart city, smart car or connected car, healthcare, digital education, retail, security and safety-related service, and the like) on the basis of a 5G communication technology and an IoT-related technology. The present invention relates to a method for transmitting and receiving data, and a method for receiving data by a terminal according to the present invention comprises: receiving, from a base station, a random sequence generation parameter for generating a random sequence including a random variable in a first band; generating the random sequence using the received parameter; and performing decoding on the basis of the random variable included in the random sequence in a second band.

Method and apparatus for transmitting and receiving data between terminal and base station in mobile communication system

Disclosed is a method for setting a resource for Full Duplex Radio (FDR) Communication by a node in an FDR communication environment. According to the method, resources for the FDR communication can be selected in consideration of channel information of the nodes performing the FDR communication to obtain an improved achievable sum rate compared to Half Duplex Radio (HDR) communication schemes and to acquire diversity effects.

Method for setting resource for FDR communication by node in FDR communication environment

The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). A packet transmission method and apparatus for use in a wireless communication system and, in particular, for transmitting packets in a filter bank-based multicarrier wireless communication system. The packet transmission method for use in a wireless communication system based on Filter Bank-based Multi-Carrier (FBMC) includes generating an Offset Quadrature Amplitude Modulation (OQAM) symbol by extracting a transmission data period from data blocks obtained by repeating a transmission data as many times as an overlapping factor, performing Inverse Fast Fourier Transform (IFFT) on the OQAM symbol, shifting, when the overlapping factor is an even number, the IFFT-ed symbol cyclically, filtering the cyclically shifted symbol with a shortened compensation filter, and transmitting the filtered symbol in an overlapped OQAM signal.

Packet transmission method and apparatus for use in filter bank-based multi-carrier wireless communication

An apparatus and method for performing uplink scheduling in a Multiple-Input Multiple-Output (MIMO) system are provided. The method includes selecting User Equipments (UEs) as members of at least one user set for simultaneous transmission from among UEs from which channel information is received, using the channel information, and generating a power control value for each of the at least one user set and transmitting the power control value to UEs of the user set. The at least one user set includes a second user set including UEs selected according to interference that the UEs cause to a first user set from among remaining UEs unselected for the first user set, the first user set including UEs selected in a descending order of reception power from among the UEs from which the channel information is received.

Method and apparatus for performing uplink scheduling in a multiple-input multiple-output system

A frequency-efficient antenna operation method is provided in a multiuser beamforming system. The method includes determining channel correlations and channel gain differences between channels using channel information received from multiple terminals, classifying the multiple terminals into at least one or more clusters using the channel correlations and channel gain differences, selecting a beamforming vector for each of the one or more clusters using the channel information of at least one or more terminals in the one or more clusters, allocating power to the terminals in each of the one or more clusters, and forming a beam based on the allocated power and the selected beamforming vector. According to the method, interference due to sharing space resources may be reduced and more efficient data communication may be achieved.

Method and apparatus for operating a non-orthogonal multiple access scheme in multiuser beamforming system

One embodiment disclosed in the present description relates to a coexistence manager which can adaptively select channels in a coexistence environment between disparate systems with channel use constraints that inherently exist with use of TVWS. Accordingly, the embodiment disclosed in the present description provides a resource allocation method for a manager device, comprising the steps of: receiving a channel allocation request from a first network or device; determining a second network or device for switching channels based on the benefits of each channel or device, if a channel cannot be assigned to the first network or device; switching the channel used by the second network or device to another channel and raising its priority; and assigning the channel used by the second network or device to the first network or device.

Resource allocation in a coexistence system

An embodiment of the present invention relates to a method for performing spectrum sensing to detect a signal for a terminal of a primary user in each sensing node. The method for performing sensing may comprise the steps of: performing, by the sensing node, spectrum sensing to detect a signal for a terminal of a primary user; computing, by the sensing node, a local test statistic on the basis of the result of the spectrum sensing; calculating, by the sensing node, the transmission probability on the basis of the computed local test statistic; and transmitting, by the sensing node, sensing information to a convergence center on the basis of the calculated transmission probability. In this case, the convergence center can determine whether the signal for a primary user exists on the basis of the transmitted sensing information.

Method for controlling random access for the efficient sensing of the cooperative spectrum in a cognitive radio-based frequency resource sharing system

In order to simultaneously perform frequency resource sensing and data transmission, a pico base station (BS) within the coverage of a macro BS may determine the number of antennas for frequency band sensing and/or the number of antennas for data transmission and reception from among a plurality of antennas of the pico BS. The pico BS may also determine the duration of the frequency band sensing in a radio frame. The pico BS could then perform frequency band sensing, for the determined duration, or data transmission and reception according to the determined number of antennas for frequency band sensing and/or the determined number of antennas for data transmission. The duration of frequency band sensing and the number of antennas for frequency band sensing and data transmission may be determined based on the data throughput of the pico BS.

Method and apparatus for simultaneously performing frequency resource sensing and data transmission in a wireless communication system

Provided are a first hub corresponding to a first WBAN and a second hub corresponding to a second WBAN which may communicate with each other through a temporal connection. The temporal connection may decrease the usage of additional data, complexity, and power consumption that typically occurs due to mutual communication between different WBANs.

First hub and second hub communicating by temporal connection between different wireless body area networks (WBANs) and communication method thereof

Growing community of inventors

Seoul, South Korea

Daesik Hong