Electronics and Telecommunications Research Institute

Samsung Electronics Co., Ltd.

Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V.

Yonsei University

University-industry Cooperation Group of Kyung Hee University

Wooram Shin

Kwang Jae Lim

Young Jo Ko

Sung-Hyun Moon

Dong Seung Kwon

Anseok Lee

Eunkyung Kim

Cheulsoon Kim

Jihyung Kim

DongSeung Kwon

Choongil Yeh

Chanho Yoon

Young-Jo Ko

Ji Hyung Kim

Byung-Jae Kwak

Keun Young Kim

Seung-Kwon Baek

Gi Yoon Park

Young Seog Song

Hyun-jae Kim

Junyoung Nam

Jin-Woo Kim

Jae Sun Cha

Chung Gu Kang

Thomas Haustein

Lars Thiele

Kapseok Chang

Kyeongpyo Kim

Changhee Lee

Seung Joon Lee

Johannes Dommel

Een Kee Hong

Dong Hyun Ahn

Sameh Eldessoki

SeungKwon Baek

Bum-Soo Park

Jung-Hyun Kim

Choong Il Yeh

Ae-Soon Park

Hyun Jae Kim

Yong Su Lee

Ji Hung Kim

Jeong Hwan Lee

Sung-Min Oh

Hong-Yeop Song

Min Sik Seo

Mi-Young Nam

Ju Hyup Kim

Saeed Afrasiabi Gorgani

Rong Ran

An operation method of a base station in a communication system may include: performing an operation for channel measurement between the base station and a terminal; determining a size of multiple spreading resource blocks configured in a second two-dimensional (2D) domain based on a result of the channel measurement; transmitting information indicating the size of the multiple spreading resource blocks to the terminal; and performing a communication procedure with the terminal based on the multiple spreading resource blocks having the size.

Method and apparatus for modulation and demodulation of signal in communication system

A wireless communication system includes a first transmitter and a second transmitter. For a transmission or reception of data of a first user equipment and data of a second user equipment on resources shared by the first user equipment and the second user equipment, the first transmitter is configured for a superimposed non-orthogonal multiple access, NOMA, transmission or reception of a first data signal of the first user equipment and a second data signal of the second user equipment, and the second transmitter is configured for a superimposed non-orthogonal multiple access, NOMA, transmission or reception of a third data signal of the first user equipment and a fourth data signal of the second user equipment.

Joint transmissions of data in a wireless communication system using a non-orthogonal multiple access transmission scheme

An apparatus serves a plurality of user equipments in a wireless communication system. For transmitting/receiving data of a plurality of user equipments, which include at least a first user equipment and a second user equipment, on resources shared by the plurality of user equipments, the apparatus transmits/receives a first data signal of the first user equipment and second data signal of the second user equipment using a non-orthogonal multiple access, NOMA, scheme. The first data signal and the second data signal are modulated using different waveforms prior to superposition of the first and second data signals.

Communicating data of a first user equipment and data of a second user equipment on shared resources of a wireless communication system

An operation method of a first communication node may include: mapping data symbols to be transmitted to a second communication node of the communication system to resources in a first two-dimensional (2D) domain; pre-processing the data symbols mapped to the resources in the first 2D domain to spread the data symbols on resources in a second 2D domain; mapping the pre-processed data symbols to the resources in the second 2D domain; and performing multi-carrier modulation on the data symbols mapped to the resources in the second 2D domain for each of the resources in the second 2D domain.

Method and apparatus for signal modulation and demodulation in wireless communication system

A method and an apparatus for allocating uplink resources includes transmitting an uplink grant (UL Grant) for an unlicensed component carrier (UCC) to a plurality of terminals, wherein the UL Grant for a first terminal among the plurality of terminals includes a resource allocation information in which a transmission timing of the uplink data of a second terminal among the plurality of terminals is considered.

Method and apparatus for allocating uplink resources

An apparatus for receiving a signal through an unlicensed band includes: a processor, a memory, and a radio frequency unit, wherein the processor executes a program stored in the memory to perform: receiving a secondary synchronization signal (SSS) in at least one remaining subframe except a subframe 0 or a subframe 5 of a plurality of subframes included in a discovery signal measurement timing configuration (DMTC), and detecting the SSS by using a subframe number of the subframe 0 or the subframe 5.

Apparatus for transmitting and receiving data through unlicensed band

An apparatus for receiving a signal through an unlicensed band includes: a processor, a memory, and a radio frequency unit, wherein the processor executes a program stored in the memory to perform: receiving a secondary synchronization signal (SSS) in at least one remaining subframe except a subframeor a subframeof a plurality of subframes included in a discovery signal measurement timing configuration (DMTC), and detecting the SSS by using a subframe number of the subframeor the subframe

A method in which a base station transmits a CSI (channel state information)-RS (reference signal) in a MIMO (multiple input multiple output) antenna system is provided. The base station periodically transmits a CSI-RS for first CSI to a terminal. The base station requests the terminal to transmit second CSI in a first subframe. When a CSI-RS occasion is configured, the base station transmits a CSI-RS for the second CSI to the terminal for a duration of the CSI-RS occasion from a second subframe or to the second subframe, which is a subframe after a first offset configured for CSI-RS transmission from the first subframe.

Method and apparatus for transmitting reference signal, method and apparatus for measuring and reporting channel state information, and method for configuring the same

Provided are a method for generating a CSI report and a terminal thereof. The method for generating a CSI report includes: receiving a CSI-RS from a serving cell of a base station through at least one CSI-RS resource included in a CSI-RS occasion; and generating the CSI report based on the CSI-RS received through the at least one CSI-RS resource.

Method and apparatus for generating CSI report

Disclosed herein is a terminal including: receiving a CSI-RS from a base station, generating CSI feedback information including indicators such as RI, PTI, and BI and a first PMI and a second PMI that are elements of a double codebook, on the basis of the CSI-RS and transmits the CSI feedback information to the base station through an uplink subframe corresponding to predetermined feedback periodicity.

Terminal for periodically transmitting CSI feedback information

A method for receiving a reference signal including receiving a configuration about a subband from the base station through a higher layer signaling, wherein the RS is allocated to the subband; and receiving a subframe including a reference signal resource allocated by a unit of the subband, and an apparatus are provided.

Method and apparatus for receiving reference signal

A method for a base station to configure a channel state information (CSI)-reference signal (RS) is provided. The base station configures a CSI-RS antenna port for a terminal. The base station selects one of at least one port number mapping rule for mapping a port number on the CSI-RS antenna port for the terminal. The base station notifies the terminal of the selected port number mapping rule.

Method and apparatus for transmitting downlink reference signal and method and apparatus for transmitting control information in cooperative multi-point communication system

A method for synchronization by a D2D terminal in a D2D communication network through receiving a first D2D synchronization signal from at least one D2D synchronization source and performing synchronization according to a synchronization timing reference provided through the first D2D synchronization signal, and a method for negotiating whether to perform a role as a synchronization source with another D2D synchronization source through determining, when a D2D synchronization signal and a D2D synchronization channel are received from at least one D2D synchronization source, whether to maintain a role as the independent synchronization source based on negotiation information for negotiation between synchronization sources included in the D2D synchronization channel, and operating as a relaying synchronization source when the role as the independent synchronization source is not maintained, are provided.

Method and apparatus for synchronization in D2D communication network

A first terminal receives a first Timing Advance (TA) value from a base station and includes a second TA value that is obtained based on the first TA value in a Scheduling Assignment (SA) signal. The first terminal transmits the SA signal to a second terminal at downlink (DL) timing for receiving a downlink signal of the base station in cellular communication. When a length of a Cyclic Prefix (CP) that is set for the D2D communication and a length of a CP that is set for the cellular communication are different, the first terminal transmits data of the D2D communication to the second terminal at first timing that is obtained by applying the second TA value to the DL timing.

Method and apparatus for device to device communication

Growing community of inventors

Daejeon, South Korea

Wooram Shin