Samsung Electronics Co., Ltd.

Purdue Research Foundation

Seoul National University

Keonkook Lee

Taeyoung Kim

Jiyun Seol

Suryong Jeong

Chanhong Kim

Jaeseung Son

Hyunil Yoo

Jihwan Noh

Eko Nugroho Onggosanusi

Young-Han Nam

Md Saifur Rahman

Yeohun Yun

Sungnam Hong

Jeehwan Noh

Min Sagong

David James Love

Kyeongyeon Kim

Byungju Lee

Young Han Nam

Byonghyo Shim

Byunghwan Lee

Ming Hoka

Jun-Il Choi

Lua Ngo

Jjiyun Seol

Younghan Nam

For converging a 5-Generation (5G) communication system and supporting higher data rates beyond a 4-Generation (4G) system with a technology for Internet of Things (IoT), a channel state information (CSI) acquisition method includes transmitting CSI configuration information to a terminal, selecting a beam for transmitting a beamformed CSI reference signal (BF-CSI-RS) to the terminal, transmitting the BF-CSI-RS to the terminal using the selected beam, and notifying the terminal of a beamforming update. A base station for acquiring CSI in a mobile communication system includes a transceiver configured to transmit and receive signals, and a controller configured to control the transceiver to transmit CSI configuration information to a terminal, to select a beam for transmitting a BF-CSI-RS to the terminal, to transmit the BF-CSI-RS to the terminal using the selected beam, and to notify the terminal of a beamforming update.

Reference signal measurement method and apparatus for use in mobile communication system

The present disclosure relates to a pre-5-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4-Generation (4G) communication system such as Long Term Evolution (LTE). The present disclosure relates to transmission of a reference signal in a wireless communication system, and an operation method of a terminal comprises the steps of: receiving control information for reference signals from a base station, and receiving the reference signals according to the control information. Further, embodiments of the present disclosure also differ from the embodiment described above.

Apparatus and method for transmitting reference signals in wireless communication system

The present disclosure relates to a 5G or pre-5G communication system for supporting a data rate higher than that of the 4G system. A method by a terminal in a wireless communication system according to the present disclosure includes receiving a first message comprising first information indicating a number of symbols in an uplink pilot time slot (UpPTS) region, identifying at least one symbol for transmitting a sounding reference signal (SRS) based on the first information, and transmitting the SRS.

Method and apparatus for communication in wireless communication system

The present disclosure relates to a pre-5-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4-Generation (4G) communication system such as Long Term Evolution (LTE). The present invention relates to transmission of a reference signal in a wireless communication system, and an operation method of a terminal comprises the steps of: receiving control information for reference signals from a base station, and receiving the reference signals according to the control information. Further, the present invention also comprises embodiments different from the embodiment described above.

Disclosed is a 5G or pre-5G communication system to be provided for supporting a data transmission rate higher than that of a 4G communication system such as LTE. According to one embodiment of the present invention, a method by which a base station of a wireless communication system using a two-dimensional X-Pol antenna requests feedback information, can comprise the steps of: generating control information for commanding the generation of the feedback information and channel state information (CSI) process information on vertical axes and horizontal axes of a specific planar antenna and respective planar antennas of the two-dimensional X-Pol antenna; transmitting the generated control information to a terminal in the base station; generating and transmitting a reference signal corresponding to the CSI process; and receiving, from at least one terminal, feedback information in correspondence to the number of CSI processes.

Method and device for providing feedback signal in wireless communication system using two-dimensional antenna

The present disclosure relates to a pre-5-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4-Generation (4G) communication system such as Long Term Evolution (LTE). The present invention relates to transmission of a reference signal in a wireless communication system, and an operation method of a terminal comprises the steps of: receiving control information for reference signals from a base station; and receiving the reference signals according to the control information. Further, the present invention also comprises embodiments different from the embodiment described above.

The present disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. A method and apparatus for transmitting/receiving Channel State Information (CSI) is provided for use in a Full Dimensional Multiple Input Multiple Output (FD-MIMO) system. A channel state information (CSI) reception for a base station according to the present disclosure for use in a wireless communication system includes transmitting CSI process configuration information to a terminal, transmitting a CSI Reference Signal (CSI-RS) to the terminal based on the CSI process configuration information, and receiving the CSI generated based on CSI-RS measurement result from the terminal, wherein the CSI process configuration information is configured to measure channel states of horizontal and vertical antenna arrays, the CSI includes a joint Channel Quality Indicator (CQI), and the joint CQI is determined based on the CQIs for the horizontal and vertical antennas arrays.

Method and apparatus for communicating channel state information in full-dimensional MIMO system

The disclosure relates to a pre-5-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4-Generation (4G) communication system such as Long Term Evolution (LTE). A feedback transmission method for a receiving device in a multiple input multiple output system according to one embodiment comprises: a step of measuring channel state information; a first quantization step of quantizing the channel state information using a first codebook; a second quantization step of quantizing the channel state information using second and third codebooks which are different from the first codebook; and a step of feeding back the channel state information on the basis of a selection result of one of the first and second quantization steps.

Apparatus and method for feedback of channel state information in wireless communication system

An apparatus and method is proved that transmits and receives Reference Signals (RSs) in a wireless communication system using Multiple-Input and Multiple-Output (MIMO). A system adapted to the method is provided. The method includes: determining the number of RS transmission to two or more antennas, respectively, as the number of antennas included in respective ports, wherein each port include one or more antennas; creating transmit patterns so that they cyclically differ from each other every the number of RS transmission to transmit the created transmit patterns the number of RS transmission times; and mapping the RSs to one or more antennas according to the created, respective patterns, and transmitting the RSs in order.

Apparatus and method of transmitting and receiving reference signal in wireless communication system using multiple-input and multiple-output

A user equipment (UE) capable of communicating with a base station (BS) includes a transceiver configured to receive a signal comprising a CSI process configuration, wherein the CSI process configuration comprises a CSI-RS resource configuration to identify a CSI-RS resource and a CSI-RS on the CSI-RS resource, and transmit a precoding matrix indicator to the base station, and a controller configured to derive the precoding matrix indicator utilizing the CSI-RS on the CSI-RS resource. When the CSI-RS resource configuration indicates 4 CSI-RS ports: the precoding matrix indicator has a 3-bit size when a rank to derive the precoding matrix indicator is one; the precoding matrix indicator has a 3-bit size when the rank is two; the precoding matrix indicator has a 2-bit size when the rank is three; and the precoding matrix indicator has a 1-bit size when the rank is four.

Advanced beamforming and feedback methods for MIMO wireless communication systems

The present disclosure relates to a 5G or pre-5G communication system for supporting a higher data transfer rate than a 4G communication system such as LTE. The present invention relates to channel estimation and equalization in a cellular environment on the basis of an FBMC transmission and reception technique. A communication method of a base station according to one embodiment of the present invention may comprise the steps of: determining a reference signal (RS) pattern building block of a plurality of cells according to filter information of the plurality of cells; determining an RS pattern of the plurality of cells by using the determined RS pattern building block and the size of a resource block (RB); and transmitting, to a terminal, information about the determined RS pattern. According to one embodiment of the present invention, it is possible to provide a method and an apparatus for mapping a reference signal in a multi-cell environment.

Method and apparatus for designing reference signal pattern in multi-cell multi-carrier system

The present disclosure relates to a pre-5-generation (5G) or 5G communication system to be provided for supporting higher data rates beyond 4-generation (4G) communication system such as long term evolution (LTE). The present disclosure relates to channel information feedback in a wireless communication system, and an operation method of a receiving node includes: determining compressed channel information based on an eigenvalue decomposition of a covariance matrix regarding a channel, and transmitting, to a transmitting node, a direction index and a magnitude index representing the compressed channel information. Herein, a dimension of the compressed channel information is lower than a dimension of channel information associated with the transmitting node. Also, the disclosure includes other embodiments, different from the above described embodiment.

Apparatus and method for feeding back channel information in wireless communication system

The present invention relates to a transmit diversity method for FQAM and an apparatus therefor. According to the present invention, a transmit diversity method for FQAM and apparatus therefor are provided, the transmit diversity method comprising the steps of: modulating data into at least one FQAM symbol; interleaving a plurality of tones constituting the at least one FQAM symbol such that tones having the same index are located in adjacent resources; and transmitting the at least one interleaved FQAM symbol through at least one transceving unit.

Transmit diversity method for FQAM and apparatus thereof

A Virtual Antenna Mapping (VAM) method of a base station and a transmission apparatus equipped with M physical antennas and Q Transceiver Units (TXRUs) are provided. The method includes transmitting Reference Signals (RSs) arranged differently according to respective VAM patterns to a terminal in a transmission mode supporting N logical antennas; receiving a feedback including information regarding a VAM pattern selected as a result of channel measurement with respect to the RSs transmitted according to the VAM pattern from the terminal; and transmitting a signal to the terminal through the M physical antennas by applying the selected VAM pattern, wherein the selected VAM pattern maps N data streams corresponding to the N logical antennas to the M physical antennas through the Q TXRUs.

Growing community of inventors

Suwon-si, South Korea

Keonkook Lee