Samsung Electronics Co., Ltd.

Yonsei University

Hoon-Dong Noh

Young-Woo Kwak

Youn-Sun Kim

Cheol-Kyu Shin

Donghan Kim

Seung-Hoon Choi

Sang-Min Ro

Jin-Young Oh

Young-Bum Kim

Ju-Ho Lee

Hyoung-Ju Ji

Jeong-Ho Yeo

Youngrok Jang

Sooyong Choi

Hyo-Jin Lee

Tae-Han Bae

Chung-Yong Lee

Seongbae Han

Dongheon Lee

Cheol-kyu Shin

Jaehyuk Jang

Kyeong-In Jeong

Soeng-Hun Kim

Yong-Jun Kwak

Sunghwan Kim

Sang-Bum Kim

Song-Yean Cho

Joo-Hyun Lee

Hyun-Suk Lee

Jong-Hyeuk Lee

Sang-Soo Jeong

Jang-Won Lee

Dong-Han Kim

Kyungsik Min

Myoung-Seok Kim

Hee-Don Gha

Sang-Geun Lee

Seong-mok Lim

Seok-Jae Moon

The disclosure relates to a wireless communication system, in which a method performed by a user equipment includes receiving, from a base station, information configuring a plurality of sounding reference signal (SRS) resources that are related with one channel state information-reference signal (CSI-RS) resource, receiving an SRS resource indicator (SRI) indicating at least one SRS resource from among the plurality of SRS resources, obtaining, based on an implicit precoding being indicated for an uplink channel, precoding information for the uplink channel based on the CSI-RS resource related with a most recently transmitted SRS of the at least one SRS resource indicated by the SRI, and transmitting, to the base station, the uplink channel based on the precoding information.

Method and device for transmitting/receiving uplink reference signal or channel in wireless communication system

The disclosure relates to a wireless communication system, in which a method of transmitting an uplink reference signal or channel, according to an embodiment, includes receiving, from a base station, information about a direction of a beam to be used for transmission of the uplink reference signal or channel; performing beamforming on the uplink reference signal or channel based on the information about the direction of the beam; and transmitting the beamformed uplink reference signal or channel to the base station.

A method, provided by the present disclosure, of transmitting a reference signal by a base station in a wireless communication system using a plurality of antenna ports including mapping wireless resources, for transmitting a reference signal, to a plurality of antenna ports for transmitting the reference signal; and using the wireless resources and transmitting the reference signal to a terminal through the mapped antenna ports. The mapping to the antenna ports is executed on the basis of a combination of a first mapping pattern between the wireless resources and the antenna ports and a second mapping pattern between the wireless resources and the antenna ports.

Method and device for transmitting and receiving feedback signal in wireless communication system

Provided are a method and apparatus for supporting beam-based cooperative communication for smoothly providing a service in a wireless communication system. The method, performed by a terminal, of supporting beam-based cooperative communication includes: receiving, from a base station, configuration information for measuring quality of a beam; receiving first reference signals regarding desired channels respectively corresponding to a plurality of transmission beams received from the base station, and second reference signals regarding interference channels respectively corresponding to a plurality of transmission beams that interfere with the plurality of transmission beams received from the base station; and measuring quality of a beam regarding the plurality of transmission beams received from the base station, based on the configuration information, the first reference signals, and the second reference signals.

Method and device for supporting beam-based cooperative communication in wireless communication system

The present disclosure pertains to a method and an apparatus for generating a reference signal (RS) sequence and a data scrambling sequence. A method for a base station transmitting a reference signal according to an embodiment of the present disclosure may comprise the steps of: generating a reference signal sequence; and transmitting a reference signal corresponding to the generated reference signal sequence. The reference signal sequence can be generated using an initial sequence that is determined using a slot number in a transmission frame, a symbol number in a slot, and a scrambling identifier (ID).

Method and apparatus for generating reference signal sequence and for performing data scrambling in wireless communication system

The present disclosure relates to a 5G or pre-5G communication system for supporting a higher data transmission rate beyond a 4G communication system such as LTE. To this end, a base station using a large-scale antenna transmits, to a terminal, reference signal resource configuration information including multiple pieces of reference signal configuration information and reference signal port information, for transmission of a reference signal, and transmits the reference signal to the terminal using some or all of channel measurement resources indicated by the multiple pieces of reference signal configuration information and the reference signal port information included in the reference signal resource configuration information. In this case, the channel measurement resources may correspond to antenna ports, the number of which is indicated by a combination of the multiple pieces of reference signal configuration information and the reference signal port information.

Resource allocation device and method in large-scale antenna system

Provided are a method and apparatus for transmitting and receiving channel information in a wireless communication system. The method for transmitting and receiving channel information in a wireless communication system includes: receiving information about a channel information providing method from a base station; receiving, from the base station, a reference signal for measuring a channel status between the base station and the terminal; determining channel information for a plurality of services, based on the information about the channel information providing method and the reference signal; and transmitting, to the base station, the channel information for the plurality of services.

Method and apparatus for transmitting or receiving channel information in wireless communication system

A method and an apparatus for indicating the time of aperiodic channel status information (CSI) report in a wireless communication system are provided. The method for a user equipment (UE) configured to operate in a wireless communication system includes receiving configuration information about a resource of a reference signal from a base station, receiving, from the base station, feedback configuration information set based on the reference signal, receiving, via a downlink control information (DCI), a feedback transmission timing and an aperiodic CSI trigger transferred in the same slot as the reference signal, estimating an aperiodic channel status between the UE and the base station (BS) based on the reference signal, generating feedback information based on the estimated aperiodic channel status, and transmitting the feedback information to the base station based on the feedback transmission timing.

Method and apparatus for indicating aperiodic CSI reporting time in wireless communication system

A method for transmitting a channel state information reference signal (CSI-RS) by using multiple antenna ports and receiving CSI in a wireless communication system is provided. The method includes transmitting at least one CSI-RS configuration information for configuring a resource for transmission of the CSI-RS, transmitting the CSI-RS in a resource determined based on the CSI-RS configuration information, and receiving CSI corresponding to the transmitted CSI-RS, in which the CSI-RS configuration information includes information indicating a frequency comb type in which the CSI-RS is transmitted.

Scheme for configuring reference signal and communicating channel state information in a wireless communication system using multiple antenna ports

A method and a terminal for transmitting a feedback signal by a terminal in a wireless communication system are provided. The method includes receiving, from a base station, a feedback information configuration; receiving, from the base station, a reference signal; estimating a channel between the base station and the terminal based on the reference signal; configuring channel component information associated with separating each of a plurality of channel elements of the channel according to components of the plurality of channel elements; configuring grouping information associated with grouping the plurality of channel elements; and transmitting feedback information including the configured channel component information and the configured grouping information.

Method for configuring feedback information to feed explicit channel state information back in wireless communication system

A method, provided by the present disclosure, of transmitting a reference signal by means of a base station in a wireless communication system using a plurality of antenna ports comprises the steps of: mapping wireless resources, for transmitting a reference signal, to a plurality of antenna ports for transmitting the reference signal; and using the wireless resources and transmitting the reference signal to a terminal through the mapped antenna ports. The step of mapping to the antenna ports is characterized by being executed on the basis of a combination of a first mapping pattern between the wireless resources and the antenna ports and a second mapping pattern between the wireless resources and the antenna ports.

Disclosed are: a communication technique for merging, with the Internet of Things (IoT) technology, a 5th-generation (5G) communication system for supporting a data transmission rate higher than that of a 4th-generation (4G) system; and a system therefor. The disclosure can be applied to intelligent services (for example, smart home, smart building, smart city, smart car or connected car, health care, digital education, retailing, security and safety related services) on the basis of 5G communication technology and IoT related technology. One embodiment of the present invention enables a terminal to receive at least one reference signal from a base station in a mobile communication system, and to generate channel state information on the basis of the at least one reference signal so as to transmit the channel state information to the base station, wherein the at least one reference signal is received in a downlink pilot time slot (DwPTS) by using a resource determined on the basis of a special subframe configuration.

Method and device for transmitting and receiving channel state information in mobile communication system

Methods and apparatuses for adapting a bandwidth of a terminal in a wireless communication system are provided. The method includes transmitting, to a base station (BS), information about bandwidth adaptation capability of the terminal, receiving, from the BS, a bandwidth adaptation command for requesting adaptation to a bandwidth corresponding to the bandwidth adaptation capability of the terminal, and adapting the bandwidth of the terminal in at least one symbol location in a unit time period of a subframe, based on the received bandwidth adaptation command.

Method and apparatus for adapting bandwidth of terminal in wireless communication system

The present disclosure relates to a 5G or pre-5G communication system for supporting a data transmission rate higher than a 4G communication system such as LTE. A method proposed in an embodiment of the present disclosure is a method for measuring a channel in a mobile communication system, comprising the: receiving, from a base station, configuration information for measuring a channel by using a reference signal; receiving the reference signal from the base station; measuring the channel by using the reference signal on the basis of the configuration information; and transmitting information on the measured channel to the base station, wherein the configuration information comprises at least one from among information related to time for measuring the channel and information related to a number of ports with respect to the reference signal.

Growing community of inventors

Gyeonggi-do, South Korea

Hoon-Dong Noh