Electronics and Telecommunications Research Institute

Woo Ram Shin

Young Jo Ko

Seung Kwon Baek

Chan Ho Yoon

Gi Yoon Park

Seok Ki Kim

Ok Sun Park

Sung Hyun Moon

Cheul Soon Kim

Tae Joong Kim

Kap Seok Chang

Jae Sheung Shin

Young Ha Lee

Kyeong Pyo Kim

An operation method of a terminal may comprise receiving, from a base station, information of target transmission points targeted for a report of first channel state information (CSI) among the plurality of transmission points; receiving a first CSI-reference signal (CSI-RS) from the target transmission points; transmitting the first CSI determined based on the first CSI-RS to the base station; receiving, from the base station, information on a first transmission point determined based on the first CSI; receiving, from the first transmission point indicated by the information on the first transmission point, a second CSI-RS; receiving, from the base station, information on a requirement; and transmitting, to the base station, a second CSI including a transmission parameter for achieving the requirement.

Method and apparatus for ultra reliable and low latency communication

An operation method of a transmitter in a communication system may comprise: configuring a first reference signal region for transmission of a first reference signal in the delay-Doppler domain; arranging the first reference signal having a sequence form in a specific region within the first reference signal region; transforming a delay-Doppler domain signal including the first reference signal into a time domain signal; and transmitting the time domain signal to a receiver.

Method and apparatus for channel estimation in communication system

A method for transmitting and receiving signals for ultra reliable low latency communication. A method of operating a terminal includes: receiving, from a base station, first DCI including resource allocation information of a first PDSCH; performing a blind decoding operation on a PDCCH candidate when a resource region of the first PDSCH indicated by the first DCI overlaps with a resource region of the PDCCH candidate; and performing a receiving operation of a downlink channel on the basis of a result of the blind decoding operation. Therefore, the performance of a communication system can be improved.

Method for transmitting and receiving signals for ultra reliable low latency communication

An operation method of a first communication node in a communication system includes receiving a signal from a second communication node; demodulating the signal to obtain LLR values; calculating a first codeword based on the LLR values; selecting error patterns from among all error patterns based on Hamming weights; generating second codewords by applying the first codeword to each of the selected error patterns; and determining a codeword having a highest similarity to the first codeword among the second codewords as an optimal codeword.

Method and apparatus for decoding using soft decision

A method and apparatus for transmitting and receiving signal in communication system. A method of a base station includes: configuring frequency spreading sequences each of which corresponds to a transmission starting time point; configuring time spreading sequences each of which corresponds to a terminal; and transmitting information on the frequency spreading sequences and the time spreading sequences to a plurality of terminals, wherein one of the frequency spreading sequences and one of the time spreading sequences are assigned to each of the plurality of terminals.

Method and apparatus for transmitting and receiving signal in communication system

An operation method of a first terminal in a communication system may comprise receiving, from a base station, a control message including information on a resource allocated for a transmission indicator used for identifying the first terminal among a plurality of terminals performing uplink transmission; transmitting the transmission indicator to the base station using the resource allocated for the transmission indicator; and after transmitting the transmission indicator, transmitting an uplink signal to the base station using a preconfigured resource without an uplink grant.

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Daejeon, South Korea

Woo Ram Shin