Samsung Electronics Co., Ltd.

Lg Electronics Inc.

Yonsei University

Sungyoon Cho

Joohyun Do

Haechul Lee

Dahae Chong

Myungjoon Shim

Dongku Kim

Hanbyul Seo

Jungwon Lee

Byounghoon Kim

Junho Lee

Sungsoo Kim

Dongwoon Bai

Kaibin Huang

Yoo Jin Choi

Joontae Kim

Bora Lim

Heunchul Lee

Hyunsoo Ko

Hyukjin Chae

Jaehoon Chung

Jinmin Kim

Hyunsu Cha

Seongwook Song

Jonghan Lim

Seungjoong Hwang

Jinyoung Jang

Soonsuk Roh

A wireless communication apparatus includes a radio frequency integrated circuit (RFIC) configured to receive an input signal to generate a digital sample signal from the input signal, a data compressor configured to compress the digital sample signal according to a compression manner based on a data probability distribution of the input signal varying based on a receivable signal amplitude range of the RFIC, a data decompressor configured to decompress the compressed digital sample signal on the basis of a decompression manner corresponding to the compression manner to generate a decompressed digital sample signal, a data transfer link configured to transfer the compressed digital sample signal to the data decompressor, and a processor configured to process the decompressed digital sample signal.

Wireless communication apparatus including data compressor and operating method of the wireless communication apparatus

An operating method of a terminal configured to communicate with at least one of a plurality of cells includes generating first cell search training data for the plurality of cells, determining at least one training candidate cell based on the first cell search training data, updating a classification based on second cell search training data among the first cell search training data and network information about the terminal to obtain an updated classification, the second cell search training data corresponding to the at least one training candidate cell, and determining a valid cell among the plurality of cells based on the updated classification.

Operating method of terminal and terminal

An operating method of a terminal in a wireless communication system including a cell and the terminal includes receiving an external signal including a synchronization signal block (SSB) from the cell, the SSB including a primary synchronization signal (PSS), a secondary synchronization signal (SSS), and a physical broadcast channel (PBCH), obtaining a cell identification number of the cell using the PSS and the SSS, determining a plurality of decoding priorities of a plurality of candidate indexes of the SSB, and performing decoding on the PBCH based on the plurality of decoding priorities.

Terminal and method for performing cell search in wireless communication system

Provided is a method of operating a wireless communication device including a phased array including a first antenna group and a second antenna group to form a beam for transmitting and receiving signals polarized in different directions, which includes receiving first signals polarized in a first direction; receiving second signals polarized in a second direction; measuring power of the first signals and power of the second signals; analyzing a relationship between a channel corresponding to the first receiving beam and a channel corresponding to the second receiving beam; estimating power of third signals that are expected to be received through the first antenna group and power of fourth signals that are expected to be received through the second antenna group; and selecting a receiving beam pattern for wireless communication.

Wireless communication device capable of fast beam selection and method of operation thereof

A wireless communication device including processing circuitry configured to generate first synchronization signal measurement values by combining sets of correlation values, the sets of correlation values being based on a reception signal, and each of the sets of correlation values having a number of correlation values equal to a first accumulation count, determine whether a valid synchronization signal measurement value is detected among the first synchronization signal measurement values based on a criterion, determine a frequency corresponding to the first valid synchronization signal measurement value as a synchronization frequency in response to determining the valid synchronization signal measurement value is detected, determine a second accumulation count in response to determining the valid synchronization signal measurement value is not detected, generate second synchronization signal measurement values based on the second accumulation count, and perform an initial access operation for synchronization with a base station using the synchronization frequency.

Wireless communication device for detecting synchronization signal and method of searching for synchronization signal by using the same

An operation method of an electronic device including: dividing a cell search period into a plurality of partial detection ranges based on the number of partial buffers and a size of the partial buffer; obtaining a first correlation detection information based on a first synchronization signal, while temporarily storing first signals in a first partial buffer among the partial buffers, in which the first signals are received during a first partial detection range among the plurality of partial detection ranges; and obtaining a second correlation detection information for the first signals based on the first correlation detection information and a second synchronization signal, during a second partial detection range among the plurality of partial detection ranges and obtaining the first correlation detection information for second signals based on the first synchronization signal, while temporarily storing the second signals received during the second partial detection range in a second partial buffer.

Method and apparatus for detecting synchronization signal in wireless communication system

An operating method of a terminal performing a cell search using first and second memories for buffering input samples includes detecting a first primary synchronization signal (PSS) group from a first input sample group while buffering the first input sample group in the first memory in a first interval. While buffering a second input sample group in the second memory in a second interval following the first interval, the method detects a second PSS group from the second input sample group, and a first secondary synchronization signal (SSS) group corresponding to the first PSS group from the first input sample group. While buffering a third input sample group in the first memory in a third interval following the second interval, the method detects a third PSS group from the third input sample group, and a second SSS group corresponding to the second PSS group from the second input sample group.

Operating method of terminal in wireless communication system and terminal for performing the method

A system and method for characterizing an interference demodulation reference signal (DMRS) in a piece of user equipment (UE), e.g., a mobile device. The UE determines whether the serving signal is transmitted in a DMRS-based transmission mode; if it is, the UE cancels the serving DMRS from the received signal; otherwise the UE cancels the serving data signal from the received signal. The remaining signal is then analyzed for the amount of power it has in each of four interference DMRS candidates, and hypothesis testing is performed to determine whether interference DMRS is present in the signal, and, if so, to determine the rank of the interference DMRS, and the port and scrambling identity of each of the interference DMRS layers.

Method and apparatus for interference demodulation reference signal detection with serving signal cancellation

A mode switching method and apparatus of a terminal including a camera for acquiring motion information of a user and a plurality of operation modes for power management is provided. The mode switching method includes transitioning, when a motion of a first pattern is detected by the camera, the terminal from an active mode to a standby mode, transitioning, when a motion of a second pattern is detected by the camera, the terminal from the standby mode to an inactive mode, and transitioning, when a first mode switching input is detected in the inactive mode, from the inactive mode to the active mode, wherein the camera acquires the motion information of the user in at least one of the active mode and the standby mode.

Mode switching method and apparatus of terminal

A method and apparatus are presented for transmitting a signal in accordance with an adaptive blind interference alignment (BIA) scheme in a wireless access system. A transmitter configures a first block including desired signals and interference signals on the basis of a number of receivers within a cell and a number of reception modes of the receivers. Further, the transmitter configures a second block including either the desired signals or the interference signals, and configures alignment blocks for each of the receivers by combining the first block with the second block. The transmitter transmits the alignment blocks to the receivers in accordance with transmission symbol patterns corresponding to the alignment blocks. Symbol vectors included in the alignment blocks for each of the receivers are configured to be overlapped between the receivers.

Method for transmitting and receiving data on the basis of adaptive blind interference alignment

Provided are an interference mitigation method and a base station device in a wireless communication system. The interference mitigation method to be performed by a base station comprises a step in which a serving base station measures interference from a terminal that belongs to a neighboring cell; a step of determining a beamforming vector of the neighboring cell on the basis of the measured interference; a step of transmitting the beamforming vector of the neighboring cell to a base station of the neighboring cell; and a step of feeding back, to a terminal that belongs to a serving cell, the beamforming vector of the serving base station determined on the basis of the beamforming vector of the neighboring cell.

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Seoul, South Korea

Sungyoon Cho