Samsung Electronics Co., Ltd.

Sungkyunkwan University

Dahae Chong

Joohyun Do

Seokho Yoon

Sungyoon Cho

Haechul Lee

Youngpo Lee

Beomkon Kim

Myungjoon Shim

Junhwan Kim

Seung Goo Kang

Bora Lim

Shinwoo Kang

Youngyoon Lee

Sangho Ahn

Seungjoong Hwang

Taeung Yoon

A wireless communication device includes a plurality of antenna modules at different positions, a first radio frequency (RF) integrated circuit, and processing circuitry configured to select one antenna module from among the plurality of antenna modules to obtain a selected antenna module, perform communication using the selected antenna module and the first RF integrated circuit, monitor signal quality through at least one of the plurality of antenna modules to obtain a monitoring result, and control switching from the selected antenna module to another antenna module among the plurality of antenna modules based on the monitoring result, the switching including selectively switching a connection of the first RF integrated circuit from the selected antenna module to the other antenna module.

Wireless communication device including antenna modules and operating method of wireless communication device

A baseband circuit that receives, from a RFIC, and being configured to process, a signal including a plurality of synchronization signal blocks generated in a neighbor cell and a signal including radio resource control parameters generated in a serving cell, includes: a storage; a controller configured to write/read data to/from the storage; and a signal processor controlled by the controller, wherein the controller sets a number of measurement target SSBs based on the RRC parameters, wherein the signal processor checks a validity of the set number of SSBs, and the controller stores valid SSB information in the storage based on the checking result, verifies a number of valid SSBs based on the stored valid SSB information, and controls the signal processor or invalidates the neighbor cell so that the signal processor measures reference signal received power of the neighbor cell based on a verification result.

Apparatus and method for improving handover performance in wireless communication system

The present disclosure relates to an apparatus for wireless communication. The wireless communication apparatus comprises a baseband processor and a controller. The baseband processor is configured to generate state information about a channel of the wireless communication by processing a baseband signal. The controller is configured to activate a low power operation in a first channel state, where a channel quality is reduced compared to than a second channel state, based on the state information.

Apparatus and method for controlling power consumption in wireless communication

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

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 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

Disclosed herein are a method of generating a correlation function with no side-peak and a system for tracking a BOC signal in order to synchronize the BOC signal. The method of generating a correlation function includes step Sof generating sub-correlation functions {S(&#x3c4;)}, step Sof generating a first final correlation function R(&#x3c4;) by combining some of the sub-correlation functions, and step Sof generating a second final correlation function R(&#x3c4;) by combining R(&#x3c4;) with each of the remaining sub-correlation functions that have not been used for the combination at step S. The BOC signal is one or more of BOC(kn,n) and BOC(kn,n) signals.

Method of generating correlation function with no side-peak and system for tracking binary offset carrier signal

A method and an apparatus of estimating a frequency offset in a wireless communication system are provided. An orthogonal frequency division multiplexing (OFDM) receiver performs envelope equalized processing (EEP) with respect to a reception signal and calculates a partial periodogram with a plurality of test values based on the reception signal which goes through the EEP. The OFDM receiver estimates a first frequency offset, a second frequency offset, and a third frequency offset based on two partial periodograms adjacent to each other among the partial periodograms for the plurality of test values.

Method and apparatus of estimating frequency offset based on partial periodogram in wireless communication system

A synchronization method in a Ultra Wideband (UWB) receiver includes receiving a signal through a multipath channel, and synchronizing with a first multipath component of the received signal by computing a correlation value between the received signal and a template signal of the receiver in a predetermined search range. Since multipath components received at the receiver after the first multipath component of the received signal have lower power than that of the first multipath component, the synchronization with the first multipath component of the received signal may improve the performance in processes after the synchronization process.

Methods of synchronizing with first multipath component in ultra wideband receiver and ultra wideband receivers using the same

An integer frequency offset estimation scheme in an orthogonal frequency division multiplexing (OFDM)-based system is disclosed. A receiving apparatus for receiving a signal according to an OFDM includes an OFDM symbol acquisition module for acquiring at least two consecutive OFDM symbols, a symbol operation module for operating upon pilot symbols and/or data symbols belonging to frequency bands determined according to a plurality of candidates for integer frequency offsets among a plurality of pilot symbols and a plurality of data symbols included in the acquired OFDM symbols, and an integer frequency offset estimation module for selecting a final integer frequency offset among a plurality of candidates for integer frequency offsets according to magnitudes of operation values obtained by the symbol operation module, wherein the frequency bands determined according to the candidate for integer frequency offsets are obtained by frequency-shifting preset frequency bands at which all pilot symbols are transmitted according to the candidate for integer frequency offsets.

Growing community of inventors

Suwon-si, South Korea

Dahae Chong