Samsung Electronics Co., Ltd.

Korea Advanced Institute of Science and Technology

Hyun-Kyu Yu

Jeong-ho Park

Su-Ryong Jeong

Tae-Young Kim

Ji-Yun Seol

Cheol Mo Jeong

Jae-Weon Cho

Chi-Woo Lim

Jae-Won Kim

Tae-young Kim

Min Sagong

Sung-Nam Hong

Kyung-Whoon Cheun

Seung-Hoon Park

Hyun-Seok Ryu

Hyun-Jeong Kang

Ho-Kyu Choi

Wan Gyun Choi

Won-Il Roh

Peng Xue

Mi-Hyun Lee

Sang-Won Choi

Yeong-Moon Son

Jung-Hoon Lee

Joon-Young Choi

Jeong-Ho Park

Jong-Ho Oh

Hyuk-Min Son

Rakesh Taori

Dong-seek Park

Jae-Seung Son

Sung-Eun Park

Kang-jin Yoon

Song-Nam Hong

Jae-Eun Kang

Shuangfeng Han

Sang-Hyun Chang

Noh-Gyoung Kang

Nam-Jeong Lee

Dae-Kyu Shin

Ki-Chun Cho

Jaehyuk Jang

Jung Hoon Lee

Hee-Won Kang

Jae-Hee Cho

Beom-Sik Bae

Seung-Hoon Choi

Jung-Shin Park

Dae-Hyun Kim

Yong-Seok Kim

Chang-Hyun Kim

Kyung-Kyu Kim

Won-Suk Chung

Jae-Jeong Shim

David Mazzarese

Hwa-Sun You

Sung-Kwon Hong

Woo-Myoung Park

Dae-Sik Hong

Dong-Seek Park

Petar Popovski

Bo-Hyun Kang

Dong-Hwi Roh

Young-Kyun Kim

Sung-Rok Yoon

Won-Suk Choi

Myung-Gil Kang

Jung-Min Yoon

Jung-shin Park

Elisabeth De Carvalho

Byoung Hoon Jung

Byung-Hwan Lee

Kil-Sik Ha

Jae-won Kim

Beom-Ju Kim

Do-Young Jung

Tang Yang

Jae-Weon Choi

Chang-Hyun Baik

Sung-Kyu Jung

Chang-hyun Kim

A base station and terminal use methods of obtaining synchronization and system information in a wireless communication system. An operation of a base station includes generating a synchronization signal to be transmitted through a Synchronization Channel (SCH), generating a broadcast signal to be transmitted through a Broadcast Channel (BCH), and transmitting repetitively the SCH and the BCH by performing beamforming on the channels with different transmission beams.

Apparatus and method for synchronizing and obtaining system information in wireless communication system

A method and apparatus for transmitting and receiving data in a communication system using beamforming are provided. The transmission method includes transmitting a control channel signal in a control channel region of a subframe using a first transmission beam of a base station. The transmission method also includes transmitting a data signal during a predetermined time period of a data region after the control channel region in the subframe using a second transmission beam determined based on the first transmission beam. The transmission method further includes transmitting a data signal in a remaining data region following the predetermined time period using a scheduled transmission beam.

Method and apparatus for transmitting and receiving data in a communication system using beamforming

An apparatus implements methods for random access in a wireless communication system using beamforming. A Subscriber Station (SS) measures a best downlink transmission beam among downlink transmission beams transmitted from a Base Station (BS), and transmits Random Access Channel (RACH) information, which includes indication information indicating the best downlink transmission beam, to the BS. The BS receives RACH information which includes indication information indicating a best downlink transmission beam among downlink transmission beams, and detects a RACH sequence and the best downlink transmission beam from the received RACH information.

Apparatus and method for random access in wireless communication system using beamforming

An apparatus and method for selecting the best beam in a wireless communication system are provided. An operation of a Base Station (BS) includes repeatedly transmitting reference signals beamformed with a first width, receiving a feedback signal indicating at least one preferred-beam having the first width from at least one terminal, determining a direction range within which reference signals beamformed with a second width are to be transmitted and a transmission pattern, based on the at least one preferred-beam having the first width, repeatedly transmitting the reference signals beamformed with the second width within the determined direction range according to the transmission pattern, and receiving a feedback signal indicating at least one preferred-beam having the second width from the at least one terminal.

Apparatus and method for selecting best beam in wireless communication system

A method by which a small base station (BS) transmits a discovery signal (DS) in a mobile communication system is provided. The method includes a macro BS to which a component carrier (CC) of a predetermined frequency band is allocated, and at least one small base station to which N number of CCs of a frequency band different from that of the CC allocated to the macro base station are allocated. The method comprises the steps of generating the DS corresponding to predetermined information and transmitting the generated DS through a discovery channel (DCH) configured as a transmission resource of the macro base station, wherein the predetermined information is one among information on at least one CC that the small base station uses, cell ID (CID) index information of the small base station, and a sleep base station index when the small base station is in a sleep mode.

Device and method for transmitting and receiving discovery signal of base station in mobile communication system

The present disclosure relates to a communication technique for converging, with an IoT technology, a 5G communication system for supporting a higher data transmission rate than a 4G system, and a system therefor. The present disclosure may be applied to intelligent services, such as smart homes, smart buildings, smart cities, smart cars or connected cars, health care, digital education, retail businesses, and security and safety related services, on the basis of 5G communication s technologies and IoT-related technologies. To this end, a communication device may determine control information for a superposition transmission, and acquire selection sources in response to the determined control information. The communication device may transmit a preamble sequence on the basis of the acquired selection sources in a preamble transmission area according to the superposition transmission, and transmit data using the determined control information in a data superposition transmission area according to the superposition transmission.

Device and method for transmitting/receiving data in wireless communication system

An apparatus implements methods for random access in a wireless communication system using beamforming. A Subscriber Station (SS) measures a best downlink transmission beam among downlink transmission beams transmitted from a Base Station (BS), and transmits Random Access Channel (RACH) information, which includes indication information indicating the best downlink transmission beam, to the BS. The BS receives RACH information which includes indication information indicating a best downlink transmission beam among downlink transmission beams, and detects an RACH sequence and the best downlink transmission beam from the received RACH information.

The present disclosure relates to a 5-Generation (5G) or pre-5G communication system to be provided to support a higher data rate than a 4-Generation (4G) communication system like Long Term Evolution (LTE). A method for transmitting a signal in a communication system according to an embodiment of the present disclosure includes generating a Golay sequence for a weight value in which a correlation peak value is less than a preset threshold value, configuring a Short Training Field (STF) including the generated Golay sequence, and transmitting a signal for a Physical layer convergence procedure Protocol Data Unit (PPDU) including the STF.

Apparatus and method for transmitting and receiving signal in communication system

A method for performing synchronization by a device in a device to device (D2D) communication system is provided. The method includes transmitting a first synchronization signal, and transmitting offset information indicating a time difference between a synchronization reference time of the first synchronization signal and a transmission time of the first synchronization signal.

Method and apparatus for synchronization in device to device communication system

The present disclosure is related to a 5generation (5G) or pre-5G communication system to provide higher data rates than a 4generation (4G) communication system such as long term evolution (LTE). A method for adjusting a receive beam gain by a user equipment (UE) in a wireless communication system is provided. The method includes estimating a received signal quality value based on a reference signal received from a base station (BS), transmitting information about the estimated received signal quality value to the BS, comparing the received signal quality value with a minimum received signal quality value required for successful reception of data from the BS, and adjusting a receive beam gain to be used for data reception by turning on/off a radio frequency (RF) chain formed for each of antennas included in the UE based on a result of the comparison.

Apparatus and method for adjusting receive beam gain in a wireless communication system

The present invention relates to a 5-generation (5G) or pre-5G communication system to be provided to support a higher data transmission rate beyond a 4-generation (4G) communication system such as long term evolution (LTE). The present invention relates to a method for performing a random access process by a base station in a communication system supporting a beamforming scheme, the method comprising the steps of: transmitting information on a reception beam corresponding to each unit time interval; performing, in each unit time interval, a reception beam sweeping process on the basis of the reception beam corresponding to each unit time interval; stopping the reception beam sweeping process when, in the process of performing the reception beam sweeping process, it is detected that a random access process should be performed with a UE in a specific unit time interval; and performing the random access process with the UE.

Apparatus and method for performing random access process in communication system supporting beamforming scheme

Growing community of inventors

Yongin-si, South Korea

Hyun-Kyu Yu