Samsung Electronics Co., Ltd.

Sungkyunkwan University

Industry-university Cooperation Foundation Hanyang University

Hi-Chan Moon

Jung-su Han

Young-Ky Kim

Joon-Young Cho

Ju-Ho Lee

Jae-min Ahn

Jun-Sung Lim

Hee-Won Kang

Jong-Han Kim

Jae-Yoel Kim

Soon-Young Yoon

Jin-Soo Park

Ho-Kyu Choi

Sung-Oh Hwang

Hyun-Woo Lee

Hyun-Seok Lee

Sung-Ho Choi

Chang-Hoi Koo

Seung-Joo Maeng

Chang-soo Park

Hyeon-Woo Lee

Hyun-Suk Lee

Chae-Man Lim

Jin-Woo Choi

Kyou-Woong Kim

Jae-Hyun Park

Youn-Sun Kim

Min-Goo Kim

Jin-Ho Kim

Jin-ho Kim

Dong In Kim

Inkyu Lee

Yun-Ok Cho

Seong-Woo Ahn

Jong-Yoon Hwang

Chang-Soo Park

Seong-III Park

Sun-Mi Kim

Ki-Ho Jung

Jae-Heung Yeom

Seong-Ill Park

Jong-hun Rhee

Jong-Han Lim

Sang-Hwan Park

Seung-Hyun Kong

Dong-Ryeol Ryu

Jae-Min Ahn

Hyun-Jung Mun

Yong-Sun Hwang

Yoo-Chang Eun

Soung-Joo Maeng

Young Ky Kim

Jeong-Gu Lee

Ki-Sung Jung

Jong Yoon Hwang

Seung-Chul Hong

Sang-Sung Han

Seung-Ah Chae

Mi-Seong Jin

Seong-Hyeon Moon

Jee-Min Ahn

Soon-Young Y Oon

Jung-Su Han

Hyun-Woo Byeoksan Apt Lee

Jae-Min Puleun Samho Apt 109-303 Ahn

Jae-Min; Ahn

Hyeon-Woo; Lee

The present disclosure relates to a pre-5-generation (5G) or 5G communication system to be provided for supporting higher data rates beyond 4th-generation (4G) communication system such as long term evolution (LTE). A method of operating a remote node in a wireless communication system includes: determining each of instantaneous channel states between host nodes and the remote node based on reference signals received from the host nodes during some of time intervals for a channel estimation; determining a host node for random access among the host nodes based on the determined instantaneous channel states; and when a value indicating a state of a channel between the determined host node and the remote node is larger than a threshold value, transmitting a signal for the random access to the host node.

Apparatus and method for random access in wireless communication system

A method for receiving data over a plurality of carrier components at a Mobile Station (MS) is provided. The method includes receiving, from a Base Station (BS), resource allocation information including a first allocation information indicating at least one resource allocated to a first carrier component in a first subframe and a second allocation information indicating at least one resource allocated to a second carrier component in a second subframe and receiving data, from the BS, on the at least one resource of the first carrier component and on the at least one resource of the second carrier component based on the resource allocation information.

Method and apparatus for transmitting and receiving data over carrier component in a multi-carrier mobile communication system

A method for receiving control information by a User Equipment (UE) in a wireless communication system is provided. The method includes monitoring channel quality of a control channel, determining whether reconfiguration of the control channel is needed, based on the channel quality of the control channel, if the reconfiguration of the control channel is needed, requesting an evolved Node B (eNB) to reconfigure the control channel, and receiving the control information through the reconfigured control channel.

Method and apparatus for reconfiguring control channel in wireless communication system

An apparatus is capable of transmitting a signal through a Random Access Channel in a wireless communication system. The method of transmitting a signal through a random access channel includes estimating a reverse channel status using a signal received through a forward link, determining whether to transmit a signal through a random access channel in consideration of the reverse channel status, and transmitting a signal through the random access channel when it is determined to transmit a signal through the random access channel.

Apparatus and method for random access channel transmission considering reverse channel status in wireless communication system

An apparatus and method for transmitting/receiving a Channel State Information-Reference Symbol (CSI-RS) in a relay network system are provided. The method for transmitting a CSI-RS in a relay network system includes selecting a subframe to transmit a CSI-RS, from DownLink (DL) subframes, transmitting, to a receive end, identifying information indicating that a CSI-RS is transmitted at the selected subframe, and transmitting a CSI-RS at the selected subframe.

Apparatus and method for transmitting and receiving channel state information reference symbol in relay network system

A method for transmitting a preamble over a Random Access CHannel (RACH) in a wireless communication system is provided. The method includes generating a preamble having a length longer than a basic transmission unit, and dividing the preamble into preambles having a length less than the basic transmission unit; and sequentially transmitting the divided preambles over the RACH using different antennas.

Method and apparatus for transmitting/receiving preamble of random access channel in a broadband wireless communication system

An apparatus and a method for a cluster-based power control at a macro base station in a wireless communication system are provided. The method includes broadcasting an interference allowance value determined based on a predefined aggregate interference to a femto cell, updating the interference allowance value with consideration of a channel activity for each femto cell group on a cluster basis, and when detecting a change in an aggregate interference generated due to femto cell power allocation, repeating determination of an interference allowance value so that a Quality of Service (QoS) of a macro cell user is met, and broadcasting the interference allowance value to a femto cell.

Apparatus and method for cluster based opportunistic power control in wireless communication system

A method for feeding back Channel Quality Information (CQI) by a terminal in a Multi-User Multi-Input Multi-Output (MU-MIMO) communication system is provided. The method includes receiving a signal from a base station, determining a lower limit of an average Signal to Interference plus Noise Ratio (SINR) for the received signal, and determining the lower limit of an average SINR as CQI, and feeding back the CQI to the base station.

Method and apparatus for feeding back channel quality information in multi-user multi-input multi-output communication system

A method and apparatus for transmitting and receiving data in a multi-carrier mobile communication system are provided, in which a Mobile Station (MS) reports to a Base Station (BS) a number of Carrier Components (CCs) over which the MS can simultaneously receive data, receives from the BS monitoring CC set information indicating as many monitoring CCs as the reported number of CCs or fewer monitoring CCs than the reported number of CCs, and receives data based on the monitoring CCs indicated by the monitoring CC set information from the BS.

An apparatus and method allocate resources in a communication system including at least one relay station (RS). A control channel carrying control information from a BS to an MS is allocated into a first time region of a subframe. A data channel carrying data from the BS to the MS, an RS-control channel carrying control information from the BS to an RS, and an RS-data channel carrying data from the BS to the RS are allocated into a second time region of the subframe, using Frequency Division Multiplexing (FDM). And the subframe into which the control channel, the data channel, the RS-control channel and the RS-data channel are allocated is transmitted.

Apparatus and method for allocating resources in a communication system

An apparatus and a method for transmitting and receiving control information in a Multiple Input Multiple Output (MIMO) system are provided. A method of a base station for transmitting control information to a terminal in the MIMO system includes transmitting first control information for every transmission mode except for a Multiple-User (MU)-MIMO mode, to the terminal over a control channel of a subframe, and transmitting second control information for the MU-MIMO mode to the terminal over a data channel of the subframe.

Apparatus and method for transmitting and receiving control information in multiple input multiple output system

A synchronization (sync) code communication device for a CDMA communication system. A base station sync code transmission device comprises a primary sync code transmitter and a secondary sync code transmitter. The primary sync code transmitter is for generating and then transmitting a primary sync code at a first location in a transmission frame. The primary sync code is for acquiring synchronization at a starting point of a frame and the frame is equal to one period of a spreading code. The secondary sync code transmitter is for generating and then transmitting a secondary sync code at a second location in a frame. The secondary sync codes are assigned to base station groups, one to a group. A mobile station sync code receiving device comprises a primary sync code acquisition decider and a base station group decider. The primary sync code acquisition decider is for acquiring a primary sync code received at a first location in a frame, and then acquiring synchronization at a starting point of a frame. The base station group decider is enabled upon acquisition of the primary sync code, receives a secondary sync code transmitted at a second location in the frame, and then determines the base station group to which the transmitting base station belongs.

Apparatus and method for synchronizing channels in a WCDMA communication system

A rake reception apparatus for determining whether a paging channel is received in a mobile terminal using a Discontinuous Reception (DRX) mode. A searcher searches for a multi-path signal using a received signal output from a Radio Frequency (RF) part, and calculates an energy value for each hypothesis. A demodulator demodulates a Paging Indicator (PI) for a hypothesis for which an energy value calculated by the searcher exceeds a valid path threshold. A controller determines whether a paging channel is received, according to the demodulated signal output from the demodulator, and performs finger allocation using a multi-path search of the searcher if it is determined that the paging channel is transmitted.

Rake reception apparatus and method in a mobile terminal

A channel communication apparatus and method are provided for a CDMA communication system method for acquiring signals from multiple adjacent base stations by a terminal; for providing more efficient set management; for providing more efficient multipath acquisition and finger assignment; and for acquiring a signal sent from an adjacent base station and a multipath signal which can reduce power consumption and hardware complexity in the terminal. The apparatus and methods also accurately measure the power or time delay of a signal received from a base station by a terminal in a CDMA communication system.

Channel communication apparatus and method in CDMA communication system

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Seoul, South Korea

Hi-Chan Moon