Samsung Electronics Co., Ltd.

University of California

Other

Postech Academy-industry Foundation

Postech Foundation

Industry-university Cooperation Foundation Sogang University

Rutgers, the State University of New Jersey

Yonsei University

Beijing Samsung Telecom R&d Center

Dong-seek Park

Jae-Yoel Kim

Hong-Sil Jeong

Young-Kwon Cho

Seung-Hoon Choi

Sung-Eun Park

Eun-Taek Lim

Gyu-Bum Kyung

Chang-Ho Suh

Pan-Yuh Joo

Kyeong-Cheol Yang

Young-Bin Chang

Chi-Woo Lim

John D Villasenor

Sung-Kwon Hong

Ho-Kyu Choi

Chan-Byoung Chae

Se-Ho Myung

Jung-Min Ro

Jae-Weon Cho

Sung-ryul Yun

Joon-Young Choi

Jaehyuk Jang

Hyun-Koo Yang

Hak-Ju Lee

Hae-Young Jun

Hyuk-Choon Kwon

Chang-Yoon Oh

Young-Kyun Kim

Do-Young Kim

Jin-Kyu Koo

Petar Popovski

Seung-Hoon Park

Mi-Hyun Lee

Soo-Yeon Jung

David Mazzarese

Jung-Soo Woo

Yung-Lyul Lee

Su-Ryong Jeong

Elisabeth De Carvalho

Hyun-Jeong Kang

Sung-Jin Lee

Tae-Young Kim

Cheng Shan

Hyeon-Woo Lee

Won-Il Roh

Jeong-Tae Oh

Seok-Hyun Yoon

Ho-dong Kim

Kyun-Byoung Ko

Jae-Yeol Kim

Jeong-Hoon Park

Kathiravetpillai Sivanesan

Young-Ho Kim

Jae-Ho Kim

Song-Nam Hong

Feng Chen

Hyun-Kyu Yu

Jae-Hee Cho

Hai Feng Wang

Jeong-ho Park

Hyoung-Kyu Lim

Eun-Tae Won

Jae-Seung Son

Tae-Han Bae

Ho-Dong Kim

Sung-bum Park

Chan-Soo Hwang

Chung-Gu Kang

Geun-Ho Lee

Ji-Ho Jang

Jiangtao Wen

Joon-Young Cho

Ju-Ho Lee

Young-Bum Kim

Jung-Je Son

Soon-Young Yoon

Kook-Heui Lee

Hee-Won Kang

Young-soo Park

Chang-Hoi Koo

Young-Ho Jung

Hoon Huh

Jae-Hak Chung

Seung-Hoon Nam

Jingyi Liao

Kwan-Hee Roh

Taori Rakesh

Sungtae Kim

Dae-gyu Bae

Dipankar Raychaudhuri

Daesik Hong

In-hwan Kim

Seong-Ill Park

Il-Hwan Kim

Shan Cheng

Chi-Hong Cho

Seok-hyun Yoon

Sie-Joon Cho

Il-Whan Kim

A method and apparatus of transmitting video content compressed by a codec to a second device is provided. The method includes: transmitting a codec selection request frame to the second device, the codec selection request frame includes an identifier of at least one codec to be used to compress the video content and requests approval of the use of the at least one codec; receiving a codec selection response frame from the second device, the codec selection response frame includes approval information indicating whether the use of the at least one codec is approved; and transmitting video content compressed by the at least one codec to the second device based on the codec selection response frame.

Method and apparatus for transmitting video content compressed by codec

A method and apparatus for transmitting compressed video content are provided. The method includes transmitting a codec selection request frame, the codec selection request frame including an identifier of one or more codecs to be used to compress video content and requesting approval of the use of the codec, receiving a codec selection response frame, the codec selection response frame including result information indicating whether the use of the codec is approved, and transmitting video content frames for the video content compressed by the approved codec based on the codec selection response frame. Each video content frame includes frame type information indicating a type of compression applied to the video content included in the video content frame.

Method and apparatus for transmitting video contents compressed by codec

A method of performing hand-over in a personal basic service set (PBSS) including a plurality of stations and one coordinator is provided. An association request frame comprising PCP capability information, and requesting to associate to the PBSS, is received from each of the stations. The PCP capability information comprises information regarding at least one of whether each of the stations supports a power source capability of continuous power supply, whether each of the stations supports a channel time allocation function, and whether each of the stations supports a network clustering function. An association response frame, indicating whether the association request received from each of the stations is approved, is transmitted to each of the stations, and a priority to be a coordinator of the stations is determined based on the PCP capability information. Hand-over is performed with one of the stations according to the determined priority.

Method and apparatus for performing hand-over

Provided are a method and apparatus for generating a packet including uncompressed video data. The method includes: generating color component bit information indicating the number of bits of each color component of pixels of the uncompressed video data; and generating a packet including the color component bit information and the uncompressed video data.

Method and apparatus for generating uncompressed video data packet

An optical communication apparatus includes an optical signal transmitting unit to output an optical signal; an optical signal receiving unit to receive an optical signal; a retro-reflector to retro-reflect the received optical signal in a direction opposite to an incident angle of the received optical signal; and a control unit to direct the retro-reflector to receive the optical signal and to retro-reflect a response signal, which includes the received optical signal and data to be transmitted, in response to the received optical signal.

Method and apparatus for optical communication using a retro-reflector

A method and apparatus for changing a frequency band used for communication between first and second devices supporting multiple frequency bands. The method includes transmitting a frequency band change request frame including information regarding a communication capability of the first device and a frequency band change request for requesting to change a frequency band currently being used for communication between the first and second devices, to the second device; receiving a frequency band change response frame corresponding to the frequency band change request frame, from the second device; and selectively changing the frequency band currently being used to another frequency band based on the received frequency band change response frame.

Method and apparatus for changing frequency band used for communication between devices supporting multiple frequency bands

An apparatus and method for maintaining backward compatibility with a narrow-band wireless communication system in a wide-band wireless communication system is provided. The base station comprises a scheduler, a control information generator, a resource mapping unit and a transmitter. The terminal comprises a resource allocation information checking unit, a receiver and a transmitter.

Apparatus and method for frame structure in wide-band wireless communication system

A method is provided for performing handoff in a communication system including a serving base station (BS) in communication with a mobile station (MS), at least one neighbor BS using a communication scheme different from a communication scheme of the serving BS, and the MS capable of communicating with the neighbor BS. The method includes compensating a signal strength of one of the serving BS and the neighbor BS, received at the MS, such that handoff decision is possible, and determining whether to perform a handoff of the MS, using the compensated signal strengths.

Apparatus and method for performing handoff in a communication system

A method and apparatus for establishing a secured link between devices. In the establishing of the secured link, a coordinator respectively receives from the first and second devices first pairing information indicating that a first device is to establish a secured link and second pairing information indicating that a second device is to establish a secured link. The coordinator further receives via a first secured link established between the first device and the coordinator shared secured information. The shared secured information is shared between the first and second devices. The coordinator establishes a second secured link with the second device based on the shared secured information; and broadcasts partner notice information indicating that the first and second devices are partner devices. The broadcast partner notice information is then used to establish a third secured link.

Method and apparatus for establishing secured link between devices

A matrix multiplier multiplies the signal output from a first adder by an inverse matrix Tof a partial matrix T of a parent parity check matrix, and outputs the multiplication result to a first switch. The output of the matrix multiplier becomes a second parity vector P. A second switch is switched on at a transmission time of the information word vector 's', a third switch is switched on at a transmission time of the first parity vector P, and the first switch is switched on at a transmission time of the second parity vector P. When a puncturing scheme is applied to the parent parity check matrix, a controller controls the first and second switches to puncture the parity according to the corresponding coding rate.

Apparatus and method for encoding and decoding block low density parity check codes with a variable coding rate

A method and system for configuring a frame in a communication system is provided. The method includes determining a number of frames for configuring one multi-frame, wherein the number is at least two, and configuring each of the determined number of frames, wherein the determined number of frames include a first frame and a second frame temporally discriminated from each other, each of the determined number of frames includes a downlink sub-frame and an uplink sub-frame, a downlink sub-frame of the first frame includes a first area for transmitting a reference signal used for an acquisition of synchronization between a base station and a mobile station, a second area including system information and common control information related to the multi-frame, a third area including modulation scheme information and allocation information of data bursts, a fourth area to which a downlink data burst is allocated in a diversity mode and a fifth area to which a downlink data burst is allocated in a band Adaptive Modulation and Coding (AMC) mode, and a downlink sub-frame of the second frame includes a sixth area including modulation scheme information and allocation information of data bursts, a seventh area to which a data burst is allocated in a diversity mode, and an eighth area to which a data burst is allocated in an AMC mode.

Method and system for configuring a frame in a communication system

An apparatus and method for transmitting and receiving a signal and a subcarrier allocation structure therefor in a multi-user multi-antenna communication system are provided, in which a transmitter calculates receive filters for each of a plurality of receivers or for a plurality of antennas in a receiver, determines the index of a vector having a correlation with the calculated receive filters in a preset codebook vector to be a receive filter index, and transmits the receive filter index to the receiver.

Apparatus and method for transmitting and receiving signal and subcarrier allocation structure therefor in a multi-user multi-antenna communication system

A method to transmit a packet of a BS in a communication system using a HARQ scheme is provided. The method includes assigning resource for transmitting a packet to a mobile station, and transmitting a first packet to the mobile station using the assigned resource; transmitting timing information on which a second packet is transmitted to the mobile station when the BS does not receive information indicating that the mobile station decoded the first packet successfully or when the BS receives information indicating that the mobile station failed to decode the first packet; and transmitting the second packet to the mobile station on a timing point corresponding to the timing information.

Hybrid automatic repeat request system and method thereof in a communication system

A broadband wireless communication system supporting frequency overlay is provided. Operations of a base station includes checking whether it is time to transmit a common control signal; switching positions of a first Common Control Channel and a second Common Control Channel applied to a previous transmission of the common control signal while mapping a common control signal to the first Common Control Channel and the second Common Control Channel positioned in different Frequency Assignments; and transmitting the common control signal via the first Common Control Channel and the second Common Control Channel that are switched.

Apparatus and method for employing common control channel and broadcast channel in a broadband wireless communication system with frequency overlay

Growing community of inventors

Yongin-si, South Korea

Dong-seek Park