Samsung Electronics Co., Ltd.

Fairchild Korea Semiconductor Ltd.

Ls Mtron Ltd.

Silicon Mitus, Inc.

Daewoo Pharmaceutical Ind. Co., Ltd.

Qualcomm Incorporated

Nokia Solutions and Networks Oy

Dong-Hee Kim

Hwan-Joon Kwon

Jin-Kyu Han

Jae-Chon Yu

Youn-Sun Kim

Yu-Chul Kim

Yeon-Ju Lim

Dae-Gyun Kim

Ho-Kyu Choi

Ju-Ho Lee

Kyeong-In Jeong

Joon-Young Cho

Jung-Soo Jung

Beom-Sik Bae

Yun-Ok Cho

Cheol Mun

Byung-Sik Kim

Seung-Kyun Oh

Jin-Weon Chang

Jung-Won Kim

Kyung-Goo Lee

Jae-Hyun Park

Jae-Soon Choi

Jung-hoon Choi

Dong-Hun Lee

Sang-Hwa Jung

Hong-Gyu Han

Jung-Hoon Choi

Myung-Hoon Kang

Kyung-Ran Kang

Sung-Woo Hwang

Sung-Uk Chung

Jae-Seon Kang

Young-Hoon Ji

Farooq Khan

Young-Bum Kim

Zhouyue Pi

Taehyun Kim

Chang-Hoi Koo

Peter Jung

Pan-Yuh Joo

Cornelius Van Rensburg

Kyung-Joo Suh

Hoon Huh

Sang-Jin Lee

Tobias Scholand

Yu-Suk Yun

Jae-Sung Jang

Jong-hun Rhee

Dong-Young Huh

Sungmin Jang

Jung-Ae Kim

Achim Seebens

Dae-Jung Kim

Min-Kyeong Kim, Legal Representative

Chun-Gyu Kim

Haeyong Choi

Jiwoon Lee

Tae-Hyun Ko

Jea-Gon Seo

Jae-Gon Seo

Dong-Hoon Lee

Anastasios Giovanidis

Aydin Sezgin

Stefan Schiffermuller

Hwan Joon Kwon

Myoung-Won Lee

Han-Kyu Park

Jae-Chen Yu

Seok-Mun Choi

You-Ra Kang

Kyung-Hae Choi

Hyun-Ho Chang

A desiccant replacing apparatus may include a supply-discharge member, a supply connection line connected to the supply-discharge member, an air conveyor coupled to the supply connection line, a discharge connection line connected to the supply-discharge member, and an air amplifier coupled to the discharge connection line. The supply-discharge member may include a housing providing an internal space, an injection line providing an injection path and penetrating the housing, an exhaust line providing an exhaust path connected to the internal space, and a filter in the internal space or the exhaust path. The supply connection line may be connected to the injection line, and the discharge connection line may be connected to the exhaust line.

Desiccant replacing apparatus and air dry system including the same

An apparatus and method are provided for feeding back channel quality information and performing scheduling using the fed-back channel quality information in a wireless communication system based on Orthogonal Frequency Division Multiple Access (OFDMA). In the OFDMA wireless communication system, forward performance degradation due to a decrease in an amount of reverse channel quality information is reduced, and also an increase in the reverse load due to channel quality information feedback is suppressed. A base station controls power of a physical channel using information fed back from a mobile station. In a method for feeding back channel quality information from the mobile station, sub-band-by-sub-band channel quality information is measured and channel-by-channel quality information of a number of channels is transmitted in order of sub-bands of better channel quality information. Average channel quality information for a total band is measured and transmitted.

Apparatus and method for feeding back channel quality information and scheduling apparatus and method using the same in a wireless communication system

Methods and apparatuses are provided for receiving control information by a terminal. A control channel message is received on a control channel. Control information comprising a transmission rank and precoding matrix information is extracted from the control channel message if a common pilot is used for data demodulation. The control information comprising the transmission rank and information about a dedicated pilot is extracted from the control channel message if the dedicated pilot is used for the data demodulation.

Method and apparatus for managing control channel in a mobile communication system using multiple antennas

Methods and apparatus are provided for transmitting data in a communication system with a plurality of antennas. The transmitter generates a first pilot signal and a second pilot signal. Data, the first pilot signal, and the second pilot signal are transmitted over a wireless network. The first pilot signal is transmitted at a first position in a time domain in each transmission time interval of the data over each frequency in a frequency domain used to transmit the data, and the second pilot signal is transmitted at a second position known by the transmitter and a receiver in the time domain and the frequency domain of a transmission time interval.

Transmission/reception apparatus and method for supporting MIMO technology in a forward link of a high rate packet data system

Methods and apparatus are provided for transmitting and receiving data in a wireless communication system. Resource allocation information is received and hopping-related information is identified. A resource for transmitting data is determined based on the resource allocation information and hopping-related information, and data is transmitted on the determined resource. A sub-band is determined from a plurality of sub-bands based on the first hopping parameter and a resource in the determined sub-band is determined based on the second hopping parameter.

Apparatus and method for performing resource allocation and communication in a wireless communication system, and system using same

A method apparatus and system for efficiently transmitting and receiving channels are provided in a wireless communication system based on Orthogonal Frequency Division Multiplexing (OFDM). A multiplexing scheme differs according to a channel when a transmitter transmits a packet data channel, a common control channel and a control channel designated for a particular user. Uncoded 1-bit information is broadly dispersed in frequency and time domains using multiplexing technology for maximizing diversity gain in a channel for transmitting information of at least one bit to a particular user like an acknowledgement (ACK) channel. The transmitter converts a sequence obtained by multiplexing multiple bits to be transmitted to a plurality of users to parallel signals, and broadly disperses the parallel signals in the time and frequency domains. When the uncoded 1-bit information is transmitted, reception reliability is improved because channel coding and transmission are efficiently performed using a small amount of resources.

Method, apparatus, and system for transmitting and receiving information of an uncoded channel in an orthogonal frequency division multiplexing system

Methods and apparatuses are provided for transmitting feedback information in a communication system supporting multiple transmission methods with multi antenna transmission. Information for a default Multiple Input Multiple Output (MIMO) mode is received. It is determined whether the default MIMO mode is a Single-User MIMO mode or a Multi-User MIMO mode based on the information for the default MIMO mode. First Channel Quality Indicator (CQI) feedback information is calculated for one of the Single-User MIMO mode and the Multi-User MIMO mode determined as the default MIMO mode. The first CQI feedback information and DELTA CQI feedback information, which is a differential value between the first CQI feedback information and second CQI feedback information for a non-default MIMO mode, are transmitted.

Method and apparatus for transmitting/receiving feedback information in a wireless packet data communication system

An apparatus and method for transmitting/receiving data in a mobile communication system using multiple antennas are provided. A receiver estimates a fading channel of received data, selects a weight set relative to a maximum data transmission rate from at least one weight set with elements of a plurality of orthogonal weight vectors, and transmits feedback information including the selected weight set and channel-by-channel state information to a transmitter. The transmitter demultiplexes data to be transmitted on a basis of the feedback information into at least one sub-data stream, multiplies each sub-data stream by an associated weight, and transmits the data.

Apparatus and method for transmitting/receiving data in a mobile communication system using multiple antennas

A method and apparatus for controlling an uplink transmission power in a mobile station of a mobile communication system. The method includes transmitting uplink data in a first transmission interval, receiving a transmission power control information over a downlink control channel, and determining a transmission power of uplink data to be transmitted in a second transmission interval. The transmission power is determined based on the received transmission power control information and a transmission power of the uplink data transmitted in the first transmission interval. The first transmission interval and the second transmission interval are included in a same Hybrid Automatic Retransmission reQuest (HARQ) process.

Method and apparatus for controlling an uplink transmission power ratio in a mobile communication system

An apparatus and method are provided for feeding back channel quality information and performing scheduling using the fed-back channel quality information in a wireless communication system based on Orthogonal Frequency Division Multiple Access (OFDMA). A base station controls power of a physical channel using information fed back from a mobile station. In a method for feeding back channel quality information from the mobile station, sub-band-by-sub-band channel quality information is measured and channel-by-channel quality information of a number of channels is transmitted in order of sub-bands of better channel quality information. Average channel quality information for a total band is measured and transmitted.

Methods and apparatuses are provided for receiving control information by a terminal. A control channel message is received on a control channel. Control information is extracted from the control channel message. The control information includes a transmission rank and precoding matrix information if a common pilot is used for data demodulation. The control information includes the transmission rank and information about a dedicated pilot if the dedicated pilot is used for the data demodulation.

Growing community of inventors

Yongin-si, South Korea

Dong-Hee Kim