Samsung Electronics Co., Ltd.

Inha-industry Partnership Institute

Samsung Electro-mechanics Co., Ltd.

Korea Advanced Institute of Science and Technology

Yonsei University

Tae In Hyon

Hyo Sun Hwang

In Sun Lee

Hyun Ho Choi

Kyung Hun Jang

Young Soo Kim

Hyun Gi Ahn

Youngsoo Kim

Tae Soo Kwon

Jae Hak Chung

Jae Myoung Kim

Sang Jo Yoo

Chang Soon Park

Sung Jin Kim

Young Jun Hong

Wan Gyun Choi

Sung Soo Park

Jung Hyun Park

Sooyong Choi

Seok Won Lee

Ki Ho Kim

Jae Sup Lee

Dong Jo Park

Dae Sik Hong

Yong Ho Cho

Yoon Chae Cheong

Minchae Jung

Youngnam Han

Kyuho Hwang

Seungmo Kim

Yang Soo Kwon

Young Gun Ji

Kyoung Jin Jo

Sung Hwan Sohn

Hyung Sik Ju

A mobile system and a base station system for effectively using a licensed spectrum and a shared spectrum are provided. The mobile system includes: an initialization unit to initialize transmitting and receiving of data using at least one of the licensed spectrum and the shared spectrum; a sensing unit to sense a spectrum for transmitting and receiving of the data via the at least one spectrum; and a transceiver to transmit and receive the data via the sensed spectrum.

Mobile system and base station system for effectively using licensed spectrum and shared spectrum

Provided are a method and apparatus for controlling signal interference between networks in a personal area network. In one embodiment, an interference control apparatus may include: a cooperation determining unit configured to determine whether to perform a wireless cooperation with a neighboring mobile hub that manages a neighboring sensor node, based on a magnitude of an interference signal from the neighboring sensor node; a transmitter configured to transmit, to the neighboring mobile hub via a first communication link, first information received from a target sensor node; a receiver configured to receive the first information from the target sensor node via a second communication link, and to receive second information from the neighboring mobile hub via the first communication link; and a decoding unit configured to perform wireless cooperative multi-user decoding based on the first information and the second information.

Interference control system for simultaneously supporting low power communication and high spectral efficient communication

An ultra-low power wireless communication apparatus and an ultra-low power wireless communication method are provided. The ultra-low power wireless communication apparatus includes a sensing unit configured to sense state information of frequency channels in a frequency band. The ultra-low power wireless communication apparatus further includes a channel determining unit configured to divide the frequency band into frequency bands based on an allowable output power, assign a priority to one of the frequency bands that includes an output power that is less than or equal to the allowable output power, and determine a communication channel based on the state information of the frequency channels.

Ultra-low power wireless communication apparatus and method

Provided are low-power wireless communication apparatuses and a method thereof. A hub may receive a beacon signal from a neighboring hub that is within a predetermined area from the hub, and control an operation of a node served by the hub based on information received from the neighboring hub.

Low power wireless communication apparatuses and method thereof

A mini base station connectable with the Internet including a frequency recognition unit to recognize a frequency band of an external signal transmitted from a cellular base station; and an operation frequency determination unit to determine an operation frequency band according to interference generated with the cellular base station based on the recognized frequency band of the external signal.

Mini base station connectable with internet and terminal

A main hub, a sub hub, and a sensor node communicating in a wireless body area network (WBAN) including at least one sub hub, and a communication method thereof, are provided. A communication method of the main hub, includes assigning a beacon slot to the sub hub. The method further includes receiving, from the sub hub, a beacon signal based on the beacon slot. The method further includes verifying whether the sub hub includes data to be transmitted to the main hub based on the beacon signal. The method further includes receiving, from the sub hub, the data based on a result of the verification.

Main hub, sub hub, and sensor node communicating in wireless body area network (WBAN) including at least one sub hub, and communication method thereof

An operation method of a radio communication station is provided. The operation method of a radio communication station, the operation method including: transmitting a basic pilot signal to at least one terminal located in a coverage of a preoccupied system; and transmitting a cognitive radio (CR) pilot signal.

Frequency spectrum sensing method using pilot signal and cognitive radio system using the same

An access point (AP) and a mobile station in a wireless communication system and a method of controlling the same are provided. A method of controlling an AP in a wireless communication system includes: determining whether a transmission of a control message is needed; transmitting the control message via a first frequency band when the transmission of the control message is needed; determining whether a transmission of a data message is needed; and transmitting the data message via a second frequency band when the transmission of the data message is needed.

Access point, mobile station for wireless communication system, and method for controlling the same

Provided is a wireless communication system between medical devices. A wireless communication apparatus between medical devices using a cognitive technology may receive, from an external frequency coordination database server, state information of frequencies that are available in a predetermined area, and store interference information associated with the frequencies. The communication apparatus may sense an external interference signal that affects the frequencies outside the predetermined area, and an internal interference signal that affects the frequencies within the predetermined area. The communication apparatus may determine a priority of each of the frequencies that are available in the predetermined area based on the interference information, the external interference signal, and the internal interference signal, and may determine a frequency to be assigned based on the priority.

Wireless communication system between medical devices using cognitive technology

An apparatus for storing handover information in a mobile communication system is provided. The apparatus includes an estimation unit configured to estimate a direction of arrival (DOA) of a received signal with respect to a first base station based on the received signal, the received signal being received from a terminal belonging to the first base station, and a storage unit to store the estimated DOA as handover information associated with a second base station when the terminal is handed over to the second base station.

Apparatus and method for storing hand over information

A system of controlling an antenna of a moving object is provided. The system includes: a plurality of communication antennas established in the moving object; an environmental information generation unit generating environmental information which includes strength information of a received signal and moving speed information of the moving object; an antenna use determination unit determining, with respect to the plurality of communication antennas, a number of antennas for each use based on the environmental information; and an antenna assigning unit assigning the plurality of communication antennas for each use according to the determined number of antennas.

Method of controlling antenna of moving object and system using the same

A base station and a mobile station for processing wireless communication with each other, and a method for controlling the same are provided. The method for controlling a base station which performs radio communication with a mobile station includes starting radio communication via at least one arbitrary mobile station and a predetermined cellular channel; receiving Channel Quality Indication (CQI) information from the mobile station; determining whether a radio communication anomaly occurs between a specific mobile station from among the at least one arbitrary mobile station and the base station by using the received CQI information; and when determining that the radio communication anomaly occurs with the specific mobile station, controlling to interrupt the radio communication via the predetermined cellular channel and perform radio communication via the specific mobile station and either a shared channel or an open channel.

Base station and mobile station for processing wireless communication with each other, and method for controlling the same

An interference determination apparatus, including a signal receiver to receive a first signal of a primary network and a second signal of a secondary network; a correlator to compute a correlation value of a first cyclic prefix included in the first signal and a correlation value of a second cyclic prefix included in the second signal; and an interference determination unit to determine an interference level or whether the interference occurs between the primary network and the secondary network, using the correlation value of the first cyclic prefix and the correlation value of the second cyclic prefix.

Apparatus for determining interference using cyclic prefix and method thereof

A cognitive radio communication apparatus and method to control a sensing operation. The cognitive radio communication apparatus includes an information receiver to receive channel state information associated with a channel occupancy state of a primary system from at least one sensing node of a secondary system; a sensing control unit to control a sensing period of the at least one sensing node according to a change pattern of the channel occupancy state, based on the channel state information; and a control information transmitter to transmit control information associated with the controlled sensing period to at least one member node of the secondary system.

Cognitive radio communication method for controlling sensing operation and cognitive radio communication apparatus enabling the method

A cognitive radio communication apparatus and method which adaptably controls a sensing reference level based on a transmission power of a transmitter is provided. A cognitive radio communication apparatus includes a sensing reference level control unit to adaptably control a sensing reference level based on a transmission power of a secondary transmitter included in a secondary network, and a fast sensing unit to determine whether a signal received for a predetermined time period exists based on the controlled sensing reference level.

Growing community of inventors

Hwaseong-si, South Korea

Tae In Hyon