Electronics and Telecommunications Research Institute

Samsung Electronics Co., Ltd.

Sung-Hee Kim

Cheol-Hye Cho

Jung-Hwan Choi

Sang-Ho Lee

Young-Jin Kim

Young-Il Kim

Young-Soo Park

Yeon-Joon Chung

Yong-Su Lee

Dae-Geun Park

Sun-Sim Chun

Won Geun Ryu

Tae-Soo Kim

Young-jin Kim

Kang-Tae Kim

Jung-hwan Choi

Jong-Wook Park

Young-Jick Bahg

Dae-wook Park

Eun-Hee Hyun

Ji-Soo Park

Jae-Ho Kim

Kwang-Ryul Jung

Jeoung-Lak Ha

Yeong-jin Kim

Heon-Ju Jeong

Moo-Ho Cho

Hak-Seong Jeon

Young-Tack Park

Eu-Gene Choi

Yu-Seong Jeon

Hyo-Dae 202-1704 Woncheon Jugong Apt Kim

Jae-Kwon 517-1403 Sinnamusil 5-Danji Apt Kim

Dae-Wook Park

Yong-Jun 201-1203 Hyundai Home Town Kim

Young-Mi 201-404 Hyundai 6-Cha I-Park Kang

A display device with a touch screen, which executes at least one application and a method for controlling the display device are provided. The method includes receiving an application execution command to execute at least one application, determining at least one of a size and a position of a window that executes the at least one application according to a position at which the application execution command is input, and displaying the window according to the at least one of the size and position of the window.

Display device and method of indicating an active region in a multi-window display

A technology is provided capable of improving the efficiency of an OFDM system by obtaining the performance in Bit Error Rate (BER) in a wireless communication using OFDM and determining the minimum FFT input bit that produces a SNR difference of 0.1 dB or below with respect to a theoretical BER graph at a desired performance.

Receiving apparatus and method for providing input bits of fast fourier transformer according to modulation

An apparatus and method for managing variable MBS zones in an MBS server are provided. The method variably sets an MBS zone based on a characteristic where user movement between MBS zones and content preference are changed depending on time and environment, and thereby enables a safer and faster shift of an MBS zone, thus effectively providing high-quality multimedia service in a mobile environment.

Apparatus and method for managing variable multicast and broadcast service zones in MBS server

A technology of setting up a MBS zone for providing a mobile IPTV service is provided in which the MBS zone is effectively managed, so that QoS is prevented from being degraded due to the handover delay that is caused by a MBS handover occurring when a user moves between MBS zones.

Method of setting up dynamic multicast and broadcast service zone for providing mobile internet protocol television service

A system and method for reassembling packets in a packet relay node are provided. A packet relay node located between a transmitting node (i.e., a source node) and a receiving node (i.e., a destination node) inspects received packets to see if they are fragmented packets and reassembles a series of packets decided to be fragmented packets into an original packet, thereby reducing overhead and radio resource waste caused by duplicate transmission of IP headers having the same fragmented-packet information.

System and method for reassembling packets in relay node

The present invention relates to a collaboration system and method among heterogeneous nomadic/mobile communication networks using a grid service. By using a system in which GSI (Grid Service Infrastructure) is overlaid on heterogeneous nomadic/mobile communication networks, access to resources that are accessible with different interfaces can be made with a single standard interface. Further, a vertical hand-off among heterogeneous networks and access to location information can be easily performed. In addition, mutual operationality among networks can be improved and an efficient collaboration environment can be constructed.

Collaboration system and method among heterogeneous nomadic and mobile communication networks using grid services

Disclosed is an apparatus using a battery and a passive device, and a communication method thereof. In the wireless communication system, a coordinator has an active communication device for supporting active communication, and a passive device for supporting passive communication to wirelessly transmit power to a communication device. The communication device includes a memory and a passive communication device using the power received from the coordinator in a wireless manner in the active communication device operated with the battery, and stays in a passive communication idle state during a period allowing passive communication. The operation of the passive communication device is transmitted to the active communication device via an interrupt device so as to cause an active/passive communication state transition depending on the communication state.

Apparatus supporting active and passive telecommunication, and control method thereof

The coordinator broadcasts a candidate inquiry request command while having a list of candidate coordinators performing a coordinator role. The candidate coordinators receive the candidate inquiry request command, one of the candidate coordinators broadcasts a candidate notifying command, and other candidate coordinators check whether the candidate notifying command has been received. Devices check whether the candidate notifying command has been received from the candidate coordinator, and broadcast a candidate inquiry information command including the candidate notifying command receipt information. The candidate coordinator checks whether the candidate inquiry information command has been received, and broadcasts a candidate inquiry response command including number of accessible devices and the candidate notifying command receipt information. The coordinator receives the candidate inquiry response command and estimates communication performance ranks for the respective candidate coordinators.

Wireless personal area network, coordinator thereof, and coordinator selection method for hand-over thereof

Disclosed is a method for controlling unidirectional link connection in a mobile ad hoc network which comprises: mobile nodes including transmission power information in a beacon message that is periodically transmitted; using the information to sense a unidirectional link and maintain residual power information with regard to the corresponding node, and providing unidirectional link connectivity in the link layer to an upper layer through a filtering process using broadcasting and residual power information. Hence, the unidirectional links generated in the mobile ad hoc network may be accurately sensed using transmission power loss on a transmission path, and the frames generated in the link layer in the reverse direction of the unidirectional links may be transmitted.

Method for controlling unidirectional link connection in mobile ad hoc networks and recording medium storing program thereof

The present invention provides a method which uses a data audit function in order to maintain a consistency about a plurality of data stored as a replication data among data base nodes consisting of a mobile communication system. The method for auditing data based on timestamp criteria in replicated data bases in a digital mobile telecommunication system includes the steps of: (a) when there is a database access request, setting a time stamp about tuple accessed by the request, and managing a start, suspend, stop and resume events for a audit process; (b) managing a current status of the audit process, and information necessary for scanning each tuple; and (c) managing a request queue for the data base and CPU load. Accordingly, the present invention satisfies a system basic requirement being a real-time access in a mobile communication system including at least two data bases, maintains a consistency between two data replicated to each other, accurately controls a relationship between a mobile subscriber and a mobile terminal, and removes the incorrect data and the garbage data which may occur in a system operation, thereby effectively using the data base resource.

Data audits based on timestamp criteria in replicated data bases within

In the present invention, an expert system is coupled to the fault management function of a switching system for diagnosing various faults which occur in an electronic switching system and an interface module is coupled to the expert system, so that a user can diagnose a fault of the switching system and monitor a result of the fault. The expert system of the present invention has a knowledge base including information relating to faults of the switching system and when a fault occurs in the switching system, the expert system outputs information of the fault occurrence to a multimedia screen so that a user can recognize a fault immediately and diagnose the fault of the switching system.

Method for diagnosing a fault of digital exchanger

A data access method for subscriber location information in storing and controlling subscriber location information in a digital mobile communication network is disclosed. The data access method provides a search procedure, an addition procedure and a deletion procedure for the subscriber location information using a database of a main memory and a hardware of a sub memory, thereby embodying a real time system based on the main memory database and being capable of satisfying a fast response characteristic and high data process amounts demanding for the subscriber location information control.

Data access method for subscriber location information

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Daejeon-si, South Korea

Sung-Hee Kim