Patent application number | Description | Published |
20090213832 | TRANSMISSION RECEPTION APPARATUS OF DATA USING POLARIZATION TRANSMISSION IN LOS RADIO COMMUNICATION SYSTEM - Provided is a method and apparatus for transmitting and receiving data using a polarization transmission in a line-of-sight (LOS) radio communication system. An for transmitting data using a polarization transmission in a LOS radio communication system may include: an antenna unit including at least two antennas to transmit or receive via a different polarization path; a polarization data setting unit to set the different polarization path for each of the at least two antennas; and a resource allocation unit to set a transmission scheme according to a data characteristic and a service type, and to allocate a resource to be transmitted via the different polarization path according to the transmission scheme. | 08-27-2009 |
20090238286 | METHOD AND APPARATUS FOR UNEQUAL ERROR PROTECTION IN TRANSMITTING UNCOMPRESSED VIDEO WITH VARIOUS TYPE OVER WIDEBAND HIGH FREQUENCY WIRELESS SYSTEM - Disclosed are an Unequal Error Protection (UEP) apparatus and method thereof for transmitting various types of uncompressed video signals in a broadband high frequency wireless system. The UEP apparatus may include a UEP transmission controller to verify a bit separation point of separating a color depth and priority for each pixel element being composed of a video data pixel when video data is inputted, and to control an error correction coding of correcting relatively many errors to be used in information with a high priority for each pixel element, a bit separator to separate the video data pixel through a control of the UEP transmission controller based on the priority for each pixel element, and a channel coding unit to use a corresponding error correction coding through the control of the UEP transmission controller based on the priority for each pixel element. | 09-24-2009 |
20090238296 | MULTIPLE ACCESS SYSTEM AND METHOD FOR 60 GHZ WIRELESS COMMUNICATIONS SYSTEM - A control apparatus for use in wireless communications includes an antenna unit having antennas, the number of the antennas being equal to a maximum allowable number of connections in a specific frequency band; and a controller for receiving a connection request signal from each terminal attempting to connect to the control apparatus via the antenna unit, and transmitting and receiving a data signal to and from each terminal connected to the control apparatus by using a multiple-input-multiple-output scheme. The controller transmit and receive the data signal to and from each terminal connected to the control apparatus by obtaining a signal value of each antenna based on a predicted channel matrix and the number and types of terminals connected to the control apparatus via the antenna and separating the data signal for each terminal from the signal value according to the multiple-input-multiple-output scheme. | 09-24-2009 |
20090241007 | METHOD AND APPARATUS FOR UNEQUAL ERROR PROTECTION OF VIDEO SIGNAL OVER WIDEBAND HIGH FREQUENCY WIRELESS SYSTEM - Disclosed are an Unequal Error Protection (UEP) method and apparatus of video signals based on a dynamic link in a broadband high frequency wireless system. | 09-24-2009 |
20090285149 | DATA TRANSCEIVING APPARATUS AND METHOD IN CENTRALIZED MAC-BASED WIRELESS COMMUNICATION SYSTEM - A data transceiving apparatus and method in a centralized MAC-based wireless communication system are provided. The data transceiving method of a centralized MAC-based device may include: setting a direct path to a device and a relay path to a piconet coordinator (PNC); selecting any one of the direct path and the relay path; and transceiving data via the selected path. | 11-19-2009 |
20090286486 | TRANSMIT CHANNEL IN WIDEBAND HIGH FREQUENCY WIRELESS SYSTEM USING MULTIPLE TRANSMIT ANTENNA, AND METHOD THEREOF - Disclosed are a transmitting device and receiving device for selecting a transmit channel in a wideband high frequency wireless system using a plurality of transmit antennas, and a method thereof. According to the method of selecting a transmit channel, data is transmitted to the receiving device via a predetermined first antenna, and a first channel probing response message including first channel status information of the first antenna is received, in response to the transmission of the data. A channel probing request message that request channel status information of a second antenna, is transmitted to the receiving device via the second antenna, and a second channel probing response message including the second channel status information of the second antenna is received in response to the channel probing request message. | 11-19-2009 |
20090290528 | APPARATUS AND METHOD FOR TRANSMITTING AND RECEIVING DATA USING MULTI-PATH IN WIRELESS COMMUNICATION SYSTEM OF DISTRIBUTED MAC - Provided is an apparatus and method for transmitting and receiving data using multiple paths in a wireless communication system using a distributed Media Access Control (MAC). More particularly, provided is an apparatus and method for transmitting and receiving data that may select a path with a better channel status from multiple paths that include a direct path using a Line of Sight (LOS) and a relay path passing through a relay apparatus, in a wireless communication system that may transmit data via the LOS using a distributed MAC and a directional antenna. | 11-26-2009 |
20090303871 | METHOD AND APPARATUS FOR PACKET AGGREGATION ACCORDING TO TRAFFIC CHARACTERISTICS - A method and apparatus for packet aggregation is provided. The apparatus for packet aggregation may include an upper layer management unit to generate a plurality of Media Access Control (MAC) Service Data Units (MSDUs) and traffic characteristic information of each of the plurality of MSDUs; a MAC layer management unit to determine a sequence number of each of the plurality of MSDUs based on the traffic characteristic information of each of the plurality of MSDUs, and to generate an aggregated MAC Protocol Data Unit (MPDU) based on the sequence number of each of the plurality of MSDUs; and a physical (PHY) layer management unit to transmit the aggregated MPDU to a destination. | 12-10-2009 |
20100008221 | METHOD AND APPARATUS FOR SETTING DETOUR PATH IN WIDEBAND HIGH FREQUENCY WIRELESS SYSTEM USING CENTRALIZED MAC PROTOCOL - Provided is a method and apparatus for setting a detour path in a wideband high frequency wireless system using a centralized Media Access Control (MAC) protocol. Here, in a wireless system using the centralized MAC protocol where a time synchronization and a band allocation may be performed by a single central control unit, when a signal blockage occurs while a data communication is being performed via a direct path between a source device and a destination device, the detour path may be quickly provided. | 01-14-2010 |
20100008247 | APPARATUS AND METHOD FOR TRANSCEIVING DATA USING RELAY DEVICE IN WIRELESS COMMUNICATION SYSTEM OF CENTRALIZED MAC - Provided is an apparatus and method for transmitting and a receiving data using a relay device in a centralized Media Access Control (MAC). The apparatus may include: a channel decision unit to determine a channel status with respect to a communication path using a corresponding device and a communication path using a relay device; a path selection unit to select at least one communication path between the communication path using the corresponding device and the communication path using the relay device, based on the channel status; and a transceiver to transmit and receive the data via the selected at least one communication path. | 01-14-2010 |
20100034539 | APPARATUS FOR SYNCHRONIZING CLOCK IN REAL-TIME LOCATING SYSTEM AND METHOD THEREFOR - A highly precise clock synchronization apparatus in a real-time locating system (RTLS), includes an optical transmitting/receiving unit for receiving a clock information frame from a clock synchronization server, converting the received clock information frame in series-parallel, and transmitting/receiving the clock information data and the clock information; an offset estimation unit for detecting a preamble signal and a clock information signal from the series-parallel converted clock information frame, calculating a phase difference value by comparing the detected preamble signal with the detected clock information signal, and outputting an offset value based on the calculated phase difference value; and a clock synchronization unit for updating a local clock value to a time of the clock synchronization server based on the offset value and the clock information frame. | 02-11-2010 |
20100061400 | FRAME GENERATION APPARATUS AND METHOD OF PROTECTING PROTOCOL HEADER INFORMATION OVER WIDEBAND HIGH FREQUENCY WIRELESS SYSTEM - Provided are a frame generation apparatus and method that may protect variable length header information in a wideband high frequency wireless system. The frame generation apparatus may report variable length header information of a frame, and thereby the variable length header information may be verified in a receiving device. Also, the frame generation apparatus may convert a variable length header into a fixed length header by adding padding information to the variable length header of a frame, thereby protecting variable length header information. | 03-11-2010 |
20100062732 | RECEIVING-TRANSMISSION APPARATUS AND METHOD OF SWITCHING TRANSMISSION ANTENNA IN TRANSMISSION SWITCHED DIVERSITY SYSTEM - Provided are a transmission/receiving apparatus and method of switching a transmission antenna in a Transmission Switched Diversity (TSD) system. The transmission apparatus includes an announcement command frame reading unit to verify a TSD Information Element (IE) included in an announcement command frame when receiving the announcement command frame from a receiving apparatus, and to verify whether to request a switching of the transmission antenna, an antenna switching unit to select an antenna, not being selected from a plurality of antennas, as a transmission antenna when the announcement command frame requests the switching of the transmission antenna, and to switch a currently used antenna into the selected transmission antenna, and an announcement command frame generation unit to convert transmission antenna information included in the TSD IE into the selected transmission antenna, and to generate a response announcement command frame including the converted TSD IE and transmit to the receiving apparatus. | 03-11-2010 |
20100118986 | ACKNOWLEDGEMENT METHOD AND APPARATUS OF AGGREGATED FRAME IN WIDEBAND HIGH FREQUENCY WIRELESS SYSTEM - Provided are an acknowledgement (ACK) method and apparatus of an aggregated frame in a wideband high frequency wireless system. The ACK method of a destination apparatus in the wideband high frequency wireless system includes reading subframes included in an aggregated frame during a predetermined period of time when receiving the aggregated frame, and generating an ACK frame including information about a reading result of the aggregated frame during the predetermined period of time. | 05-13-2010 |
20100157877 | METHOD AND APPARATUS FOR ALLOCATING SEQUENCE TO SYNCHRONIZATION CHANNEL FOR NODE IDENTIFICATION IN WIRELESS COMMUNICATION SYSTEM - Provided is an apparatus for allocating a sequence to a synchronization channel for a node identification (ID), the apparatus including: a base node sequence generator to generate a base sequence that is a sequence for a node ID of a base node; a relay node sequence generator to generate a relay sequence that is a sequence for a node ID of a relay node by transforming the base sequence; a baseband signal generator to generate a baseband signal by mapping the base sequence or the relay sequence to a frequency domain and a time domain; and a transmitter to transmit the baseband signal. | 06-24-2010 |
20100182503 | APPARATUS FOR TRANSCEIVING POINT TO POINT MOVING SIGNAL RECEPTION HIGH CHANNEL USING HOTRIZONTAL BLANKING INTERVAL AND METHOD FOR EXCUTING THE APPARATUS - Provided are a method and apparatus for transceiving an asymmetric point-to-point moving signal and securing an uplink channel using a horizontal blanking interval (HBI) in which a video signal transceiving apparatus can combine a plurality of HBIs and a plurality of active lines (ALs) into a single section, and when auxiliary data exists in a corresponding HBI, can change an order of the HBI to the last and transmit map information including arrangement information to a video signal display apparatus, and the video signal display apparatus can receive the map information and analyze the received map information to thereby acquire an uplink channel using HBI excluding auxiliary data and transmit control signal data via the acquired uplink channel. | 07-22-2010 |
20100183078 | APPARATUS AND METHOD FOR KEEPING BIT RATE OF IMAGE DATA - An apparatus for uniformly maintaining a bit rate of image data includes an image encoding apparatus including: a bit shifter configured to shift a predetermined number of bits included in line pixel data of a single line; an encoder configured to compress the bit shifted line pixel data and output a compressed bitstream; and a data frame formatter configured to generate a data frame including a bit shift field, the bit shift field containing information associated with the shifted bit of the pixel data, and an image decoding apparatus including: a data frame deformatter configured to receive a data frame and extract a field value from the data frame; a decoder configured to decode a compressed bitstream from the data frame, and recover line pixel data; a bit shifter configured to shift a predetermined number of bits; and a bit recovery unit configured to recover a lost bit. | 07-22-2010 |
20100195646 | APPARATUS AND METHOD FOR TRANSMIT/RECEIVE OF IMAGE DATA - Disclosed are an apparatus and method for transmitting/receiving image data. The method for transmitting image data includes classifying each pixel of image data into upper bits and lower bits, enabling the classified upper bits to be included in a payload of a Most Significant Bit (MSB) packet, and also enabling the classified lower bits to be included in a payload of a Least Significant Bit (LSB) packet, generating a header of the MSB packet and a header of the LSB packet, combining the payload and the header to respectively generate the MSB packet and the LSB packet, and transmitting the generated MSB packet and the LSB packet. | 08-05-2010 |
20100208832 | FRAME STRUCTURE FOR FAST WIRELESS COMMUNICATION SYSTEM AND APPARATUS FOR FAST WIRELESS COMMUNICATION USING THE FRAME - A method of configuring a frame for fast wireless communication and an apparatus for fast wireless communication are provided. The apparatus for fast wireless communication includes: a frame configuration unit configuring a frame including transmission data; a demultiplexing unit demultiplexing the transmission data included in the frame into N number of parallel streams (N: positive number greater than 2); N number of coding and modulation units connected in parallel to perform error correction coding and orthogonal frequency division multiplexing (OFDM) with respect to each of the N number of parallel streams; and a multiplexing unit multiplexing outputs of the N number of coding and modulation units into serial streams. | 08-19-2010 |
20100223526 | METHOD AND APPARATUS FOR CHANNEL CODING AND MODULATION FOR UNEQUAL ERROR PROTECTION IN TRANSMITTING UNCOMPRESSED VIDEO OVER WIDEBAND HIGH FREQUENCY WIRELESS SYSTEM - An Unequal Error Protection (UEP) transmission apparatus comprises a bit separator unit configured to, when video data are received, separate pixels of the video data into Most Significant Bits (MSBs) and Least Significant Bits (LSBs) according to a degree of importance on a pixel-component basis; a header generation unit configured to create an MSB sub-frame and a LSB sub-frame based on the respective MSBs and LSBs and create an MSB Medium Access Control (MAC) sub-frame and a LSB MAC sub-frame to which respective headers are added; and a channel coding unit configured to create a channel-encoded MSB data and a channel-encoded LSB data by performing error correction encodings corresponding to the respective MSB MAC sub-frame and LSB MAC sub-frame and add padding bits, corresponding to the respective channel-encoded MSB data and channel-encoded LSB data, to the channel-encoded MSB data and channel-encoded LSB data. | 09-02-2010 |
20100233967 | METHOD FOR APPLYING AMPLITUTE USE TO DIGITAL AMPLYFIER WITH VARIABLE BIT RESOLUTION OR CLOCK FREQUENCY AND APPARATUS FOR EXECUTING THE METHOD - Disclosed is an adaptive modulation scheme and apparatus thereof using an Analog/Digital (AJO) converter with variable bit resolution or clock frequency, the A/D converter including a transmitter including a modulator to modulate data to be transmitted according to a modulation scheme received from a receiver, an A/D converter to convert the modulated data into an analog signal using a bit resolution or a clock frequency received from the receiver, and a radio frequency (RF) processor to transmit the analog signal to the receiver through a wireless channel and a receiver including an RF processor to receive data through a wireless channel, a calculator to calculate a Signal to Noise Ratio (SNR) of the data received through the RF processor, and a modulation controller to search a predetermined setting table for a corresponding modulation scheme and bit resolution using the calculated SNR and to transmit to a transmitter. | 09-16-2010 |
20100260042 | APPARATUS AND METHOD FOR TRANSMITTING AND RECEIVING DATA IN WIRELESS COMMUNICATION SYSTEM - Disclosed are a data transceiver and a method thereof in a wireless communication system, and particularly, is a data transceiver and method thereof using multiple routes in the wireless communication system. The data transmitting/receiving method using the multiple routes in the wireless communication system includes setting a direct route to a corresponding station and a relay route to a relay device, selecting one route from among the direct route and relay route, and transmitting/receiving data through the selected route. | 10-14-2010 |
20100265888 | APPARATUS AND METHOD FOR SUPER FINE POSITIONING WITH NETWORKS IN TIERED STRUCTURE - A super fine positioning apparatus is provided. A super fine positioning apparatus, including: a network module unit comprising a plurality of network modules which processes a signal among a user terminal and a plurality of communication networks, the plurality of communication networks being sorted by a positioning precision; a network module control unit which sequentially selects the plurality of network modules and controls connection to the plurality of network modules; a positioning calculation unit which sequentially connects to the plurality of network modules and calculates a location of the user terminal according to each connection phase; and a database which stores information about the user terminal and provides the network module control unit and positioning calculation unit with the information. | 10-21-2010 |
20100294879 | WING ASSEMBLY AND APPARATUS FOR LAUNCHING FLYING OBJECT USING THE SAME - Disclosed are a wing assembly including a wing movably accommodated in a launch tube, and a buffer unit detachably mounted to the wing to come in contact with the launch tube and configured to be separated from the wing after the wing comes out of an inner space of the launch tube, and an apparatus for launching a flying object having the same. | 11-25-2010 |
20100296599 | MULTI-ANTENNA COMMUNICATION METHOD AND SYSTEM THEREOF - A multiple antenna communication method and a multiple antenna communication system are provided. The multiple antenna communication method includes: determining a weighting vector with respect to a plurality of transmit antennas, using a spread spectrum code; determining a target transmission rate of each of the transmit antennas using the determined weighting vector; transmitting information associated with the target transmission rate to a multiple antenna reception apparatus; receiving, from the multiple antenna reception apparatus, channel information including information regarding whether to accept the transmitted target transmission rate information; and transmitting data to the multiple antenna reception apparatus using the received channel information. | 11-25-2010 |
20100309838 | TRANSMITTER, RECEIVER AND METHOD FOR EXTENDING COVERAGE IN WLAN - A transmitter, a receiver, and a method for extending a coverage in a local area wireless communication network are provided. A group forming unit may form a transmission group together with peripheral devices that enable a local area communication. A distributing unit may distribute, to the peripheral devices, data to be transmitted to a target receiver. A communication unit may transmit the distributed data to the peripheral devices through a frequency band used for the local area communication, and may transmit the distributed data to a reception group, to which the target receiver belongs, using a cooperative Multiple-Input Multiple-Output (MIMO) scheme with the peripheral devices. | 12-09-2010 |
20100314490 | APPARATUS FOR DEPLOYING WING AND APPARATUS FOR LAUNCHING FLIGHT HAVING THE SAME - Disclosed are a wing deployment apparatus and an apparatus for launching a flying object having the same, the wing deployment apparatus including wings configured to be in a folded state and a deployed state, a driving unit connected to the wings, and configured to drive the wings to be switched from the folded state to the deployed state or vice versa, and a damper cooperative with the operation of the driving unit, and configured to damp a driving force of the driving unit from the start of the wings being moved to the completion of the movement of the wings. | 12-16-2010 |
20100316013 | SCHEDULING METHOD AND APPARATUS FOR SPATIAL REUSE - A scheduling method of giving a chance for transmission to a plurality of terminals in the same time period, and a device therefor are provided. The scheduling method includes: transmitting first scheduling information to terminals in a network, the first scheduling information defining transmitting/receiving terminals and a transmission time period; receiving channel measurement information including inter-terminal interference information from the terminals in the network; and generating second scheduling information defining transmission time periods and a plurality of transmitting/receiving terminals that do not interfere with each other by using the channel measurement information. | 12-16-2010 |
20100325301 | APPARATUS AND METHOD FOR TRANSMITTING AND RECEIVING STREAMING DATA USING MULTIPLE PATH - The present invention relates to an apparatus and method for transmitting/receiving streaming data using multiple paths, in which the streaming data is smoothly reproduced without being interrupted, and more particularly, to an apparatus and method for transmitting/receiving streaming data using multiple paths, in which exchange of the streaming data is performed in real-time using the multiple paths regardless of obstacles. The method for transmitting streaming data using multiple paths includes managing and maintaining a path list including sequence information about a transmission path capable of transmitting data, framing the streaming data, and transmitting the framed streaming data via the transmission path according to the sequence information. | 12-23-2010 |
20110028106 | SYSTEM AND METHOD FOR MODULATING DATA ADAPTIVELY USING SELECTION OF MULTI ANTENNA - An adaptive modulation apparatus and method using a multiple antenna selection scheme are provided. The adaptive modulation method using the multiple antenna scheme includes: selecting one transmit antenna from a plurality of transmit antennas; determining a target transmission rate of the selected transmit antenna to transmit the determined target transmission rate to a multiple antenna reception apparatus; receiving, from the multiple antenna reception apparatus, feedback information including information regarding whether to accept the target transmission rate; and transmitting data to the multiple antenna reception apparatus using the received feedback information. | 02-03-2011 |
20110032953 | TIME DIVISION MULTIPLEXING COMMUNICATION SYSTEM WITH PARALLEL STRUCTURE AND METHOD FOR THE SAME - Disclosed are a Time Division Multiplexing (TDM) communication system with a parallel structure and a method for the same. A transmission apparatus of the TDM communication system with the parallel structure includes a Time Division Demultiplexer (TDDM) to perform time division demultiplexing of inputted first serial signals to thereby output the demultiplexed serial signals as a plurality of parallel signals, a plurality of modulators to respectively modulate the outputted parallel signals; a Time Division Multiplexer (TDM) to adjust a multiplexing ratio according to channel-related information, and to perform time division multiplexing of each of the modulated parallel signals in the adjusted multiplexing ratio to thereby output the multiplexed parallel signals as second serial signals, and a transmission antenna to transmit the outputted second serial signals. | 02-10-2011 |
20110044271 | TRANSMISSION/RECEPTION APPARATUS AND METHOD FOR FRAME INCLUDING PROTOCOL VERSION IN ULTRA WIDEBAND SYSTEM - Provided is a transmission/reception apparatus and method for transmitting a frame in an ultra wideband radio communication system, which may enable a protocol version to be included in a fixed-length physical layer protocol (PHY) header so that interaction between systems using different protocol versions may be realized, and may enable information about a modulation and coding scheme to be included in a variable-length PHY header to thereby overcome a decoding delay problem occurring due to a Reed Solomon code. | 02-24-2011 |
20110102294 | METHOD OF DISPOSING MULTIPLE ANTENNAS AND COMMUNICATION APPARATUS USING THE METHOD - Provided is an apparatus and method that may dispose multiple antennas positioned in each of terminals in such a way that respective arrangements of the multiple antennas of the terminals are parallel to each other even when the terminal is rotated, thereby increasing a channel capacity. A transmission apparatus using the multiple antennas may include a first antenna unit to be disposed parallel to an arrangement of multiple antennas of a receiver while facing the arrangement of the multiple antennas of the receiver, and a second antenna unit where a transmission antenna is additionally disposed so that an arrangement of multiple antennas of a transmitter is parallel to the arrangement of the multiple antennas of the receiver while facing the arrangement of the multiple antennas of the receiver, when the transmitter is rotated. | 05-05-2011 |
20110116393 | METHOD AND APPARATUS FOR SPATIAL REUSE BY ASSISTANCE OF DISTRIBUTED DEVICES OVER WIRELESS SYSTEM USING DIRECTIONAL ANTENNAS - Disclosed are a method for spatial reuse by support of distributed devices in a wireless communication system using a directional antenna, and an apparatus for the same. In the wireless communication system using the directional antenna, the method arranges an antenna with respect to a target device for communication before the distributed devices request a resource for communication, informs the target device or a central control unit in advance of a measurement result of a signal in MASs through the antenna, and requests a resource and receives a resource allocation based on the measurement result. | 05-19-2011 |
20110117945 | METHOD AND APPARATUS FOR ALLOCATING RESOURCE IN WIRELESS NETWORK USING DIRECTIONAL ANTENNA - A method and apparatus for allocating a resource in a wireless network using a directional antenna is provided. The method and apparatus for allocating a resource in a wireless network using a directional antenna may spatially reuse resources using the directional antenna, allocate resources to enable a maximum number of groups to be transmitted in a given time or to enable a group including a number of links to be transmitted first, and thereby may reduce communication delay and increase throughput. | 05-19-2011 |
20110129161 | HYBRID PREDICTION APPARATUS AND METHOD FOR ENTROPY ENCODING - Provided are a hybrid prediction apparatus and method for entropy encoding that may enhance an existing image compression scheme and prediction scheme by including and selectively using a plurality of predictors configured to perform a per-pixel prediction of an image frame, and may also supplement a performance of a prediction scheme, excessively occurring in a particular pixel. | 06-02-2011 |
20110129162 | APPARATUS AND METHOD FOR LOSSLESS/NEAR-LOSSLESS IMAGE COMPRESSION - Provided is a lossless/near-lossless image compression apparatus and method. The lossless/near-lossless image compression method may include calculating a predicted value by predicting a pixel of a current location based on adjacent pixels, calculating an error that is a difference between the predicted value and a pixel value, and modulating the error to output the modulated error, encoding the modulated error, and controlling a tolerance based on a slice unit to enable a number of encoded bits to be the same as a target number of encoded bits. The tolerance may be set to be gradually increased or to be decreased to prevent a rapid change in the tolerance. | 06-02-2011 |
20110142154 | SEQUENTIAL TRANSMISSION MULTI-BEAMFORMING METHOD WITH LOW COMPLEXITY USING HADAMARD MATRIX - Provided is a sequential transmission multi-beamforming apparatus and method with a low complexity based on a Hadamard matrix. A simple codebook may be generated based on the Hadamard matrix and thus, a number of weighted-vectors is reduced and a complexity of hardware is decreased. A diversity gain may be maximized based on a spatial diversity processing apparatus and a beamforming weighted vector may be systematically generated. | 06-16-2011 |
20110150040 | APPARATUS OF 60 GHZ BAND MODEM - An ultra wideband (UWB) communication modem includes an interface configured to transceive data in connection with a host device, a baseband processor configured to process, in a parallel manner, a baseband signal being transceived between the interface and a parallel/serial converter, the parallel/serial converter configured to combine a parallel signal into a serial signal and output the serial signal, and separate a serial signal into a parallel signal and output the parallel signal, a radio frequency (RF) processor configured to reduce a frequency of a received UWB signal and transmit the frequency-reduced signal to the parallel/serial converter, and increase a frequency of the serial signal received from the parallel/serial converter and transmit the frequency-increased signal to a directional antenna, and the directional antenna configured to transceive a wireless signal by forming a directional beam and control a direction of the directional beam. | 06-23-2011 |
20110170573 | METHOD AND APPARATUS FOR MANAGING DEVICE DISCOVERY IN WIRELESS SYSTEM - Provided is a method and apparatus for managing a device discovery in a wireless system. The device discovery management method may include: transmitting, by a discovery device, a discovery beacon that contains information associated with a discovery scanning duration; and receiving, from a neighboring device, a response message to the discovery beacon in the discovery scanning duration. | 07-14-2011 |
20110171990 | TERMINAL, METHOD, AND WIRELESS COMMUNICATION FOR POWER SAVING - Provided are a terminal for power saving, a power saving method of the terminal, and a wireless communication system for power saving. A receiving terminal may receive scheduling information associated with data transmission and reception of a transmitting terminal. The receiving terminal may directly communicate with the transmitting terminal by referring to the scheduling information. | 07-14-2011 |
20110179335 | METHOD AND APPARATUS FOR CONFIGURING PROTOCOL HEADER IN WIRELESS COMMUNICATION SYSTEM - Provided are a method of configuring a protocol header in a wireless communication system, and a communication apparatus and method using the protocol header configuration method. The protocol header configuration method may include: configuring a variable length physical layer (PHY) header and a fixed length PHY header; encoding the fixed length PHY header according to a first coding scheme; generating a Header Check Sequence (HCS) to check an error regarding a combination of the fixed length PHY header, the variable length PHY header, and a Media Access Control (MAC) header; scrambling the MAC header and an HCS to generate a scrambled MAC header and HCS; and encoding the variable length PHY header and the scrambled MAC header and HCS according to a second coding scheme. | 07-21-2011 |
20110199994 | SYSTEM AND METHOD OF ALLOCATING CHANNELS FOR MULTIPLE TRAFFIC STREAMS - Provided is a system and method that may allocate channels with respect to multiple traffic channels. A channel request apparatus may determine a correlation between traffic streams to which channels are allocated, and to determine whether the traffic streams are related to each other, may generate a channel allocation request message that simultaneously requests channel allocation with respect to related traffic streams that are related to each other, and may transmit the channel allocation request message to a channel response apparatus to request the channel allocation with respect to the related traffic channels. | 08-18-2011 |
20110200072 | METHOD AND APPARATUS FOR SELECTING A CHANNEL IN WIDEBAND HIGH FREQUENCY WIRELESS SYSTEM - Provided is a method and apparatus for selecting a channel in a wideband high frequency wireless system. The channel selection method may include: generating a channel scanning request frame that includes a channel bitmap, wherein the channel bitmap denotes information regarding a channel to be scanned by a neighboring device; transmitting the channel scanning request frame to the neighboring device; receiving a channel scanning response frame corresponding to the channel scanning request frame; and selecting a channel for a communication with the neighboring device, based on the channel scanning response frame. | 08-18-2011 |
20110206066 | METHOD AND APPARATUS FOR CONFIGURING PROTOCOL HEADER IN WIRELESS COMMUNICATION SYSTEM - Provided are a method of configuring a protocol header in a wireless communication system, and a communication apparatus and method using the protocol header configuration method. The protocol header may include a fixed length physical layer (PHY) header containing information associated with the number of Media Access Control (MAC) service data units, a variable length PHY header containing information associated with a segment constituting a payload, a MAC header containing information associated with the MAC service data units, and a Header Check Sequence (HCS) checking an error regarding a combination of the fixed length PHY header, the variable length PHY header, and the MAC header. | 08-25-2011 |
20120063410 | METHOD FOR SELECTING COMMUNICATION CHANNEL IN COMMUNICATION DEVICE OF WIDEBAND WIRELESS COMMUNICATION SYSTEM AND APPARATUS THEREOF - Provided is a method and apparatus for setting up a channel for communication between distributed devices in a wireless communication system. A method of selecting a communication channel in a communication device of a wireless communication system may include requesting scanning of channels between the communication device and a discovery device, receiving a channel scanning response message including a Distributed Reservation Protocol (DRP) Availability Information Element (IE) assigned for each scanned channel, and selecting a channel based on the DRP Availability IE. | 03-15-2012 |
20120082109 | METHOD AND APPARATUS FOR CONTENTION-BASED CHANNEL ACCESS WITH DIRECTIONAL ANTENNA OVER WIDEBAND HIGH FREQUENCY WIRELESS SYSTEM - Provided are a method of performing contention based channel access by classifying a contention period into a beamformable contention period in which a beamforming is allowed and a non-beamformable contention period in which the beamforming is interrupted so as to resolve an issue regarding channel access occurring due to an introduction of a directional antenna for handling a path loss in a wideband wireless communication system according to an embodiment of the present invention, and a method for maximizing a spatial reuse gain by managing, for each direction, information about a transmission time of a message received from a dispersion device. | 04-05-2012 |
20120082142 | METHOD OF ALLOCATING RADIO RESOURCE AND TRANSMITTING DATA - Provided is a data transmission method. The data transmission method may limit a use authorization for a contention time period so that a portion of data transmission devices among a plurality of data transmission devices may transmit data during the contention time period. | 04-05-2012 |
20120113975 | NETWORK EMPLOYING SPACE RECYCLING, AND A METHOD FOR MANAGING THE NETWORK - A method of operating a network coordinator for a spatial reuse scheme includes receiving a reservation request for a time period for a data communication of a target transmitter/receiver pair that uses a directional antenna, searching for a time period reserved in advance for another transmitter/receiver pair, from a Channel Time Allocation Period (CTAP) that is a contention-free access period for the data communication, and reserving a time period for the target transmitter/receiver pair in the CTAP, so that the time period reserved for the target transmitter/receiver pair overlaps the time period reserved in advance for the other transmitter/receiver pair. | 05-10-2012 |
20120163217 | Structure of Adaptive Multiple Antennas and Communication Device and Method Using Adaptive Multiple Antennae - The present invention relates to communication using multiple antennas, and more particularly, to an apparatus and method for adaptively adjusting, based on a channel environment, an interval and direction of multiple antennas each of a transmitter and a receiver. A communication method according to the present invention may include verifying information about a channel state based on a pilot signal transmitted for each antenna of a transmitter, adjusting intervals among antennas of a receiver based on the information about a channel state, calculating transmission capacity values according to the adjusted intervals among antennas, and setting an antenna to an antenna interval corresponding to a transmission capacity having a highest value among the transmission capacity values calculated. | 06-28-2012 |
20120163218 | APPARATUS AND METHOD FOR MULTIPLE ACCESSES BASED ON RESOURCE CONTENTION USING DIRECTIONAL ANTENNA - Provided is an apparatus and method for spatial reuse of resources using a directional antenna based on a resource contention in a wireless network. An apparatus for multiple accesses based on a resource contention using a directional antenna may use a resource contention period efficiently in a medium access control (MAC) by calculating an optimal value of an objective function for a delay time and a throughput. | 06-28-2012 |
20120169374 | APPARATUS AND METHOD FOR OBTAINING MAXIMUM VALUE AND MINIMUM VALUE IN PLURALITY OF DIGITAL INPUT SIGNALS - The present invention relates to a digital signal processing circuit, and more particularly, to a method and apparatus for generating a maximum value or a minimum value used for designing the digital signal processing circuit. An apparatus for obtaining a maximum value or a minimum value from N digital input signals may include N×W bit processing elements to receive an input of W bits of each of the N digital input signals, W OR operators to receive an input of N operation values output from bit processing elements, and to perform an OR operation, respectively, and W inverters to invert an output value for each of the W OR operators. | 07-05-2012 |
20120170619 | METHOD FOR SENDING AND RECEIVING DATA ON A COOPERATIVE COMMUNICATIONS SYSTEM AND A COOPERATIVE COMMUNICATIONS METHOD - A data transmission method of a source node in a cooperative communication system includes: performing a beamforming to a relay node; transmitting data to the relay node; performing a beamforming to a destination node; and transmitting data to the destination node. | 07-05-2012 |
20120207080 | SYNCHRONIZATION CONTROL METHOD FOR DATA TRANSMISSION/RECEPTION, AND STATION FOR DATA TRANSMISSION/RECEPTION SYNCHRONIZATION - Disclosed is a technique related to a method for controlling synchronization by correcting data transmission time or frequency offset, and to a station. According to the technique, a method for controlling the synchronization of a first terminal for data transmission/reception in a coordinated communication system comprises: a step of transmitting a first request frame and a second request frame containing transmission time information for each of a first response frame and a second response frame to a second terminal and to a third terminal, respectively; a step of receiving the first response frame and the second response frame from the second terminal and the third terminal; a step of estimating a first propagation delay time between the first terminal and the second terminal and a second propagation delay time between the first terminal and the third terminal, using the time of receiving the first response frame and the second response frame; and a step of transmitting, to the second terminal, a third request frame containing information on the delay time difference between the first propagation delay time and the second propagation delay time. | 08-16-2012 |
20120207146 | METHOD AND APPARATUS FOR ADJUSTING SIGNAL TRANSMISSION STARTING POINT OF TERMINAL IN WIRELESS NETWORK - Disclosed is a method for adjusting a transmission time point of at least one second terminal in a wireless network by a first terminal. In the method for adjusting a transmission time point of a terminal, a transmission time point of the second terminal is set, a first frame including information regarding the transmission time point is transmitted to the second terminal, a first response frame transmitted according to the transmission time point from the second terminal is received, and the transmission time point is adjusted according to an arrival time of the first response frame. | 08-16-2012 |
20120230247 | METHOD AND APPARATUS FOR SETTING UP A RELAY LINK IN A WIRELESS COMMUNICATION SYSTEM - A method and apparatus for setting up a relay link to transfer a data frame using a relay in a wireless communication system are provided. The relay link setup method of a source STA in a wireless communication system may include receiving capability information of at least one relay supporting station included in the wireless communication system from an access point (AP) or a personal basic service set (PBSS) central point (PCP), selecting one of the at least one relay supporting station as a relay station, using beam forming information among the source station, a destination station, and the at least one relay supporting station and the capability information, transferring a relay link setup request frame to the destination station, and receiving a relay link setup response frame that includes information on a relay link setup result from the destination station. The relay link setup request frame and the relay link setup response frame may pass through the relay station. | 09-13-2012 |
20120280840 | MULTIPLE-MODE BROADBAND WIRELESS COMMUNICATION DEVICE AND METHOD - Provided is a multi-mode ultra broadband wireless communication apparatus and method, and a multi-mode ultra broadband transmitting apparatus may include a baseband outputting unit to parallelly output multiple digital signals, a mid-frequency processing unit to up-convert the outputted parallel digital signals to mid-frequencies, and the up-conversion is performed in a range where the outputted parallel digital signals do not cause interference with each other, a parallel-to-serial converter to convert, to a serial digital signal, the converted parallel digital signals that are up-converted to the mid-frequencies, a digital-to-analog converter to convert the serial digital signal to an analog signal, and a radio frequency processing unit to up-convert the analog signal to multiple transmission frequencies respectively corresponding to desired communication services. | 11-08-2012 |
20120307673 | APPARATUS AND METHOD FOR BROADBAND WIRELESS LOCAL AREA COMMUNICATION - Provided is an apparatus and method for wideband short-range wireless communication using a directional antenna in a millimeter wave band, and the method for wideband short-range wireless communication according to an embodiment may determine a first time interval and a second time interval for a cooperated data frame transfer based on a packet transmission time at each transmission from a source node to a destination node, transmit a frame to a relay node through an antenna pattern directed towards the relay node at a start point of the first time interval, and transmit the frame to the destination node through an antenna pattern directed towards the destination node to after a predetermined period of time from a start point of the second time interval. | 12-06-2012 |
20120314609 | WIRELESS COMMUNICATION METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING FRAME THROUGH RELAY - The present invention provides a wireless communication method used for transmitting and receiving a relay in a wireless local area network system. The wireless local area network system according to an embodiment of the present invention relates to a wireless communication method of setting a relay link through a relay and setting a transmission time point at which a data frame is transmitted in a source device by recognizing a propagation delay between devices, and the like when an operation mode of the set relay corresponds to a cooperating mode. | 12-13-2012 |
20120320763 | WIDEBAND NEAR FIELD COMMUNICATION APPARATUS AND METHOD - Provided is an apparatus and method for performing a wideband short-range wireless communication using a directional antenna in a millimeter wave band, and the method for wideband short-range wireless communication according to an embodiment may determine a change of a relay operation type based on a link quality between a source node and a relay node, a link quality between the relay node and the destination node, and a link quality between the source node and the destination node, transmit a relay operation change (ROC) request message in response to a determination of the change of the relay operation type, and receive an ROC response message corresponding to the ROC request message. | 12-20-2012 |
20120320864 | METHOD AND APPARATUS FOR ALLOCATING SEQUENCE TO SYNCHRONIZATION CHANNEL FOR NODE IDENTIFICATION IN WIRELESS COMMUNICATION SYSTEM - Provided is an apparatus for allocating a sequence to a synchronization channel for a node identification (ID), the apparatus including: a base node sequence generator to generate a base sequence that is a sequence for a node ID of a base node; a relay node sequence generator to generate a relay sequence that is a sequence for a node ID of a relay node by transforming the base sequence; a baseband signal generator to generate a baseband signal by mapping the base sequence or the relay sequence to a frequency domain and a time domain; and a transmitter to transmit the baseband signal. | 12-20-2012 |
20130003689 | METHOD AND APPARATUS FOR ALLOCATING RESERVATION RESOURCE FOR RELAY IN WIRELESS COMMUNICATION SYSTEM USING MEDIA ACCESS CONTROL BASED ON RESERVATION - Provided is a communication method of a coordinator in a wireless networks system that uses a reservation-based media access control (MAC). The communication method includes receiving, from a source device, a frame that requests a reservation resource for a relay device, to enable a frame that the source device transmits to a destination device to be relayed via the relay device, and allocating the reservation resource for the relay device, in response to the request. | 01-03-2013 |
20130034045 | COMMUNICATION METHOD FOR A COORDINATOR, A RELAY DEVICE, A SOURCE DEVICE AND A DESTINATION DEVICE INCLUDED IN A WIRELESS NETWORK - Provided is a communication method of a coordinator, the method including: receiving a relay search request frame for requesting a search for at least one relay station between a destination station and a source station; and transmitting, in response to the relay search request frame, a relay search response frame including a list of the at least one relay station so that the source station selects a target relay station from the at least one relay station. | 02-07-2013 |
20130039180 | APPARATUS AND METHOD FOR WIDEBAND SHORT-RANGE WIRELESS COMMUNICATION - Provided is an apparatus and method for performing wideband short range wireless communication in a millimeter wave band, and the method for wideband short range wireless communication may include checking information of a reception device by performing signaling with the reception device, receiving information about a state of a receive buffer from the reception device based on the information of the reception device, and transmitting data based on the information about a state of the receive buffer. | 02-14-2013 |
20130039201 | COMMUNICATION METHOD AMONG A SOURCE DEVICE, A DESTINATION DEVICE AND A RELAY DEVICE - A communication method of a source device according to an embodiment includes detecting a status of a first link directly connected from the source device to a destination device or a status of a second link connected from the source device to the destination device via a relay device, selecting any one of the first link and the second link based on a result of the detection, and transmitting data using the selected link. | 02-14-2013 |
20130113991 | APPARATUS FOR TRANSCEIVING POINT TO POINT MOVING SIGNAL RECEPTION HIGH CHANNEL USING HORIZONTAL BLANKING INTERVAL AND METHOD FOR EXECUTING THE APPARATUS - Provided are a method and apparatus for transceiving an asymmetric point-to-point moving signal and securing an uplink channel using a horizontal blanking interval (HBI) in which a video signal transceiving apparatus can combine a plurality of HBIs and a plurality of active lines (ALs) into a single section, and when auxiliary data exists in a corresponding HBI, can change an order of the HBI to the last and transmit map information including arrangement information to a video signal display apparatus, and the video signal display apparatus can receive the map information and analyze the received map information to thereby acquire an uplink channel using HBI excluding auxiliary data and transmit control signal data via the acquired uplink channel. | 05-09-2013 |
20130189570 | SECONDARY BATTERY OF NOVEL STRUCTURE - Disclosed herein is a plate-shaped secondary battery configured to have a structure in which an electrode assembly of a cathode/separator/anode structure is mounted in a battery case in a sealed state by thermal welding, wherein a protuberance is formed at an outer edge sealed portion of an electrode assembly receiving part of the battery case such that the protuberance protrudes upward and downward from the sealed portion, and the protuberance extends along the outer edge of the electrode assembly receiving part continuously in a curved line or in a straight line in a state in which the protuberance is adjacent to the electrode assembly receiving part. | 07-25-2013 |
20130223368 | METHOD FOR TRANSMITTING DATA USING VARIABLE CLOCK - A data transmission system that transmits data in a wireless environment such as a wireless communication network is provided. The data transmission system includes an access point (AP) and a terminal. The AP transmits control information to the terminal, and the terminal selects a data period to transmit the data based on the control information. The terminal may determine an operation clock, a channel bandwidth, and the like according to a data transmission rate of the data to be transmitted. The terminal may operate at a low operation clock according to the data transmission rate, thereby reducing power consumption. | 08-29-2013 |
20130308056 | METHOD AND APPARATUS FOR UNEQUAL ERROR PROTECTION IN TRANSMITTING UNCOMPRESSED VIDEO WITH VARIOUS TYPE OVER WIDEBAND HIGH FREQUENCY WIRELESS SYSTEM - Disclosed are an Unequal Error Protection (UEP) apparatus and method thereof for transmitting various types of uncompressed video signals in a broadband high frequency wireless system. The UEP apparatus may include a UEP transmission controller to verify a bit separation point of separating a color depth and priority for each pixel element being composed of a video data pixel when video data is inputted, and to control an error correction coding of correcting relatively many errors to be used in information with a high priority for each pixel element, a bit separator to separate the video data pixel through a control of the UEP transmission controller based on the priority for each pixel element, and a channel coding unit to use a corresponding error correction coding through the control of the UEP transmission controller based on the priority for each pixel element. | 11-21-2013 |
20140004410 | SECONDARY BATTERY OF NOVEL STRUCTURE | 01-02-2014 |
20140070967 | ELECTRONIC SIGNAL CONVERSION APPARATUS AND OPERATION METHOD OF THE ELECTRONIC SIGNAL CONVERSION APPARATUS - Provided is an electronic signal conversion apparatus and an operation method of the electronic signal conversion apparatus, including: a first converter to perform a compression and conversion of an input signal to a digital signal based on a first sampling; a second converter to perform a compression and conversion of the input signal to the digital signal based on a second sampling different from the first sampling; and a processor to restore the input signal using an output signal of the first converter and an output signal of the second converter. | 03-13-2014 |
20140070998 | DEVICE AND METHOD FOR RECOGNIZING LOCATION BY CONVERSION OF FREQUENCY OFFSET - Provided is an apparatus and method for recognizing a location by conversion of a frequency offset, the apparatus including a setting unit to receive, from a terminal, a plurality of signals comprising a first signal and a second signal, and to set a variable corresponding to each of the plurality of signals, a detector to detect a first residual phase of a carrier frequency of the first signal and a second residual phase of a carrier frequency of the second signal using the variables, and a recognizer to recognize a location of the terminal by calculating a difference between the first residual phase and the second residual phase. | 03-13-2014 |
20140072016 | APPARATUS AND METHOD FOR NEAR FIELD COMMUNICATION IN ULTRA WIDEBAND (UWB) - Disclosed is an apparatus and method for near field communication in an ultra wideband (UWB). An apparatus for near field communication in an UWB may include a determiner to determine the number of repetitions of a first sequence in each of n preambles, n denoting a natural number, and a processor to generate n short preambles by repeatedly arranging the first sequence based on the determined number of repetitions, and to generate the n preambles by arranging a long preamble with respect to each of the generated n short preambles. | 03-13-2014 |
20140192824 | APPARATUS AND METHOD FOR TRANSMIT/RECEIVE OF IMAGE DATA - Disclosed are an apparatus and method for transmitting/receiving image data. The method for transmitting image data includes classifying each pixel of image data into upper bits and lower bits, enabling the classified upper bits to be included in a payload of a Most Significant Bit (MSB) packet, and also enabling the classified lower bits to be included in a payload of a Least Significant Bit (LSB) packet, generating a header of the MSB packet and a header of the LSB packet, combining the payload and the header to respectively generate the MSB packet and the LSB packet, and transmitting the generated MSB packet and the LSB packet. | 07-10-2014 |
20140235172 | METHOD AND SYSTEM FOR COMMUNICATING BETWEEN DEVICES - A method and system for communicating between devices according to the present invention are provided. The method for communicating between the devices according to the present invention is used for communicating with a first terminal, and is carried out in a device having a capacitive touch screen. The method includes: detecting a change in capacitance for a specific part of the capacitive touch screen, which occurs by means of the first terminal; and acquiring information transferred from the first terminal on the basis of the detected change in capacitance of the capacitive touch screen. The communicating method using such a touch screen may be easily used for various services such as authenticating terminals or transferring files between local terminals. | 08-21-2014 |
20140241238 | METHOD AND APPARATUS FOR ALLOCATING SEQUENCE TO SYNCHRONIZATION CHANNEL FOR NODE IDENTIFICATION IN WIRELESS COMMUNICATION SYSTEM - Provided is an apparatus for allocating a sequence to a synchronization channel for a node identification (ID), the apparatus including: a base node sequence generator to generate a base sequence that is a sequence for a node ID of a base node; a relay node sequence generator to generate a relay sequence that is a sequence for a node ID of a relay node by transforming the base sequence; a baseband signal generator to generate a baseband signal by mapping the base sequence or the relay sequence to a frequency domain and a time domain; and a transmitter to transmit the baseband signal. | 08-28-2014 |
20140314019 | METHOD AND APPARATUS FOR CONTENTION-BASED CHANNEL ACCESS WITH DIRECTIONAL ANTENNA OVER WIDEBAND HIGH FREQUENCY WIRELESS SYSTEM - Provided are a method of performing contention based channel access by classifying a contention period into a beamformable contention period in which a beamforming is allowed and a non-beamformable contention period in which the beamforming is interrupted so as to resolve an issue regarding channel access occurring due to an introduction of a directional antenna for handling a path loss in a wideband wireless communication system according to an embodiment of the present invention, and a method for maximizing a spatial reuse gain by managing, for each direction, information about a transmission time of a message received from a dispersion device. | 10-23-2014 |
20140321357 | APPARATUS AND METHOD FOR TRANSMITTING AND RECEIVING DATA IN WIRELESS COMMUNICATION SYSTEM - A communication method including setting a direct route to a station, the station transmitting an information element in which a relay support capability field is set to 1, setting a relay route to a relay device, the relay device transmitting an information element in which a relay capability field is set to 1, and transmitting data via at least one of the direct route or the relay route; and a communication apparatus for implementing the communication method. | 10-30-2014 |
20140355510 | METHOD AND APPARATUS FOR ADJUSTING SIGNAL TRANSMISSION STARTING POINT OF TERMINAL IN WIRELESS NETWORK - Disclosed is a method for adjusting a transmission time point of at least one second terminal in a wireless network by a first terminal. In the method for adjusting a transmission time point of a terminal, a transmission time point of the second terminal is set, a first frame including information regarding the transmission time point is transmitted to the second terminal, a first response frame transmitted according to the transmission time point from the second terminal is received, and the transmission time point is adjusted according to an arrival time of the first response frame. | 12-04-2014 |
20140362715 | APPARATUS AND METHOD FOR BROADBAND WIRELESS LOCAL AREA COMMUNICATION - Provided is an apparatus and method for wideband short-range wireless communication using a directional antenna in a millimeter wave band, and the method for wideband short-range wireless communication according to an embodiment may determine a first time interval and a second time interval for a cooperated data frame transfer based on a packet transmission time at each transmission from a source node to a destination node, transmit a frame to a relay node through an antenna pattern directed towards the relay node at a start point of the first time interval, and transmit the frame to the destination node through an antenna pattern directed towards the destination node after a predetermined period of time from a start point of the second time interval. | 12-11-2014 |
20140370802 | WIRELESS COMMUNICATION METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING FRAME THROUGH RELAY - The present invention provides a wireless communication method used for transmitting and receiving a relay in a wireless local area network system. The wireless local area network system according to an embodiment of the present invention relates to a wireless communication method of setting a relay link through a relay and setting a transmission time point at which a data frame is transmitted in a source device by recognizing a propagation delay between devices, and the like when an operation mode of the set relay corresponds to a cooperating mode. | 12-18-2014 |
20140377641 | POUCH TYPE SECONDARY BATTERY AND METHOD OF MANUFACTURING THE SAME - A pouch type secondary battery and a method of manufacturing the same are disclosed. The pouch type secondary battery includes a pouch type case formed by attaching an upper sheet and a lower sheet, and an electrode assembly received in the pouch type case. A polymer coating layer for improving sealability is further included at an outer side portion of the pouch type case, in which the upper sheet and the lower sheet are attached. | 12-25-2014 |
20150013433 | AIR MICROMETER - The present invention relates to an air micrometer. The air micrometer includes a target object accommodation slot having a bottom surface and a ceiling surface to accommodate at least one portion of the target object between the bottom surface and the ceiling surface, and an air spray unit including a nozzle opened in the bottom surface or the ceiling surface to spray the air onto the target object that is accommodated between the bottom surface and the ceiling surface. | 01-15-2015 |
20150078193 | COMMUNICATION METHOD FOR SOURCE DEVICE, DESTINATION DEVICE AND RELAY DEVICE - A communication method of a source device according to an embodiment includes detecting a status of a first link directly connected from the source device to a destination device or a status of a second link connected from the source device to the destination device via a relay device, selecting any one of the first link and the second link based on a result of the detection, and transmitting data using the selected link. | 03-19-2015 |