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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |