Patent application number | Description | Published |
20110090855 | METHOD FOR MANAGING RESOURCES IN HIGH CAPACITY WIRELESS COMMUNICATION SYSTEM - Provided is a method for managing resource in a high capacity wireless communication system capable of communicating with two or more users in a multi-input multi-output (MIMO) scheme when a base station transmits data. The includes: transmitting a MU-MIMO request-to-send (RTS) message to stations intending to transmit data in the MIMO scheme, and sequentially receiving a clear-to-send (CTS) message from stations intending to receive the data; transmitting a transmission ACK message to the stations, wherein the transmission ACK message includes information which prevents data collision during a time of data transmission to the stations and ACK signal; and configuring data to be transmitted to the stations into aggregated packets (A-MPDUs), transmitting the A-MPDUs to the stations in the MIMO scheme, and receiving a block ACK message from the stations. | 04-21-2011 |
20110199971 | Packet transmission/reception method and apparatus in wireless communication system - A method for simultaneously transmitting packets having different lengths to two or more users in a wireless communication system includes: generating the packets which are to be transmitted to the respective users; and simultaneously transmitting the generated packets to the respective users. Each of the packets contains information on the position of a symbol to which a tail field of the packet belongs, and the information on the position of the symbol to which the tail field belongs includes at least one of the maximum symbol number of the packet, the symbol number of transmission data of the packet, positional information of a last aggregated MAC protocol data unit (A-MPDU) subframe, and positional information of a null delimiter. | 08-18-2011 |
20110205968 | Method and apparatus for performing sounding in wireless communication system - A sounding method of a transmitting terminal that transmits data to two or more receiving terminals in a wireless communication system includes transmitting a frame for requesting transmission of first sounding information to the two or more receiving terminals, receiving a frame including the first sounding information from each of the two or more receiving terminals, transmitting a frame including information for requesting transmission of channel state information and second sounding information to the two or more receiving terminals, and receiving a frame including the channel state information, which is measured by each of the two or more receiving terminals by using the second sounding information, from each of the two or more receiving terminals, wherein the channel state information measured by using the first sounding information and the channel state information received from each of the two or more receiving terminals are used to simultaneously transmit the data to the two or more receiving terminals. | 08-25-2011 |
20110280182 | PACKET TRANSMISSION/RECEPTION METHOD AND APPARATUS IN WIRELESS COMMUNICATION SYSTEM - A method for simultaneously transmitting packets to one or more users in a wireless communication system includes: generating the packets which include length information and are to be transmitted to the one or more users; and simultaneously transmitting the generated packets to the one or more users. The length information includes information representing a unit of the length information and information representing lengths of the packets according to the unit. | 11-17-2011 |
20120155424 | COMMUNICATIONS DEVICE AND METHOD IN A HIGH-CAPACITY WIRELESS COMMUNICATION SYSTEM - The present invention relate to a wireless communication system; and, more particularly, to a communicating apparatus and method in a high rate wireless communication system. | 06-21-2012 |
20120213184 | METHOD FOR ALLOCATING GROUP ADDRESS IN WIRELESS LOCAL NETWORK AREA, METHOD FOR TRANSMITTING RESPONSE REQUEST FRAME AND RESPONSE FRAME IN PLURALITY OF STATIONS, AND METHOD FOR TRANSMITTING DATA USING GROUP ADDRESS - The present invention relates to a method for allocating a group address in a wireless LAN, a method for transmitting a response request frame and a response frame to a plurality of terminals, and a data transmission method using the same group address. The method for allocating the group address of the present invention comprises the steps of: transmitting a group agreement request frame including the group address (identifier) to terminals as grouping targets; and receiving a response frame corresponding to the group agreement request frame. The group agreement request frame includes group address (identifier) information and a terminal address as a destination address and is transmitted to a receiving terminal as a destination. | 08-23-2012 |
20120230317 | METHOD FOR TRANSMITTING A RESPONSE REQUEST FRAME AND A RESPONSE FRAME IN A MULTI-USER BASED WIRELESS COMMUNICATION SYSTEM - The present invention relates to a method for efficient transmission of a request frame such as an RTS/CTS frame and a response frame in response to the request frame in a multi-user based wireless communication system. The method of the present invention comprises: a process where wireless terminals transmit a response frame at their own response frame transmission time through a request frame that contains information about a plurality of wireless terminals and information about the response frame transmission time of the respective wireless terminals; a process where the respective wireless terminals transmit a response frame according to a token scheme such that the response frame is transmitted to a final access point; and a process where only a representative wireless terminal selected depending on a given wireless environment receives the response frame. | 09-13-2012 |
20120236840 | METHOD FOR PROTECTING DATA IN A MU-MIMO BASED WIRELESS COMMUNICATION SYSTEM - The present invention relates to a method for protecting MU-MIMO (Multi User-Multiple Input Multiple Output) data through a multi-RTS/CTS frame exchange in a MU-MIMO based wireless communication system. The method of the present invention comprises: a process where an indicator for VHT data protection is added to an RTS frame, using the structure of an RTS/CTS frame for an existing legacy terminal during the multi RTS/CTS frame exchange; a process where an access point designates and then transmits the duration period of the RTS frame while transmitting the RTS frame; and a process where wireless terminals up to the (n-1)th terminal designate the duration period of the CTS frame as ‘0’ and send the designated duration period, while only the n-th wireless terminal designates NAV for data protection. | 09-20-2012 |
20120263091 | METHOD FOR RECOVERING A FRAME THAT FAILED TO BE TRANSMITTED IN A MU-MIMO BASED WIRELESS COMMUNICATION SYSTEM - A method and apparatus of transmitting in a wireless communication system is provided. A transmitter generates a group management frame including a group information and position information and a data frame including a group control information having a group identifier for each of a plurality of groups. The group information indicates whether the receiver is a member of each of the plurality of groups. The position information indicates a position of at least one stream corresponding to at least one group of which the receiver is a member. | 10-18-2012 |
20130258937 | PACKET TRANSMISSION/RECEPTION METHOD AND APPARATUS IN WIRELESS COMMUNICATION SYSTEM - A method for simultaneously transmitting packets to one or more users in a wireless communication system includes: generating the packets which include length information and are to be transmitted to the one or more users; and simultaneously transmitting the generated packets to the one or more users. The length information includes information representing a unit of the length information and information representing lengths of the packets according to the unit. | 10-03-2013 |
20140036757 | METHOD FOR RECOVERING A FRAME THAT FAILED TO BE TRANSMITTED IN A MU-MIMO BASED WIRELESS COMMUNICATION SYSTEM - A method and apparatus of transmitting in a wireless communication system is provided. A transmitter generates a group management frame including a group information and position information and a data frame including a group control information having a group identifier for each of a plurality of groups. The group information indicates whether the receiver is a member of each of the plurality of groups. The position information indicates a position of at least one stream corresponding to at least one group of which the receiver is a member. | 02-06-2014 |
Patent application number | Description | Published |
20100259827 | DISPLAY APPARATUS - A display apparatus comprising a display module, a front panel provided in front of the display module, a light shielding layer provided over the front panel near a periphery of the front panel, and a reflective layer formed to overlap with the light shielding layer. | 10-14-2010 |
20100259828 | DISPLAY APPARATUS - A display apparatus includes a display module, a front panel provided in front of the display module, and a pattern which is formed over the front panel. One portion of the pattern that is closer to an edge of the front panel allows for less transmittance of light than other portions of the pattern. | 10-14-2010 |
20100259829 | DISPLAY APPARATUS - A display apparatus includes a panel located in front of a display module, a pattern formed over the panel, and a reflective layer formed to overlap the pattern. At least one portion of the pattern provided closer to an edge of the panel allows for less transmittance of light and other portions of the pattern. | 10-14-2010 |
Patent application number | Description | Published |
20100128688 | DATA TRANSMISSION/RECEPTION METHOD IN WIRELESS COMMUNICATION SYSTEM, AND DATA TRANSMITTER AND DATA RECEIVER USING THE SAME - A data transmission method includes: deciding the priority of data; deciding a channel priority based on a channel state; selecting a modulation and coding scheme (MCS) for the data based on the priority of data; selecting a transmission channel through which the data is to be transmitted, based on the channel priority; and modulating and coding the data in accordance with the selected MCS, and transmitting the modulated and coded data through the selected transmission channel. | 05-27-2010 |
20100144359 | APPARATUS AND METHOD FOR ALLOCATING IN WIRELESS COMMUNICATION SYSTEM - An apparatus for allocating resources in a wireless communication system includes: a verification unit configured to receive channel information and base station information of a system, verify from the channel information the number of channels capable of being used in the system and bandwidths of the channels, and verify from the base station information the number of base stations and bandwidths of channels requested by the base stations to be allocated; an allocation unit configured to allocate at least one channel of the channels capable of being used to each base station in response to verification by the verification unit; and a generation unit configured to generate allocation information corresponding to channel allocation by the allocation unit and transmit the allocation information to the base stations. | 06-10-2010 |
20100177656 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING WIRELESSLY PROVIDING HIGH CAPACITY SERVICE USING MULTIPLE ACCESS LINKS - A data receiving method in a wireless LAN system using multiple channels includes: determining whether a difference value of signal levels of first and second access points is equal to or less than a preset value; transmitting an association request frame to the first and second access points according to the determination result; and receiving association response frames from the first and second access points. | 07-15-2010 |
20100177756 | ASSOCIATION METHOD IN WIRELESS LAN SYSTEM USING MULTIPLE CHANNELS - An association method in a wireless LAN system using multiple channels includes: broadcasting a beacon frame including first channel information which is information on first available frequency channels of an access point; receiving an association request frame from a wireless station having received the beacon frame, the association request frame including the second channel information which is information on second available frequency channels of the wireless station among the first available frequency channels; and transmitting an association response frame to the wireless station, the association response frame including third channel information which is information on frequency channel allocated to the wireless station. | 07-15-2010 |
Patent application number | Description | Published |
20100118851 | APPARATUS AND METHOD FOR PROVIDING WLAN SERVICE USING MULTIPLE CHANNEL - Provided are an apparatus and method for providing a WLAN service using multiple channels. The wireless local area network (WLAN) service apparatus includes a service request receiver configured to receive service request information from a first wireless terminal accessed through a first channel, a data receiver configured to receive data from a first access point accessed through a second channel according to the service request information, a data transmitter configured to transmit the data to the first wireless terminal in a predetermined service area, and an access controller configured to control the first wireless terminal and the first access point to be accessed through different channels. | 05-13-2010 |
20100177657 | METHOD OF MEDIUM ACCESS CONTROL IN WIRELESS LAN SYSTEM USING MULTIPLE CHANNELS - A medium access control method in a wireless LAN system using multiple channels includes: determining the size of data frames related to a plurality of wireless stations connected through multiple channels; adjusting the number or length of the data frames related to the respective wireless stations, based on the result of determination, so that transmission start time and transmission end time of the data frames coincide during a transmission duration of an access point; and transmitting the data frames, the number or length of which has been adjusted, to the respective wireless stations. | 07-15-2010 |
20100177757 | METHOD FOR SETTING TRANSMISSION OPPORTUNITY AND FOR TRANSMITTING AND RECEIVING DATA IN WIRELESS LAN SYSTEM USING MULTIPLE CHANNEL - A transmission opportunity setting method in a wireless LAN system using multiple channels includes: receiving a request-to-send (RTS) frame from a wireless station, the RTS frame including information on a wireless LAN mode of the wireless station; and transmitting a clear-to-send (CTS) frame to the wireless station according to at least one of the number of remaining available channels among the multiple channels and the wireless LAN mode of the wireless station. | 07-15-2010 |
Patent application number | Description | Published |
20090135942 | APPARATUS AND METHOD FOR TRANSMITTING DATA USING MULTI-ANTENNA - Provided are an apparatus and method for transmitting data using a multi-antenna. The apparatus includes a transmission buffer selecting unit for selecting transmission buffer of an antenna group corresponding to characteristics of each aggregated Medium access control Protocol Data Units (MPDU) when a list of aggregated MPDUs to transmit is received; a data transmitting unit for generating a list of aggregated MPDUs to transmit with storage information of the aggregated MPDUs, transferring the generated list to the transmission buffer selecting unit and transmitting corresponding aggregated MPDUs through the selected transmission buffer; and a timing controlling unit for controlling a transmission timing of each aggregated MPDU. | 05-28-2009 |
20090141679 | METHOD FOR FORMING FRAME IN WIDEBAND WIRELESS COMMUNICATION SYSTEM USING MULTI-ANTENNA - A method for forming a frame in a wireless communication system is provided. In the method, a plurality of preamble symbols are disposed. Then, a signal symbol is disposed at a predetermined position among the plurality of preamble symbols. At least one of data symbols is disposed after the plurality of preamble symbols. | 06-04-2009 |
20090154382 | MEDIUM ACCESS CONTROL DEVICE FOR PROCESSING DATA AT HIGH SPEED AND METHOD THEREOF - Provide are a medium access control MAC device for processing data at a high speed and a method thereof. The MAC device includes a packet receiving and processing unit for receiving packet data transmitted from a physical layer device and extracting data and data information from the received packet data by processing the received packet data; a data multiprocessing unit for sequentially multiplexing the extracted data and storing the extracted data in a first memory; and a data arranging unit for arranging the stored data in sequence number order using addresses of the first memory and the extracted data information, and transmitting the arranged data to an upper layer interface. | 06-18-2009 |
20090154405 | MEDIUM ACCESS CONTROL METHOD AND DATA TRANSMISSION METHOD USING THE SAME IN WIRELESS LOCAL AREA NETWORK - Provided are a MAC method and a method for transmitting data using the same in a WLAN. The MAC method includes: transmitting a bandwidth scheduling report frame for informing information on downlinks and uplinks allocated to a terminal by including the bandwidth scheduling report frame in one of the downlinks where the bandwidth scheduling report frame includes a plurality of downlinks, a plurality of uplinks, and a plurality of short uplinks and the number of the plurality of downlinks is equal to the number of the plurality of uplinks; receiving a bandwidth request frame for requesting bandwidth allocation through one of the uplinks; and allocating a bandwidth to each of the terminals by an unit of the downlink and the uplink. | 06-18-2009 |
20100118816 | APPARATUS AND METHOD FOR TRANSMITTING DATA IN WIRELESS COMMUNICATION SYSTEM - An apparatus for transmitting in a wireless communication system includes: a frame generating unit configured to generate a frame based on user data and to transmit the frame and frame information; a scheduling unit configured to generate a schedule of the frames to be transmitted on a frame-by-frame basis based on the frame information and to transmit the schedule; and a data matching unit configured to match the frames based on the schedule so as to transmit the frames at a time. | 05-13-2010 |
20100157893 | APPARATUS AND METHOD FOR TRANSMITTING DATA IN WIRELESS COMMUNICATION SYSTEM - Disclosed is an apparatus and method for transmitting data in a wireless communication system. The apparatus for transmitting a packet data in a wireless communication system includes a Media Access Control (MAC) layer for determining the number of the number of preambles to be inserted based on a feed-back reply signal from a receiver, and generating a multi-preamble aggregation packet by inserting the determined number of preambles into packets received from an upper layer and a physical layer for forming the multi-preamble aggregation packet generated in a data processing unit, by using a physical layer packet, and transmitting the formed multi-preamble aggregation packet. | 06-24-2010 |
20110222478 | METHOD OF TRANSMITTING DATA FRAME TO MULTI-USER IN WIRELESS COMMUNICATION SYSTEMS - Provided a method for simultaneously transmitting data frames to a plurality of STAs in a multi-user based wireless communication system. The method includes: requesting sounding or feedback for the plurality of STAs by using a first control information frame containing first group information; receiving responses to the sounding or feedback request; reconfiguring the plurality of STAs composing the first group into a plurality of second groups on the basis of the responses such that the sum of maximum transport streams of the respective STAs composing one group becomes equal to or less than the maximum number of streams transmitted by an AP; transmitting a second control information frame containing second group information on the respective second groups to the plurality of STAs composing the first group; and transmitting data frames by using the second group information. | 09-15-2011 |
20110286378 | METHOD AND APPARATUS FOR TRANSMITTING/RECEIVING PACKET IN WIRELESS COMMUNICATION SYSTEM - A method for simultaneously transmitting packets having different lengths to two or more users in a wireless communication system includes: generating the packets to transmit to the respective users, the packets containing information on the maximum transmission length of the packets having different lengths; and simultaneously transmitting the generated packets to the respective users. The maximum transmission length is represented by the number of symbols, and each of the packets sequentially contains control information required for transmitting the packet, data, a tail field, and a PHY pad field, and is generated by inserting a MAC pad between the control information and the data such that the tail field and the PHY pad field are positioned at the last byte of the last symbol of the maximum transmission length. | 11-24-2011 |
20120195302 | METHOD AND APPARATUS FOR TRANSCEIVING DATA IN A MIMO SYSTEM - The present invention relates to a method and apparatus for transceiving data. A method in which a transmitting terminal transmits data to a receiving terminal in a MIMO system according to one embodiment of the present invention comprises the following steps: generating a data field containing the data; generating a signal field containing information on the data field; generating a data frame containing the data field and the signal field; and transmitting the data frame to the receiving terminal. According to the present invention, an end of the frame being transmitted is accurately notified to the receiving terminal in a communication system in which the frame is transmitted using MIMO, thereby decoding the frame in a more efficient manner at the receiving terminal. | 08-02-2012 |
20120230242 | METHODS FOR TRANSMITTING A FRAME IN A MULTI-USER BASED WIRELESS COMMUNICATION SYSTEM - The present invention relates to methods for transmitting a frame by grouping a plurality of wireless terminals in a multiuser based wireless communication system. The present invention includes a method for transmitting a frame by including information about multiple receiver terminals in a MAC frame, another method for transmitting a frame by allocating group addresses and then using a corresponding group address for frame transmission, and yet another method for transmitting a frame by using a unique group sequence number that is allocated to each group and group control information that contains bitmap information. The group control information is included in a destination address field of a MAC layer, or in a signal field of a physical layer, or in both the MAC layer and the physical layer. | 09-13-2012 |
20130145224 | METHOD OF TRANSMITTING DATA BLOCK AND TRANSMITTER USING THE SAME - A method for transmitting a data block in a wireless communication system and a transmitter are provided. The transmitter transmits the data block to a receiver and generates a retransmission block for the retransmission of the data block if it is determined that the transmission fails. The transmitter determines whether the channel access is performed according to a transmit time of the retransmission block. | 06-06-2013 |
20130177096 | METHOD AND APPARATUS FOR TRANSCEIVING DATA IN A MIMO SYSTEM - The present invention relates to a method and apparatus for transceiving data. A method in which a transmitting terminal transmits data to a receiving terminal in a MIMO system according to one embodiment of the present invention comprises the following steps: generating a data field containing the data; generating a signal field containing information on the data field; generating a data frame containing the data field and the signal field; and transmitting the data frame to the receiving terminal. According to the present invention, an end of the frame being transmitted is accurately notified to the receiving terminal in a communication system in which the frame is transmitted using MIMO, thereby decoding the frame in a more efficient manner at the receiving terminal. | 07-11-2013 |