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 |
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 |
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 |
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 |
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 |
20110096760 | METHOD AND APPARATUS FOR CONTROLLING TRANSMISSION POWER IN WLAN SYSTEM - A transmit power control method of a first station in a wireless LAN (WLAN) system includes: receiving path loss information from an (access point) AP, the path loss information containing a maximum value among path losses between the AP and at least one or more stations included in the WLAN system; controlling a transmit power by using the path loss information; and transmitting a frame according to the controlled transmit power. In said controlling the transmit power by using the path loss information, the transmit power is controlled by using a path loss obtained by adding the maximum value and a path loss between the first station and the AP or by using the path loss between the first station and the AP. | 04-28-2011 |
20110200130 | METHOD AND APPARATUS FOR TRANSMITTING/RECEIVING DATA IN MU-MIMO SYSTEM - A method for transmitting, by a single transmitting station, data to a plurality of receiving stations includes: generating a plurality of data frames including the data and Ack order information; transmitting the plurality of data frames to the plurality of receiving stations; and sequentially receiving block Ack signals from the plurality of receiving stations according to the Ack order information. | 08-18-2011 |
20120195301 | METHOD AND APPARATUS FOR GENERATING, TRANSMITTING, AND RECEIVING A DATA FRAME IN A WIRELESS COMMUNICATION SYSTEM - The present invention relates to a technique relating to a method and apparatus for generating, transmitting, and receiving a data frame having a newly proposed format in a wireless communication system. According to the technique, the method for generating a data frame in a wireless communication system comprises the following steps: generating at least one first subframe; generating at least one second subframe; and generating a data frame including the first and second subframes, wherein the first and second subframes include length information of a MAC protocol data unit (MPDU) contained in the first and second subframes, and the length information of the MPDU contained in the second subframe is zero. | 08-02-2012 |
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 |
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 |
20120263160 | METHOD FOR SENDING/ RECEIVING DATA IN A WIRELESS PACKET COMMUNICATION SYSTEM IN WHICH THERE IS SIMULTANEOUS COMMUNICATION WITH VARIOUS TERMINALS - A method and apparatus for transmitting a frame to at least one receiver in a wireless communication system is provided. The apparatus determines at least one data length in accordance with each receiver based on a number of symbol for the frame to be transmitted, determines a maximum data length among the at least one data length, and determines a length of the frame in time domain based on the maximum data length. The apparatus generates the frame in accordance with the length of the frame, the frame including a first signal field and at least one second signal field. The first signal field indicates the length of the frame and each second signal field indicates each data length. | 10-18-2012 |
20120320896 | METHOD FOR SENDING/RECEIVING DATA IN A WIRELESS PACKET COMMUNICATION SYSTEM IN WHICH THERE IS SIMULTANEOUS COMMUNICATION WITH VARIOUS TERMINALS - A method and apparatus for transmitting a frame to at least one receiver in a wireless communication system is provided. The apparatus determines at least one data length in accordance with each receiver based on a number of symbol for the frame to be transmitted, determines a maximum data length among the at least one data length, and determines a length of the frame in time domain based on the maximum data length. The apparatus generates the frame in accordance with the length of the frame, the frame including a first signal field and at least one second signal field. The first signal field indicates the length of the frame and each second signal field indicates each data length. | 12-20-2012 |
20130223349 | METHOD AND APPARATUS FOR GENERATING, TRANSMITTING, AND RECEIVING A DATA FRAME IN A WIRELESS COMMUNICATION SYSTEM - The present invention relates to a technique relating to a method and apparatus for generating, transmitting, and receiving a data frame having a newly proposed format in a wireless communication system. According to the technique, the method for generating a data frame in a wireless communication system comprises the following steps: generating at least one first subframe; generating at least one second subframe; and generating a data frame including the first and second subframes, wherein the first and second subframes include length information of a MAC protocol data unit (MPDU) contained in the first and second subframes, and the length information of the MPDU contained in the second subframe is zero. | 08-29-2013 |
20140233509 | METHOD AND APPARATUS FOR CONTROLLING TRANSMISSINON POWER IN WLAN SYSTEM - A transmit power control method of a first station in a wireless LAN (WLAN) system includes: receiving path loss information from an (access point) AP, the path loss information containing a maximum value among path losses between the AP and at least one or more stations included in the WLAN system; controlling a transmit power by using the path loss information; and transmitting a frame according to the controlled transmit power. In said controlling the transmit power by using the path loss information, the transmit power is controlled by using a path loss obtained by adding the maximum value and a path loss between the first station and the AP or by using the path loss between the first station and the AP. | 08-21-2014 |
20150085804 | METHOD AND APPARATUS FOR GENERATING, TRANSMITTING, AND RECEIVING A DATA FRAME IN A WIRELESS COMMUNICATION SYSTEM - The present invention relates to a technique relating to a method and apparatus for generating, transmitting, and receiving a data frame having a newly proposed format in a wireless communication system. According to the technique, the method for generating a data frame in a wireless communication system comprises the following steps: generating at least one first subframe; generating at least one second subframe; and generating a data frame including the first and second subframes, wherein the first and second subframes include length information of a MAC protocol data unit (MPDU) contained in the first and second subframes, and the length information of the MPDU contained in the second subframe is zero. | 03-26-2015 |