Patent application number | Description | Published |
20090067397 | PROCEDURE FOR WIRELESS NETWORK MANAGEMENT AND STATION SUPPORTING THE PROCEDURE - There is provided a procedure for wireless network management and a station supporting the procedure. In the procedure, non-AP station which wants to us a traffic filter service (TFS) transmits a TFS request message including one or more TFS request elements for defining information about the requesting traffic filters to an access point (AP). And, the non-AP station receives, from the AP in response to the first TFS request message, a TFS response message including one or more TFS response elements for defining information about the status of the requesting traffic filters. | 03-12-2009 |
20090274135 | DIRECT LINK SETUP METHOD IN TUNNELED DIRECT LINK SETUP WIRELESS NETWORK AND STATION SUPPORTING THE METHOD - Provided are a Tunneled Direct Link Setup (TDLS) establishment method for a TDLS initiator and a station supporting the establishment method. In the establishment method, a requesting Non-AP QSTA transmits a TDLS setup request frame via an access point(AP) to an intended peer Non-AP QSTA. And, the requesting Non-AP QSTA receives a TDLS setup response frame via the AP from the intended peer station in response to the TDLS setup request frame. And, the requesting Non-AP QSTA transmits a TDLS setup confirm frame via the AP to the intended peer station in response to the TDLS setup response frame. | 11-05-2009 |
20090279470 | DEVICE AND METHOD FOR MULTICAST IN WIRELESS LOCAL ACCESS NETWORK - A device and method for multicasting data in a wireless network. The method includes receiving multicast data at a specific node of the wireless network, the multicast data including a multicast acknowledgement request; and determining by the specific node whether or not the specific node is requested to send an acknowledgement to the multicast acknowledgement request. Also, a device and method for multicasting data in a wireless network. The method includes transmitting multicast data, the multicast data including a multicast acknowledgement request, the multicast acknowledgement request including information configured to enable a specific node of the wireless network to determine whether or not the specific node is requested to send an acknowledgement to the multicast acknowledgement request. | 11-12-2009 |
20090279514 | APPARATUS AND METHOD FOR TRANSMISSION OPPORTUNITY IN MESH NETWORK - An apparatus and method of transmission opportunity in a mesh network is disclosed. A beacon timing from a receiver MP is received. The beacon timing includes a beacon reception timing of a received beacon frame that is received by the receiver MP from a neighboring MP of the receiver MP. A transmission opportunity is determined in order not to be extended across the beacon reception timing. | 11-12-2009 |
20090290524 | METHOD FOR RETRANSMITTING MULTICAST FRAMES AND METHOD FOR PROCESSING RECEIVED MULTICAST FRAMES IN WIRELESS NETWORK - A method for retransmitting a multicast frame in a wireless network and a method for de | 11-26-2009 |
20100135268 | METHOD AND DEVICE FOR TRANSMISSION OPPORTUNITY TRUNCATION - A method and device for communicating in a contention-based communication network. The method includes upon an early termination of a previously obtained transmission opportunity (TXOP) for communications with one of a mobile device and a base station, transmitting a contention free end (CF-End) frame to the base station for further broadcasting to the network by the base station. Also, a method and device for communicating in a contention-based communication system. The method includes receiving in a base station a first contention free end (CF-End) frame from a first mobile device indicating an early termination of a transmission opportunity (TXOP) previously obtained by the first mobile terminal for communications between the first mobile device and one of the base station and a second mobile device; and omnidirectionally broadcasting a second CF-End frame with a duration field having a value equal to zero. | 06-03-2010 |
20100260091 | METHOD AND APPARATUS FOR PROCESSING MULTICAST FRAME - A method of processing a multicast frame in a wireless local area network (WLAN) and an apparatus supporting the method are provided. The method comprises receiving, at a station, a unicast frame from an access point (AP), the unicast frame including an unicast address indicating a single station which receives the unicast frame, receiving a multicast frame from the AP, the multicast frame including a group address indicating a group of stations which receives the multicast frame, determining whether the unicast frame is duplicated with the multicast frame, and discarding the multicast frame if the unicast frame is duplicated with the multicast frame. | 10-14-2010 |
20100271995 | PROCEDURE FOR A POWER SAVE MODE IN A DIRECT LINK SETUP WIRELESS NETWORK - There is provided a protocol for a power save mode (PSM) in a direct link setup wireless network. In an aspect of the present invention, among first and second stations between which a direct link has been set up, the first station trying to enter the PSM transmits a request message, including schedule information necessary for communication with the second station, to the second station. The second station transmits a response message, including a status code indicating whether it accepts the schedule information or not, to the first station in response to the request message. If the status code indicates that the second station accepts the schedule information, the first station may transmit an MPDU whose power save bit is set to ‘1’ to the second station and then enter the PSM. However, if the status code indicates unacceptability, modified schedule information may be included in the response message. | 10-28-2010 |
20110013606 | METHOD OF OPERATING ACTIVE SCANNING TO CONFIGURE MESH NETWORK - A method of operating active scanning to configure a mesh network includes receiving a probe request frame from a mesh point (MP), the probe request frame comprising a Mesh Identifier (ID) information element, and transmitting a probe response frame to the MP when a Mesh ID in the Mesh ID information element is a wildcard Mesh ID or a specific Mesh ID. | 01-20-2011 |
20120170534 | Station Operation Method and Apparatus in TV Whitespace - The present invention relates to a station (hereinafter, ‘STA’) operation method and apparatus in a TV whitespace. In a TVWS band, when an STA operating as an unlicensed device with permission to operate in an available channel not used by a licensed device needs to operate in the TVWS band by acquiring information on the available channel, the STA transmits an available channel information request message to a device having database information; receives, from the device having database information, an ACK message for the available channel information that includes (a) identification information on an available channel, (b) information on the maximum allowable power level in the available channel, and (c) information on valid time of the available channel; and transmits/receives a signal using the information of (a), (b) and (c), i.e., using the maximum allowable power level within the valid time in the available channel. | 07-05-2012 |
20120184318 | Method and Apparatus of Transmitting a White Space Map Information in a Wireless Local Area Network System - A method of transmitting a White Space Map information in a wireless local area network system (WLAN) is disclosed. A method of transmitting a white space map information from a first station to a second station in a regulatory domain where a licensed device and an unlicensed device are permitted to operate together in a wireless local area network (WLAN) comprises acquiring a first list of available channels at each location of a plurality of locations from a regulatory database; determining a second list of available channels at a white space zone (WSZ) using the first list of available channels at each location of a plurality of locations; and transmitting, to the second station, one of a beacon frame, a probe response frame and a white space map announcement frame comprising a white space map (WSM) element, the WSM element including information of the WSZ and the second list of available channels, wherein the WSZ is a geographical area in which common available channels are set. | 07-19-2012 |
20120195300 | PROCEDURE FOR WIRELESS NETWORK MANAGEMENT AND STATION SUPPORTING THE PROCEDURE - There is provided a procedure for wireless network management and a station supporting the procedure. In the procedure, non-AP station which wants to us a traffic filter service (TFS) transmits a TFS request message including one or more TFS request elements for defining information about the requesting traffic filters to an access point (AP). And, the non-AP station receives, from the AP in response to the first TFS request message, a TFS response message including one or more TFS response elements for defining information about the status of the requesting traffic filters. | 08-02-2012 |
20120218956 | Station Operation Method and Apparatus in TV Whitespace - The present invention relates to a station (hereinafter, ‘STA’) operation method and apparatus in a TV whitespace. In a TVWS band, when an STA operating as an unlicensed device with permission to operate in an available channel not used by a licensed device needs to operate in the TVWS band by acquiring information on the available channel, the STA transmits an available channel information request message to a device having database information; receives, from the device having database information, an ACK message for the available channel information that includes (a) identification information on an available channel, (b) information on the maximum allowable power level in the available channel, and (c) information on valid time of the available channel; and transmits/receives a signal using the information of (a), (b) and (c), i.e., using the maximum allowable power level within the valid time in the available channel. | 08-30-2012 |
20120218977 | APPARATUS AND METHOD FOR TRANSMISSION OPPORTUNITY IN MESH NETWORK - An apparatus and method of transmission opportunity in a mesh network is disclosed. A beacon timing from a receiver MP is received. The beacon timing includes a beacon reception timing of a received beacon frame that is received by the receiver MP from a neighboring MP of the receiver MP. A transmission opportunity is determined in order not to be extended across the beacon reception timing. | 08-30-2012 |
20120257612 | METHOD AND DEVICE FOR TRANSMISSION OPPORTUNITY TRUNCATION - A method and device for communicating in a contention-based communication network. According to an embodiment, the method includes obtaining, by a transmitter, an access to a channel during a transmission opportunity (TXOP) and transmitting, by the transmitter, a contention free (CF)-End frame to truncate the TXOP if the transmitter has no more data that the transmitter can send that fits within the TXOP, wherein the CF-End frame includes a duration field indicating a time required to complete the truncation of the TXOP. | 10-11-2012 |
20120314658 | Station Operation Method and Apparatus in TV Whitespace - The present invention relates to a station (hereinafter, ‘STA’) operation method and apparatus in a TV whitespace. In a TVWS band, when an STA operating as an unlicensed device with permission to operate in an available channel not used by a licensed device needs to operate in the TVWS band by acquiring information on the available channel, the STA transmits an available channel information request message to a device having database information; receives, from the device having database information, an ACK message for the available channel information that includes (a) identification information on an available channel, (b) information on the maximum allowable power level in the available channel, and (c) information on valid time of the available channel; and transmits/receives a signal using the information of (a), (b) and (c), i.e., using the maximum allowable power level within the valid time in the available channel. | 12-13-2012 |
20130094429 | METHOD FOR RETRANSMITTING MULTICAST FRAMES AND METHOD FOR PROCESSING RECEIVED MULTICAST FRAMES IN WIRELESS NETWORK - A method for retransmitting a multicast frame in a wireless network and for determining whether a received multicast frame is a duplicated frame. In determining whether the received multicast frame is the same duplicated frame as a previously received multicast frame, a receiver address value and a sequence number of the multicast frame may be used. When fragmentation of a multicast frame is allowed, the value of a fragment number of the multicast frame may be also used, and if it includes a traffic ID, the value of the traffic ID can be also used for determining whether or not the multicast frame is a duplicated frame. If a multicast frame is transmitted in a wireless mesh network, it is determined whether or not the multicast frame is a duplicated one by using a mesh source address, a mesh destination address, and a sequence number. | 04-18-2013 |
20130100874 | METHOD AND APPARATUS FOR PROCESSING MULTICAST FRAME - A method of processing a multicast frame in a wireless local area network system. The method includes transmitting a request message for requesting a Directed Multicast Service (DMS) in which at least one multicast frame is transmitted as at least one unicast frame by an Access Point (AP), receiving a response message from the AP in response to the request message, and receiving the at least one multicast frame from the AP, the at least one multicast frame being transmitted as the at least one unicast frame. The request message includes a DMS descriptor list field comprising a Transmission Class (TCLAS) element field and a Transmission Specification (TSPEC) element field. The TCLAS element field includes a requested multicast group address for the DMS. The TSPEC element field defines Quality of Service (QoS) expectations information for the DMS. | 04-25-2013 |
20130130731 | METHOD AND APPARATUS FOR TRANSCEIVING CHANNEL TRANSMIT POWER INFORMATION IN A WIRELESS COMMUNICATION SYSTEM - Disclosed are a method and apparatus for transceiving channel transmit power information in a wireless communication system. According to one embodiment of the present invention, transmit power information for the channel available for the device which operates in a television band may be signaled for each individual channel. | 05-23-2013 |
20130163574 | METHOD AND APPARATUS FOR DISABLING AN ILLEGAL DEVICE IN A WIRELESS LAN SYSTEM - A method for an enabler entity to indicate an event to a manager entity includes transmitting, from the enabler entity to the manager entity, an event indication message indicating an event in a device served by the enabler entity. The enabler entity enables communication between the device and the manager entity and the manager entity exchanges information required for coexistence between enabler entities comprising the enabler entity. The event indication message includes type information indicating that the event indication message is for indicating that a specific device is detected by the device, the specific device operating on a frequency not permitted to the specific device. | 06-27-2013 |
20130237192 | ACCESS METHOD BETWEEN A TERMINAL AND A BASE STATION IN A WIRELESS COMMUNICATION SYSTEM AND APPARATUS THEREOF - The present description relates to a method in which a terminal accesses a base station in a wireless communication system and to a terminal thereof. The method includes broadcasting, to at least one base station, an advertisement message containing identification information for advertising existence of the terminal; receiving, from the base station, an inviting message which allows access to the base station; and performing an access procedure with the base station in accordance with the received inviting message. The present description further relates to a method in which a base station accesses a terminal in a wireless communication system, the method including receiving an advertisement message which is broadcasted by the terminal and contains identification information for advertising existence of the terminal; transmitting, to the terminal, an inviting message which allows access to the base station; and performing an access procedure with the terminal in accordance with the inviting message. | 09-12-2013 |
20130267237 | Method and Apparatus for Transceiving Channel Availability Query and Response in a Wireless Communication System - The present invention relates to a wireless communication system, and more particularly, to a method and apparatus for transceiving channel availability query and response in a wireless communication system. According to the present invention, a scheme is provided to enable devices which operate in TVWS to request/response information on an available channel in a plurality of geographical locations in a more accurate and efficient manner. | 10-10-2013 |
20130281109 | Method and Apparatus for Transmitting and Receiving Channel Information in Wireless Communication System - The present invention relates to a method and apparatus for performing communication by obtaining available channel information through an unlicensed device in which operations are permitted within an available channel and is not used by a licensed device in a white space band, includes the steps of: transmitting a message for requesting available channel information to a database device; receiving the available channel information including first information for indicating a format of the available channel information and second information for identifying the available channel, in response to the message for requesting the available channel information; and obtaining the second information using the first information and transmitting and receiving signals within the available channel corresponding to the second information, wherein the format of the available channel information can be changed according to country. | 10-24-2013 |
20130329693 | Channel Switching to a White Space Band Through TDLS - When channel switching to a channel in a white space band is performed through tunneled direct link setup (TDLS) in a wireless local area network (WLAN) system, it is confirmed whether or not a white space band between STAs is operable by directly including white space band performance between communication target STAs and device identifier information in a TDLS request/response message. Thus, one STA performs a channel availability query (CAQ) procedure in order to obtain available channel information, and a TDLS channel switching request/response message is exchanged by selecting a target channel in an available channel. Therefore, TDLS-based channel switching to a white space band is efficiently performed. | 12-12-2013 |
20130336277 | MESH NETWORK CONFIGURATION IN A WHITE SPACE BAND - The invention relates to a method for efficiently configuring a mesh network in a white space band and to a device therefor. In order to configure a mesh network in a white space band, a first station, which is accessible to a geographical position database through direct Internet access, notifies at least one second station through a gate announcement frame, for which the first station itself serves as a mesh gate; at least one second station receives a first multi-hop management action frame including position information on each of at least one, mesh point that subscribes to a mesh network; and a second multi-hop management action frame including information on an available channel in the white space is transmitted to at least one mesh point. Therefore, a mesh network may be configured in a white space band. | 12-19-2013 |
20140029555 | DIRECT LINK SETUP METHOD IN TUNNELED DIRECT LINK SETUP WIRELESS NETWORK AND STATION SUPPORTING THE METHOD - Provided are a Tunneled Direct Link Setup (TDLS) establishment method for a TDLS initiator and a station supporting the establishment method. In the establishment method, a requesting Non-AP QSTA transmits a TDLS setup request frame via an access point (AP) to an intended peer Non-AP QSTA. And, the requesting Non-AP QSTA receives a TDLS setup response frame via the AP from the intended peer station in response to the TDLS setup request frame. And, the requesting Non-AP QSTA transmits a TDLS setup confirm frame via the AP to the intended peer station in response to the TDLS setup response frame. | 01-30-2014 |
20140086200 | METHOD AND APPARATUS FOR SUB-CHANNEL SELECTIVE ACCESS IN WIRELESS LAN SYSTEM - A method and apparatus for performing sub-channel selective access in a wireless LAN system are disclosed. A method for performing sub-channel selective access by a station (STA) in a wireless LAN (WLAN) system includes: receiving a predetermined frame from an access point (AP); selecting at least one sub-channel when the predetermined frame includes channel list information for the sub-channel selective access, bandwidth information for the sub-channel selective access, and time information for the sub-channel selective access; and operating on the selected at least one sub-channel. | 03-27-2014 |
20140092779 | METHOD AND APPARATUS FOR FINDING A NEIGHBOR IN A WIRELESS COMMUNICATION SYSTEM - The present invention relates to a wireless communication system, and more particularly, to a method and apparatus for finding a neighbor. According to one embodiment of the present invention, a method for setting an Internet protocol (IP) by a station (STA) of a wireless communication network comprises: a step of receiving network prefix information; a step of transmitting an initial generic advertisement service (GAS) request frame including the set IP address information to an access point (AP). According to the present invention, a novel method of setting an IP is proposed which can be performed independently of, or prior to the completion of, an initial link set-up process. | 04-03-2014 |
20140105196 | METHOD AND APPARATUS FOR MAINTAINING ASSOCIATION IN WIRELESS LAN SYSTEM - A method and apparatus for maintaining association in a WLAN system are disclosed. The method for performing association by a station (STA) in a wireless LAN (WLAN) system includes: transmitting an association request frame from the station (STA) to an access point (AP); and receiving an association response frame from the access point (AP) in response to the association request frame. If the association request is accepted by the access point (AP), the association response frame includes information regarding an association comeback time. | 04-17-2014 |
20140112266 | METHOD AND APPARATUS FOR CHANNEL ACCESS IN WIRELESS LAN SYSTEM - A method and apparatus for performing channel access in a WLAN system are disclosed. A method for managing a network allocation vector (NAV) by a station (STA) in a wireless LAN (WLAN) system includes: receiving a Contention Free (CF)-END frame including a duration field; if the CF-END frame is a first-type CF-END frame, resetting the NAV; and if the CF-END frame is a second-type CF-END frame, determining whether to reset the NAV according to a comparison result between a value of the duration field and a NAV value of the STA. | 04-24-2014 |
20140135032 | METHOD AND APPARATUS FOR TRANSCEIVING A CONTACT VERIFICATION SIGNAL REGARDING AVAILABLE CHANNELS IN A PLURALITY OF LOCATIONS IN A WIRELESS COMMUNICATION SYSTEM - The present invention relates to a method of receiving available channel information on K (K≧2) numbers of locations by a first type station (STA) from a second type STA in a wireless communication system includes: receiving a channel availability query (CAQ) response message, wherein the CAQ response message includes a field of the numbers (K) of the locations and K numbers of available channel list fields configured with information on an available channel list for each of the K numbers of locations, from the second type STA, and performing a communication in a white space using an available channel included in an available channel list for a single location among the K numbers of locations, wherein the K numbers of available channel list fields are configured with a Map ID field and a field of N (N≧1) numbers of available channels are repeated K times. | 05-15-2014 |
20140169290 | METHOD AND APPARATUS FOR BACKOFF FOR SLOTTED CHANNEL ACCESS IN WIRELESS LAN SYSTEM - The present invention relates to a wireless communication system, and more specifically, to a backoff method and apparatus in slotted channel access in a Wireless Local Area Network (WLAN) system are disclosed. A method for performing channel access by a station (STA) in a WLAN system includes: receiving restricted access window (RAW) configuration information for the STA from an access point (AP); performing a backoff procedure using a second backoff function state for channel access within the RAW; and performing a backoff procedure using a first backoff function state at an end of the RAW. The STA maintains a plurality of backoff function states including the first backoff function state used outside the RAW and the second backoff function state used within the RAW. | 06-19-2014 |
20140334422 | METHOD AND DEVICE FOR TRANSMITTING AND RECEIVING AVAILABLE CHANNEL INFORMATION BASED ON DIRECTIVITY IN WIRELESS COMMUNICATION SYSTEM - Disclosed are a method and device for transmitting and receiving available channel information based on directivity in a wireless communication system. A method for enabling a station (STA) to receive available channel information in a whitespace band according to one embodiment of the present invention comprises the steps of: determining a current position of the STA and a position at which the direction is changed on a moving path of the STA; determining K (K≧1) operating ranges based on the current position of the STA and the position at which the direction is changed; transmitting a channel availability query (CAQ) request frame for the K operating ranges to a database; and receiving available channel information on the K operating ranges through a CAQ response frame from the database. | 11-13-2014 |
20140369304 | DIRECT LINK SETUP METHOD IN TUNNELED DIRECT LINK SETUP WIRELESS NETWORK AND STATION SUPPORTING THE METHOD - A Tunneled Direct Link Setup (TDLS) establishment method. The method includes associating a Basic Service Set (BSS) which includes an Access Point (AP); transmitting a TDLS setup request frame through the AP to an intended peer station, the TDLS setup request frame requesting to establish a TDLS direct link, the TDLS setup request frame including a link identifier, the link identifier including a BSSID field, a transmitter address field and a receiver address field, the BSSID field being set to a BSSID, the transmitter address field being set to a medium access control (MAC) address of the TDLS initiator, the receiver address field being set to a MAC address of the intended peer station; receiving a TDLS setup response frame including a status code field; and transmitting a TDLS setup confirm frame including the link identifier. The TDLS setup confirm frame includes high throughput operation information. | 12-18-2014 |
20150016333 | DISTRIBUTION SYSTEM CONNECTION THROUGH A STATION WORKING AS A NON-ACCESS POINT - The present invention relates to a method and device for performing a connection to a distribution system (DS) through a station working as a non-access point (AP) in a wireless communication system. In particular, any station (referred to hereinafter as ‘a first STA’) works as an AP having DS connection performance in first frequency band wireless local area network (WLAN) communication when performing WLAN communication to connect to a distribution system (DS), wherein a direct link setting procedure is performed with a specific STA (referred to hereinafter as ‘a second STA’) working as a station that is not an AP in second frequency band WLAN communication, in the second frequency band WLAN communication; and a connection is made to the DS through the direct link in the second frequency band WLAN communication. | 01-15-2015 |
20150023236 | METHOD BY WHICH STATIONS OPERATING IN POWER SAVE MODE IN WIRELESS LAN SYSTEMS TRANSMIT AND RECEIVE FRAMES, AND APPARATUS FOR SUPPORTING SAME - The present invention relates to a method by which a station (STA) which operates in power save mode in a wireless LAN system transmits and receives frames. The method includes the steps of: obtaining a channel access authority on the basis of at least one slot time, wherein each slot time is the unit time when a channel is maintained in an idle state for a channel access by the STA; transmitting a power save (PS) poll frame requesting the transmission of a buffered frame to an access point (AP); and receiving a response frame from the AP in response to the PS poll frame. The length of each slot time is set to be longer than the transmission time of the PS poll frame. | 01-22-2015 |
20150023272 | METHOD FOR TRANSMITTING DATA UNITS IN WIRELESS LAN SYSTEMS AND APPARATUS FOR SUPPORTING SAME - The present invention relates to a method for transmitting data units in wireless LAN systems. The method includes the steps of generating a short training field (STF) for a first channel, generating a long training field (LTF) for the first channel, duplicating the STF on at least one second channel, duplicating the LTF on at least one second channel, transmitting the STF and the one or more duplicated STFs through a transmission channel, transmitting the LTF and the one or more duplicated LTFs through the transmission channel, and transmitting a data field through the transmission channel. | 01-22-2015 |
20150029977 | METHOD AND APPARATUS FOR COMPRESSING MAC HEADER IN WIRELESS LAN SYSTEM - The present invention relates to a wireless communication system, and more particularly, to a method and apparatus for performing MAC header compression in a wireless communication system. In a wireless communication system according to an embodiment of the present invention, a station STA may: receive information on assigning a plurality of association identifiers (AIDs) to the station STA from an access point (AP); receive, from the AP, a first frame including a medium access control (MAC) header that includes an address field set to one of the plurality of AIDs; and assign each of the plurality of AIDs by flow for the station STA. | 01-29-2015 |
20150043409 | METHOD FOR TRANSMITTING AND RECEIVING SIGNAL OF STATION OPERABLE IN POWER SAVING MODE IN WIRELESS COMMUNICATION SYSTEM, AND DEVICE THEREFOR - One embodiment of the present invention relates to a method for transmitting a signal of a station (STA) operable in a power saving mode in a wireless communication system, and the method for transmitting a signal comprises a step of transmitting a PS-Poll frame and/or a trigger frame according to a first time period, wherein an integrated scaling factor is applied to the first time period, and the integrated scaling factor is also commonly applied to a second time period in which the STA can omit frame transmission by maintaining an association state with an access point (AP). | 02-12-2015 |
20150043459 | METHOD AND APPARATUS FOR CHANNEL ACCESS VIA NULL DATA PACKET FRAME IN WIRELESS LAN SYSTEM - The present invention relates to a wireless communication system, and more specifically to a method and an apparatus for channel access via a null data packet frame in a wireless LAN system. A method for channel access from a station (STA) in a wireless communication system according to one embodiment of the present invention comprises the steps of: receiving, from an access point (AP), configuration information for one or more slots for channel access; receiving a first frame, from the AP, from a particular slot from among the one or more slots; and starting channel access after receiving the first frame, wherein the first frame can be a null data packet (NDP) frame. | 02-12-2015 |
20150043558 | METHOD AND APPARATUS FOR CHANNEL ACCESS IN WIRELESS LAN SYSTEM - The present invention relates to a wireless communication system, and more particularly, to a method and an apparatus for accessing a channel in a wireless LAN system. According to one embodiment of the present invention, a method for performing channel access by a station (STA) of a wireless communication system comprises: a step of receiving, from an access point (AP), information about the time window which does not allow channel access of a traffic indication map (TIM) mode STA; and a step of performing channel access based on the time window. In the event that the STA is a non-TIM mode STA, the channel access is performed in the time window. In the event that the STA is a TIM mode STA, the channel access is performed in the time interval indicated by the TIM, excluding the time window. | 02-12-2015 |
20150057008 | METHOD AND APPARATUS FOR ACCESSING CHANNEL IN WLAN SYSTEM - The present invention relates to a wireless communication system, and more specifically, disclosed are a method and an apparatus for accessing a channel in a WLAN system. A method for accessing the channel from a station (STA) in the wireless communication system, according to one embodiment of the present invention, comprises the steps of: receiving from an access point (AP) setting information with respect to at least one slot allowing channel access by the STA; and beginning the channel access from a slot boundary of the at least one slot, wherein the channel access may begin without a clear channel assessment (CCA). | 02-26-2015 |
20150063232 | METHOD FOR TRANSMITTING AND RECEIVING TRAFFIC INDICATION MAPS IN WIRELESS COMMUNICATION SYSTEMS AND APPARATUS FOR SAME - The present invention relates to a method for transmitting and receiving a traffic indication map in a wireless communication system, and to an apparatus for same. More particularly, the method includes a step of transmitting a traffic indication map (TIM) to a station (STA) through a beacon frame, wherein the TIM can include a bitmap field configured of one or more sub-block bitmaps for indicating whether buffered downlink data exists for an STA which is grouped to one or more sub-blocks, and a block control field indicating an encoding scheme of the bitmap field. | 03-05-2015 |
20150063233 | METHOD FOR SETTING SERVICE PERIOD IN WIRELESS COMMUNICATION SYSTEM AND APPARATUS FOR SAME - Disclosed is a method for setting a service period (SP) of a station (STA) in a wireless communication system and an apparatus for supporting the method. More particularly, the method comprises a step of transmitting a trigger frame to an access point (AP) and starting the service period. The trigger frame may be a data frame that includes data to be transmitted to the AP or a null frame for triggering the data transmission of the AP. | 03-05-2015 |
20150071204 | METHOD AND DEVICE FOR CONTROLLING CHANNEL ACCESS IN WIRELESS LAN SYSTEM - The present invention relates to a wireless communication system and, more specifically, to a method and apparatus for controlling a channel access in a wireless LAN system. According to one embodiment of the present invention, the objective of the present invention is to provide a method for controlling a channel access in a station (STA) of the wireless communication system comprising the steps of: receiving a frame which includes a response frame indication field in a physical layer convergence protocol (PLCP) header of the frame; and deferring the channel access of the STA during a predetermined period of time which is determined on the basis of the response frame indication field. | 03-12-2015 |
20150071211 | METHOD AND APPARATUS FOR ACCESSING CHANNEL IN WLAN SYSTEM - The present invention relates to a wireless communication system, and more specifically, disclosed are a method and an apparatus for accessing a channel in a WLAN system. The method for accessing a channel from a station (STA) in a wireless communication system, according to one embodiment of the present invention, comprises the steps of: receiving from an access point (AP) a first frame including a traffic indication map (TIM) and a restricted access window (RAW) parameter set component; determining a RAW in which channel access of the STA is permitted, on the basis of the RAW parameter set (RPS) component; and transmitting a second frame to the AP from within the RAW that is determined, wherein the RAW includes at least one slot, the RPS component includes at least one RAW allocation field, each of the at least one RAW allocation field includes a RAW duration field and a slot duration field, and wherein an index of a slot which is allocated to the STA can be determined on the basis of an association identifier (AID) of the STA and the number of the slots in the RAW. | 03-12-2015 |
20150078229 | METHOD AND APPARATUS FOR TRANSCEIVING BEACON IN WIRELESS LAN SYSTEM - The present invention relates to a wireless communication system, and more specifically discloses a method and an apparatus for transceiving a beacon in a wireless LAN system. A method for receiving a beacon from a station (STA) in a wireless communication system according to one embodiment of the present invention comprises the steps of: receiving a probe response frame from an access point (AP); determining the time at which the next beacon is to be received by means of information regarding the next beacon contained in the probe response frame; and receiving the next beacon at the time determined for receiving the next beacon. | 03-19-2015 |
20150078230 | METHOD AND APPARATUS FOR ACCESSING CHANNEL IN WLAN SYSTEM - The present invention relates to a wireless communication system, and more specifically, disclosed are a method and an apparatus for accessing a channel in a WLAN system. A method for accessing the channel from a station (STA) in the wireless communication system, according to one embodiment of the present invention, comprises receiving from an access point (AP) setting information of a time window, which does not allow channel access of the STA in a traffic indication map (TIM) mode and which is repeatedly set in a cyclic manner; and carrying out the channel access on the basis of the time window, wherein the setting information includes starting point information of a specific time window and cycle information of the time window, wherein the time window is repeatedly set for every cycle that is indicated by the cycle information of the time window. | 03-19-2015 |
20150085775 | METHOD AND APPARATUS FOR CONTROLLING CHANNEL ACCESS IN WIRELESS LAN SYSTEM - The present invention relates to a wireless communication system, and a method and apparatus for controlling channel access in a wireless LAN system. The method for controlling the channel access of a station (STA) of a wireless communication system according to the present invention comprises detecting a short frame transmitted by another STA; and deferring the channel access of the STA by a predetermined length of time. The short frame is a frame that triggers a service period during which the transceiving of a plurality of data frames of the other STA is allowed. The predetermined length of time can be set to the value corresponding to the length of time ranging from the start of the service period to the point in time at which the transceiving of a first data frame from among the plurality of data frames of the other STA is completed. | 03-26-2015 |
20150085777 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING FEEDBACK TRIGGER FRAMES IN WIRELESS LAN SYSTEMS - The present invention relates to a wireless communication system and, in particular, to a method and apparatus for transmitting/receiving a feedback trigger frame in a wireless LAN system. The method for transmitting a feedback trigger frame by means of a request station (STA) in a wireless communication system according to one embodiment of the present invention includes the steps of: transmitting the feedback trigger frame including an acknowledgement (ACK) indication field to a response STA; and receiving a feedback frame from the response STA, wherein the ACK indication field can be set as a value indicating a first type associated with ACK, a second type associated with block ACK (BA), a third type associated with no ACK, or a fourth type associated with an ACK other than those of the first, second, and third types. | 03-26-2015 |
20150085780 | METHOD FOR INDICATING CHANNEL ACCESS TYPE IN WIRELESS COMMUNICATION SYSTEM, AND APPARATUS THEREFOR - The invention relates to a method for a station (STA) to perform channel access in a wireless communication system, comprising the steps of: receiving a beacon frame including a traffic indication map (TIM); a step of checking, if the TIM indicates to the STA that buffered traffic exists, information relating to a PS-poll transmission type; and a step of transmitting a PS-poll frame according to either a first type or second type of transmission indicated by the information relating to the PS-poll frame transmission type. The first type of transmission involves transmitting the PS-poll frame after performing contention, and the second type of transmission involves transmitting the PS-poll frame in the time interval set for the STA. | 03-26-2015 |
20150085849 | METHOD AND APPARATUS FOR UPDATING SYSTEM INFORMATION IN WIRELESS LAN SYSTEM - The present invention relates to a wireless communication system, and more particularly, to a method and apparatus for updating system information in a wireless LAN system. A method for a station (STA) to update system information in a wireless communication system according to one embodiment of the present invention comprises the steps of: if the value of a change sequence field received by the STA from an access point (AP) is different from the value of the change sequence field stored in the STA, transmitting, to the AP, a probe request frame including the change sequence field set to the value of the change sequence field stored in the STA; and a step of receiving, from the AP, a probe response frame responding to the probe request frame including the change sequence field. | 03-26-2015 |