Patent application number | Description | Published |
20100103894 | METHOD AND APPARATUS FOR MAPPING RESOURCE UNIT IN WIRELESS COMMUNICATION SYSTEM - A method and apparatus for mapping a resource unit in a wireless communication system is provided. The method includes obtaining a frequency partition (FP) count (FPCT), an size of FPi (FPS) for i>0, and subband (SB) count of FPi (FPSC) for i>0 (where FPi is an i | 04-29-2010 |
20100103895 | METHOD AND APPARATUS FOR MAPPING RESOURCE UNIT IN WIRELESS COMMUNICATION SYSTEM - A method and an apparatus for mapping a resource unit in a wireless communication system is provided. The method includes obtaining L | 04-29-2010 |
20100103896 | METHOD AND APPARATUS OF SUBCHANNELIZATION IN WIRELESS COMMUNICATION SYSTEM - A method and an apparatus of subchannelization is provided. The method includes receiving information indicating the number of physical resource unit (PRU) sets allocated to a subband from a base station, and mapping PRUs of a physical region to a subband PRU or a miniband PRU in a granularity of the PRU set according to the received information, wherein the subband PRU is allocated with at least one subband comprising a first number of contiguous PRUs, the miniband PRU is allocated with at least one miniband comprising a second number of PRUs, and the PRU set comprises PRUs whose number is equal to the number of PRUs included in one subband. Subchannelization can be effectively achieved while maintaining a frequency selective scheduling gain and a frequency diversity gain to the maximum extent possible. | 04-29-2010 |
20100165935 | METHOD OF MAPPING RESOURCE UNIT IN WIRELESS COMMUNICATION SYSTEM - A method and an apparatus of mapping a resource unit is provided. Physical resource units (PRUs) are divided into a plurality of PRU sets. The PRUs are mapped to a subband PRU or a miniband PRU in a granularity of the PRU set. The mapping is based on the greatest common divisor of the maximum number of PRU sets. The resource unit can be effectively mapped while maximizing a frequency diversity gain of a subband PRU and a miniband PRU. | 07-01-2010 |
20100178927 | Method For Transmitting Pilot Allocation Information To User Equipment In A Multi-User Multiple Input Multiple Output System - A method for transmitting pilot allocation information from a base station for reception by at least one of a plurality of mobile stations participating in a Multi-User Multiple Input Multiple Output (MU-MIMO) communication, the method including the steps of generating pilot allocation information for the one mobile station, and transmitting the pilot allocation information for reception by the one mobile station, wherein the pilot allocation information includes at least one of a total number K of pilot streams allocated to the plurality of mobile stations, an index k representing a first pilot stream of one or more pilot streams allocated to the one mobile station among a plurality of pilot streams defined for a pilot pattern selected for the MU-MIMO communication, a number M of the pilot streams allocated to the one mobile station, and bitmap information indicating the pilot streams allocated to the one mobile station among the plurality of pilot streams defined for the pilot pattern. | 07-15-2010 |
20100298003 | METHOD FOR TRANSMITTING PILOT ALLOCATION INFORMATION TO USER EQUIPMENT IN A MULTI-USER MULTIPLE INPUT MULTIPLE OUTPUT SYSTEM - A method for transmitting pilot allocation information from a base station for reception by at least one of a plurality of mobile stations participating in a Multi-User Multiple Input Multiple Output (MU-MIMO) communication, the method including the steps of generating pilot allocation information for the one mobile station, and transmitting the pilot allocation information for reception by the one mobile station, wherein the pilot allocation information includes at least one of a total number K of pilot streams allocated to the plurality of mobile stations, an index k representing a first pilot stream of one or more pilot streams allocated to the one mobile station among a plurality of pilot streams defined for a pilot pattern selected for the MU-MIMO communication, a number M of the pilot streams allocated to the one mobile station, and bitmap information indicating the pilot streams allocated to the one mobile station among the plurality of pilot streams defined for the pilot pattern. | 11-25-2010 |
20120039272 | METHOD AND USER EQUIPMENT FOR TRANSMITTING RANGING SIGNAL, AND METHOD AND BASE STATION FOR RECEIVING RANGING SIGNAL - A method and apparatus for transmitting a ranging signal, and a method and apparatus for receiving the ranging signal are disclosed. A ranging channel (RCH) for transmission of a ranging signal is allocated to the reuse-1 partition. However, the ranging channel (RCH) is allocated to the power-boosted reuse-3 partition only when there is no reuse-1 partition. | 02-16-2012 |
20120094687 | METHOD AND BASE STATION FOR TRANSMITTING LOCATION MEASUREMENT REFERENCE SIGNAL, AND METHOD AND USER EQUIPMENT FOR RECEIVING LOCATION MEASUREMENT REFERENCE SIGNAL - A method and a base station (BS) for transmitting a location measurement reference signal, and a method and a user equipment (UE) for receiving a location measurement reference signal are disclosed. The UE and the BS determine a transmission time of D-LBS zone configuration information configured to transmit an LBS location beacon on the basis of an S-SFH change cycle. In addition, the UE and the BS determine a transmission start point of the D-LBS zone transmitted according to the configuration information, using the transmission time of the configuration information. | 04-19-2012 |
20120176975 | METHOD AND APPARATUS FOR TRANSMITTING OR RECEIVING SYSTEM INFORMATION IN WIRELESS COMMUNICATION SYSTEM - A method for receiving system information by a User Equipment (UE) in a wireless communication system is provided. In the method, the UE receives a message including information associated with allocation of a downlink resource from a base station and receives a message including changed system information through the allocated downlink resource according to the received information associated with allocation of the downlink resource. | 07-12-2012 |
20120207237 | WIRELESS COMMUNICATION SYSTEM USING PILOT SUBCARRIER ALLOCATION - A method of transmitting pilot signals by a transmitter in a multiple-input multiple-output (MIMO) antenna system using an orthogonal frequency division multiplexing (OFDM) scheme includes allocating pilot subcarrier locations within a resource block including OFDM symbols in a time domain and subcarriers in a frequency domain based on variables of ‘18k’, ‘9mi’ and ‘floor (ns/2)’, wherein ‘k’ indicates a subchannel index, ‘ns’ indicates a symbol index, ‘mi’ corresponds to ‘(ns+i)mod 2’, ‘i’ indicates an antenna index, wherein ‘floor (n)’ denotes a greatest integer that is not greater than ‘n’; and transmitting the pilot signals to a receiver based on the allocated pilot subcarrier locations. | 08-16-2012 |
20130003694 | METHOD FOR TRANSMITTING PILOT SIGNAL FOR MACHINE TO MACHINE COMMUNICATION IN WIRELESS COMMUNICATION SYSTEM AND APPARATUS THEREOF - A method for transmitting a pilot signal for machine to machine (M2M) communication in a wireless communication system and an apparatus thereof are disclosed. The method comprises the steps of configuring a basic unit including a plurality of pilot resource elements (REs) and data resource elements; allocating pilot signal to the plurality of pilot resource elements to the basic unit; and transmitting the basic unit to a receiver in a subframe unit in accordance with a rule which is previously defined, wherein the resource elements are time-frequency resources defined by one symbol index and one subcarrier index, and the basic unit is transmitted at a subframe except for a subframe at which a control channel is transmitted. | 01-03-2013 |
20130208694 | METHOD AND APPARATUS FOR PERFORMING NETWORK ENTRY/REENTRY IN WIRELESS COMMUNICATION SYSTEM - Disclosed is a method in which a machine-to-machine (M2M) device and a base station in a wireless communication system perform network reentry comprises the steps of: receiving, from a base station, information related to an uplink resource for the transmission of a ranging request message; and transmitting the ranging request message to the base station on the basis of the received information related to the uplink resource. | 08-15-2013 |
20130343323 | METHOD AND DEVICE FOR ALLOCATING GROUP RESOURCES FOR M2M DEVICE IN WIRELESS COMMUNICATION SYSTEM - The present invention relates to wireless communication, and more specifically, to a method and a device for allocating group resources for a M2M device to which machine to machine (M2M) communication is applied in a wireless communication system. A method for allowing a machine to machine (M2M) device to be allocated with resources with resources in a wireless communication system comprises the steps of: receiving first information for identifying said M2M device from a base station; receiving, from said base station, group resource allocations, second information for identifying a first group to which said M2M device belongs, and third information for identifying said M2M device within said first group; and determining first group resource allocations corresponding to said second information from said group resource allocations, without using said first information, and then transmitting first data by using resource allocations corresponding to said third information from said first group resource allocations. | 12-26-2013 |
20140029539 | METHOD AND APPARATUS FOR PERFORMING RANGING AT M2M DEVICE IN A WIRELESS COMMUNICATION SYSTEM - A method and apparatus for performing ranging at a Machine to Machine (M2M) device in a wireless communication system are disclosed. The method includes receiving a Primary SuperFrame Header (P-SFH) and a Secondary SuperFrame Header (S-SFH), receiving an Advanced Air Interface-System Configuration Descriptor (AAI-SCD) message, and performing dedicated ranging using M2M dedicated ranging information included in the AAI-SCD message, wherein first count information included in the S-SFH is increased whenever the M2M dedicated ranging information are changed, wherein information indicating a change in the S-SFH, included in the P-SFH are not changed by update of the first count information. | 01-30-2014 |
20140029566 | METHOD AND APPARATUS FOR PERFORMING RANGING AT M2M DEVICE IN A WIRELESS COMMUNICATION SYSTEM - A method and apparatus for performing ranging at a Machine to Machine (M2M) device in a wireless communication system are disclosed. The method includes receiving an Advanced Air Interface-System Configuration Descriptor (AAI-SCD) message including a M2M ranging indicator indicating M2M ranging configuration, and performing ranging according to the M2M ranging configuration, if the M2M ranging configuration does not prohibit network reentry wherein the M2M ranging configuration is one of normal ranging, M2M dedicated ranging, and M2M network reentry prohibition. | 01-30-2014 |
20140098667 | METHOD AND APPARATUS FOR RANGING TRANSMISSION BY MOBILE STATION IN WIRELESS COMMUNICATION SYSTEM - Disclosed is a ranging transmission method comprising: a mobile station receiving a message including backoff window information from a base station; and the mobile station performing ranging transmission on the basis of the backoff window information, wherein the backoff window information comprises information indicating a size K | 04-10-2014 |
20140105183 | METHOD AND APPARATUS FOR PERFORMING NETWORK REENTRY IN WIRELESS COMMUNICATION SYSTEM - A method for performing network reentry by a Machine to Machine (M2M) device in a wireless communication system is provided. In the method, the M2M device receives information associated with an uplink resource for transmitting a ranging request message from a base station and transmits the ranging request message to the base station based on the received information associated with the uplink resource. The information associated with the uplink resource is masked with a random access identifier (RA-ID) and the RA-ID includes an indicator that indicates an M2M device dedicated ranging channel. | 04-17-2014 |
20140126477 | METHOD AND APPARATUS FOR RANGING TRANSMISSION BY MOBILE STATION IN WIRELESS COMMUNICATION SYSTEM - Disclosed is a ranging transmission method comprising: a mobile station receiving a message including backoff window information from a base station; the mobile station determining an x-th backoff window for an x-th (x is a non-negative integer) ranging transmission using the backoff window information; the mobile station performing the x-th ranging transmission to the base station within the x-th backoff window; and the mobile station determining a start point of an (x+1)th backoff window on the basis of an end point of the x-th backoff window. | 05-08-2014 |
20140128051 | METHOD AND APPARATUS FOR RANGING TRANSMISSION BY MOBILE STATION IN WIRELESS COMMUNICATION SYSTEM - Disclosed is a ranging transmission method comprising: a mobile station receiving a message including backoff window information from a base station; and the mobile station performing ranging transmission on the basis of the backoff window information, wherein the message includes a ranging backoff window indicator indicating an increase or decrease in a backoff window size for ranging retransmission. | 05-08-2014 |
20140140296 | PRIORITY-BASED DATA TRANSMISSION METHOD IN A PEER-TO-PEER COMMUNICATION SYSTEM - The present invention relates to a wireless access system, and more particularly, to methods for transceiving data in a peer-to-peer (P2P) communication system, and to apparatuses for supporting the methods. According to one embodiment of the present invention, a method for transmitting data from a first device, which is a peer device in a P2P communication system, comprises the steps of: receiving an acknowledgement signal broadcast from a second device; comparing the priority of a P2P communication link of the second device and the priority of a P2P communication link of the first device on the basis of a resource region in which the acknowledgement signal is broadcast; and determining, by the first device on the basis of the first priority, whether or not to transmit the data or make a concession to data transmission. | 05-22-2014 |
20140146767 | METHOD AND APPARATUS FOR TRANSMITTING M2M RANGING INFORMATION IN A WIRELESS COMMUNICATION SYSTEM - A method for transmitting Machine to Machine (M2M) ranging information in a wireless communication system is disclosed. The method includes transmitting an Uplink Channel Descriptor (UCD) including an M2M ranging region Type/Length/Value (TLV). When the UCD is transmitted, a ranging region TLV identifying the same region as the M2M ranging region TLV is included in the UCD. | 05-29-2014 |
20140146772 | WIRELESS COMMUNICATION SYSTEM USING PILOT SUBCARRIER ALLOCATION - A wireless communication system using pilot subcarrier allocation and a method of allocating the pilot subcarriers for use in downlink and uplink communication in a multiple-input multiple-output (MIMO) antenna system using orthogonal frequency division multiplexing (OFDM) modulation are disclosed. The method includes providing a frame structure comprising OFDM symbols in time domain and subcarriers in frequency domain and alternately allocating first pilot subcarriers for a first antenna and second pilot subcarriers for a second antenna in the time and frequency domains, wherein each of the alternating first pilot subcarriers and the second pilot subcarriers is separated by a multiple of 9 subcarriers in the frequency domain and further allocated in two contiguous OFDM symbols. | 05-29-2014 |
20140153518 | METHOD AND APPARATUS FOR TRANSMITTING M2M RANGING INFORMATION IN A WIRELESS COMMUNICATION SYSTEM - A method for transmitting Machine to Machine (M2M) ranging information in a wireless communication system is disclosed. The method includes transmitting an M2M ranging allocation UL MAP extended Information Element (IE) including M2M ranging region information. When the M2M ranging allocation UL MAP extended IE is transmitted, an UL MAP IE with the same region as the M2M ranging allocation UL MAP extended IE is transmitted and an Uplink Interval Usage Code of the UL MAP IE is 12. | 06-05-2014 |
20140206408 | METHOD AND APPARATUS FOR SUPPORTING GROUP DELEGATOR IN WIRELESS CONNECTION SYSTEM SUPPORTING MACHINE-TO-MACHINE COMMUNICATION - The present invention provides various methods and an apparatuses for supporting a group delegator (GD) in a wireless access system supporting Machine to Machine (M2M) communication. A method for selecting the group delegator (GD) in a wireless access system supporting the Machine to Machine (M2M) communication, according to one embodiment of the present invention, comprises the steps of: an M2M device belonging to an M2M group receiving a broadcasting message including a first critical value, which is used for selecting the GD; an M2M device generating a first random value, which is used for selecting the GD; and selecting the GD by comparing the first critical value and the first random value. | 07-24-2014 |
20140286279 | METHOD AND DEVICE FOR TRANSMITTING AND RECEIVING SYSTEM INFORMATION FROM A SYSTEM SUPPORTING MACHINE-TO-MACHINE COMMUNICATION - The present invention relates to various methods and devices that receive and update system information that is used for machine-to-machine (M2M) communication in a wireless connection system supporting the machine-to-machine communication. As an embodiment of the present invention, the method of receiving system information on an M2M instrument from the wireless connection system supporting the M2M may include: receiving, at the M2M instrument, a first secondary superframe header subpacket (S-SFH SP 3) 3 message that includes information on a transmission period during which a second S-SFH SP 3 message including M2M-dedicated ranging information is transmitted; receiving, at the M2M instrument, the second S-SFH SP 3 message on the basis of the transmission period information; and receiving, at the M2M instrument, a system configuration descriptor message that includes updated system information, when the M2M-dedicated ranging information in the second S-SFH SP 3 shows that system information on M2M is updated. | 09-25-2014 |
20140314039 | METHOD FOR REQUESTING DEVICE-TO-DEVICE COMMUNICATION IN WIRELESS ACCESS SYSTEM AND APPARATUS FOR SAME - Disclosed are a method for requesting device-to-device communication in a wireless access system that supports device-to-device communication and an apparatus for the method. More particularly, the method comprises the steps of: receiving, from a first device, request information for requesting device-to-device communication with a second device; transmitting, to the second device, check information to inquire whether to accept device-to-device communication with the first device; receiving, from the second device, response information indicating that device-to-device communication is accepted; and, if the second device has accepted the device-to-device, transmitting resource allocation information for device-to-device communication to the first device and the second device. | 10-23-2014 |
20140321452 | METHOD FOR SUPPORTING DEVICE TO DEVICE SYNCHRONIZATION AND IDENTIFICATION IN WIRELESS ACCESS SYSTEM THAT SUPPORTS DEVICE TO DEVICE COMMUNICATION - The present invention relates to methods for efficiently performing device to device synchronization and device identification in a device to device communication system, and devices for supporting the methods. The method for supporting device to device synchronization and identification in a wireless access system that supports device to device communication according to one embodiment of the present invention comprises the steps of: allowing a first device to broadcast a RACH signal for device to device synchronization in a peer discovery section; allowing the first device to receive a first response message transmitted from a second device as a response to the RACH signal; and transmitting a message including device identification information for the first device to the second device. | 10-30-2014 |
20140355483 | DEFINITION OF NEW IDENTIFIER IN WIRELESS ACCESS SYSTEM THAT SUPPORTS DEVICE TO DEVICE COMMUNICATION, AND TRANSMISSION METHOD AND DEVICE USING SAME - The present invention provides definition of an identifier which is required for recognizing information essential for device to device communication, a transmission method thereof, and devices that support the same. The method for supporting device to device (D2D) communication in a wireless access system that supports D2D communication as one embodiment of the present invention comprises the steps of allowing a first D2D device to receive, from a base station, a broadcast message which contains a common D2D identifier (C-D2D-RNTI) for all D2D devices that perform D2D communication; and allowing the first D2D device to receive the transmitted D2D-related information by using the C-D2D-RNTI. In this situation, the wireless access system can support both D2D communication and cellular communication for a normal terminal instead of the D2D device. | 12-04-2014 |
20140362795 | METHOD OF RETRANSMITTING DATA IN A WIRELESS CONNECTION SYSTEM SUPPORTING MACHINE-TO-MACHINE COMMUNICATION, AND DEVICE FOR SUPPORTING SAME - The present invention relates to a wireless connection system, and in particular, relates to methods of retransmitting data in a machine-to-machine communication system, methods of managing the data, and devices for supporting machine-to-machine communication. As one aspect of the present invention, the method of retransmitting data in the wireless connection system supporting the machine-to-machine communication may include: allocating a data slot for retransmitting data from a first machine, from among two or more peer machines, by transmitting a transmit request message to a second machine; receiving a transmit response message transmitted form the second machine in response to the transmit request message; and retransmitting data to the second machine through the allocated data slot. | 12-11-2014 |
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 |
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 |
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 |
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 |
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 |
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 |
20150092763 | METHOD FOR TRANSMITTING AND RECEIVING TRAFFIC INDICATION MAP IN WIRELESS COMMUNICATION SYSTEM AND DEVICE THEREFOR - Disclosed are a method for transmitting and receiving a traffic indication map (TIM) in a wireless communication system and a device for supporting the same. More particularly, the method for transmitting a traffic indication map comprises the step of transmitting a TIM to a STA through a beacon frame, wherein the TIM includes: a block bitmap field for indicating a subblock including a STA in which buffered downlink data exists for respective N (N are two or more natural numbers) blocks; and a block control field for indicating an encoding method for the bitmap field. | 04-02-2015 |
20150098447 | METHOD AND DEVICE FOR SELECTIVE DECODING OF BEACON FRAME IN WIRELESS LAN SYSTEM - The present invention relates to a wireless communication system, and more particularly, to a method and device for performing or supporting selective decoding of a beacon frame in a wireless LAN system. A method of decoding a frame by a station STA in a wireless communication system according to an embodiment of the present invention may include: determining whether to decode each of a first data portion and a second data portion of the frame; and decoding one or more of the first data portion and the second data portion if it is determined that the decoding is performed. Hence, the frame may further include information that is used for the determination by the station STA on whether to decode each of the first data portion and the second data portion, and whether to decode may be determined on the basis of whether to change one or more of the first data portion and the second data portion. | 04-09-2015 |
20150124784 | CHANNEL ACCESS METHOD IN WIRELESS COMMUNICATION SYSTEM AND APPARATUS FOR SAME - One embodiment of the present invention is a method for performing channel access using a first station (STA) in a wireless communication system, comprising: a step of receiving a traffic indication map (TIM) bitmap; and a step of attempting channel access for a wireless medium in a first time period indicated by the first TIM bitmap. The first STA attempts channel access for the wireless medium in a third time period which is one of the second time periods indicated by the TIM bitmap in the event that the first STA senses an operation of a second STA relating to the wireless medium in the first time period. | 05-07-2015 |
20150156722 | METHOD AND DEVICE FOR ACCESSING CHANNEL IN WIRELESS LAN SYSTEM - According to one embodiment of the present invention, a method for performing a channel access by a station (STA) in a wireless communication system comprises the steps of: transmitting a first frame for a channel access request to an access point (AP); and receiving a second frame, which is a response to the channel access request, from the AP, wherein the first frame includes information indicating whether or not uplink data of the STA is present. | 06-04-2015 |
20150189577 | METHOD FOR SETTING UP HIGH-SPEED LINK IN WLAN SYSTEM AND DEVICE FOR SAME - The present invention relates to a wireless communication system, and more specifically, to a method for setting up a high-speed link in a WLAN system and a device for the same. A method for setting up a high-speed link by a station (STA) in a WLAN system, according to one embodiment of the present invention, can comprise the steps of: transmitting a frame including identification information and/or fragment identification information of a previous access point (AP) from the STA to a current AP; and receiving Generic Advertisement Service (GAS) query response information from the current AP, wherein when the identification information of the previous AP is included in the frame, the GAS query response information can be acquired by the current AP from the previous AP. | 07-02-2015 |
20150215867 | METHOD AND APPARATUS FOR UPDATING LISTEN INTERVAL IN WIRELESS LAN SYSTEM - Disclosed are a method and an apparatus for updating a listen interval in a wireless communication system. To this end, a method for updating a listen interval by a station (STA) of a wireless communication system may comprise, if an operation mode of the station is changed, a request frame including information indicating that the operation mode of the station is changed, to an access point (AP); and receiving a response frame in response to the request frame from the AP. If a value of a listen interval of the station is changed as the operation mode of the station is changed, the request frame further include a value of a new listen interval of the station. | 07-30-2015 |
20150223081 | METHOD FOR RECEIVING DOWNLINK SIGNAL BY STATION IN WIRELESS COMMUNICATION SYSTEM - The invention relates to a method for receiving a downlink signal from an access point (AP) by a station (STA) in a wireless communication system, comprising the steps of: transmitting an uplink frame; and receiving a response frame as a response to the uplink frame. A terminal performs a re-association with the AP when it is recognized, via the response frame, that the AP has been restarted. | 08-06-2015 |
20150230244 | METHOD AND DEVICE FOR TRANSMITTING AND RECEIVING TRAFFIC INDICATION MAP IN WIRELESS LAN SYSTEM - The present invention relates to a wireless communication system and, more specifically, to a method and a device for transmitting and receiving a traffic indication map (TIM) in a wireless LAN system. The method by which a station (STA) receives a TIM element in a wireless LAN system, according to one embodiment of the present invention, comprises the steps of: receiving a frame that includes the TIM element from an access point (AP); and decoding a partial virtual bitmap included in the TIM element, wherein one block of the partial virtual bitmap includes one or more association identifier difference value (ΔAID) fields, and a field subsequent to the one or more ΔAID fields can indicate an end of the one block. | 08-13-2015 |
20150230245 | METHOD AND APPARATUS FOR GAINING ACCESS IN WIRELESS LAN SYSTEM - A method for gaining access according to one embodiment of the present invention in which a station (STA) gains access to a medium in wireless communication system comprises the steps of: sensing a carrier wave for a medium so as to transmit a set frame; and, if the medium is busy, executing a random back-off procedure, wherein the starting point of the random back-off procedure is indicated by a second parameter randomly selected from within a range in accordance with a first parameter. | 08-13-2015 |
20150237623 | METHOD AND DEVICE FOR PERFORMING CHANNEL ACCESS IN WLAN SYSTEM - One embodiment of the present invention relates to a method whereby a station (STA) which is irrelevant to a multi user (MU) group performs channel access in a wireless communication system, the method for performing channel access comprising the steps of: receiving a resource allocation frame; and checking a group indicator field comprised in the resource allocation frame, wherein the STA determines a slot start offset through the first bit of a slot allocation field for the MU group in case the group indicator field indicates the presence of the slot allocation field for the MU group in the resource allocation frame. | 08-20-2015 |
20150245282 | METHOD AND DEVICE FOR UPDATING SYSTEM INFORMATION IN WIRELESS LAN SYSTEM - The present invention relates to a method and a device for updating system information in a wireless LAN system. A method for updating system information in a station (STA) of a wireless communication system may comprise transmitting, by the STA which stores system information and a configuration change count value of a previously linked preferred access point (AP), a probe request frame for active scanning to the preferred AP; and receiving a probe response frame from the preferred AP. Preferably, the probe request frame includes a configuration change count field previously acquired from the preferred AP, and if a value of the configuration change count field included in the probe request frame is different from a present configuration change count value of the preferred AP, the probe response frame may include one or more elements of system information which should be updated by the STA. | 08-27-2015 |
20150271850 | METHOD AND APPARATUS FOR TRANSMITTING SIGNAL IN WIRELESS LAN SYSTEM - Disclosed is a method for transmitting a signal of an access point (AP), comprising the steps of receiving a first frame from a first STA; and transmitting a second frame including a response to the first frame to the first STA, wherein the second frame induces the transmission of a third frame for the first STA to make the second STA set a network allocation vector (NAV), and the second STA is an STA unable to sense the AP. | 09-24-2015 |
20150282157 | METHOD AND DEVICE FOR UPDATING SYSTEM INFORMATION IN WIRELESS LAN SYSTEM - The present invention relates to a wireless communication system and, more specifically, to a method and a device for updating system information in a wireless LAN system. The method for updating system information in a station (STA) of a wireless communication system, according to one embodiment of the present invention, comprising: allowing the STA to transmit, to an access point (AP), a probe request frame that includes a change sequence field which is set to a value of a change sequence field stored in the STA, if a value of a change sequence field received from the AP is different from the value of the change sequence field stored in the STA; and allowing the STA to receive, from the AP, a probe response frame which responds to the probe request frame that includes the change sequence field, wherein the probe request frame is a short probe request frame. | 10-01-2015 |
20150334592 | 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 a step of transmitting a power save-poll (PS-poll) for channel accessing from a listening interval to an access point, wherein the station operates in a non-traffic indication map (TIM) mode which is not limited by a TIM element that is transmitted from the access point, and wherein the time of transmission of the PS-poll is not limited by the TIM element. | 11-19-2015 |
20150334742 | METHOD AND DEVICE FOR RESTRICTED ACCESS WINDOW-BASED CHANNEL ACCESS IN WLAN SYSTEM - The present invention relates to a wireless communication system. More particularly, a method and a device for restricted access window-based channel access in a WLAN system are disclosed. The method whereby a station (STA) performs channel access in a wireless communication system according to one embodiment of the present invention may comprise the steps of: receiving restricted access window (RAW) cross-border transmission allowance (CBTA) information from an access point (AP) in case an RAW is allocated to the STA; and performing transmission by the STA on the basis of the RAW CBTA information. In case the RAW CBTA information is configured as a first value, transmission by the STA beyond the border of the RAW may be allowed. | 11-19-2015 |