Patent application number | Description | Published |
20150181507 | METHOD AND APPARATUS FOR SCANNING IN WIRELESS LAN - A method and an apparatus for scanning in a wireless LAN are disclosed. The method for scanning in a wireless LAN comprises the steps of: enabling a station (STA) to receive, from a first access point (AP) operated in a first channel, a detection frame comprising identifier information of a second AP operated in a second channel and beacon frame transmission time information of the second AP, and enabling the STA to scan a beacon frame of the second AP on the basis of the beacon frame transmission time information of the second AP. Thus, the present invention can rapidly perform a scanning operation. | 06-25-2015 |
20150208330 | SCANNING METHOD AND APPARATUS IN WIRELESS LAN - A scanning method and apparatus in wireless LAN is disclosed. The method comprises determining, by an access point (AP), whether to accommodate a station (STA) conducting an initial link setup and transmitting, by the AP, a frame to the STA, the frame including scanning redirection information for the STA to switch other channel, other band, or a neighbor AP when the AP determines not to accommodate the STA. The scanning redirection information includes a band field and a channel field. The band field indicating a band in which the STA conducts the initial link setup when the STA conducts the initial link setup from current band to the other band. The channel field indicating a channel in which the STA conducts the initial link setup when the STA conducts the initial link setup from current channel to the other channel. | 07-23-2015 |
20150208444 | METHOD AND APPARATUS FOR ACCESSING CHANNEL IN WIRELESS LAN - Disclosed are a method and an apparatus for accessing a channel in a wireless LAN. A method for a station (STA) initially accessing the channel in the wireless LAN comprises the steps of: the STA receiving from an access point (AP) a frame including channel state information and a set of an N (a natural number wherein N>1) number of access parameter sets; the STA selecting a random variable when the channel state information indicates that a wireless link is busy; the STA selecting one access parameter set from the N number of access parameter sets on the basis of the one access parameter and transmitting an association request frame to the AP. | 07-23-2015 |
20150222447 | METHOD AND APPARATUS FOR SCANNING IN WIRELESS LAN - Disclosed are a method and an apparatus for scanning in a wireless LAN. A method for scanning by a station (STA) can comprise the steps of: the STA generating a MAC layer management entity (MLME).SCAN.request.primitive comprising information for a basic service set identifier (BSSID) and a service set identifier (SSID); the STA generating a probe request frame comprising wildcard BSSID and SSID; the STA multi-casting the probe request frame to a first AP forming an extended service set (ESS) network using a particular SSID; and the STA receiving a probe response frame broadcast from the first AP as a response to the probe request frame. | 08-06-2015 |
20150230093 | METHOD AND APPARATUS FOR ACCESSING INITIAL CHANNEL IN WIRELESS LAN - A method for accessing an initial channel by a STA can comprise the steps of: the STA receiving, via a first band from a multiband AP, a scanning frame comprising a neighboring AP information element, wherein the neighboring AP information element comprises information for a second band which is an operating band for the neighboring AP; the STA determining whether accessing the neighboring AP is possible on the basis of information comprised in the neighboring AP information element regarding an access network type of the neighboring AP operating in the second band; if access to the neighboring AP is possible, the STA transmitting an association request frame to the neighboring AP via the second band, wherein the access network type can comprise information regarding an access permission type of a neighboring AP. | 08-13-2015 |
20150230161 | METHOD AND APPARATUS FOR SCANNING IN A WIRELESS LAN - Disclosed are a method and an apparatus for scanning in a wireless LAN. The method may comprise the following steps: an STA determining identifier information of an AP to be included in a probe request frame as a wildcard SSID and a wildcard BSSID, based on a first MLME; the STA receiving from the AP a frame including information on the BSSID of the AP and the SSID of the AP before a probe delay time expires; the STA determining wither the AP is a target AP based on the BSSID and the SSID; the STA redetermining the identifier information of the AP to be included in the probe request frame based on the BSSID and the SSID, when the AP is the target AP; and the STA unicasting a probe request frame that is re-determined based on the BSSID and the SSID. | 08-13-2015 |
20150230162 | METHOD AND APPARATUS FOR SCANNING IN WIRELESS LAN - A method for scanning by a STA can comprise the steps of: the STA unicasting a probe request frame to a target AP from a first channel, the target AP having been determined in accordance with a BSSID comprised in a primitive; the STA processing an ACK transmitted via the first channel within a first ACK transmission time, and determining whether the first ACK for the probe request frame is received; if the first ACK is received within the first ACK transmission time, then the STA monitoring a probe response frame, which is a response to the probe request frame from the first channel; and if the first ACK is not received within the first ACK transmission time, then regardless of a CCA level detected during the first ACK transmission time, the STA switching the scanning channel. | 08-13-2015 |
20150237568 | METHOD AND APPARATUS FOR TRANSMITTING BACKHAUL LINK INFORMATION - Disclosed are a method and an apparatus for transmitting backhaul link information. A method for acquiring backhaul link state information for a station (STA) may comprise the steps of: an STA transmitting, to an access point (AP), a generic advertisement service (GAS) request frame requesting a backhaul link state information of the AP; the STA receiving, as a response to the GAS request frame, a GAS response frame comprising backhaul link state information, wherein the GAS request frame is a frame transmitted by an STA, before an authentication or an association procedure and after a scanning procedure of the AP, to request availability-related information of a network to be accessed by the STA, and the backhaul link state information can comprise information regarding the load of a backhaul link linking network apparatuses other the AP and the STA. | 08-20-2015 |
20150245283 | METHOD AND APPARATUS FOR ACTIVE SCANNING IN WIRELESS LAN - Disclosed are a method and an apparatus for active scanning in a WLAN. In the method for active scanning in the WLAN, a scanning STA, which has received from a different STA a first probe request frame, can start a probe timer and perform a CCA for detecting a channel state of a receiving channel. When the channel state is not busy until the probe timer reaches a minimum channel time, the scanning STA transmits to an AP from the receiving channel a second probe request frame, and when the channel state is busy until the probe timer reaches the minimum channel time and the scanning STA does not receive a probe reply frame, which includes at least the same information expected to be received based on scanning information, the scanning STA can transmit to the AP from the receiving channel the second probe request frame. | 08-27-2015 |
20150245382 | METHOD AND APPARATUS FOR ACCESSING CHANNEL IN WIRELESS LAN - Disclosed are a method and an apparatus for accessing a channel in a wireless LAN. A method for a station (STA) accessing a channel may comprise: a step of the STA receiving an access distribution element through a passive scanning frame; the STA selecting an access random variable based on the access distribution element; a step of the STA determining a minimum value of a passive scanning-specific competition window based on the access random variable; and the STA accessing the channel based on a backoff time that is determined based on the passive scanning-specific competition window. | 08-27-2015 |