Abstract:
The present invention relates to a wireless communication system, and more specifically, disclosed are a method and an apparatus for transreceiving operating channel information. A method for providing an operating parameter of a station, which operates in a whitespace band, according to the present invention, comprises the steps of: transmitting a frame comprising an operation information field including a channel width subfield; and transmitting a signal (SIG) field of a physical layer convergence procedure (PLCP) protocol data unit (PPDU) preamble, wherein the SIG field comprises a bandwidth (BW) field, and wherein the type of the PPDU can be determined on the basis of the channel width subfield and the BW field.
Abstract:
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 RPS component includes at least one RAW allocation field, and each of the at least one RAW allocation fields can include a RAW group field, a RAW starting point field, and a RAW duration field.
Abstract:
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.
Abstract:
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.
Abstract:
The present invention relates to a wireless communication system, and more specifically, to a method and apparatus for accessing channels in a wireless LAN system. The method for accessing channels in a station (STA) of the wireless communication system according to one embodiment of the present invention comprises the steps of transmitting a first frame of a channel access request to an access point (AP); and receiving, from the AP, a second frame related to whether access to the channel is allowed in response to the first frame, wherein the second frame can include a value for a channel access start offset with respect to the STA.
Abstract:
Provided is a method for transmitting a data unit performed by a transmitter in a wireless LAN system. The method comprises: generating a data unit, wherein the data unit includes a data field which contains data to be transmitted by a transmitter; generating at least one data symbol for the data field; and transmitting the at least one data symbol, wherein two pilot tones are inserted into each data symbol, and pilot values and scrambling values are applied to the pilot tones.
Abstract:
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 RPS component includes at least one RAW indication field, each of the at least one RAW allocation fields further includes information related to transmitting a third frame, which includes information on slot allocation, and wherein the third frame can be received by the STA from the AP at a specific time/location in accordance with the information related to transmitting the third frame.
Abstract:
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.
Abstract:
The present invention relates to a method and apparatus for performing wireless communication, and includes: transmitting a channel scheduling request frame for querying scheduling information to a database device, the scheduling information being on one or more channels the enabling station wants to query, receiving a channel scheduling response frame including a channel number field and a channel availability duration field from the database device, the channel scheduling response frame not including information on from when a channel identified by the channel number field is available for operation, the channel availability duration field indicating a duration of time during which the channel identified by the channel number field is available for operation, and taking the specific time receiving the channel scheduling response frame as a starting time of channel availability of the channel identified by the channel number field of the channel scheduling response frame.
Abstract:
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.