CHANNEL ESTIMATION USING MULTIPLE AP

    公开(公告)号:US20220140987A1

    公开(公告)日:2022-05-05

    申请号:US17435508

    申请日:2020-02-27

    Abstract: In a wireless local area network system, a sharing access point (AP) may determine a long training field (LTF) subcarrier pattern for each of multiple streams, wherein an LTF symbol is used for at least one stream among a first to a third stream, the number of the LTF symbols is determined on the basis of the number of antennas of a shared AP having the maximum number of antennas among multiple shared APs associated with the sharing AP, and the first to the third stream are assigned different subcarrier patterns. The sharing AP may transmit information associated with the LTF subcarrier pattern.

    Method for transmitting or receiving frame in wireless LAN and apparatus therefor

    公开(公告)号:US11184854B2

    公开(公告)日:2021-11-23

    申请号:US16760824

    申请日:2018-11-01

    Abstract: A method for an STA for receiving a WUR frame in a WLAN, according to one embodiment of the present invention, comprises the steps of: receiving a WUR frame including a first portion of a TSF timer and an MIC value; calculating an MIC verification value on the basis of the first portion of the TSF timer and the TSF timer stored in the STA; and determining whether to discard the received WUR frame depending on whether the MIC value included in the WUR frame matches the calculated MIC verification value, wherein the first portion of the TSF timer included in the WUR frame is the 8-bits following the least significant N-bit in the TSF timer, and the STA may obtain a continuous 48-bit partial TSF timer value through the first portion of the TSF timer and a second portion of the TSF timer stored in the STA, and may calculate the MIC verification value on the basis of the obtained 48-bit partial TSF timer value.

    Method for transmitting frame in wireless LAN system, and wireless terminal using same

    公开(公告)号:US10932292B2

    公开(公告)日:2021-02-23

    申请号:US16304669

    申请日:2017-05-17

    Abstract: A method for transmitting a frame in a wireless LAN system according to an embodiment of the present specification comprises a step of transmitting, by a wireless terminal, a trigger frame including identification information for a plurality of user STAs and resource information indicating resource units separately allocated to the plurality of user STAs, wherein, when the trigger frame is an MU RTS frame, the resource information is configured: on the basis of first to fourth index values in a fourth index range in order to indicate a primary 20 MHz channel through which a CTS frame, a response to the MU RTS frame, is to be transmitted; on the basis of fifth and sixth index values in a fifth index range in order to indicate a primary 40 MHz channel through which the CTS frame is to be transmitted; and on the basis of a seventh index value in a sixth index range in order to indicate a primary 80 MHz channel through which the CTS frame is to be transmitted.

    Method for operating wake-up receiver in wireless LAN system and apparatus therefor

    公开(公告)号:US10912021B2

    公开(公告)日:2021-02-02

    申请号:US16337902

    申请日:2017-09-25

    Abstract: A method by which a station (STA) operates in a wake up receiver (WUR) mode in a wireless LAN (WLAN) system, according to one embodiment of the present invention, comprises the steps of: entering into the WUR mode by turning off a WLAN transceiver of the STA and turning on a WUR receiver of the STA; starting a timer by entering into the WUR mode; and turning on the WLAN transceiver of the STA when the timer is completed or a wake-up signal for waking up the STA is detected through the WUR receiver, wherein the timer can indicate the remaining time for which the STA can maintain the WUR mode until the STA receives a predetermined WUR signal for confirming the presence of an associated access point (AP).

    Method for frame transmitted on basis of random access in wireless LAN system and wireless terminal using same

    公开(公告)号:US10764921B2

    公开(公告)日:2020-09-01

    申请号:US16094192

    申请日:2017-04-17

    Abstract: A method for a frame transmitted on the basis of random access in a wireless LAN system according to the present embodiment comprises the steps of: receiving, by a user STA, a trigger frame from an AP, the trigger frame including identification information for random access and resource information indicating a random access resource unit corresponding to the identification information; performing a countdown operation for the random access resource unit by the user STA; and transmitting, by the user STA, a first uplink frame to the AP on the basis of the random access resource unit obtained through the countdown operation, the first uplink frame including buffer status information associated with traffic buffered in the user STA, wherein the first uplink frame is a frame requesting the AP for transmission of a response.

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