MECHANISMS OF VIRTUAL CLEAR CHANNEL ASSESSMENT FOR WI-FI DEVICES

    公开(公告)号:US20190230533A1

    公开(公告)日:2019-07-25

    申请号:US16217889

    申请日:2018-12-12

    Abstract: Described are methods and devices for increasing the efficiency of Wi-Fi networks by increased spatial reuse, which refers to sharing the same wireless spectral resources over different spatial regions. A described technique for doing this is for a Wi-Fi device to increase the threshold of the clear channel assessment (CCA) so as to ignore and regard as interference the transmissions from other devices. The sensing range of the Wi-Fi device then decreases, and the spatial resource can be reused by different Wi-Fi devices in different spatial locations.

    Systems and methods for scheduling wireless communication

    公开(公告)号:US10321479B2

    公开(公告)日:2019-06-11

    申请号:US15668191

    申请日:2017-08-03

    Abstract: Provided are systems and methods for a network station receiving a communication schedule announced by a first wireless network station, determining that the first wireless network station has a right to generate an adjusted communication schedule, and transmitting an availability window schedule to the first wireless network station. The availability window schedule indicates one or more time slots during which communication with the wireless network station is inhibited.

    Station (STA), access point (AP) and method of spatial reuse

    公开(公告)号:US10244543B2

    公开(公告)日:2019-03-26

    申请号:US15391431

    申请日:2016-12-27

    Abstract: Embodiments of a station (STA), access point (AP) and method for determination of transmit power for spatial reuse are generally described herein. The STA may detect, in the channel, an overlapping basic service set (OBSS) physical layer convergence procedure protocol data unit (PPDU) from an OBSS AP. The STA may determine, based at least partly on an ESS color parameter included in the OBSS PPDU, whether the OBSS AP is included in the ESS network. The STA may determine an OBSS power threshold based at least partly on whether the OBSS AP is included in the ESS network. The STA may determine, based at least partly on a comparison between the OBSS power threshold and a received power of the OBSS PPDU, whether to transmit an uplink PPDU to the BSS AP in the channel during the TXOP.

    Network allocation vector settings for multi-user operation

    公开(公告)号:US10200989B2

    公开(公告)日:2019-02-05

    申请号:US15200448

    申请日:2016-07-01

    Abstract: Methods, computer readable media, and wireless apparatuses are disclosed for setting network allocation vectors (NAV) for multi-user (MU) operation. An apparatus of a wireless device is disclosed. The apparatus comprising processing circuitry configured to: decode a preamble portion of a frame, and if the preamble portion of the frame comprises a high-efficiency (HE) signal (SIG) A field (HE-SIG-A) comprising a transmission opportunity (TXOP) duration field and a media access control (MAC) portion of the frame is not decoded, set one or more NAVs based on the TXOP duration field. The processing circuitry may be further configured to: decode a MAC portion of the frame, and if the MAC portion of the frame comprises a MAC duration field, set the one or more NAVs based on the MAC duration field.

    Random access with carrier sensing
    108.
    发明授权

    公开(公告)号:US10178694B2

    公开(公告)日:2019-01-08

    申请号:US15280486

    申请日:2016-09-29

    Abstract: Computing readable media, apparatuses, and methods for random access with carrier sensing are disclosed. An apparatus is disclosed including processing circuitry configured to: decrement a value of an orthogonal frequency division multiple-access (OFDMA) backoff (OBO) field based on a number of the resource units (RUs) indicated for random access in a trigger frame. The processing circuitry may be further configured to: when the value of the OBO field reaches a predetermined value, randomly select one of the RUs indicated for random access and determine a virtual carrier sense (CS) based on one or more network allocation vectors (NAVs) and perform a physical CS on the selected RU, and if the virtual CS and the physical CS both indicate that the selected RU is idle, transmit a physical (PHY) layer convergence procedure (PLCP) protocol data units (PPDU) on the selected RU in accordance with OFDMA.

    Multi-user request-to-send clear-to-send (CTS) with null data packets CTS and response polling

    公开(公告)号:US10148404B2

    公开(公告)日:2018-12-04

    申请号:US15378937

    申请日:2016-12-14

    Abstract: Methods, apparatuses, computer readable media for multi-user (MU) request-to-send (RTS) and clear-to-send (CTS) with null data packet (NDP) CTSs and response polling. An apparatus of a wireless device comprising processing circuitry is disclosed. The processing circuitry may be configured to encode a MU-RTS including station identifications and indications of 20 MHz channels for the stations to transmit CTSs. The processing circuitry may be configured to configure the access point to transmit the MU-RTS. The processing circuitry may be configured to encode a trigger frame for polling, the trigger frame including the station identifications and indications of short feedback resource units for the stations identified by the station identifications. The processing circuitry may be configured to decode short feedback from the stations in accordance with the short feedback resource units where the short feedback is in response to the trigger frame for polling and the MU-RTS.

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