Backoff mechanism for dynamic clear channel assessment (CCA)

    公开(公告)号:US10091817B2

    公开(公告)日:2018-10-02

    申请号:US15342906

    申请日:2016-11-03

    Abstract: A wireless first device may receive a packet from another device from an overlapping basic service set (OBSS). A received power of the packet may be greater than a threshold for transmitting during the time of the packet. If the first device reduces its transmit power, the first device may increase the threshold. If the received power is less than the increased threshold, the first device may count down a backoff count during a transmission time or transmission opportunity of the packet. In some cases, after the transmission time or transmission opportunity, the first device may increase its transmission power. In some cases, the condition for counting down a backoff count may also include initiating or finishing the transmission during the transmission time or the transmission opportunity of the packet, or transmitting at the reduced power.

    RANDOM ACCESS REQUEST REGULATION TECHNIQUES FOR WIRELESS STATIONS

    公开(公告)号:US20180255570A1

    公开(公告)日:2018-09-06

    申请号:US15853604

    申请日:2017-12-22

    CPC classification number: H04W74/006 H04W74/008 H04W74/0833

    Abstract: Methods, systems, and devices for wireless communication are described. An access point (AP) may configure one or more trigger frames, which may include a number of random access resource units (RUs). A number of stations (STAs) may contend to use such random access RUs. Regulation techniques for which STAs may contend for access to random access RUs may include providing that separate subsets of random access RUs may be identified for STAs that are associated and unassociated with the AP. In some implementations, the regulation techniques enable STAs to attempt transmissions using the random access RUs when uplink-limited or if the STA has a non-empty buffer, or combinations thereof. Techniques for acknowledging receipt of an uplink transmission may include transmitting an acknowledgment using a same association identification for the acknowledgment as used in the uplink transmission, and including a STA identifier in a signaling field associated with the acknowledgment.

    WAKEUP RADIO SYNCHRONIZATION TECHNIQUES
    76.
    发明申请

    公开(公告)号:US20180234918A1

    公开(公告)日:2018-08-16

    申请号:US15896006

    申请日:2018-02-13

    Abstract: Methods, systems, and devices for wireless communication are described. An access point (AP) may establish a wakeup radio listen schedule for a station (STA) such that a wakeup radio of the STA is powered on to listen for wakeup messages according to wakeup signals transmitted by the AP (e.g., to power on a primary radio). The AP may identify synchronization information such as clock, interval, and offset information for the wakeup radio listen schedule, and may transmit the synchronization information to the STA, such that the STA may synchronize the wakeup radio for wakeup messages. In some cases, the STA may monitor for the synchronization information using a primary radio (e.g., from periodic beacon signals sent by the AP). In other cases, the STA may receive synchronization information in a wakeup signal (e.g., using the wakeup radio). In some examples, the STA may indicate a preferred synchronization mechanism in advance.

    METHODS AND APPARATUS FOR ACKNOWLEDGING MULTIPLE USER UPLINK TRANSMISSIONS

    公开(公告)号:US20180205426A1

    公开(公告)日:2018-07-19

    申请号:US15920972

    申请日:2018-03-14

    CPC classification number: H04B7/0452 H04L1/1607 H04L1/1829 H04L5/0007

    Abstract: Methods and systems for acknowledging multi-user transmissions on a wireless network include receiving a multi-user transmission comprising a first message from the first device and a second message from the second device, generating a first media access control protocol data unit, the first media access control protocol data unit acknowledging the first message and including a destination address field identifying the first device, generating a second media access control protocol data unit, the second media access control protocol data unit acknowledging the second message and including a destination address field identifying the second device, generating an aggregated media access control protocol data unit (A-MPDU) comprising the first media access control protocol data unit (MPDU) and the second media access control protocol data unit (MPDU); and transmitting the aggregated media access control protocol data unit (A-MPDU) on the wireless network.

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