公开(公告)号：US11032768B2

公开(公告)日：2021-06-08

申请号：US16121272

申请日：2018-09-04

Applicant: Apple Inc.

Inventor： Guoqing Li ,  Christiaan A. Hartman ,  Zheng Zeng

IPC: H04W52/02

Abstract: A recipient electronic device that receives a wake-up frame is described. This recipient electronic device may include an interface circuit that communicates with an electronic device, where the interface circuit includes a main radio and a wake-up radio (WUR) that at least selectively transitions the main radio from a lower-power mode to a higher-power mode. During operation, the WUR receives the wake-up frame intended for the recipient electronic device, where the wake-up frame comprises a payload field with data. For example, the wake-up frame may specify: a total size of the wake-up frame, and/or a size of the payload field. In response to the wake-up frame, the WUR selectively transitions the main radio from the lower-power mode to the higher-power mode. Moreover, the main radio provides an acknowledgment associated with the recipient electronic device that indicates that the recipient electronic device received the wake-up frame.

公开(公告)号：US20210100015A1

公开(公告)日：2021-04-01

申请号：US17032292

申请日：2020-09-25

Applicant: Apple Inc.

Inventor： Guoqing Li ,  Brajesh K. Dave ,  Shehla S. Rana ,  Yang Yu ,  Rajneesh Kumar

IPC: H04W72/12 ,  H04W28/24 ,  H04L29/06 ,  H04W84/12

Abstract: Methods, systems, and apparatus are presented for providing enhanced scheduling requests, e.g., in an IEEE 802.11 network. A client station (STA) may determine one or more minimum quality of service (QoS) metrics for supporting an application being implemented by the STA, and may determine minimum scheduling parameters to be implemented by an access point (AP) to achieve the minimum QoS. The STA may transmit to the AP a specific scheduling request indicating the minimum scheduling parameters. In response, the AP may schedule communication resources for the STA in accordance with the minimum scheduling resources.

公开(公告)号：US20210076402A1

公开(公告)日：2021-03-11

申请号：US17009895

申请日：2020-09-02

Applicant: Apple Inc.

Inventor： Guoqing Li ,  Yoel Boger

IPC: H04W72/12 ,  H04L5/00 ,  H04L1/16 ,  H04W74/08 ,  H04W52/02

Abstract: Methods for performing negative acknowledgements (NACKs) in a Wi-Fi based network may include a wireless device receiving, from a neighboring wireless device, a transmission schedule associated with receipt of data packets from the neighboring wireless device. The transmission schedule may include a timeout period associated with transmission of the data packets and/or a start time of the transmission schedule. The method may also include the wireless device determining an error condition associated with the data packets. The error condition may be, for example, non-receipt of any packet (e.g., data packets and/or non-data packets) prior to expiration of the timeout period and/or detection of a gap in sequence numbers associated with the data packets. The method may further include the wireless device, based on the error condition, transmitting a NACK. The NACK may be (or include) a negative block ACK (N-BA) bitmap indicating which data packets were not successfully received.

公开(公告)号：US10904829B2

公开(公告)日：2021-01-26

申请号：US16053386

申请日：2018-08-02

Applicant: Apple Inc.

Inventor： Jarkko L. Kneckt ,  Chiu Ngok E. Wong ,  Yong Liu ,  Christiaan A. Hartman ,  Guoqing Li ,  Daniel R. Borges

IPC: H04W52/02 ,  H04W76/28 ,  H04W72/12

Abstract: An interface circuit in an electronic device (such as an access point) may provide a targeted wake-up time (TWT) service period (SP) schedule to a recipient electronic device. During operation the interface circuit may receive a TWT setup request associated with the recipient electronic device, where the TWT setup request includes non-availability information specifying one or more times when the recipient electronic device will be unavailable. For example, the non-availability information may include one or more times when the recipient electronic device has limited ability to transmit and/or receive. The interface circuit may provide a TWT setup response for the recipient electronic device, where the TWT setup response includes information specifying the TWT SP schedule for the recipient electronic device that includes at least one of: a TWT SP start time, a TWT SP duration, or an interval between TWT SPs.

公开(公告)号：US10856229B2

公开(公告)日：2020-12-01

申请号：US16024536

申请日：2018-06-29

Applicant: Apple Inc.

Inventor： Guoqing Li ,  Yong Liu ,  Christiaan A. Hartman ,  Jarkko L. Kneckt ,  Oren Shani

IPC: H04W52/02 ,  H04W4/06 ,  H04W72/04 ,  H04W84/12

Abstract: The present disclosure describes an electronic device configured to concurrently transmit wake-up radio (WUR) packets in a duplicated WUR transmission mode, non-duplicated WUR transmission mode, and/or mixed WUR transmission mode in one or more channels of a wideband basic service set (BSS) communication. Receiving electronic devices may be grouped together and assigned to monitor for the WUR packets. For example, the receiving electronic devices may be assigned to a position within the one or more channels to monitor for the WUR packets.

公开(公告)号：US10757731B2

公开(公告)日：2020-08-25

申请号：US16383155

申请日：2019-04-12

Applicant: Apple Inc.

Inventor： Guoqing Li ,  Joonsuk Kim ,  Christiaan A. Hartman ,  Syed Aon Mujtaba ,  Chiu Ngok E. Wong ,  Yong Liu ,  Su Khiong Yong

IPC: H04W74/00 ,  H04W74/08 ,  H04L5/00

Abstract: Some embodiments are directed to grouping electronic devices into contention groups to reduce uplink Orthogonal Frequency-Division Multiple Access (OFDMA) random access (OFDMA-RA) collisions. An access point may explicitly assign an electronic device to a contention group, or the electronic device may implicitly determine an assignment to the contention group. To explicitly assign a device to a contention group, the access point may randomly assign or assign based on a criteria of the electronic device. Examples of criteria include an association identifier (AID), a traffic type/quality of service (QoS) category, a power saving preference, and an association status. The electronic device may implicitly determine a contention group assignment based on the total number of contention groups. The electronic device may use the explicitly or implicitly assigned contention group number to determine whether the electronic device may contend for a given trigger frame random access (TF-R) frame.

公开(公告)号：US20200267630A1

公开(公告)日：2020-08-20

申请号：US16798835

申请日：2020-02-24

Applicant: Apple Inc.

Inventor： Jarkko L. KNECKT ,  Christiaan A. HARTMAN ,  Guoqing Li ,  Joonsuk KIM ,  Matthew L. SEMERSKY ,  Oren SHANI ,  Syed A. MUJTABA ,  Yong LIU

IPC: H04W48/14 ,  H04W4/80 ,  H04W8/00 ,  H04B17/318

Abstract: Passive and active scanning for extended range wireless networking. The choice between legacy and extended range signaling can depend on one or more factors. For passive scanning, an electronic device may transmit a combination of legacy beacons and extended range beacons for network discovery by receiving electronic devices. For active scanning, an electronic device may transmit extended range probe requests in addition to legacy probe requests to discover all of the access points within its transmission range. Responses to probe requests can use extended range, legacy, single user, and/or multi user protocols.

公开(公告)号：US10736022B2

公开(公告)日：2020-08-04

申请号：US15289481

申请日：2016-10-10

Applicant: Apple Inc.

Inventor： Yong Liu ,  Christiaan A. Hartman ,  Guoqing Li ,  Su Khiong Yong

IPC: H04W76/00 ,  H04W48/16 ,  H04W8/00 ,  H04W76/14 ,  H04W84/12 ,  H04W88/04 ,  H04W84/18

Abstract: In some embodiments, one or more wireless stations operate to configure direct communication with neighboring mobile stations, e.g., direct communication between the wireless stations without utilizing an intermediate access point. Embodiments of the disclosure relate to a mechanism for peer NAN devices to assist one another in receiving communications from an access point common to the peer NAN devices. In some embodiments, a wireless station may establish a communication link with a Wi-Fi access point and establish a peer-to-peer communication link with one or more neighboring wireless stations. In addition, the wireless station may receive transmissions intended for at least one neighboring wireless station of the one or more neighboring wireless stations from the Wi-Fi access point and relay the transmissions to the at least one wireless station on behalf of the Wi-Fi access point.

公开(公告)号：US20200221378A1

公开(公告)日：2020-07-09

申请号：US16591140

申请日：2019-10-02

Applicant: Apple Inc.

Inventor： Jarkko L. Kneckt ,  Guoqing Li ,  Yong Liu ,  Christiaan A. Hartman

IPC: H04W48/20 ,  H04W48/14

Abstract: Methods and devices for implementing enhanced probe messaging over a wireless local area network. A user equipment (UE) may transmit a probe request message to a wireless access point (AP) through a wireless local area network (WLAN), wherein the probe request message requests one or more parameters of a response message. The UE may receive the response message as a probe response message or a beacon message from the first AP, and the response message may include information related to one or more basic service sets (BSSs). The information related to the one or more BSSs is determined at least in part based on the requested one or more parameters of the probe request message. The UE may establish a connection with a first BSS of the one or more BSSs based at least in part on the information comprised within the probe response message or the beacon message.

公开(公告)号：US10484309B2

公开(公告)日：2019-11-19

申请号：US15610046

申请日：2017-05-31

Applicant: Apple Inc.

Inventor： Guoqing Li ,  Yoel Boger ,  Christiaan A. Hartman ,  Yong Liu ,  Oren Shani ,  Maksim Shmukler

IPC: H04L12/861 ,  H04W28/02 ,  H04W72/12 ,  H04W84/12 ,  H04L5/00 ,  H04W74/00

Abstract: An access point may receive, from a set of electronic devices, one or more buffer status reports that indicate that at least a subset of the electronic devices have uplink data associated with one or more access categories. In response, the access point may create a group of uplink virtual queues for one or more electronic devices in the subset based on the one or more buffer status reports, where a given uplink virtual queue corresponds to a particular access category and a given electronic device. The access point may start one or more backoff counters with a one-to-one correspondence to uplink virtual queues in the group of uplink virtual queues. When a backoff counter for the given uplink virtual queue reaches zero, the access point may transmit a trigger frame to an electronic device in the subset that corresponds to the given uplink virtual queue.