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：US10660085B2

公开(公告)日：2020-05-19

申请号：US15937365

申请日：2018-03-27

Applicant: Apple Inc.

Inventor： Mingguang Xu ,  Su Khiong Yong ,  Mithat C. Dogan ,  Rohit U. Nabar ,  Qi Wang ,  Kyle C. Brogle ,  Andrew J. Ringer

IPC: H04W72/04 ,  H04W64/00 ,  H04L25/02 ,  H04W84/12 ,  H04L5/00

Abstract: Communicating wireless devices collaborate and utilize waveforms to enable secure channel estimation. To protect against a repetitive replay attack, some embodiments include Single Carrier Physical Layer (SC-PHY) waveforms and/or interpolated OFDM waveforms that do not include a repeatable or predictable structure. The waveforms are transmitted in ranging packet structures that are compatible with legacy 802.11 technologies that do not utilize secure channel estimation. The ranging packets are received in combination with the information previously exchanged to enable the receiving wireless system to securely determine a channel estimate (e.g., determine a channel estimate without an interloper transmission that is not an authentic first arrival path in a multi-path channel between the wireless systems). Thus, one or both of the wireless systems can estimate the distance between them (or range). Devices utilizing legacy 802.11 technologies may receive the ranging packet structures and determine durations for deferring access to the channel.

公开(公告)号：US10411778B1

公开(公告)日：2019-09-10

申请号：US16100606

申请日：2018-08-10

Applicant: Apple Inc.

Inventor： Keangpo Ricky Ho ,  Su Khiong Yong ,  Yigal Eliaspur

IPC: H04B7/06 ,  H04W76/10

Abstract: Antenna diversity for beacons. An access point device may include multiple antenna arrays. A series of beacons may be transmitted using each of the antenna arrays in sequence. The beacons may include configuration information usable by wireless devices to determine when to respond to the beacons. The access point may receive responses during a series of response periods, using each of the antenna arrays.

公开(公告)号：US10341065B2

公开(公告)日：2019-07-02

申请号：US15498363

申请日：2017-04-26

Applicant: Apple Inc.

Inventor： Guoqing Li ,  Yong Liu ,  Christiaan A. Hartman ,  Ashok Ranganath ,  Oren Shani ,  Su Khiong Yong ,  Jarkko L. Kneckt ,  Joonsuk Kim

IPC: H04W72/04 ,  H04L5/00 ,  H04W74/06 ,  H04L12/801 ,  H04W84/12 ,  H04L27/26

Abstract: During operation, an interface circuit in an electronic device may receive, from a second electronic device (such as an access point in a WLAN), an uplink trigger frame that may specify an access category. In response to the uplink trigger frame, the electronic device may first include data associated with the specified access category in one or more frames, and then may transmit the one or more frames to the second electronic device. Moreover, when all the data associated with the specified access category has been transmitted or when there is no data associated with the specified access category, and when there is leftover time in an allocation associated with the uplink trigger frame, the interface circuit may transmit the one or more frames to the second electronic device with additional data associated with another access category that is different from the specified access category.

公开(公告)号：US10264602B2

公开(公告)日：2019-04-16

申请号：US15099055

申请日：2016-04-14

Applicant: Apple Inc.

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

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

Abstract: Embodiments include a method, computer program product, and system for 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：US20190075609A1

公开(公告)日：2019-03-07

申请号：US16110557

申请日：2018-08-23

Applicant: Apple Inc.

Inventor： Yong Liu ,  Christiaan A. Hartman ,  Guoqing Li ,  Lawrie Kurian ,  Peter N. Heerboth ,  Su Khiong Yong

IPC: H04W76/14 ,  H04W48/12

CPC classification number: H04W76/14 ,  H04W8/005 ,  H04W48/12 ,  H04W84/12

Abstract: One or more wireless stations may operate to configure direct communication with neighboring mobile stations, e.g., direct communication between the wireless stations without utilizing an intermediate access point. A mechanism for a wireless station to transmit a paging beacon outside of a paging window may include establishing a paged data link with a peer station, determining that one or more data frames associated with the paged data link are pending transmission, and transmitting a beacon to the peer station outside of a scheduled paging window of the paged data link. The beacon may include a paging attribute indicating there are pending data frames.

公开(公告)号：US20190075521A1

公开(公告)日：2019-03-07

申请号：US16113550

申请日：2018-08-27

Applicant: Apple Inc.

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

IPC: H04W52/02

Abstract: An interface circuit in an electronic device (such as an access point) may receive a wake-up-radio (WUR)-setup request associated with a recipient electronic device, where the WUR-setup request specifies one or more proposed data criteria or wake-up criteria that indicate when a wake-up frame is to be transmitted to the recipient electronic device. In response, the electronic device may determine one or more data criteria (or wake-up criteria) for use based at least in part on the one or more proposed data criteria. Then, the interface circuit may provide a WUR-setup response intended for the recipient electronic device, where the WUR-setup response indicates acceptance of the one or more proposed data criteria for use as the one or more data criteria or a proposed modification of at least one of the one or more proposed data criteria.

公开(公告)号：US20190014610A1

公开(公告)日：2019-01-10

申请号：US16130342

申请日：2018-09-13

Applicant: Apple Inc.

Inventor： Yong Liu ,  Christiaan A. Hartman ,  Daniel R. Borges ,  Peter N. Heerboth ,  Lawrie Kurian ,  Su Khiong Yong ,  Anand Rajagopalan ,  Saravanan Balasubramaniyan ,  Tashbeeb Haque ,  Andreas Wolf ,  Guoqing Li ,  Lilach Zukerman ,  Oren Shani

IPC: H04W76/14 ,  H04L29/08 ,  H04W72/12 ,  H04W8/00

CPC classification number: H04W76/14 ,  H04L67/104 ,  H04L67/325 ,  H04W8/005 ,  H04W72/12

Abstract: In one set of embodiments, one or more client stations operate to configure Neighbor Awareness Networking (NAN)—direct communication with neighboring client stations, i.e., direct communication between the client stations without utilizing an intermediate access point. Embodiments of the disclosure relate to NAN datapath scheduling and NAN pre-datapath operation setup and scheduling. The NAN datapath embodiments described herein provide a mechanism through which devices can communicate and provide services. Aspects of the datapath development include datapath scheduling, including datapath setup and scheduling attributes, as well as pre-datapath operation triggering and scheduling. Scheduling may include determination of a type of datapath, including paging and synchronized datapaths. NAN data cluster base schedules may be scheduled as equal-sets or subsets of datapath schedules. The datapath model may be implemented for unicast and multicast communication between client stations.

公开(公告)号：US10021650B2

公开(公告)日：2018-07-10

申请号：US15418854

申请日：2017-01-30

Applicant: Apple Inc.

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

IPC: H04W52/02 ,  H04W40/00 ,  H04W40/24 ,  H04L12/931 ,  H04L29/06 ,  H04W84/12 ,  H04L29/08 ,  H04L1/00

CPC classification number: H04W52/0274 ,  H04L1/0003 ,  H04L49/201 ,  H04L69/22 ,  H04L69/323 ,  H04W40/005 ,  H04W40/244 ,  H04W52/0209 ,  H04W52/0225 ,  H04W84/12 ,  H04W88/02 ,  Y02D70/00 ,  Y02D70/1222 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/26

Abstract: Embodiments described herein relate to providing reduced power consumption in wireless communication systems, such as 802.11 WLAN systems. Timing information regarding power save opportunities (PSOPs) may be provided in communication frames, which may inform mobile devices of expected frame exchange periods during which they may transition to a Doze state. Additional PSOP information may be included in beacon frames, which may inform mobile devices of expected multicast periods during which they may transition to a Doze state. This may operate to provide improvements in terms of power consumption.

公开(公告)号：US09949063B2

公开(公告)日：2018-04-17

申请号：US15167096

申请日：2016-05-27

Applicant: Apple Inc.

Inventor： Su Khiong Yong ,  Yong Liu ,  Christiaan A. Hartman ,  Siegfried Lehmann ,  Guoqing Li ,  Chiu Ngok E. Wong

IPC: H04W4/00 ,  H04L29/08 ,  H04W76/02 ,  H04W48/16 ,  H04W8/00 ,  H04W88/06

CPC classification number: H04W4/80 ,  H04L67/16 ,  H04W8/005 ,  H04W48/16 ,  H04W76/10 ,  H04W88/06

Abstract: In some embodiments, one or more wireless stations operate according to Neighbor Awareness Networking (NAN)—direct communication with neighboring wireless stations, e.g., direct communication between the wireless stations without utilizing an intermediate access point. Embodiments of the disclosure relate to triggering a NAN datapath using Bluetooth low energy (BLE) signaling. The NAN datapath embodiments described herein provide a mechanism through which devices can communicate to establish a Wi-Fi connection via non-Wi-Fi signaling and provide services. Aspects of the datapath development include Wi-Fi connection establishment and datapath initiation. The datapath model may be implemented for unicast and/or multicast communication between wireless stations, including mobile stations.