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公开(公告)号：US20210281363A1
公开(公告)日：2021-09-09
申请号：US17194627
申请日：2021-03-08
Applicant: Apple Inc.
Inventor： Tianyu Wu , Yong Liu , Jinjing Jiang , Jerkko L. Knect , Lochan Verma , Qi Wang , Su Khiong Yong , Anuj Batra
Abstract: An electronic device (such as an access point) is described. This electronic device transmits an orthogonal frequency division multiple access (OFDMA) frame to a recipient electronic device (such as a client or a station). The OFDMA frame includes multiple predefined resource units (RUs) allocated to the recipient electronic device in a set of predefined RUs having associated frequency bandwidths. Moreover, the multiple predefined RUs include two or more first predefined RUs having a first number of tones less than a predefined amount, or two or more second predefined RUs having a second number of tones greater than or equal to the predefined amount. For example, the predefined amount may include 242 tones. Note that the multiple predefined RUs may have the same or different numbers of tones. Moreover, the electronic may receive an acknowledgment or a block acknowledgment from the recipient electronic device.
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公开(公告)号：US20210281357A1
公开(公告)日：2021-09-09
申请号：US17194782
申请日：2021-03-08
Applicant: Apple Inc.
Inventor： Lochan Verma , Yong Liu , Jarkko L. Kneckt , Qi Wang , Jinjing Jiang , Su Khiong Yong , Tianyu Wu
Abstract: An electronic device (such as an access point) that receives one or more block acknowledgments is described. This electronic device may transmit an extremely high-throughput (EHT) physical layer convergence protocol (PLCP) protocol data unit (PPDU) to a recipient electronic device, where the EHT PPDU is transmitted in multiple non-contiguous sub-bands that are separated by a punctured sub-band. Moreover, the electronic may receive the one or more block acknowledgments from the recipient electronic device, where the one or more block acknowledgments exclude the punctured sub-band. Note that the EHT PPDU may exclude transmitted energy in the punctured sub-band. Moreover, the punctured sub-band may have a bandwidth of at least 20 MHz and may be different from a primary sub-band.
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公开(公告)号：US20210219363A1
公开(公告)日：2021-07-15
申请号：US17147322
申请日：2021-01-12
Applicant: Apple Inc.
Inventor： Jinjing Jiang , Yong Liu , Tianyu Wu , Su Khiong Yong , Jarkko L. Kneckt
Abstract: This disclosure relates to methods for conducting multilink communications between wireless devices over a wireless local area network (WLAN). A wireless device determines link availability for multiple wireless links of the wireless device. The wireless device transmits link availability information for the multiple wireless links of the wireless device using a first wireless link of the wireless device.
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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
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.
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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
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.
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Patent Agency Ranking
26.发明授权公开(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
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.
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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
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.
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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
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.
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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
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.
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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
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.
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