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公开(公告)号：US20200288437A1
公开(公告)日：2020-09-10
申请号：US16542358
申请日：2019-08-16
Applicant: Apple Inc.
Inventor： Guoqing Li , Yang Yu , Paul V. Flynn , Yaranama Venkata Ramana Dass , Vijay Kumar Ramamurthi , Camille Chen , Rajneesh Kumar
IPC: H04W72/04
Abstract: An interface circuit in an electronic device (such as an access point) may request a channel status in order to specify a subset of one or more frequency sub-bands. During operation, the interface circuit may provide at least a frame to the recipient electronic device, where the frame requests the channel status for the one or more frequency sub-bands. Then, the electronic device may receive one or more measurement results from the recipient electronic device that specify the subset of the one or more frequency sub-bands (such as one or more RUs) that are not to be used when communicating with the recipient electronic device.
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公开(公告)号：US10708915B2
公开(公告)日：2020-07-07
申请号：US15147365
申请日：2016-05-05
Applicant: Apple Inc.
Inventor： Joonsuk Kim , Guoqing Li , Syed Aon Mujtaba
Abstract: Systems and methods of providing control information to wireless devices accessing a wireless network are provided. According to some embodiments, a method of wireless communication is provided. According to the method, a first wireless communication channel is assigned to a first wireless device. A second wireless communication channel is assigned to a second wireless device. A third wireless communication channel is designated for use as a control channel that is common to the first and second wireless devices and control information is transmitted to the first and second wireless devices via the third wireless communication channel.
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公开(公告)号：US20200154353A1
公开(公告)日：2020-05-14
申请号：US16676592
申请日：2019-11-07
Applicant: Apple Inc.
Inventor： Guoqing Li , Yong Liu , Lawrie Kurian , Tashbeeb Haque
Abstract: An electronic device (such as an access point) may provide a management frame, intended for at least a recipient electronic device, that includes slotted-operation information corresponding to a power-save mode of the electronic device for communication with at least the recipient electronic device. The slotted-operation information may include a sequence of temporal slots and associated channel information for the temporal slots. When a channel for a temporal slot comprises a null value, the power-save mode may include transitioning the electronic device into a lower-power-consumption mode during the temporal slot. Alternatively, when a channel for a temporal slot is different than a null value, the power-save mode may include performing another activity than communicating with the recipient electronic device during the temporal slot.
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公开(公告)号：US10609543B2
公开(公告)日：2020-03-31
申请号：US15386156
申请日：2016-12-21
Applicant: Apple Inc.
Inventor： Su Khiong Yong , Christiaan A. Hartman , Anjali S. Sandesara , Lawrie Kurian , Peter N. Heerboth , Guoqing Li , Siegfried Lehmann , Akshay Mangalam Srivatsa , Yong Liu , Michael Jason Giles
Abstract: In some embodiments, one or more wireless stations operate to configure 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 a mechanism for a device to transmit, via a BTLE (or Bluetooth) interface, a first message indicating an operation associated with a Wi-Fi service (e.g., a service available via a Wi-Fi interface and/or Wi-Fi related interface parameters) to a peer device. The first message may include a service hash that indicates the operation. The service hash may be included in a first data structure. The first data structure may indicate availability of the Wi-Fi service. The device may receive a second message from the peer device indicating that the neighboring wireless station intends to subscribe to or provide the Wi-Fi service, e.g., via Wi-Fi peer-to-peer communications.
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公开(公告)号：US10567186B2
公开(公告)日：2020-02-18
申请号：US15137870
申请日：2016-04-25
Applicant: Apple Inc.
Inventor： Guoqing Li , Joonsuk Kim , Chiu Ngok E. Wong , Yong Liu , Su Khiong Yong , Christiaan A. Hartman , Syed Aon Mujtaba , Ye Sun , Shu Du , Wen Zhao
IPC: H04W4/06 , H04L12/18 , H04B7/0452 , H04W84/12
Abstract: A method for receiving feedback on a quality of multicast transmissions in a Wireless Local Access Network (WLAN) including a source electronic device (e.g., an access point) and a plurality of electronic devices is disclosed, according to some embodiments. The method can include (i) transmitting a plurality of multicast packets addressed to a subset of the plurality of electronic devices by the source electronic device; (ii) concurrently polling the subset of the plurality of electronic devices by the source electronic device; and (iii) receiving a plurality of block acknowledgements (BAs) from at least the subset of the plurality of electronic devices by the source electronic device. Each BA may include information on a quality of reception of two or more multicast packets received at an electronic device.
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Patent Agency Ranking
公开(公告)号：US10524286B2
公开(公告)日：2019-12-31
申请号：US15605158
申请日：2017-05-25
Applicant: Apple Inc.
Inventor： Jarkko L. Kneckt , Ashok Ranganath , Yong Liu , Christiaan A. Hartman , Guoqing Li , Oren Shani , Joonsuk Kim
Abstract: An electronic device that transmits a frame to a second electronic device is described. In particular, during operation, an interface circuit in the electronic device (such as an access point in a WLAN) may transmit the frame to the second electronic device using a Wi-Fi communication protocol. The frame may include information cancelling a previously specified NAV protected time in a preamble of the frame. For example, the information may include a CF-End indication. Moreover, the information may be included in a MAC header of the frame and, more generally, in a preamble of a high efficiency (HE) physical layer convergence protocol (PLCP) protocol data unit (PPDU). Furthermore, the electronic device may transmit the frame in response to a block acknowledgment (BA) from the second electronic device.
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公开(公告)号：US10356819B2
公开(公告)日：2019-07-16
申请号：US15230090
申请日：2016-08-05
Applicant: Apple Inc.
Inventor： Guoqing Li , Yong Liu , Joonsuk Kim , Christiaan A. Hartman , Chiu Ngok E. Wong , Syed Aon Mujtaba , Matt Semersky , Su Khiong Yong
IPC: H04W74/08
Abstract: Disclosed herein are system, method, and computer program product embodiments for enabling a spatial reuse opportunity at a high efficiency (HE) station and a network allocation vector (NAV) reset capability at a legacy station using a Request to Send and/or Clear to Send (RTS and/or CTS) frame. For example, the method can include receiving a RTS frame with a redefined field that specifies spatial reuse information. The NAV can be set based on the RTS frame. The method can determine whether a second frame was received within a threshold time after a Short Interframe Space (SIFS). Finally, the method can reset the NAV based on whether the second frame was received within the threshold time.
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公开(公告)号：US10306476B2
公开(公告)日：2019-05-28
申请号：US15498358
申请日：2017-04-26
Applicant: Apple Inc.
Inventor： Guoqing Li , Christiaan A. Hartman , Jarkko Kneckt , Yong Liu , Su Khiong Yong , Joonsuk Kim , Oren Shani
IPC: H04L29/06 , H04L5/14 , H04L12/24 , H04W16/02 , H04W52/36 , H04W74/00 , H04W84/12 , H04W88/08 , H04L12/931
Abstract: An interface circuit in an electronic device may receive, from an access point associated with the electronic device, a frame with management information that enables the electronic device to use a spatial-reuse technique, where the electronic device, through the spatial-reuse technique, adjusts a transmit power and a channel-availability sensing threshold. Moreover, the management information may specify parameters for the spatial-reuse technique. Then, the electronic device may transmit, using the spatial-reuse technique, one or more frames to the access point based on the parameters. Furthermore, the electronic device may transmit, to the access point, feedback information that indicates communication performance during the communication between the electronic device and the access point. For example, the feedback information may include a retry rate and, more generally, communication-performance information. This feedback information may be used by the access point to modify the parameters.
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公开(公告)号：US10285040B2
公开(公告)日：2019-05-07
申请号：US15605011
申请日：2017-05-25
Applicant: Apple Inc.
Inventor： Yong Liu , Christiaan A. Hartman , Guoqing Li , Lawrie Kurian , Peter N. Heerboth , 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 accelerated service discovery between peer devices. In some embodiments, a wireless device may broadcast a probe beacon on one or more discovery channels. The wireless device may then scan the discovery channels for an extended period of time. The wireless device may receive a response from a peer device and transmit further service information to the peer device in an availability window indicated in the response.
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公开(公告)号：US10277424B2
公开(公告)日：2019-04-30
申请号：US15279260
申请日：2016-09-28
Applicant: Apple Inc.
Inventor： Guoqing Li , Joonsuk Kim , Yong Liu , Christiaan A. Hartman , Su Khiong Yong
Abstract: Time, frequency and waveform division multiplex schemes are used to efficiently estimate multiple uplink channels in a Wireless Local Area Network (WLAN). Orthogonal Frequency Division Multiple Access (OFDMA) and multi-user Multiple Input Multiple Output (MU-MIMO) approaches provide efficient uplink data transmission. An Access Point (AP) communicates with multiple Stations (STAs) in the WLAN. In some approaches, two or more STAs are addressed and the two or more STAs respond at the same time. The AP receives a composite signal and separates the responses to estimate the uplink channel from each STA. After the AP learns the uplink channels, the AP triggers data transmission from one or more of the WLAN STAs by sending a synchronizing trigger message. In some embodiments, the STAs respond simultaneously with data transmissions to the AP.
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