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公开(公告)号：US20240305430A1
公开(公告)日：2024-09-12
申请号：US18600572
申请日：2024-03-08
Applicant: Apple Inc.
Inventor： Tianyu Wu , Ahmad Reza Hedayat , Anuj Batra , Jarkko L. Kneckt , Jinjing Jiang , Lochan Verma , Oren Shani , Qi Wang , Su Khiong Yong , Wook Bong Lee , Yong Liu
CPC classification number: H04L5/0053 , H04L1/0003 , H04W80/02
Abstract: Disclosed are methods, systems, and computer-readable medium to perform operations including detecting a reception opportunity of a physical layer protocol data unit (PPDU) scheduled to be transmitted by a transmitter, where the PPDU includes a preamble and one or more media access control (MAC) PDUs (MPDUs); decoding the preamble of the PPDU; detecting that reception of the one or more MPDUs has failed; and in response to the detecting, preparing a Negative Acknowledgment (NACK) message for transmission to the transmitter.
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公开(公告)号：US12021628B2
公开(公告)日：2024-06-25
申请号：US18298270
申请日：2023-04-10
Applicant: Apple Inc.
Inventor： Tianyu Wu , Yong Liu , Jinjing Jiang , Jarkko L. Kneckt , Lochan Verma , Qi Wang , Su Khiong Yong , Anuj Batra
IPC: H04L1/16 , H03M13/00 , H04L1/00 , H04L1/1607 , H04L5/00
CPC classification number: H04L1/1621 , H04L1/0057 , H04L5/0007 , H04L5/0098
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：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：US20250081239A1
公开(公告)日：2025-03-06
申请号：US18819013
申请日：2024-08-29
Applicant: Apple Inc.
Inventor： Morteza Mehrnoush , Anuj Batra , Chittabrata Ghosh , Mohamed Abouelseoud , Oren Shani , Wook Bong Lee , Zhou Lan
IPC: H04W74/0816 , H04W74/08 , H04W74/0838 , H04W80/02
Abstract: A method for transmitting a high priority (HP) packet from a first wireless device to a second wireless device is described. The method includes determining the presence of an HP packet for uplink transmission; determining that a communications link that uses a wireless medium for transmitting the HP packet is busy; generating a preemption request message in a frame; and transmitting the frame with the preemption request message to the second wireless device. The first wireless device can receive from the second wireless device an indication that the preemption request was accepted, such as by receiving a trigger frame with resource allocation for transmitting the HP packet or an indication of the end of a contention free period, to allow the first wireless device to contend for channel access to transmit the HP packet.
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公开(公告)号：US20240380516A1
公开(公告)日：2024-11-14
申请号：US18652108
申请日：2024-05-01
Applicant: Apple Inc.
Inventor： Tianyu Wu , Anuj Batra , Wook Bong Lee , Qi Wang
Abstract: A method of an initiating station (ISTA) can include transmitting, to a responding station (RSTA), a first indicator indicating whether the ISTA supports one or more optional preamble puncture patterns. Additionally, the method can include receiving, from the RSTA, a second indicator indicating whether the RSTA supports optional preamble puncture patterns. Furthermore and responsive to determining that the ISTA and the RSTA support optional preamble puncture patterns, the method can further include starting, according to at least one of the optional preamble puncture patterns, a ranging session with the RSTA.
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Patent Agency Ranking
公开(公告)号：US20220408349A1
公开(公告)日：2022-12-22
申请号：US17841064
申请日：2022-06-15
Applicant: Apple Inc.
Inventor： Jarkko L Kneckt , Veerendra Boodannavar , Charles F. Dominguez , Yong Liu , Su Khlong Yong , Tianyu Wu , Daniel R. Borges , Sundar Sriram , Oren Shani , Yoel Boger , Anuj Batra , Debashis Dash , Matthew L. Semersky , Ahmet G. Cepni , Noam Ginsburg
Abstract: An electronic device that performs a scan is described. During operation, the electronic device may perform, using a scanning radio, the scan of a band of frequencies, where the scanning radio only receives frames. Then, the electronic device may receive, using the scanning radio, a beacon associated with a second electronic device, where the beacon includes information associated with operation of a third electronic device in a second band of frequencies. Next, the electronic device may perform, using a data radio, a second scan of the second band of frequencies based at least in part on the information, where the data radio transmits and/or receives second frames, and where the second scan is performed, at least in part, while the scan is performed. Note that the electronic device may not be associated with (or may not have a connection with) the second electronic device and/or the third electronic device.
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公开(公告)号：US20220408237A1
公开(公告)日：2022-12-22
申请号：US17842314
申请日：2022-06-16
Applicant: Apple Inc.
Inventor： Jarkko L. Kneckt , Veerendra Boodannavar , Charles F. Dominguez , Yong Liu , Su Khiong Yong , Tianyu Wu , Daniel R. Borges , Sundar Sriram , Oren Shani , Yoel Boger , Anuj Batra , Debashis Dash , Matthew L. Semersky , Ahmet G. Cepni , Noam Ginsburg
Abstract: During operation, an electronic device may perform, using a scanning radio, a scan of a band of frequencies, where the scanning radio only receives frames. Then, the electronic device may receive, using the scanning radio, a beacon frame associated with a second electronic device, where the beacon frame includes information associated with operation of a third electronic device in a second band of frequencies. Next, the electronic device may perform, using a data radio, a second scan of the second band of frequencies based at least in part on the information, where the data radio transmits and/or receives second frames, and where the second scan is performed, at least in part, while the scan is performed. Note that the electronic device may not be associated with (or may not have a connection with) the second electronic device and/or the third electronic device.
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公开(公告)号：US10924303B2
公开(公告)日：2021-02-16
申请号：US16291973
申请日：2019-03-04
Applicant: Apple Inc.
Inventor： Anuj Batra , Joachim S. Hammerschmidt , Eren Sasoglu
IPC: H04L25/02 , H04L9/06 , H04L9/08 , H04L25/03 , H04B1/711 , H04B7/0413 , G06F7/58 , H04L25/49 , H04B1/69 , H04B1/7163 , H04L9/12
Abstract: A secure training sequence (STS) is included in wireless packets communicated between electronic devices to assist with channel estimation and wireless ranging. The STS includes multiple STS segments generated based on outputs from a cryptographically secure pseudo-random number generator (CSPRNG), the STS segments being separated by guard intervals and formatted in accordance with an 802.15.4 data symbol format that uses burst position modulation (BPM) and binary phase shift keying (BPSK) to map bits from the CSPRNG to burst positions and pulse polarities for the STS symbols. Both a first electronic device, which generates the STS, and a second electronic device, which estimates a communication channel using the STS, have prior private knowledge of cryptographic keys required to generate a non-repetitive single-use pseudo-random (PR) sequence by the CSPRNG. The STS includes two burst position intervals per STS symbol and two possible burst positions within each burst position interval.
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公开(公告)号：US20250016820A1
公开(公告)日：2025-01-09
申请号：US18763735
申请日：2024-07-03
Applicant: Apple Inc.
Inventor： Zhou Lan , Chittabrata Ghosh , Anuj Batra , Wook Bong Lee , Mohamed Abouelseoud , Morteza Mehrnoush
IPC: H04W72/566 , H04L5/00 , H04W84/12
Abstract: Systems, methods, and mechanisms for preemption of non-low latency data within an aggregated medium access control (MAC) protocol data unit (AMPDU), e.g., such as in current and future IEEE 802.11 systems. A wireless device (e.g., an access point or wireless station) may transmit, during an AMPDU, a trigger to receive (TRX) frame. The TRX frame may indicate preemption of non-low latency data intended for a first wireless station with low latency data intended for a second wireless station, e.g., via an acknowledgement policy change. Additionally, the wireless device may be configured to transmit, to the second wireless station, the low latency data within the AMPDU. Further, the wireless device may be configured to receive, after the AMPDU transmission is complete, a multi-block acknowledgement (M-BA) frame from the second wireless station. The M-BA frame and completion of the AMPDU transmission are separated by a short inter-frame space (SIFS).
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公开(公告)号：US20200003890A1
公开(公告)日：2020-01-02
申请号：US16383119
申请日：2019-04-12
Applicant: Apple Inc.
Inventor： Su Khiong YONG , Mithat C. Dogan , Mingguang Xu , Anuj Batra , Keangpo R. Ho , Akira Yamanaka
Abstract: Some embodiments enable secure time of flight (SToF) measurements for wireless communication packets that include secure ranging packets with zero padded random sequence waveforms, including at higher frequency bands (e.g., 60 GHz) and in non-line of sight (NLOS) scenarios. Some embodiments provide a flexible protocol to allow negotiation of one or more security parameters and/or SToF operation parameters. For example, some embodiments employ: phase tracking and signaling to support devices with phase noise constraints to mitigate phase noise at higher frequencies; determining a number of random sequences (RSs) used for SToF to support consistency checks and channel verification; additional rules supporting sub-phases of the SToF operation; and/or determining First Path (FP), Sub-Optimal, and/or Hybrid path AWV modes and the pre-conditioning usage of these modes.
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