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公开(公告)号：US20240015649A1
公开(公告)日：2024-01-11
申请号：US18219523
申请日：2023-07-07
Applicant: Apple Inc.
Inventor： Jarkko L. KNECKT , Mohamed ABOUELSEOUD , Oren SHANI , Anuj BATRA , Yoel BOGER , Yong LIU , Leonid EPSTEIN , Su Khiong YONG , Qi WANG , Zhou LAN , Tianyu WU , Akira YAMANAKA , Noam GINSBURG
CPC classification number: H04W52/0216 , H04W76/15 , H04W84/12
Abstract: Some aspects include apparatuses and methods for implementing a target wake time (TWT) scheme (or technique) for multi-link wireless communication networks. For example, a multi-link device (MILD) includes a first station (STA) associated with a first link of a wireless network and configured to communicate with a second MLD over the first link using a multi-link target wake time (TWT) process. The MLD also includes a second STA associated with a second link of the wireless network and configured to communicate with the second MLD over the second link using the multi-link TWT process. The MLD further includes one or more processors communicatively coupled to the first and second STAs and configured to control the operations of the first and second STAs to perform the multi-link TWT process.
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公开(公告)号：US20230086527A1
公开(公告)日：2023-03-23
申请号：US17480125
申请日：2021-09-20
Applicant: Apple Inc.
Inventor： Yoel BOGER , Oren SHANI , Jerome C. TU , Sungho YUN
IPC: H04W72/12
Abstract: The subject disclosure provides systems and methods for low-latency point-to-point communication between electronic devices. In one or more implementations, low latency can be achieved by including data in transmission units, in order of priority up to a maximum duration for the transmission unit. In an example in which the communication occurs over a WiFi channel, the transmission unit may be a multi-TID AMPDU, and the priority may be based on a Quality of Service (QoS) category as identified by the traffic identifier (TID). The communication may be exchanged using a periodic access window that can be adaptively offset, to efficiently share bandwidth with other device pairs on the same wireless channel. Base and client devices can be time synchronized, and transmission opportunity (TXOP) bursting can be allowed, in one or more implementations.
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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.
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公开(公告)号：US20170331605A1
公开(公告)日：2017-11-16
申请号：US15590960
申请日：2017-05-09
Applicant: Apple Inc.
Inventor： Oren SHANI , Guoqing LI , Joonsuk KIM , Ashok RANGANATH
Abstract: An access point (AP) in a wireless local area network (WLAN) uses a protocol to determine frequency/time resource allocations of resource units (RUs) in parallel with data transfer to and from WLAN stations (STAs). The AP generates a sounding table associating STAs with RUs for uplink (UL) and downlink (DL). The AP processes the sounding table to create a channel map table and then the AP allocates particular RUs to particular STAs. The STAs then receive and transmit data from and to the AP over the allocated RUs. This approach achieves good throughput while reducing the use of signaling and pilot overhead associated with channel sounding. To avoid interruption of ongoing transmissions, a newly arriving STA is grouped and sounded with other STAs. The protocol includes a joint sounding and data epoch followed by a determination of the channel map table.
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公开(公告)号：US20170311166A1
公开(公告)日：2017-10-26
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
CPC classification number: H04W16/02 , H04L49/201 , H04W52/367 , H04W74/006 , H04W84/12 , H04W88/08
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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Patent Agency Ranking
公开(公告)号：US20220346142A1
公开(公告)日：2022-10-27
申请号：US17239339
申请日：2021-04-23
Applicant: Apple Inc.
Inventor： Yaranama Venkata Ramana DASS , Assaf PORAT , Oren SHANI , Venkateswara Rao MANEPALLI , Paul V. FLYNN
IPC: H04W74/08
Abstract: An approach is described for a wireless device comprising a transceiver and a processor communicatively coupled to the transceiver. The processor is configured to detect a packet for transmission; scan, using the transceiver, a channel during an initial sliding window, the initial sliding window having N symbol durations; determine a power distribution of the initial sliding window based on the channel scan; determine that the channel is occupied during a first time period of the initial sliding window based at least on the power distribution; and determine a second sliding window having a second time period and a third time period. The second time period overlaps with the initial sliding window and a length of the third time period is determined based at least on the power distribution. The processor is further configured to scan, using the transceiver, the channel during the third time period; determine that the channel is idle during the third time period of the second sliding window; and transmit, using the transceiver, the packet to a second wireless device on the channel responsive to the third time period being idle.
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公开(公告)号：US20180014165A1
公开(公告)日：2018-01-11
申请号：US15644481
申请日：2017-07-07
Applicant: Apple Inc.
Inventor： Guoqing LI , Oren SHANI , Christiaan A. HARTMAN , Jarkko L. KNECKT , Syed A. MUJTABA , Matthew L. SEMERSKY , Yaniv DVORY , Hay LEV , Yoel BOGER
Abstract: An access point transmits a trigger frame to a set of electronic devices in a wireless local area network (WLAN). In response to one or more requests to send data, the access point transmits the trigger frame, which includes information specifying an ordered list of electronic devices in the set of electronic devices that are allowed to transmit, and that groups the electronic devices in the ordered list of electronic devices into a first subset of the electronic devices and a second subset of the electronic devices. Subsequently, the access point sequentially receives one or more frames from the ordered list of electronic devices, where a first group of the frames received from at least some of the first subset of the electronic devices use single-user transmission and a second group of frames received from at least some of the second subset of the electronic devices use multi-user transmission.
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公开(公告)号：US20170353921A1
公开(公告)日：2017-12-07
申请号：US15615218
申请日：2017-06-06
Applicant: Apple Inc.
Inventor： Guoqing LI , Oren SHANI , Yong LIU , Christiaan A. HARTMAN , Jarkko L. KNECKT , Joonsuk KIM , Su Khiong YONG
IPC: H04W52/02
Abstract: An access point establishes target wakeup times (TWTs) with one or more associated electronic devices in a WLAN. The access point transitions to a power-saving mode outside of the one or more TWTs. The access point maintains synchronization with the one or more electronic devices, during at least a first TWT in the one or more TWTs, by transmitting, to the one or more electronic devices, a TWT beacon that includes, or in conjunction with, synchronization information. Alternatively or additionally, during at least the first TWT, the access point transmits a multi-user trigger frame that includes the synchronization information to the one or more electronic devices. In response to the multi-user trigger frame, the access point receives data frames from the one or more electronic devices, transmits one or more acknowledgments, and transitions into the power-saving mode during a remainder of at least the first TWT.
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公开(公告)号：US20170311318A1
公开(公告)日：2017-10-26
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
CPC classification number: H04L5/0007 , H04L27/2602 , H04L47/14 , H04W74/06 , H04W84/12
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：US20170237532A1
公开(公告)日：2017-08-17
申请号：US15432758
申请日：2017-02-14
Applicant: Apple Inc.
Inventor： Guoqing LI , Oren SHANI , Matthew L. SEMERSKY , Ashok RANGANATH , Jarkko L. KNECKT , Christiaan A. HARTMAN , Yong LIU , Su Khiong YONG , Joonsuk KIM
IPC: H04L5/00 , H04W72/12 , H04L29/08 , H04L27/26 , H04B7/0452
Abstract: An electronic device communicates frames with an access point (AP) by receiving, from the AP, a frame header that includes information specifying a first set of tones of an OFDMA communication, the first set of tones associated with first resource block subchannels having a first bandwidth used by the AP to transmit a frame payload. The electronic device obtains a second set of tones associated with second resource block subchannels having a second bandwidth that differs from the first bandwidth, and receives the frame payload using the OFDMA communication, the second resource block subchannels, and the second set of tones. Alternatively, an electronic device dynamically switches a channel-access mode when communicating a frame with the AP depending on whether the communication includes a primary 20 MHz channel. In a technique, an MU-PPDU is communicated using a frame via a non-primary 20 MHz channel without using the primary 20 MHz channel.
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