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公开(公告)号：US20170230860A1
公开(公告)日：2017-08-10
申请号：US15428959
申请日：2017-02-09
Applicant: Apple Inc.
Inventor： Guoqing LI , Christiaan A. HARTMAN , Oren SHANI , Matthew L. SEMERSKY , Joonsuk KIM , Jarkko KNECKT , Ashok RANGANATH , Yong LIU , Su Khiong YONG
CPC classification number: H04W28/0278 , H04W84/12
Abstract: A wireless local area network (WLAN) station (STA) reports, with a medium access control (MAC) frame, a buffer status of an urgent traffic identifier (TID) to a second STA. In some embodiments, the second STA is also an access point (AP). The delay in reporting is reduced by providing a buffer status report for the urgent TID in a data frame being transmitted to carry data for a current TID. The buffer status report, in some embodiments, provides the value of the urgent TID. In some embodiments, the buffer status report provides an indication of the amount of data in a buffer corresponding to the urgent TID. In some embodiments, the buffer status report is based on an aggregated measure of more than one buffer with data awaiting transmission. The transmission of the MAC frame, in some embodiments, is unsolicited.
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12.发明申请公开(公告)号：US20160330742A1
公开(公告)日：2016-11-10
申请号：US15147443
申请日：2016-05-05
Applicant: Apple Inc.
Inventor： Guoqing LI , Joonsuk KIM , Christiaan A. HARTMAN , Yong LIU , Chiu Ngok E. WONG , Syed Aon MUJTABA , Su Khiong YONG
CPC classification number: H04W72/0453 , H04B7/0452 , H04L1/18 , H04L5/0007 , H04L5/0037 , H04L5/0055 , H04W84/12
Abstract: Managing orthogonal frequency division multiple access (OFDMA) uplink acknowledgements is described herein. An example system can include an interface circuit to generate a physical layer convergence protocol data unit (PPDU) including a physical layer preamble, a first sub-channel field corresponding to a first station, and a second sub-channel field corresponding to a second station. The first sub-channel field can carry a first unicast trigger corresponding to the first station, and the second sub-channel field can carry a second unicast trigger corresponding to the second station. The interface circuit can also transmit the PPDU to the first and second stations.
Abstract translation: 本文描述管理正交频分多址（OFDMA）上行链路确认。 示例系统可以包括用于生成包括物理层前同步码，对应于第一站的第一子信道字段和对应于第二站的第二子信道字段的物理层汇聚协议数据单元（PPDU）的接口电路 。 第一子信道字段可以携带与第一站相对应的第一单播触发，并且第二子信道字段可以携带对应于第二站的第二单播触发。 接口电路还可以将PPDU发送到第一和第二站。
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公开(公告)号：US20160323820A1
公开(公告)日：2016-11-03
申请号：US15142212
申请日：2016-04-29
Applicant: Apple Inc.
Inventor： Chiu Ngok E. WONG , Syed A. MUJTABA , Christiaan A. HARTMAN , Joonsuk KIM
CPC classification number: H04W52/0209 , H04L5/0055 , H04W28/14 , H04W40/005 , H04W40/244 , H04W52/0216 , H04W52/0229 , H04W84/12 , H04W88/02 , H04W88/08 , Y02D70/1262 , Y02D70/1264 , Y02D70/142 , Y02D70/144 , Y02D70/166 , Y02D70/22 , Y02D70/26
Abstract: A station (STA) of a wireless local area network (WLAN) transitions implicitly between power management (PM) modes or PM states, without providing an explicit indication of the PM mode/state change to an access point (AP) of the WLAN. Transitions include changes between an active mode and a power save (PS) mode, or between an awake state and a doze state of the PS mode. Transitions occur immediately after receipt of a beacon indicating pending data for the STA, after an offset time indicated in the beacon, or at a specific wake time negotiated with the AP. After data reception is complete, the STA transitions implicitly to the PS mode or a doze state of the PS mode, after a power save inactivity timeout period or after receiving an indication that data transmission is complete.
Abstract translation: 无线局域网（WLAN）的站（STA）在功率管理（PM）模式或PM状态之间隐含地转换，而不提供对WLAN的接入点（AP）的PM模式/状态改变的明确指示。 转换包括有源模式和省电（PS）模式之间或PS模式的唤醒状态和瞌睡状态之间的变化。 在信标指示的偏移时间之后或与AP协商的特定唤醒时间之后，在接收到指示STA的等待数据的信标之后立即发生转换。 在数据接收完成之后，STA在省电不活动超时时段之后或在接收到数据传输完成的指示之后，隐含地转换到PS模式或PS模式的打盹状态。
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公开(公告)号：US20200053733A1
公开(公告)日：2020-02-13
申请号：US16422669
申请日：2019-05-24
Applicant: Apple Inc.
Inventor： Guoqing LI , Jarkko L. KNECKT , Christiaan A. HARTMAN , Yong LIU , Su Khiong YONG
IPC: H04W72/04
Abstract: A basic bandwidth wireless local area network (WLAN) device or station (STA) is assigned to a secondary channel. The basic bandwidth STA may be a 20 MHz STA. On the secondary channel, the basic bandwidth STA operates in a wideband mode recovering received data transmitted from an access point (AP) as part of a high bandwidth physical layer protocol data unit (PPDU). The STA and the AP can be members of a basic service set (BSS). The high bandwidth PPDU may be, for example, a 40 MHz, 60 MHz, or 80 MHz PPDU. Once on the secondary channel, the STA relies on the AP to perform channel sensing and scheduling activities, thus reducing power consumption at the STA and increasing the efficiency of the BSS. Several signaling formats are provided for indicating the secondary channel that the STA is assigned to or requests to move to.
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公开(公告)号：US20190124593A1
公开(公告)日：2019-04-25
申请号：US16135378
申请日：2018-09-19
Applicant: Apple Inc.
Inventor： Chiu Ngok E. WONG , Syed A. MUJTABA , Christiaan A. HARTMAN , Joonsuk KIM
Abstract: A station (STA) of a wireless local area network (WLAN) transitions implicitly between power management (PM) modes or PM states, without providing an explicit indication of the PM mode/state change to an access point (AP) of the WLAN. Transitions include changes between an active mode and a power save (PS) mode, or between an awake state and a doze state of the PS mode. Transitions occur immediately after receipt of a beacon indicating pending data for the STA, after an offset time indicated in the beacon, or at a specific wake time negotiated with the AP. After data reception is complete, the STA transitions implicitly to the PS mode or a doze state of the PS mode, after a power save inactivity timeout period or after receiving an indication that data transmission is complete.
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Patent Agency Ranking
公开(公告)号：US20170347370A1
公开(公告)日：2017-11-30
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
CPC classification number: H04W74/006 , H04W84/12 , Y02D70/1242 , Y02D70/1262 , Y02D70/1264 , Y02D70/14 , Y02D70/142 , Y02D70/144 , Y02D70/166 , Y02D70/20 , Y02D70/22 , Y02D70/26
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：US20170257888A1
公开(公告)日：2017-09-07
申请号：US15449652
申请日：2017-03-03
Applicant: Apple Inc.
Inventor： Jarkko KNECKT , Guoqing LI , Christiaan A. HARTMAN , Joonsuk KIM
IPC: H04W74/08
CPC classification number: H04W74/0816 , H04W84/12
Abstract: Determining wireless local area network (WLAN) channel medium usage information by WLAN access points (APs) and WLAN stations (STAs) is disclosed. A new medium access control (MAC) duration field in a request to send (RTS) message provides a duration value to be conveyed in a subsequent clear to send (CTS) message. A channel or bandwidth can then be quickly used if an addressed STA does not respond to the RTS message. Also, a STA recognizes an unexpected silence and accesses the medium when a trigger frame is followed by a CTS timeout interval. In a third embodiment, an AP requests that STAs monitor particular channels to obtain network allocation vector (NAV) information. The STAs then respond (or informatively, do not respond) to RTS messages; thus, allowing the AP and other listening devices to determine channel medium information. The AP can then schedule data exchanges based on the determined information.
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公开(公告)号：US20170126461A1
公开(公告)日：2017-05-04
申请号：US15336728
申请日：2016-10-27
Applicant: Apple Inc.
Inventor： Guoqing LI , Christiaan A. HARTMAN , Joonsuk KIM , Su Khiong YONG , Yong LIU
Abstract: A wireless local area network station (STA) changes a receiver operating mode (ROM) and saves power by influencing when a ROM-conforming access point (AP) transmission takes place. The STA evaluates candidate delay regimes after a negotiation exchange with the STA. The STA then instructs the AP of a selected delay regime which the AP is permitted to use when transmitting data according to the changed ROM. The ROM can involve a change in the system bandwidth demodulated by the STA and/or the number of spatial streams demodulated by the STA. The delay regime can allow the AP to transmit with little or no delay based on the changed ROM, or the delay regime may require a fixed time delay before the AP transmits according to the changed ROM.
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公开(公告)号：US20170041798A1
公开(公告)日：2017-02-09
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
CPC classification number: H04W74/0816
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.
Abstract translation: 本文公开了一种系统，方法和计算机程序产品实施例，其使得能够在高效率（HE）站处实现空间重用机会，并且使用发送请求和/或清除至 发送（RTS和/或CTS）帧。 例如，该方法可以包括接收具有指定空间重用信息的重定义字段的RTS帧。 可以基于RTS帧设置NAV。 该方法可以确定在短帧间间隔（SIFS）之后的阈值时间内是否接收到第二帧。 最后，该方法可以基于在阈值时间内是否接收到第二帧来重置NAV。
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公开(公告)号：US20250016550A1
公开(公告)日：2025-01-09
申请号：US18894312
申请日：2024-09-24
Applicant: Apple Inc.
Inventor： Guoqing LI , Christiaan A. HARTMAN , Yong LIU , Jarkko L. KNECKT
IPC: H04W8/26 , H04L61/503 , H04L61/5038 , H04L101/622 , H04W76/11
Abstract: Some embodiments of this disclosure include apparatuses and methods for implementing discovery frames and group addressed frames communication. For example, some embodiments relate to a method including generating a first frame to be transmitted to a first electronic device. An association identifier (AID) value of the first frame is set to a first value to indicate that the first frame is an individually addressed frame addressed to the first electronic device. The method further includes generating a second frame to be transmitted to a group of one or more electronic devices. An AID value of the second frame is set to a second value different from the first value. The method also includes transmitting the first frame and the second frame.
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