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公开(公告)号：US11102036B2
公开(公告)日：2021-08-24
申请号：US16806126
申请日：2020-03-02
Applicant: QUALCOMM Incorporated
Inventor： Didier Johannes Richard Van Nee , Geert Arnout Awater , Maarten Menzo Wentink , Albert Van Zelst , Bin Tian , Stephen Jay Shellhammer , Nitin Ravinder , Muhammed Faruk Gencel
Abstract: This disclosure provides methods, devices and systems for identifying wake-up signals. Some implementations more specifically relate to PHY preamble designs for wake-up signals such as Wake-Up Radio (WUR) packets conforming to IEEE 802.11ba. In some implementations, the preamble designs can include a combination of modulation schemes, data rate indications and length indications enabling devices capable of receiving and decoding wake-up signals to identify the signals as wake-up signals (for example, WUR packets), while ensuring that devices not capable of receiving and decoding wake-up signals identify the wake-up signals as legacy packets, or otherwise not WUR packets.
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公开(公告)号：US10813049B2
公开(公告)日：2020-10-20
申请号：US15905785
申请日：2018-02-26
Applicant: QUALCOMM Incorporated
Inventor： Yanjun Sun , Alfred Asterjadhi , Bin Tian , George Cherian , Stephen Jay Shellhammer , Lochan Verma
Abstract: A method and an apparatus for wireless communication are provided. In one configuration, an apparatus is configured to transmit a wake-up radio (WUR) signal, to determine to transmit a second signal within a SIFS after transmitting the WUR signal to increase medium reuse, and to transmit the second signal within the SIFS after transmitting the WUR signal based on the determination. The second signal may be a data, management, control, ACK, or CF-end frame to enable legacy devices that do not decode the WUR signal to avoid wasted airtime cause by EIFS after the WUR signal. In another configuration, the apparatus is configured to transmit a CTS-to-self frame, to determine to transmit a second signal within a SIFS after transmitting the CTS-to-self frame, and to transmit the second signal based on the determination. The second signal may be a WUR signal or an intermediate signal followed by a WUR signal.
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公开(公告)号：US20200076551A1
公开(公告)日：2020-03-05
申请号：US16559571
申请日：2019-09-03
Applicant: QUALCOMM Incorporated
Inventor： George Cherian , Alfred Asterjadhi , Abhishek Pramod Patil , Sameer Vermani , Bin Tian , Stephen Jay Shellhammer , Lochan Verma , Lin Yang , Jialing Li Chen
Abstract: Methods, systems, and devices for wireless communications are described for coordination between multiple access points (APs) for communications within a transmission opportunity (TxOP). A first AP may gain channel access for a TxOP, and may coordinate with at least a second AP to allow both the first AP and the second AP to transmit and receive wireless communications during the TxOP. The first AP, upon gaining channel access following a successful contention-based channel access procedure, may initiate a scheduling phase with the second AP to schedule of resources within the TxOP for the first and second APs. The first AP may initiate a multi-AP coordinated transmission phase following the scheduling phase, during which both the first AP and second AP may communicate with one or more associated STAs.
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公开(公告)号：US10484228B2
公开(公告)日：2019-11-19
申请号：US16272643
申请日：2019-02-11
Applicant: QUALCOMM Incorporated
Inventor： Stephen Jay Shellhammer , Bin Tian
IPC: H04L27/26 , H04L27/233 , H04W52/02 , H04L27/20
Abstract: Methods, systems, and devices for wireless communication are described. A transmitting device may transmit a wakeup message to another device. The wakeup message may be transmitted using a transmit diversity scheme in accordance with aspects of the present disclosure. The transmit diversity may, for example, include a cyclic shift diversity scheme, a phase rotation scheme, a symbol generation scheme, or combinations thereof. The transmit diversity may in some cases improve a communication range of the wakeup message or otherwise benefit the wireless communications system.
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公开(公告)号：US20190082385A1
公开(公告)日：2019-03-14
申请号：US16111047
申请日：2018-08-23
Applicant: QUALCOMM Incorporated
Inventor： Stephen Jay Shellhammer , Bin Tian , Lochan Verma
IPC: H04W52/02 , H04L27/26 , H04L12/825
Abstract: This disclosure provides systems, methods and apparatuses for indicating a data rate of a packet. The transmitting device may select the data rate of a data field of the packet to be transmitted to the receiving device, and may select a pattern to embed within a preamble of the packet based on the selected data rate. In some implementations, the transmitting device may select a first structure including a first number of instances of a sequence or its logical complement if the selected data rate is a low data rate, and may select a second structure including a second number of instances of the sequence or its logical complement if the selected data rate is a high data rate.
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Patent Agency Ranking
公开(公告)号：US20180304086A1
公开(公告)日：2018-10-25
申请号：US15707379
申请日：2017-09-18
Applicant: QUALCOMM Incorporated
Inventor： Stephen Jay Shellhammer , Osvaldo Alcala , Linhai He
CPC classification number: A61N1/37223 , A61B5/0031 , A61B5/6847 , A61B5/7221 , H04B1/7174 , H04B7/0608
Abstract: Techniques provided herein are directed toward providing a robust downlink communication frame that enables medical implants with highly inaccurate LOs to reliably provide uplink communications to an interrogator device. The downlink communication frame can include, among other things, a plurality of uplink trigger subframes that enable timing of uplink communication of the various medical implants with which the interrogator device is communicating. These uplink trigger subframes may be modulated in a special manner as to distinguish them from other subframes.
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公开(公告)号：US10080125B2
公开(公告)日：2018-09-18
申请号：US14827020
申请日：2015-08-14
Applicant: QUALCOMM Incorporated
Inventor： Stephen Jay Shellhammer , Santosh Paul Abraham , Simone Merlin , Rahul Malik , Alfred Asterjadhi
IPC: H04W8/00 , H04W52/02 , H04W68/00 , H04W12/04 , H04W12/06 , H04W68/02 , H04W12/10 , H04W56/00 , H04W84/12 , H04L29/06 , H04W88/06 , H04W76/27 , H04W76/14
CPC classification number: H04W8/005 , H04L63/123 , H04W12/04 , H04W12/06 , H04W12/10 , H04W52/0209 , H04W52/0216 , H04W52/0219 , H04W52/0225 , H04W52/0229 , H04W56/00 , H04W56/001 , H04W68/005 , H04W68/02 , H04W76/14 , H04W76/27 , H04W84/12 , H04W88/06 , Y02D70/00 , Y02D70/142 , Y02D70/164
Abstract: Certain aspects of the present disclosure generally relate to wireless communications and, more particularly, to ultra low-power paging frames for wake up and discovery. One example apparatus for wireless communications generally includes at least one interface configured to receive via a first radio and a second radio, wherein the at least one interface receives a paging frame from another apparatus via the second radio while the first radio is in a first power state that is lower than a second power state of the second radio; and a processing system configured to take one or more actions based on a command field included in the paging frame.
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公开(公告)号：US20180063784A1
公开(公告)日：2018-03-01
申请号：US15249219
申请日：2016-08-26
Applicant: QUALCOMM Incorporated
Inventor： Santosh Abraham , Linhai He , Stephen Jay Shellhammer , Rashid Ahmed Akbar Attar
IPC: H04W52/02
CPC classification number: H04W52/0216 , A61N1/37252 , G16H40/63 , H04W52/0229 , H04W52/0235 , Y02D70/00 , Y02D70/10 , Y02D70/14 , Y02D70/142 , Y02D70/144 , Y02D70/164 , Y02D70/166 , Y02D70/20 , Y02D70/26
Abstract: Aspects of the subject matter described in this disclosure can be implemented in an efficient wakeup protocol for discovery between two devices. A first device configured to transmit discovery signals can wake up at a predetermined drift time, and a second device configured to receive the discovery signals can wake up at a predetermined wakeup time shortly after the predetermined drift time. The second device can remain awake for a very short duration, where the duration can be based on the packet length of the discovery signal or the interval between each transmitted discovery signal. Upon receiving a discovery signal, the second device can pair with the first device so that further communications can occur between the two devices.
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公开(公告)号：US09648485B2
公开(公告)日：2017-05-09
申请号：US14611932
申请日：2015-02-02
Applicant: QUALCOMM Incorporated
Inventor： Santosh Paul Abraham , Alireza Raissinia , Stephen Jay Shellhammer , George Cherian
CPC classification number: H04W8/005 , H04W48/16 , H04W52/0209 , H04W52/0216 , H04W52/0229 , H04W88/06 , Y02D70/00 , Y02D70/142 , Y02D70/23
Abstract: A method includes transmitting, from an electronic device in a neighbor awareness network (NAN) via a first wireless protocol, a wake up message indicating discovery information associated with a second wireless protocol. The method further includes communicating information via the NAN using the second wireless protocol after transmitting the wake up message.
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公开(公告)号：US09276795B2
公开(公告)日：2016-03-01
申请号：US14258627
申请日：2014-04-22
Applicant: Qualcomm Incorporated
Inventor： Sameer Vermani , Santosh Paul Abraham , Vincent Knowles Jones, IV , Stephen Jay Shellhammer , Didier Johannes Richard Van Nee , Rahul Tandra , Albert Van Zelst
CPC classification number: H04L27/2649 , H04L5/0048 , H04L27/0006 , H04L27/2613 , H04L27/2634 , H04L27/2666 , H04W16/14
Abstract: Methods, systems, and/or devices are provided that permit data transmissions over unused television channels. A method operational in a receiver device, includes monitoring one or more repurposed channels within a television broadcast frequency spectrum for data waveforms, wherein waveforms of different bandwidths coexist within the one or more repurposed channels, and at least a larger waveform has a first bandwidth larger than a channel bandwidth for each repurposed channel. The method also includes receiving a waveform over a repurposed channel from among the one or more repurposed channels, wherein the received waveform has a second bandwidth smaller than the channel bandwidth. The method further includes processing the received waveform by applying a downclocking factor to a clock of the receiver device that causes the receiver device to process the received waveform according to the second bandwidth to obtain a data payload from the received waveform.
Abstract translation: 提供允许在未使用的电视频道上进行数据传输的方法，系统和/或设备。 一种在接收机设备中操作的方法，包括监测用于数据波形的电视广播频谱内的一个或多个重用信道，其中不同带宽的波形在一个或多个重用信道中共存，并且至少较大的波形具有较大的第一带宽 比每个重用通道的通道带宽。 该方法还包括从一个或多个重新利用的信道中的经重用信道接收波形，其中所接收的波形具有小于信道带宽的第二带宽。 该方法还包括通过对接收机设备的时钟施加降频因子来处理所接收的波形，所述时钟使得接收机设备根据第二带宽处理接收到的波形，以从接收到的波形获得数据有效载荷。
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