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公开(公告)号：US09161330B2
公开(公告)日：2015-10-13
申请号：US13970382
申请日：2013-08-19
Applicant: QUALCOMM Incorporated
Inventor： Sandip Homchaudhuri , Carlos Horacio Aldana , Xiaoxin Zhang , James Simon Cho
CPC classification number: H04W64/00
Abstract: A system and method are disclosed for performing ranging operations between two wireless devices without employing cyclic shift diversity (CSD) compensation techniques. For some embodiments, a first wireless device sends a negotiation request frame requesting the second wireless device to respond to subsequently received frames of a specified type using a selected one of the transmit chains in the second wireless device. Thereafter, the first wireless device sends a data frame to the second wireless device to initiate a ranging operation. The second wireless device sends a response frame of the specified type to the first wireless device using the selected one of the transmit chains.
Abstract translation: 公开了一种在两个无线设备之间执行测距操作而不采用循环移位分集（CSD）补偿技术的系统和方法。 对于一些实施例，第一无线设备发送协商请求帧，请求第二无线设备使用第二无线设备中的所选发送链中的所选择的一个响应所接收的指定类型的帧。 此后，第一无线设备向第二无线设备发送数据帧以发起测距操作。 第二无线设备使用所选择的发送链之一向第一无线设备发送指定类型的响应帧。
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公开(公告)号：US09154971B2
公开(公告)日：2015-10-06
申请号：US13794543
申请日：2013-03-11
Applicant: QUALCOMM Incorporated
Inventor： Carlos Horacio Aldana , Sandip Homchaudhuri , Xin He , Xiaoxin Zhang , Ashish Kumar Shukla
CPC classification number: H04W24/00 , G01S5/14 , H04L43/0864 , H04L47/283 , H04W64/003
Abstract: Disclosed are systems, methods and devices for obtaining round trip time measurements for use in location based services. In particular implementations, a fine timing measurement request message wirelessly transmitted by a first transceiver device to a second transceiver device may permit additional processing features in computing or applying a signal round trip time measurement. Such a signal round trip time measurement may be used in positioning operations.
Abstract translation: 公开了用于获得用于基于位置的服务的往返时间测量的系统，方法和装置。 在特定实现中，由第一收发器设备无线传输到第二收发器设备的精确定时测量请求消息可以允许在计算或应用信号往返时间测量时的附加处理特征。 这种信号往返时间测量可以用于定位操作。
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公开(公告)号：US20140355461A1
公开(公告)日：2014-12-04
申请号：US14285584
申请日：2014-05-22
Applicant: QUALCOMM INCORPORATED, INC.
Inventor： Carlos Horacio Aldana , Sandip Homchaudhuri , Xin He , Xiaoxin Zhang , Ashish Kumar Shukla
IPC: H04W24/10
CPC classification number: H04L43/0864 , G01S5/00 , G01S13/767 , H04L5/005 , H04W4/043 , H04W4/30 , H04W24/00 , H04W64/00 , H04W72/082 , H04W76/10
Abstract: Disclosed are systems, methods and devices for obtaining round trip time measurements for use in location based services. In particular implementations, a fine timing measurement request message wirelessly transmitted by a first transceiver device to a second transceiver device may permit additional processing features in computing or applying a signal round trip time measurement. Such a signal round trip time measurement may be used in positioning operations.
Abstract translation: 公开了用于获得用于基于位置的服务的往返时间测量的系统，方法和装置。 在特定实现中，由第一收发器设备无线传输到第二收发器设备的精确定时测量请求消息可以允许在计算或应用信号往返时间测量时的附加处理特征。 这种信号往返时间测量可以用于定位操作。
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公开(公告)号：US12204042B2
公开(公告)日：2025-01-21
申请号：US17195097
申请日：2021-03-08
Applicant: QUALCOMM Incorporated
Inventor： Alexandros Manolakos , Seyong Park , Weimin Duan , Xiaoxin Zhang
Abstract: A communication device includes a processor configured to: transfer, via a transceiver, a wireless data signal within a communication frequency range; determine a capability of the communication device to measure a wireless radar signal received via the transceiver, the wireless radar signal having a frequency within the communication frequency range; transmit, via the transceiver to a network entity, a first indication of the capability of the communication device to measure the wireless radar signal, the first indication being indicative of a transmit power level of the wireless radar signal from a source of the wireless radar signal or a received power level of the wireless radar signal at the communication device; receive, via the transceiver, the wireless radar signal; determine a positioning measurement of the wireless radar signal; and transmit a second indication of the positioning measurement via the transceiver to the network entity.
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公开(公告)号：US12058585B2
公开(公告)日：2024-08-06
申请号：US18326744
申请日：2023-05-31
Applicant: QUALCOMM Incorporated
Inventor： Rishabh Raj , Xiaoxin Zhang , Parthiban Ellappan , Shree Raman Srinivasan , Ravindra Chauhan
Abstract: Disclosed are systems and techniques for performing mapping using radio frequency (RF) sensing. For instance, a server can obtain a first set of RF sensing data and orientation data corresponding to a first wireless device from a plurality of wireless devices. The first set of RF sensing data can be associated with at least one received waveform that is a reflection of a transmitted waveform from a first reflector. Based on the first set of RF sensing data, orientation data, and location data corresponding to the first wireless device, an indoor map can be generated that includes a reference to the reflector.
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Patent Agency Ranking
公开(公告)号：US20230337025A1
公开(公告)日：2023-10-19
申请号：US17722197
申请日：2022-04-15
Applicant: QUALCOMM Incorporated
Inventor： Yanjun Sun , Alireza Raissinia , Stephen Jay Shellhammer , Xiaoxin Zhang , George Cherian , Alfred Asterjadhi , Abhishek Pramod Patil
IPC: H04W24/08
CPC classification number: H04W24/08
Abstract: Methods, systems, and devices for wireless communications are described. In some aspects, two devices may support signaling and messaging designs that support bandwidths that are greater than 160 MHz for ranging null data packets (NDPs). For example, various signaling and messaging designs may support a use of a 320 MHz bandwidth for ranging NDPs as part of a ranging measurement procedure, which may offer greater resolution than narrower bandwidths. The signaling and messaging designs may include one or more updates for a null data packet announcement (NDPA) frame, for a trigger frame, for session negation messages (such as one or both of an initial fine timing measurement (IFTM) frame and an IFTM request (IFTMR) frame), for segmentation techniques for ranging NDPs, or for any combination thereof.
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37.发明申请公开(公告)号：US20220039058A1
公开(公告)日：2022-02-03
申请号：US17366984
申请日：2021-07-02
Applicant: QUALCOMM Incorporated
Inventor： Rishabh RAJ , Ravindra Chauhan , Xiaoxin Zhang
Abstract: Ranging operations may be performed between an initiator device and a responder device using data frames as opposed to fine timing measurement (FTM) frames or Null Data Packet (NDP) frames. An initiator device may request the responder device to perform a ranging operation. The responder device may transmit a data frame to the initiator device and may receive an acknowledgement (ACK) frame from the responder device. The responder device may transmit a second data frame to the initiator device that includes ranging measurement information for the previous message exchange, including a time of departure of the data frame and a time of arrival of the ACK frame. Because data frames are encrypted, the ranging measurement information is provided in a secure manner. Moreover, by including the ranging measurement information in data frames, throughput for the ranging procedure is improved.
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公开(公告)号：US10716024B2
公开(公告)日：2020-07-14
申请号：US14826010
申请日：2015-08-13
Applicant: QUALCOMM Incorporated
Inventor： Carlos Aldana , Xiaoxin Zhang
Abstract: Disclosed are systems, methods and devices for measuring a range between wireless devices using an exchange of messages between devices. For example, wireless transceiver devices may exchange messages transmitted in a wireless communications link to measure a time of flight. Based, at least in part, on the measured time of flight, a location of one of the wireless transceiver devices may be estimated.
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公开(公告)号：US10439785B2
公开(公告)日：2019-10-08
申请号：US15619243
申请日：2017-06-09
Applicant: QUALCOMM Incorporated
Inventor： Javier Frydman , Bernal Arroyo , Xiaoxin Zhang
Abstract: In a particular aspect, an apparatus includes first communication circuitry configured to perform first fine timing measurement (FTM) operations with respect to a device to generate first measurement data. The first FTM operation correspond to a first frequency band. The apparatus includes second communication circuitry configured to perform second FTM operations with respect to the device to generate second measurement data. The second FTM operations correspond to a second frequency band that is different than the first frequency band. The apparatus also includes a processor configured to compare the first measurement data and the second measurement data.
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公开(公告)号：US10277425B2
公开(公告)日：2019-04-30
申请号：US16152998
申请日：2018-10-05
Applicant: QUALCOMM Incorporated
Inventor： Erik David Lindskog , Ning Zhang , Naveen Kumar Kakani , Alireza Raissinia , Xiaoxin Zhang
Abstract: Generally, the described techniques provide for protection mechanisms for sounding training signals transmitted between wireless devices when performing ranging sounding estimation. For example, sounding training signals may be encoded to include a sequence of phase rotations or cyclic shifts to protect the sounding training signal from peer devices. In some cases, encoding information associated with a long training field (LTF) may be transmitted either before or after the LTF is transmitted. Additionally or alternatively, a time delay may be introduced to the sounding training signal, where timing information may be removed from one or more fields of the sounding training signal and the time delay may be appended to an interframe spacing. Alternatively, a frame may be split into multiple frames with the sounding training signal in a first frame, and timing information in a second frame that is offset in time from the first frame.
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