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61.发明申请公开(公告)号：US20150133172A1
公开(公告)日：2015-05-14
申请号：US14078824
申请日：2013-11-13
Applicant: Cisco Technology, Inc.
Inventor： Matthew A. Silverman , Paul J. Stager
IPC: H04W4/02
CPC classification number: H04W4/023 , G01S5/0036 , G01S13/878 , H04B7/0404 , H04B7/086 , H04W24/00 , H04W64/00
Abstract: A particular first wireless device having a plurality of antennas and that is part of a group of a plurality of first wireless devices, transmits to a second wireless device (whose location is to be determined) a packet across the plurality of antennas of the particular first wireless device simultaneously with a plurality of packets transmitted by a corresponding one of other first wireless devices in the group. The packet transmitted by the particular first wireless device uses a subset of a set of subcarriers available for use in the packet such that substantially the entire set of subcarriers are used in the aggregate across the plurality of packets simultaneously transmitted by the plurality of first wireless devices in the group to the second wireless device. The simultaneous reception of the plurality of packets at the second wireless device enables the second wireless device to determine its location.
Abstract translation: 具有多个天线并且是多个第一无线设备的组的一部分的特定的第一无线设备向特定第一无线设备的多个天线中的分组传送到第二无线设备（其位置将被确定） 无线设备与由组中的其他第一无线设备中的相应一个发送的多个分组同时进行。 由特定第一无线设备发送的分组使用可用于分组中的一组子载波的子集，使得基本上整个子载波集合在由多个第一无线设备同时发送的多个分组之间的集合中使用 在组中到第二个无线设备。 在第二无线设备处同时接收多个分组使得第二无线设备能够确定其位置。
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公开(公告)号：US20140140438A1
公开(公告)日：2014-05-22
申请号：US13678849
申请日：2012-11-16
Applicant: CISCO TECHNOLOGY, INC.
Inventor： Matthew A. Silverman , Paul J. Stager , James C. Nicholson
IPC: H04B7/04
CPC classification number: H04B7/0426 , H04B7/0602 , H04L5/0023 , H04W52/42
Abstract: Techniques are presented herein to achieve reduced array gain associated with a transmission made from multiple antennas of a wireless communication device. In accordance with one technique, a wireless communication device is provided having a plurality of transmitters each configured to transmit via a corresponding one of a plurality of antennas. Subcarriers of at least one transmit signal to be weighted across the plurality of transmitters are allocated power so that for each subcarrier, only one transmitter is allocated a maximum power.
Abstract translation: 这里呈现技术以实现与由无线通信设备的多个天线制成的传输相关联的减少的阵列增益。 根据一种技术，提供了具有多个发射机的无线通信设备，每个发射机被配置为经由多个天线中的对应的一个发射。 在多个发射机之间要加权的至少一个发射信号的子载波被分配功率，使得对于每个子载波，只有一个发射机被分配最大功率。
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公开(公告)号：US20220248364A1
公开(公告)日：2022-08-04
申请号：US17167979
申请日：2021-02-04
Applicant: Cisco Technology, Inc.
Inventor： Paul J. Stager , Matthew Aaron Silverman , Mukul Chandail , Manoj Gupta , Swapnil Devendrakumar Shah , Vishal Satyendra Desai
Abstract: A method and system for providing location services at a network edge is described. An AP can receive location information associated with a second AP in a location group. The AP can also receive client location data from the second AP and associated with a first client. From at least the received client location data, the AP can determine a location of the first client. The AP can then send the location of the first client to a location service.
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64.发明申请公开(公告)号：US20200329452A1
公开(公告)日：2020-10-15
申请号：US16380705
申请日：2019-04-10
Applicant: Cisco Technology, Inc.
Inventor： Xu Zhang , Paul J. Stager , Santosh Ghanshyam Pandey , Matthew Aaron Silverman , Abhishek Mukherji
IPC: H04W64/00 , H04W8/02 , H04B17/327 , H04B17/382 , H04W4/02 , H04W4/33
Abstract: Offloading of location computation from a location server to an access point through the use of projections on base phase vectors may be provided. First, an Access Point (AP) may receive a set of two or more base phase vectors from a location server. Next, the AP may measure a measured phase vector for a first signal from a user device. Then, the AP can determine projection values based on a comparison of the measured phase vector to each base phase vector. From these comparisons, the AP can determine a subset of base phase vectors with the highest projection values. The AP can then send the projection values and the subset of base phase vectors to the location server, wherein the location server determines the device location from these projection values and subset of base phase vectors.
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公开(公告)号：US20200326405A1
公开(公告)日：2020-10-15
申请号：US16380668
申请日：2019-04-10
Applicant: Cisco Technology, Inc.
Inventor： Matthew Aaron Silverman , Santosh Ghanshyam Pandey , Paul J. Stager , Xu Zhang , Abhishek Mukherji
Abstract: Determining a device's location in a space in real time is computing intensive. To offload some of the workload in conducting this hyperlocation, the access points in the network conduct some of process in determining the location of a device. The cloud determines a restricted AoA search area based on previous client locations. After this determination, a three-dimensional (3D) AoA search is conducted by each AP in the restricted area (restricted by a range of azimuth directions) for a device. Finally, each AP reports a location(s) for the device, which comprises weights for selected angular sectors. The cloud can then construct a probability heat map for location computation from the weights provided from each AP for the device.
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Patent Agency Ranking
公开(公告)号：US10761177B2
公开(公告)日：2020-09-01
申请号：US15725054
申请日：2017-10-04
Applicant: CISCO TECHNOLOGY, INC.
Inventor： Brian Donald Hart , Paul J. Stager , Santosh Pandey , David Kloper , Dan Lyons , Matthew A. Sliverman
Abstract: In one embodiment, an apparatus includes a processor for processing a plurality of radio frequency chains at a wireless device in a block based modulation environment, recording subcarrier phases and differences between the subcarrier phases, and using the subcarrier phase differences to construct a feature vector for use in angle of arrival calculated positioning of a mobile device, and memory for storing the subcarrier phases and the feature vector.
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公开(公告)号：US10735033B2
公开(公告)日：2020-08-04
申请号：US16171503
申请日：2018-10-26
Applicant: Cisco Technology, Inc.
Inventor： Fred J. Anderson , Paul J. Stager , John M. Blosco , Qing Zhao , David Kloper
Abstract: A wireless communication device is built from a base module and a plurality of front-end modules. Each of the plurality of front-end modules is configured to operate a different one of a plurality of radio frequency services and having a front-end module connector configured to removeably mate with a base module connector of the base module. A particular front-end module is connected to the base module. Upon connection of the particular front-end module to the base module connector, the base module reads information from a memory of the particular front-end module to determine the radio service that the particular front-end module is configured to operate and to supply the control signals to configure and control front-end circuitry of the front-end module to operate the radio service.
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公开(公告)号：US10677885B2
公开(公告)日：2020-06-09
申请号：US16390566
申请日：2019-04-22
Applicant: Cisco Technology, Inc.
Inventor： Matthew A. Silverman , Oscar Bejarano Chavez , Paul J. Stager , David Kloper
Abstract: Techniques are presented herein for computing angle-of-arrival estimates while switching antenna states during a packet unit for the general Orthogonal Frequency Division Multiple Access (OFMDA) case (including a single user). A wireless device computes channel estimates throughout the entire frame and not only during the training symbols. Consequently, the wireless device computes channel estimates for all antennas in its array within a single frame instead of having to wait for multiple frames.
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公开(公告)号：US20200136657A1
公开(公告)日：2020-04-30
申请号：US16171503
申请日：2018-10-26
Applicant: Cisco Technology, Inc.
Inventor： Fred J. Anderson , Paul J. Stager , John M. Blosco , Qing Zhao , David Kloper
Abstract: A wireless communication device is built from a base module and a plurality of front-end modules. Each of the plurality of front-end modules is configured to operate a different one of a plurality of radio frequency services and having a front-end module connector configured to removeably mate with a base module connector of the base module. A particular front-end module is connected to the base module. Upon connection of said particular front-end module to the base module connector, the base module reads information from a memory of said particular front-end module to determine the radio service that the particular front-end module is configured to operate and to supply the control signals to configure and control front-end circuitry of the front-end module to operate the radio service.
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70.发明申请公开(公告)号：US20190245593A1
公开(公告)日：2019-08-08
申请号：US16383915
申请日：2019-04-15
Applicant: Cisco Technology, Inc.
Inventor： Brian D. Hart , Paul J. Stager , David Kloper , Jie Cheng Jiang
IPC: H04B7/0452 , H04B7/024
CPC classification number: H04B7/0452 , H04B7/024 , H04W84/12 , H04W88/08
Abstract: A wireless access point device wirelessly communicates with a plurality of wireless client devices. The wireless access point includes a central processor subsystem and a plurality of transceiver devices each including a plurality of antennas, and a plurality of radio transceivers, each of the plurality of transceiver devices configured for deployment throughout a coverage area, each transceiver device being connected to the central processor subsystem via a respective cable. The central processor subsystem distributes in-phase and quadrature baseband samples across the plurality of transceiver devices associated with traffic to be transmitted and received via the plurality of transceiver devices in one or more frequency bands so as to synthesize a wideband multiple-input multiple-output transmission channel and a wideband multiple-input multiple-output reception channel. The access point transmit and receive functions are “split” or partitioned across the plurality of transceivers devices.
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