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公开(公告)号：US20170212212A1
公开(公告)日：2017-07-27
申请号：US15500337
申请日：2014-11-14
Applicant: Hewlett Packard Enterprise Development LP
Inventor： Souvik Sen , Dongho Kim
CPC classification number: G01S5/14 , G01S5/021 , G01S5/0268 , G01S5/10 , G01S13/74 , H04W64/00 , H04W64/003
Abstract: Described herein are techniques for determining a location of a device. In an example, a group of access points may be selected, Time-of-flight (ToF) measurements relative to the device may be received from each of the access points in the group. A respective distance of the device from each access point may be determined using the ToF measurements and a baseToF value. Location coordinates of the device and a new baseToF value may be determined based on the determined distances and the location coordinates of each access point in the group.
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公开(公告)号：US20170059690A1
公开(公告)日：2017-03-02
申请号：US15307884
申请日：2014-06-13
Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP
Inventor： Dongho Kim , Souvik Sen
CPC classification number: G01S5/14 , G01S5/0215 , H04W64/00
Abstract: A method of determining the location of a client device includes selecting sets of four access points (APs) from APs that can communicate with a client device. Each set of four APs forms a quadrilateral that contains the location of the client device. The method further includes selecting a first quadrilateral from quadrilaterals formed by the sets of four APs based on a policy, and, with the first quadrilateral, executing a time-of-flight (ToF)-based distance estimation process to determine the location of the client device.
Abstract translation: 确定客户设备的位置的方法包括从可以与客户端设备通信的AP中选择四个接入点（AP）的集合。 每组四个AP形成包含客户端设备位置的四边形。 该方法还包括基于策略从由四组AP形成的四边形中选择第一四边形，并且与第一四边形一起执行基于飞行时间（ToF）的距离估计处理以确定该位置 客户端设备。
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公开(公告)号：US10972300B2
公开(公告)日：2021-04-06
申请号：US15735225
申请日：2015-06-26
Applicant: Hewlett Packard Enterprise Development LP
Inventor： Jeongkeun Lee , Souvik Sen , Stephane Laroche
Abstract: An example system includes a transceiver. The transceiver communicates multicast frames to a plurality of client devices in a multicast group. The system further includes a controller. The controller determines that a predetermined time has passed since the transceiver most recently sent a unicast transmission to one of the plurality of client devices. The controller instructs the transceiver to transmit a unicast frame to the one of the plurality of client devices. The controller computes a data rate for the one of the plurality of client devices based on the transmission of the unicast frame to the one of the plurality of client devices.
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公开(公告)号：US10587353B2
公开(公告)日：2020-03-10
申请号：US16061933
申请日：2016-02-19
Applicant: Hewlett Packard Enterprise Development LP
Inventor： Sanjib Sur , Ioannis Pefkianakis , Souvik Sen
IPC: H04B7/02 , H04B17/336 , H04B7/0452 , H04B7/06
Abstract: An example communications device includes communications circuitry and control circuitry. The communications circuitry may wirelessly communicate with client devices. The control circuitry may determine signal-to-interference-plus-noise ratios (SINRs) for the client devices based on compressed client-side channel state information received from the client devices. The control circuitry may assign the client devices to multi-user-multiple-input-multiple-output (MU-MIMO) groups based on the SINRs.
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公开(公告)号：US10330772B2
公开(公告)日：2019-06-25
申请号：US15500337
申请日：2014-11-14
Applicant: Hewlett Packard Enterprise Development LP
Inventor： Souvik Sen , Dongho Kim
Abstract: Described herein are techniques for determining a location of a device. In an example, a group of access points may be selected. Time-of-flight (ToF) measurements relative to the device may be received from each of the access points in the group. A respective distance of the device from each access point may be determined using the ToF measurements and a baseToF value. Location coordinates of the device and a new baseToF value may be determined based on the determined distances and the location coordinates of each access point in the group.
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Patent Agency Ranking
公开(公告)号：US10321266B2
公开(公告)日：2019-06-11
申请号：US15117888
申请日：2014-02-10
Applicant: Hewlett Packard Enterprise Development LP
Inventor： Souvik Sen
Abstract: A distance estimate between two nodes may be determined from a path loss exponent and a direct path energy estimate. The direct path energy estimate may be determined from channel state information of a packet received from one of the nodes. The path loss exponent may be determined from the direct path energy estimate and a received signal strength indicator.
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公开(公告)号：US10271250B2
公开(公告)日：2019-04-23
申请号：US15327119
申请日：2014-08-18
Applicant: Hewlett Packard Enterprise Development LP
Inventor： Souvik Sen , Anil Gupta , Manfred R. Arndt
IPC: H04W36/00 , H04W48/16 , H04W48/20 , H04W88/12 , H04B17/318 , H04W4/029 , H04W4/02 , H04W36/30 , H04W36/32 , H04W52/32 , H04W52/38 , H04W48/04
Abstract: Described herein are techniques for selecting a subset of access points. In an example, time-of-flight information and signal strength information associated with a device may be received from multiple access points. A subset of the access points may be selected based on the time-of-flight information, signal strength information, and load information. The subset of access points may be instructed to respond to a probe request from the device.
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公开(公告)号：US20180067189A1
公开(公告)日：2018-03-08
申请号：US15811387
申请日：2017-11-13
Applicant: Hewlett Packard Enterprise Development LP
Inventor： Souvik Sen , Kyu-Han Kim
IPC: G01S5/06 , H04W4/20 , H04W4/02 , G01S5/12 , G01S5/00 , G01S5/02 , H04W12/08 , H04B7/04 , H04W64/00 , H04W48/04
CPC classification number: G01S5/06 , G01S5/0036 , G01S5/02 , G01S5/0284 , G01S5/12 , H04B7/04 , H04W4/023 , H04W4/025 , H04W4/20 , H04W12/08 , H04W48/04 , H04W64/00
Abstract: A signal transmitted from a mobile device is received at an antenna array of a device. Motion information of the mobile device is received from a sensor of the mobile device. A change in the AoA of the signal is computed when the mobile device moves from a first position to a second position. The location of the mobile device relative to the antenna array is determined based on the change in AoA of the signal and the motion information of the mobile device.
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公开(公告)号：US09787333B2
公开(公告)日：2017-10-10
申请号：US14917068
申请日：2013-09-13
Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP
Inventor： Souvik Sen , Jung Gun Lee , Tom Hogan
CPC classification number: H04B1/0475 , H04B7/0426 , H04B7/12 , H04B2001/0416 , H04L27/2626 , H04W52/346
Abstract: A first set of subcarriers having signal-to-noise ratio (SNR) values that exceed a target SNR value is identified at a transmitter. A second set of subcarriers having SNR values below the target SNR value is identified. Power is iteratively reallocated from the first and second set of subcarriers to a third set of subcarriers having SNR values below the target value but closer to the target SNR value than the second set of subcarriers.
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公开(公告)号：US20170223536A1
公开(公告)日：2017-08-03
申请号：US15500585
申请日：2014-09-30
Applicant: Hewlett Packard Enterprise Development LP
Inventor： Anil Gupta , Mili Hoxha , Souvik Sen
CPC classification number: H04W12/06 , G06F21/31 , G06Q30/02 , H04L9/32 , H04L63/0892 , H04L69/40 , H04W12/00516
Abstract: Described herein are techniques for selecting a subset of access points, In an example, a wireless access point stores a plurality of unique keys, each unique key being associated with a respective device. The access point advertises a first service set identifier, the first service set identifier requiring authentication of a device requesting connection at a remotely located authentication server. The access point monitors a connection to the remotely located authentication server, and, in response to the connection going down, advertising a second service set identifier, the second service set identifier requiring authentication of a device requesting connection using the unique key associated with the device requesting connection.
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