-
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.
-
公开(公告)号：US09907020B2
公开(公告)日：2018-02-27
申请号：US15307546
申请日：2014-06-10
Applicant: Hewlett Packard Enterprise Development LP
Inventor： Souvik Sen , Dongho Kim
CPC classification number: H04W52/0235 , H04W40/005 , H04W52/0229 , H04W88/02 , H04W88/08 , Y02D70/00 , Y02D70/142 , Y02D70/23
Abstract: Example implementations relate to an access point. One example apparatus includes a transceiver and a processor. The processor is to instruct the transceiver to transmit a first wake up message to a client device at a first transmission rate via a wireless network. The processor, in response to receiving a sleep message from the client device via the transceiver, is to instruct the transceiver to transmit a second wake up message to the client device at a second transmission rate that is greater than the first transmission rate.
-
公开(公告)号：US20180192392A1
公开(公告)日：2018-07-05
申请号：US15876242
申请日：2018-01-22
Applicant: Hewlett Packard Enterprise Development LP
Inventor： Souvik Sen , Dongho Kim
CPC classification number: H04W64/003 , G01S5/14 , G01S13/767 , G01S13/878 , H04W64/00 , H04W84/12
Abstract: Described herein are techniques for determining a location of a disconnected device. In an example, a method includes instructing a first access point to sniff a wireless channel for probe request packets from disconnected devices, and instructing the first access point to send a distance-probing packet to a disconnected device after receiving a probe request packet from the disconnected device. The method further includes receiving, from the first access point, a MAC address of the disconnected device determined from the received probe request packet. After receiving the MAC address from the first access point, a group of access points is instructed to send distance-probing packets to the disconnected device. The method further includes receiving, from the first access point and the group of access points, time-of-flight measurements associated with the disconnected device. A location of the disconnected device can be determined using the time-of-flight measurements.
-
公开(公告)号：US09877300B2
公开(公告)日：2018-01-23
申请号：US15500617
申请日：2014-11-24
Applicant: Hewlett Packard Enterprise Development LP
Inventor： Souvik Sen , Dongho Kim
CPC classification number: H04W64/003 , G01S5/14 , G01S13/767 , G01S13/878 , H04W64/00 , H04W84/12
Abstract: Described herein are techniques for determining a location of a disconnected device. In an example, a method includes instructing a first access point to sniff a wireless channel for probe request packets from disconnected devices, and instructing the first access point to send a distance-probing packet to a disconnected device after receiving a probe request packet from the disconnected device. The method further includes receiving, from the first access point, a MAC address of the disconnected device determined from the received probe request packet. After receiving the MAC address from the first access point, a group of access points is instructed to send distance-probing packets to the disconnected device. The method further includes receiving, from the first access point and the group of access points, time-of-flight measurements associated with the disconnected device. A location of the disconnected device can be determined using the time-of-flight measurements.
-
公开(公告)号：US10698072B2
公开(公告)日：2020-06-30
申请号：US15571658
申请日：2015-05-15
Applicant: Hewlett Packard Enterprise Development LP
Inventor： Souvik Sen , Dongho Kim
Abstract: In an example, a method for correcting time-of-flight measurements includes receiving a plurality of time-of-flight measurements and determining whether the time-of-flight measurements relate to a strong signal client, a weak signal client, or a preferred signal client. If the time-of-flight measurements relate to a strong signal client or a weak signal client, the method determines whether the time-of-flight measurements constitute two distinct distributions. If the time-of-flight measurements constitute two distinct distributions, a mean value for each distribution is determined. If the mean values differ by a predetermined time delay attributable to automatic gain control processing, the time-of-flight measurements corresponding to the distribution having the lower mean value are used. If the mean values differ by less than the predetermined time delay attributable to automatic gain control processing, the time-of-flight measurements corresponding to both distributions are used.
-
Patent Agency Ranking
公开(公告)号：US20180143285A1
公开(公告)日：2018-05-24
申请号：US15571658
申请日：2015-05-15
Applicant: Hewlett Packard Enterprise Development LP
Inventor： Souvik Sen , Dongho Kim
IPC: G01S5/02 , H04B17/318 , G01S5/10
CPC classification number: G01S5/021 , G01S5/0221 , G01S5/10 , G06Q10/10 , G06Q50/30 , H04B17/318 , H04W52/52 , H04W88/08
Abstract: In an example, a method for correcting time-of-flight measurements includes receiving a plurality of time-of-flight measurements and determining whether the time-of-flight measurements relate to a strong signal client, a weak signal client, or a preferred signal client. If the time-of-flight measurements relate to a strong signal client or a weak signal client, the method determines whether the time-of-flight measurements constitute two distinct distributions. If the time-of-flight measurements constitute two distinct distributions, a mean value for each distribution is determined. If the mean values differ by a predetermined time delay attributable to automatic gain control processing, the time-of-flight measurements corresponding to the distribution having the lower mean value are used. If the mean values differ by less than the predetermined time delay attributable to automatic gain control processing, the time-of-flight measurements corresponding to both distributions are used.
-
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.
-
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。
-
公开(公告)号：US10383084B2
公开(公告)日：2019-08-13
申请号：US15876242
申请日：2018-01-22
Applicant: Hewlett Packard Enterprise Development LP
Inventor： Souvik Sen , Dongho Kim
Abstract: Described herein are techniques for determining a location of a disconnected device. In an example, a method includes instructing a first access point to sniff a wireless channel for probe request packets from disconnected devices, and instructing the first access point to send a distance-probing packet to a disconnected device after receiving a probe request packet from the disconnected device. The method further includes receiving, from the first access point, a MAC address of the disconnected device determined from the received probe request packet. After receiving the MAC address from the first access point, a group of access points is instructed to send distance-probing packets to the disconnected device. The method further includes receiving, from the first access point and the group of access points, time-of-flight measurements associated with the disconnected device. A location of the disconnected device can be determined using the time-of-flight measurements.
-
公开(公告)号：US20170055217A1
公开(公告)日：2017-02-23
申请号：US15307546
申请日：2014-06-10
Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP
Inventor： Souvik Sen , Dongho Kim
CPC classification number: H04W52/0235 , H04W40/005 , H04W52/0229 , H04W88/02 , H04W88/08 , Y02D70/00 , Y02D70/142 , Y02D70/23
Abstract: Example implementations relate to an access point. One example apparatus includes a transceiver and a processor. The processor is to instruct the transceiver to transmit a first wake up message to a client device at a first transmission rate via a wireless network. The processor, in response to receiving a sleep message from the client device via the transceiver, is to instruct the transceiver to transmit a second wake up message to the client device at a second transmission rate that is greater than the first transmission rate.
Abstract translation: 示例实现涉及接入点。 一个示例性设备包括收发器和处理器。 处理器是指示收发器经由无线网络以第一传输速率向客户端设备发送第一个唤醒消息。 处理器响应于经由收发器从客户端设备接收到睡眠消息，是指示收发器以大于第一传输速率的第二传输速率向客户端设备发送第二唤醒消息。
-
-
-
-
-
-
-
-
-
Search Results
10
records
(took 0.016 seconds)
