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    • 1. 发明申请
    • LOCATION UPDATE SCHEDULING
    • 位置更新时间表
    • WO2016144298A1
    • 2016-09-15
    • PCT/US2015/019213
    • 2015-03-06
    • HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP
    • SEN, SouvikKIM, Kyu-HanKIM, Dongho
    • H04W64/00H04W4/02
    • H04W64/00G01S5/0205H04W4/029
    • Examples associated with location update scheduling are disclosed. One example includes dividing a physical space into regions. Vertices of the regions correspond to access points spread throughout the physical space. A conflict graph is generated for the regions. Nodes in the conflict graph correspond to the regions, and edges indicate conflicts between the regions. The conflict graph is colored so that adjacent nodes in the conflict graph have different colors while limiting the number of colors in the conflict graph. Sequential location update queries are scheduled across access points. Location update queries are concurrently initiated by access points that correspond to vertices of regions sharing colors in the conflict graph.
    • 公开了与位置更新调度相关联的示例。 一个例子包括将物理空间划分为区域。 区域的顶点对应于遍及整个物理空间的接入点。 为区域生成冲突图。 冲突图中的节点对应于区域,边缘表示区域之间的冲突。 冲突图被着色,使得冲突图中的相邻节点具有不同的颜色,同时限制了冲突图中的颜色数量。 连续位置更新查询在接入点之间进行调度。 位置更新查询由对应于在冲突图中共享颜色的区域的顶点的访问点同时发起。
    • 4. 发明申请
    • CORRECTING TIME-OF-FLIGHT MEASUREMENTS
    • 校正飞行时间的测量
    • WO2016186618A1
    • 2016-11-24
    • PCT/US2015/031110
    • 2015-05-15
    • HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP
    • SEN, SouvikKIM, Dongho
    • G06Q50/30G06Q10/10
    • G01S5/021G01S5/0221G01S5/10G06Q10/10G06Q50/30H04B17/318H04W52/52H04W88/08
    • 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.
    • 在一个示例中,用于校正飞行时间测量的方法包括接收多个飞行时间测量并确定飞行时间测量是否涉及强信号客户端,弱信号客户端或优选的飞行时间测量 信号客户端。 如果飞行时间测量与强信号客户端或弱信号客户端相关,则该方法确定飞行时间测量是否构成两个不同的分布。 如果飞行时间测量值构成两个不同的分布,则确定每个分布的平均值。 如果平均值与归因于自动增益控制处理的预定时间延迟相差,则使用与具有较低平均值的分布相对应的飞行时间测量。 如果平均值差异小于归因于自动增益控制处理的预定时间延迟,则使用对应于两个分布的飞行时间测量。
    • 5. 发明申请
    • DETERMINING A LOCATION OF A DISCONNECTED DEVICE
    • 确定断开装置的位置
    • WO2016085444A1
    • 2016-06-02
    • PCT/US2014/067069
    • 2014-11-24
    • HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP
    • SEN, SouvikKIM, Dongho
    • H04W64/00G01S5/02
    • H04W64/003G01S5/14G01S13/767G01S13/878H04W64/00H04W84/12
    • 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.
    • 这里描述了用于确定断开的设备的位置的技术。 在一个示例中,一种方法包括指示第一接入点嗅探一个无线信道用于来自断开的设备的探测请求分组,并且在从第一接入点接收到探测请求分组之后指示第一接入点向断开的设备发送距离探测分组 断开连接的设备。 该方法还包括从第一接入点接收从接收的探测请求分组确定的断开的设备的MAC地址。 在从第一接入点接收到MAC地址之后,指示一组接入点向被断开的设备发送距离探测分组。 该方法还包括从第一接入点和接入点组接收与断开的设备相关联的飞行时间测量。 可以使用飞行时间测量来确定断​​开连接的设备的位置。