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    • 1. 发明专利
    • METHOD AND SYSTEM FOR REQUESTING A SERVICE
    • CA2712193A1
    • 2011-02-14
    • CA2712193
    • 2010-08-05
    • ZHANG YANGLI XIN
    • ZHANG YANGLI XIN
    • H04W4/04
    • A method and system for enabling users to request a service are disclosed, the system comprising a plurality of wireless transmitters, each of the plurality of wireless transmitters comprising a user interface for providing a request from a user from one of at least two services; a wireless transmitter identification providing unit; a wireless signal generating unit for receiving said request from said user and said wireless transmitter identification and generating a corresponding wireless signal; and a receiver in wireless communication with the plurality of wireless transmitters, the receiver comprising a wireless receiving unit for receiving incoming wireless signals from corresponding given wireless transmitters and for providing corresponding received requests and corresponding received wireless transmitter identifications; a display unit operatively connected to the wireless receiving unit, said display unit for displaying a given number of the corresponding received wireless transmitter identifications together with a visual indication of associated requests, said display unit further displaying an indication of an amount of undisplayed requests.
    • 9. 发明申请
    • DETECTING MULTIPATH AND DETERMINING POSITIONING MEASUREMENT UNCERTAINTY
    • 检测多路径和确定定位不确定度
    • WO2014047824A1
    • 2014-04-03
    • PCT/CN2012/082132
    • 2012-09-27
    • TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)SIOMINA, IanaZHANG, Yang
    • SIOMINA, IanaZHANG, Yang
    • H04W24/00
    • H04W4/02G01S5/0205G01S5/021G01S5/0215
    • Techniques are disclosed for determining measurement uncertainty of and/or multipath effects on positioning measurements, based on the residual deviations between timing measurements and high-accuracy location results. An example method begins with collecting (510) a plurality of timing measurements or ranging measurements, or both, each measurement corresponding to at least one anchor node antenna having a known location. A measurement deviation is determined (520) for each measurement by comparing the measurement to a corresponding reference location. The measurement deviations are used (530) to estimate measurement quality for one or more subsequent positioning measurements, and/or uncertainty associated with one or more subsequent positioning estimates, and/or an effect of multipath on subsequent positioning measurements or estimates. In some embodiments, a covariance matrix is calculated from the measurement deviations and is used to determine statistical information or multipath effects for measurements corresponding to a particular one of the anchor node antennas.
    • 公开了基于定时测量和高精度位置结果之间的残余偏差来确定定位测量的测量不确定性和/或多路径效应的技术。 示例性方法开始于对与具有已知位置的至少一个锚节点天线进行对应的多个定时测量或测距测量或者两者进行收集(510)。 通过将测量与相应的参考位置进行比较来确定每个测量的测量偏差(520)。 使用测量偏差(530)来估计一个或多个后续定位测量的测量质量,和/或与一个或多个随后的定位估计相关联的/或不确定性,和/或多路径对随后的定位测量或估计的影响。 在一些实施例中,根据测量偏差计算协方差矩阵,并且用于确定对应于锚节点天线中的特定一个的测量的统计信息或多径效应。