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    • 3. 发明申请
    • POSITION DETERMINATION USING A WIRELESS SIGNAL
    • 使用无线信号的位置确定
    • WO2011063153A3
    • 2011-07-21
    • PCT/US2010057284
    • 2010-11-18
    • QUALCOMM INCBRUNNER CHRISTOPHERKULIK VICTOR
    • BRUNNER CHRISTOPHERKULIK VICTOR
    • G01S5/02
    • H04W4/023G01S5/0242G01S5/0252G01S19/47G01S19/48H04W4/026H04W4/027H04W24/08
    • A mobile station determines its position using measured parameters of a wireless signal to improve a satellite positioning system (SPS) enhanced dead reckoning based position estimate. The mobile station uses SPS enhanced dead reckoning to estimate a current position. The mobile station receives wireless signals and measures, e.g., received signal strength and/or round trip time, which is compared to a database to derive a wireless signal based position estimate. The SPS enhanced dead reckoning position estimate and the wireless signal based position estimate may then be fused using corresponding confidence levels. The database may be generated and stored in the mobile station. In another embodiment, the database is generated and stored on an online server that may be accessed by mobile stations.
    • 移动台使用无线信号的测量参数来确定其位置,以改进基于位置估计的卫星定位系统(SPS)增强航位推算。 移动台使用SPS增强航位推算来估计当前位置。 移动站接收无线信号并测量例如接收的信号强度和/或往返时间,其与数据库进行比较以导出基于无线信号的位置估计。 SPS增强航位推算位置估计,然后可以使用相应的置信水平来融合基于无线信号的位置估计。 可以生成数据库并将其存储在移动站中。 在另一个实施例中,数据库被生成并存储在可被移动站访问的在线服务器上。
    • 5. 发明申请
    • MAPPING WIRELESS SIGNALS WITH MOTION SENSORS
    • 映射无线信号与运动传感器
    • WO2011050057A1
    • 2011-04-28
    • PCT/US2010/053367
    • 2010-10-20
    • QUALCOMM INCORPORATEDKHORASHADI, BehroozDAS, Saumitra MohanSRIDHARA, VinayAGGARWAL, AlokBRUNNER, Christopher
    • KHORASHADI, BehroozDAS, Saumitra MohanSRIDHARA, VinayAGGARWAL, AlokBRUNNER, Christopher
    • G01S5/02
    • G01S5/0252
    • A displacement device for mapping wireless signal fingerprints includes motion sensors and at least one of a received signal strength indicator (RSSI) sensor and a round trip time (RTT) sensor. The motion sensors may include a pedometer and one or more sensors to receive turn information. The start position of the displacement device is initialized and as the displacement device is moved through an environment, the position of each measurement location is determined using the initialized position and data from the motion sensors. The measurement position along with the RSSI and/or RTT measurement is stored in a database, from which a map can be generated. The position of the access point may be determined using the RSSI measurement or RTT measurement. Additionally, accumulated errors in the measurement position may be monitored and when greater than a threshold, a user may be prompted to reinitialize the position of the displacement device.
    • 用于映射无线信号指纹的位移设备包括运动传感器和接收信号强度指示器(RSSI)传感器和往返时间(RTT)传感器中的至少一个。 运动传感器可以包括计步器和用于接收转向信息的一个或多个传感器。 位移装置的起始位置被初始化,并且当位移装置移动通过环境时,使用来自运动传感器的初始化位置和数据来确定每个测量位置的位置。 测量位置与RSSI和/或RTT测量一起存储在数据库中,从中可以生成映射。 可以使用RSSI测量或RTT测量来确定接入点的位置。 此外,可以监视测量位置中的累积误差,并且当大于阈值时,可以提示用户重新初始化位移装置的位置。