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    • 1. 发明申请
    • SYSTEM AND METHOD FOR PROVIDING POSITION-BASED INFORMATION TO A USER OF A WIRELESS DEVICE
    • 用于向无线设备的用户提供基于位置的信息的系统和方法
    • WO2002089507A1
    • 2002-11-07
    • PCT/US2002/013769
    • 2002-04-30
    • QUALCOMM INCORPORATED
    • YOUNIS, Saed
    • H04Q7/22
    • G01S19/09G01S19/06H04W4/02
    • In a wireless network including a base station (12), an application server (34), a position determining entity (32) and a mobile phone, a method for using the mobile phone as a vehicle navigation device. The mobile phone (14) detects a user activated request for driving directions and establishes voice and data communications links with the application server (34) through the base station (12). The user vocally transmits the request and a destination location to the application server (34). Using wireless assisted GPS, the mobile phone (14) determines its position and transmits its position to the position determining entity (32). The mobile phone (14) receives the requested driving directions from the application server through the data communications link and provides audible driving directions to the user. In operation, the application server (34) receives the request for position-related information, retrieves the position of the mobile phone (14) from the position determining entity (32) and processes the request for information in accordance with the position of the wireless device (14).
    • 在包括基站(12),应用服务器(34),位置确定实体(32)和移动电话的无线网络中,使用移动电话作为车辆导航设备的方法。 移动电话(14)检测用户激活的驾驶方向请求,并通过基站(12)与应用服务器(34)建立语音和数据通信链路。 用户将请求和目的地位置语音地发送到应用服务器(34)。 使用无线辅助GPS,移动电话(14)确定其位置并将其位置发送到位置确定实体(32)。 移动电话(14)通过数据通信链路从应用服务器接收所请求的驾驶方向,并向用户提供可听见的驾驶方向。 在操作中,应用服务器(34)接收对位置相关信息的请求,从位置确定实体(32)检索移动电话(14)的位置,并根据无线的位置处理信息请求 装置(14)。
    • 3. 发明申请
    • TIME ACQUISITION IN A WIRELESS POSITION DETERMINATION SYSTEM
    • 在无线位置确定系统中获取时间
    • WO2002075349A2
    • 2002-09-26
    • PCT/US2002/007695
    • 2002-03-15
    • QUALCOMM INCORPORATED
    • YOUNIS, Saed
    • G01S5/14
    • G01S19/05G01S19/256
    • A system and method for providing timing information to a wireless device in a position determination system is disclosed. A wireless device includes a reference signal receiver, a signal processor, a wireless communications transceiver and a GPS receiver. The wireless device is adapted to receive a reference signal, extract a snippet of the received reference signal, determine a time o reception for he snippet and transmit the snippet and time of reception to a position determination entity as part of a request for GPS aiding information. The position determination entity includes a timing source, a GPS memory for storing GPS satellite information, a reference signal memory, a communications interface, a signal processor and a control processor. The position determination entity is adapted to continually receive and store a reference signal along with an associated time of reception, and receive the snippet and timestamp transmitted from the wireless device. The position determination entity is further adapted to match the signal snippet to a portion of the stored reference signal, determine a time offset between the timestamp and the time of reception of the matched portion of the stored reference signal, prepare aiding information for the wireless device, synchronize the aiding information to the wireless device using the time offset, and transmit the synchronized aiding information to the wireless device. The wireless device is further adapted to receive the aiding information, including timing information to assist the wireless device in acquiring the GPS signal.
    • 公开了一种用于在位置确定系统中向无线设备提供定时信息的系统和方法。 无线设备包括参考信号接收器,信号处理器,无线通信收发器和GPS接收器。 无线设备适于接收参考信号,提取接收到的参考信号的片段,确定其片段的接收时间,并将该片断和接收时间发送到位置确定实体,作为GPS辅助信息请求的一部分 。 位置确定实体包括定时源,用于存储GPS卫星信息的GPS存储器,参考信号存储器,通信接口,信号处理器和控制处理器。 位置确定实体适于连续地接收和存储参考信号连同相关联的接收时间,并且接收从无线设备发送的片段和时间戳。 位置确定实体还适于将信号片段与存储的参考信号的一部分相匹配,确定所存储的参考信号的匹配部分的时间戳和接收时间之间的时间偏移,为无线装置准备辅助信息 使用时间偏移将辅助信息同步到无线设备,并将同步的辅助信息发送到无线设备。 无线设备还适于接收辅助信息,包括定时信息以帮助无线设备获取GPS信号。
    • 4. 发明申请
    • POSITION DETERMINATION IN A WIRELESS COMMUNICATION SYSTEM WITH DETECTION AND COMPENSATION FOR REPEATERS
    • 无线通信系统中的位置确定与检测与补偿
    • WO2002059638A2
    • 2002-08-01
    • PCT/US2001/045458
    • 2001-11-14
    • QUALCOMM INCORPORATED
    • AMERGA, MessayPATRICK, ChristopherRICK, RolandROWITCH, Douglas, N.YOUNIS, Saed
    • G01S5/02
    • H04W64/00G01S5/0273G01S19/06G01S19/46H04B7/2606
    • Techniques to detect whether or not a remote terminal is under the coverage of a repeater within a wireless communication network, which may be based on (1) a list of base stations expected to be received while under the repeater's coverage, (2) the characterized environment of the repeater, and/or (3) the propagation delays for a transmission received at the remote terminal. Additional ambiguity resulting from being under a repeater's coverage may also be accounted for and/or compensated by (1) discarding time measurements from repeated base stations, (2) adjusting the processing for position estimation to account for the additional ambiguity due to the repeater, (3) computing a series of position estimates based on multiple transmissions received from the same originating base station and selecting the best estimate, and/or (4) computing a series of position estimates based on multiple transmissions from multiple originating base stations and selecting the best estimate.
    • 检测远程终端是否在无线通信网络内的中继器的覆盖范围内的技术,其可以基于(1)预期在中继器的覆盖范围内被接收的基站的列表,(2)特征 中继器的环境,和/或(3)在远程终端接收的传输的传播延迟。 由于处于转发器覆盖范围之外的附加歧义也可以通过(1)从重复的基站中丢弃时间测量来解释和/或补偿,(2)调整位置估计的处理以解决由于中继器引起的额外的模糊性, (3)基于从相同始发基站接收的多个传输并选择最佳估计来计算一系列位置估计,和/或(4)基于来自多个发起基站的多个传输来计算一系列位置估计,并且选择 最好的估计。