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    • 6. 发明授权
    • Extending the range of vehicular cellular communications
    • 扩展车载蜂窝通信的范围
    • US08755764B2
    • 2014-06-17
    • US13324126
    • 2011-12-13
    • Ki Hak YiMark A. WisnewskiEray YasanSteven P. SchwinkeSethu K. Madhavan
    • Ki Hak YiMark A. WisnewskiEray YasanSteven P. SchwinkeSethu K. Madhavan
    • H04M11/04
    • H04W76/50H04W4/90
    • A system and method for extending the cellular range of communications using a vehicle telematics unit. The system includes the vehicle telematics unit which is connected with other vehicle hardware and includes wireless cellular capability for communicating from the vehicle to a call center or other facilities via a wireless communication system. The method carried out by the system includes identifying a cellular base station in wireless communication with a vehicle telematics unit; attempting an emergency call via the identified cellular base station using the vehicle telematics unit; determining that a forward link portion of a cellular signal between the vehicle telematics unit and the identified cellular base station lacks sufficient strength to place the attempted emergency call; and transmitting emergency communications via the identified cellular base station using a reverse link portion of the cellular signal based on the determination.
    • 一种用于使用车辆远程信息处理单元来扩展通信的蜂窝范围的系统和方法。 该系统包括与其他车辆硬件连接的车辆远程信息处理单元,并且包括用于经由无线通信系统从车辆通信到呼叫中心或其他设施的无线蜂窝能力。 由系统执行的方法包括:识别与车辆远程信息处理单元无线通信的蜂窝基站; 使用车辆远程信息处理单元通过所识别的蜂窝基站尝试紧急呼叫; 确定车辆远程信息处理单元和所识别的蜂窝基站之间的蜂窝信号的前向链路部分缺乏足够的强度来放置所试图的紧急呼叫; 以及基于所述确定,通过所述蜂窝信号的反向链路部分经由所识别的蜂窝基站发送紧急通信。