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Other cell sites used as reference point to cull satellite ephemeris information for quick, accurate assisted locating satellite location determination
Other cell sites used as reference point to cull satellite ephemeris information for quick, accurate assisted locating satellite location determination
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机译:其他小区站点用作剔除卫星星历信息的参考点,以便快速,准确地辅助定位卫星位置
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摘要
A geometric shape (e.g., an inverted cone) is computed above a given ‘reference point’ defined from locations of cell sites OTHER than the cell site currently servicing a given wireless device, to provide a best-guess as to a near-future location of a mobile wireless device. Locating satellites (e.g., GPS) are culled into a preferred group and communicated to mobile devices within a particular region (e.g., serviced by a particular base station). The culled locating satellites may select visible locating satellites, or more preferably those locating satellites currently within a cone of space above the relevant base station, for communication by a mobile device within the service area of a base station. Thus, cell sites other than the one in use by the relevant wireless device may be specifically used to determine a reference point for culling the ephemeris information used to expedite Assisted GPS location determinations.
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