Locating satellites (e.g., GPS) are culled into a preferred group having a longest dwell time based on a time passing through an ellipsoid arc path through a cone of space, and communicated to mobile devices within a particular region (e.g., serviced by a particular base station). The base station may...http://www.google.co.uk/patents/US8089401?utm_source=gb-gplus-sharePatent US8089401 - Culled satellite ephemeris information for quick, accurate assisted locating satellite location determination for cell site antennas
