Satellite position determining method, for e.g. mobile cellular telephone, involves receiving satellite data, calculating distance between mobile device and satellites, and requesting model of navigation to assistance data server by device

摘要

The method involves receiving, through a mobile device, satellite data supplied by four satellites, and calculating a distance between the mobile device and the satellites by the mobile device. A model of navigation to an assistance data server is requested by the mobile device. The model corresponding to satellites which are visible from the mobile device, is determined. The model is either broadcasted by the satellites when the satellites are visible to a reference antenna during the request, or estimated or reconstituted by the server when the satellites are not visible to the antenna. Independent claims are also included for: (1) a method for determining a position of a mobile device including a satellite radio navigation receiver and a cellular radio telephone transceiver, (2) a mobile device including a satellite radio navigation receiver and a cellular radio telephone transceiver.