Patent ID: 7590424
Filing Date: 2009-09-15
Classification: G01S

Abstract:
1. A method of measuring a position of a mobile communication terminal within an area accommodated by a mobile communication network, comprising: obtaining, from the mobile communication network, a position registration area identifier, wherein the position registration area identifier depends upon a location of the mobile communication terminal within the area accommodated by the mobile communication network; storing the position registration area identifier in a memory of the mobile communication terminal; monitoring a number of changes in the position registration area identifier; detecting that the number of changes in the position registration area identifier since a precise position of the mobile communication terminal was calculated exceeds a threshold; in response to each detection that the number of changes in the position registration area identifier since the precise position of the mobile communication terminal was calculated exceeds the threshold, determining the precise position of the mobile communication terminal, wherein determination of the precise position of the mobile communication terminal comprises: