| 摘要 |
<p>A method is provided for deriving information about location areas in a cellular mobile radio system that comprises a fixed part providing radio coverage in a plurality of cells logically grouped into location areas, and mobile stations for communicating with the fixed part of the system. In such systems, each mobile station passes location update messages to the fixed part of the system, at least upon changing location areas, to enable the fixed part to keep track of the mobile stations. The present method involves monitoring these location update messages to extract location-area related data, and then combining (30, 31, 32) the data extracted from many such messages to produce location-area related information such as lists of cells (35) making up each location area, the identity of gateway cells in each location area, lists (36) of adjacent location areas, and the identity of the most used location areas. <IMAGE></p> |
