| 摘要 |
<p>A mobile station (172) is operable in at least a first wireless communication system (123) and in a second wireless communication system (173). The mobile station is operable to send to a System Locator (155) a query signal requesting the System Locator to provide. information relating to connectivity of the mobile station with the first system, wherein the System Locator is accessible via the second system and the mobile station is operable to send said query signal during a period when it is connected by wireless to said second system. The first system may for example be a TETRA system and the second system may for example be a GSM system. A wireless communication architecture of communication systems in which the mobile station may be used and a System Locator for use in such architechture are also described.</p> |
