| 摘要 |
<p>An application service provider (ASP1) registered with the home network (10) sends a location request relating to the location of the visiting mobile terminal (MT1) to a location enabling server (H/LES) in the home network (10). Here, the authenticity of the ASP is checked. Then the allowability of the location request is checked by the location enabling server (H/LES) against a plurality of predetermined criteria including privacy setting settable by or in respect of the particular mobile terminal (MT1). If the criteria are satisfied, the authenticated location request is passed to a location server (H/LS) in the home network (10) which determines the network (10A) in which the terminal is roaming and the corresponding address in the VLR in that network (10A). The authenticated location request, with the VRL address, is then passed to the location enabling server (V/LES) in the visited network (10A) and thence to the location server (V/LS) in that network which obtains the location of the terminal. This is then returned to the application service provider (ASP1).</p> |
