| 摘要 |
A system and method of controlling the delivery of an incoming call in a radio telecommunications network based on the location of a roaming mobile subscriber. The radio telecommunications network includes a home network which comprises a Home Location Register (HLR) and a Service Control Point (SCP). The geographic area covered by the network comprises a plurality of regions, including the home area covered by the home network. Each of the regions comprises one or more service areas, each of which is served by a mobile switching center (MSC) having an identification indicator (MSCID). The plural MSCIDs are clustered into groups, each of which covers a corresponding region. The HLR keeps a subscriber profile which includes a termination service trigger, in addition to keeping track of the subscriber's location. The SCP includes a service profile record which comprises one or more call delivery/termination service options. The service profile record also stores an indication for each group whether an incoming call is to be delivered to the mobile subscriber when roaming in the area or regions covered by the group. A gateway MSC interrogates the home HLR for the subscriber's location when an incoming call is received thereat. The HLR, in turn, depending upon the termination service trigger, queries the SCP for appropriate call delivery options. |
