| 摘要 |
<p>An access control entity (21; 22; 23) for a mobile communication network is described. The network is designed to provide communication services to mobile terminal devices in a plurality of predetermined service regions (SR1-SR5), and has a first part (1) comprising one or more network control entities (11, 12, 13, 14), each network control entity being arranged to control communications in a predetermined set of service regions associated with that network control entity, and a second part (2) comprising one or more access control entities (21, 22, 23), each access control entity being arranged to control access to said first part from one or more service regions associated with that access control entity. An access control entity (21; 22; 23) of the invention is arranged to execute a signal routing procedure for routing signals between a service region and a network control entity associated with that service region, where said signal routing procedure is arranged to determine an identifier of a service region from an identifier of a network control entity and vice versa by looking up an access record that establishes an association between service region identifiers and network control entity identifiers. Furthermore, the access control entity is arranged to execute a record changing procedure for automatically changing from an old access record to a new access record.</p> |
