Access Control in a Communication Network

摘要

A method of controlling access to services of an IP Multimedia Subsystem (IMS) by a user based upon the user's location. In response to a user requesting access to a service, information identifying the user's location is provided to the IMS. Within the IMS, the provided information is compared with authorization information stored in a database. The authorization information includes information identifying prohibited and/or allowed access locations. Dependent upon the result of the comparison, access to the IMS services is allowed or denied.