METHOD AND NETWORK ELEMENT FOR PROVIDING A REGISTRATION TO A COMMUNICATION NETWORK FOR A MOBILE TERMINAL

Method for providing a registration to a communication network (70) for a mobile terminal (10), preferably during a mobility management procedure (80), comprising the steps of: - receiving a registration request (201, 301; 401) of the mobile terminal (10) at a network element (40) of the communication network (70), wherein the registration request (201, 301, 401) comprises registration information of the mobile terminal (10) and/or a user of the mobile terminal (10); - sending a query (203, 303, 403) from the network element (40) to a credit database (60), wherein the query (203, 303, 403) comprises at least partially the registration information from the registration request (201, 301, 401); - evaluating by the credit database (60) whether the mobile terminal has a valid budget based on the at least partially registration information of the query (203, 303, 403) and sending a query answer (205, 305, 405) as a result of the evaluation (204, 304, 404) to the network element (40), wherein for a negative result the query answer (205, 305, 405) comprises at least one reason of rejection; and - sending a request answer (207, 307, 407) from the network element (40) to the mobile terminal (10) in response to the registration request (201, 301, 401), wherein the registration request (201, 301, 401) is acknowledged or wherein the registration request (201, 301, 401) is rejected together with the at least one reason of rejection. The invention further relates to a network element for providing a registration to a communication network for a mobile terminal, preferably during a mobility management procedure, which is particularly adapted to perform the method steps according to the invention performed by such a network element.