Method For Indicating A UE That It Must Register

Abstract

The invention proposes a method for controlling a network, wherein the networks offers services to registered users, the method comprising the steps of receiving (A 1 ) a service request from network device (UE) of a user, checking whether the user is registered or not, and if the user is not registered, generating a response message including a warn information and sending (A 2 ; B 3 to B 4 ) the response message to the network device (UE) of the user. The invention also proposes a corresponding network device. In this way, a user is informed that he has to register before he can obtain any services from the network.

1 . A method for controlling a network, wherein the networks offers services to registered users, the method comprising the steps of
 receiving (A 1 ; B 1 , B 2 ) a service request from network device (UE) of a user,   checking whether the user is registered or not, and   if the user is not registered, generating a response message including a warn information and sending (A 2 ; B 3  to B 4 ) the response message to the network device (UE) of the user.   
     
     
         2 . The method according to  claim 1 , wherein the response message is a SIP (Session Initiation Protocol) response. 
     
     
         3 . The method according to  claim 2 , wherein the SIP response is a 403 Forbidden response. 
     
     
         4 . The method according to  claim 1 , wherein the warn information comprises a warn-text. 
     
     
         5 . The method according to  claim 4 , wherein the warn-text is a predefined warn-text. 
     
     
         6 . The method according to  claim 1 , wherein the warn information comprises a predefined warn-code. 
     
     
         7 . The method according to  claim 1 , further comprising the step of triggering (A 3 ; B 5 ) an automatic registration in the network device (UE) of the user. 
     
     
         8 . The method according to  claim 1 , further comprising the step of checking whether the user had a valid registration before or not,
 wherein in case the user had no valid registration before, in the generating step, the information that a registration is required is inserted into the warn information.   
     
     
         9 . The method according to  claim 1 , further comprising the steps of
 checking whether the user had a valid registration before or not and whether a de-registration of the user had been performed, and   wherein in case the user had a valid registration before and a de-registration of the user had been performed, in the generating step, the information that a re-registration is required is inserted into the warn information.   
     
     
         10 . The method according to  claim 8 , wherein the network is a third generation network, and wherein the generating step is performed in a proxy call state control function (P-CSCF). 
     
     
         11 . The method according to  claim 9 , wherein the network is a third generation network, and wherein the generating step is performed in a serving call state control function (S-CSCF). 
     
     
         12 . A network control device for controlling a network, wherein the networks offers services to registered users, the device is adapted
 to receive a service request, to check whether a user requesting the service is registered or not, and generate a response message containing a warn information to the user, in case the user is not registered.   
     
     
         13 . The device according to  claim 12 , wherein the response message is a SIP (Session Initiation Protocol) response. 
     
     
         14 . The device according to  claim 13 , wherein the SIP response is a 403 Forbidden response. 
     
     
         15 . The device according to  claim 12 , wherein the warn information comprises a warn-text. 
     
     
         16 . The device according to  claim 15 , wherein the warn-text is a predefined warn-text. 
     
     
         17 . The device according to  claim 12 , wherein the warn information comprises a predefined warn-code. 
     
     
         18 . The device according to  claim 12 , wherein the device is adapted to check whether the user had a valid registration before or not, and, in case the user had no valid registration before, to insert into the warn information the information that a registration is required. 
     
     
         19 . The device according to  claim 12 , wherein the device is adapted to check whether the user had a valid registration before or not and to check whether a de-registration of the user had been performed, and to insert into the warn information the information that a re-registration is required in case the user had a valid registration before and a de-registration of the user had been performed. 
     
     
         20 . The device according to  claim 1  or  18 , wherein the network is a third generation network, and wherein the network control device is a proxy call state control function (P-CSCF). 
     
     
         21 . The device according to  claim 1  or  19 , wherein the network is a third generation network, and wherein the inserting step is performed in a serving call state control function (S-CSCF). 
     
     
         22 . A network system, comprising a network control device according to any one of the  claims 12  to  21 , further comprising a network device (UE), wherein the network device is adapted to perform an automatic registration in reaction to the response message. 
     
     
         23 . A network device being connectable to a network, the network offering services to registered users, wherein the device is adapted to receive a message and to perform an automatic registration to the network in case the message contains a predetermined warn information. 
     
     
         24 . The network device according to  claim 23 , wherein the warn information contains a warn-code. 
     
     
         25 . The network device according to  claim 23 , wherein the warn information contains a warn-text.