Method, system, and network element for service processing after data of network element is invalid or network element fails

Abstract

A method, a system, and a network element for service processing after data of a network element is invalid or a network element fails is provided. When the service network element receives the service request message from the network and is initiated to a called end and the user data is invalid, the service network element returns a data invalid message of the called end to the network. When a network element containing registration data of a user is abnormal and the registration data of the user is invalid, by using the present invention, the service unavailable time is shortened, and user services can be recovered rapidly.

1 - 7 . (canceled) 
   
   
       8 . A method for returning user data, comprising:
 receiving, by a home subscriber server (HSS), a user data request message containing a user identity from a serving call session control function (S-CSCF);   querying, by the HSS, an S-CSCF assigned to the user according to the user identity; and   returning, by the HSS, the user data according to the request message when the assigned S—CSCF is the requesting S-CSCF.   
   
   
       9 . The method according to  claim 8 , further comprising:
 querying, by the HSS, a stored registration state of the user according to the user identity; and   returning, by the HSS, the user data according to the request message when the stored registration state of the user is registered and the assigned S-CSCF is the requesting S-CSCF.   
   
   
       10 . The method according to  claim 8 , further comprising:
 receiving, by the S-CSCF, a call request message containing the user identity; and   adding, by the S-CSCF, the user identity to the user data request message, and sending the user data request message to the HSS.   
   
   
       11 . The method according to  claim 10 , wherein the call request message is an unregistered terminating call request INVITE message sent by an inquiry call session control function ( 1 -CSCF) or an originating call request INVITE message initiated by an application server (AS); or an originating call request INVITE message sent by a proxy call session control function (P-CSCF) and initiated by a user equipment (UE). 
   
   
       12 . The method according to  claim 11 , further comprising: sending, by the S-CSCF, the user data request message to the HSS after adding the user identity to the user data request message when the S-CSCF cannot find the user data according to the user identity. 
   
   
       13 . The method according to  claim 8 , further comprising:
 performing, by the S-CSCF, service control according to the returned user data.   
   
   
       14 . The method according to  claim 9 , further comprising:
 performing, by the S-CSCF, service control according to the returned user data.   
   
   
       15 . The method according to  claim 10 , further comprising:
 performing, by the S-CSCF, service control according to the returned user data.   
   
   
       16 . The method according to  claim 11 , further comprising:
 performing, by the S-CSCF, service control according to the returned user data.   
   
   
       17 . The method according to  claim 12 , further comprising:
 performing, by the S-CSCF, service control according to the returned user data.   
   
   
       18 . A system for returning user data, comprising a serving call session control function (S-CSCF) and a home subscriber server (HSS), and further comprising:
 a first receiving module, configured to receive a user data request message sent by the S—CSCF to the HSS, wherein the request message contains a user identity;   a query module, configured to query an S-CSCF assigned to the user according to the user identity;   a first determining module, configured to determine whether the S-CSCF assigned to the user and obtained by the query module is the requesting S-CSCF, and trigger a feedback module when the assigned S-CSCF is the requesting S-CSCF; and   the feedback module, configured to return the user data according to the request message.   
   
   
       19 . The system according to  claim 18 , wherein
 the query module is further configured to query a registration state of the user according to the user identity; and   the first determining module is further configured to trigger the feedback module to return the user data according to the request message when the stored registration state of the user is registered and the assigned S-CSCF is the requesting S-CSCF.   
   
   
       20 . The system according to  claim 19 , further comprising a first adding module configured to add the user identity to the user data request message after the S-CSCF receives a call request message containing the user identity, wherein 
     the S-CSCF sends the user data request message to the HSS. 
   
   
       21 . The system according to  claim 20 , further comprising a second determining module configured to determine whether the S-CSCF can find the user data according to the user identity, and send the user data request message to the HSS when the user data cannot be found according to the user identity after triggering the first adding module to add the user identity to the user data request message. 
   
   
       22 . A home subscriber server (HSS), comprising:
 a first receiving module, configured to receive a user data request message sent by a serving call session control function (S-CSCF), wherein the request message contains a user identity;   a query module, configured to query an S-CSCF assigned to the user according to the user identity;   a first determining module, configured to determine whether the S-CSCF assigned to the user and obtained by the query module is the requesting S-CSCF, and trigger a feedback module when the assigned S-CSCF is the requesting S-CSCF; and   the feedback module, configured to return the user data according to the request message.   
   
   
       23 . A serving call session control function (S-CSCF), comprising:
 a first adding module, configured to add a user identity to a user data request message after receiving a call request message containing the user identity, wherein a home subscriber server (HSS) queries the S-CSCF assigned to the user according the user identity through the request message, determines whether the S-CSCF assigned to the user is a requesting S-CSCF, and returns user data according to the request message when the assigned S-CSCF is the requesting S-CSCF.   
   
   
       24 . The S-CSCF according to  claim 23 , further comprising:
 a second determining module, configured to determine whether the S-CSCF can find the user data according to the user identity, and trigger the first adding module to add the user identity to the user data request message and send the user data request message to the HSS when the user data cannot be found according to the user identity.