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US 12,587,575 B2Granted
IMS recovery
AssigneeT-Mobile USA, Inc.
InventorsShujaur Mufti, Saqib Badar, Khurram Ahmad Mirza
Life of this patent
Estimating the term…
Abstract
Improved systems and method are described for addressing issues when an S-CSCF goes appears non-responsive or an application server appears non responsive. Profile recovery is executed through application servers which may allow additional options in efficiencies in maintain applications while recovering from the non-responsive devices.
Claims16
A method comprising:
- communicating an INVITE to a first telephony application server (TAS);
- determining that the first TAS is non-responsive;
- communicating the INVITE to a second TAS;
- beginning a profile recovery by the second TAS, the profile recovery comprising:
- communicating a user discover request (UDR) message to a home subscriber server (HSS), and
- receiving profile data from the HSS, wherein the profile data comprises an active TAS address, an active S-CSCF address, and user registration data;
- if the active S-CSCF address matches with an active address, then the second TAS:
- downloads the profile data;
- applies mobile terminating (MT) services;
- and
- communicating profile data to a serving call session control function (S-CSCF) in an MT INVITE message.
8 more elements
A method comprising:
- communicating a first INVITE to a first serving call session control function (S-CSCF);
- determining that the first S-CSCF is non-responsive;
- communicating from an interrogating call session control function (I-CSCF) a second INVITE request to a second S-CSCF;
- communicating an unregistered third INVITE to a telephony application server (TAS) from the second S-CSCF;
- communicating a user discovery request (UDR) from TAS to a home subscriber server (HSS);
- receiving a user discovery acknowledgment (UDA) from the HSS at the TAS;
- communicating an INVITE response from the TAS to the second S-CSCF, the INVITE response comprising profile data from the HSS;
- communicating from the second S-CSCF to a proxy call session control function (P-CSCF) a fourth INVITE message with a route advanced feature tag;
- and
- processing the fourth INVITE message.
7 more elements
A system comprising:
- one or more processors;
- and
- a plurality of programming instructions that, when executed by the one or more processors, cause the system to perform operations including:
- communicating an INVITE to a first telephony application server (TAS);
- determining that the first TAS is non-responsive;
- communicating the INVITE to a second TAS;
- beginning a profile recovery by the second TAS, the profile recovery comprising:
- communicating a user discover request (UDR) message to a home subscriber server (HSS), and
- receiving profile data from the HSS, wherein the profile data comprises an active TAS address, an active S-CSCF address, and user registration data;
- if the active S-CSCF address matches with an active address, then the second TAS:
- downloads the profile data;
- applies mobile terminating (MT) services;
- and
- communicating profile data to a serving call session control function (S-CSCF) in an MT INVITE message.
11 more elements
Dependencies are inferred from the claim text.