Optimization Of SH Traffic By A Cache-And-Try-First Mechanism
First Claim
1. A method of determining which Serving Call State Control Function (S-CSCF) to route a message to, the method comprising:
- receiving a request for a S-CSCF associated with a mobile unit;
determining if an S-CSCF is stored for the mobile unit;
determining whether a time associated within the S-CSCF is less than a predetermined threshold; and
reusing the stored S-CSCF for the mobile unit.
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Accused Products
Abstract
In accordance with an exemplary embodiment, whenever an AS queries an HSS for a user'"'"'s S-CSCF address, the AS stores the mobile user'"'"'s S-CSCF address along with a time stamp, preferably within a database at the AS. When the AS then receives a service request requiring the use of the end user'"'"'s S-CSCF address, the AS reuses the mobile user'"'"'s S-CSCF address cached at the AS local database. The AS can also determine whether to reuse the user'"'"'s cached S-CSCF address based on the policy of the service provider and the timestamp of the cached S-CSCF address. The AS can develop a time window for reusing the cached S-CSCF address based with policies.
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Citations
15 Claims
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1. A method of determining which Serving Call State Control Function (S-CSCF) to route a message to, the method comprising:
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receiving a request for a S-CSCF associated with a mobile unit; determining if an S-CSCF is stored for the mobile unit; determining whether a time associated within the S-CSCF is less than a predetermined threshold; and reusing the stored S-CSCF for the mobile unit. - View Dependent Claims (2, 3)
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4. A method for storing a Serving Call State Control Function (S-CSCF) associated with a mobile unit, the method comprising:
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receiving an associated S-CSCF, the associated C-CSCF being the S-CSCF that is supporting a mobile unit; and storing the associated S-CSCF. - View Dependent Claims (5, 6)
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7. A method for connecting to a mobile unit, the method comprising:
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determining a previously used network entity associated with a mobile unit; and utilizing the previously used network entity to connect with the mobile unit without querying an updated network entity associated with the mobile unit. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15)
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Specification