Distributing a policy decision function in an IP multimedia subsystem
First Claim
1. An Internet Protocol (IP) Multimedia Subsystem (IMS) comprising:
- a logical Policy Decision Function (PDF) component comprising a plurality of physical PDF network elements; and
a front end node operable to determine which one of the plurality of physical PDF network elements is an intended recipient of a message by using identification information in an authorization token portion of the message.
1 Assignment
0 Petitions
Accused Products
Abstract
An Internet Protocol (IP) Multimedia Subsystem (IMS) is provided that includes a plurality of separate central processing units (CPUs). The IMS also includes a logical Policy Decision Function (PDF) component comprising a plurality of physical PDF network elements, each physical PDF network element execute on separate CPUs of the plurality of CPUs. A front end node is operable to determine which one of the plurality of physical PDF network elements is an intended recipient of a message by using identification information in an authorization token portion of the message. A distribution component is operable to select one of the plurality of physical PDF network elements according to a load sharing policy.
65 Citations
20 Claims
-
1. An Internet Protocol (IP) Multimedia Subsystem (IMS) comprising:
-
a logical Policy Decision Function (PDF) component comprising a plurality of physical PDF network elements; and
a front end node operable to determine which one of the plurality of physical PDF network elements is an intended recipient of a message by using identification information in an authorization token portion of the message. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
-
-
12. A method for distributing Policy Decision Function (PDF) in an Internet Protocol (IP) Multimedia Subsystem (IMS), the method comprising:
-
providing a plurality of physical PDF network elements that comprise a logical PDF, each of the plurality of physical PDF network elements executing on a separate central processing unit (CPU);
receiving a message intended for one of the plurality of physical PDF network elements;
determining from an identifier in the message which of the plurality of physical PDF network elements the message is intended for; and
delivering the message to the intended one of the plurality of physical PDF network elements. - View Dependent Claims (13, 14, 15, 16, 17, 18)
-
-
19. An Internet Protocol (IP) Multimedia Subsystem (IMS) comprising:
-
a plurality of separate central processing units (CPUs);
a logical Policy Decision Function (PDF) component comprising a plurality of physical PDF network elements, each physical PDF network element executing on separate CPUs of the plurality of CPUs;
a front end node operable to determine which one of the plurality of physical PDF network elements is an intended recipient of a message by using identification information in an authorization token portion of the message; and
a distribution component operable to select one of the plurality of physical PDF network elements according to a load sharing policy.
-
-
20. The IMS of claim 20, further comprising the message having a session identifier operable for use by the intended one of the plurality of physical PDF network elements to identify a session associated with the message.
Specification