Enhanced filtering for an IP multimedia subsystem
First Claim
1. A method for providing a call/session control function in an Internet Protocol multimedia subsystem comprising:
- receiving a signaling message associated with a call or session involving a user element;
accessing filtering criteria to be applied for the signaling message, the filtering criteria comprising rules for invoking at least one multimedia service based on external information, which is not found within the signaling message, and wherein the filtering criteria is defined on a group basis and applied to all signaling messages for a defined group of user elements or users;
accessing the external information;
applying the filtering criteria for the signaling message in light of the external information to select a multimedia service to invoke; and
invoking the multimedia service.
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Accused Products
Abstract
The present invention provides a call/session control function in an Internet Protocol multimedia subsystem capable of providing enhanced filtering to select multimedia services to invoke upon processing a signaling message. In addition to analyzing internal information contained within the signaling message, external information can be used to identify multimedia services to invoke and when those multimedia services should be invoked. Upon receiving a signaling message, filtering criteria to apply for the signaling message is accessed. The filtering criteria define rules for invoking multimedia services. These rules will take into consideration external information, which is not found within the signaling message. The external information may relate to the date, time, presence information, location information, user information, group information, or network information. The external information may change dynamically, wherein different multimedia services may be invoked with the same signaling message if the external information changes.
38 Citations
22 Claims
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1. A method for providing a call/session control function in an Internet Protocol multimedia subsystem comprising:
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receiving a signaling message associated with a call or session involving a user element; accessing filtering criteria to be applied for the signaling message, the filtering criteria comprising rules for invoking at least one multimedia service based on external information, which is not found within the signaling message, and wherein the filtering criteria is defined on a group basis and applied to all signaling messages for a defined group of user elements or users; accessing the external information; applying the filtering criteria for the signaling message in light of the external information to select a multimedia service to invoke; and invoking the multimedia service. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A system for providing a call/session control function in an Internet Protocol multimedia subsystem comprising:
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a communication interface; and a control system associated with the communication interface and adapted to; receive a signaling message associated with a call or session involving a user element; access filtering criteria to be applied for the signaling message, the filtering criteria comprising rules for invoking at least one multimedia service based on external information, which is not found within the signaling message, and wherein the filtering criteria is defined on a group basis and applied to all signaling messages for a defined group of user elements or users; access the external information; apply the filtering criteria for the signaling message in light of the external information to select a multimedia service to invoke; and invoke the multimedia service. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification