Access Domain Selection In A Communications Network
First Claim
1. A method of managing access domain selection for a user device accessing an IP Multimedia Subsystem network, the method comprising:
- at a Call Session Control Function in the IP Multimedia Subsystem network, storing an access domain indicator associated with a user'"'"'s contact address, the access domain indicator being associated with the user'"'"'s contact address when the user registers with the IP Multimedia Subsystem network; and
sending the access domain indicator to an Access Domain Selection function in the IP Multimedia Subsystem network, the access domain indicator to be used by the Access Domain Selection function in selecting an access domain.
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Accused Products
Abstract
A method and apparatus for managing access domain selection for a user device accessing an IP Multimedia Subsystem (IMS) network. A Call Session Control Function (CSCF) in the IMS network stores an access domain indicator associated with a user s contact address. The access domain indicator is associated with the user s contact address when the user registers with the IMS network. The CSCF sends the access domain indicator to an Access Domain Selection (ADS) function in the IMS network, the access domain indicator to be used by the ADS function in selecting an access domain. This allows the ADS function to select the correct access domain to use when sending messages to the user device.
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Citations
15 Claims
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1. A method of managing access domain selection for a user device accessing an IP Multimedia Subsystem network, the method comprising:
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at a Call Session Control Function in the IP Multimedia Subsystem network, storing an access domain indicator associated with a user'"'"'s contact address, the access domain indicator being associated with the user'"'"'s contact address when the user registers with the IP Multimedia Subsystem network; and sending the access domain indicator to an Access Domain Selection function in the IP Multimedia Subsystem network, the access domain indicator to be used by the Access Domain Selection function in selecting an access domain. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A Call Session Control Function node for use in an IP Multimedia Subsystem network, the Call Session Control Function node comprising:
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a receiver for receiving an access domain indicator, the access domain indicator being associated with a user'"'"'s contact address; a memory for storing the access domain indicator; and a transmitter for sending the access domain indicator to an Access Domain Selection function. - View Dependent Claims (10, 11)
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12. An Access Domain Selection function node, comprising:
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a first receiver for receiving from a Call Session Control Function in an IP Multimedia Subsystem network an access domain indicator associated with a user'"'"'s contact address, the access domain indicator being associated with the user'"'"'s contact address when the user registers with the IP Multimedia Subsystem network; and a memory for storing the received access domain indicator; a second receiver for receiving an INVITE message addressed to the user; a processor for amending an address in the INVITE message to a target address on the basis of the stored access domain indicator, and a transmitter for sending the amended INVITE to the Call Session Control Function for forwarding to the amended address. - View Dependent Claims (13)
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14. An IP Multimedia Subsystem Centralized Services Application Server node comprising:
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a receiver for receiving a registration request from a User Equipment via a circuit switched access domain; a processor for associating a feature tag indicating that the access domain is a circuit switched access domain with a user address, and for including an address identifying an IP Multimedia Subsystem Centralized Services Application Server in the request; and a transmitter for sending the registration request to a Call Session Control Function.
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15. A user device for accessing an IP Multimedia Subsystem network, the user device comprising:
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a processor for determining an access domain via which the user device can connect to the IP Multimedia Subsystem network; and a transmitter for sending a message requesting registration with the IP Multimedia Subsystem network, the message including an access domain indicator associated with a user'"'"'s contact address.
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Specification