Partitioned IP multimedia subsystem call session control function
First Claim
1. A network system of a network service provider for providing IP Multimedia Subsystem (IMS) service to users within a leasing entity, the leasing entity providing a media application to the users, the network system comprising:
- a plurality of network elements connected to form a core domain operated by the network service provider;
a master IMS instance configured within the core domain and including a core call session control function (CSCF) with a master CSCF address;
a partitioned IMS instance configured as a virtual core within the core domain and including
1) a partitioned CSCF with a partitioned CSCF address accessible by the users from outside the core domain and
2) a leasing-entity home subscriber server (HSS) storing user profiles identifying an application server providing the media application, wherein the leasing-entity HSS is accessed to obtain a corresponding user profile when a user of the leasing entity accesses the partitioned IMS using the partitioned CSCF address; and
an IMS service control interface between the master IMS instance, the partitioned IMS instance, and the application server so that the partitioned CSCF has access to the core CSCF via the master CSCF address for establishing transfer of media according to the media application as defined in the user profile.
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Accused Products
Abstract
A network system provides IP Multimedia Subsystem (IMS) service from a network service provider to a customer. A plurality of network elements are connected to form a core domain of the network service provider. A master IMS instance is configured within the core domain and includes a core call session control function (CSCF) and a core home subscriber server (HSS). A partitioned IMS instance is configured as a virtual core within the core domain and includes a partitioned CSCF and a customer HSS accessible by a user of the customer from outside the core domain. A virtual IMS service control interface is coupled between the master IMS instance and the partitioned IMS instance so that the partitioned CSCF has access to the core CSCF for transfer of media.
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Citations
12 Claims
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1. A network system of a network service provider for providing IP Multimedia Subsystem (IMS) service to users within a leasing entity, the leasing entity providing a media application to the users, the network system comprising:
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a plurality of network elements connected to form a core domain operated by the network service provider; a master IMS instance configured within the core domain and including a core call session control function (CSCF) with a master CSCF address; a partitioned IMS instance configured as a virtual core within the core domain and including
1) a partitioned CSCF with a partitioned CSCF address accessible by the users from outside the core domain and
2) a leasing-entity home subscriber server (HSS) storing user profiles identifying an application server providing the media application, wherein the leasing-entity HSS is accessed to obtain a corresponding user profile when a user of the leasing entity accesses the partitioned IMS using the partitioned CSCF address; andan IMS service control interface between the master IMS instance, the partitioned IMS instance, and the application server so that the partitioned CSCF has access to the core CSCF via the master CSCF address for establishing transfer of media according to the media application as defined in the user profile. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of providing IP Multimedia Subsystem (IMS) service from within a core domain operated by a network service provider to users of a leasing entity, comprising the steps of:
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configuring an instance of a master IMS within the core domain including a core call session control function (CSCF) with a master CSCF address; configuring a partitioned IMS instance as a virtual core within the core domain and including
1) a partitioned CSCF with a partitioned CSCF address accessible by the users from outside the core domain and
2) a leasing-entity home subscriber server (HSS) storing user profiles identifying an application server providing a media application of the leasing entity;directing a service request for the media application addressed to the partitioned CSCF address and received by the core domain to the partitioned IMS; the partitioned IMS determining proper handling of the request by accessing a user profile of the user; the partitioned IMS forwarding the service request to the master IMS via the master CSCF address; and the master IMS controlling a call session between the user and the media application. - View Dependent Claims (11, 12)
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Specification