Patent ID: 11805154

Abstract:
Embodiments of a method performed by an Interconnect Border Control Function (IBCF) in an Internet Protocol (IP) Multimedia Subsystem (IMS) network and corresponding embodiments of an IBCF are disclosed. In some embodiments, the method performed by the IBCF comprises receiving, from an IMS node in a virtual IMS network domain of a virtual IMS network operator, a Session Initiation Protocol (SIP) message that serves as a request for a leased IMS service. The SIP message comprises information that identifies the leased IMS service, information that identifies an IMS network slice, information that identifies the virtual IMS network operator, information that identifies one or more sub-services requested for the leased IMS service, and/or information that identifies an IMS network slice instance. The method further comprises making a decision as to whether to accept or reject the request based on the information comprised in the SIP message.