Patent ID: 11146595

Abstract:
A service-based architecture (SBA) IP Multimedia Network Subsystem (IMS) network exposes Network Functions (NFs) to nodes within a 5G core network (CN), nodes within the SBA IMS network, and/or nodes within another network. In contrast to the SBA IMS network, legacy IMS networks are non-SBA IMS stateful networks that may utilize the Session Initiation Protocol (SIP). Utilizing the SBA IMS network, a node in the 5G core network can communicate directly with any node in the SBA IMS network. The SBA IMS network is stateless and open as opposed to stateful and closed as in SIP based legacy IMS networks. In some configurations, the SBA IMS network utilizes a HyperText Transfer Protocol (HTTP). For instance, instead of using the application layer SIP protocol, techniques can include using HTTP. The SBA IMS may also connect to legacy SIP IMS networks.