Service-based IP multimedia network subsystem (IMS) architecture

A computer-implemented method performed by one or more processors configured with specific instructions, the computer-implemented method comprising:

• receiving, at a first node within a service-based architecture (SBA) IP Multimedia Network Subsystem (IMS), a request for a service, wherein the SBA IMS includes the first node that is configured to communicate using a stateless protocol with a second node;
• identifying that the request is from the second node and that the request is in accordance with the stateless protocol;
• and
• providing the service from the first node directly to the second node,
• wherein the SBA IMS is coupled to a non-SBA IMS that utilizes a Session Initiation Protocol (SIP), wherein the SBA IMS is configured to communicate with the non-SBA IMS, and wherein the SBA IMS implements at least some services also implemented by the non-SBA IMS.

A non-transitory computer-readable medium storing instructions that, when executed, cause one or more processors to perform operations, comprising

• receiving, at a first node within a service-based architecture (SBA) IP Multimedia Network Subsystem (IMS), a request for a service, wherein the SBA IMS includes the first node that is configured to communicate using a stateless protocol with a second node;
• identifying that the request is from the second node and that the request is in accordance with the stateless protocol;
• and
• providing the service from the first node directly to the second node,
• wherein the SBA IMS is coupled to a non-SBA IMS that utilizes a Session Initiation Protocol (SIP), wherein the SBA IMS is configured to communicate with the non-SBA IMS, and wherein the SBA IMS implements at least some services also implemented by the non-SBA IMS.