Abstract: A method, implemented by a wireless transmit/receive unit, WTRU, includes receiving, a first message including information indicating a control plane procedure. According to the control plane procedure, a second message including a publish request is transmitted to a network node. Responsive to the publish request, a third message including information indicating a packet path routing indication is received from the network node. A fourth message, including uplink data, according to the packet path routing indication is transmitted to a data network.

Abstract: Method, apparatus, and systems for transparent switching of service function identifiers in wireless communications are provided. In an example, a method for wireless communications comprises sending configuration information to one or more Service Function Endpoints (SFEs) using a programmable application programming interface (API), implementing the API as a programmable middleware, and registering each of the one or more SFEs with a respective identifier according to a service description at the programable middleware.