Section: 6.8 Dynamic policy control
Content: The 5G system shall support the creation and enforcement of prioritisation policy for users and traffic, during connection setup and when connected. NOTE: Prioritisation, pre-emption, and precedence of critical traffic associated with certain priority services (e.g. MPS and Emergency) are subject to regional/national regulatory and operator policies. The 5G system shall support optimised signalling for prioritised users and traffic where such signalling is prioritized over other signalling traffic. Based on operator policy, the 5G system shall allow flexible means for authorized entities to create and enforce priority among the different service flows. Based on operator policy, the 5G system shall support a real-time, dynamic, secure and efficient means for authorized entities (e.g. users, context aware network functionality) to modify the QoS and policy framework. Such modifications may have a variable duration. Based on operator policy, the 5G system shall maintain a session when prioritization of that session changes in real time, provided that the new priority is above the threshold for maintaining the session.