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2                                        ITU-T Focus Group IMT-2020 Deliverables


            –       Control Support

            The Resource Plane Control Support (RP-CS) interacts with 5G-CP via standard interface. It provides data
            model, or information model, of the 5G network resources, which are to be abstracted in the Control Plane.
            It may perform resource abstraction, instead of CP, in case when it is supported by the underlying resource
            technology.
            The  RP-CS  is  programmable.  It  enables  to  update  and/or  modify  the  Data  Transport  and/or  the  Data
            Processing capabilities supported by user plane deep programmability functionality. For example, a new
            protocol or a new set of interface specifications may be added for the purpose of enhancing functionalities
            of the Data Transport and/or the Data Processing functional components. For another example, software
            bugs may be fixed through the update.
            –       Resource Plane Functions

            The Resource Plane Functions provide data forwarding and data routing functionalities. The control of the
            data forwarding functionality is provided by 5G-CP. 5G-RP routing rules can be customized by the 5G-CP for
            SDN applications needs.  Data forwarding and data routing functionalities are extensible and programmable.
            Examples of functional extension include enhancing the existing data transport capabilities and incorporating
            new data transport capabilities. It also provides data processing functionalities to examine and manipulate
            data. They enable to alter format and/or payload of data packets/frames and to adjust sending of data
            packets/frames  as  specified  by  SDN  applications. Data  processing  functionalities  are  also  extensible  and
            programmable. Examples of functional extension include enhancing the existing data processing capabilities
            and incorporating new data processing capabilities, e.g., new transcoding algorithms.
            –       Management Support and Softwarization

            The Resource Plane Management Support and Softwarization (RP-MSS) provides resources description, i.e.
            vendor, software version, and their status (e.g., CPU load, used RAM memory or storage). It may include a
            management support functionality that performs some local management operations if delegated by 5G-MP.
            This functionality can be used to support technology dependent resource discovery, for programmable, local
            monitoring of the Resource Plane entity (in order to limit the amount of exchanged data or to focus on a
            specific issue) or to implement autonomic management behaviour. It provides capabilities of softwarization
            of physical resources into virtual resources. It also provides lifecycle management of all RP software-based
            resources with the support of 5G-MP.
            •       5G Management Plane

            The 5G Management Plane (5G-MP) provides functionalities for managing the functionalities of other planes,
            i.e., 5G-ASP, 5G-CP and 5G-RP. It interacts with these layers using standard interfaces. 5G-MP interoperates
            with 3rd party management systems, for example for billing, customer care, statistics collection or dynamic
            service provisioning, therefore a standard interface to the external operator management systems (e.g.,
            MANO, 3G/4G NMS/BSS, etc.) also exists. It is also responsible for the orchestration (if needed) of dynamically
            deployed  management  tasks  (services)  in  a  multi-plane  management  nature of  5G-MP  and  coordinated
            (orchestrated) reconfiguration of resources of the 5G-RP.

            5G-MP includes functionalities for supporting fault management, configuration management, accounting
            management, performance management and security management (FCAPS) as described in [ITU-T M.3400].
            Examples of such functionalities are equipment inventory, fault isolation, performance optimization, and
            initial configuration of 5G-RP, 5G-CP and 5G-ASP. It is also responsible for the lifecycle management of 5G
            software-based components of all 5G planes. By considering energy and environmental constraints, 5G-MP
            provides energy efficient operations of virtual and physical resources used for the implementation of all
            planes.  The  functionality  can  be  realized  by  energy-aware  algorithms  supported  by  resource  status
            monitoring and analytics.

            5G-MP functions include Resource Plane Management (RPM), Control Plane Management (CPM), Application
            and  Service  Plane  Management  (ASPM),  Multi-Plane  Management  Orchestration  (MPMO),  and  External
            Relationship Management (ERM).





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