SDN is based on the centralization of configuration and control, while ensuring a simple data plan  architecture. A network slice may support one or many services, and can be used to create a virtual operator network and may provide customized service characteristics. 0 Teleprotection in a smart grid network is the ability to react to rapid changes in the supply or usage of resources (such as electricity, water and gas) to avoid transient system failures that can damage equipment or cause customers the inconvenience of power outages. Network management in 5G systems requires additional work to include VNFs deployed in cloud data centers. The second category of application being addressed is that of cMTC, which is also called Critical IoT. The transport domain delivers connectivity between remote sites and equipment/devices. This will allow to optimize the access to applications in terms of capacity and latency, assuming service applications are distributed as well. Such behavior can be associated with security, data-flow isolation, quality of service, reliability, independent charging and so on. %PDF-1.7 %���� Several industry bodies have set the requirements in terms of what 5G actually is. The cloud will offer an increasing number of comprehensive platforms as a service (PaaS) to make it easy to develop new applications. The paper starts with a discussion about interworking between LTE and 5G … The factory automation use case requires cMTC services. SDN is about the separation of the network control traffic (control plane) and the user specific traffic (data plane). An additional objective of mMTC is to provide ubiquitous connectivity with relatively low software and hardware complexity and low-energy operation. For instance, when setting up a private network in the form of a network slice that can be an end-to-end virtually isolated part of the public network, the network exposes a set of capabilities in terms of bandwidth, latency, availability and so on. The transport networks are connected via backbone nodes that carry the information from the access nodes to the data centers where most of the data is stored and the network is managed. An unprecedented ability and willingness to share information is leading to a greater degree of collaboration between people and all kinds of different industries. In addition to providing bulk connectivity for the operator's mobile network fronthaul and backhaul, the transport domain may offer different types of customer facing connectivity services, such as a Layer 2 or Layer 3 VPN. The 5G system will fully support the concept of network programmability for all types of services. New applications are increasingly designed to be cloud native. Consequently, a high degree of automation and coordination within and cross network domains will be required. The performance objectives of cMTC will be applied to workflows such as the automation of energy distribution in a smart grid, in industrial process control and sensor networking where there are stringent requirements in terms of reliability and low latency at the application layer. The deployment architecture corresponding to these cases is shown in Figure 3, realized here by separate network slices supporting each service. The 5G system, which is shown in Figure 2, will be built on "flexible" radio access nodes, distributed and centralized data centers allowing for flexible allocation of workloads. ETSI 3GPP TS 23.501 version 15.5.0 Release 15 1 ETSI TS 123 501 V15.5.0 (2019-04) Reference RTS/TSGS-0223501vf50 Keywords 5G ETSI 650 Route des Lucioles F-06921 Sophia Antipolis Cedex - FRANCE Tel. In particular, there will be a need to: An example of the high-level architecture of the cMTC service is shown at the bottom of Figure 3, where the UP and CP have been placed on the BS site along with a "duplication" of some the core functions such the PCF and SDM. Providing both extreme high data-rate and low latency communications, extreme mobile broadband (eMBB) [3] also offers extreme coverage – well beyond that provided by 4G. With the dawn of the 5G era, new use cases for the technology are emerging as consumers and enterprises set to work on identifying processes and channels that will boost the efficiency of their lives and their business. Emergency communication needs a reliable network that can help with the search and rescue of humans, and the identification and rectification of catastrophic problems involving machinery – even if parts of a network have been damaged in a disaster. 5G Core (5GC) network architecture implementation doesn't exactly follow the network evolution upgrade path as previously followed by 2G, 3G and 4G networks and this is what makes 5G Architecture very different from its predecessors. The cloud allows infrastructure to scale in or out and automatically; in other words, when an application needs more resources, the cloud automatically spins up another instance of that application, and removes an instance when load decreases. The 5G Architecture Working Group as part of the 5GPPP Initiative is looking at capturing novel trends and key technological enablers for the realization of the 5G architecture. Examples of such coordination include: Network functions (as well as other types of applications) in 5G will increasingly be deployed as virtualized software instances running in data centers. Shopping malls can allow delivery of personalized shopping experiences. The 5G system will imply major changes in the implementation and deployment of networking infrastructure, based on software-defined networking (SDN) and network functions virtualization (NFV).