sential capabilities for providing this level of flexibility include network slicing, network capability exposure, scalability, and diverse mobility. The requirements for other network operations are meant to address the necessary control and user-plane resource allocation and utilization efficiencies, as well as network configurations that optimize service delivery by minimizing routing between end users and application servers. Unlike previous generations of wireless systems, the main objective of 5G has been to develop a unified system that can be exclusively configured and optimized for different use cases. Increasing user expectations and diversified and challenging service requirements necessitate a coherent approach to technology development and deployment. In the previous generations of wireless technology, functionality was primarily provided by network equip- ment, and devices were primarily used to access network services. However, in the case of 5G, it is recognized that the boundary between functionality provided by the network and VR is the term used to describe a three-dimensional, computer-generated environment which can be explored and interacted with by a person. That person becomes part of this virtual world or is immersed within this environment and whilst there, is able to manipulate objects or perform a series of actions. AR is the integra- tion of digital information with the user's environment in real time. Unlike virtual reality, which creates a totally artificial environment, augmented reality uses the existing environment and overlays new information on top of it. Ixvi Introduction and Background functionality provided by the device is subtle. Virtualization of network functions, the role of applications, and the ubiquitous availability of increasingly sophisticated smart devices will only accelerate this trend. Nonetheless, there are some cases where the desired function- ality is expected to be exclusively provided in the network [45]. The eMBB use cases require a number of new KPIs r