Introduction Next-generation wireless networks (including 5G networks) are expected to see the emergence of several new use cases and business models driven by the emerging needs of users and system operators. This will be enabled by the maturity of current technologies and emergence of new technologies. The variety of applications and the corresponding performance requirements in these scenarios will be vastly different. Several use case families such as broadband access everywhere (e.g., pervasive video), extreme real-time communications (e.g., tactile internet with sub-millisecond latency), ultra-reliable communications (e.g., e-health services), massive internet of things