mmunication service, in vertical appli- cations in accordance to IEC 61907, 19 whereas reliability is related to the availability of the communication network (see Fig. 14). As depicted in Fig. 14, reliability covers the communication-related aspects between two nodes which are often the end nodes, while communication service availability addresses the communication-related aspects between two communication service inter- faces. In other words, the gap between the two concepts is the communication interface. This might seem to be a small difference, but this difference can lead to conditions where reliability and communication service availability have different values. Priority, QoS, and Policy Control: The 5G networks are expected to support a wide range of commercial services and regional/national regulatory services with appropriate access prioritization. Some of these services share common QoS characteristics such as latency and packet loss rate but may have different priority requirements. For example, UAV control and air traffic control may have stringent latency and reliability require- ments but not necessarily the same priority requirements. In another example voice- based services for multimedia priority service (MPS)²0 and emergency services share Survival time is the time that an application consuming a communication service may continue without an anticipated message. IEC 61907 2009 provides guidance on dependability engineering of communication networks. It establishes a generic framework for network dependability performance, provides a process for network dependability implementation, and presents criteria and methodology for network technology designs, performance evalua- tion, security consideration, and quality of service measurement to achieve network dependability perfor- mance objectives (see https://webstore.iec.ch/publication/). MPS, supported by 3GPP, is a set of services and features which create the ability to deliver calls or com- plete sessions of a high-priority nature from mobile-t