of services from different sectors that could be offered by network slicing. 7.2.1 NETWORK SLICING The concept of network slicing has been introduced in 5G networks to support the different quality of service (QoS) requirements for each service type. Network sli- cing creates several logical networks, each designed to meet a specific requirement. Each slice of the network consists of virtual network functions and resources over the existing telecommunications infrastructure. Figure 7.1 demonstrates the concept of 5G network slicing. The main issue with slicing is what should define a group of services to be in one slice. One approach is to have three slices that correspond to the service categories in 5G, an eMBB slice, an mMTC slice, and a URLLC slice. The problem with this technique is that some applications have specifications that cannot be fulfilled by one of the three slices alone. For example, remote surgery needs a highly reliable and low latency connection to reflect the controls done by the surgeon on the robotic arms. Simultaneously, the surgeon needs a high-quality 3D view of what happens at the 5G Wireless Communication System in Healthcare Informatics URLLC slice slice slice Physical FIGURE 7.1 Network slicing in 5G. remote site, which requires high data rates. One solution to this problem is expanding the slices to include a slice specifically for remote surgery. This approach of horizon- tally expanding slices according to need of the cases is not efficient. The maximum number of slices possible is 256, which could not fit all special use cases from all industries. A better approach is to slice according to latency, reliability, connection density, mobility, and security requirements. In this case, all applications requiring low latency, high reliability, low mobility, high security, and a low connection density demand will use the same slice. In case healthcare applications require any extra pro- cessing, the slice differentiator (SD) field specified in the 3GPP Release 15 specifica- tion [8] cou