## 4 Internet of Things and Health Care  
IoT is still a somewhat new area of research and its utilization in health care remains a nascent field. Various developments have been in the use of IoT systems for health care. A standardized and common model for the upcoming head-to-foot IoT healthcare structure is suggested to guide the evolution of such a system. Various explanations of IoT exist; at the most basic level, it can be described as a network of individual devices inter-related via machine-to-machine transmission, allowing for the collection and interchanging of information [66; 67; 68]. Such mechanics can be applied in a wide range of industries, enabling the collection of large amounts of data. As a pilot technology of the Fourth Industrial Revolution [69] IoT mechanics have already been fruitful in many areas, such as smart stationing [70], agricultural fidelity [71] and management of water usage [72]. Remote health monitoring can be implemented for patients at home instead of in a hospital, minimizing pressure on hospital assets such as beds and doctors. Such an application could be beneficial for patients in rural areas, improving access to health care, as for the elderly living independently.  
IoT technology can also improve access to healthcare resources by reducing pressure on systems and providing better facilities and constant monitoring. Remote health monitoring is subject to some limitations, the most important of which are related to security due to the massive quantity of sensitive data recorded in individual databases on a regular basis. Therefore, sensors must be recalibrated regularly to ensure that they are functioning correctly and to minimize service disruptions in the event that a patient is found to be outside of the coverage area of a base station or his/her battery is drained. Fortunately, such issues can easily solved, and steps can be taken to minimize such disadvantages. Remote health monitoring systems based on IoT are expected to become viable for healthcare settings in the near future. Many researchers have recognized the strengths of IoT as a suitable solution for remote health monitoring systems.  
Many healthcare systems based on IoT are designed for a specific task, including diabetes supervision, rehabilitation, supportive surrounding living for the elderly, etc. Such systems have been structured for various applications and are strongly associated with enabling technologies. Several researchers are interested in the topic of rehabilitation and physical injury. For example, IoT technology can be used to develop a rehabilitation structure for individuals associated with their symptoms based on correlations with symptoms, disorders and therapies in a database.  
Such a system requires the manual support of the doctor, who inputs symptoms and implements the suggested treatment in 90% of cases. If the doctor is completely satisfied with the system's performance, no changes are required in the suggested plan of treatment [66]. The proposed model for a healthcare system using IoT is shown in Figure 3 and can be considered as a future system to guide decision making, serving as a strong foundation for various cases.  
Various scheduling mechanisms have also been analyzed in recent years, showing that the scheduling mechanism performs well compared to the first-arrived and lower jump approaches in term of packet loss. Figure 4 shows previous attempts at scheduling mechanisms, with efficient performance of that priority-based approach. Therefore, it is very necessary to analyze the packet status, which is discussed in the Results section.