technology. Blockchain is also used for payment verification processes in the e-healthcare system [12, 13]. A blockchain based 5G architecture is proposed in [14]. Several researchers have proposed blockchain, cloud computing, and software defined network (SDN) usage in the healthcare sector for secure, low latency, low cost, and reliable communication systems [15-19]. HEALTHCARE-INTERNET OF THINGS (H-IOT) The H-IoT term is coined for medical science applications. In the H-IoT system, the various health resources are connected over the internet for exchange of data. In the healthcare sector, a huge amount of data is accumulated from the various sensors. Machine learning approaches can be used with these data sets for intelligent deci- sion making by doctors in hospitals. The layered architecture of H-IoT is given in Table 2.1. The H-IoT layers are implemented using technologies as shown in Figure 2.2. Every node is associated with sensor module for data collection. The various nodes in the network can be identified with a unique ID (UID). So, identification of the node is feasible with RFID technology. The IoT nodes communicate with each other using various communication technologies such as Bluetooth, Zigbee, Wi-Fi, 4G/5G, and the like. The communication technology depends on various parameters such as data rate, distance between nodes, communication system budget, power usage, and SO forth. For locating the nodes in the network, a global positioning system (GPS) can be used which detects the sensor node location. The collected data is uploaded on the cloud server. The analytical results from the cloud server can be evaluated by the doctor using a smartphone app or web browser. M. Haghi et al. proposed a healthcare-based platform for monitoring physiological and environment parameters [20]. Further, a wearable sensor patch which consumes less power and light in weight is developed in [21] for the measurement of ECG, photoplethysmography (PPG), and body temperature. An efficient transceiver is demonstrated [22] u