# Technologies Trend towards 5G Network for Smart Health-Care Using IoT: A Review
## 1 Introduction  
Smart health-care enables advanced diagnostic instruments to provide advanced treatment for the patients and smart health-care devices to enhance the quality of health-care by providing vital signs in real-time. The aim of smart health-care is to facilitate the patients through the delivery of information regarding medical issues and their solutions. Smart health-care enables patients to take appropriate measures in case of critical circumstances [1]. It enables remote check-up service that results in reducing the treatment expenditures and supports health care providers in broadening their services beyond geographical limits. With the expansion of smart cities, a robust smart health-care system is required to guarantee health services to the users. Apart from well-being, one of the significant contributions isreducing health expenditure by timely diagnostics. For instance, Smart health-care with the Internet of Things (IoT) market estimated to be worth 158.1 billion dollars in 2022 [2]. IoT is going to revolutionize health-care and bring down the cost of medical devices. 5G networks are going to play a major role in order to enable widespread adoption of IoT [3]. In 5G networks, smart health-care is one of the most important applications [4]. Figure 1 shows the general architecture of the 5G-based smart health-care network and its main entities. In smart-health care, IoT can improve several applications, including asset management in hospitals, behavioural change monitoring, remote monitoring, treatment compliance monitoring, assisted living, smarter medication, and telemedicine [5]. These applications will play an important role in the near future medical business. By 2020, IoT in health care will lead the market to approximately 117 billion US dollars [6]. Many applications for the integration of mobile communication, e-health, and/or web services are proposed. In [7], a portable health application that inspects pressure sore by electronically recording data of health is suggested. In [8], a smart health application for assessment and diet inspection is intended. In [9], the author presents a novel strategy for mobile health applications. In [10], wearable solutions with mobility support are proposed for the living environment. In [11], an IoT application that is based on the mobile gateway is introduced for intelligent assistance in the mobile health environment. In [12], IoT is considered to be an essential factor for medical use in  
Figure 1: A general architecture of smart health-care network based on 5G. e-health platform. In [13], wearable devices are proposed for inspection of health-care in a wireless network consisting of sensors. In 5G network communication, smart antennas play an important role [14; 15]. Smart Antennas utilize many key innovations to improve 5G coverage and capacity [16; 17]. One of the such innovation is beamforming (i.e., vertical and horizontal), in which RF energy is focused in a contract beam to precisely where it is required instead of radiating the same energy in a wide area [18; 19]. Beamforming is particularly valuable for 5 GNR as the higher frequency mmWave RF is subject to fading over authentication loss and distance caused by objects hitting (e.g., vehicles, buildings, etc.) [20; 21]. A more coordinated beam of RF energy helps to guarantee a more prominent probability of ideal transmission capacity and signal quality [22; 23]. However, it is imperative to note that line of locate is still an issue, as beamforming points of interest are reduced with attenuation [24; 25]. In 5G networks, machine-to-machine (M2M) communication and IoT are expected to be the main pillars of smart health-care [26]. There are two main challenges that the suggested techniques will face. First is a massive number of terminals that have caused ultra-densified networks (e.g., \(10^{6}\) connection per km\({}^{2}\) approximately. Solutions to address the ultra-densification and scalability problem are needed for IoT and M2M applications.