# Magic of 5G Technology and Optimization Methods Applied to Biomedical Devices: A Survey
## 3 Wearable Medical Devices  
Wearable medical devices are essential tools for monitoring human's vital signs leading to improved healthcare. Figure 3 presents the typical sensing equipment used in medical devices. These types of devices can be either directly touching the skin or positioned/located on the clothes of patients. What is popular as a fabrication process is printing technology such as that of the flexible plastic foils attached to the body [30]. Wearable health technology products can be employed to monitor tears, temperature, wound, breath, sweat, and blood pressure [31; 32; 33; 34; 35]. [PERSON] et al. presented the well-suited 5G wearable network able to provide low-latency data processing with appropriate resource utilization [36]. The presented network includes three parts as the 5G network, edge caching and computing, with network slicing (see Figure 4). Hereby, it supports the connection of a large amount of devices and utilizes the global cognitive engine for obtaining service-aware resource allocation. Figure 3: Various medical devices using sensors [29]. Another aspect of using medical devices is to provide the'self-management' of disease by using wireless local area networks (WLANs) and 5G wireless networks, for example, to control the long-term blood glucose by the patient to reduce diseases such as diabetes. In [37], an interactive telecare system (ITCS) is presented for diabetic sick people where IoT technology is employed for presenting the required action and alert service. The four important steps in relation to the proposed ITCS include: monitoring the patient; noting abnormal levels; notifying the caregiver and tracking the patient response; and finally noting any behavior changes are demonstrated in [37]. The Italian Ministry of Economic Development has developed a continuous home telemonitoring system that is appropriate for chronic patients and is presented in [38]. The system gathers the information and then the data are sent to the multi-edge computing server through 5G technology using environmental sensors. Figure 4: (**a**) The 5G ultra-dense cellular network in the wearable network macro-cell base station (MBS), small cell base station (SBS), device-to-device (D2D) (top); and (**b**) illustration of edge cloud and the data center (bottom) [36]. Reprinted/adapted with permission from Ref. [36]. Copyright 2022, IEEE. Typically, these kind of devices use Internet of Things (IoT) to connect various apparatuses together through the Internet which increases the flexibility and compatibility of the overall performance. This connection can be provided using the smart sensors through wireless networks or Bluetooth [9; 39]. The mm-wave range extends from 30 to 300 GHz; in some cases, the 20-30 GHz band is also considered where the WiGig protocol (IEEE 802.11 ad) is appropriate for the wearable devices, such as reality glasses with video streaming capabilities [40]. The wearable technology which enables the medical industry to incorporate the data shared/achieved from the patient is provided to the doctors who can thus improving their patient's lifestyle. Wearable medical devices have various benefits including personalization, fast diagnosis, optimum, early decisions by doctors, and cost-effective remedy. In [41], a near-field magnetic communication system was reviewed which presents well-suited cochlear commercialized implantable devices that can save the lives of deaf people. Figure 5 presents the cochlear implant schematic that can be used in the ears. In medical applications, what is so critical and important is gathering information from massive raw data. For this case, a new system structure is presented in [29] based on the emotion-aware healthcare which analyzes the relevance between emotion and sick people. Figure 6 presents the big data application in emotion-aware healthcare (BDEAH) where the 5G technology is employed into the structure and results in improved performance in whole system.