# A Review on LiFi Network Research: Open Issues, Applications and Future Directions
## 4 Applications of the LiFi Network  
This section discusses a detailed overview of LiFi applications in various areas from the articles included in this review. The discussions are categorized based on their mass usage in stipulated areas.  
\begin{table}
\begin{tabular}{l c c} \hline \hline
**Main Contribution** & **Ref.** & **Source** \\ \hline Recent research on LiFi was summarized. The comparison between LiFi and Wi-Fi was introduced. The weaknesses, strengths, and application of LiFi in a different environment were addressed. & [5] & IEEE \\ \hline This work focused on developing LiFi technology. LiFi applications, advantages, limitations, and comparison between LiFi and Wi-Fi were discussed. & [7] & IEEE \\ \hline Issues regarding existing LiFi systems and monitoring applications were discussed. Moreover, different applications were introduced for various places, such as rooms, homes, or supermarkets. & [142] & IEEE \\ \hline LiFi with a 5G system was addressed. The benefits of the network layers of the latest technology, which also features LiFi, business, and industry, such as industry 4.0 and myths regarding LiFi, were addressed. & [14] & SD \\ \hline The hybridization of LiFi and Wi-Fi Li+ WiFi was discussed. Correlations, when Li + WiFi come together, were highlighted. Upcoming researchers were given directions to link these & [143] & IEEE \\ \hline State-of-the-art was investigated, and effective physical layer modulation schemes were explored in the context of indoor positioning. The main modulation techniques for LiFi were investigated. & [144] & WoS \\ \hline An overview of OWC technology, such as VLC, LiFi, Optical camera communication OCC, free-space visual communication, and light detection and ranging, was provided. The primary goal of this study is to highlight the differences among wireless optical technologies. & [21] & IEEE \\ \hline The authors reviewed state-of-the-art LiFi technology and discussed the system throughput and the user’s QoS in heterogeneous networks. & [22] & WoS \\ \hline The necessary foundations of LiFi were discussed, and the possibilities of incorporating LiFi in a communication system were investigated by defining the architecture. Moreover, they discussed transmitter-to-receiver data transmission. Furthermore, LiFi and other technologies, such as Bluetooth and WIFI, were compared. & [145] & SD \\ \hline This survey introduced a navigation system that supports blind people by sending audio feedback. In addition, future scope and many studies on the navigation system have been discussed. & [146] & IEEE \\ \hline This survey introduced LiFi communication techniques and numerous previous architectures to utilize VL. The main difficulties faced in achieving optimum VL contact, and the performance & [147] & IEEE \\ \hline This paper supported the need for a new spectrum of emerging and potential wireless networks. & \\ The authors introduced a taxonomy that defined the four significant developments in this field & [148] & IEEE \\ (e.g., VLC, OCC, Free-space optical communication FSO, and LiFi. & \\ \hline The improvement of LiFi compared with existing devices was explored. Moreover, & [149] & SD \\ \hline \hline \end{tabular}
\end{table}
Table 2: _Cont._