# A Review on LiFi Network Research: Open Issues, Applications and Future Directions
## 3 Taxonomy
### Review and Survey Articles
\begin{table}
\begin{tabular}{p{113.8 pt} p{113.8 pt} p{113.8 pt}} \hline \hline
**Main Contribution** & **Ref.** & **Source** \\ \hline The applications of VLC, including LiFi, were analyzed. The disadvantages and advantages of the VLC method across LiFi, Wi-Fi, and Wi-Max wireless networking were contrasted. & [134] & IEEE \\ \hline Standardization groups that work in VLC technologies and state-of-the-art research on LiFi networks were discussed. & [10] & WoS \\ \hline The general functionality of WiFi and VLC or LiFi was described, and a functional structure for the coexistence of both technologies was illustrated. The ongoing research effort was addressed, and current and future research challenges were identified. & [135] & IEEE \\ \hline The authors highlighted the data transmitted by LEDs, previous studies and research technologies established, modulation methods, deployment, and challenges in LIFI applications. & [136] & IEEE \\ \hline The authors introduced a description of LiFi in terms of working principles and LiFi features, such as capacity efficiency, safety, security, applications, and advantages. & [20] & IEEE \\ \hline LiFi features, such as working principles, challenges, and applications, were presented to compare Wi-Fi technology. & [26] & IEEE \\ \hline The importance of LiFi in construction, bulb component functions, applications, and its disadvantages and advantages were highlighted. & [137] & IEEE \\ \hline LiFi technology was presented in terms of work principles. The efficiency, similarity, and information transmission of LiFi through LEDs were compared with those of WLAN. & [138] & IEEE \\ \hline The authors highlighted the VLC potentials, the current RF problems, and LiFi capabilities on improving indoor data transfer and connectivity. In addition, LiFi concepts, implementations, weaknesses, and difficulties were addressed. & [139] & IEEE \\ \hline This paper presented the LiFi technology development, including design, modulation, efficiency and challenges, difference LiFi and WiFi, LiFi topology finally, LiFi physical and MAC layer. & [140] & WoS \\ \hline The LiFi state-of-the-art development, strengths, and weaknesses were emphasized. Moreover, LiFi challenges that were faced in the implementation of communication techniques and the modulation used in LiFi were discussed. & [27] & IEEE \\ \hline Authors motivated the need to learn and understand new technologies (e.g., LiFi) and their advantages. Working smart meters were introduced, and communication information was recorded daily to the utility for monitoring and billing purposes. & [24] & IEEE \\ \hline The authors reviewed a dynamic LB technique for hybrid LiFi/RF networks, and three types of LB algorithms that were proposed in the literature were compared. Moreover, they discussed open challenges in this area of hybrid LiFi. & [141] & ACM \\ \hline Offers an extensive analysis of recent articles and advances in LiFi. LiFi-based IoT architecture was also introduced. & [6] & IEEE \\ \hline LiFi applications and experimental devices for LiFi communication, as well as the critical paths for the current innovation, were presented. & [3] & IEEE \\ \hline \hline \end{tabular}
\end{table} 
Table 2: Literature review of review and survey articles. Furthermore, many studies emphasized the advantages and disadvantages of LiFi and highlighted its applications. Our work found that no study focused on all these important points together in one article, and no study has discussed the classification of the simulation studies. Considering that no study mentioned the country of publication and the publication trend in this area, therefore in can be deduced that no study has reviewed all the surveys and articles in this area. Thus, our study aims to address this and introduce an overview of all the important aspects of this area in a consolidated form.