SUMMARY
In this study the evaluation performance of (Optical light– radio Frequency) hybrid network system. We determine first the coverage area of optical system Li-Fi (light-fidelity) and radio frequency system (Wi-Fi) as well as the data rate downloading file size of them for single mobile user case. Secondly, we study the hybrid network system Li-Fi/Wi-Fi in an indoor for single mobile user case and the user mobility at the region of the coverage area. Throughput versus distance relationships has studied also for Li-Fi and Wi-Fi system in order to assess the performance of these system. The effect of the numbers of LED light sources Li-Fi hotspotsand the velocity of user are introduced in the take in account coverage regionareconsidered on the assessperformance of the hybrid networks systems Li-Fi/Wi-Fi. The evaluate performance of the hybrid network system hotspots Li-Fi/Wi-Fi for the information rate downloading size on the mobility have been conducted. The results show that the performance of hybrid network system hotspots Li-Fi/Wi-Fi have a significant effect because of the velocity of user. As well as, the results show that the performance of the hybrid network system hotspots Li-Fi/Wi-Fi increased when the number of light sources spotlights in the room are increases.