Light fidelity (LiFi) would be a potential optical wireless communications technology for future mixed-spectrum 5G/6G indoor attocell network, which uses light-emitting diodes based as an optical antenna and offers Gbits capacity. For this scenario, a dynamic handover scheme based on bidirectional visible light communications (VLC) channel is proposed, which uses the uplink light sources to characterize terminal’s movement status for the mobility and make the handover decision in contrast to the unidirectional links. The uplink reference signal received power and the movement state are examined, and the created algorithm is executed in the bidirectional VLC test bed. The experimental results show that the proposed method will reduce the terminal’s handover rate by up to 45% and increase the optical network throughput by up to 26% at the experimental data rate compared with the skipping handover scheme for indoor LiFi network.

光保真 (LiFi) 将成为未来混合频谱 5G/6G 室内原子蜂窝网络的潜在光无线通信技术，该网络使用基于发光二极管作为光学天线并提供 Gbits 容量。针对该场景，提出了一种基于双向可见光通信（VLC）信道的动态切换方案，该方案利用上行光源表征终端移动状态的移动性，并与单向链路对比做出切换决策。检查上行参考信号接收功率和运动状态，并在双向 VLC 测试台上执行创建的算法。