Mobility-Aware Load Balancing Scheme in Hybrid VLC-LTE Networks

摘要

Visible light communication (VLC) can offload the increasingly heavy traffic in LTE network, improving the spectral and energy efficiency without introducing additional interference. However, developing a scalable load balancing scheme with less handover overheads becomes an issue. In this letter, leveraging the location-sensitive feature of VLC channel, we propose a mobility-aware load balancing scheme to maximize the system utility. The load balance problem is solved by introducing college admission model in a matching theory. The preferences are the measures of system throughput, users’ trajectories, and the proposed load fairness index. A system-level simulation results demonstrate that the proposed scheme outperforms the considered benchmarks in terms of throughput, handover overheads, and network fairness significantly.