Abstract
In this paper, the allocation of downlink channel resources in the indoor visible light multi cell network is studied. Based on the three color channels of RGB-LED, a conflict graph model is established, and a downlink channel allocation algorithm is proposed for visible light multi cell network. First, the global allocation of users access to the cell is given out. Then, considering the users business needs, a weighted conflict graph model is established, the channel allocation algorithm is proposed based on graph coloring and user traffic fairness. The simulation results show that, compared with the graph-based dynamic allocation algorithm, the proposed algorithm is to improve the downlink communication fairness of users, and the average throughput of the whole network is improved at the same time.
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