Simultaneous Water-Filling Allocation Plus Fractional Frequency Reuse for 19-Cell Network

Abstract:
In recent years, 5G, the fifth-generation mobile communication system, has become a hot topic in communication industry and academia. With the explosive growth of mobile data demand, the existing mobile communication system is unable to meet the future demand, and a new generation of 5G system is urgently needed. In this paper, based on the original cellular network frequency deployment technology and the user's usage in cellular network coverage, it analyses the progress of the improvement of the integer frequency reuse 3(IFR 3), synchronous water filling (SWF), fractional frequency reuse (FFR), SWF+FFR, IFR+FFR and makes comparison and discussion. By comparing five methods and formulas, the role of FFR in network construction is demonstrated, and the performance of different algorithms is analysed and evaluated based on the average channel capacity. In addition, FFR+SWF is selected by comparison, which can improve the channel capacity and effectively reduce the same frequency interference. The shortcomings of IFR improved by FFR are also used to ensure the number of channels. With the 5G and 6G development, this technology, FFR+SWF will be widely used and play an irreplaceable role in the future.