Capacity of Multi-layered Cellular Networks of Beyond 5G with Fractional Frequency Reuse

In this paper, we propose a clear definition of frequency reuse (FR), including the fractional frequency reuse (FFR), in Beyond the fifth telecommunication generation 5G (B5G) networks followed by the corresponding mathematical expression for future possible developments. With various cluster size, we also analyze the capacity of multi-layered cellular networks of B5G confirmed by a series of computer simulations. We perform capacity calculations of 10,000 iteration for users at random locations accessing the B5G base station at the center of cell. For the case of multi-layered cell, in each trial, users are located either at inner layer or outer layer, are accessing simultaneously the B5G base station. We found that capacity of cells with multi-layer strategy (with FFR), by theoretical analysis and computer simulations, is larger than that of the single layer cell (with traditional FR), which is indicating that FFR in general is better than traditional FR. These results are expected to contribute to the development and implementation of FFR in B5G networks