Long-term Proportional Fairness over Multiple Cells

In current cellular networks, Proportional Fair Scheduling (PFS) is performed separately at each base station. Such single-cell scheduling is not aware of the data rate that mobile users received in previously traversed cells. We will show that, by lacking this information, Single-cell PFS fails to provide Proportional Fairness (PF) for a complete network of mobile users. To overcome this limitation, we extend Single-cell PFS by the long-term average rate a mobile user received in previous cells. By being aware this scheduling history, our Multi-cell PFS strategy achieves substantially higher fairness and throughput over the complete network than the single-cell approach.