A fair guaranteed down-link sharing scheme for cellular packet switched networks

In this paper, we study a fair down-link sharing scheme to control wireless link congestion in cellular packet switched networks. We analyse the unbounded fairness problems and disordered packet delivery induced by a handover in which we apply the weighted fair queueing (WFQ) discipline in a base station (BS). Based on the analysis, we propose a bounded fair scheduling discipline for BSs to distribute guaranteed bandwidth fairly to a mobile host (MH) regardless of congestion and handovers. We also propose a new handover protocol associated with the proposed scheduling discipline to remedy the disordered packet delivery phenomenon. The simulation results show that an increase in unfairness from a handover is cumulative and disordered packet delivery may occur during a handover. Finally, the simulation results also show that our proposed scheme can solve these observed problems