A Novel TCP-Oriented Multi-Layer Packet Scheduling Algorithm

In order to reduce the reception completion time of data units in the application layer, a novel TCP-oriented multi-layer packet scheduler (TCP-oriented MLPS) is proposed in this paper. The proposed scheduler firstly narrows down the number of candidate users of the packet scheduler based on the congestion window in the TCP layer, and then allocates resources to the selected candidate users preferentially with the proportional fairness packet scheduler (PFPS) to achieve better fairness and capacity performances simultaneously. Simulations are conducted using periodic file transfer protocol (FTP) traffic models of 5 seconds with Long Term Evolution (LTE) air interface numerology. Simulation results show that the proposed TCP-oriented MLPS achieves up to 279.2% improvement of the number of data units in the application layer, which satisfies with the target reception completion time. Moreover, the simulation results also show that the degradations in the physical layer introduced by the proposed TCP-oriented MLPS in terms of the average cell throughput and 5% worst user throughput are very slight.