A low packet loss rate scheduling algorithm for real-time traffics in LTE system

Abstract:

In LTE system, in order to improve system Packet Loss Rate (PLR) performance of scheduling algorithm for real-time traffics and solve the problem that the performance of Delay Prioritized Scheduler (DPS) algorithm will degrade in terms of higher PLR and lower system throughput with the increase of user number, we propose a DPS based scheduling algorithm which considers packet delay and instantaneous downlink channel condition of each user. System throughput can be improved by the utilization of channel conditions for different users, and user fairness can be guaranteed due to the information of different user delay. Simulation results show that the proposed algorithm can be used to achieve the tradeoff between system throughput and user fairness, and reduce PLR significantly under the Quality of Service (QoS) constraints of real-time traffics.