Resource allocation for Real-Time services using Earliest Due Date mechanism in LTE networks

摘要

In this paper we introduce and asses the performance of a new scheduling algorithm based on Earliest Due Date (EDD) mechanism. Our proposed scheduling algorithm enhances the performance of Real-Time (RT) flows such as video and Voice Over Internet Protocol (VOIP) in Long Term Evolution (LTE) cellular networks especially in downlink. The proposed scheduling scheme provides the lowest Packet Loss Ratio (PLR) for RT multimedia services, this can be achieved by taking the expiration time of the head of line packets of users' queues into account. Also, the proposed scheduling algorithm which we call Modified-Earliest Due Date (M-EDD), achieves higher bitrate for the RT applications. Especially for the video traffic, results have remarkably demonstrated that the M-EDD scheduling algorithm has the capacity to clearly outperform the conventional scheduling schemes.