PLP scheduling schemes for MPLP transmission of SVC services in DVB-T2

摘要

This paper proposes two new scheduling schemes in Digital Video Broadcasting Second Generation Terrestrial (DVB-T2) for delivery of scalable video traffic. The growing demand for video services poses a major challenge in resource management. Efficient video coding and scheduling scheme are of paramount importance in ensuring that the limited bandwidth is utilized effectively. Efficient video coding reduces the bit rate of a video without too much loss in quality. H.264/Scalable Video Coding (SVC) allows different versions of the same video to be represented in one bit-stream as opposed to simulcast which encodes the different versions separately. A good scheduling scheme improves system performance without compromising the Quality of Service (QoS) requirements of varying services. The aim of this paper is to propose new scheduling schemes adopted from packet scheduling schemes in other wireless communication systems called Modified Largest Weighted Buffer Occupancy First (MLWBOF) and Exponential/Proportional Fair (EXP/PF) which provide a good trade-off between QoS, fairness and throughput. The performance of the proposed schemes is compared with an existing scheme through simulations. The evaluation is conducted in terms of system throughput, fairness and Baseband Frame (BB) loss.