Dynamic scheduling for scalable media transmission over cdma2000 1xEV-DO broadcast and multicast networks

Authors:
Kyungtae Kang;Jinsung Cho;Yongwoo Cho;Heonshik Shin
Affiliations:
School of Computer Science and Engineering, Seoul National University, Seoul, Korea;Dept. of Computer Engineering, Kyung Hee University, Youngin, Korea;School of Computer Science and Engineering, Seoul National University, Seoul, Korea;School of Computer Science and Engineering, Seoul National University, Seoul, Korea
Venue:
NETWORKING'05 Proceedings of the 4th IFIP-TC6 international conference on Networking Technologies, Services, and Protocols; Performance of Computer and Communication Networks; Mobile and Wireless Communication Systems
Year:
2005

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Abstract

The cdma2000 1xEV-DO mobile communication system provides broadcast and multicast services (BCMCS) to meet an increasing demand for multimedia data services. Currently, broadcast and multicast streams are scheduled using a slot-based static algorithm, which fails to support dynamic environments where broadcast contents are added or removed on-line. We propose a dynamic packet-scheduling algorithm that works with a retransmission scheme to enable scalable and adaptive service across cdma2000 1xEV-DO BCMCS environments. Integrated with earliest deadline first (EDF) real-time scheduling, the proposed algorithm not only adapts efficiently to dynamic contexts but also satisfies the real-time requirements of broadcast streams. Furthermore, by exploiting the fine granular scalable (FGS) characteristics of the MPEG-4 Part 2 standard, our scheme can adapt to a changing resource environment more flexibly. Simulation results show a significant improvement in average playback quality.