Utilizing multi-channel multicast to provide scheduled video delivery

  • Authors:

  • Chow-Sing Lin

  • Affiliations:

  • Department of Information Management Southern Taiwan University of Technology, Tainan, Taiwan

  • Venue:
  • Computer Communications
  • Year:
  • 2006

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Abstract

In reality, not all users require instant video access. People are used to planning ahead, including when they wish to watch videos. This fact triggered the creation of a new video-scheduling paradigm, named Scheduled Video Delivery (SVD). It lures clients into making requests as early as possible in order to increase stream scheduling flexibility and pricing-based resource utilization. The existing SVD single-channel request scheduling algorithms, such as MEDF and LPF, have already successfully demonstrated the feasibility of SVD. In this paper, we propose the Multi-Channel Multicast Delivery (MCMD) stream-scheduling algorithm for SVD. With MCMD, a client can receive segments of the same requested video being transmitted on channels. Its patching and multi-channel receiving capabilities further improve resource utilization and the degree of multicast in delivering continuous media. The performance study shows that MCMD has a lower rejection rate and higher channel utilization than MEDF and LPF on SVD, both with and without price incentives.