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International Journal of Digital Multimedia Broadcasting
Volume 2012 (2012), Article ID 717538, 7 pages
http://dx.doi.org/10.1155/2012/717538
Research Article

An Efficient Periodic Broadcasting with Small Latency and Buffer Demand for Near Video on Demand

Department of Computer Science and Information Engineering, National Central University, Chung-Li 32054, Taiwan

Received 31 January 2012; Accepted 3 February 2012

Academic Editor: Hsiang-Fu Yu

Copyright © 2012 Ying-Nan Chen and Li-Ming Tseng. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Broadcasting Protocols can efficiently transmit videos that simultaneously shared by clients with partitioning the videos into segments. Many studies focus on decreasing clients' waiting time, such as the fixed-delay pagoda broadcasting (FDPB) and the harmonic broadcasting schemes. However, limited-capability client devices such as PDAs and set-top boxes (STBs) suffer from storing a significant fraction of each video while it is being watched. How to reduce clients' buffer demands is thus an important issue. Related works include the staircase broadcasting (SB), the reverse fast broadcasting (RFB), and the hybrid broadcasting (HyB) schemes. This work improves FDPB to save client buffering space as well as waiting time. In comparison with SB, RFB, and HyB, the improved FDPB scheme can yield the smallest waiting time under the same buffer requirements.