A proxy-assisted adaptation framework for object video multicasting
Jiangchuan Liu
Bo Li
Huai-Rong Shao
Wenwu Zhu
Ya-Qin Zhang
Sch. of Comput. Sci., Simon Fraser Univ., Burnaby, BC, Canada;
This paper appears in: Circuits and Systems for Video Technology, IEEE Transactions on
Publication Date: March 2005
Volume: 15,
Issue: 3
On page(s): 402- 411
ISSN: 1051-8215
INSPEC Accession Number: 8328996
Digital Object Identifier: 10.1109/TCSVT.2004.825532
Current Version Published: 2005-02-28
Abstract
Video multicast is a challenging problem due to the heterogeneous and best-effort nature of the Internet. In this paper, we present a novel video multicast framework that exploits the potential of object scalability offered by MPEG-4. Specifically, we introduce the concept of object transmission proxy (OTP), which filters incoming streams using object-based bandwidth adaptation to meet dynamic network conditions. Multiple OPTs can form an overlay network that interconnects diverse multicast islands with semi-uniform demands within each single island. We concur with the wisdom that an application best knows the utility of its data. Hence, the bandwidth-adaptation algorithm for the OTPs adaptively allocates bandwidth among video objects according to their respective utilities and then performs application-level filtering based on an effective stream classification and packetization scheme. Extensive simulation results demonstrate that our framework has substantial performance improvement over conventional bandwidth-adaptation schemes. It is particularly suitable for object-based video multicasting where the objects are of different importance.
Index
Terms
Available to subscribers and IEEE members.
References
Available to subscribers and IEEE members.
Citing Documents
Available to subscribers and IEEE members.
Cart
