Multipath routing for video unicast over bandwidth-limited networks
- 13 November 2002
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
- Vol. 3, 1963-1967
- https://doi.org/10.1109/glocom.2001.965916
Abstract
Video applications, such as video-on-demand systems, in general have bandwidth and delay constraints. Such QoS requirements can no longer be guaranteed when video is transmitted with the traditional shortest-path routing over a bandwidth-limited network such as the Internet. We propose multipath routing algorithms for video unicast so as to meet a certain bandwidth requirement with minimum start-up delay (and hence low user buffer requirement). We first formulate the problem which in its most general form is difficult to solve. However, for the special case where the network links are of unit capacity, we present an exact solution using a k-shortest-disjoint paths algorithm with video rescheduling in the source. For the most general case, we propose an efficient heuristic based on max-flow and shortest path algorithms. The complexity of such an algorithm is only O(|V|/sup 3/), where |V| is the number of nodes in the network. Extensive simulation results show that the multipath approach meets the bandwidth requirement with a delay close to that of shortest-path routing.Keywords
This publication has 6 references indexed in Scilit:
- A practical approach to minimizing delays in Internet routingPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2003
- Optimal bandwidth/delay tradeoff for feasible-region-based scalable multimedia schedulingPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- Optimal multicast smoothing of streaming video over an internetworkPublished by Institute of Electrical and Electronics Engineers (IEEE) ,1999
- Analysis of multi-path routingIEEE/ACM Transactions on Networking, 1999
- Distributed algorithms for computing shortest pairs of disjoint pathsIEEE Transactions on Information Theory, 1993
- Disjoint paths in a networkNetworks, 1974