NDLI: A fast and efficient heuristic algorithm for the delay- and delay variation bound multicast tree problem

Content Provider	IEEE Xplore Digital Library
Author	Pi-Rong Sheu Shan-Tai Chen
Copyright Year	2001
Description	Author affiliation: Dept. of Electr. Eng., Nat. Yunlin Univ. of Sci. & Technol., Taiwan (Pi-Rong Sheu)
Abstract	More and more multicast communications are becoming real-time. In real-time communications, messages must be transmitted to their destination nodes within a certain amount of time; otherwise the messages will be rendered futile. To support real-time multicast communications, computer networks have to guarantee an upper bound on the end-to-end delay from the source node to each of the destination nodes. This is known as the multicast end-to-end delay problem. On the other hand, if the same message fails to arrive at each destination node at the same time, there will probably arise inconsistency or unfairness problem among users. This is related to the multicast delay variation problem. Our research subject is concerned with the minimization of multicast delay variation under the multicast end-to-end delay constraint. The problem has been proved to be NP-complete and a heuristic algorithm for it called DVMA (delay variation multicast algorithm) has been proposed. In this paper we find that in spite of DVMA's smart performance in terms of multicast delay variations, its time complexity is as high as O(klmn/sup 4/). It is strongly believed that such a high time complexity does not fit in a modern high-speed computer network environment. Therefore, we present an alternative heuristic algorithm with a much lower time complexity O(mn/sup 2/) and with a satisfactory performance. Computer simulations also testify that our algorithm is both fast and efficient.
Sponsorship	IEEE Comput. Soc.
Starting Page	611
Ending Page	618
File Size	783580
Page Count	8
File Format	PDF
ISBN	0769509517
DOI	10.1109/ICOIN.2001.905521
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2001-01-31
Publisher Place	Japan
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Heuristic algorithms Multicast algorithms Multicast protocols Multicast communication Computer networks Routing protocols Costs Delay effects Upper bound Application software
Content Type	Text
Resource Type	Article

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