Packet multiplexers with adversarial regulated traffic

Srini Rajagopal, Martin Reisslein, Keith W. Ross

    Research output: Contribution to journalConference articlepeer-review


    We consider a finite-buffer packet multiplexer to which traffic arrives from several independent sources. The traffic from each of the sources is regulated, i.e., the amount of traffic that can enter the multiplexer is constrained by known regulator constraints. The regulator constraints depend on the source and are more general than those resulting from cascaded leaky buckets. We assume that the traffic is adversarial to the extent permitted by the regulators. For lossless multiplexing, we show that if the original multiplexer is lossless it is possible to allocate bandwidth and buffer to the sources so that the resulting segregated systems are lossless. For lossy multiplexing, we use our results for lossless multiplexing to estimate the loss probability of the multiplexer. Our estimate involves transforming the original system into two independent resource systems, and using adversarial sources for the two independent resources to obtain a bound on the loss probabilities for the transformed system. We show that the adversarial sources are not extremal on-off sources, even when the regulator consists of a peak rate controller in series with a leaky bucket. We explicitly characterize the form of the adversarial source for the transformed problem. We also provide numerical results for the case of the simple regulator.

    Original languageEnglish (US)
    Pages (from-to)347-355
    Number of pages9
    JournalProceedings - IEEE INFOCOM
    StatePublished - 1998
    EventProceedings of the 1998 17th Annual IEEE Conference on Computer Communications, INFOCOM. Part 1 (of 3) - San Francisco, CA, USA
    Duration: Mar 29 1998Apr 2 1998

    ASJC Scopus subject areas

    • General Computer Science
    • Electrical and Electronic Engineering


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