Abstract
This paper considers the support of real-time applications in an Integrated Services Packet Network (ISPN). We first review the characteristics of real-time applications. We observe that, contrary to the popular view that real-time applications necessarily require a fixed delay bound, some real-time applications are more flexible and can adapt to current network conditions. We then propose an ISPN architecture that supports two distinct kinds of real-time service: guaranteed service, which is the traditional form of real-time service discussed in most of the literature and involves pre-computed worst-case delay bounds, and predicted service which uses the measure performance of the network in computing delay bounds. We then propose a packet scheduling mechanism that can support both of these real-time services as well as accommodate datagram traffic. We also discuss two other aspects of an overall ISPN architecture: the service interface and the admission control criteria.
Keywords
Computer scienceDatagramComputer networkNetwork packetQuality of serviceScheduling (production processes)Network delayAdmission controlPacket switchingNetwork architectureDistributed computingIntegrated servicesReal-time computing
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Publication Info
- Year
- 1992
- Type
- article
- Pages
- 14-26
- Citations
- 850
- Access
- Closed
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Cite This
David D. Clark,
Scott Shenker,
Lixia Zhang
(1992).
Supporting real-time applications in an Integrated Services Packet Network.
, 14-26.
https://doi.org/10.1145/144179.144199
Identifiers
- DOI
- 10.1145/144179.144199