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Title:
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Supporting Real-Time Applications in an Integrated Services Packet Network: Architecture and Mechanism |
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Author:
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Shenker, Scott; Clark, David D.; Zhang, Lixia |
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Abstract:
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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 measured 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. |
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URI:
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http://hdl.handle.net/1721.1/1543
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Issue Date:
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1992-08 |
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Keywords:
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real-time applications, Integrated Services Packet Network, ISPN, fixed delay bound |
