NDLI: GD-Aggregate: A WAN Virtual Topology Building Tool for Hard Real-Time and Embedded Applications

Content Provider	IEEE Xplore Digital Library
Author	Qixin Wang Xue Liu Hou, J. Lui Sha
Copyright Year	2007
Description	Author affiliation: Univ. of Illinois at Urbana-Champaign, Urbana (Qixin Wang)
Abstract	The convergence of computer and physical world calls for next generation Wide Area Network (WAN) infrastructures for hard real-time and embedded applications. Such networks need virtual topologies to achieve scalability, configurability, and flexibility. Virtual topologies are made of virtual links, for which, the state-of-the-art building tool is Guaranteed Rate server based aggregates (GR- aggregates). However, common-practice weight assignment scheme couples GR-aggregate End-to-End (E2E) delay bound with aggregate's data throughput inverse proportionally. This is undesirable for many hard real-time embedded sensing/actuating applications, whose traffic has small data throughput but requires short E2E delay. We propose Guaranteed Delay server based aggregates (GD-aggregates), which allow assigning weights according to priorities instead of data throughput. This decouples E2E delay guarantee from data throughput, hence meets the needs of hard realtime embedded applications. In addition, GD-aggregates can be analyzed with simple closed form formulae, and can be easily planned with optimization tools.
Starting Page	379
Ending Page	388
File Size	492546
Page Count	10
File Format	PDF
ISBN	9780769530628
ISSN	10528725
DOI	10.1109/RTSS.2007.8
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-12-03
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Wide area networks Delay Throughput Network topology Aggregates Application software Convergence Computer networks Embedded computing Physics computing
Content Type	Text
Resource Type	Article
Subject	Computer Networks and Communications Hardware and Architecture Software

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