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A Pipelined Ring Network - Heterogeneous Real-time in Radar Signal Processing
Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE).
Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE).ORCID iD: 0000-0002-6526-3931
2003 (English)In: Applied Informatics: AI 2003, ACTA Press , 2003, p. 825-832Conference paper, Published paper (Refereed)
Abstract [en]

The paper presents results of simulations done with the CCR-EDF (Control Channel based Ring network with EDF scheduling) pipelined ring network together with a case study of system area networks for radar signal processing. The topology of the network is a pipelined unidirectional fibre-ribbon ring that supports several simultaneous transmissions in non-overlapping segments. Access to the network is divided into slots. In each slot the node that has the highest priority message is permitted to transmit. This feature of the medium access protocol gives the network the functionality for earliest deadline first scheduling. Different classes of traffic are supported for the user. These are guaranteed logical real-time channels (LRTC), best effort (BE) channels and non real-time (NRT) traffic. The case study used is from an airborne radar signal processing (RSP) application. Results of the simulations indicate that the CCR-EDF network works well with the RSP application studied.

Place, publisher, year, edition, pages
ACTA Press , 2003. p. 825-832
Series
Applied Informatics, ISSN 1027-2666 ; 21
Keywords [en]
Heterogeneous, Real-time, Radar, Ring network, Optical, Pipeline
National Category
Computer Sciences
Identifiers
URN: urn:nbn:se:hh:diva-405Local ID: 2082/729ISBN: 0-88986-341-5 OAI: oai:DiVA.org:hh-405DiVA, id: diva2:237584
Conference
The 21st IASTED International Multi-Conference on Applied Informatics (AI 2003), February 10-13, 2003, Innsbruck, Austria, Feb. 10-13, 2003
Available from: 2007-01-18 Created: 2007-01-18 Last updated: 2018-01-13Bibliographically approved
In thesis
1. Protocols with Heterogeneous Real-Time Services for High-Performance Embedded Networks
Open this publication in new window or tab >>Protocols with Heterogeneous Real-Time Services for High-Performance Embedded Networks
2002 (English)Licentiate thesis, comprehensive summary (Other academic)
Abstract [en]

Network protocols for applications that demand high performance and heterogeneous real-time services are presented. These protocols control the medium access to the network and offer additional features to the user, both different user services for traffic and services for parallel and distributed real-time processing. The network architecture assumed is a unidirectional pipelined optical ring.

Radar Signal Processing (RSP) is a typical application area. Such a system contains many computation nodes that are interconnected in order to co-operate and thereby achieve higher performance. The computing performance of the whole system is greatly affected by the choice of network. Computing nodes in a parallel computer for RSP should be tightly coupled, i.e., communications cost (e.g. latency) between nodes should be small, so that the whole system can be perceived as a single unit. This is possible if a suitable network with an efficient protocol is used.

There is an industrial need for new high-performance networks with support for the, often heterogeneous, real-time requirements found in (often embedded) applications such as RSP and other areas such as multimedia. The traffic this kind of network can be classified according to its requirements. The proposed protocols partition the traffic into three classes with distinctly different qualities. These classes are traffic with hard real-time demands, such as mission critical commands, traffic with soft real-time demands, such as process data (a deadline miss here only leads to decreased performance) and, finally, traffic with no real-time constraints at all. The contributions of the present thesis are protocols that integrate heterogeneous real-time services for the three traffic classes.

The performance of the proposed protocols is evaluated through simulations and analysis. It is shown that the protocol is an efficient choice for RSP systems. A brief survey of related technologies is included in the thesis. These are studied from the perspectives of application, architecture and user service.

Place, publisher, year, edition, pages
Göteborg: Chalmers tekniska högskola, 2002. p. x, 26
Series
Technical report. L ; 14
Keywords
Optical, Ring, Pipeline, Distributed, Parallel-Processing, Real-time, SAN, System Area Network, Heterogeneous, Service
Identifiers
urn:nbn:se:hh:diva-376 (URN)2082/700 (Local ID)2082/700 (Archive number)2082/700 (OAI)
Presentation
(English)
Available from: 2007-01-10 Created: 2007-01-10 Last updated: 2010-02-11Bibliographically approved

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Jonsson, Magnus

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Citation style
  • apa
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Output format
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