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Abstract The widespread use of computers and commun The widespread use of computers and communication networks creates a distributed computing environment where there is the demand to build applications with every increasing requirements in what concerns dependability and real-time characteristics. However, this situation induces requirements on the communication subsystems that cannot be easily satisfied by most existing infrastructures without adaptations. These systems are not usually fully synchronous, presenting a high variability in response time that makes it difficult to achieve real-time operation. To improve this situation, we propose the use of the quasi-synchronous approach, where we use a small synchronous part of the system to control and validate the other parts. In the context of this paper, our target communication infrastructure is the ISO 8802/3 LAN (Ethernet), which is a low cost network with a large installed base. Being able to improve the real-time characteristics of such environment offers a very cost-effective solution to a large class of applications. In order to be able to build our proposed architecture in this setting, we introduce some mechanisms to enforce the real-time characteristics of the access control layer. aracteristics of the access control layer.
Author Carlos Almeida + , José Rufino +
Booktitle Proceedings of the International Conference on Communications in Computing (CIC2001). Las Vegas, Nevada, June 2001.  +
Key CAlmeidacic2001  +
Month jun  +
NumPubDate 2,001.06  +
ResearchLine Timeliness and Adaptation in Dependable Systems (TADS) +
Title Improving real-time characteristics of a COTS Local Area Network  +
Type inproceedings  +
Url  +
Year 2001  +
Categories Publication  +
Modification dateThis property is a special property in this wiki. 14 January 2013 14:41:39  +
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