Improved Message Forwarding for Multi-Hop HaRTES Real-Time Ethernet Networks

• Type: Article in International Scientific Journal
• Date: 2016-07

Authors

Mohammad Ashjaei (Author) Other; Luis Silva (Author) Other; Moris Behnam (Author) Other; Paulo Pedreiras (Author) Other; Reinder J. Bril (Author) Other; Luis Almeida (Author) FEUP; Thomas Nolte (Author) Other

Journal

Title: Journal of Signal Processing Systems

Vol. 84

Pages: 47-67

ISSN: 1939-8018

Publisher: Springer Nature

Indexing

ISI Web of Knowledge - 6 Citations

ISI Web of Science

Scopus - 12 Citations

Scientific classification

CORDIS: Technological sciences > Engineering > Communication engineering

FOS: Engineering and technology > Electrical engineering, Electronic engineering, Information engineering

Other information

Authenticus ID: P-00G-4KZ

DOI: 10.1007/s11265-015-1010-8

Abstract (EN): Nowadays, switched Ethernet networks are used in complex systems that encompass tens to hundreds of nodes and thousands of signals. Such scenarios require multi-switch architectures where communications frequently occur in multiple hops. In this paper we investigate techniques to allow efficient multi-hop communication using HaRTES switches. These are modified Ethernet switches that provide real-time traffic scheduling, dynamic bandwidth management and temporal isolation between real-time and non-real-time traffic. This paper addresses the problem of forwarding traffic in HaRTES networks. Two methods have been recently proposed, namely Distributed Global Scheduling (DGS) that buffers traffic between switches, and Reduced Buffering Scheme (RBS), that uses immediate forwarding. In this paper, we discuss the design and implementation of RBS within HaRTES and we carry out an experimental validation with a prototype implementation. Then, we carry out a comparison between RBS and DGS using worst-case response time analysis and simulation. The comparison clearly establishes the superiority of RBS concerning end-to-end response times. In fact, with sample message sets, we achieved reductions in end-to-end delay that were as high as 80 %.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 21