NDLI: A middleware for reliable soft real-time communication over IEEE 802.11 WLANs

Content Provider	IEEE Xplore Digital Library
Author	Toscano, E. Bello, L.L.
Copyright Year	2011
Description	Author affiliation: Department of Electrical, Electronics and Computer Engineering, University of Catania, Catania, Italy (Toscano, E.; Bello, L.L.)
Abstract	This paper describes a middleware layer for soft real-time communication in wireless networks devised and realized using standard WLAN hardware and software. The proposed middleware relies on a simple network architecture comprising a number of stations that generate real-time traffic and a particular station, called Scheduler, that coordinates the transmission of the real-time packets using a polling mechanism. The middleware combines EDF scheduling with a dynamic adjustment of the maximum number of transmission attempts, so as to adapt the performance to fluctuations of the link quality, thus increasing the communication reliability, while taking deadlines into account. After describing the basic communication paradigm and the underlying concepts of the proposed middleware, the paper describes the target network configuration and the software architecture. Finally, the paper assesses the effectiveness of the proposed middleware in terms of PER, On-Time Throughput, and Deadline Miss Rate, presenting the results of measurements performed on real testbeds.
Starting Page	115
Ending Page	122
File Size	1501495
Page Count	8
File Format	PDF
ISBN	9781612848181
e-ISBN	9781612848204
e-ISBN	9781612848198
DOI	10.1109/SIES.2011.5953653
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-06-15
Publisher Place	Sweden
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Real time systems Middleware Software Job shop scheduling Protocols Wireless networks
Content Type	Text
Resource Type	Article

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