Strategic directions in real-time and embedded systems
ACM Computing Surveys (CSUR) - Special ACM 50th-anniversary issue: strategic directions in computing research
MPEG transmission schemes for a timed token medium access control network
ACM SIGCOMM Computer Communication Review
Elastic Scheduling for Flexible Workload Management
IEEE Transactions on Computers
Introduction to the Special Issue on Flexible Scheduling
Real-Time Systems - Flexible Scheduling on Real-Time Systems
Controlling the Process with Distributed Multimedia
IEEE MultiMedia
Pre-Run-Time Scheduling to Reduce Schedule Length in the FieldBus Environment
IEEE Transactions on Software Engineering
The FTT-Ethernet Protocol: Merging Flexibility,Timeliness and Efficiency
ECRTS '02 Proceedings of the 14th Euromicro Conference on Real-Time Systems
The Time-Triggered Model of Computation
RTSS '98 Proceedings of the IEEE Real-Time Systems Symposium
The Time-Triggered Ethernet (TTE) Design
ISORC '05 Proceedings of the Eighth IEEE International Symposium on Object-Oriented Real-Time Distributed Computing
Performance evaluation of smoothing algorithms for transmittingprerecorded variable-bit-rate video
IEEE Transactions on Multimedia
Feedback scheduling of priority-driven control networks
Computer Standards & Interfaces
Study of the Path Average Lifetime in Ad Hoc Networks Using Stochastic Activity Networks
ASMTA '09 Proceedings of the 16th International Conference on Analytical and Stochastic Modeling Techniques and Applications
Journal of Network and Computer Applications
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Recently, much attention has been given to the need to endow industrial communication networks used in real-time systems with flexible scheduling. This allows control systems to adapt to the variations in the requirements of traffic generated by modifications in the environment of the system, or changes in its structure. Another active area is multimedia transmission in industrial environments. In this paper, a flexible scheduling system for Profibus networks is presented. There are two objectives. Firstly to allow the characteristics of real-time traffic to deal in run time in a fieldbus and secondly to enable the scheduling of video traffic for industrial monitoring purposes. The system proposed allows, with regard to traditional Profibus MAC/scheduling, rapid dynamic adaptation to the new requirements, minimizing the bandwidth necessary for its management and maximizing the use of the available bandwidth. As a result there is an improvement in quality of video sources as well as the number of video sources, which can co-exist with the control traffic, without affecting its QoS.