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The development of safety-critical embedded applications in domains such as automotive or avionics is an exceedingly challenging intellectual task. This task can, however, be significantly simplified through the use of middleware that offers specialized fault-tolerant services. This middleware must provide a high assurance level that it operates correctly.(More)
In this paper, a Traffic Separation mechanism (TSm) is proposed for CSMA-based networks. The TSm mechanism is intended to be used as an underlying traffic separation mechanism able to prioritize traffic in CSMA-based networks. It allows the coexistence of standard CSMA (non-modified) stations with TSm (modified) stations in the same network domain. When a(More)
Keeping up with the timing constraints of real-time traffic in wireless environments is a hard task. One of the reasons is that the real-time stations have to share the same communication medium with stations that are out of the sphere-of control of the real-time architecture. That is, with stations that generate timing unconstrained traffic. The VTP-CSMA(More)
Wireless Mesh Networks (WMNs) are a promising communication technology that may offer greater flexibility and reliability, when compared to traditional wireless networks. WMNs open up new applications domains, but still need to find efficient mechanisms to deal with scalability and timeliness requirements. This paper proposes a scheme for Path Selection and(More)
We report ongoing work on a group membership protocol specially designed to take advantage of the support of both static and dynamic scheduling in new TDMA-based protocols being proposed for safety critical applications, such as Flex-Ray. In contrast with previous group membership protocols for TDMA-based networks, ours does not require the pre-allocation(More)