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The IEEE 802.16 defines two basic operational modes: point-to-multipoint (PMP) and mesh. The mesh mode provides two scheduling algorithms for assigning time slots to each network node: centralized and distributed. The aim of this paper is to address the Quality of Services (QoS) problem in coordinated distributed scheduling in mesh mode by proposing a new architecture for QoS-aware IEEE 802.16 mesh...
Technology is continuously developing in the direction of multi-core systems. However, green computing requirements make power consumption an important issue for embedded multi-core applications. This study introduces an energy-efficient algorithm for scheduling periodic real-time tasks in multi-core systems. The proposed algorithm can reduce the power consumption and maintain the reliability of systems...
Admission control test aims at determining whether an arriving task can be scheduled together with the tasks already running in a system, so that it can prevent system from overload and collapse. Although a number of schedulability tests have been studied, they are incomparable if the determination conditions are different. In order to keep high system utilization, the problem of choosing a reliable...
CBTC (Communication Based Train Control) will be based on mobile communication, which the key problem is how to support reliability of control data transmission to improve track utilization and enhance train safety. This paper proposed a kind of real-time transmission model for high speed train end-to-end control data operation, which based on circuit switched data service by traditional wireless...
As the number of application areas for wireless technologies grows, the need for providing both predictable and reliable communication over wireless networks becomes apparent. Cooperative embedded systems for industrial automation are one example of systems with these needs. Previously, we developed a framework for reliable real-time communication in a single-hop wireless network with a logical star...
Power gating induced power/ground (P/G) noise is a major reliability problem facing by low power MPSoCs using power gating techniques. Powering on and off a process unit in MPSoCs will induce large P/G noise and can cause timing divergence and even functional errors in surrounding processing units. P/G noise is different from thermal or energy which is an accumulative effect. The noise level should...
For an application in public-resource computing environments, providing reliable scheduling based on resource reliability evaluation is becoming increasingly important. Most existing reputation models used for reliability evaluation ignore the time influence. And very few works use a robust genetic algorithm to optimize both time and reliability for a workflow application. Hence, in this paper, we...
Dynamic voltage and frequency scaling (DVFS) technique is emerging in various battery-operated embedded systems to reduce the energy consumption and prolong the working life of the system. However, DVFS technology has been proved to have some direct and negative effects on the reliability of the system. Most existing schedulers of real-time tasks based on DVFS only focus on minimizing energy consumption...
The dynamic voltage scaling (DVS) technique is the basis of numerous state-of-the-art energy management schemes proposed for real-time embedded systems. However, recent research has illustrated the alarmingly negative impact of DVS on task and system reliability. In this paper, we consider the problem of processing frequency assignment to a set of real-time tasks in order to maximize the overall reliability,...
The Department of Electronic Engineering of Beijing Institute of Technology is integrating emerging interconnect technologies with other high-performance technologies to meet the demanding requirement of future, real-time signal processing applications. For next-generation, scalable, modular and adaptable signal-processing system, a universal, flexible and high-performance signal processing module...
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