This paper presents the new real time approach for air traffic control in the transit aerospace based on least laxity first algorithm one of the most popular real time scheduling algorithms. The proposed method consis...
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ISBN:
(纸本)9781450353069
This paper presents the new real time approach for air traffic control in the transit aerospace based on least laxity first algorithm one of the most popular real time scheduling algorithms. The proposed method consists to modulate the transit airspace by the ATC-Agent, it consists to separate and to manage the air traffic in the transit airspace with optimal and safety manner Also the ATC-agent negotiates with another ATC-agent of the adjacent transit aerospace. Our approach is developed to analyze and optimize the Air Traffic Control process in the transit airspace and it's compared by a classical method.
We present a new scheduling algorithm, called PL that is work-conserving and in terms of schedulability, optimal on multiprocessors for a synchronous periodic task set. The PL algorithm is a laxity based algorithm and...
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We present a new scheduling algorithm, called PL that is work-conserving and in terms of schedulability, optimal on multiprocessors for a synchronous periodic task set. The PL algorithm is a laxity based algorithm and ensures execution of a task with approximate proportional fairness at each task's period. Existing optimal algorithms on multiprocessors may cause excessive scheduling decisions and preemptions or may not be applied in a discrete environment. The proposed algorithm can be applied in a discrete environment and reduce the number of scheduling decisions and preemptions compared with a Pfair algorithm. (C) 2010 Elsevier B.V. All rights reserved.
Time-critical requirements of real time systems are provided by software applications running on real time operating systems. These software tasks must be scheduled based on software and hardware events. There are som...
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ISBN:
(纸本)9781728175652
Time-critical requirements of real time systems are provided by software applications running on real time operating systems. These software tasks must be scheduled based on software and hardware events. There are some services (priority based preemption etc.) in real time operating systems to control software tasks. But in some situations there is a need for scheduling algorithms in real time systems. This need arises especially when time-critical software tasks need to run at different working periods and on a specific timeline. Different scheduling algorithms can be selected to meet the requirements of the system. The flight software that runs on the real-time operating system, especially on satellite platforms, is responsible for time-critical tasks. Main goals of this paper are providing analyze of scheduling algorithms using in real time operating systems, giving the method which is used to apply scheduling algorithms in a real time operating system and providing performance results of these scheduling algorithms obtained as a result of this application. In addition, it is mentioned that which of these algorithms are preferred in space domain.
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