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Virtualized systems such as public and private clouds are emerging as important new computing platforms with great potential to conveniently deliver computing across the Internet and efficiently utilize resources consolidated via virtualization. Resource management in virtualized systems remains a key challenge because of their intrinsically dynamic and complex nature, where the applications have...
Low Earth Orbit (LEO) satellites networks can provide multimedia service and plays an increasing1y important role in the exploitation of space. However, one of the challenges in LEO satellites networks is that the services are suffered from high symbol error, limited storage space and limited available energy. To analyze the performance of the service in LEO satellites networks, a model, based on...
The performance of traditional congestion control strategy is not very well. We create a multi_larder service rate congestion control (MSRCC) system to improve the adaptability in different network condition. The system has multi_larder service rate to adapt various necessary. In the LEO network, it can improve the throughput ability. And the simulation shows the MSRCC scheme has a better work ability.
Existing parallel file systems are unable to differentiate I/Os requests from concurrent applications and meet per-application bandwidth requirements. This limitation prevents applications from meeting their desired Quality of Service (QoS) as high-performance computing (HPC) systems continue to scale up. This paper presents vPFS, a new solution to address this challenge through a bandwidth virtualization...
Orthogonal Frequency Division Multiple Access (OFDMA) is the multiple access technology that may be used in the next generation broadband wireless communication systems. We devise some new algorithms which use the linear combination of two variables as the objective matrix. In these algorithms, both cell throughput and user fairness are considered. To guarantee the user quality of service (QoS), we...
Weakly hard real-time application requires that scheduling algorithm should provide service satisfied QoS parameter, so a new fixed-priority scheduling algorithm with (m,k)-firm guarantee is presented. It assigns scheduling priority of task based on period and QoS parameter, and the task is switched between preemptive state and optional state to reflect its pressure. Schedulability test inequation...
As the integration of prevailing voice over Internet protocol (VoIP) technology and wireless local area network (WLAN), voice over WLAN (VoWLAN) is expected to experience a dramatic growth in the near future. However, increasing voice capacity of the system still remains a problem. In this paper, the voice capacity of "waiting-time dependent backoff (WDB)" algorithm proposed in our previous...
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