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Distributed Integrated Modular Avionics (DIMA) system can be seen as a distributed integration of sub-function areas with integrated modular structure and switched connection on airborne environment. During the process of integration, DIMA pays more attention to the consistency performance of mission-critical and safety-critical guarantee capability among integrated core processor (ICP) and universal...
Network virtualization provides an effective means of supporting multiple client infrastructures over a physical substrate. Now over the years, many different provisioning algorithms have been developed for network virtualization services, most recently driven by the growth in new cloud-computing paradigms. However, as user demands continue to evolve, there is growing need to schedule virtual network...
In this paper, we present a mechanism for scheduling multi-class traffic in a node of a packet-based communication network. We focus in particular on the output queues used for contention resolution at the output links of a network node. The mechanism, referred to as R-scheduling, is based on the use of in-queue reservations for future arriving data packets. Each traffic class has a given number of...
The Long Term Evolution (LTE) network is recognized as the next generation wireless network, which provides high bandwidth and low latency for emerging mobile applications. The issue of power saving is very crucial for the success of service deployment. This paper presents a novel downlink scheduling approach to reduce power consumption while maintaining the receiving quality of video streaming in...
Traditionally, system designers have attempted to improve system performance by scheduling the processing cores and by exploring different memory system configurations and there is comparatively less work done scheduling the accesses at the memory system level and exploring data accesses on the memory systems. In this paper, we propose a memory access pattern based controller (MAPC). MAPC organizes...
Through and spectral efficiency maximization are two of the most challenging issues to be addressed by current and future cellular networks. To achieve these goals however, radio resources need to be utilized in a coordinated manner to provide better network performance and ensure adequate user quality of service (QoS). The radio resources are controlled by LTE base station (eNodeB) and can be scheduled...
Service differentiation is known as on the classic and major tasks in IP networks. We propose a novel queuing method which benefits both “Less Impact Better Service” (LIBS) and fuzzy logic paradigms. LIBS leads us to a queuing method called non-congestive queuing, which prioritizes small packets when conditions permit to limit the delay impact of prioritization on congestive applications. In our proposed...
Real-time Ethernet variants gain importance for communication infrastructure of various time-critical domains, such as in-car networks. Synchronous time-triggered traffic guarantees strict timing but requires a detailed schedule for all participants. Designing these schedules by hand is extensive work and with increasing network size almost impossible. In this paper, we contribute a mapping of the...
This paper presents a server-based framework for task overrun management in multi-core real-time systems. Unlike most existing scheduling methods which usually assume a single upper bound of the Worst-Case Execution Time (WCET) for each task, our approach targets scenarios with task overruns. The main idea of our framework is to employ Synchronized Deferrable Servers (SDS) to deal with globally scheduled...
Distributed systems rely in communication networks, typically a bus, in order to exchange messages and fulfill their goals. However, message transmission is subject to interferences that ultimately can lead to message corruption. In systems where a high-reliability is sought, error recovery mechanisms can be deployed in order to give the required reliability level, and this can be done in the spatial...
We propose an architecture for a storage system of surveillance videos. Such systems have to handle massive amounts of incoming video streams and relatively few requests for replay. In such a system load (i.e., Write requests) scheduling is essential to guarantee performance. Large-scale data-storage system (LSDSS) is an emerging hosting facility for video-storage, which has a very high number of...
To encourage traffic offloading from the Macrocell to its overlaid Picocells in a Heterogeneous Network (HetNet), Cell Range Expansion (CRE) has been widely envisioned, enabling more Macro users to be offloaded to the less saturated Picocells, and enhancing the throughput performance of the entire system. By doing so, users in the Picocell expanded area may experience high interference from the Macrocell...
The Long Term Evolution (LTE) network provides high bandwidth, flexible modulation and coding scheme for emerging mobile applications. The issues of power saving and quality of services are very critical for the success of deployment of mobile applications. This paper presents a buffer aware scheduling approach to reduce power consumption while maintaining the receiving quality of video streaming...
Mobile devices are rapidly transforming the nature of the computing industry. It is promising to be the super future computers. Challenges including network bandwidth limitation, unavailability and limited storage are among the limitations facing Mobile Cloud Computing, MCC as the number of mobile devices accessing the cloud services are rapidly growing. This paper reviews state of the art of mobile...
Recent years, the demands of wireless networks in Taiwan grow fast because of users almost take a cam call or watch video streams on you tube. How to fulfill most users' demand under limited wireless internet resources situation becomes an important issue. In wireless networks resource management, the design of schedulers is the most important part. This paper proposed a scheduling scheme that meets...
Long Term Evolution advanced (LTE-A) is recognized as the main technology towards the broadband wireless access for emerging network services. In LTE, single carrier frequency division multiple access (SC-FDMA) is applied as the transmission technology for uplink traffic. This paper proposes a novel scheme to schedule the uplink traffic of both LTE and LTE-A UE in LTE-A network environment. The proposed...
Nowadays, multi-interface terminals in heterogeneous network may access Internet through various access technologies, and further aggregate network resources from multiple paths as much as possible. Multipath TCP exploits multiple paths simultaneously by stripping data of a connection over multiple TCP flows, each of which is through a disjoint path. However, it encounters the problem caused by the...
Efficient resource utilization is of a high importance for LTE/LTE-A network performance and provisioning of user quality of experience. The eNodeB (LTE base station) is responsible for controlling the radio resources between the user and LTE /LTE-A network. The resources can be scheduled in two schemes; either independently or jointly by considering both uplink (UL) and downlink (DL) together. Joint...
New PHY and MAC layer enhancements have been introduced in different IEEE 802.11 WLAN standards. These improvements have given birth to a wide range of bandwidth channels (up to 160MHz) and very high transmission data rates (> 1Gbps) to keep up with current and up-coming multimedia applications. The major reason for the inefficiency of different WLANs is that the current MAC layer randomly allocates...
In this paper we propose a utility-based scheduling mechanism for mixed traffic in wireless networks to mitigate the problem that current scheduling algorithms cannot have a good performance in mixed traffic. The proposed algorithm called UBSA (Utility-Based Scheduling Algorithm) works in wired-wireless hybrid networks. Packets of diverse QoS (Quality of Service) classes are allocated to different...
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