نتایج جستجو برای: cross layer
تعداد نتایج: 759868 فیلتر نتایج به سال:
In this paper, we propose a novel scheduling scheme that will provide quality-of-service (QoS) support in the downlink (DL) of a WiMAX system. The proposed Subchannel mapping Scheduling Algorithm completely exploits the physical layer properties of the Orthogonal Frequency Division Multiple Access (OFDMA) in order to improve the throughput of the WiMAX network at the same time improving the QoS...
Intrusion is something which is unsolicited activity and which might be used to interrupt the functions of wireless network. If we talk about wireless networks, having centralized monitoring policy; therefore it is very much easy to detect and eliminate intrusions efficiently. But when we look forward to wireless scenario, especially in the multi hop wireless network, intrusion activities are m...
The growing demand for wireless applications and services on the one hand, and limited available radio spectrum on the other hand have made cognitive radio (CR) a promising solution for future mobile networks. It has attracted considerable attention by academia and industry since its introduction in 1999 and several relevant standards have been developed within the last decade. Cognitive radio ...
In this paper, we propose QoS aware MAC protocol for Wireless Sensor Networks and its cross layer extension to network layer for providing QoS in delay sensitive WSN scenarios. In WSNs, there can be two types of traffic one is event driven traffic which requires immediate attention and another is periodic reporting. Event driven traffic is classified as Class I(delay sensitive) traffic and peri...
Next-generation broadband satellite systems will have the capability to provide costeffective universal broadband access for the users. In order to meet users’ requirements on high quality multimedia services, many enhancements have to be made on the existing satellite technologies. One of the promising methods is the introduction of cross-layer design. There are several advantages of a layered...
Cross-layer optimization is an effective mechanism to improve wireless network performance and efficiency. Although cross-layer optimization is not a new technique, it can be applied effectively to different wireless technologies to handle different problems while still conforming to the wireless standards. Utility functions are constructed from measurements of the different OSI layers to provi...
Today, application schedulers are decoupled from routing level schedulers, leading to sub-optimal throughput for cloud computing platforms. In this thesis, we propose a cross-layer scheduling framework that bridges the application level scheduler with the routing level scheduler (SDN). We realize our framework in a batch-processing framework (Hadoop [1]) and a streamprocessing framework (Storm ...
The last decade has brought a rapid growth in demand for fast and error-resilient telecommunication services. In accordance with this growth, broadband wireless networks have become an integral part of the global communication infrastructure. Provisioning of quality-of-service (QoS) in broadband wireless networks requires coping with the challenges brought by the wireless interface, and allocat...
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