Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 13 of 13 for “"Protocol Layers"”.
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Multilevel Parallel Communications
… and the "lower" level. At the upper level, N protocol processors perform functions included in the transport and network layers. At the lower level, M channels provide data and physical layer functions. The resulting system provides very high bandwidth to an application. A key concept of this …
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Cross-layer optimizations in multi-hop ad hoc networks
… it requires cooperation between different protocol layers (MAC, routing, transport). In particular, MAC and routing protocols could be considered mutually cooperative protocol layers. When a route is established, the exposed and hidden terminal problems at MAC layer may decrease the …
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An access layer protocol for parallel networks
… Parallelism can be employed at the different layers of the Open Systems Interconnection (OS1) reference model. This research proposes and analyzes a technique that permits the use of different degrees of parallelism at different protocol layers. A new protocol layer, called the access layer is …
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Unified cross-layer framework: a generic platform for cross-layer design experimentation
… information to be shared and controlled across protocol layers. However, much of the previous research work in this area is simulation-based. The main obstacle which hinders researchers from real implementation is the complexity involved in lower-level driver modification and kernel programming. …
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Network time : synchronisation in real time distributed computing systems
… with definable quality of service from the protocol layers has lead to the possibility of using the existing data network to distribute the time. This thesis demonstrates that by using system integration and implementation of commercial off the shelf (COTS) products it is possible to …
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High Performance and Reliable Gbps Spacecraft Data Handling System
… Gbps SpaceFibre data interface and communication protocol are critically evaluated through specialised test equipment and software to define a test methodology for future SpaceFibre based systems. The modelling and analysis of the payload data system SpaceFibre network and its simulation on a …
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Cooperative diversity in wireless networks : algorithms and architectures
… combat multipath fading across multiple protocol layers in wireless networks, this dissertation develops energy-efficient algorithms that employ certain kinds of cooperation among terminals, and illustrates how one might incorporate these algorithms into various network architectures. In …
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A Business Framework for Dynamic Spectrum Access in Cognitive Networks
… network elements consisting of nodes, protocol layers and policies have been unable to make intelligent decisions. Modern networks often operate in environments where network resources (e.g. node energy, link quality, bandwidth, etc.), application data (e.g. location of user) and user …
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Energy-Efficient Medium Access Control Protocols and Network Coding in Green Wireless Networks
… These approaches are based on a stack of protocol layers aiming to maximize performance-related metrics, such as throughput or Quality of Service (QoS), while paying less attention to energy efficiency. Although the focus has shifted to energy efficiency recently, most of the existing …
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Cross-Layer Optimization: System Design and Simulation Methodologies
… is their dynamic behavior. The conventional protocol stack is inflexible as various protocol layers communicate in a strict manner. In such a case the layers are designed to operate under the worst conditions as opposed to adapting to changing conditions. This leads to inefficient use of …
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Wireless personal area networks and free-space optical links
… links, as well as the performance of the higher layers of two major Wireless Personal Area Network (WPAN) technologies: IrDA and Bluetooth. Recent advancesin wireless technology have made it possible to put networking technology into small portable devices. During the past few years, WPAN …
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Integration of Open-Source Networks
Global System for Mobile Communications (GSM) networks are receiving increasing attention in the open-source community. Open-source software allows for deployment of a mobile cellular network with lower costs, more customization, and scalable control. Two popular projects have emerged that offer …
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MODULAR SOFTWARE ARCHITECTURE AND IMPLEMENTATION OF OSI UPPER LAYER PROTOCOLS
The upper layer protocols of the Open System Interconnection (OSI) refer to the session, presentation, and application layers of the seven-layer OSI Reference Model. These protocols enable application processes running on different computers to exchange Information across a heterogeneous network. …