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 20 of 41 for “"user mobility"”.
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Mobile ID protocol: A badge-activated application level handoff of a multimedia streaming to support user mobility
… are ""machine- oriented"", and do not support user mobility. In this thesis, I designed and implemented a badge-activated application-level handoff protocol, called Mobile ID protocol, to implement user mobility support for multimedia streaming applications. The protocol has a location-aware …
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An SDN-based Framework for QoSaware Mobile Cloud Computing
… tasks. However, due to the ubiquitous and mobility nature, providing time critical rich applications over remote cloud infrastructure is a challenging task for mobile application service providers. Therefore, according to the literature, close proximity placement of cloud services has been …
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Resource Management In 3G Systems Employing Smart Antennas
… data, multimedia, and voice services to mobile users. The integration of such heterogeneous traffic types implies that the network must provide differentiated Quality of Service (QoS). Beam forming techniques have been proposed to increase the spectral efficiency of the wireless channel. Using …
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Structure-utilized, Adaptive, and Efficient ML-based Proportional-Fair Scheduling in MIMO Networks for Non-stationary Channels
… Fair (PF) scheduling is widely used in multi-user MIMO systems to balance throughput and fairness. However, PF scheduling is an NP-hard problem, and hence, practical deployments approximate the optimal solution for lower latency at the cost of sub-optimal performance. More recently, machine …
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A framework for fast handoff schemes in wireless ATM networks
… that extends the fixed ATM standard to support user mobility in future WATM networks. The WATM architecture allows for the migration of fixed ATM networks without major modifications. Thus most of the mobility functions are implemented on the wireless access network. The most important component …
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Quantitative Interference and Capacity Analysis of Broadband Multi-Hop Relaying Networks
… channel impairments such as Doppler Shift due to user mobility per hop, high-power amplifier distortions when amplifying the transmitted/relayed OFDM symbol per hop, as well as the cumulative effects of these impairments over multi-hop relaying channels. It is shown that the resulting …
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Modeling mobility patterns
… focuses on analysis and model generation for user mobility patterns given a sequence of observed WiFi signals. Built on the Android platform, the data collection mobile application gathers WiFi sensor readings (BSSID and SSID). The implemented pipeline performs location identification using an …
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Evaluating caching mechanisms in future Internet architectures
… Internet, we look at how the added variable of user mobility can affect how these architectures perform under different loads. Evaluating the effects of in-network storage and caching in these novel architectures will provide another facet to understanding how viable of an alternative they would …
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Energy-efficient wireless transmitter architecture for mobile multimedia
… average efficiency. Furthermore, the nature of user mobility mandates reliability over environmental changes and device aging. To address these two pervasive issues of efficiency and reliability, we pursue solutions at both the architectural and algorithmic level. This thesis proposes …
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Handover in digital cellular mobile communication systems
… in a cellular environment. It incorporates mobility parameters under generalized conditions, so that the model could be tailored to be applicable in most cellular environments. This model is then used to characterisendifferent mobility-related traffic parameters in a cellular system. These …
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Efficient resource allocation and call admission control in high capacity wireless networks
… Quality of Service (QoS) requirements of mobile users. In this dissertation, several distributed, adaptive and efficient RA/CAC schemes are proposed and analyzed, in order to improve the system utilization while maintaining the required QoS. Since the most salient feature of the mobile wireless …
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Location updating and paging strategies in a cellular system
The problem of locating a mobile user in a cellular system is addressed. The mobility of a user is modelled by a two-dimensional directional random walk process. A location updating scheme based on overlapping location areas (LA's) is presented for keeping track of the LA a user is in. Two LA …
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Indeterminacy-aware prediction model for authentication in IoT.
… generate datasets, in which the location of the users is a main dataset attribute, with the aim to analyse the role of user mobility in the performance of the prediction models. Next, multiple classification algorithms were used with our datasets in order to build our best-fit prediction models. …
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Quality-Oriented Mobility Management for Multimedia Content Delivery to Mobile Users
… bandwidth, enable multimedia streaming to mobile users, maintaining a high user perceived quality is still a challenging task. The main factors which affect quality in multimedia streaming over wireless networks are mainly the error-prone nature of the wireless channels and the user mobility. …
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SpiderNet: A Quality -Aware Service Composition Middleware
… distribution to address the challenges of user mobility, device heterogeneity, and resource constraints in ubiquitous computing environments. We evaluate and validate the SpiderNet system both analytically and experimentally. We have conducted extensive experiments using both large-scale …
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Live migration of user environments across wide area networks
… challenge in mobile computing is to allow the user to migrate her highly customised environment while moving to a different location and to continue work without interruption. I motivate why this is a highly desirable capability and conduct a survey of the current approaches towards this goal …
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Access Disparity Modeling and Fairness Provisioning in Multi-Hop Wireless Networks
… multi-path reflection, attenuation, and user mobility. This problem intensifies further in multi-hop wireless networks where client traffic is forwarded via series of relay nodes over several tandem contention domains towards a destination.The Distributed Coordinated Function (DCF) of the …
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Representation learning on heterogeneous spatiotemporal networks
… learning, which learns from the complex user mobility pattern; (iii) distributed representation learning, which focuses on learning human mobility patterns by leveraging Natural Language Processing algorithms; and (iv) representation learning with node sense disambiguation, which learns …
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Biological and bio-inspired morphometry as a route to tunable and enhanced materials design
… shape of scales contributes to local, interscale mobility mechanisms that generate anisotropic, global mechanical behavior. With one prototype design scheme, a wide array of mechanical behavior is generated with stiffness ranging over several orders of magnitude, including 'mechanical …
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Spatio-Temporal Correlation in the Performance of Cache-Enabled Cellular Networks
… cells (small cell caching) or the memory of user devices (device caching) is seen as a good alternative to offload demand from macro base stations and reduce backhaul loads. After providing generic results for traditional cellular networks, we study two applications exploiting spatio-temporal …
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