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 101 for “"Access network"”.
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FIBRE-OPTIC, MULTI-ACCESS NETWORK FOR INTRACAR AND MANUFACTURING ENVIRONMENTS
The Controller Area Network (CAN) is a CSMA-CD protocol with priority access and was designed for Intra Car Communication. The purpose of this network is to connect the various functions within a vehicle and allow communication between them using only one serial data line instead of conventional …
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SOA enhanced optical line terminal for future optical access network
Future passive optical networks (PONs) aim to deliver data rates of 100 Gb/s per wavelength using intensity-modulation direct detection (IM/DD) and up to 400 Gb/s per wavelength using coherent technology. Achieving these targets requires overcoming the large dynamic range of burst-mode upstream …
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Capacity improvements for a direct-sequence code division multiple access network
… of a Direct-Sequence Code-Division-Multiple-Access (DS-CDMA) mobile telephone network. The capacity of both Private Mobile Radio (PMR) and cellular networks are derived and the many techniques which are currently available are reviewed. Areas which may be further investigated are identified. …
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Efficient access network selection and data demand prediction for 5G systems
… demand, fifth generation (5G) of wireless network is on the verge of deployment. This new generation of the wireless networks would pose different challenges for both subscribers and service providers, and the challenges need to be carefully addressed. Due to the diverse nature of the …
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Dynamic Spectrum Access Network Simulation and Classification of Secondary User Properties
… about secondary users in a Dynamic Spectrum Access (DSA) network using a low complexity channel sensing method. With a growing number of users generating an increased demand for broadband access, determining an efficient method for utilizing the limited available broadband is a developing …
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Access network selection schemes for multiple calls in next generation wireless networks
… services by mobile subscribers over the wireless access networks, with limited radio resources and capacity constraints. A viable solution to this capacity crunch is the deployment of heterogeneous networks. However, in this wireless environment, the choice of the most appropriate Radio Access …
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ROLAND : a tool for the realistic optimisation of local access network design
Investment in the local access network represents between 50% and 70% of capital investment of a telecommunications company. This thesis investigates algorithms that can be used to design economical access networks and presents ROLAND: a tool that incorporates several of these algorithms into an …
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Performance evaluation of AAL2 over IP in the UMTS access network Iub interface
In this study, we proposed to retain AAL2 and lay it over IP (AAL2IIP). The IP-based lub interface is therefore designed to tunnel AAL2 channels from the Node B to the RNC. Currently IP routes packets based on best-effort which does not guarantee QoS, To provide QoS, MPLS integrated with DiffServ …
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Improving energy efficiency and quality of service in an integrated wireless-optical broadband access network
… forcing telecommunication industries to rethink network design, and focus on developing high capacity mobile broadband networks. Accordingly, researchers have undertaken developmental work for an integrated wireless-optical broadband access network (WOBAN). Passive optical networks (PONs) and …
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Physician and Patient Satisfaction With Charity Care: The Case of Health Access Network in Utah
… to study patient and physician perspectives on accessing health care in the United States within the context of charity care. This thesis examines physicians’ and patients’ experiences with charity care through the non-profit organization Health Access Network, which manages a volunteer provider …
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On the Optimization of Edge Server Scaling and Placement for Open Radio Access Network (O-RAN) Slicing
Managing edge server resources for O-RAN slicing can be viewed from two complementary perspectives: service providers, who aim to satisfy use-case requirements with minimal leased computing resources, and infrastructure providers, who seek to deploy the minimum number of edge servers across …
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Detection of Denial of Service Attacks on the Open Radio Access Network Intelligent Controller through the E2 Interface
Open Radio Access Networks (Open RANs) enable flexible cellular network deployments by adopting open-source software and white-box hardware to build reference architectures customizable to innovative target use cases. The Open Radio Access Network (O-RAN) Alliance defines specifications introducing …
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Learning and Reconstructing Conflicts in O-RAN
The Open Radio Access Network (O-RAN) architecture enables the deployment of third-party applications on the RAN Intelligent Controllers (RICs). However, the operation of third-party applications in the Near Real-Time RAN Intelligent Controller (Near-RT RIC), known as xApps, may result in …
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Network-based IP flow mobility support in 3GPPs evolved packet core
Mobile data traffic in cellular networks has increased tremendously in the last few years. Due to the costs associated with licensed spectrum, Mobile Network Operators (MNOs) are battling to manage these increased traffic growths. Offloading mobile data traffic to alternative low cost access …
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Enabling Experimentation and Evaluation of xApp Direct Conflict Detection and Mitigation in Testbed
Telecommunications networks have evolved from enabling human-focused communication to supporting machine-driven interactions such as Internet of Things (IoT) communication. This shift demands increasingly intelligent and adaptive infrastructures, most notably through the virtualization of the Radio …
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Distributed control of reconfigurable mobile network agents for resource coordination
… tremendous growth of internet applications and network resource federation proposed towards future open access network (FOAN), the need to analyze the robustness of the classical signalling mechanisms across multiple network operators cannot be over-emphasized. It is envisaged, there will be …
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A QoS enabling queuing scheme for Fourth Generation wireless access networks
… proposes a scheme to accomplish the task of network selection; this is achieved by enhancing existing QoS provisioning approaches. The scheme models the radio access network as a network of queuing nodes. With the model, the link layer QoS statistics of user traffic in each available path …
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Mobility, AAA, security, privacy : a unified architecture to enable real-world host and network mobility
Supporting the requirements of mobile networking is a very exciting and challenging task that has the potential to positively influence people's every day communication and Internet experience. The exponential increase in the number of commuters requiring Internet connectivity and a variety of …
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Large-scale integration of graphene optoelectronic devices in photonic integrated circuits
… the back-end of CMOS ICs for photonic links in access network and computing applications. We describe a simple fabrication process which can accommodate both graphene modulators and photodetectors on almost any waveguide platform. We use this process to fabricate such devices on silicon …
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Efficient radio resource management in next generation wireless networks
… growth in mobile wireless communication networks and subscribers. In 2015, mobile wireless devices and connections were reported to have grown to about 7.9 billion, exceeding human population. The explosive growth in mobile wireless communication network subscribers has created a huge …
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