<p>The successful deployment of Universal Mobile Telecommunication System (UMTS) is heavily dependent on Quality of Service (QoS) to be achieved. This thesis addresses a few facets of the QoS issues in UMTS, including traffic shaping and policing, conformance consistency, Call Admission Control (CAC) and resource allocation.</p><p>The main focus of this thesis is traffic conditioning related issues for QoS provisioning in UMTS. Assuming an end-to-end QoS scenario supported by IntServ or/and Diffserv architectures, the thesis initially presents an all nodes traffic conditioning-enabled framework in UMTS. Under this framework, the traffic generated at each User Equipment (UE) is regulated by a traffic shaper in the form of a token bucket, and the conformance of the traffic flow is policed at the policing node. The performance of imposing traffic shaping at the UE is studied and compared with the case without shaping. Next, having observed that the performance of the traffic conditioned system is sensitive to the values of the token bucket parameters, the thesis proposes a heuristic approach for searching local and global QoS-aware token bucket parameters. By tuning the system operating at the obtained ’optimal’ shaping parameters, the requirements for all concerned QoS attributes are guaranteed. Furthermore, the thesis studies conformance consistency in a traffic conditioned multi-hop network, by monitoring the conformance status of a traffic flow using an identical token bucket for both traffic shaping and policing. In the presence of variable packet size, the thesis gives a quantitative result, for a simple case, on how much percent of the originally conformant packets may misbehave at further policing node(s). The performance of the aggregated traffic flows and the measures to minimize the effect of conformance deterioration are also studied in the thesis.</p><p>Another facet of the QoS issues in UMTS, CAC together with resource allocation, is also studied in the thesis. A priority-oriented framework for QoS management of multimedia services in UMTS is proposed. Based on a traffic class priority definition, the framework is implemented through a priority-oriented CAC, channel congestion control and adaptive bandwidth allocation.</p>

The successful deployment of Universal Mobile Telecommunication System (UMTS) is heavily dependent on Quality of Service (QoS) to be achieved. This thesis addresses a few facets of the QoS issues in UMTS, including traffic shaping and policing, conformance consistency, Call Admission Control (CAC) and resource allocation. The main focus of this thesis is traffic conditioning related issues for QoS provisioning in UMTS. Assuming an end-to-end QoS scenario supported by IntServ or/and Diffserv architectures, the thesis initially presents an all nodes traffic conditioning-enabled framework in UMTS. Under this framework, the traffic generated at each User Equipment (UE) is regulated by a traffic shaper in the form of a token bucket, and the conformance of the traffic flow is policed at the policing node. The performance of imposing traffic shaping at the UE is studied and compared with the case without shaping. Next, having observed that the performance of the traffic conditioned system is sensitive to the values of the token bucket parameters, the thesis proposes a heuristic approach for searching local and global QoS-aware token bucket parameters. By tuning the system operating at the obtained ’optimal’ shaping parameters, the requirements for all concerned QoS attributes are guaranteed. Furthermore, the thesis studies conformance consistency in a traffic conditioned multi-hop network, by monitoring the conformance status of a traffic flow using an identical token bucket for both traffic shaping and policing. In the presence of variable packet size, the thesis gives a quantitative result, for a simple case, on how much percent of the originally conformant packets may misbehave at further policing node(s). The performance of the aggregated traffic flows and the measures to minimize the effect of conformance deterioration are also studied in the thesis. Another facet of the QoS issues in UMTS, CAC together with resource allocation, is also studied in the thesis. A priority-oriented framework for QoS management of multimedia services in UMTS is proposed. Based on a traffic class priority definition, the framework is implemented through a priority-oriented CAC, channel congestion control and adaptive bandwidth allocation.

Thesis (M.S.)--Mississippi State University. Department of Electrical and Computer Engineering. / Title from title screen. Includes bibliographical references.

Thesis--Ph. D., University of Hong Kong. / Also availalbe in microfilm.

No description available.

The decline of regional communities in Australian as in the rest of the world has motivated both research and political enquiry into methods of arresting it. A popular and persuasive philosophy is New Regionalism which envisions regions as potential economic powerhouses given a degree of self governance and the necessary resources. In a world where efficient telecommunications is a prerequisite to participation in the global economy a modern and effective telecommunications system is a crucial resource. Australia has adopted a position of partial privatisation of the telecommunications industry which poses questions of updating telecommunications in regions where the density of population does not justify commercial operations. In 1997 the Australian Federal Government devoted in excess of $A460 million to a grant award scheme called the Regional Telecommunication Infrastructure Fund (RTIF) or Networking the Nation (NTN) in which communities identified local telecommunication problems and applied for funds to correct them. / No formal analysis has been conducted of this scheme until recently and no evaluation has been undertaken to assess the 'fit' or alignment of Federal Government policy and community goals. The primary purpose of this thesis is to develop and test a conceptual framework designed to assess the effectiveness of the mechanism of this and similar schemes. Indeed the motivation for this research is the lack of a suitable framework. The conceptual framework which we have designed for this purpose is informed by Strategic Information Systems Planning (SISP) which has competitive advantage through the use of Information Technology (IT) as its basic premise. From the community perspective, community 'thrivingness' is the equivalent of competitive advantage and our objective is to investigate its feasibility in this novel context. / The conceptual framework was first tested on King Island which had gained an NTN grant to update its telecommunications system. Thereafter we conducted three case studies in Ballarat, Shepparton and Tasmania. Each of these was viewed through the lens afforded by the SISP based conceptual framework and a cross case analysis compared and contrasted the shifting status of alignment between Federal Government and community before and during the NTN projects. We conclude that the perceptions of large grant award schemes are assisted by a suitable framework or lens and that the set of SISP principles that comprise the conceptual framework, is useful in community preparation in applying for awards and in managing the projects when the award is made. / Thesis (PhD)--University of South Australia, 2006.

Thesis (Ph.D.)--York University, 2006. Graduate Programme in Political Science. / Typescript. Includes bibliographical references (leaves 394-434). Also available on the Internet. MODE OF ACCESS via web browser by entering the following URL: http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pqdiss&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&rft_dat=xri:pqdiss:NR19827

Thesis (M.S.)--Air Force Institute of Technology, 2007. / AFIT/GOR/ENS/07-10. Title from title page of PDF document (viewed on: Nov. 29, 2007). "March 2007." Includes bibliographical references (leaf 105).

Thesis (M.B.A.)--University of Hong Kong, 1995. / Includes bibliographical references.

Thesis (Ph. D.)--University of Texas at Austin, 2008. / Vita. Includes bibliographical references.