Strategic Location Planning for Broadband Access Networks under Cooperative Transmission

Broadband Access Networks;Location Planning;Network Optimization;Cooperative Transmission;Electrical and Computer Engineering

Lin, Bin

University of Waterloo

关键词: Broadband Access Networks;    Location Planning;    Network Optimization;    Cooperative Transmission;    Electrical and Computer Engineering;   

Others  :  https://uwspace.uwaterloo.ca/bitstream/10012/4346/1/thesis_overall_BIN_2009.pdf

瑞士|英语

来源: UWSPACE Waterloo Institutional Repository

【 摘 要 】

To achieve a cost-effective network deployment, employing state-of-art technical advances provides a practical and effectiveway to enhance system performance and quality of service provisioning. Cooperative transmission has been recognized as one ofthe most effective paradigms to achieve higher system performance in terms of lower bit-error rate, higher throughput, larger coverage, more efficient energy utilization, and higher network reliability. This dissertation studies the location planning for the deployment of broadband access networks and explores the great potential ofcooperative transmission in the context of single-cell cooperative relaying and multi-cell cooperative transmission, respectively. The placement problem is investigated in two categories of network deployment environment, i.e., an existing wireless access network and a perspective broadband access network, respectively. In an existing wireless access network, to solve some practical problems such as the requirements of capacity enhancement andcoverage extension, relay stations (RSs) are introduced in the network architecture. We propose two optimization frameworks withthe design objectives of maximizing cell capacity and minimizing number of RSs for deployment, respectively. Mathematicalformulations are provided to precisely capture the characteristics of the placement problems. The corresponding solution algorithms are developed to obtain the optimal (or near-optimal) results inpolynomial time. Numerical analysis and case studies are conducted to validate the performance benefits due to RS placement and the computation efficiency of the proposed algorithms. To deploy a new metropolitan-area broadband access network, we explore the integration of passive optical network (PON) and wireless cooperative networks (WCN) under the multi-cell cooperative transmission technology. An optimization framework is provided to solve the problem of dimensioning and site planning. The issues ofnode placement, BS-user association, wireless bandwidth and power breakdown assignment are jointly considered in a single stage to achieve better performance. We also propose a solution to the complex optimization problem based on decomposition and linear approximation. Numerical analysis and case studies are conducted to verify the proposed framework. The resultsdemonstrate the performance gains and economic benefits.Given a set of network parameters, the proposed optimization frameworks and solutions proposed in this dissertation can provide design guidelines for practical network deployment and cost estimations. And the constructed broadband access networks show a more cost-effective deployment by taking advantage of the cooperative transmission technology.