THESIS
2014
xiv, 141 pages : illustrations ; 30 cm
Abstract
With the transition from analog to digital television broadcasts, a substantial number of TV
channels becomes available for unlicensed access, which brings great opportunities but also introduces
new challenges. In this thesis, we identify four key challenges in the wireless networking
research in TV white spaces. We address these challenges from two aspects, i.e., system design and
economic modeling. By designing and implementing new system architectures,we demonstrate the
feasibility and efficiency of TV spectrum access. By proposing and verifying new business models,
we show the incentives of the usage of the new wireless communication paradigm.
We have three proposals in the direction of system design. First, we propose a database-based
architecture which is compatible with...[
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With the transition from analog to digital television broadcasts, a substantial number of TV
channels becomes available for unlicensed access, which brings great opportunities but also introduces
new challenges. In this thesis, we identify four key challenges in the wireless networking
research in TV white spaces. We address these challenges from two aspects, i.e., system design and
economic modeling. By designing and implementing new system architectures,we demonstrate the
feasibility and efficiency of TV spectrum access. By proposing and verifying new business models,
we show the incentives of the usage of the new wireless communication paradigm.
We have three proposals in the direction of system design. First, we propose a database-based
architecture which is compatible with the regulation on the TV database access with a proof-of-concept
implementation. Second, we propose an enhancement to the current wireless medium
access control (MAC) protocol leveraging the frequency diversity. Third, we consider the co-existence
of systems operating under heterogeneous standards in TV white spaces and propose a
busytone-based approach. On the economic modeling aspects, we study three problems. First,
we consider the procedure of TV channel redistribution and model it as a double auction. We
propose a truthful auction mechanism considering heterogeneous propagation properties of the TV
spectrum. Second, we consider a hybrid pricing model for the spectrum redistribution problem
and propose a framework consisting of both long-term and short-term pricing durations. Third,
we study the pricing problem for TV white space database operators and propose a novel scheme
for the operators to manage their costs and make profits. The above studies demonstrate that with
appropriate system designs and business models, benefits of TV white spaces can be fully exploited.
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