Wireless Networking in TV White Spaces: System Designs and Economic Models
详细信息
- 作者：Feng ; Xiaojun
- 学历：Doctor
- 年：2014
- 关键词：Applied sciences ; Wireless networking ; Tv white spac
- 导师：Zhang,Qian
- 毕业院校：Hong Kong University of Science and Technology
- Department：hkust
- 专业：Computer science
- ISBN：9781321603828
- CBH：3684899
- Country：China
- 语种：English
- FileSize：3722880
- Pages：156
文摘
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 coexistence of systems operating under heterogeneous standards in TV white spaces and propose a busy tone-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.