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This paper describes a conceptual framework to articulate clear rights of access to radio spectrum in a way that would foster an efficient market-based allocation of the resource. In this approach, regulators partition spectrum rights across the dimensions of space, time, frequency, and direction of propagation. They devolve each partition, called a licensed electrospace region (LER), to licensees who may buy, sell, aggregate, and subdivide their LERs at will. All signals outside an LER must have a power level of less than a regulated limit with de minimis exceptions. In addition, even within an LER, transmitter power or field strength must fall below a separate regulator-set level for the band. Licensees may deploy any devices and provide any services that do not violate these rules.  相似文献   
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