本标准对频谱管理、频谱交易、认知无线电、动态频谱接入、基于策略的无线电系统、软件定义无线电以及相关先进无线电系统技术等领域的关键概念进行了定义和解释。该文件超越了简单、简短的定义，提供了在使用这些术语的技术背景下解释这些术语的放大文本。该文件还描述了这些技术如何相互关联并创建新功能，同时提供支持新频谱管理模式的机制。 IEEE Std 1900.1？2008的本次修订增加了其他定义，修改了现有定义，并删除了过时的定义； 它更新了辅助文本和资料性附录，以反映先进无线电系统的新概念和发展；介绍描述定义和概念之间关系的术语分类法，并更新文档结构以对齐修订的定义、概念以及术语和定义之间的关系。

This standard provides definitions and explanations of key concepts in the fields of spectrum management, spectrum trading, cognitive radio, dynamic spectrum access, policy-based radio systems, software-defined radio, and related advanced radio system technologies. The document goes beyond simple, short definitions by providing amplifying text that explains these terms in the context of the technologies that use them. The document also describes how these technologies interrelate and create new capabilities while at the same time providing mechanisms supportive of new spectrum management paradigms. This revision to IEEE Std 1900.1-2008 adds additional definitions, modifies existing definitions, and removes outdated definitions; it updates the auxiliary text and informative annexes to reflect new concepts and developments in advanced radio systems; introduces a taxonomy of terms which depicts relationships between definitions and concepts, and updates the document structure to align revised definitions, concepts, and relationships between terms and definitions.