Spectrum Sharing in Dynamic Spectrum Access Networks: WPE-II Written Report
Spectrum Sharing in Dynamic Spectrum Access Networks: WPE-II Written Report
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发表时间：
2009
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通讯作者：
Changbin Liu
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作者：
Changbin Liu
联邦通信委员会的一项研究表明，当前无线网络中的大部分频谱在大部分时间都未被使用，而有些频谱则被大量使用。最近，已经提出了动态频谱接入（DSA），以通过允许用户机会性地接入未使用的频谱来解决该频谱低效问题。DSA中的一个重要问题是如何在用户之间有效地共享频谱，从而可以增加频谱利用率并可以减少无线干扰。频谱共享可以形式化为图着色问题。在这份报告中，我们专注于调查频谱共享技术在DSA网络，并提出了四个代表性的技术在不同的分类领域，包括集中式，分布式有/无公共控制信道，和一个真实的案例研究DSA网络-DARPA新一代（XG）无线电。它们的优点和局限性进行了详细的评估和比较。最后，我们讨论了当前频谱共享研究的挑战和未来可能的发展方向。评论宾夕法尼亚大学计算机与信息科学系技术报告编号MSCIS-09-11。本技术报告可在ScholarlyCommons上获得：http://repository.upenn.edu/cis_reports/907动态频谱接入网络中的频谱共享WPE-II书面报告
A study by Federal Communication Commission shows that most of the spectrum in current wireless networks is unused most of the time, while some spectrum is heavily used. Recently dynamic spectrum access (DSA) has been proposed to solve this spectrum inefficiency problem, by allowing users to opportunistically access to unused spectrum. One important question in DSA is how to efficiently share spectrum among users so that spectrum utilization can be increased and wireless interference can be reduced. Spectrum sharing can be formalized as a graph coloring problem. In this report we focus on surveying spectrum sharing techniques in DSA networks and present four representative techniques in different taxonomy domains, including centralized, distributed with/without common control channel, and a real case study of DSA networks --DARPA neXt Generation (XG) radios. Their strengths and limitations are evaluated and compared in detail. Finally, we discuss the challenges in current spectrum sharing research and possible future directions. Comments University of Pennsylvania Department of Computer and Information Science Technical Report No. MSCIS-09-11. This technical report is available at ScholarlyCommons: http://repository.upenn.edu/cis_reports/907 Spectrum Sharing In Dynamic Spectrum Access Networks WPE-II Written Report