ITR: The 3 R's of Spectrum Management: Reduce, Reuse and Recycle

许多创新的最新无线设备依赖于未经许可的频谱，受到其对新用途和用户的开放性的刺激。与此同时，大量的频谱仍然被独家授权给需求稀少的服务和使用过时技术的标准。目前我们共享有限的非授权频谱的方式也远非完美：即使没有干扰问题，设备也会受到非常有限的范围，并且当它们的本地频谱被来自异构系统的用户共享时，性能会严重下降。我们通过传统的3R资源使用的透镜来看待频谱管理：用途：减少，重用和回收。虽然Reduce受到了工程界最多的关注，但回收和再利用的研究还处于更原始的状态。但后两个领域的进展对于整个频谱的开放和有效共享至关重要。频谱回收是指促进共享和提高整体频谱效率，同时保持与模拟广播和蜂窝标准等传统系统用户的向后兼容性。 频谱复用是指多个无线系统的协作共存，使用有限的交互来公平有效地共享频谱。建议的研究需要一个广泛的，系统的和跨学科的方法，这两个问题领域的基本面，从物理层无线通信，多用户信息理论和分布式编码，资源分配和博弈论分析相结合的想法。

Many of the innovative recent wireless devices rely on the unlicensed spectrum, spurred by its openness to new uses and users. At the same time, vast amounts of spectrum are still exclusively licensed to services with sparse demand and to standards that use antiquated technologies. The current way of sharing thelimited unlicensed spectrum that we do have is also far from perfect: devices suffer from very limited range even when there are no interference problems, and severe performance degradation when their local spectrum is shared by users from heterogeneous systems.We look at spectrum management through the lens of the traditional 3 R's of resource use: Reduce, Reuse and Recycle. While Reduce has received by far the most attention from the engineering community, research in Recycle and Reuse is at a much more primitive state. But it is progress in the latter two areas that will be critical for the open and efficient sharing of the spectrum as a whole. Spectrum Recycling refers to fostering sharing and improving overall spectral efficiency while maintaining backward-compatibility with users oflegacy systems like analog broadcast and cellular standards. Spectrum Reuse refers to the collaborative coexistence of multiple wireless systems, using limited interaction to share the spectrum fairly andefficiently. The proposed research takes a broad, systematic and inter-disciplinary approach to the fundamentals of these two problem areas, combining ideas from physical layer wireless communications,multiuser information theory and distributed coding, resource allocation and game theoretic analysis.