NeTS-ProWiN: Efficient Spectrum Reuse Without Harmful Interference to Existing Systems

当前无线系统的特点是静态频谱分配浪费、无线电功能固定以及移动设备之间的网络协调有限。 最近的研究表明，令人惊讶的是，很大一部分无线电频谱未被使用，但当今的无线系统无法利用这一巨大资源。 该项目包括对算法和数学模型的系统研究，以有效地重复使用频谱，而不会对现有无线系统造成有害干扰，也不需要与现有无线系统进行协调。 该方法基于使用频率捷变无线电，能够在程序控制下快速调谐到不同的频道。 主要研究目标是开发有效的频率捷变无线电算法，以发现和访问未使用的频谱空洞，而不会对现有系统造成有害干扰。 还需要分布式算法来优化分配“收获的”频谱和可用功率资源，以使无线电能够形成动态频率捷变网络。 该项目涉及在专门的分布式仿真平台上实施频谱重用和无线电资源分配协议并进行性能评估，该平台旨在准确考虑物理层特性并允许快速移植到原型无线电硬件。 该研究还希望能够更好地理解非合作无线环境中频率捷变网络的基本容量限制。该项目更广泛的目标是展示频率捷变网络的可行性和巨大潜力，并激发对创新频谱共享技术的进一步研究。

Current wireless systems are characterized by wasteful static spectrum allocation, fixed radio functions, and limited network coordination between mobile devices. Recent studies have shown that a surprisingly large portion of the radio spectrum goes unused, but today's wireless systems are not capable of tapping into this vast resource. The project consists of a systematic investigation of algorithms and mathematical models for efficiently reusing spectrum without causing harmful interference to and without requiring coordination with existing wireless systems. The approach is based on the use of frequency agile radios that are capable of rapidly tuning to different frequency channels under programmatic control. The main research objective is to develop efficient algorithms for frequency agile radios to discover and access unused spectrum holes without causing harmful interference to existing systems. Distributed algorithms are also needed for optimally allocating "harvested" spectrum and available power resources to enable the radios to form a dynamic frequency agile network. The project involves the implementation and performance evaluation of spectrum reuse and radio resource allocation protocols on a specialized distributed simulation platform designed to accurately take into account physical layer characteristics and to allow rapid porting to prototype radio hardware. The research also hopes to lead to a better understanding of the fundamental capacity limits of frequency agile networks in non-cooperative wireless environments.The broader aim of the project is to demonstrate the feasibility and enormous potential of frequency agile networks and to inspire further research into innovative spectrum sharing technologies.