NeTS: Small: Collaborative Research: Unleashing Spectrum Effectively and Willingly: Optimization and Incentives

NeTS：小型：协作研究：有效且自愿地释放频谱：优化和激励

• 批准号: 1421685
• 负责人: Guoliang Xue
• 金额: $ 25.2万
• 依托单位: Arizona State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2014
• 资助国家: 美国
• 起止时间: 2014-09-01 至 2018-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1421685&HistoricalAwards=false
• 关键词: NeTS; Small; Collaborative; Research; Unleashing

An intriguing fact emerges during the study of spectrum usage. On one hand, the proliferation of wireless devices, e.g. smartphones, laptops, and tablets, and bandwidth-hungry applications has resulted in the problem of spectrum scarcity. On the other hand, a recent report by FCC reveals that the licensed users are extremely underutilizing the allocated spectrum. To remove the barriers to efficient spectrum utilization, this project aims to 1) design effective spectrum allocation algorithms to allow as many secondary users (SUs) to coexist with the primary user (PU) as possible while taking into account the interference generated by both SUs and PU; and 2) develop incentive mechanisms for enticing spectrum licensees to share or license their under-utilized spectrum for better utilization. While designing spectrum allocation schemes, the physical interference model is adopted to characterize the interference closely to reality. Joint optimization of spectrum allocation and power control is explored to further improve the spectrum utilization. This can lead to efficient approximation algorithms with guaranteed performance comparing with the optimum, as well as effective heuristic algorithms. Another major task of this project is to design incentive auctions for enticing spectrum licensees to share their spectrum with unlicensed users in exchange for the proceeds from the auction. Three different application scenarios are investigated: 1) the spectrum holder is willing to coexist with the unlicensed users under the condition that the cumulative interference caused by them does not interrupt its own transmission; 2) small network operators are allowed to form groups for collective buying power to increase their chances of winning the spectrum; and 3) the competition among multiple spectrum licensees is considered. This research can help ensure wireless networks in the USA keep pace with the continuously increasing demand for spectrum, so that they can support activities that increasingly rely on them, including public safety and health-care. The designed group-buying based incentive auctions can provide opportunities for small businesses to compete against big brand companies and win the access to desired spectrum that is essential to the success of their business. These small businesses are the engines of job creation and economic growth for the country. This project involves under-represented and minority students, as well as K-12 students to inspire their interests in science and engineering.

在研究频谱使用过程中，出现了一个有趣的事实。一方面，无线设备的扩散，例如智能手机，笔记本电脑和平板电脑以及悬而未决的应用程序导致了频谱短缺的问题。另一方面，FCC最近的一份报告表明，有执照的用户将分配的频谱极为不足。为了消除有效频谱利用的障碍，该项目的目的是1）设计有效的频谱分配算法，以使尽可能多的二级用户（SUS）与主要用户（PU）共存，同时考虑了SUS和PU产生的干扰； 2）开发激励机制，以诱使频谱被许可人共享或许可其利用不足的光谱以更好地利用。在设计频谱分配方案时，采用了物理干扰模型来将干扰与现实紧密表征。探索了频谱分配和功率控制的关节优化，以进一步改善光谱利用率。这可以导致有效的近似算法，并保证性能与最佳和有效的启发式算法进行比较。该项目的另一个主要任务是设计激励拍卖，以诱使光谱许可人与无执照的用户共享频谱，以换取拍卖收益。研究了三种不同的应用程序方案：1）频谱持有人愿意与未经许可的用户共存，条件是由他们引起的累积干扰不会中断其自身的传输； 2）允许小型网络运营商组成集体的集体购买力，以增加赢得频谱的机会； 3）考虑了多个频谱持有人之间的竞争。这项研究可以帮助确保美国的无线网络与对频谱的不断增长的需求保持同步，以便他们可以支持越来越多地依赖它们的活动，包括公共安全和医疗保健。设计的基于团体购买的奖励拍卖可以为小型企业提供与大型品牌公司竞争并赢得对他们业务成功至关重要的所需频谱的机会。这些小型企业是该国创造就业和经济增长的引擎。该项目涉及代表性不足和少数族裔学生以及K-12学生，以激发他们对科学和工程学的兴趣。