NeTS: Medium: Collaborative Research: Coexistence of Heterogeneous Wireless Access Technologies in the 5 GHz Bands

NeTS：媒介：协作研究：5 GHz 频段异构无线接入技术的共存

• 批准号: 1564128
• 负责人: Jie Wu
• 金额: $ 40万
• 依托单位: Temple University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2016
• 资助国家: 美国
• 起止时间: 2016-08-01 至 2021-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1564128&HistoricalAwards=false
• 关键词: NeTS; Medium; Collaborative; Research; Coexistence

As billions of wireless devices (such as smartphones and tablets) are introduced into the market each year, wireless spectrum becomes a scarce resource. This project aims to address this important problem by developing novel technologies that enable efficient utilization of wireless spectrum. Due to the proliferation of Wi-Fi, the unlicensed spectrum in the 2.4 GHz wireless band has been saturated with wireless traffic. Hence, there has been a lot of interest from the Wi-Fi industry and the cellular stakeholders (such as Qualcomm) to use the 5 GHz wireless bands. In this project, the PIs will develop innovative technologies that will enable harmonious spectrum sharing among different wireless technologies in the 5 GHz bands. The example wireless technologies include Wi-Fi, Unlicensed LTE (LTE-U), and Dedicated Short-Range Communications (DSRC). DSRC is a short-range to medium-range wireless communication technology designed for automotive use. The outcome of this project will allow much more efficient utilization of wireless spectrum, which means supporting more new wireless applications and services, faster speed and better quality. The proposed work is expected to have significant impacts on today's and future wireless technologies. The project findings are expected to include fundamental contributions that would provide insights into other wireless research. Through industry and government outreach activities, the project team will ensure that the project findings have maximum impacts on ongoing industry research/development efforts as well as on Government initiatives to open up more spectrum for spectrum sharing. The project outcomes will be incorporated into undergraduate and graduate courses currently offered at the three institutions. The proposed work provides excellent hands-on exercises, research, and educational opportunities for undergraduate and graduate students at the three collaborating institutions. Enabling harmonious spectrum sharing between heterogeneous wireless technologies is a challenging problem, but one that needs to be urgently addressed in order to quell the exploding demand for more spectrum by existing as well as burgeoning wireless applications. The importance of this problem is especially acute for the 5 GHz bands because these bands have emerged as the most coveted bands for launching new wireless applications and services. Access to spectrum in the 5 GHz bands has emerged as a major bone of contention between the LTE-U, Wi-Fi, and Dedicated Short-Range Communications (DSRC) stakeholders. More importantly, the 5 GHz bands have become a proving ground for demonstrating the viability of spectrum sharing between three heterogeneous technologies-viz., LTE-U, Wi-Fi (802.11ac/802.11ax), and DSRC. Recognizing the importance of this problem, the project team proposes to embark on an in-depth study that focuses on two particular coexistence scenarios: (1) coexistence between LTE-U and Wi-Fi and (2) coexistence between DSRC and Wi-Fi. The proposed work on the coexistence of Wi-Fi and LTE-U is expected to have tangible impacts on today's technologies as well as those of the future. The PIs will study avant-garde approaches that exploit the advanced functionalities envisioned in future technologies, such as 802.11ax, as well as backward-compatible techniques that can be applied to today's technologies (e.g., LTE-U, 802.11ac). The proposed work on DSRC-Wi-Fi coexistence will be one of the first systematic studies that investigate incumbent protection techniques designed for highly mobile incumbent users that are very sensitive to communication latency.

每年将数十亿个无线设备（例如智能手机和平板电脑）引入市场时，无线频谱成为稀缺的资源。该项目旨在通过开发可有效利用无线频谱的新技术来解决这一重要问题。由于Wi-Fi的扩散，2.4 GHz无线频段中未经许可的光谱已被无线流量饱和。因此，Wi-Fi行业和蜂窝利益相关者（例如Qualcomm）使用5 GHz无线频段引起了很多兴趣。在这个项目中，PI将开发创新的技术，这些技术将在5 GHz频段中的不同无线技术之间产生和谐频谱共享。该示例无线技术包括Wi-Fi，无执照的LTE（LTE-U）和专用的短距离通信（DSRC）。 DSRC是一种旨在汽车使用的中等范围至中范围的无线通信技术。该项目的结果将允许更有效地利用无线频谱，这意味着支持更多新的无线应用程序和服务，更快的速度和更好的质量。预计拟议的工作将对当今和未来的无线技术产生重大影响。预计该项目的发现将包括基本贡献，这些贡献将为其他无线研究提供见解。通过行业和政府的外展活动，项目团队将确保项目发现对正在进行的行业研究/发展工作以及政府倡议的最大影响，以开放更多的频谱共享频谱。该项目成果将纳入目前在三个机构提供的本科和研究生课程中。拟议的工作为三个合作机构的本科生和研究生提供了出色的动手练习，研究和教育机会。在异质无线技术之间实现和谐的频谱共享是一个具有挑战性的问题，但是需要紧急解决的问题，以平息现有的无线应用程序以及迅速的无线应用程序对更多频谱的爆炸需求。对于5 GHz频段而言，此问题的重要性尤其严重，因为这些频段已成为推出新的无线应用程序和服务的最令人垂涎​​的频段。 在5 GHz频段中获得频谱的访问已成为LTE-U，Wi-Fi和专用的短期通信（DSRC）利益相关者之间的主要争论。 更重要的是，5 GHz频段已成为证明频谱共享的生存能力的探索，即在三个异质技术之间共享的可行性。 认识到这个问题的重要性，该项目团队提议进行一项深入的研究，重点是两个特定的共存方案：（1）LTE-U和Wi-Fi之间的共存以及（2）DSRC与Wi-Fi之间的共存。 关于Wi-Fi和LTE-U共存的拟议工作预计将对当今的技术以及未来的技术产生切实的影响。 PI将研究前卫方法，以利用未来技术（例如802.11ax）中设想的先进功能，以及可以应用于当今技术（例如LTE-U，802.11AC）的向后兼容技术。 关于DSRC-WI-FI共存的拟议工作将是研究为高度移动的现有用户设计的现有保护技术的最早的系统研究之一，这些技术对通信延迟非常敏感。