EARS: Toward Harmonious Coexistence of Heterogeneous Wireless Services

可用于无线通信的无线电频谱是一种有限但极其宝贵的资源。随着新的无线应用的激增，无线电频谱的使用已经加剧，以至于迫切需要新的频谱共享机制和改进的频谱政策。在最近的NSF关于增强无线电频谱访问（ear）的研讨会报告中，概述了研究界为实现提高未来频谱使用效率的愿景而面临的几个重大挑战。其中一个重大挑战是异构无线技术的和谐共存，其目标是适应在同一无线电频段内运行的多种无线接入技术。提出的研究通过研究以下三个紧密耦合的研究领域来解决共存大挑战：(1)Wi-Fi和蜂窝在未授权频段上的共存；(2)雷达与蜂窝在雷达波段上共存；(3)新的软硬件共存试验台。拟议的研究活动将在多个方面催化更广泛的影响活动：(1)改善和影响政府未来的频谱政策；(2)技术向产业转化；(3)开发新的教材和软件工具，用于课堂教学；(4)吸引和吸引学生，特别是女性和代表性不足的学生参与频谱共享研究活动。拟议的研究通过解决无线电频段上两种最流行的无线服务（Wi-Fi和蜂窝）来解决共存大挑战。本文提出的Wi-Fi和蜂窝在免许可频段上共存的研究，通过将焦点转移到用户端并最大化用户总满意度，为解决两种技术之间的潜在冲突提供了一种新的途径。雷达和蜂窝在雷达波段上的共存研究探索了政府正在考虑共存的大部分未开发的雷达频谱。通过考虑与雷达系统相关的一些独特特性和挑战，所提出的架构远远超出了当前频谱接入服务器的概念。将开发新的软件和硬件试验台，为研究界提供急需的设施，以验证和试验共存的新方法。研究成果将与政府和监管机构共享，以帮助改进频谱政策，这对于使拟议的新共存技术在现实世界中产生影响至关重要。

The radio frequency spectrum that can be used for wireless communications is a finite but extremely valuable resource. With the proliferation of new wireless applications, the use of the radio spectrum has intensified to the point that there is a critical need of new spectrum-sharing mechanisms and improved spectrum policies. In the recent NSF workshop report on Enhancing Access to the Radio Spectrum (EARS), several Grand Challenges are outlined for the research community to realize the vision of enhancing the efficiency of future spectrum use. One of the Grand Challenges is harmonious co-existence of heterogeneous wireless technologies, with the goal of accommodating multiple wireless access technologies that would operate in the same radio spectrum band. The proposed research addresses the co-existence Grand Challenge by investigating the following three tightly-coupled research areas: (1) Coexistence between Wi-Fi and cellular on unlicensed bands; (2) Coexistence of radar and cellular on radar bands; and (3) New software and hardware testbeds for coexistence. The proposed research activities will catalyze broader impact activities in multiple dimensions: (1) improving and influencing future spectrum policies by the government; (2) transitioning technologies to industry; (3) developing new education materials and software tools to be used in classroom; and (4) attracting and engaging students, particularly female and under-represented students in spectrum-sharing research activities. The proposed research addresses the coexistence Grand Challenge by tackling two of the most popular wireless services (Wi-Fi and cellular) on radio spectrum bands. The proposed research on coexistence between Wi-Fi and cellular on unlicensed bands takes a new approach to resolve the potential conflict between the two technologies by shifting focus to the user side and maximizing total user satisfaction. The research on coexistence between radar and cellular on the radar bands explores the largely untapped radar spectrum that the government is considering for coexistence. The proposed architecture goes well beyond the current Spectrum Access Server concept by considering some unique characteristics and challenges associated with radar systems. New software and hardware testbeds will be developed to offer the much-needed facility for the research community for validation and experimentation of new approaches for coexistence. The outcomes of the research will be shared with government and regulatory agencies to help improve spectrum policies, which are crucial to enable the proposed new coexistence technologies to make impacts in the real world.