CIF: Small: Massive Uncoordinated and Sporadic Multiple Access -- Strengthening Connections between Coding and Random Access

由于机器驱动通信的出现，无线格局将在未来几年内再次发生变化。这给无线流量带来了新的挑战，数据包来自零星传输，而不是持续连接。当前部署的调度策略不足以处理此类流量，因为它们依赖于收集有关每个活动设备的信道质量和队列长度的信息。这项研究计划的目标是解决这一不足，并设计新的接入方案，以适应大规模的非协调和零星的多址接入，从而为未来的流量准备好无线基础设施。这一研究计划的更广泛影响包括为不断发展的无线环境带来的一些挑战提供务实的解决方案，加强无线基础设施，并为培训具有全球竞争力的科学、技术、工程和数学劳动力做出贡献。这些研究任务与社会对信息技术的需求相适应，信息技术是我国重要的经济驱动力。这一研究成果的广泛传播将增进对无线系统、接入策略和迭代方法的科学理解。这一研究倡议的智力价值在于利用消息传递解码和串口干扰消除之间的密切联系来创建新的接入策略。将迭代方法的进展与非协调的随机访问联系起来，体现了可能导致颠覆性技术和范式转变的横切研究类型。该项目采用了一种不断发展的观点，即利用无线网络中的干扰，而不是对抗或避免干扰。这一观点是网络编码和分布式存储领域近期许多成功的基础。该项目在大规模无线网络的设计中提出了这样的观点。

The wireless landscape is poised to change, once again, within the next few years due to the emergence of machine-driven communications. This creates new challenges for wireless traffic, with packets originating from sporadic transmissions rather than sustained connections. Currently deployed scheduling policies are ill-equipped to deal with such traffic because they rely on gathering information about channel quality and queue length for every active device. The goal of this research initiative is to address this deficiency and devise novel access schemes tailored to massive uncoordinated and sporadic multiple access, thereby readying wireless infrastructures for the traffic of tomorrow. The broader impacts of this research program include providing pragmatic solutions to some of the challenges posed by an evolving wireless landscape, strengthening wireless infrastructures, and contributing to the training of a globally competitive Science, Technology, Engineering and Math workforce. The research tasks are attuned to societal needs in information technologies, an important economic driver for our nation. The wide dissemination of the findings will enhance the scientific understanding of wireless systems, access strategies, and iterative methods.The intellectual merit of this research initiative lies in exploiting the close connections between message-passing decoding and serial interference cancellation to create new access strategies. Linking advances in iterative methods to uncoordinated random access embodies the type of crosscutting research that can lead to disruptive technologies and paradigm shifts. This project embraces the evolving perspective of harnessing interference in wireless networks rather than fighting it or avoiding it. This viewpoint underlies many recent successes in network coding and distributed storage. This project brings forth such a perspective in the design of large-scale wireless networks.