NeTS: Small: Distributed Wireless Networking with An Enhanced Physical-Link Layer Interface

NeTS：小型：具有增强型物理链路层接口的分布式无线网络

• 批准号: 1618960
• 负责人: Jie Luo
• 金额: $ 39.86万
• 依托单位: Colorado State University
• 依托单位国家: 美国
• 项目类别: Standard 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=1618960&HistoricalAwards=false
• 关键词: NeTS; Small; Distributed; Wireless; Networking

The development of future wireless systems requires a network architecture that simultaneously addresses communication efficiency and system modularity. Due to the inefficiency of current network architectures, most existing networks adopt the structure of using wireless communication only at the last hop. The goal of this project is to develop an enhanced physical-link layer interface to solve the architectural inefficiency problem in wireless part of the special-structured networks, mainly for the distributed communication and networking model. By equipping a link layer user with multiple transmission options, the new interface enables advanced communication adaptation at the link layer that exploits wireless capabilities such as power, rate, and antenna adjustments. This project represents the first systematic investigation of distributed link layer networking that exploits multiple transmission options at each link layer user. The project will establish an important bridge toward the integration of information and network theories, and will serve as an example wireless architecture development that seeks to minimize its disturbance to the operation of wireline systems. Unification of information theory and network theory will also influence the way subjects are taught in Higher Education and attract more talented students to this field of acute national importance. The project is organized into four steps. In Step I, the focus is to investigate typical distributed networking scenarios with homogeneous users and saturated message queues. Based on a stochastic approximation model, a medium access control (MAC) framework will be developed to enable effective formulation of distributed channel sharing problems. Distributed algorithms will be developed to ensure asymptotic optimal or near optimal performance with respect to the maximization of particular network utility functions. In Step II, the focus is to extend the MAC framework to distributed networks that contain user groups with different priorities, as well as to distributed cognitive networks where secondary users are required not to disturb the communications of the primary users. In Step III, the focus is to develop fast adaptive MAC algorithms by incorporating the exponential backing-off approach into the MAC framework. In Step IV, the focus is to use computer simulations to investigate performance of the MAC algorithms in practical scenarios.

未来无线系统的发展需要一种同时解决通信效率和系统模块化问题的网络架构。由于现有网络架构效率低下，现有网络大多采用仅在最后一跳使用无线通信的结构。该项目的目标是开发增强型物理链路层接口，解决特殊结构网络无线部分的架构效率低下问题，主要针对分布式通信和组网模型。通过为链路层用户提供多种传输选项，新接口可在链路层实现高级通信自适应，从而利用功率、速率和天线调整等无线功能。该项目代表了对分布式链路层网络的首次系统研究，该网络在每个链路层用户处利用了多种传输选项。该项目将为信息和网络理论的整合建立一座重要的桥梁，并将作为无线架构开发的一个范例，力求最大限度地减少其对有线系统运行的干扰。信息论和网络理论的统一也将影响高等教育的学科教学方式，并吸引更多有才华的学生进入这个对国家具有重要意义的领域。该项目分为四个步骤。在第一步中，重点是研究具有同质用户和饱和消息队列的典型分布式网络场景。基于随机近似模型，将开发介质访问控制（MAC）框架，以有效地制定分布式信道共享问题。将开发分布式算法以确保在特定网络效用函数最大化方面的渐近最优或接近最优性能。第二步的重点是将MAC框架扩展到包含不同优先级的用户组的分布式网络，以及要求次要用户不干扰主要用户通信的分布式认知网络。第三步，重点是通过将指数退避方法纳入 MAC 框架来开发快速自适应 MAC 算法。在第四步中，重点是使用计算机模拟来研究 MAC 算法在实际场景中的性能。