NEDG: Cooperative Wireless Networks: From Theory to Urban-Scale Trials

NEDG：协作无线网络：从理论到城市规模试验

• 批准号: 0832025
• 负责人: Behnaam Aazhang
• 金额: $ 30万
• 依托单位: William Marsh Rice University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2008
• 资助国家: 美国
• 起止时间: 2008-09-01 至 2011-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0832025&HistoricalAwards=false
• 关键词: NEDG; Cooperative; Wireless; Networks; Theory

This project studies a paradigm in which nodes cooperate by pooling power and bandwidth resources and where flows interact opportunistically to avoid interference and increase network utilization. The PIs will leverage their existing expertise in cooperative and opportunistic communications to analyze the implications for broader networks of communication nodes. In particular, they will instantiate their design philosophy in three ways: Node Information Management: While previous network analyses considered only isolated aspects of a node (e.g., channel gain), the project studies a comprehensive network state information, which captures not only physical-layer conditions but also higher-layer information such as queue state, processing power, and availability of forwarding routes. Novel Network Representations: Instead of regarding the network as a simple connectivity graph, the PIs will introduce and develop a network representation which incorporates both temporal and spatial relationships between nodes. The PIs refer to this as the trellis representation of the network, and it will enable us to describe cooperative and opportunistic communication in a wide area network. The trellis will provide a structure in which to identify opportunities for physical layer cooperation, determine the impact of cooperation on neighboring nodes and flows, and opportunistically schedule and route competing flows at fine grained time scales.Distributed Cooperative Discovery: Traditional discovery protocols for determining network connectivity are unable to identify cooperative links. New techniques will be developed that leverage existing discovery protocols to efficiently locate potential cooperative topologies, which are a key to opportunistic communication. These discovery protocols will recover network state information and enable the use of the trellis representation to identify the optimal cooperative route through the network.With these tools, the PIs will develop and analyze protocols for coordinating cooperative and opportunistic communications in heterogeneous networks. The new protocols will expand access in underserved areas while increasing throughput in existing networks. This research will have a broad impact on education by engaging undergraduate and graduate students in the Rice Center for Multimedia Communication (CMC) laboratory. Cooperative communication will be integrated into several courses at Rice in the wireless communication and networking areas. Software and firmware modules as well as publications will be distributed through the WARP open-access repository(\href{http://warp.rice.edu/trac}{http://warp.rice.edu/trac}).

该项目研究了一个范式，其中通过汇总功率和带宽资源来进行节点合作，并且流动相互作用以避免干扰并增加网络利用率。 PI将利用其现有的专业知识在合作和机会性通信方面分析对更广泛的通信节点网络的影响。特别是，他们将通过三种方式实例化设计理念：节点信息管理：虽然先前仅考虑的网络分析仅考虑了节点的隔离方面（例如，渠道增益），但该项目研究了一个全面的网络状态信息，该信息不仅可以捕获物理范围的条件，而且还捕获了较高的信息，还捕获了诸如排队状态的较高信息，例如排队状态，处理能力和转发途径的可用性。新颖的网络表示：PIS将不是将网络作为简单的连接图，而是将网络表示并开发一个网络表示，该网络表示结合了节点之间的时间和空间关系。 PI将其称为网络的格子代表，它将使我们能够描述大区域网络中的合作和机会主义沟通。格子将提供一种结构，以确定物理层合作的机会，确定合作对相邻节点和流动的影响，以及在细性的时间尺度上进行机会主义的安排和路线竞争流。分配的合作发现：确定网络连接性的传统发现协议无法识别合作链接。 将开发新的技术，利用现有的发现协议来有效地定位潜在的合作拓扑，这是机会性交流的关键。这些发现协议将恢复网络状态信息，并允许使用格子表示来确定通过网络的最佳合作路线。使用这些工具，PIS将开发和分析协调非均质网络中的合作和机会性通信的协议。新协议将在服务不足的区域扩展访问权限，同时增加现有网络中的吞吐量。 这项研究将通过在赖斯多媒体传播中心（CMC）实验室参与本科生和研究生来对教育产生广泛的影响。合作通信将在无线通信和网络领域的大米中纳入多个课程。软件和固件模块以及出版物将通过Warp Open-Access存储库（\ href {http://warp.rice.edu/trac} {http://warp.rice.rice.rice.edu/trac}）。