NeTS: Medium: Collaborative Research: MIMO-Pipe Modeling, Scheduling and Delay Analysis in Multi-hop MIMO Networks

该奖项是根据2009年《美国复苏和再投资法案》(公法111-5)提供资金的。多跳网络和点对点设置之间的根本区别表明，在多跳网络中利用MIMO增益需要从高信噪比体制到干扰受限体制的范例转变。该项目承担了一项广泛的研究议程，其中心是开发基础理论，以实现无线网络中的最佳吞吐量和延迟性能。第一个关键步骤是采用自下而上的方法来提取MIMO链路的实体模型，同时考虑干扰，并提取与有意义的MIMO流配置相对应的一组可行的速率/可靠性要求。在MIMO-PIPE调度的一个共同主线下，本项目致力于解决以下挑战：1)建立多跳网络中“MIMO-PIPES”的速率/可靠性模型；2)基于吞吐量最大化和时延最小化的MIMO-PIPE调度；以及3)具有时延约束的MIMO-PIPES实时调度(针对时间关键业务)。该项目有助于形成多跳MIMO网络的新的基础理论，对许多无线应用具有直接的影响。特别是，实时调度有助于利用VANET中的MIMO收益可靠地传递及时的信息，以拯救生命和提高生活质量。代表人数不足的本科生和研究生都参与了这一项目。

This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111- 5). The fundamental differences between multi-hop networks and point-to-point settings indicate that leveraging MIMO gains in multi-hop networks requires a paradigm shift from high SNR regimes to interference-limited regimes. This project undertakes a broad research agenda centered around developing fundamental theory towards achieving optimal throughput and delay performance in wireless networks. The first key step is to take a bottom-up approach for solid model abstraction of MIMO links while taking into account interference, and to extract a set of feasible rate/reliability requirements, corresponding to meaningful MIMO stream configurations. Under a common thread of MIMO-pipe scheduling, this project focuses on tackling the following challenges: 1) Developing rate/reliability models for ``MIMO-pipes'' in multi-hop networks; 2) MIMO-pipe scheduling for throughput maximization and delay minimization; and 3) Real-time scheduling of MIMO-pipes with delay constraints (for time-critical traffic). This project contributes to the formulation of new fundamental theories for multi-hop MIMO networks, which have direct impacts on many wireless applications. Particularly, real-time scheduling sheds much light on leveraging MIMO gains in VANET to deliver timely information reliably to save lives and improve quality of life. Underrepresented undergraduate students as well as graduate students participate in this project.