Joint Performance Optimization of Wireless Networks and Control Systems

无线网络和控制系统的联合性能优化

• 批准号: 0140700
• 负责人: Stephen Boyd
• 金额: $ 15万
• 依托单位: Stanford University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-08-01 至 2005-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0140700&HistoricalAwards=false
• 关键词: Joint; Performance; Optimization; Wireless; Networks

Joint Performance Optimization of Wireless Networks and Control SystemsCurrent control technology is not well suitedto operation over a packet based network, and conversely,most networks are not optimized for control applications. Moreover, critical network performance parameters that affect controlsystem performance, such as bit ratesand delay and packet loss statistics, depend on variouschoices made in the network, such as powers allocated to wirelesstransmitters, bandwidths or time-slot fractions allocated to channels, and routing methods.So in addition to the challenge of working out how a controlsystem can be made to work in a packet-based networked environment, we alsohave the challenge of working out how the network should be configured, or operated, so as to improve control system performance.This proposal addresses two fundamental issues that arise.Neither solves the whole problem, but each addresses a critical issue.The first topic involves joint optimization ofa controller and critical communication and networkparameters such as transmit powers, packet routing, andbandwidth and time-slot allocation. To simplify this problem, only the affects of thesenetwork parameters on bit rates, hence quantization noise, is considered. The second topic considered issimultaneous routing and resource allocation for wirelessdata networks.This is the problem of jointly finding an optimal setof flows and communication resources that maximize the performance ofthe network, with respect to some objective such as optimalcontrol system performance.Here we hope to develop algorithms to dynamically allocatecommunication resources (such as transmit powers, bandwidth)and simultaneously optimize routing decisions.

无线网络和控制系统的联合性能优化目前的控制技术并不适合在基于分组的网络上运行，相反，大多数网络也没有针对控制应用进行优化。此外，影响控制系统性能的关键网络性能参数，如比特率、延迟和丢包统计，取决于网络中的各种选择，如分配给无线发射机的功率、分配给信道的带宽或时隙分数，以及路由方法。因此，除了解决如何使控制系统在基于分组的网络环境中工作的挑战之外，我们还面临着解决如何配置或操作网络以提高控制系统性能的挑战。这项建议解决了出现的两个基本问题。两者都不能解决整个问题，但都解决了一个关键问题。第一个主题涉及控制器和关键通信和网络参数的联合优化，如传输功率、分组路由、带宽和时隙分配。为了简化这个问题，我们只考虑这些网络参数对比特率的影响，因此我们只考虑量化噪声。第二个主题考虑的是无线数据网络的同步路由和资源分配。这是一个共同寻找流量和通信资源的最优集合，使网络性能最大化的问题，相对于一些目标，如最优控制系统性能。在这里，我们希望开发算法来动态分配通信资源（如传输功率，带宽），同时优化路由决策。