Control & Performance Trade-offs in Multihop Wireless Networks

控制

• 批准号: 9818913
• 负责人: Anthony Ephremides
• 金额: $ 67.1万
• 依托单位: University of Maryland, College Park
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-08-15 至 2003-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9818913&HistoricalAwards=false
• 关键词: Control; & Performance; Trade; offs

All-wireless and, possibly, all-mobile communication networks are likely to operate in the future for both commercial and military applications, as a result of increasing pressure for communication while``on the move.'' Such networks differ from traditional ones in fundamental ways since they may not share the fixed, ``wired'' communication infrastructure. They are refereed to as ``multihop wireless networks".They may arise as alternative means of providing personal communication services, or as specialized networks that are ``stand-alone'' or are weakly coupled to the general infrastructure. The researchers propose to study the fundamental principles of operation and design that are unique to these networks,and to develop a prototype design for a bi-level (two tier) multihop architecture that will be based on these principles.Specifically, the researchers plan to address the following questions and to study the associated performance trade-offs that pertain mostly to layers 2-4 in the networking architecture:a) what routing algorithms are well-suited to variable connectivity environments?b) what address and mobility management methods are appropriate? how are they coupled to routing in this context?c) what multicasting methods are possible?d) what should be the role of power management as a network control parameter to conserve battery energy?e) what are the fundamental trade offs between ``push" and ``pull" communications in asymmetric network architectures?f) what is the best utilization of path diversity for reliability and efficiency under channel impairment conditions?g) what resource allocation approaches are appropriate?By leveraging other support, the researchers intend to implement some control policies developed as a result of this investigation in an existing network testbed, and use this experience as an aid in developing a design model for multihop wireless networks. This testbed exists in the Hybrid Networks Laboratory of the Institute for Systems Research at the University of Maryland and leverages the existing equipment and humanresource facilities available at the lab.

由于沟通压力的增加，因此，全部无线电通信网络可能会在未来的商业和军事应用中运作。这种网络以基本的方式与传统网络有所不同，因为它们可能无法共享固定的````有线'''''''''''''''''''''''''''''''''''''''''沟通基础结构。 它们被裁定为``多直线无线网络''。它们可能是提供个人通讯服务的替代手段，或者作为``独立'''或弱耦合到一般基础架构的专业网络。研究人员计划解决以下问题并研究与网络体系结构中的2-4层有关的相关性能权衡：电力管理作为节省电池能量的网络控制参数的作用吗？在现有的网络测试中进行调查，并利用这种经验作为为多台面无线网络开发设计模型的帮助。 该测试台存在于马里兰大学系统研究所的混合网络实验室中，并利用实验室可用的现有设备和人力资源设施。