CISE PostDOC: Experimental Research on Wireless ATM Network

[805538] Hughes, Herman D.密歇根州立大学CISE博士后：无线ATM网络的实验研究本研究的重点是研究异步传输模式（ATM）信令协议的扩展，以支持混合网络环境中的连接切换。为了支持无线和有线ATM网络集成的连接切换，提出了一种分层切换方案。该切换方案结合了集群、增量连接重建和虚拟分层网络技术，提供了快速有效的连接重路由。该方案采用了一种特殊的机制，将未交付和路由错误的蜂窝重新路由到目的地，从而减少了由于连接切换造成的蜂窝损失。正在考虑的移交程序通过使用两种方法进行评估。首先，进行理论性能分析，确定连接中断时间、缓冲需求和单元损失率等指标。其次，实验（通过无线设备和仿真）将使用高速网络和性能（HSNP）实验室ATM测试平台进行。这项研究具有重要意义，因为它处理了与无线ATM网络相关的关键互操作性问题。博士后研究助理将在项目的各个方面发挥关键作用，包括实验部分。

9805538 Hughes, Herman D. Michigan State University CISE Postdoc: Experimental Research on Wireless ATM Network This research focuses on investigating extensions of the Asynchronous Transfer Mode (ATM) signaling protocol to support connection hand-offs in a hybrid network environment. A hierarchical hand-off scheme is developed to support connection hand-offs for the integration of the wireless and wireline ATM networks. This hand-off scheme combines the clustering, the incremental connection re-establishment, and the virtual hierarchical network techniques to provide fast and efficient connection re-routings. A special mechanism is included in this scheme to reroute undelivered and mis-routed cells to their destination, which in turn reduces cell loss due to connection hand-offs. The hand-off procedure under consideration is evaluated by using two approaches. First, an analysis to be conducted presents the theoretical performance, determining metrics such as connection disruption time, buffer requirement, and cell loss rate. Second, experiments (via wireless devices and emulations) are to be conducted by using the High Speed Networking and Performance (HSNP) Laboratory ATM testbed. This research is significant because it deals with key interoperability issues relating to wireless ATM networks. The Postdoctoral Research Associate will play a pivotal role in all aspects of this project, including the experimental portion.