CISE PostDOC: Experimental Research on Wireless ATM Network

9805538 Hughes, Herman D. 密歇根州立大学 CISE 博士后：无线 ATM 网络实验研究 这项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。开发了分层切换方案来支持无线和有线ATM网络集成的连接切换。这种切换方案结合了集群、增量连接重建和虚拟分层网络技术，以提供快速高效的连接重新路由。该方案中包含一种特殊机制，用于将未传送和错误路由的信元重新路由到目的地，从而减少由于连接切换而导致的信元丢失。使用两种方法评估正在考虑的切换程序。首先，要进行的分析呈现理论性能，确定连接中断时间、缓冲区要求和信元丢失率等指标。其次，将使用高速网络和性能 (HSNP) 实验室 ATM 测试台进行实验（通过无线设备和仿真）。 这项研究意义重大，因为它涉及与无线 ATM 网络相关的关键互操作性问题。博士后研究员将在该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.