WLAN与WiMAX融合网络中的切换研究
Study of handover in WLAN and WiMAX Integrated Network
本文首先在应用和成本、网络结构及运营模式、覆盖范围及传输速率、QoS支持等方面比较了WLAN和WiMAX两种技术。通过比较，我们在以上几个方面提出了在这两种网络组成的融合网络中实现无缝切换需解决的一些关键问题。随后，我们介绍了最新的IEEE802.21标准，这一标准致力于解决在WLAN和WiMAX融合过程中出现的一些问题。针对这些问题，IEEE802.21标准提出了媒质独立切换（MIH）的概念。基于这一概念，我们将MIH架构应用于WLAN与WiMAX融合的网络，假定了一个两种网络融合的应用场景，针对这一场景分析了具体的无缝切换流程，并给出了完整的流程图。最后，本文提出了未来在异构网络切换管理上可能的研究方向。
In this paper, we compared the IEEE802.11 standard for WLANs and the IEEE802.16 standard for WiMAX in aspects of application & cost, network structure & operation mode, service coverage & speed, and QoS support. Through comparison, we highlighted the main features that complement/differentiate from each other in these aspects and corresponding basic integration issues. Then, we presented the IEEE802.21 standard, which is aiming to give a practical solution for all the issues in the integration of WiFi and WiMAX. In IEEE802.21 standard, a new handover mode, namely, Media Independent Handover (MIH) is defined. We applied the MIH structure in a hypothetically integrated network of WiFi and WiMAX, and analyzed the handover signaling. Then, an entire handover signaling flow chart is presented in this paper. Finally, we discussed the future direction of seamless handover for the heterogeneous networks.
李伟
无线通信通信
WLANWiMAX融合切换IEEE802.21
WLANWiMAXintegratedhandoverIEEE802.21
李伟.WLAN与WiMAX融合网络中的切换研究[EB/OL].(2009-02-11)[2025-07-22].http://www.paper.edu.cn/releasepaper/content/200902-510.点此复制
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