A seamless and proactive end-to-end mobility solution for roaming across heterogeneous wireless networks
A seamless and proactive end-to-end mobility solution for roaming across heterogeneous wireless networks
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DOI：
10.1109/jsac.2004.826921
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发表时间：
2004-06
影响因子：
16.4
通讯作者：
Chuanxiong Guo;Zihua Guo;Qian Zhang;Wenwu Zhu
中科院分区：
文献类型：
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作者：
Chuanxiong Guo;Zihua Guo;Qian Zhang;Wenwu Zhu
跨无线广域网 (WWAN) 和无线局域网 (WLAN) 等异构无线网络的漫游带来了相当大的挑战，因为通常很难维持现有连接并保证必要的服务质量。本文提出了一种新颖的无缝且主动的端到端移动管理系统，该系统可以通过结合智能网络状态检测机制来维持基于端到端原则的连接。所提出的系统由两个组件组成：连接管理器（CM）和虚拟连接（VC）。 CM通过使用新颖的媒体访问控制层和物理层感知技术，可以获得准确的网络状况，同时减少不必要的切换和乒乓效应。 VC 可以使用本地连接转换使移动性对应用程序透明，无需额外的网络层基础设施支持，并且可以使用订阅/通知服务在网络地址转换器和同时移动情况下很好地处理移动性。所提出的系统具有几个独特的优点：1）能够主动、准确地对漫游事件做出反应； 2）保持连接的连续性，切换时延小； 3) 成为 IPv4 和 IPv6 网络的统一端到端方法。我们构建了一个原型系统并进行了实验来证明所提出系统的优点。
Roaming across heterogeneous wireless networks such as wireless wide area network (WWAN) and wireless local area network (WLAN) poses considerable challenges, as it is usually difficult to maintain the existing connections and guarantee the necessary quality-of-service. This paper proposes a novel seamless and proactive end-to-end mobility management system, which can maintain the connections based on the end-to-end principle by incorporating an intelligent network status detection mechanism. The proposed system consists of two components, connection manager (CM) and virtual connectivity (VC). The CM, by using novel media access control-layer and physical-layer sensing techniques, can obtain accurate network condition, while at the same time reducing the unnecessary handoff and ping-pong effect. The VC can make mobility transparent to applications without additional network-layer infrastructure support using a local connection translation, and can handle mobility well in the network address translator and simultaneous movement cases using a subscription/notification service. The proposed system enjoys several unique advantages: 1) capable of reacting to roaming events proactively and accurately; 2) maintaining the connection's continuity with small handoff delay; and 3) being a unified end-to-end approach for both IPv4 and IPv6 networks. We have built a prototype system and performed experiments to demonstrate the advantages of the proposed system.