Dynamic hierarchical mobility management strategy for mobile IP networks
Dynamic hierarchical mobility management strategy for mobile IP networks
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DOI：
10.1109/jsac.2004.825968
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发表时间：
2004-05-01
影响因子：
16.4
通讯作者：
Fang, YG
中科院分区：
文献类型：
--
作者：
Ma, WC;Fang, YG
无线网络设计的主要挑战之一是有效的移动性管理，这可以在全球（宏移动性）和本地（微移动性）解决。移动的因特网协议（IP）是解决移动的主机（MH）的全球移动性的普遍接受的标准。它要求MH在其转交地址改变时向归属代理（HA）注册。然而，这样的注册可能导致过多的信令业务和长的服务延迟。为了解决这个问题，提出了层次化移动的IP（HMIP）协议，该协议采用层次化的外地代理（FA）和网关FA（GFA）来本地化注册操作。然而，系统性能的关键影响的选择的GFAs和他们的可靠性。本文提出了一种新的移动的IP网络的动态分层移动性管理策略，在该策略中，为不同的用户动态地建立不同的层次结构，并在网络中均匀地分配信令负担。为了证明我们提出的方案的有效性，我们开发了一个分析模型来评估信令成本。我们的性能分析表明，所提出的动态分层移动性管理策略，可以显着降低系统的信令成本在各种情况下，系统的鲁棒性大大增强。我们的分析还表明，新的方案可以优于互联网工程任务组移动的IP分层注册计划的整体信令成本。更重要的贡献是新的分析方法在评估移动的IP网络的性能。
One of the major challenges for the wireless network design is the efficient mobility management, which can be addressed globally (macromobility) and locally (micromobility). Mobile Internet protocol (IP) is a commonly accepted standard to address global mobility of mobile hosts (MHs). It requires the MHs to register with the home agents (HAs) whenever their care-of addresses change. However, such registrations may cause excessive signaling traffic and long service delay. To solve this problem, the hierarchical mobile IP (HMIP) protocol was proposed to employ the hierarchy of foreign agents (FAs) and the gateway FAs (GFAs) to localize registration operations. However, the system performance is critically affected by the selection of GFAs and their reliability. In this paper, we introduce a novel dynamic hierarchical mobility management strategy for mobile IP-networks, in which different hierarchies are dynamically set up for different users and the signaling burden is evenly distributed among the network. To justify the effectiveness of our proposed scheme, we develop an analytical model to evaluate the signaling cost. Our performance analysis shows that the proposed dynamic hierarchical mobility management strategy can significantly reduce the system signaling cost under various scenarios and the system robustness is greatly enhanced. Our analysis also shows that the new scheme can outperform the Internet Engineering Task Force mobile IP hierarchical registration scheme in terms of the overall signaling cost. The more important contribution is the novel analytical approach in evaluating the performance of mobile IP networks.