Adaptive Route Optimization in Hierarchical Mobile IPv6 Networks
Adaptive Route Optimization in Hierarchical Mobile IPv6 Networks
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DOI：
10.1109/tmc.2007.1010
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发表时间：
2007-08
影响因子：
7.9
通讯作者：
Sangheon Pack;Xuemin Shen;J. Mark;Jianping Pan
中科院分区：
文献类型：
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作者：
Sangheon Pack;Xuemin Shen;J. Mark;Jianping Pan
通过引入移动锚点 (MAP)，分层移动 IPv6 (HMIP6) 减少了与移动 IPv6 相关的信令开销和切换延迟。然而，如果移动节点 (MN) 的会话活动较高且其移动性相对较低，则 HMIPv6 可能会由于 MAP 处的额外数据包隧道而降低端到端数据吞吐量。在本文中，我们提出了一种自适应路由优化（ARO）方案来提高HMIPv6网络的吞吐量性能。根据测量的会话移动率 (SMR)，ARO 自适应地选择两种不同的路由优化算法之一。具体地，如果通信节点(CN)的SMR大于预定义阈值，则MN向通信节点(CN)通知其链路上转交地址(LCoA)。如果SMR等于或低于阈值，则向CN通知MN的区域CoA(RCoA)。我们在平衡信令开销减少和数据吞吐量提高方面分析了 ARO 的性能。我们还明确导出了最佳 SMR 阈值以实现这种平衡。分析和仿真结果表明ARO是在HMIPv6网络中部署的可行方案。
By introducing a mobility anchor point (MAP), Hierarchical Mobile IPv6 (HMIP6) reduces the signaling overhead and handoff latency associated with Mobile IPv6. However, if a mobile node (MN)'s session activity is high and its mobility is relatively low, HMIPv6 may degrade end-to-end data throughput due to the additional packet tunneling at the MAP. In this paper, we propose an adaptive route optimization (ARO) scheme to improve the throughput performance in HMIPv6 networks. Depending on the measured session-to-mobility ratio (SMR), ARO chooses one of the two different route optimization algorithms adaptively. Specifically, an MN informs a correspondent node (CN) of its on-link care-of address (LCoA) if the CN's SMR is greater than a predefined threshold. If the SMR is equal to or lower than the threshold, the CN is informed with the MN's regional CoA (RCoA). We analyze the performance of ARO in terms of balancing the signaling overhead reduction and the data throughput improvement. We also derive the optimal SMR threshold explicitly to achieve such a balance. Analytical and simulation results demonstrate that ARO is a viable scheme for deployment in HMIPv6 networks.