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An adaptive mobility anchor point selection scheme in Hierarchical Mobile IPv6 networks

机译:分层移动IPv6网络中的自适应移动性锚点选择方案

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摘要

In Hierarchical Mobile IPv6 (HMIPv6) networks, the mobility anchor point (MAP) is introduced to localize binding update messages destined to the home agent. In a large-scale wireless/mobile network, multiple MAPs may be deployed in order to provide more scalable and robust mobile services. In this case, it is important for a mobile node (MN) to select the most appropriate MAP among them. In this paper, we propose an adaptive MAP selection scheme for HMIPv6 networks. In the adaptive MAP selection scheme, an MN first estimates its session-to-mobility ratio (SMR). Then, based on its SMR, the MN chooses a MAP that minimizes the total cost, consisting of the binding update cost and packet delivery cost. In addition, the MN calculates two threshold SMR values, which adaptively trigger a new MAP selection procedure. If the estimated SMR is larger (or smaller) than the upper (or lower) threshold SMR value, the MN recalculates the total cost and re-selects a MAP that minimizes the total cost. Simulation results indicate that the adaptive MAP selection scheme achieves a lower total cost and a better load balancing than the previous schemes.
机译:在分层移动IPv6(HMIPv6)网络中,引入了移动定位点(MAP)来定位发往本地代理的绑定更新消息。在大规模无线/移动网络中,可以部署多个MAP,以提供更可扩展和更强大的移动服务。在这种情况下,对于移动节点(MN)选择最合适的MAP至关重要。在本文中,我们提出了一种用于HMIPv6网络的自适应MAP选择方案。在自适应MAP选择方案中,MN首先估计其会话移动率(SMR)。然后,基于其SMR,MN选择一个使总成本最小的MAP,该总成本包括绑定更新成本和数据包交付成本。另外,MN计算两个阈值SMR值,其自适应地触发新的MAP选择过程。如果估计的SMR大于(或小于)上(或下)阈值SMR值,则MN重新计算总成本并重新选择使总成本最小的MAP。仿真结果表明,自适应MAP选择方案比以前的方案具有更低的总成本和更好的负载平衡。

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