Hierarchical mobile IPv6 （HMIPv6） introduces a mobility anchor point to reduce the signaling overhead and handoff latency. In this paper, we apply the matrix-analytical approach to explore the performance measures o...Hierarchical mobile IPv6 （HMIPv6） introduces a mobility anchor point to reduce the signaling overhead and handoff latency. In this paper, we apply the matrix-analytical approach to explore the performance measures of the ongoing mobile nodes （MNs） drop and new MNs block probabilities of mobility anchor point with a guard bandwidth reservation scheme. We apply the Markovian arrival process （MAP） to model ongoing MNs and new MNs. Five related performance measures are derived, including the long-term new MN block and ongoing MN drop probabilities, and the three short-term measures of average length of a block period and a non-block period, as well as the conditional ongoing MN drop probability during a block period. These performance measures greatly assist the guard bandwidth reservation mechanism in determining a proper threshold guard bandwidth. The results presented in this paper can provide guidelines for designing adaptive algorithms to adjust the threshold in the guard bandwidth reservation scheme.展开更多
在LMAP(Localization with mobile anchor points in wireless sensor networks)算法的基础上提出了一种改进算法:ELMAP算法。ELMAP算法改进了原算法的参考信息分组的选取机制,以达到摆脱对节点传输模型假设的依赖和提高实际应用中定位...在LMAP(Localization with mobile anchor points in wireless sensor networks)算法的基础上提出了一种改进算法:ELMAP算法。ELMAP算法改进了原算法的参考信息分组的选取机制,以达到摆脱对节点传输模型假设的依赖和提高实际应用中定位性能的目的。该算法选取具有相同接收信号强度(RSS)值的信息分组作为参考信息分组来对未知节点进行定位计算。仿真结果表明ELMAP算法比原算法具有更强的环境适应能力,并且可以通过调节接收到的信息分组数量和限定用于定位计算的参考信息分组的RSS值的范围来达到最佳状态。展开更多
文摘Hierarchical mobile IPv6 （HMIPv6） introduces a mobility anchor point to reduce the signaling overhead and handoff latency. In this paper, we apply the matrix-analytical approach to explore the performance measures of the ongoing mobile nodes （MNs） drop and new MNs block probabilities of mobility anchor point with a guard bandwidth reservation scheme. We apply the Markovian arrival process （MAP） to model ongoing MNs and new MNs. Five related performance measures are derived, including the long-term new MN block and ongoing MN drop probabilities, and the three short-term measures of average length of a block period and a non-block period, as well as the conditional ongoing MN drop probability during a block period. These performance measures greatly assist the guard bandwidth reservation mechanism in determining a proper threshold guard bandwidth. The results presented in this paper can provide guidelines for designing adaptive algorithms to adjust the threshold in the guard bandwidth reservation scheme.
文摘在LMAP(Localization with mobile anchor points in wireless sensor networks)算法的基础上提出了一种改进算法:ELMAP算法。ELMAP算法改进了原算法的参考信息分组的选取机制,以达到摆脱对节点传输模型假设的依赖和提高实际应用中定位性能的目的。该算法选取具有相同接收信号强度(RSS)值的信息分组作为参考信息分组来对未知节点进行定位计算。仿真结果表明ELMAP算法比原算法具有更强的环境适应能力,并且可以通过调节接收到的信息分组数量和限定用于定位计算的参考信息分组的RSS值的范围来达到最佳状态。
