Predictive handover mechanism based on required time estimation in heterogeneous wireless networks

S. Yoo, D. Cypher, Nada Golmie
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引用次数: 30

Abstract

In most conventional layer 2 triggering approaches, a pre-defined threshold for a specific perspective such as the received signal strength is used so that it may cause too late or too early handover executions. In this paper we propose a new predictive handover framework that uses the neighbor network information to generate timely the link triggers so that the required handover procedures can appropriately finish before the current link goes down. First we estimate a required handover time for the given neighbor network conditions, then using a predictive link triggering mechanism the handover start time is dynamically determined to minimize handover costs. The handover costs are analyzed in terms of the total required handover time and the service disruption time. The numerical analysis and simulation results show that the proposed method significantly enhances the handover performance.
异构无线网络中基于所需时间估计的预测切换机制
在大多数传统的第2层触发方法中,为特定的视角(如接收到的信号强度)使用预定义的阈值,因此它可能导致切换执行过晚或过早。本文提出了一种新的预测切换框架,该框架利用相邻网络信息及时生成链路触发器,以便在当前链路中断之前适当地完成所需的切换程序。首先估计给定邻居网络条件下所需的切换时间,然后使用预测链路触发机制动态确定切换开始时间,以最小化切换成本。从总所需切换时间和业务中断时间两方面分析切换成本。数值分析和仿真结果表明,该方法显著提高了切换性能。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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