A Novel Vertical Handoff Algorithm Based on Fuzzy Logic in Aid of Pre-decision Method

LIU Xia; JIANG Ling-ge; HE Chen

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A Novel Vertical Handoff Algorithm Based on Fuzzy Logic in Aid of Pre-decision Method

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- A Novel Vertical Handoff Algorithm Based on Fuzzy Logic in Aid of Pre-decision Method
- Acta Electronica Sinica Vol. 35, Issue 10, Pages: 1989-1993(2007)
- 作者机构：
  
  上海交通大学电子信息与电气工程学院,上海,200240
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN929.5
- Published：2007
- 稿件说明：
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LIU Xia, JIANG Ling-ge, HE Chen. A Novel Vertical Handoff Algorithm Based on Fuzzy Logic in Aid of Pre-decision Method[J]. Acta Electronica Sinica, 2007, 35(10): 1989-1993.
DOI：

LIU Xia, JIANG Ling-ge, HE Chen. A Novel Vertical Handoff Algorithm Based on Fuzzy Logic in Aid of Pre-decision Method[J]. Acta Electronica Sinica, 2007, 35(10): 1989-1993. DOI：

摘要

针对全IP核心网络的不同无线接入技术

提出一种基于预判决模糊逻辑的垂直切换算法.引入预判决方法有效减少不必要的数据量和系统开销.采用前向差分预测能够较准确地预测出下一时刻的信号强度

提高了切换触发速度和切换判决精度.采用模糊逻辑的方法

以接收信号强度、预测信号强度及可用带宽作为网络参量设计模糊逻辑控制器

进而采用归一量化的方法改进模糊逻辑系统

得到网络的综合性能值进行垂直切换判决.仿真分析表明

本文提出的算法能够较准确做出切换判决

有效消除乒乓效应

提高系统性能.

Abstract

Proposing a novel handoff algorithm based on fuzzy logic and pre-decision method

which can adapt to the dynamic network condition and reduce the system load

is applied to the All-IP heterogeneous network for vertical handoffs.And it is combined with the forward difference prediction for the signal strength of next time to improve the handoff accuracy.The results of simulations indicate that the proposed algorithm can make accurate handoff decision and eliminate the ping-pong effect in the process of vertical handoffs.

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