1、 毕 业 设 计（论 文） 题 目：基于接收信号强度的垂直切换的研究 专 业： 网络工程 日期： 2012 年 3 月 14 日至 2013 年 6 月 15 日 摘 要 未来的通信网络是一个包含不同接入技术的异构网络，能提供多种接入方式、传输速 率、覆盖范围，以及对多种服务质量的支持能力等。作为异构网络移动性管理技术中重要 组成部分的垂直切换技术，用于保证用户跨异构网络移动时的会话连续性，已经成为了异 构网络中最具挑战性的关键技术之一。 本文介绍了异构无线网络资源管理技术及其研究意义，对异构无线网络切换技术的理 论和实现研究现状进行了分析， 为本设计确定了方向； 重点介绍了异构无线网络垂直切
2、换， 研究分析垂直切换判决算法原理，并介绍几个经典的垂直切换判决算法；研究基于接收信 号强度的垂直切换算法，参考相关文献，对后来的详细代码设计起到了提纲挈领的作用， 并研究前人的基于 MATLAB 平台下的 MATLAB 代码，分别仿真出两个网络随时间变化的接收 信号强度变化图和切换标志变化图。 关键字：异构网络；垂直切换；MATLAB； ABSTRACT Future communication network is a heterogeneous contain different network access technologies that can provide a variety
3、 of access methods, transmission speed, coverage, and quality of service support for a variety of ability. As a heterogeneous network mobility management technology an important part of the vertical handover technique used to ensure that users across heterogeneous networks session continuity when mo
4、ving, heterogeneous networks has become the most challenging one of the key technologies. This article describes the heterogeneous wireless network resource management technologies and their significance for heterogeneous wireless network switching technology the theory and implementation studies an
5、alyzed the current situation, is designed to determine the direction; focuses on the vertical handoff in heterogeneous wireless networks, research analysis of vertical handover decision algorithm, and introduced several classical vertical handoff decision algorithm; study is based on the received si
6、gnal strength of the vertical handover algorithm, refer to the relevant literature, and later played a detailed code design focused on the vital role, and based on previous research MATLAB platform MATLAB code, respectively, the two networks simulation time-varying changes in the received signal strength map and switch flag change map. Key words：heterogeneous networks；vertical handoff；MATLAB 目 录 第一章 绪论 . 1 1.1 课题背景 1 1.1.1 异构网络融合发展 . 2 1.1.2 移动性管理技术 . 2 1.1.3 异构网络切换技术 . 3 1.2 无线通信仿真建
