Chapter 6 Computer Networking Wireless and Mobile networks KUROSE ROSS Anote on the use of these ppt slides We re making these slides freely available to all(faculty, students, readers) Combuter They re in PowerPoint form so you see the animations; and can add, modify and delete slides(including this one) and slide content to suit your needs Networking: A Top They obviously represent a lot of work on our part. In return for use, we only ask the following Down Approach .I If you use these slides(e.g, in a class)that you mention their source (after all, we d like people to use our book!) 6th edition .I if you post any slides on a ww site, that you note that they are adapted Jim Kurose, Keith Ross from(or perhaps identical to) our slides, and note our copyright of this material Addison-Wesley March 2012 Thanks and enjoy! JFK/KWR All material copyright 1996-2012 J F Kurose and K.W. Ross, All Rights Reserved Wireless. Mobile networks 6-1
Chapter 6 Wireless and Mobile Networks Computer Networking: A Top Down Approach 6 th edition Jim Kurose, Keith Ross Addison-Wesley March 2012 A note on the use of these ppt slides: We’re making these slides freely available to all (faculty, students, readers). They’re in PowerPoint form so you see the animations; and can add, modify, and delete slides (including this one) and slide content to suit your needs. They obviously represent a lot of work on our part. In return for use, we only ask the following: ❖ If you use these slides (e.g., in a class) that you mention their source (after all, we’d like people to use our book!) ❖ If you post any slides on a www site, that you note that they are adapted from (or perhaps identical to) our slides, and note our copyright of this material. Thanks and enjoy! JFK/KWR All material copyright 1996-2012 J.F Kurose and K.W. Ross, All Rights Reserved Wireless, Mobile Networks 6-1
Chapter6:无线和移动网络 Background: 口终端(特别是笔记本、智能手机)的处理能力越来 越强,成本越来越低,已经成为大众化的电子设备 T用户随时随地上网的意愿非常强烈 与有线固定网络相比,无线移动上网增加了以下两 方面的问题: o无线( wireless):使用无线链路通信,给物理层和 数据链路层带来很多问题 o移动( mobility):终端改变网络接入点,给网络层 带来很大问题 6: Wireless and Mobile Networks 6-2
6: Wireless and Mobile Networks 6-2 Chapter 6: 无线和移动网络 Background: 终端（特别是笔记本、智能手机）的处理能力越来 越强，成本越来越低，已经成为大众化的电子设备 用户随时随地上网的意愿非常强烈 与有线固定网络相比，无线移动上网增加了以下两 方面的问题： 无线（wireless）：使用无线链路通信，给物理层和 数据链路层带来很多问题 移动（mobility）：终端改变网络接入点，给网络层 带来很大问题
Chapter 6 outline 6.1 Introduction Mobility Wireless 口65 Principles: addressing and routing 6.2 Wireless links to mobile users characteristics g6.6 Mobile Ip 6.3IEEE802.11 wireless lANs cwi-fi) 0 6.7 Handling mobility in cellular networks 0 64 Cellular Internet Access D6.8 Mobility and higher yer proToco ls o architecture o standards(e. g, GSM) 6.9 Summary 6: Wireless and Mobile Networks 6-3
6: Wireless and Mobile Networks 6-3 Chapter 6 outline 6.1 Introduction Wireless 6.2 Wireless links, characteristics 6.3 IEEE 802.11 wireless LANs (“wi-fi”) 6.4 Cellular Internet Access architecture standards (e.g., GSM) Mobility 6.5 Principles: addressing and routing to mobile users 6.6 Mobile IP 6.7 Handling mobility in cellular networks 6.8 Mobility and higherlayer protocols 6.9 Summary
无线网络的组成 无线终端 口 laptop,PDA,工P电话 运行网络应用 口可能静止或移动 network o无线并不一定意味 infrastructure 着移动 6: Wireless and Mobile Networks 6-4
6: Wireless and Mobile Networks 6-4 无线网络的组成 network infrastructure 无线终端 laptop, PDA, IP电话 运行网络应用 可能静止或移动 无线并不一定意味 着移动
无线网络的组成 基站 口通常连接到固定网络,在 无线终端和固定网络之间 中继数据包 口如80211AP,蜂窝塔 network 口通常负责协调与之关联的 infrastructure 多个无线主机的传输 6: Wireless and mobile ks6-5
6: Wireless and Mobile Networks 6-5 无线网络的组成 network infrastructure 基站 通常连接到固定网络，在 无线终端和固定网络之间 中继数据包 如802.11AP，蜂窝塔 通常负责协调与之关联的 多个无线主机的传输