Chapter 6 Computer Networking A Top-Down Approach Wireless and Mobile Networks KUROSE ROSS A note on the use of these ppt slides: Computer 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. Networking:A 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 Top Down ask the following: If you use these slides (e.g.,in a class)that you mention their source Approach (after all,we'd like people to use our book!) 6th edition 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 Jim Kurose,Keith Ross material. Addison-Wesley Thanks and enjoy!JFK/KWR March 2012 urhts Reserved Wireless,Mobile Networks 6-1
Chapter 6 Wireless and Mobile Networks Computer Networking: A Top Down Approach 6th 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
Ch.6:Wireless and Mobile Networks Background: wireless (mobile)phone subscribers now exceeds wired phone subscribers(5-to-1)! wireless Internet-connected devices equals wireline Internet-connected devices laptops,Internet-enabled phones promise anytime untethered Internet access two important (but different)challenges wireless:communication over wireless link mobility:handling the mobile user who changes point of attachment to network Wireless,Mobile Networks 6-2
Wireless, Mobile Networks 6-2 Ch. 6: Wireless and Mobile Networks Background: # wireless (mobile) phone subscribers now exceeds # wired phone subscribers (5-to-1)! # wireless Internet-connected devices equals # wireline Internet-connected devices laptops, Internet-enabled phones promise anytime untethered Internet access two important (but different) challenges wireless: communication over wireless link mobility: handling the mobile user who changes point of attachment to network
Chapter 6 outline 6.1 Introduction Mobility Wireless 6.5 Principles:addressing and routing to mobile 6.2 Wireless links, users characteristics ·CDMA 6.6 Mobile IP 6.3 IEEE 802.11 wireless 6.7 Handling mobility in LANs ("Wi-Fi") cellular networks 6.4 Cellular Internet 6.8 Mobility and higher-layer Access protocols ■architecture standards(e.g,GSM） 6.9 Summary Wireless,Mobile Networks 6-3
Wireless, Mobile Networks 6-3 Chapter 6 outline 6.1 Introduction Wireless 6.2 Wireless links, characteristics CDMA 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 higher-layer protocols 6.9 Summary
Elements of a wireless network network infrastructure Wireless,Mobile Networks 6-4
Wireless, Mobile Networks 6-4 Elements of a wireless network network infrastructure
Elements of a wireless network wireless hosts laptop,smartphone run applications may be stationary(non- network mobile)or mobile infrastructure ■wireless does not always mean mobility Wireless,Mobile Networks 6-5
Wireless, Mobile Networks 6-5 wireless hosts laptop, smartphone run applications may be stationary (nonmobile) or mobile wireless does not always mean mobility Elements of a wireless network network infrastructure