Chapter 6 Wireless and Mobile computer Networks networking lames F.Kurose Keith W.Ross 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 can add,modify,and delete slides Computer Networking: (including this one)and slide content to suit your needs.They obviously A Top Down Approach represent a lot of work on our part.In return for use,we only ask the following: Featuring the Internet, f you use these slides(e.g.,in a class)in substantially unaltered form, 3rd edition that you mention their source(after all,we'd like people to use our book!) f you post any slides in substantially unaltered form on a ww site,that Jim Kurose,Keith Ross you note that they are adapted from(or perhaps identical to)our slides,and Addison-Wesley,July note our copyright of this material. 2004. Thanks and enjoy!JFK/KWR All material copyright 1996-2006 J.F Kurose and K.W.Ross,All Rights Reserved 6:Wireless and Mobile Networks 6-1
6: Wireless and Mobile Networks 6-1 Chapter 6 Wireless and Mobile Networks Computer Networking: A Top Down Approach Featuring the Internet, 3rd edition. Jim Kurose, Keith Ross Addison-Wesley, July 2004. 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 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) in substantially unaltered form, that you mention their source (after all, we’d like people to use our book!) ❑ If you post any slides in substantially unaltered form 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 1996-2006 J.F Kurose and K.W. Ross, All Rights Reserved
Chapter 6:Wireless and Mobile Networks Background: wireless(mobile)phone subscribers now exceeds wired phone subscribers! computer nets:laptops,palmtops,PDAs, Internet-enabled phone promise anytime untethered Internet access two important (but different)challenges o communication over wireless link o handling mobile user who changes point of attachment to network 6:Wireless and Mobile Networks 6-2
6: Wireless and Mobile Networks 6-2 Chapter 6: Wireless and Mobile Networks Background: # wireless (mobile) phone subscribers now exceeds # wired phone subscribers! computer nets: laptops, palmtops, PDAs, Internet-enabled phone promise anytime untethered Internet access two important (but different) challenges communication over wireless link handling mobile user who changes point of attachment to network
Chapter 6 outline 6.1 Introduction Mobility ▣6.5 Principles: Wireless addressing and routing 6.2 Wireless links, to mobile users characteristics ▣6.6 Mobile IP o CDMA 6.7 Handling mobility in ▣6.3IEEE802.11 cellular networks wireless LANs ("wi-fi") 6.8 Mobility and higher- 6.4 Cellular Internet layer protocols Access o architecture 6.9 Summary ostandards(e.g.,GSM) 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 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 higherlayer protocols 6.9 Summary
Elements of a wireless network wireless hosts- laptop,PDA,IP phone ▣run applications ▣may be stationary (non-mobile)or mobile network o wireless does not infrastructure always mean mobility 6:Wireless and Mobile Networks 6-4
6: Wireless and Mobile Networks 6-4 Elements of a wireless network network infrastructure wireless hosts laptop, PDA, IP phone run applications may be stationary (non-mobile) or mobile wireless does not always mean mobility
Elements of a wireless network base station typically connected to wired network ▣relay-responsible for sending packets between wired network network and wireless infrastructure host(s)in its "area" o e.g.,cell towers 802.11 access points 6:Wireless and Mobile Networks 6-5
6: Wireless and Mobile Networks 6-5 Elements of a wireless network network infrastructure base station typically connected to wired network relay - responsible for sending packets between wired network and wireless host(s) in its “area” e.g., cell towers 802.11 access points