Lecture 2 Fundamentals of Wireless and mobile computer Networks networking James F Kur Keith W. Ross A note on the use of these ppt slides Were 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 represent a lot of work on our part. In retum for use, we only ask the A Top Down Approach following Featuring the Internet O if 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! O if you post any slides in substantially unaltered form on a w site, that Jim Kurose, Keith Ross you note that they are adapted from (or perhaps identical to) our slides, and note our copyright of this materi Addison-Wesley, July 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 Lecture 2 Fundamentals of 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
Wireless and Mobile Networks Background: D# wireless(mobile) phone subscribers now exceeds #f wired phone subscribers D computer nets: laptops, palmtops, PDAs Internet-enabled phone promise anytime untethered Internet access o 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 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 口65 Principles: Wireless addressing and routing 06.2 Wireless links to mobile users characteristics 066 Mobile ip O CDMA 06.7 Handling mobility in 6.3IEEE802.11 cellular networks wireless LANscwi-fi")D6.8 Mobility and higher 06.4 Cellular Internet yer proToco ls Access o architecture 6.9 Summary o standards(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 o laptop, PDA, IP phone 口 run applications o 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 t wired network elay-responsible for sending packets between wired network network and wireless infrastructure host(s in its"area o e.g., cell towers 802.11 access oints 6: Wireless and mobile ks6-5
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