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 6-26: 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