2. Introduction

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Wi-Fi• Wi-Fi: Wireless Fidelity• A wireless technology brand owned by the Wi-Fi Alliance• Intended to improve the interoperability of WLAN products basedon the IEEE 80<strong>2.</strong>11 standards."Wi-Fi Certified" products• Several generations since 1997.• Supported in MS Windows, Apple Mac OS X, Unix, Linux• Wi-Fi use mode• Access points, a.k.a. hotspotsCity wide Wi-Fi• Wi-Fi routers: a cable modem + a Wi-Fi access pointWidely used in homes• Peer-to-peer mode without access points54
WLAN Ad-Hoc ConfigurationPeer to Peer Wireless LAN“Mobile and Wireless Design Essentials” (Mallick 2003)55
Page 1 and 2:
Mobile Software Technologies(SW8)Ba
Page 4: Early Mobile Phones• The first mo
Page 8 and 9: Definition of Mobile and Wireless
Page 10 and 11: Variability of The Mobile Environme
Page 12 and 13: Agenda• Mobile and Wireless Envir
Page 14 and 15: Software Architecture3 rd Party App
Page 16 and 17: Typical Mobile Development Platform
Page 18 and 19: A Comparison w.r.t. DevelopmentLear
Page 20: Mobile Software Architecture• Sta
Page 23 and 24: Peer-to-Peer Architecture• No ded
Page 25 and 26: Challenges• Different operating s
Page 27 and 28: Flash Memory• Flash memory is wid
Page 29 and 30: Domain Storage (DS)• Store unique
Page 31 and 32: ID Based Storage (IS)• Identifier
Page 33 and 34: BREAK?33
Page 35 and 36: Access to Corporate Infrastructure
Page 37 and 38: Consumer vs EnterpriseConsumer• S
Page 39 and 40: Revenues for Service Providers?•
Page 41 and 42: Wireless Networks• WWAN• Wirele
Page 43 and 44: Brief History of Cellular Systems
Page 45 and 46: GSM• Global System for Mobile com
Page 47 and 48: GPRS vs 3G• GPRS = General Packet
Page 49 and 50: GPRS Coverage by 200549
Page 51 and 52: Doubts Over 3G• Opinions• The d
Page 53: WLAN Applications• WLANs are used
Page 57 and 58: Wi-Fi Hotspots in The UK• Statist
Page 59 and 60: Wi-Fi Hotspots in Denmark• http:/
Page 61 and 62: IrDA: Infrared Data Association•
Page 63 and 64: Bluetooth vs. Wi-Fi in networking
Page 65 and 66: A Complex Example• Both Bluetooth
Page 67 and 68: Too Many Remote Controls?SecurityHV
Page 69 and 70: Network SummaryType ofNetworkWirele
Page 71 and 72: Range10 km1 km3G100 m802.11b,g802.1
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2. Introduction

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