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WPA (Wi-Fi Protected Access) WPA and WPA2 have two standards, is a protected wireless computer network (Wi-Fi) security system, which should be the first generation of systems researchers Wired Equivalent Privacy (WEP) in the found several serious weaknesses arising.
Voice over Wi-Fi VON September 2005 Fanny Mlinarsky One Device… Indoors and Out UMTS GSM CDMA RFID WCDMA Wi-Fi WiMax UWB Bluetooth Fiber DSL Cable Slide 2 VoWi-Fi Handset Market • In 2009 73% of VoIP user will have Wi-Fi phones; 66M cell/Wi-Fi phones (In-Stat 8/05) • 2010 revenue for the European VoWi-Fi market will be $1.99B (Frost & Sullivan) Slide 3 Cell Wi-Fi Convergence • 3GPP – GAN / UMA – IMS • MobileIGNITE • IPCC Wireless Wireline Convergence • NTT DoCoMo FOMA • SCCAN • IEEE 802.21 •GAN = generic access network •UMA = unlicensed mobile access •IMS = internet multimedia subsystem • IEEE 802.11u •MobileIgnite = Mobile Integrated Go-to-Market Network IP Telephony Experience •IPCC = International Packet Communications Consortium •FOMA = freedom of mobile multimedia access •SCCAN = seamless converged communication across networks Slide 4 Voice Standards Cellular W- GSM UMTS CDMA CDMA Cell Handover UMA/ proprietary 802.21 IMS GAN Wi-Fi VoWi-Fi VoWi-Fi VoWi-Fi WCC 802.11 Home Enterp. e,r,k,u,t Slide 5 IEEE 802.11 Standards for VoWi-Fi • Minimize bursty packet loss due to roaming 802.11r Fast Roaming 802.11k Radio Resource Measurement (RRM) 802.11i Pre-authentication • Manage power consumption 802.11e Power-save • Maintain isochronous nature of voice packet streams by controlling delay, jitter and packet loss 802.11e Quality of Service (QoS) prioritization Slide 6 Wi-Fi Alliance Certification Roadmap 2004 1H05 2H05 2006 2007+ 802.11a+b+g (basic wireless LAN IEEE Specs) Core Wi-Fi 802.11h+d Functionality 802.11k .11r .11n WMM (802.11e-based QoS) 802.11e WMM Scheduled Access Multimedia WMM Power Save [CE Framework] Enablers Wi-Fi Protected Access (WPA) (802.11i-based Security using TKIP) WPA2 (full 802.11i including AES) 802.11i Extended EAP (Enterprise) Public Access Security Simple Configuration Wi-Fi Cellular Convergence (WCC) - RF Voice & Data WCC – Device Class Voice over Wi-Fi Convergence 6/20/05 IEEE ratification Slide 7 IEEE Roadmap 1Q06 2Q06 3Q06 4Q06 1Q07 Q07 3Q07 4Q07 802.11k Radio Measurement 802.11r Fast Roaming 802.11n High Speed 802.11p Vehicle 802.11T Test 802.11u Interworking 802.11s Mesh IEEE Standards Board http://grouper.ieee.org/groups/802/11/802.11_Timelines.htm Approval (expected) 03/03/05 Slide 8 How Does Motion Effect Packet Based Communications? Slide 9 Wireless Data Communications Packets Over Air to Mobile Users Data Communications Data Wireless Test Test Voice Packet Loss Video Signal Strength Jitter Frequency Latency Power Throughput Channel Emulation Slide 10 Summary • Voice is a demanding application and will stretch capabilities of WiFi • Complex standards are emerging to support VoWiFi • Success of VoWiFi depends on robustness and capacity of equipment built to these new standards • Thorough testing will ensure success of this emerging market Slide 11
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