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Voice over Wi-Fi

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					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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Description: 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.