José Manuel Macías Luna
Marseille, February 6th 2008
Applications over Wi-Fi
● Many questions to respond, before starting:
● Other issues arraised:
• What Wi-Fi standards to use for a testbed?
• Technologies like UMA (Unlicensed Mobile Access)
• Is this our job ? (I mean, TF-mobility alone?)
● Not considering these other issues:
• Handover between APs
• Authentication / Reauthentication
Applications to consider
● Reduced the list to these two:
● VoIP (just audio)
● Videoconference (audio and video)
Excluded for the moment:
● Video (or audio) streaming
● Many forms of video streaming to consider
● Presence and Instant Messaging
● Probably out of scope (minimum requirements, except for
recommendations we can provide for (un)filtering certain ports)
● Electronic whiteboards
● Less related with a mobile environment (or maybe not?)
● Collaboration applications (for instance: collaborative edition, desktop
● Any other you can tell?
● My idea is to test only standard (not in the sense of popular) applications
Devices... what devices?
● A laptop computer...
• More computing power: better codecs are used
• The most common situation right now
• More tools to play with...
● wi-fi enabled phones ?
• it depends on the device and OS
• Less computing power and more power consumption
• worse (simpler) codecs are used
• Windows mobile and Symbian being the more popular
• Some applications already there...
• iPhone and Android to be playing in a near future
• Not to forget the UMA-enabled phones (further slide)
• “skype phones”
• handhelds and internet tablets
• other “toys”:
• Nintendo DS, PSP, and many more can do wi-fi and even VoIP, but
these gadgets are less common, or less people use them...
• Very common in the academic world, and supported by many vendors
• SIP is commonly used as the signaling protocol for many VoIP
• Uses many different codecs