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WiFi Tunneled Direct Link Set-up - TDLS brief

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WiFi Alliance, Tunneled Direct Link Set-up (TDLS) key features in 1 slide...

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WiFi Tunneled Direct Link Set-up - TDLS brief

  1. 1. WiFi – TDLS (Main features) Dr. Thierry Lestable
  2. 2. TDLS: Implicit Concurrent Access between AP and Direct Link Tunneled Direct Link Set-up (TDLS) No requirement for AP to be TDLS aware TDLS Frames encapsulated in IP Packets AP AP Web AP is ‘Blind’ w.r.t TDLS on-going RGW TDLS AP TDLS: 11g / 11n TDLS: Channel Switching (single band case) Base Channel 11g AP 2,4GHz 11n AP Traffic Offload & increased DIRECT Transmission capability TDLS: Channel Switching - Band Steering (multi-band case) Base Channel Base Channel AP AP TDLS TDLS initiator & responder are thus still fully connected to AP AP can set ‘TDLS Prohibited’ in his BEACON NO NEED FOR SPECIAL FUNCTIONALITY IN THE AP. WORKS WITH ALL EXISTING APs TDLS AP Transparent transmission via AP AP AP AP TDLS 2,4GHz Off Channel AP Traffic Offload & decrease congestion @2.4GHz (STAs are registered ‘Sleeping’ towards AP DL Traffic is being buffered during TDLS) STAs periodically switch back to ‘Base Channel’: - listen to AP beacon - communicate with BSS AP can advertise ‘TDLS Channel Switching Prohibited ‘ Dr.Thierry Lestable - 2013 Base Channel 2,4GHz TDLS 5GHz Off Channel AP Traffic Offload & leave congested band @2.4GHz to 5GHz (STAs are registered ‘Sleeping’ towards AP DL Traffic is being buffered during TDLS) STAs periodically switch back to ‘Base Channel’: - listen to AP beacon - communicate with BSS AP can advertise ‘TDLS Channel Switching Prohibited ‘

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