DLP

1
DLP Direct Link Protocol
Side Link Protocol ad-hoc group Menzo
Wentink Keith Amann Ed Reuss Srini Kandala Wim
Diepstraten
2
DLP Protocol
Frames can all be encrypted

• QSTA-1 sends a DLP Action Request frame to be
  forwarded by AP if destination is present.
• Else AP respond with DLP Action Response with
  status Not Present
• Or with Status Not Capable if destination is a
  Legacy station.
• Body format DA,SA, Capability fields, ltSupported
  ratesextended capability elements gt
• QSTA-2 responds with a DLP Action Response frame,
  to be forwarded by AP.
• Frame Body is empty and Status Denied when
  station dont want to be engaged in the DLP
• Else Action Status is successful and body
  format is DA,SA, Capability fields, ltSupported
  ratesextended capability elements gt
• A non-successful response will have a Action Body
  format DA,SA

3
DLP contd

• Following the wake-up sequence, the Probing
  mechanism is the initiators choice
• Stations can start direct data exchange.
• Station is assumed to have provisions for dynamic
  rate and presence status changes.
• Or a directed Probe Response.
• Which may contain a (to be defined) arbitrary
  length Information element
• And optional additional Security Protocol
  messages to be defined by TGi.
• When encryption is enabled, then the DLP Action
  frames are assumed to be encrypted.
• Stations stay awake for a no-Activity timeout
  period following the last transmitted frame.
• Defined in the MIB as a 2 Byte value in Time
  Units (kus).
• Default 500 TU