Subject: [manet] IEEE802.11

From: [email-masked]
Date: Thu, 3 Feb 2005 14:01:30 +0100

Hi all,

Here is probably a dumb question but can anybody tell me if in infrastructure mode the access point must compete with other stations before relaying to its destination a frame just received ?

More precisely, let's consider a 802.11 network with 2 stations and one access point (every equipment "see" each other) :

S1 --- AP --- S2

At time t0 : S1 needs to send a frame to S2. Before doing this, S1 uses DCF to access the air interface.
At time t1 : S1 sends its frame to AP.

Now, when the AP has finished receiving the frame from S1, does it need to use DCF to access the air interface and to relay this frame to S2 ?
Or can the AP immediately relay the frame to S2 without competing for access (using DCF) ?

	Raphaël MASSIN

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