> In a infrastructure network,
> suppose a station s1 wants to communicate with s2 belonging to same
> AP,
...
> whether the control signals RTS, CTs should pass through AP


Raghu.

In an 802.11 infrastructure network, the two stations HAVE to
communicate through the AP. There is no provision in the protocol for
two stations to talk directly to each other even when they are part of
the same network.

So if s1 wants to send data to s2, it has to first send data to the AP
and the AP will send data to s2. Even if s1 decides to use RTS/CTS to
protect its transfer, it will only exchange the RTS/CTS frames with
the AP. s2 won't even know that the data came from within the network.

The 802.11e (QoS enhancements) spec updates the MAC protocol and
allows for two stations to directly communicate with each other but
only if the AP allows it. However, none of the currently deployed
systems support this feature.

Regards,
- Harshal




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