On Sun, Aug 05, 2001 at 09:38:32AM +0800, ½±Â§®¤ wrote:
>
> 1. I understand that Aironet can transmit and receive packets at multiple
> speed based on different modulation scheme at 2.4 GHz. My question is that
> suppose I have one station in 1 Mbps, one in 2 Mbps, one in 5.5 Mbps, and
> one in 11 Mbps. How did the AP knows the correct speed to transmit for each
> STA without duplicating the same message. If an AP did not know the correct
> speed for each station, it seems that the same message will be duplicated 4
> times and transmitted in different modulation schemes. This 4-time

To associate to an AP, the client must support the AP's basic rate.

The AP sends out broadcasts using the basic rate.
This basic rate maybe the same as the AP's maximum supported rate, i.e.
you can have the AP set for a maximum rate of 11mbit/sec, and a basic
rate of 11mbit/sec.

> 2. I know that STA will wait for RTS or ACK back from the AP while STA
> issues the CTS to AP. My question is that "is this process (CTS/RTS) a
> symmetrical process?". I meant that does STA go through the same CTS/RTS
> procedure to send CTS request to STA? or it is simply a CTS/RTS master
> waiting to reply the slave's (STA) requests?

All radios involved can use both RTS/CTS if they are configured to do so.

Jim

-- 
     |          |         Jim Veneskey
    :|:        :|:        Software Test Engineer
   :|||:      :|||:       320 Springside Drive Suite 350, Akron OH 44333
.:|||||||:..:|||||||:.    Email: jvenecisco.com
_______________________________________________
Aironet mailing list  -  Aironetcsl.cse.ucsc.edu
http://csl.cse.ucsc.edu/mailman/listinfo/aironet

• Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]