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Article:
  When Is 54 Not Equal to 54? A Look at 802.11a, b, and g Throughput
Subject:   question about cts-to -self
Date:   2003-09-08 20:35:43
From:   anonymous2
In IEEE802.11g specification,cts-to -self mechanism is described as "when a node want to distribute NAV information,the node may first transmit a cts frame with the RA address equal to its own mac address and with a duration time that protect the pending transmition".
From this article,i don't understand why the author said"Once the first 802.11b station associates with an 802.11g access point, however, protection is required. The minimal protection contemplated by the standard is that 802.11g stations will protect the fast 802.11g frame exchange with a slow Clear To Send (CTS) frame that locks out other stations access to the medium".
I don't completely understand cts-to-self mechanism.Would you please explain it to me?
my email:stella.li@netac.com