1. Fixing the locked legacy slot condition
November 2001
September 2002
Fixing the locked legacy slot condition
Matthew Fischer
Broadcom

2. September 2002
Problem text –
In the case of a network composed of only short slot-time devices, but with knowledge of a neighboring co-channel BSS having longer slot-time traffic, the AP shall switch to the longest slot-time of the overlapping BSSs.

3. September 2002
Motion
Move to modify the last sentence of the second to last paragraph of by changing both occurrences of “BSS” to “legacy BSS” and adding “until no indication of the presence of the overlapping legacy BSS has been detected for a period of 30 seconds” to the end of the sentence.

4. September 2002
Amended text
In the case of a network composed of only short slot-time devices, but with knowledge of a neighboring co-channel legacy BSS having longer slot-time traffic, the AP shall switch to the longest slot-time of the overlapping legacy BSSs until no indication of the presence of the overlapping legacy BSS has been detected for a period of 30 seconds.

5. Effect of motion Causes zero-hop limit to be invoked
September 2002
Effect of motion
Causes zero-hop limit to be invoked
You must directly observe legacy in order to switch to legacy slot
You must limit hops to some finite number if you wish to avoid the locked problem
Zero hops is much simpler to implement than one hop