From: Robert Currey (R.P.Currey_at_leeds.ac.uk)
Date: 30/05/03 16:33
I think we should have something that identifies tech talk for those
that would like to turn off at that point.
I had hoped we could accommodate many networks ie many ESSIDs. Not
specifically for sponsorship but for pschological reasons. I would
like node owners to feel free to do what they like and yet still be
accommodated in the hopping wireless medium.
But it would be difficult to start with - I currently see no way of
getting one card to speak to two networks (on same channel.) In
theory it seems reasonable (to me) but maybe the drivers have to be
re-written or this limitation (feature) is coded in the firmware.
The use of non-ovelapping channels I foresaw as maintaining even
density among different power strengths. If we have a street with
nearly everyone using wireless it is in our interest not to have
great signal strength and use a hopping routing algorithm to get
packets where they want to go; this is to reduce collisions. ie
whisper so that only a few neighbours can hear and can pass the
message on, instead of shouting so everyone can hear but create
bedlam in the process.
So I would suggest one band for antenna-less nodes, one band for omni
antenna and one band for point to point. The logic being to keep the
number of neighbours hearing from you constant. Ie add an antenna
that doubles distance = four times number possible node coverage
therefore a quarter of the nodes should be on this band.
I'm aware that I'm being pretty unclear, shall refine eventually.
Robert
------------------------------------------------
Robert Currey
Computing Officer
School of Biochemistry and Molecular Biology
University of Leeds
+44 (0)113 3433033
This archive was generated by hypermail 2.1.7 : 30/05/03 16:33 BST