More on wireless networks
Graham Klyne <GK@Dial.pipex.com> Wed, 30 June 1999 20:40 UTC
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Date: Wed, 30 Jun 1999 21:33:42 +0100
To: ietf@ietf.org
From: Graham Klyne <GK@Dial.pipex.com>
Subject: More on wireless networks
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I have been investigating further, and offer the following tentative observations: CAVEAT: I'm not expert in this area, just interested. (I'm sure the experts here will correct my errors and misconceptions :-) There are at least four different possible (and incompatible) systems in circulation using the 2.4GHz frequency band (there are actually many more, but I'm focusing on four that seem to be of current or historical interest): - Roamabout/Wavelan DS Historically used for IETF meetings, I think. - Roamabout/Wavelan FH Is this one of the options provided for Oslo? I thought so, but on re-reading the options posted I'm not so sure. (Can someone confirm/deny this?) - 802.11 DS The 802.11 DS variant; this seems to be problematic to deploy, being less scalable that FH. Some vendors claim that aggressive FH gives better performance than the basic DS. There is apparently a variant of this that runs at about 10MBps, but not yet ratified as an IEEE standard. - 802.11 FH This seems to be the popular option (with vendors) at the moment for performance in the 1-3Mbps range. Different products claim different bandwidth capabilities. For a comparative test of 802.11 interoperability, see <http://www.networkcomputing.com/1006/1006r2side1.html> What I'd like to know right now is this: will a DEC RoamAbout FH card work in the Oslo environment? #g
- More on wireless networks Graham Klyne
- More on wireless networks Graham Klyne