Luckily, the "harmonized standard" is by law, one and only one for DFS conformance across all European Community countries. There are no differences in pulse patterns, non occupancy, channel close time, etc etc. across EU countries. I have not gotten any indication from anywhere that there will be deviation on a country by country basis in Europe affecting DFS rules. BTW, as of June 30, 2010, EN301 893 V1.5.1 became mandatory. All devices placed on the EC market must meet those latest pulse patterns per V1.5.1. tks, Michael Green Atheros Communications, Inc. mgreen at atheros.com Desk: +1-781-400-1491 Mobile: +1-508-380-4921 -----Original Message----- From: Johannes Berg [mailto:johannes@xxxxxxxxxxxxxxxx] Sent: Monday, January 31, 2011 4:44 PM To: Luis R. Rodriguez Cc: Michael Green; linux-wireless; wireless-regdb at lists.infradead.org; Kathy Giori; David Quan; John W. Linville Subject: Re: Review of EN 301 893 1.5.1 and 1.6.1 changes Note: this email is on a public list. If you can't tell that from the Cc line of the email, I'm not sure you should be working in this field. If you think I'm mocking you, maybe I am :P On Mon, 2011-01-31 at 13:33 -0800, Luis R. Rodriguez wrote: > FYI - European conformance spec for 5 GHz Radio LANs has some slight > modifications which Johannes has pointed out which we have reviewed > today in consideration for our new DFS design. The skinny is that our > implementation of using 3 regions are OK and we will move forward with > that. I just fear that will not allow us to keep manoeuvring effectively in the future, because then we need to change all the implementations, potentially old ones, rather than just updating the database. I wasn't so much thinking of the pulse patterns though as the other timings like the airtime allowed to use before moving onto a new channel. johannes
