From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mail-wm0-x22b.google.com ([2a00:1450:400c:c09::22b]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1atHEF-0001cm-EE for wireless-regdb@lists.infradead.org; Thu, 21 Apr 2016 16:13:20 +0000 Received: by mail-wm0-x22b.google.com with SMTP id n3so141390098wmn.0 for ; Thu, 21 Apr 2016 09:12:57 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=date:message-id:from:to:cc:subject:in-reply-to:references :user-agent:mime-version:content-transfer-encoding; bh=MH/lJeFFqfKBjFR3gPgjE2lxQ+eobPIlS/Ok+2utVn8=; b=umojAFkDrp58IpMqHlpBWhcEBC2P8DnWVVRnScG6gn7kb7zIYf5f7jUAK22pUxR6GO UwDotNkIiRj9sDAd+pSqz+K8AZh4ac6RQx1UeBbpjzWjzNiAwegbrs1rFrmOkebBtp+z 4AkZ3fDEwOxHhlv9/MkHov3roXuh004fBIJzMALQekOt1zsrSnyhT85Vyccxq1L/VgBi SPuV+U39MpQYAFIlTgvJiIV0Q83fXgH60cJPZ+9aaRwfd2hbnRsAGpxXXnteyI2jP0dp I4T2Y+nJSe3oheqACog9RAuiA3pTroCQyvC0e90QwcjX/1VztP9iG4VMZow6VyxoC6ds FCBg== Date: Thu, 21 Apr 2016 19:12:53 +0300 Message-ID: <87fuuf54ai.wl-bordjukov@gmail.com> From: Petko Bordjukov In-Reply-To: <20160421140721.GB95003@ubuntu-hedt> References: <1461113043-30102-1-git-send-email-bordjukov@gmail.com> <20160421140721.GB95003@ubuntu-hedt> MIME-Version: 1.0 (generated by SEMI-EPG 1.14.7 - "Harue") Subject: Re: [wireless-regdb] Updates for the regulatory rules for Bulgaria List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: multipart/mixed; boundary="===============5347999149906510015==" Sender: "wireless-regdb" Errors-To: wireless-regdb-bounces+johannes=sipsolutions.net@lists.infradead.org To: Seth Forshee Cc: Petko Bordjukov , wireless-regdb@lists.infradead.org List-ID: --===============5347999149906510015== Content-Type: multipart/signed; boundary="pgp-sign-Multipart_Thu_Apr_21_19:12:48_2016-1"; micalg=pgp-sha256; protocol="application/pgp-signature" Content-Transfer-Encoding: 7bit --pgp-sign-Multipart_Thu_Apr_21_19:12:48_2016-1 Content-Type: text/plain; charset=US-ASCII On Thu, 21 Apr 2016 17:07:21 +0300, Seth Forshee wrote: > This is almost certainly because these frequencies require transmit > power control. We drop the TX power limits by half (i.e. 3 dB) when TPC > is required on account of not supporting TPC. I was under the impression that the underlying kernel infrastructure had support for TPC. What I am observing is that hostapd automatically includes the Power Constraint IE in beacons sent out on any channel with DFS enabled. The default transmit power reduction is 3dBm. This means that the TX power of any clients would be limited to 3dBm below the TX power of the AP even though it's not required. Would there be any merit in providing additional information regarding the TX power and the target average TX power reduction for the system when TPC is supported? > > WAS/RLANs 5150-5250 MHz > > 200 mW maximum mean e.i.r.p. > > 10 mW/MHz maximum spectral density of the mean e.i.r.p. > > If this range doesn't require TPC then it could be bumped up to 200 mW > (23 dBm). Yes, the CRC's list explicitly states that TPC is required in the 5250-5350 MHz and 5470-5725 MHz bands and there's no further comments on the 5150-5250 MHz band. EN 301 893 has the notes below for the 5150-5250 MHz band that could have lead to the 3 dBm drop though, maybe linked to the AUTO-BW flag? > NOTE 1: The applicable limit is 20 dBm, except for transmissions whose nominal > bandwidth falls completely within the band 5 150 MHz to 5 250 MHz, in which > case the applicable limit is 23 dBm. > > NOTE 2: The applicable limit is 7 dBm/MHz, except for transmissions whose > nominal bandwidth falls completely within the band 5 150 MHz to 5 250 MHz, in > which case the applicable limit is 10 dBm/MHz. I changed the TX power values to mW to be consistent with what is stated in the CRC's list. I'll resubmit the patch with the values in dBm and with the 3 dBm drop for the 5250-5350 MHz and 5470-5725 MHz bands. --pgp-sign-Multipart_Thu_Apr_21_19:12:48_2016-1 Content-Type: application/pgp-signature Content-Transfer-Encoding: 7bit Content-Description: OpenPGP Digital Signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iQIcBAABCAAGBQJXGPwAAAoJECq9VKOh1QeK0UsP/j+KkNNd902aix0QsxX5wbmF m5rIQx9MGsTSe3OP6DNysOd/Dltmd1+a/UtrRXQV0ceAAneJVZmApFVkwfqS9y3S tn+/f7jKn6UhQv/wQB7ED9+4MPlXZL7YMMbMVFYuHGG1p5P0BK0G6TwJ9XTFNIlt jcNx58pZ6Pl6oYwEZe5a5MVzGiu6+XkGk3Wpz4Tz4di4b+F5m7h8nZ8L1boL6I/Q HuUp0JuSJrZGLZxOzU/ds/kOyVDQFwE6JSm3ftSZgqbVyF0pNbleaCib4k2scqLx Tpp23WoC08ZX/x0GGh/IMR6B8zVI6DJZJAq2LQt2JpZwXyVk/35mBHasgG7Q9Wp2 Z2o6945MRw9ccwu07UXheMswhBh1ZOR4U+QP6lry8QEflU+ml28b4yzxJZHGnOtr poayxsee6T+Ox7GJUIGs9la6SF880fBUcOSMtr66IJHvQbsCHN4EXW1Hl1GoWbBn 3iisjbiK4DHtyUvsA7GClBczS5ZHIW2c1umk2gN+Lw/32M8Y53XDMe8j2ofpqzx3 oj7dy0V0JjFq6UBt8nA70AICWuexltraz7VEd+1YYx8evIwgrO42vnI1hy+CxZCK hPXvkUVbr/QkdGO+uxPMwe/cOiak/MSyVegrHooYHaESX6ynJNZ6Zn+LjH8Jc3Zr MaCt74QV4t5WdfVyumQz =wYFd -----END PGP SIGNATURE----- --pgp-sign-Multipart_Thu_Apr_21_19:12:48_2016-1-- --===============5347999149906510015== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Disposition: inline Content-Transfer-Encoding: 8bit _______________________________________________ wireless-regdb mailing list wireless-regdb@lists.infradead.org http://lists.infradead.org/mailman/listinfo/wireless-regdb --===============5347999149906510015==--