On Tue, 2010-05-25 at 17:14 +0200, Kurt Garloff wrote: > > OK, new suggestion. > > 8<------------------------------------------------------------------------ > > # Data from "Frequenznutzungsplan" (as published in April 2008), downloaded from > # http://www.bundesnetzagentur.de/cae/servlet/contentblob/38448/publicationFile/2659/Frequenznutzungsplan2008_Id17448pdf.pdf > # For the 5GHz range also see > # http://www.bundesnetzagentur.de/cae/servlet/contentblob/38216/publicationFile/6579/WLAN5GHzVfg7_2010_28042010pdf.pdf > # The values have been reduced by a factor of 2 (3db) for non TPC devices > # (in other words: devices with TPC can use twice the tx power of this table). > # Note that the docs do not require TPC for 5150--5250; the reduction to > # 100mW thus is not strictly required -- however the conservative 100mW > # limit is used here as the non-interference with radar and satellite > # apps relies on the attenuation by the building walls only in the > # absence of DFS; the neighbour countries have 100mW limit here as well. > > country DE: > # entries 279004 and 280006 > (2400 - 2483.5 @ 40), (N/A, 100 mW) > # entry 303005 > (5150 - 5250 @ 40), (N/A, 100 mW), NO-OUTDOOR > # entries 304002 and 305002 > (5250 - 5350 @ 40), (N/A, 100 mW), NO-OUTDOOR, DFS > # entries 308002, 309001 and 310003 > (5470 - 5725 @ 40), (N/A, 500 mW), DFS Ok, that looks fine to me. > Can we actually put several entries covering the same frequency range? > Then we could put 200mW for DFS and 100mW for non-DFS. > This would also address the next issue you raise ... I think you're confusing DFS and TPC requirements? Anyway, no, we can't right now. > > Also note that there are different requirements depending on the channel > > bandwidth, which will eventually come up in Linux too. But I think for > > that we need the new database format for that ... yet another thing to > > do before we can support 5/10 MHz channels. > > Indeed. For 5150 -- 5350, the spectral power density may not exceed > 10mW/MHz (and overall emitted power in the range per device not 200mW); > this gives a limit of 200mW for 20MHz channels or 100mW if no TPC is > used for 5250 -- 5350. (For 5470--5725 use 5x those values.) > I'm not aware of WLAN devices with narrower channels yet, but if they > come into existence, we'd have to reflect it somehow ... They exist, we just don't support them right now ... I put it on the todo list for now. johannes -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
