| Message ID | 20210929172728.7512-1-mans0n@gorani.run (mailing list archive) |
|---|---|
| State | Not Applicable |
| Delegated to: | Johannes Berg |
| Headers | show |
| Series | wireless-regdb: Update regulatory rules for South Korea (KR) | expand |
On Thu, Sep 30, 2021 at 02:27:28AM +0900, Sungbo Eo wrote: > This patch is based on MSIT Public Notification 2020-113 ("Unlicensed Radio > Equipment Established Without Notice"), officially announced on 2021-01-06. > > Extend the last 5 GHz frequency range to 5850 MHz. > > WiFi 6E is now allowed with the following restrictions: > * Indoor: the full 1.2 GHz range, up to 160 MHz bandwidth and 250mW EIRP > * Outdoor: the lower 500 MHz range, up to 160 MHz bandwidth and 25mW EIRP > Here only the former entry is added. > > And also update the regulatory source links. > > Signed-off-by: Sungbo Eo <mans0n@gorani.run> > --- > I have two questions. > > The regulation has one more restriction: > The TX power should not exceed 2.5 mW/MHz > when the frequency range includes the whole or a part of 5230-5250 MHz > and the bandwidth is equal to or less than 40 MHz. > That leads to the followings: > 5230-5250 @ 20 -> 17 dBm > 5210-5250 @ 40 -> 20 dBm > 5170-5250 @ 80 -> 23 dBm > Is it possible to add this rule without lowering the TX power for 80 MHz bandwidth? I've tried to look at the documents, but much of the information appears to be in images where machine translation doesn't work, and I haven't been able to find English versions. Taking the above at face value, I actually get slightly lower EIRP values for a PSD of 2.5 mW/MHz (EIRP = PSD + 10 * log(bandwidth)): 16 dBm for 20 MHz and 19 dBm for 40 MHz. We don't currently have any way to express PSD limits in the database nor a way to express different power limits for different bandwidths, so it's not possible to comply with the PSD limits for 20/40 MHz without also lowering the EIRP for 80 MHz. > And do we need AUTO-BW for 6E channels? I thought it is for merging adjacent frequency ranges. That is correct. Since there are no adjacent rules, AUTO-BW doesn't make sense. Thanks, Seth
On 2021-10-06 23:07, Seth Forshee wrote: > On Thu, Sep 30, 2021 at 02:27:28AM +0900, Sungbo Eo wrote: >> This patch is based on MSIT Public Notification 2020-113 ("Unlicensed Radio >> Equipment Established Without Notice"), officially announced on 2021-01-06. >> >> Extend the last 5 GHz frequency range to 5850 MHz. >> >> WiFi 6E is now allowed with the following restrictions: >> * Indoor: the full 1.2 GHz range, up to 160 MHz bandwidth and 250mW EIRP >> * Outdoor: the lower 500 MHz range, up to 160 MHz bandwidth and 25mW EIRP >> Here only the former entry is added. >> >> And also update the regulatory source links. >> >> Signed-off-by: Sungbo Eo <mans0n@gorani.run> >> --- >> I have two questions. >> >> The regulation has one more restriction: >> The TX power should not exceed 2.5 mW/MHz >> when the frequency range includes the whole or a part of 5230-5250 MHz >> and the bandwidth is equal to or less than 40 MHz. >> That leads to the followings: >> 5230-5250 @ 20 -> 17 dBm >> 5210-5250 @ 40 -> 20 dBm >> 5170-5250 @ 80 -> 23 dBm >> Is it possible to add this rule without lowering the TX power for 80 MHz bandwidth? > > I've tried to look at the documents, but much of the information appears > to be in images where machine translation doesn't work, and I haven't > been able to find English versions. Oops, sorry. I should have prepared it in more convertible format. There's no English version of it, but at least I could find a HWP document file [1] that contains regular tables instead of images. (The URL is from the "attached files" tab in the source link.) You can open it with a dedicated viewer [2] or an online viewer [3]. But those free viewers do not offer conversion to DOC or HTML. (It seems the dedicated one has "print to PDF" feature, though.) I also tried an online convert tool but it failed due to the long processing time... I can send you converted versions myself if you prefer. [1] https://www.law.go.kr/LSW//flDownload.do?flSeq=93728653 [2] https://www.hancom.com/cs_center/csDownload.do [3] https://hwp.polarisoffice.com/ > > Taking the above at face value, I actually get slightly lower EIRP > values for a PSD of 2.5 mW/MHz (EIRP = PSD + 10 * log(bandwidth)): 16 > dBm for 20 MHz and 19 dBm for 40 MHz. I thought log(2.5) equals 0.4? We also have 2.5 mW/MHz * 40 MHz = 100 mW. > We don't currently have any way to > express PSD limits in the database nor a way to express different power > limits for different bandwidths, so it's not possible to comply with the > PSD limits for 20/40 MHz without also lowering the EIRP for 80 MHz. Too bad. :( I'll prepare v2 soon. > >> And do we need AUTO-BW for 6E channels? I thought it is for merging adjacent frequency ranges. > > That is correct. Since there are no adjacent rules, AUTO-BW doesn't make > sense. Okay, thanks! Regards, Sungbo > > Thanks, > Seth >
On Thu, Oct 07, 2021 at 04:18:01AM +0900, Sungbo Eo wrote: > On 2021-10-06 23:07, Seth Forshee wrote: > > On Thu, Sep 30, 2021 at 02:27:28AM +0900, Sungbo Eo wrote: > > > This patch is based on MSIT Public Notification 2020-113 ("Unlicensed Radio > > > Equipment Established Without Notice"), officially announced on 2021-01-06. > > > > > > Extend the last 5 GHz frequency range to 5850 MHz. > > > > > > WiFi 6E is now allowed with the following restrictions: > > > * Indoor: the full 1.2 GHz range, up to 160 MHz bandwidth and 250mW EIRP > > > * Outdoor: the lower 500 MHz range, up to 160 MHz bandwidth and 25mW EIRP > > > Here only the former entry is added. > > > > > > And also update the regulatory source links. > > > > > > Signed-off-by: Sungbo Eo <mans0n@gorani.run> > > > --- > > > I have two questions. > > > > > > The regulation has one more restriction: > > > The TX power should not exceed 2.5 mW/MHz > > > when the frequency range includes the whole or a part of 5230-5250 MHz > > > and the bandwidth is equal to or less than 40 MHz. > > > That leads to the followings: > > > 5230-5250 @ 20 -> 17 dBm > > > 5210-5250 @ 40 -> 20 dBm > > > 5170-5250 @ 80 -> 23 dBm > > > Is it possible to add this rule without lowering the TX power for 80 MHz bandwidth? > > > > I've tried to look at the documents, but much of the information appears > > to be in images where machine translation doesn't work, and I haven't > > been able to find English versions. > > Oops, sorry. I should have prepared it in more convertible format. > There's no English version of it, but at least I could find a HWP document > file [1] that contains regular tables instead of images. (The URL is from > the "attached files" tab in the source link.) > > You can open it with a dedicated viewer [2] or an online viewer [3]. But > those free viewers do not offer conversion to DOC or HTML. (It seems the > dedicated one has "print to PDF" feature, though.) > > I also tried an online convert tool but it failed due to the long processing > time... I can send you converted versions myself if you prefer. > > [1] https://www.law.go.kr/LSW//flDownload.do?flSeq=93728653 > [2] https://www.hancom.com/cs_center/csDownload.do > [3] https://hwp.polarisoffice.com/ > > > > > Taking the above at face value, I actually get slightly lower EIRP > > values for a PSD of 2.5 mW/MHz (EIRP = PSD + 10 * log(bandwidth)): 16 > > dBm for 20 MHz and 19 dBm for 40 MHz. > > I thought log(2.5) equals 0.4? We also have 2.5 mW/MHz * 40 MHz = 100 mW. Yeah ... I did the math again and your numbers are right, guess I made a mistake the first time. > > We don't currently have any way to > > express PSD limits in the database nor a way to express different power > > limits for different bandwidths, so it's not possible to comply with the > > PSD limits for 20/40 MHz without also lowering the EIRP for 80 MHz. > > Too bad. :( I'll prepare v2 soon. > > > > > > And do we need AUTO-BW for 6E channels? I thought it is for merging adjacent frequency ranges. > > > > That is correct. Since there are no adjacent rules, AUTO-BW doesn't make > > sense. > > Okay, thanks! > > Regards, > Sungbo > > > > > Thanks, > > Seth > > > > _______________________________________________ > wireless-regdb mailing list > wireless-regdb@lists.infradead.org > http://lists.infradead.org/mailman/listinfo/wireless-regdb
diff --git a/db.txt b/db.txt index 6e8dbef..31052cf 100644 --- a/db.txt +++ b/db.txt @@ -862,15 +862,20 @@ country KP: DFS-JP (5490 - 5630 @ 20), (30), DFS (5735 - 5815 @ 20), (30) +# Source: +# https://www.law.go.kr/LSW//admRulLsInfoP.do?chrClsCd=&admRulSeq=2100000196972 +# https://www.law.go.kr/LSW//admRulLsInfoP.do?chrClsCd=&admRulSeq=2100000196973 +# https://www.law.go.kr/LSW//admRulLsInfoP.do?chrClsCd=&admRulSeq=2100000196974 country KR: DFS-JP # ref: https://www.rra.go.kr (2400 - 2483.5 @ 40), (23) (5150 - 5250 @ 80), (23), AUTO-BW (5250 - 5350 @ 80), (20), DFS, AUTO-BW (5470 - 5725 @ 160), (20), DFS - (5725 - 5835 @ 80), (23) - # 60 GHz band channels 1-4, - # ref: http://www.law.go.kr/%ED%96%89%EC%A0%95%EA%B7%9C%EC%B9%99/%EB%AC%B4%EC%84%A0%EC%84%A4%EB%B9%84%EA%B7%9C%EC%B9%99 + (5725 - 5850 @ 80), (23) + # 6 GHz band + (5925 - 7125 @ 160), (24), NO-OUTDOOR, AUTO-BW + # 60 GHz band channels 1-4 (57000 - 66000 @ 2160), (43) country KW: DFS-ETSI
This patch is based on MSIT Public Notification 2020-113 ("Unlicensed Radio Equipment Established Without Notice"), officially announced on 2021-01-06. Extend the last 5 GHz frequency range to 5850 MHz. WiFi 6E is now allowed with the following restrictions: * Indoor: the full 1.2 GHz range, up to 160 MHz bandwidth and 250mW EIRP * Outdoor: the lower 500 MHz range, up to 160 MHz bandwidth and 25mW EIRP Here only the former entry is added. And also update the regulatory source links. Signed-off-by: Sungbo Eo <mans0n@gorani.run> --- I have two questions. The regulation has one more restriction: The TX power should not exceed 2.5 mW/MHz when the frequency range includes the whole or a part of 5230-5250 MHz and the bandwidth is equal to or less than 40 MHz. That leads to the followings: 5230-5250 @ 20 -> 17 dBm 5210-5250 @ 40 -> 20 dBm 5170-5250 @ 80 -> 23 dBm Is it possible to add this rule without lowering the TX power for 80 MHz bandwidth? And do we need AUTO-BW for 6E channels? I thought it is for merging adjacent frequency ranges. --- db.txt | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-)