[PATCH] wireless-regdb: Update regulatory rules for Sri Lanka (LK)

[PATCH] wireless-regdb: Update regulatory rules for Sri Lanka (LK)

[Mohamed Aashif]

Update Sri Lanka regulatory domain based on the RTTE Type Approval
Rules 2020 from the Telecommunications Regulatory Commission of
Sri Lanka (TRC).

Source: https://www.trc.gov.lk/content/files/licensing/RTTE_GAZETTE-English.pdf

Key changes:
- Change DFS region from FCC to ETSI (document references ETSI
  standards EN 300 328 and EN 301 893 as the applicable radio
  interface standards)
- 2.4 GHz: expand to 2400-2483.5 MHz at 200 mW (was 2402-2482 at 20 dBm)
- 5150-5350 MHz: 200 mW with DFS
- 5470-5725 MHz: 1000 mW with DFS
- 5725-5875 MHz: 1000 mW with DFS

Signed-off-by: Mohamed Aashif <maashif011@gmail.com>
---
 db.txt | 14 ++++++++------
 1 file changed, 8 insertions(+), 6 deletions(-)

diff --git a/db.txt b/db.txt
index fdc2c13..d265176 100644
--- a/db.txt
+++ b/db.txt
@@ -1058,12 +1058,14 @@ country LI: DFS-ETSI
 	# 60 GHz band channels 1-4 (ETSI EN 302 567)
 	(57000 - 66000 @ 2160), (40)
 
-country LK: DFS-FCC
-	(2402 - 2482 @ 40), (20)
-	(5170 - 5250 @ 20), (17)
-	(5250 - 5330 @ 20), (24), DFS
-	(5490 - 5730 @ 20), (24), DFS
-	(5735 - 5835 @ 20), (30)
+# Source:
+# https://www.trc.gov.lk/content/files/licensing/RTTE_GAZETTE-English.pdf
+# Sri Lanka RTTE Type Approval Rules 2020, Table 6 - Wideband Data Transmission
+country LK: DFS-ETSI
+	(2400 - 2483.5 @ 40), (200 mW)
+	(5150 - 5350 @ 160), (200 mW), DFS
+	(5470 - 5725 @ 160), (1000 mW), DFS
+	(5725 - 5875 @ 80), (1000 mW), DFS
 
 # Source:
 # http://lca.org.ls/images/documents/lesotho_national_frequency_allocation_plan.pdf
-- 
2.54.0

Re: [PATCH] wireless-regdb: Update regulatory rules for Sri Lanka (LK)

[Ping-Ke Shih]

Mohamed Aashif <maashif011@gmail.com> wrote:
>
> Update Sri Lanka regulatory domain based on the RTTE Type Approval
> Rules 2020 from the Telecommunications Regulatory Commission of
> Sri Lanka (TRC).
>
> Source: https://www.trc.gov.lk/content/files/licensing/RTTE_GAZETTE-English.pdf
>
> Key changes:
> - Change DFS region from FCC to ETSI (document references ETSI
>   standards EN 300 328 and EN 301 893 as the applicable radio
>   interface standards)
> - 2.4 GHz: expand to 2400-2483.5 MHz at 200 mW (was 2402-2482 at 20 dBm)
> - 5150-5350 MHz: 200 mW with DFS

TPC is not supported, so 5250-5350 should be 20dBm (100mW) as description of
ESTI EN 301 893. Since we can extend adjacent channels, add AUTO-BW attribute
to them.

> - 5470-5725 MHz: 1000 mW with DFS

By source, 1000mW is only for outdoor application. Should be 500mW.
Then, it also satisfies the limit 27 dBm defined by ESTI EN 301 893 without TPC.

> - 5725-5875 MHz: 1000 mW with DFS

I think the range should be reference to ETSI EN 302 502, which EIRP level to a
level not exceeding 24 dBm for ChS = 20 MHz and 21 dBm for ChS = 10 MHz.
Then, this rule should be 24 dBm.

However the source points to standard EN 301 893 (wrongly?).

>
> Signed-off-by: Mohamed Aashif <maashif011@gmail.com>
> ---
>  db.txt | 14 ++++++++------
>  1 file changed, 8 insertions(+), 6 deletions(-)
>
> diff --git a/db.txt b/db.txt
> index fdc2c13..d265176 100644
> --- a/db.txt
> +++ b/db.txt
> @@ -1058,12 +1058,14 @@ country LI: DFS-ETSI
>         # 60 GHz band channels 1-4 (ETSI EN 302 567)
>         (57000 - 66000 @ 2160), (40)
>
> -country LK: DFS-FCC
> -       (2402 - 2482 @ 40), (20)
> -       (5170 - 5250 @ 20), (17)
> -       (5250 - 5330 @ 20), (24), DFS
> -       (5490 - 5730 @ 20), (24), DFS
> -       (5735 - 5835 @ 20), (30)
> +# Source:
> +# https://www.trc.gov.lk/content/files/licensing/RTTE_GAZETTE-English.pdf
> +# Sri Lanka RTTE Type Approval Rules 2020, Table 6 - Wideband Data Transmission
> +country LK: DFS-ETSI
> +       (2400 - 2483.5 @ 40), (200 mW)
> +       (5150 - 5350 @ 160), (200 mW), DFS
> +       (5470 - 5725 @ 160), (1000 mW), DFS
> +       (5725 - 5875 @ 80), (1000 mW), DFS
>
>  # Source:
>  # http://lca.org.ls/images/documents/lesotho_national_frequency_allocation_plan.pdf
> --
> 2.54.0
>
>

[PATCH v2] wireless-regdb: Update regulatory rules for Sri Lanka (LK)

[Mohamed Aashif]

Update Sri Lanka regulatory domain based on the RTTE Type Approval
Rules 2020 from the Telecommunications Regulatory Commission of
Sri Lanka (TRC).

Source: https://www.trc.gov.lk/content/files/licensing/RTTE_GAZETTE-English.pdf

Key changes:
- Change DFS region from FCC to ETSI (document references ETSI
  standards EN 300 328 and EN 301 893 as the applicable radio
  interface standards)
- 2.4 GHz: expand to 2400-2483.5 MHz at 23 dBm
- 5150-5250 MHz: 23 dBm with DFS
- 5250-5350 MHz: 20 dBm with DFS (no TPC, 3 dB reduction per EN 301 893)
- 5470-5725 MHz: 27 dBm with DFS (no TPC, per EN 301 893)
- 5725-5875 MHz: 24 dBm with DFS (per ETSI EN 302 502)

Note: The TRC gazette conflicts internally by allowing 30 dBm for
5725-5875 MHz while citing EN 301 893 (which doesn't cover this band).
Lacking TRC clarification, we conservatively default to the ETSI
EN 302 502 limits (24 dBm).

Signed-off-by: Mohamed Aashif <maashif011@gmail.com>
---
Thanks for the review and catching the TPC and ETSI standard details!

Changes in v2:
- Split 5150-5350 MHz into 5150-5250 MHz (23 dBm) and 5250-5350 MHz
  (20 dBm), adding AUTO-BW to both.
- Applied a 3 dB reduction to 5250-5350 MHz and 5470-5725 MHz (now
  27 dBm) to comply with ETSI limits since TPC is unsupported.
- Capped 5725-5875 MHz at 24 dBm per ETSI EN 302 502.

 db.txt | 15 +++++++++------
 1 file changed, 9 insertions(+), 6 deletions(-)

diff --git a/db.txt b/db.txt
index fdc2c13..12cdafd 100644
--- a/db.txt
+++ b/db.txt
@@ -1058,12 +1058,15 @@ country LI: DFS-ETSI
 	# 60 GHz band channels 1-4 (ETSI EN 302 567)
 	(57000 - 66000 @ 2160), (40)
 
-country LK: DFS-FCC
-	(2402 - 2482 @ 40), (20)
-	(5170 - 5250 @ 20), (17)
-	(5250 - 5330 @ 20), (24), DFS
-	(5490 - 5730 @ 20), (24), DFS
-	(5735 - 5835 @ 20), (30)
+# Source:
+# https://www.trc.gov.lk/content/files/licensing/RTTE_GAZETTE-English.pdf
+# Sri Lanka RTTE Type Approval Rules 2020, Table 2 - Wideband Data Transmission
+country LK: DFS-ETSI
+	(2400 - 2483.5 @ 40), (23)
+	(5150 - 5250 @ 80), (23), DFS, AUTO-BW
+	(5250 - 5350 @ 80), (20), DFS, AUTO-BW
+	(5470 - 5725 @ 160), (27), DFS
+	(5725 - 5875 @ 80), (24), DFS
 
 # Source:
 # http://lca.org.ls/images/documents/lesotho_national_frequency_allocation_plan.pdf
-- 
2.54.0

Re: [PATCH v2] wireless-regdb: Update regulatory rules for Sri Lanka (LK)

[Ping-Ke Shih]

Mohamed Aashif <maashif011@gmail.com> wrote：
>
> Update Sri Lanka regulatory domain based on the RTTE Type Approval
> Rules 2020 from the Telecommunications Regulatory Commission of
> Sri Lanka (TRC).
>
> Source: https://www.trc.gov.lk/content/files/licensing/RTTE_GAZETTE-English.pdf
>
> Key changes:
> - Change DFS region from FCC to ETSI (document references ETSI
>   standards EN 300 328 and EN 301 893 as the applicable radio
>   interface standards)
> - 2.4 GHz: expand to 2400-2483.5 MHz at 23 dBm
> - 5150-5250 MHz: 23 dBm with DFS

This range doesn't need DFS.
Otherwise, looks good to me.

> - 5250-5350 MHz: 20 dBm with DFS (no TPC, 3 dB reduction per EN 301 893)
> - 5470-5725 MHz: 27 dBm with DFS (no TPC, per EN 301 893)
> - 5725-5875 MHz: 24 dBm with DFS (per ETSI EN 302 502)
>
> Note: The TRC gazette conflicts internally by allowing 30 dBm for
> 5725-5875 MHz while citing EN 301 893 (which doesn't cover this band).
> Lacking TRC clarification, we conservatively default to the ETSI
> EN 302 502 limits (24 dBm).
>
> Signed-off-by: Mohamed Aashif <maashif011@gmail.com>

[PATCH v3] wireless-regdb: Update regulatory rules for Sri Lanka (LK)

[Mohamed Aashif]

Update Sri Lanka regulatory domain based on the RTTE Type Approval
Rules 2020 from the Telecommunications Regulatory Commission of
Sri Lanka (TRC).

Source: https://www.trc.gov.lk/content/files/licensing/RTTE_GAZETTE-English.pdf

Key changes:
- Change DFS region from FCC to ETSI (document references ETSI
  standards EN 300 328 and EN 301 893 as the applicable radio
  interface standards)
- 2.4 GHz: expand to 2400-2483.5 MHz at 23 dBm
- 5150-5250 MHz: 23 dBm
- 5250-5350 MHz: 20 dBm with DFS (no TPC, 3 dB reduction per EN 301 893)
- 5470-5725 MHz: 27 dBm with DFS (no TPC, per EN 301 893)
- 5725-5875 MHz: 24 dBm with DFS (per ETSI EN 302 502)

Note: The TRC gazette conflicts internally by allowing 30 dBm for
5725-5875 MHz while citing EN 301 893 (which doesn't cover this band).
Lacking TRC clarification, we conservatively default to the ETSI
EN 302 502 limits (24 dBm).

Signed-off-by: Mohamed Aashif <maashif011@gmail.com>
---
Great, thanks. Removed DFS from 5150-5250 MHz.

Changes in v3:
- Corrected the table caption in the source comment to "Table 2 - Applicable Standards- Wireless"
- Removed DFS flag from 5150-5250 MHz

Changes in v2:
- Split 5150-5350 MHz into 5150-5250 MHz (23 dBm) and 5250-5350 MHz
  (20 dBm), adding AUTO-BW to both.
- Applied a 3 dB reduction to 5250-5350 MHz and 5470-5725 MHz (now
  27 dBm) to comply with ETSI limits since TPC is unsupported.
- Capped 5725-5875 MHz at 24 dBm per ETSI EN 302 502.

 db.txt | 15 +++++++++------
 1 file changed, 9 insertions(+), 6 deletions(-)

diff --git a/db.txt b/db.txt
index fdc2c13..8038f5a 100644
--- a/db.txt
+++ b/db.txt
@@ -1058,12 +1058,15 @@ country LI: DFS-ETSI
 	# 60 GHz band channels 1-4 (ETSI EN 302 567)
 	(57000 - 66000 @ 2160), (40)
 
-country LK: DFS-FCC
-	(2402 - 2482 @ 40), (20)
-	(5170 - 5250 @ 20), (17)
-	(5250 - 5330 @ 20), (24), DFS
-	(5490 - 5730 @ 20), (24), DFS
-	(5735 - 5835 @ 20), (30)
+# Source:
+# https://www.trc.gov.lk/content/files/licensing/RTTE_GAZETTE-English.pdf
+# Sri Lanka RTTE Type Approval Rules 2020, Table 2 - Applicable Standards- Wireless
+country LK: DFS-ETSI
+	(2400 - 2483.5 @ 40), (23)
+	(5150 - 5250 @ 80), (23), AUTO-BW
+	(5250 - 5350 @ 80), (20), DFS, AUTO-BW
+	(5470 - 5725 @ 160), (27), DFS
+	(5725 - 5875 @ 80), (24), DFS
 
 # Source:
 # http://lca.org.ls/images/documents/lesotho_national_frequency_allocation_plan.pdf
-- 
2.54.0

Re: [PATCH v3] wireless-regdb: Update regulatory rules for Sri Lanka (LK)

[Ping-Ke Shih]

Mohamed Aashif <maashif011@gmail.com> wrote：
>
> Update Sri Lanka regulatory domain based on the RTTE Type Approval
> Rules 2020 from the Telecommunications Regulatory Commission of
> Sri Lanka (TRC).
>
> Source: https://www.trc.gov.lk/content/files/licensing/RTTE_GAZETTE-English.pdf
>
> Key changes:
> - Change DFS region from FCC to ETSI (document references ETSI
>   standards EN 300 328 and EN 301 893 as the applicable radio
>   interface standards)
> - 2.4 GHz: expand to 2400-2483.5 MHz at 23 dBm
> - 5150-5250 MHz: 23 dBm
> - 5250-5350 MHz: 20 dBm with DFS (no TPC, 3 dB reduction per EN 301 893)
> - 5470-5725 MHz: 27 dBm with DFS (no TPC, per EN 301 893)
> - 5725-5875 MHz: 24 dBm with DFS (per ETSI EN 302 502)
>
> Note: The TRC gazette conflicts internally by allowing 30 dBm for
> 5725-5875 MHz while citing EN 301 893 (which doesn't cover this band).
> Lacking TRC clarification, we conservatively default to the ETSI
> EN 302 502 limits (24 dBm).
>
> Signed-off-by: Mohamed Aashif <maashif011@gmail.com>

Reviewed-by: Ping-Ke Shih <pkshih@realtek.com>

Re: [PATCH v3] wireless-regdb: Update regulatory rules for Sri Lanka (LK)

[Chen-Yu Tsai]

On Mon, May 18, 2026 at 3:48 PM Mohamed Aashif <maashif011@gmail.com> wrote:
>
> Update Sri Lanka regulatory domain based on the RTTE Type Approval
> Rules 2020 from the Telecommunications Regulatory Commission of
> Sri Lanka (TRC).
>
> Source: https://www.trc.gov.lk/content/files/licensing/RTTE_GAZETTE-English.pdf
>
> Key changes:
> - Change DFS region from FCC to ETSI (document references ETSI
>   standards EN 300 328 and EN 301 893 as the applicable radio
>   interface standards)
> - 2.4 GHz: expand to 2400-2483.5 MHz at 23 dBm
> - 5150-5250 MHz: 23 dBm
> - 5250-5350 MHz: 20 dBm with DFS (no TPC, 3 dB reduction per EN 301 893)
> - 5470-5725 MHz: 27 dBm with DFS (no TPC, per EN 301 893)
> - 5725-5875 MHz: 24 dBm with DFS (per ETSI EN 302 502)

The numbers and units should match the official regulations.

The official document you provided uses mW, so please use mW throughout,
unless there are dBm calculations like for the reduction due to no TPC
or adoption of dBm numbers from ETSI rules.

> Note: The TRC gazette conflicts internally by allowing 30 dBm for
> 5725-5875 MHz while citing EN 301 893 (which doesn't cover this band).
> Lacking TRC clarification, we conservatively default to the ETSI
> EN 302 502 limits (24 dBm).

             ^ TPC

Will fix up when applying.

>
> Signed-off-by: Mohamed Aashif <maashif011@gmail.com>
> ---
> Great, thanks. Removed DFS from 5150-5250 MHz.
>
> Changes in v3:
> - Corrected the table caption in the source comment to "Table 2 - Applicable Standards- Wireless"
> - Removed DFS flag from 5150-5250 MHz
>
> Changes in v2:
> - Split 5150-5350 MHz into 5150-5250 MHz (23 dBm) and 5250-5350 MHz
>   (20 dBm), adding AUTO-BW to both.
> - Applied a 3 dB reduction to 5250-5350 MHz and 5470-5725 MHz (now
>   27 dBm) to comply with ETSI limits since TPC is unsupported.
> - Capped 5725-5875 MHz at 24 dBm per ETSI EN 302 502.
>
>  db.txt | 15 +++++++++------
>  1 file changed, 9 insertions(+), 6 deletions(-)
>
> diff --git a/db.txt b/db.txt
> index fdc2c13..8038f5a 100644
> --- a/db.txt
> +++ b/db.txt
> @@ -1058,12 +1058,15 @@ country LI: DFS-ETSI
>         # 60 GHz band channels 1-4 (ETSI EN 302 567)
>         (57000 - 66000 @ 2160), (40)
>
> -country LK: DFS-FCC
> -       (2402 - 2482 @ 40), (20)
> -       (5170 - 5250 @ 20), (17)
> -       (5250 - 5330 @ 20), (24), DFS
> -       (5490 - 5730 @ 20), (24), DFS
> -       (5735 - 5835 @ 20), (30)
> +# Source:
> +# https://www.trc.gov.lk/content/files/licensing/RTTE_GAZETTE-English.pdf
> +# Sri Lanka RTTE Type Approval Rules 2020, Table 2 - Applicable Standards- Wireless
> +country LK: DFS-ETSI
> +       (2400 - 2483.5 @ 40), (23)
> +       (5150 - 5250 @ 80), (23), AUTO-BW
> +       (5250 - 5350 @ 80), (20), DFS, AUTO-BW
> +       (5470 - 5725 @ 160), (27), DFS
> +       (5725 - 5875 @ 80), (24), DFS
>
>  # Source:
>  # http://lca.org.ls/images/documents/lesotho_national_frequency_allocation_plan.pdf
> --
> 2.54.0
>
>

Re: [PATCH v3] wireless-regdb: Update regulatory rules for Sri Lanka (LK)

[Chen-Yu Tsai]

On Mon, 18 May 2026 13:17:43 +0530, Mohamed Aashif wrote:
> Update Sri Lanka regulatory domain based on the RTTE Type Approval
> Rules 2020 from the Telecommunications Regulatory Commission of
> Sri Lanka (TRC).
> 
> Source: https://www.trc.gov.lk/content/files/licensing/RTTE_GAZETTE-English.pdf
> 
> Key changes:
> - Change DFS region from FCC to ETSI (document references ETSI
>   standards EN 300 328 and EN 301 893 as the applicable radio
>   interface standards)
> - 2.4 GHz: expand to 2400-2483.5 MHz at 23 dBm
> - 5150-5250 MHz: 23 dBm
> - 5250-5350 MHz: 20 dBm with DFS (no TPC, 3 dB reduction per EN 301 893)
> - 5470-5725 MHz: 27 dBm with DFS (no TPC, per EN 301 893)
> - 5725-5875 MHz: 24 dBm with DFS (per ETSI EN 302 502)
> 
> [...]

Applied to master in wens/wireless-regdb.git, thanks!

[1/1] wireless-regdb: Update regulatory rules for Sri Lanka (LK)
      https://git.kernel.org/wens/wireless-regdb/c/63d0d6b6aa47

Best regards,
-- 
Chen-Yu Tsai <wens@kernel.org>