Feedback forum

Feel free to add a comment, a suggestion, or report bugs on this web site
contact@sqimway.com

Date Name Comment

21 01 2024
06:00

Tina

Good Day! Is there any possibility of adding Wi-SUN, LoRaWan, and Zigbee protocol sheets? It would be very helpful for a sub-1 GHz study. Many Thanks.

11 01 2024
22:12

LG

Hi James, ok fixed

08 01 2024
23:52

James

Good afternoon, I noticed that for n259, the starting NR-ARFCN for low channel is incorrect. Per TS 38.101-2 and TS 38.104, the starting NR-ARFCN should be 2270833 for both 60 and 120 kHz rasters.

02 01 2024
22:12

LG

Hi Michal, my script is failing after the introduction of bandwidth 3MHz, I need some time to fix it

02 01 2024
22:08

LG

Hi James, for n257 and raster 120, the starting arfcn is odd value 2054167, and allowed N step size 2; I think 2057500 is applicable for raster 60 with step 1, but for raster 120, only 2057499 or 2057501 are applicable

29 12 2023
09:29

James

It appears that the FR2-1 ARFCN check may be incorrect; it is showing channelization that do follow the Nref step size as invalid. Here is an example: n257, Raster 120, N step size 2, SCS 120, Channel Bandwidth 400 should have a valid ARFCN 2057500, but the output states ARFCN 2057500 as invalid.

13 12 2023
08:19

Michal

Hi, it seems that nr_ca.php interband channel bandwidths are broken, for records not referring to intraband tables it just displays "1" instead of indicating channel bandwidths according to table header.

04 12 2023
12:23

SM

A link to the bandwidth section (https://www.sqimway.com/lte_bandwidth.php) is missing from the LTE homepage (https://www.sqimway.com/lte_band.php)?

29 11 2023
12:13

Sławek

The NR band/carrier BW support has a bug - in N71 there should be new note added - from rel18 25/30&35MHz are no longer DL only, but are optional for UL.

12 11 2023
22:17

Rrr

Wifi example

30 10 2023
22:52

LG

Hi, LTE b6 and b23 seems always not applicable in latest 3GPP, but I have added both bands with a note

26 10 2023
02:51

Alexander Newcomer

We use this site consistently in our test lab. It is very helpful for setting up test tables and conducted power excels. Is it possible to add in LTE Band 23 (NTN)? Our lab will do testing on this technology, which we understand was never implemented in devices before, but has already defined channels, frequencies, and bandwidths.

02 09 2023
08:47

Cassandra

Hello Thank you for making this site - its *extremely* useful for me and my colleagues !

25 07 2023
08:49

SJSJ

Please Could you also update Wifi 7 and Channel Pucnturing, Multi RU System ?

17 07 2023
22:12

LG

Hi, just added WiFi 6GHz

06 06 2023
07:16

KM

Could you also update Wi-Fi 6GHz band????

26 05 2023
00:42

LG

Now updated

14 05 2023
08:43

Moomen

Hi, can we have an updated "E-UTRA/NR Dual Connectivity FR1" , the last update is "38.101-3 (Rel 17 Mar 2022)" which is more than a year back

09 05 2023
20:19

Alejandro

# Wireless frequency bands Welcome, this is a personal web site on wireless frequency bands and telecom protocols Bands and frequencies Here is a frequency / arfcn caculator for NR, LTE, UMTS, GSM, CDMA and Carrier Aggregation combination info ARFCN Absolute radio-frequency channel number NR New Radio LTE Long Term Evolution HSDPA High-Speed Downlink Packet Access UMTS Universal Mobile Telecommunication System CDMA Code Division Multiple Access EDGE Enhanced Data for GSM Evolution GSM Global System for Mobile communication Local custom search Site map 4G LTE Bands Carrier Aggregation CA spectrum FCC spectrum Proximity Services Dual Connectivity 3G UMTS Bands HSDPA UMTS TDD 5G NR Bands Carrier Aggregation Dual Connectivity C-Band 2G GSM CDMA WiFi Store LTE radio System Information UE category Radio resource grid DCI decoder PDSCH allocation TDD frame FGI bits Event reports Measurement gaps MFBI PRS RRC messages S1 messages X2 messages UMTS radio System Information HS-DSCH category E-DCH category RRC messages NBAP messages RANAP messages PCAP messages GSM radio System Information GPRS classes RRC messages Tools UE capabilities Hexa calculator Milenage Signal Power/Quality dBm/Watt Modulation Radio calculator NR radio Radio resource grid Channels GSCN frequency Slot format PRACH config RRC messages NR max throughput MCS PDSCH NAS Security keys PDCCH CCE Index TETRA radio Abbrevia

01 04 2023
10:42

Chris

The link provided to the last 3GPP spec documents seems to be broken. E.g. when you click on "38.104" at the top of https://www.sqimway.com/nr_band.php, it take you to an error page. Is it possible to fix this? THANKS

09 02 2023
01:30

kwkw

hello LG thanks for your quick reply, it looks right now.

08 02 2023
23:15

LG

Hello kwkw, it seems the server has changed the version of php. I configured to an older php version, and it seems nr_refA.php is working better ...

07 02 2023
10:10

kwkw

hello experts there is some wrong in the link https://www.sqimway.com/nr_refA.php,for example cannot chose the right bandwidth per band, cannot input the right arfcn. do we have anybody to solve the bug?

23 01 2023
23:28

Eric

Any chance to update those 38.101 specs? Keep up all your excellent works, thank you!!

06 01 2023
15:51

Andrew

Sorry, the error is on my end. Please disregard the previous comment

06 01 2023
15:46

Andrew

Looks like the center channel is being reported incorrectly for NR B66 AWS-3 FDD. Ch 431000 = 2155 MHz, Ch 349000 = 1745 MHz. These number are correct on the chart but when you search for them entering Ch 431000, I am seeing Ch 431000 = 2155 MHz, Ch 349000 = 1755 MHz. 1755 should be 1745for the complementary center channel.

08 12 2022
06:24

Ameen Swati

Hey , I would appreciate if we have global mobile spectrum/MHz view . which region use which band /2G/3G/4G and 5G . it will be selectable on country level

23 09 2022
11:45

eric han

would like you add the tool between GSCN and ARFCN

25 08 2022
15:40

Thanh Nguyen

Please add UE power classes for ENDC and NRCA for FR1 and FR2

24 08 2022
14:45

Topi

n75/n76 shows as NAR Geographical Area. On the other hand, it seems that it is CEPT defined. Should it be EUR instead of NAR? Or additionally to NAR? What is the usage of L-Band in US? Thanks for this great resource!

27 07 2022
22:37

LG

NR frequency round and other issues fixed

25 07 2022
19:04

Luke

n100 downlink low channel and mid channel frequency/arfcn appear to be out-of-sync as compared to the calculated frequency to arfcn mapping (from the calculator at the top of the NR page). Thank you. For n100 downlink low channel: Table shows 919.5 MHz/183880 Calculator returns 183880 <==> 919.4 MHz, 919.5 MHz <==> 183900 For n100 downlink mid channel: Table shows 922.3 MHz/184440 Calculator returns 184440 <==> 922.2 MHz, 922.3 MHz <==> 184460

27 06 2022
20:26

Jason

In the NRARFCN PointA Page How is the Restricted Frequency Range for a given Bandwidth Is defined ?

07 06 2022
09:04

Ramprasad

In srs-calculation part, for UE specific SRS, the SRS periodicity written as 120ms for Isrs 157 – 316 but actual value is 160ms, please help to modify it

18 05 2022
14:35

Alan

I noticed on the NR-DC page it shows, DC frequency bands 38.101-3 (Rel 17 Mar 2022) Dual connectivity (DC) band combinations of LTE + NR carriers. Should it be NR + NR carriers? Really enjoy the web site. I have used it for years as a quick reference. Keep up the great work!

17 05 2022
23:22

LG

Hi, surprising that UE parser is still used .... I did not find any limit in the UE parser, may be capabilities are in new asn1 extensions ?

11 05 2022
22:30

LG

Hi, do you know in which document are specified Non-Terrestrial Networks bands ?

05 05 2022
10:13

UE cap. parser and long lists

UE cap. parser is excellent and useful tool. However, the parser it not able to process long capability lists. Is it possible to increase the amount of data it can process ? many thanks

24 03 2022
22:02

Mehmet Hinc

Adding Rel-17 NTN Non-Terrestrial Networks bands would be very good.

23 02 2022
03:57

Glory

Adding the info power class would be better for some people not know 3GPP well.

11 02 2022
23:31

LG

A lot of CA configurations, I need some time to do it !

03 02 2022
12:21

ME

Can you please update NR-CA BCS according to 38.101-x (e.g. using v17.4.0), as there are new BCS addition addressing new CBW added for some NR bands. E.g. for inter-band CA (two bands), there are many new BCS added --> like CA_n1A-n78A, now supporting BCS 0-3 for the purpose of adding for example 70MHz on n78 in CA, which is now being used in some parts of Europe. We depend on your website to keep up to date without having to re-validate the tables directly from 3GPP docs. Thank you for all the help!

24 01 2022
22:22

LG

Hi, there is this page C-Band

23 01 2022
08:18

Yibin

Hi, could you please help add band definition for C-Bands which Verizon and AT-T are using. Thanks

14 12 2021
16:26

Bich Nguyen

Thanks for keeping up a great job with this site. Could you please add CA_2A-13A BCS=2 per TS 36.101 V16.10.0? Thank you :)

06 12 2021
21:07

END

This is a very helpful compendium. Great job laying out the information. Thank you! One thing I would find interesting is a max throughput calculator. Cheers.

22 11 2021
23:41

LG

Hi, updated to 3GPP Rel 17 Sept 2021

22 11 2021
22:58

Brian

Can the frequency check by channel bandwidth be added for NR like it is present for LTE?

19 10 2021
16:08

Abdel Bagegni

Many thanks for the great website. One more thing to add which would be quite beneficial if you add a list of "popular" phones/models that supports the different CA/DC combinations. It is not an easy task but it would be really useful.

12 09 2021
10:27

Mangaldeep Sahoo

Is It Possible to add a separate section for O-RAN also.. It is because in near future it could be the popular among Operators.

23 07 2021
17:30

VK

Hi, Can you please are combos for DC_FR1_FR1? Is there a concept of Dual-connectivity on FR1 + FR1 to a single Operator?

16 07 2021
01:52

Andrew Kolomatski

On the Radio Resource Grip page, it is possible to select "Display max L beams", however the tool automatically implies that all the beams are consecutive starting from 0 to L. However in reality, at least for high band (mmWave), and especially for the band n257 displayed by default on the page, the equipment vendors always use non-consecutive SSB beams and not starting from 0. Would it be valuable to enhance the page where a user could tick the specific beam indexes, not just a range from 0 to L? This would require a TDD pattern compatibility check, however this is exactly how it is implemented in real life, including constraints on suitable SSB indexes imposed by TDD pattern.

21 06 2021
17:29

Mark

The best 3GPP resource on the web (after 3gpp.org). Thanks so much for putting it together.

17 06 2021
22:38

LG

Hi Norbert, it is fixed

14 06 2021
13:07

Norbert

Hi, first I would like to congratulate you for your great WEB-Site, which has been both interesting an useful for me to understand LTE and now 5G. I’m now taking a deeper look into 5G-NAS Messages and stumbled over the issue, that the message-type for 5GS session management messages on your site seem to differ from the types in the 3gpp and ETSI Standard. In your table the first half-Byte of the ID is 6 or 7 where it should be C or D according to the Standard (Table 9.7.2). ETSI TS 124 501 V16.5.1 Table 9.7.2: Bits 8 7 6 5 4 3 2 1 1 1 - - - - - - 5GS session management messages 1 1 0 0 0 0 0 1 PDU session establishment request 1 1 0 0 0 0 1 0 PDU session establishment accept 1 1 0 0 0 0 1 1 PDU session establishment reject 1 1 0 0 0 1 0 1 PDU session authentication command 1 1 0 0 0 1 1 0 PDU session authentication complete 1 1 0 0 0 1 1 1 PDU session authentication result 1 1 0 0 1 0 0 1 PDU session modification request 1 1 0 0 1 0 1 0 PDU session modification reject 1 1 0 0 1 0 1 1 PDU session modification command 1 1 0 0 1 1 0 0 PDU session modification complete 1 1 0 0 1 1 0 1 PDU session modification command reject 1 1 0 1 0 0 0 1 PDU session release request 1 1 0 1 0 0 1 0 PDU session release reject 1 1 0 1 0 0 1 1 PDU session release command 1 1 0 1 0 1 0 0 PDU session release complete 1 1 0 1 0 1 1 0 5GSM status

26 05 2021
22:20

LG

Hi, NR CA bandwidth class has been updated. Thanks for feedback

26 05 2021
12:53

Juergen Schmitt

NR CA: Can you fix the table "CA bandwidth class" according to the latest 38.101-2 (Rel-15, 16 or 17) ? E.g. G has 2 contiguous CC (not 3 as the table now says). Thanks for the great work!

20 05 2021
03:58

xuyuanxing

A great website, could you please inform us periodically on this forum when any part of the website is updated?

12 05 2021
02:02

Gw

The UE Cap info parser gets stuck for r13. Wondering if this is a known issue and any resolution available? Thanks for this tool. great Work .

07 04 2021
16:14

AlinC

Hello, could someone please explain the 2A part from this EN-DC combo or any other combo with (2A): DC_1A_n78(2A) Does this mean: B1 max 20MHz + n78 max 100MHz + n78 max 100MHz? If this is true, what is the difference to DC_1A_n78C ?

01 04 2021
21:45

Ilya

Hi Can you fix "LTE frequency band 36.10" rel date? Now it is 7 Dec 2021, but need to bee 2020.

01 04 2021
20:15

Mike

Is it possible to publish Wi-Fi 6 (802.11ax) channels/frequencies? Love your site, thanks for all the hard work!

26 03 2021
00:36

HA

This site is amazing. Thanks al lot for all the effort putted on it! I use it and recommend it all the time.

18 03 2021
19:13

RD

I receive an invalid configuration when inputting valid channel parameters into the frequency/PointA calculators.. band n71 - absolutelyfrequencySSB NR ARFCN = 126490 I have an odd configuration from a live network. carrierbandwidth: 52 subcarrierspacing: 15 Khz offsettopointA: 18 absoluteFrequnecySSB: 126490 uplink absolutefrequencypointA: 134664 from MIB subcarrierspacingcommon: 15 kHz ssb-subcarrieroffset: 13 These values do not have overlap of CRB and SSB

03 03 2021
23:01

LG

Hi Eric, I plan to update after next 3GPP release by the end of this month

02 03 2021
16:46

Eric

Any chance to update those CA/DC combos for NR? Seems they are still as of June 2020 releases. Much appreciate that!

31 01 2021
22:37

LG

Hi xuyuanxing, thanks for feedback, it is repaired

26 01 2021
02:00

xuyuanxing

Hi, There is something wrong at page PDCCH search spaces. when I choose some configuration with SS/PBCH block and CORESET multiplexing pattern2 and FR2 or SS/PBCH block and CORESET multiplexing pattern3 and FR2, the table should change accordingly, but the actual table the page shows is always SS/PBCH block and CORESET multiplexing pattern1 and FR2.

13 12 2020
21:29

LG

Hi Nguyen, it is updated, Thanks

10 12 2020
14:25

Bich Nguyen

Hi. Thanks for updating the BCS. Could you please also update BCS for 7A-7A in CA_2A-7A-7A-29A-66A to 3, instead of 1? Thanks! :)

29 11 2020
23:25

LG

Hi Espoo, there is a new page Arfcn Point A

22 11 2020
18:33

LG

Hi Nguyen, I fixed the BCS value, Thanks

20 11 2020
20:38

Emre

Hi, Is it only me that UE Capability Pretty viewer stuck and not giving any output?

20 11 2020
11:32

Bich Nguyen

Hello, Thank you for your great work on this site. I have a comment on CA_2A-7C-66A-66A combination. the BCS for 7C should be 2 per 3gpp v16.7.

08 11 2020
21:51

LG

Hi MMT, SCS configurations have been added to the export

08 11 2020
21:50

LG

Hi Andrew, the columns SCS + max bandwidth is just a view of 3GPP maximum allowed bandwidth for each SCS of each single band of the CA combination. This info may overload the page, so I put this info as optional and disabled by default

08 11 2020
13:42

MMT

Great website, Keep going thanks very much! The csv export of bands does not include Channel bandwidth and scs configurations.

06 11 2020
02:59

Andrew Kolomatski

Hi LG, The table "Intra-band contiguous CA" on the https://www.sqimway.com/nr_ca.php page does not seem to add up. First of all, it is not clear what "SCS bandwidth max (MHz)" column name means at all. And a quick example demonstrating that the values in this question might require attention: CA configuration CA_n257M implies 8x100MHz=800MHz carrier aggregation, but the values in the table are 200MHz and 800MHz, if the culumn "SCS bandwidth max (MHz)" is assumed to denote maximum aggregated bandwidth. If this column in fact assumes something else, then 800MHz is not mentioned anywhere anyways.

24 10 2020
20:19

Espoo

Hi LG, how to calculate cell freq center based on absoluteFrequencyPointA/ absoluteFrequencySSB for NR? Suggest add a page. thx

21 10 2020
14:05

AlexH

regarding nominal channel spacing: please have a look at chapter 5.4A.1 Channel spacing for CA of 3GPP TS 38.101-1 V16.5.0. You will realise that the SCS of the CA carriers is no longer taken into account in the way it was used in older specs.

19 10 2020
22:41

LG

Hi AlexH, could you please provide an example ? not sure where is the issue

18 10 2020
21:54

LG

Hi Craig, fixed. Bug comes from the addition of n96 that extends above 7GHz

15 10 2020
20:27

AlexH

The definition of NR nominal channel spacing was changed in 3GPP. Would you please update the page accordingly? Thank you for your work!

14 10 2020
16:36

Craig

A number of the NR bands are currently being graphically misrepresented at the wrong frequencies, n48, n77, n78 for example are too low. for example n48 @ ~ 1800MHz. The table values are correct, however. https://www.sqimway.com/nr_band.php

07 10 2020
21:53

LG

Hi Andrew, I have distinguished subframes and slots between FR1 and FR2 Thanks

30 09 2020
07:25

Andrew Kolomatski

It would appear that there is an ambiguity on the page. First off, the 5th column in the long "PRACH Config Index" table is named "Slot number", whereas in 3gpp 38.211 it is called "Subframe number" in 2 out of 3 cases (for all FR1 cases essentially). But this is not a big deal. The real ambiguity arises in the very bottom table "PRACH occasions" having its 3rd column named "Slot". Looks like it should be either named "Subframe" or a crucial comment must be added, for example like this copy-paste from 3gpp 38.211: For the purpose of slot numbering in the tables, the following subcarrier spacing shall be assumed: - 15 kHz for FR1 - 60 kHz for FR2. As an example of ambiguity, without this comment, a PRACH allocated in subframe 7 (PRACH configuration index 9) in the network with 30kHz SCS, is presented as allocated in Slot 7, while in fact it is located in slots 14&15 of 20-slot frame.

27 09 2020
23:23

LG

Hi Anouar, I dont't know if there is a 3GPP spec about MFBI. Main NR full overlapping bands are (2,25), (5,26), (38,41), (77,78), (257,261)

25 09 2020
02:04

Anouar

Would you kindly share the 3GPP source that addresses the overlapping bands for 5G NR via MFBI functionality. Thank you!

22 09 2020
22:04

LG

Hi LC, arrows direction is now fixed, Thanks

21 09 2020
14:05

LC

Dear LG, on https://www.sqimway.com/nr_nas.php#registration, Authentication req/SMC have incorrect direction.

03 09 2020
18:24

BC

Great web, been using it since the previus url. Regards from Uruguay!

30 08 2020
22:03

LG

Hi Michael, I agree; the usual rule I used is to indicate the 3GPP release of the creation of the band, even if there were some changes in the supported bandwidth later on. The best would be to use a database with information for each release, but it would require a lot more work

26 08 2020
10:49

Michael Wave

NR n38 support for BW 40MHz is stated in the web page that is release in 3GPP r-15. How ever when comparing r-15 and r-16, bandwith is supported only on r-16.

12 08 2020
06:34

SF

Hi, there is no display of NR Channel Sync Raster tool, I have tried with Microsoft Edge, Google, it can display before.

04 08 2020
22:00

EA

Thanks for this site. Ive been using it as reference for years. Keep up the good work!

02 08 2020
17:02

LG

Hi, I checked with Chrome a Firefox, it seems ok, can you try again ? Thanks

31 07 2020
10:53

Ericsson-CAT

Hi, we can not get the value from Arfcn to Frequency or Frequency to Arfcn in NR page, can you check the problem? thanks!

22 07 2020
15:07

GU

Hi LG, first thing a HUGE thank you for the tools & knowledge on this site, really outstanding. Just one ask related to the UECapability decoder/viewer. Any chances you guys could include the MIMO layers for the EN-DC combos as you already do for the LTE/4G CA combos? i.e. based on featureSetCombination(s) and featureSetListPerDownlinkCC info. Thanks in advance

14 07 2020
22:10

LG

Hi Stan M, the UE capability script is not so clean, and has not been updated for 5G, I prefer not to share it

14 07 2020
22:04

LG

Hi, new pages added C-Band and KDF security keys

09 07 2020
18:17

Stan M

Is the source code for the "UE capability tool" available for download somewhere?

08 07 2020
22:16

Juhyuk Choi

Amazing information! Thank you.

05 07 2020
19:55

SSharma

Hello, thanks for putting this together. Great resource. Is there way to generate the UL resource grid like you have one for DL. Thanks

16 06 2020
23:20

LG

Hi Wallace, in the main menu, select Export, you may export bands for all techno in csv format

16 06 2020
12:17

Wallace

Impressive work! thanks for sharing with us! Do we have any way to export the RAT/BW/BAND relation? thanks in advance

15 06 2020
07:32

Bruce

All RRC timers and SIM timers are wanted

11 06 2020
21:51

OB

Impressive work! Wanted to highlight a potential bug in SS/PBCH range [MHz] column in Channel synchronization raster page. The range should be shifted (SCS/2) kHz downwards since SSB frequency maps to the center frequency of resource element #120 of the SSB. Thanks!

19 05 2020
22:57

LG

Hi, on the shared cell, eNb may schedule MBSFN subframe, PDCCH symbol, Cell RS and optionally PRS; if no LTE UE is scheduled on a slot, gNb may transmit on NR slot PDCCH symbol after the LTE PDCCH symbol. It is not so easy to display within a mixed LTE + NR grid

03 05 2020
10:37

Nuno Fernandes

Is it possible to include some information about DSS (Dynamic Spectrum Sharing)? Great work!!!

22 04 2020
22:43

LG

Impressive ! find this error among hundred of combinations. Fixed

22 04 2020
21:36

Brian Wolf

For downlink 3C-7A-8A, third band is displayed as 20, but it should be 8.

20 04 2020
22:24

LG

Added NR NAS page

19 04 2020
21:32

LG

Hi, on this page lte_resource_grid you can see MBSFN subframe(s) and LTE Cell RS configuration; on NR side, each company may have their DL/UL configuration

16 04 2020
00:04

Russel Lindsay

Do you have an "NR Radio Resource" diagram that shows the frame structure of a DSS signal? How will the spectrum be shared between LTE and 5G?

23 03 2020
22:05

LG

Added NR Carrier aggregation R16 Dec 2019 with filter based on mode

01 03 2020
21:49

LG

Hi, I added a BLER rate input parameter to the page nr_pdsch.php

16 02 2020
21:24

LG

Test of forum
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