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niviuk@free.fr

Date Name Comment

19 05 2019
00:08

Niviuk

Hi, in 36.331, I found MFBI in the document. NR max rate calculator has been enhanced to take into account the bandwidth for each band, and fixed a typo. Regards

16 05 2019
23:15

jay

@Niviuk I tried on both firefox and explorer, the formatting is not there. Checked on multiple computers

16 05 2019
17:32

Robert Clark

Hi excellent site thanks. Minor point - maybe I'm wrong or there's a good reason, however page for "Multi Frequency Band Indicator". Looks like this should be Multi Band Frequency Indicator as per acronym used in the example System Information message. Rob

16 05 2019
17:16

Fritz

Maybe there is a bug in NR UE max data rate calculator. Acc. to 3GPP 38.101-1 n51 is only 5Mhz BW. This would correspond to 25 RB @ SCS 15kHz. n78 is max 50MHz BW @SCS 15kHz with max. 270 RB. Output is the same always 288.9 Mbps. Other settings: 1, 1, 256QAM, 1, band, 15kHz, 0,14 Or is there some problem on my side?

15 05 2019
22:47

Niviuk

Added one digit for the NR frequency field. About table formatting issue, it may be slowness of the server to download bootstrap css files ? I was not able to reproduce it

14 05 2019
19:42

GB

Can you look at the table formatting and add the border lines back please. Such a useful page. Currently I copy the table into word and enable borders for quick access.

14 05 2019
13:24

Kim

For NR, Convertion from Freq to NR-ARFCN. I can't enter enough digits, like 27925.08 .

08 05 2019
23:09

Niviuk

Hi, strange that formatting disappears, I have not made any change since more than two weeks

07 05 2019
17:54

jay

Niviuk hath the tables giveth, and Niviuk hath the tables taketh. Table formatting is gone again

07 05 2019
17:19

Nikolay Staykov

Please add 5G bands. For example Huawei Mate X is 5G Non-Standalone (NSA), Sub6 / mmWave; N41/N77/N78/N79

04 05 2019
21:27

Jose

This website has been extremely helpful. Does anyone know of an excel sheet or a way to get the function of this calculator to convert from EARFCN/UTRA/ARFCN to uplink and downlink frequencies in an excel sheet that can be used offline? I am close in my own attempt to help our engineers in the field but am running into some snags with the formula when for example I need to convert the downlink EARFCN to the uplink EARFCN.

09 04 2019
03:49

jay

tables are good now. thanks!

08 04 2019
15:39

Ido

Missing Band 53 in 'LTE frequency band'

07 04 2019
22:10

Niviuk

Hi, do you still have the formatting issue ? I tried with different browsers, after cleaning the cache, but tables format seems ok

03 04 2019
16:48

Khaled Omaira

No more tables, impossible to read the data

23 03 2019
00:22

jay

Hi, it appears that the table formatting has disappeared? I don't see different shades between rows anymore

21 03 2019
23:06

Leonardo Zanoni Pedrini

Found your great website. I have posted a link to it in our Telecommunications Community: http://www.telecomhall.net/t/wireless-frequency-bands-and-telecom-protocols/5169

18 03 2019
17:56

Colin Zhu

Excellent knowledgebase. possible to add bandwidth class info for mmW which are being shown in MRDC UE cap?

12 03 2019
06:24

Andrew Kolomatski

Hi OL, If you scroll down the forum to the date of 11/12/2017, you will find the answer. There's no mistake, this is in line with 3GPP.

06 03 2019
08:33

OL

Hi Niviuk, possible I found mistake in LTE resource grid. When set number of ports to 1, resource grid show black(unused) symbols in Slot: 0 Symbol: 0. Looks like it doesn't take into account the fact that only one antenna port used. Is it okay? Checked in 3GPP 36.211 figure 6.10.1.2-1

22 02 2019
16:36

RF

Hi Niviuk, Do you plan on adding info on NB-IoT at some point? If so, it'll be greatly appreciated. Great job overall on this very useful Website. Thanks!

20 02 2019
22:10

Niviuk

Hi, LTE and NR NSA data flow have been updated; for CU-DU, I just have the F1 asn1 grammar; 70 MHz bandwidth is a configuration found in 38.104. Best regards

20 02 2019
09:59

TT

There's no 70MHz BW defined in the 38.101 for NR.

19 02 2019
07:04

Ido

Excellent knowledgebase. Are you planning to add detailed explanation on NR splits? (DU/CU)

04 02 2019
19:26

Js Xcode

I have found the information that you are using and I hope you are enjoying your time.

31 01 2019
08:36

KG

I just want to RRC working in LTENR(means step by step description with RRC State)...Please update asap flow diagram of RRC in LTENR

30 01 2019
22:32

Niviuk

Hi KG, I will complete the LTE data flow with S1, and add a data flow for NR, but I need to think how to distinguish NSA, SA

30 01 2019
22:26

Niviuk

Hi Gio, I removed the column #PRBs from the SS block frequency raster table, it was out of context

30 01 2019
03:27

Gio

I'm still wondering on what #PRB means in your tables, but all your calculations are OK. Seems like the vendor I'm working with was using SSB out of the SYNC, hence my failed believe that the calculations were wrong. Keep the good work.

29 01 2019
19:11

Gio

With respect to my previous comment. I'm talking Sync raster calculation below 24,250. I cannot replicate your results using TS 38.101-1 5.4.3, but for 24,250 and above your results are replicable using TS38.101-2, so it would seem there is an issue with the calculation on sub6Ghz.

29 01 2019
18:28

Gio

It is very unclear what do you mean by # PRBs on NR Frequency Synchronization Raster table. SSB will always be 20 PRB and SS Reference Frequency will always be Sub. 0 of PRB #10 (as of Dec. Spec). I'm pointing this out because the way you are doing Raster calculations themselves is unclear.

29 01 2019
13:19

Ali

Hi, I would like to know UL-MIMO and UL-CA bandconfigs in LTE and in 5G. I have only seen contiguous cases so far in UL-CA but would be interesting to know interband combination as well. Same goes for UL-MIMO scenario. Thanks in advance.

28 01 2019
11:09

KG

Here I am taking about RRC in LTENR

28 01 2019
11:01

KG

Can you please share a flow diagram of packet transmit for LTE-NR like 5G TF or its a same flow just other parameter changes only????

07 01 2019
00:37

Andrew Kolomatski

Do you mind one more suggestion regarding RIV calculator? Would be a bit more user friendly to rename "LTE RIV decoder (36.213 §7)" into "LTE RIV decoder for DL (36.213 §7)". And, if possible, to add "LTE RIV decoder for UL (36.213 §8)" calculator, in particular emphasizing that only certain 34 values can be valid due to rule [2^a2]*[3^a3]*[5^a5].

03 01 2019
23:46

Niviuk

Hi Juan, thanks for the feedback, I have added a parseInt on input values

03 01 2019
17:43

Juan D.

The http://niviuk.free.fr/rb_calc.php NR RIV Calculator have bugs. For instance, N_BWP = 275, L_PRBs = 275, and PRB_start= 0 should be 549, but the calculator: is returning 275274, which is even above the limit. You can find the source of errors in rb_calc.js function nr_rbg_riv(...), which is not properly parsing string with numbers. In the example above, in some part of your code, the return value is calculated like this: riv = 275 + "274". We would expect to get a 549, but since this is JS, the values are concatenated. I assume you have several of the same issues all around the JS code. I hope the information is helpful.

20 12 2018
15:15

AshokG

Excellent work

18 12 2018
14:39

EricL

Hello, Your tool to check the UE Capabilities has been very useful. I remember there was an option to select shannon for samsung log before. Any issue for adding it back? :)

17 12 2018
23:42

Niviuk

AlexH, I see what you mean. I used the same scs for each GB. I have added a form to be able to select the scs of each carrier

16 12 2018
18:18

AlexH

Based on the formula from 38.104 §5.4.1.2: Band 1, raster freq 100, max mu 1, bw1 5MHz, bw2 10 MHz, scs1 15, scs2 30, my result is 6.9 MHz. The guard bands differ for those carriers so the numerator in the formula becomes smaller because the delta of the guard bands is substracted (after applying a factor of 2)

16 12 2018
00:17

Niviuk

For the UE capabilities, I have added a first version of NR capabilities. Exynos format is very different, I don't know yet, it takes quite some time to code

16 12 2018
00:08

Niviuk

AlexH, is it about the channel spacing at the bottom of the CA page, using the formula from 38.104 §5.4.1.2 ? Do you have an example where there is a different value from yours so that I can check ?

14 12 2018
14:25

AlexH

How do you come up with the nominal channel spacing values for NR? If I manually compute them based on 3GPP and different using different sub carrier spacings for the carriers, the minimum guard band defintions differ, so the result differs from your tables (the values are smaller)

13 12 2018
23:07

Radha

Can you add the support for r13 supported BC decoding of UE Cap Info

11 12 2018
00:45

rosanK

Hi, Is it possible to add UE capability decoding for the wireshark decoded UE capability message?

29 11 2018
00:57

Andrew Kolomatski

I’ve got a question regarding the fact that the DMRS of PBCH move in frequency domain with change of PCI and every fourth PCI causes the same DMRS positions – PCImode4 rule in 5G (unlike PCImode3 rule in 4G). Does the DMRS for PBCH move in frequency domain with change of SSB Index AS WELL? Or with change of PCI only? I am trying to find out how DMRS position can UE figure out whether it is reading, for example, the beam number 1 or the beam number 3. For example, we’ve got a mid-band cell with L=8 and PCI=333. So we’ve got 8 SS/PBCH blocks every burst set. PCI is always the same. Does the DMRS for PBCH moves in frequency domain from one block to another within the burst set? The current version of the 5G NR Radio Resource Grip places PBCH DMRS on the same frequency position for all SSB bursts in the SSB burst set. Is it right? Doesn't SSB Index (essentially beam identifier) make DMRS shift from beam to beam?

28 11 2018
21:39

Niviuk

Hi Thorsten, 38.101-3 indicates that if SUL transmission = supported, UE may not support simultaneous dual and triple uplink operation, due to possible intermodulation interference ... I suppose when receiving the info from the UE Capabilities, the network should not schedule simultaneous uplink transmission. If anyone has more info, please comment or correct

28 11 2018
21:20

Niviuk

Thanks Andrew for the answer on SS/PBCH matching. I have fixed the bug on the stripping of special characters, now < and <= should be ok

26 11 2018
08:05

Andrew Kolomatski

OMG, if you use symbol "less than" in the comment everything after that symbol is not posted:( So have to spam a bit with the third comment just to complete the point of the first one actually, terribly sorry. ******* and when B is less than A (15kHz vs. 60kHz in out example), the fixed 20PRBs of SS/PBCH turn into only 5 PRBs of general transmission bandwidth (PDCCH transmission bandwidth). That said, 18 and even 11 PRBs in the table do not represent any conflict.

26 11 2018
07:59

Andrew Kolomatski

******************* ...and when B

26 11 2018
07:53

Andrew Kolomatski

Hi, my previous question has been answered, so the matter is settled. "Maximum transmission bandwidth configuration 38.104 FR1 : below 6 GHz" table contains number of PRBs less than 20 (specifically 11 and 18) because this number indicates general transmission bandwidth based on the "PDCCH subcarrier spacing (kHz)" (let's call it A), whereas the bandwidth of the fixed 20 PRBs of SS/PBCH is independently defined by the "SS/PBCH subcarrier spacing (kHz)" (let's call it B), and when B

26 11 2018
07:31

Thorsten

Hi, In the CA section for NR there is the statement: "Single UL allowed". Not sure what is the meaning here?

22 11 2018
08:27

Andrew Kolomatski

Hi All, On the page "NR radio resources" there is a table "Maximum transmission bandwidth configuration 38.104 FR1 : below 6 GHz". The table contents is absolutely correct, exactly like in the 38.104. So my question is not about potential mistake, but just an appeal for help in case anybody can clarify it. Under the SCS=30kHz and BW=5MHz, and first two combinations under the SCS=60kHz as well, the table says that the number of PRBs is less than 20, specifically 11, 11 and 18. How can it be possible (11 or 18) while SS Block always must have 20 PRBs?!?

30 10 2018
02:39

daitt

I have question about the CA for band 1+8 in case band 1 5Mhz+ band 8 3Mhz, do you know which vendors support the configuration and which CAT of handset support? Thanks and Br

26 10 2018
01:35

Ricardo

great job! congrats for making a friendly way to consult such important information!

19 10 2018
22:41

Niviuk

Hi, I have added a bandwidth field after the CA combination in the export file

09 10 2018
22:52

AlexH

my mistake: The button is not on the export page but on the human readable one. I think I have described poorly what I was hoping to find. Example: Instead of a link to 1A-1A BCS 0, I was hoping the actual bandwidths for the two carriers in the corresponding .csv file, so I do not have to resolve the links myself

09 10 2018
22:49

AlexH

thank you for adding ULCA information to the csv file. You also wrote that there is now a "CA links" button for csv export. Unfortunately I am unable to find this button. Am I blind? The reason why I prefer the flat list is because it is easier to parse than resolving the links manually (but it is not a deal breaker)

09 10 2018
15:04

Dwight

The bandwidth associated with band 46 is incorrect. 775 MHz is not right. It should be 10, 20 MHz.

26 09 2018
23:16

Niviuk

Hi Cham, are you trying with Exynos logs ? it is not supported. The script needs to be updated; it only works with QCT logs for now

25 09 2018
21:12

DJ

What a great and helpful site. 3GPP could learn some lessons here ;)

25 09 2018
10:19

Cham

Hi Niviuk, i am still unable to use the UE capability calculator, i paste the message just like i shared with u on email before and i don't get any results. please can u help?

24 09 2018
22:16

Niviuk

Hi AlexH, UL CA is now in the export, and I added a button to enable/disable CA links. I am wondering why you prefer a flat version of the table ?

22 09 2018
08:03

AlexH

the uplink configuration is not part of the .csv file either. would you please consider adding it too? furthermore, have you considered making a FLAT version of the tables (without references to other CA bandwidth combination sets)?

20 09 2018
10:39

AlexH

Thank you for the quick fix! Would you please also consider adding the 3GPP release to the .csvs? Thank you very much!

19 09 2018
22:29

Niviuk

Hi AlexH, there is a button LTE-U on the page LTE CA which is not selected by default. If selected, the CA combinations displayed and the export will be identical. There is no filtering in the export. I have added another column "BW carrier 5" in the .csv export for intra band

19 09 2018
21:20

AlexH

the export of LTE_carrier_aggregation.csv does not have enough columns to be able to cover the information for „Intra Band CA contiguous“. Example: 41F would require a column called „BW carrier 5 (MHz)“ which is not available in the .csv

18 09 2018
17:01

AlexH

the export of LTE_carrier_aggregation.csv does include combinations not listed on the website (e.g. 255C). Why?

12 09 2018
14:10

Stone

Hi, please add calculator for NBIoT Inband and Guardband frequencies based on host cell bandwidth & uplink/downlink PRB index.

09 09 2018
22:45

Niviuk

Hi mm_tfx, it is a python script that I wrote, around 250 lines of code

09 09 2018
22:42

Niviuk

Hi Cham, I just did a test, it seems ok, did you process a recent QC trace ? format may have changed

09 09 2018
21:27

mm_tfx

I meant S1-AP, X2-AP but now when you mentioned them I found them on your site. I don't know how could I miss that. Do you use some available Python library or you made this script yourself? It is very usefull and could be used for more protocols especially new ones in 5G.

08 09 2018
10:57

Cham

Hi Niviuk, the ue capability decoder is giving zero values whenever i process a QC trace file. is it down or am i doing something wrong?

07 09 2018
22:21

Niviuk

Hi, RRC asn1 is extracted with a word macro, and a python script generates the html. There is RRC and F1 for NR, also on LTE radio, RRC, S1, X2, … Do you have in mind other protocols ?

05 09 2018
21:24

mm_tfx

The page with RRC ASN.1 is really usefull. Do you have plans for other protocols/interfaces? How did you make this page? Did you create some script to parse ASN.1 code?

04 09 2018
23:02

Niviuk

Hi Luis, I added a legend at the bottom of the NR resource tool

01 09 2018
14:04

Suresh Kumar bansal

Can some one help me with SMR band blocks and corresponding channel range for LTE.

01 09 2018
11:10

sylvain

Bon site, bien fait, pratique...

28 08 2018
14:55

Luis Hernandez

Hello! First, thanks for your LTE grid which I used so much!! In your NR resource tool, also great thanks for it, I am missing the legend for the color of the different channels. Also, I can imagine the layout gets messy with mixed numerologies and different CP length, but it would be nice to see how messy it can get! Thanks for your free contributions, you are truly great, and beware of Apple bots in your feedback forum :)

11 07 2018
01:34

ALBERTO

¡Que tal niviuk ! Por favor alguna pagina en internet que me recomiendes para actualizarme con conceptos y términos de telecomunicaciones, gracias.

09 07 2018
15:50

Ameen Swati

can you please check and feedback for LTE Devices and band support

05 07 2018
23:31

Niviuk

Hi, 5G bands are available under the NR (New Radio) menu, Regards

04 07 2018
15:53

MR

Dear Niviuk, do you plane to add portable mobile earth station bands ? BR, MR

04 07 2018
15:33

MR

Dear Niviuk, when do you expect to add the 5G bands ?

28 06 2018
14:16

Cham

Done, sent you via email

27 06 2018
21:46

Niviuk

Hi, please send me one or two ueCapabilityInformation messages in text format to my mail on top of this page, or on a shared server. I will check

26 06 2018
14:29

Cham

Hi Niviuk, i have so many traces from multiple chipsets, please let me know what and how can i share to help, as for my query it is for Exynos chipset

11 06 2018
23:43

Lopa

There should be an option of editing the NR abbreviation list. There are quite a few duplicate entries.

10 06 2018
22:13

Niviuk

Hi, I just tested, it seems ok, but not with exynos logs, as I don't have traces from this chipset

07 06 2018
13:31

Cham

Hi Niviuk, is UE capabilities pretty viewer working? will it support uecapabilities from exynos chipset?

04 05 2018
21:50

Niviuk

Hi Sam, this information is available on the page LTE / Bandwidth, Regards

03 05 2018
16:54

Sam

Hi Niviuk, Would you be able to add a column with the 3GPP release to the LTE Bands table similar to the LTE CA table?

24 04 2018
12:27

Priyank Panchal

Hi Team, Not able to understand what is "1. what is resource allocation slot 0 and 1"

13 04 2018
22:19

Niviuk

Hi gp, you are right, fixed.

12 04 2018
09:18

gp

In your calculation for 5G NR max data rate - UE radio access capability 38.306 there seems to be an error. If you take a single carrier with 2x2MIMO and 64QAM in FR1 with 30kHz SCS your calculation shows 62.6Mbps. It should actually be 876.4Mbps, shouldn't it? The numbers entered into the formula at the lowest line on that page are accurate, just the result is wrong. I believe you are missing the "14" from the Ts^mu part since your result is short by factor 14.

22 03 2018
05:53

Caldwell

Can anyone tell me why my iPhone 8 Plus on AT&T continually jumps from good 4g signal to searching to poor Lte signal in my home location? We recently bought a surecall signal booster and still no better service...when 4g shows up it runs fast but usually lasts 30-60 minutes then it searches and finds a Lte signal it’s really fast but lasts half as long as 4g signal and even with Lte off it still becomes a signal jumping issue..we have 6 iPhones in the house and hey all do this constantly....the signal booster does work it took what was normally 2 bars to full bars now

19 03 2018
23:21

Niviuk

Ren, NR = New Radio. 3GPP abbreviations are in 21.905, and I added some on the page NR / Abbreviations

19 03 2018
23:17

Niviuk

Eran, I retrieved the LTE resource grid from a web site that has disappeared, as I indicate on top of the page; I am not the author; It is not easy to modify the javascript (Ctrl-U)

19 03 2018
15:32

Ren

Hi dear, please can you remind me what means NR in 5G? thanks in advance
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