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niviuk@free.fr
| Date | Name | Comment |
03 12 2015 |
Mike Morgan |
Hi there. Great site. Just had a comment on the OTDOA. I was putting in some different settings and noticed that the grid view (PRB vs subFrames) showed PRS starting on subFrame 0 and then when I looked down the page at the view over whole SFN period of 1024 frames showed the PRS pattern starting in subFrame 1. just wanted to bring that to your attention. |
02 12 2015 |
Jacob |
Hi there, have a question here. For UMTS band1, the first channel center frequency is 2112.4MHz which means the operating bandwidth is from 2110~2115MHz (backward 2.4MHz, forward 2.6MHz); the last channel center frequency is 2167.6MHz, and the operating bandwidth is from 2165~2170 (backward 2.6MHz, forward 2.4MHz). With a known center frequency, How could I determine the operating bandwidth? Backward 2.4MHz or 2.6MHz? |
27 11 2015 |
Niviuk |
Sur la page Frequency search, on peut chercher pour une frequence toutes les bandes en LTE, UMTS, ... Et il y aussi une possibilité d'exporter les tables utilisées pour le calcul. Si cela ne correspond pas ce que vous aimeriez trouver, vous pouvez m'envoyer par mail une description plus detaillee. Je regarderais. Cdlt |
26 11 2015 |
Martin |
Est ce que vous avez une api ? Si non, est ce que vous pourriez offrir ce genre de service ?
L'idée est d'avoir un moyen rapide d'avoir les informations sur une bande de fréquence (GSM, UMTS...) a travers un programme.
Merci d'avance
Martin |
10 11 2015 |
Sam |
Hello,
LTE band 31 is more EALA than CALA although Brasil has shown interest in this frequency band. It was originally used in the Nordics for NMT450 where it was later replaced by CDMA450 which is now migrated to LTE450.
NMT450 was also used in Poland, Russia, Ukraine, Saudi Arabia etc. |
05 11 2015 |
Niviuk |
Added B65 and B66 from draft 3GPP CRs |
02 11 2015 |
Niviuk |
Updated. Added also AWS-4 spectrum into LTE / FCC Spectrum / AWS view |
02 11 2015 |
UE Categories |
There is mis-typed information within the Downlink Categories table, for downlink category 16 under "Maximum number of bits of a DL-SCH transport block received within a TTI" you have
149776 (4 layers, 256QAM)
It should read,
149776 (4 layers, 64QAM)
195816 (4 layers, 256QAM) |
21 10 2015 |
Niviuk |
Hi, I need the arfcn values for this new band to add it in the page. It is not yet available in the 3GPP, may be in December ? |
20 10 2015 |
boettger1 |
Band 66 (AWS-3) is missing. See c |
11 10 2015 |
hnhnhn |
Great |
08 10 2015 |
Niviuk |
Thanks. Added a google custom search on the home page. |
07 10 2015 |
CAFAREL |
Great work. Thanks |
09 09 2015 |
Amir |
Niviuk - very professional and nit site!
how can i search within the web? i find it hard to look for thinks in it...
tnx,
amir |
06 09 2015 |
Niviuk |
Hi Mr Wad, nice to hear from you. Your LTE web pages are useful, with a good graphical design. I did not know how to contact you before doing a copy, and as you may have seen, I added on the web pages it was a copy from your previous web site. I can add your name as the author if you wish, and of course, I will remove the copy if you ask me to do so. Cheers. LG |
06 09 2015 |
Niviuk |
Hi Walter, Ok, I will remove the GSM band numbers |
05 09 2015 |
P.Wad |
Hi. I noticed that this site has a copy of my original LTE resource grid and other tools. That's fine, because I had some bad luck with my old web hosts, and haven't yet found a solution that works for me. I do want to let you know that my web pages are still available at an awfully long Google Drive URL, which can be accessed via:
http://tinyurl.com/pewscorner (then select "LTE stuff" from the menu).
The full URL is:
http://pewscorner.github.io/pages/ |
04 09 2015 |
Walter |
The band numbers in the GSM table are wrong.
Number given in the table refer to the chapter number in 45.005.
Please align with UMTS and LTS bands or remove bands for GSM, to avoid confusions. |
01 09 2015 |
ANON |
Hi,
Can you add some information related to DRX? |
30 08 2015 |
Niviuk |
Hi, from Linkedin, he left Renesas to a medical equipment company, and changed of business. His nice web site has been removed. |
27 08 2015 |
Reza |
No track of Paul WAD ? |
28 07 2015 |
Sébastien |
Dears,
Maybe to be more precise about request on resource grid, it will be more than useful to take into consideration the new transmission mode TM9/10 which induces additional overhead on FDD LTE resource grid (TDD maybe ?).
Indeed, thanks to this new TM, it is possible to perform SU-MIMO 4xn & SU-MIMO 8xn using new reference signals (CSI-RS & DMRS). Hopefully, you will have enough time to add this request into the pipe :)
Cheers, the site is great !
|
14 07 2015 |
Niviuk |
I have added TDD Rel 11 special subframe 9, I did not find any other additional change on the resource grid page. Regards |
07 07 2015 |
Jam |
Thanks for useful knowledge...Can I get the LTE resource grid of Rel 10? Currently, there is that of Rel 8... |
19 06 2015 |
Niviuk |
Hi Mr student, it allows to break the link between UL and DL for the future categories. A device will declare a legacy category common for UL and DL, and may add a specific DL or UL cat. The additional UL/DL cat allows to define new 3GPP Release 12 categories, for instance category 0 for low complexity devices; it may be useful also to indicate new capabilities to the network like the support of UL 64QAM, or just indicate enhanced throughput either in DL or UL.The device should be compliant with the combinations set rules at the bottom of the page. Cheers |
19 06 2015 |
Niviuk |
Hi RFeng, interesting idea, as it may be useful for LTE Unlicensed. I have added a first page, and will expand it while reading some docs on WiFi |
18 06 2015 |
student |
Hello niviuk!
I wonder what is meaf of "Ue-categoryUL and DL" .
The combinations set Table makes me crazy.
could tell me more detail about categoryUL,DL! |
06 06 2015 |
RFeng |
Could you also please add WIFI channels for different BW, MCS#?
Great site. |
20 03 2015 |
Niviuk |
I changed to "AWS-1 +" so that AWS-3 can be used for the new band to come in the 3GPP. Please tell me if there is any other usual naming for B10 |
18 03 2015 |
NT |
LTE Band 10 is mistakenly listed as AWS 1+3, but does not cover the entire gamut up to xx80 MHz. A new superset LTE band is required. |
01 03 2015 |
Niviuk |
Hi Gautam, the umts page is built from several include files. The freq/arfcn info is using a php array that you can export to Excel from this link http://niviuk.free.fr/wls_search.php. The formula to compute arfcn or frequency is displayed in an example at the bottom of the umts_band page. I think that with the export table and the formula, you have all the data to be able to generate the umts tables in any language |
24 02 2015 |
gautam |
umts_band.php how include this php in website...........ue site is very useful |
18 02 2015 |
Niviuk |
Great. I found an archive here : http://nashville.dyndns.org:800/WirelessDownloads/Paul_Wad_Calculators/ , but two images active_RS and inactive_RS were missing.
I was just trying to recreate the images with a script in PHP and GIMP.
Thanks for the tip |
18 02 2015 |
Doug |
Thanks for putting up a copy of the LTE resource grid at: http://niviuk.free.fr/lte_resource_grid.html
There is one image missing, you can grab it at this link: http://web.archive.org/web/20140806212714/http://www.pewscorner.host-ed.me/LTE/inactive_RS.png |
11 02 2015 |
Niviuk |
Hi Disinto, I have tried to add some filtering on the CA spectrum page lte_ca_spectrum.php. I don't find the result convincing, but I added it anyway. You can drop me a mail if it is not what you had in mind. Cheers, LG |
09 02 2015 |
Disinto |
I usually cross check the standardized/future CA pairs here: http://www.3gpp.org/DynaReport/SpecVsWi--36101.htm |
09 02 2015 |
Disinto |
I'm in the telecom business and use your site nearly on a daily basis, especially for CA pairs. Two comments though:
- Can you specify which revision of TS36.101 you consider in your tables? (e.g. 3GPP 36.101 Rel12 June'14
- Would it be possible to have a spectrum graphical view segregated by low band, medium band and high bands? It'd help spotting overlaps more easily (i.e. B38/B41 and B28/B20)
Merci :) |
08 12 2014 |
Niviuk |
Thanks. There is one IOS appli, and also several Android ARFCN calculators, at least new services would need to be added to bring somethnig new to the existing applis. I don't know the mobile software, but if I can help, it is ok |
05 12 2014 |
Hamed |
Have you thought about making a mobile app for your website? I'm in the telecom business and your site is by far one of the best ones out there for center frequency channel calculations and other similar references. Fee free to contact me and maybe we can put something together and share it with the community. |
04 12 2014 |
Nazar |
Nice effort, handy for all RF people |
30 11 2014 |
Niviuk |
Added export of LTE and UMTS bands to CSV format on the page Frequency search |
27 11 2014 |
Niviuk |
Hi,
One question to Mr Paul WAD, author of the unique LTE Grid site http://www.pewscorner.host-ed.me/LTE/lte_resource_grid.html
Your site is suspended
I am wondeing if you could send me the source of your LTE web page so that I add it on this site, with your name as creator, to keep helping LTE engineers
I add this post as I don't have your email address
Thanks
|
29 10 2014 |
Niviuk |
Yes, but Revision E, C.S0057-E_v1.0_Bandclass_Specification from October 2010 |
28 10 2014 |
Andre |
Hi, is this the reference you use for your CDMA to channel # conversion:
http://www.3gpp2.org/Public_html/specs/C.S0057-A_v1.0_060112.pdf |
19 10 2014 |
Niviuk |
Hi, I have switched blocks E and F to align on band 39 and 40. Cheers |
17 10 2014 |
Gast |
UMTS band 39 and 40 looks wrong. Should be same as LTE frequencies |
08 10 2014 |
Niviuk |
OK, it is not always obvious to fill the information about the geographical area where the bands are used. Cheers |
08 10 2014 |
Adrien |
One remark : China is no longer on B38 as MIIT finally decided that B41 would be the main profile for the 2.5 GHz band (just like Japan and US). So B38 is no longer for "China" as mentioned, and I would say that B38 is "EMEA" just like B7 (since they were designed together in the CEPT band plan) |
25 09 2014 |
Niviuk |
Good point. I have fixed it, and added an example
Also updated LTE RRC, S1, X2 asn1 3GPP R12 sept 2014 |
22 09 2014 |
hemant |
your GSM E-GSM frequency table is wrong for 975 to 1024.
check 3GPP |
31 08 2014 |
Niviuk |
Hi, I have enriched the ARFCN range tables with the offset values, and added at the bottom the formulas, with an example. |
28 08 2014 |
Andre |
Could you post the channel formulas on your web site (does not have to be n Excel format). |
30 07 2014 |
Niviuk |
Updated from 3GPP June 2014, and also added decimals for middle frequency |
29 07 2014 |
TorK |
For LTE band 34 it shows the middle frequency as 2017 MHz, but it should be 2017.5 MHz. The half MHz is missing from some other middle frequencies too. |
10 07 2014 |
Niviuk |
Added B32 in UMTS and also LTE RRC Rel 12 |
10 07 2014 |
Holic |
B32 (EU L-band) downlink only band is missing: DL - 1452 - 1496MHz |
02 05 2014 |
hafsa |
Really good page |
25 02 2014 |
Niviuk |
Hi, the site is in php, I don't know how to export in Excel ? Anyhow the formulas to calculate arfcn is easy to find. For LTE, ftp://www.3gpp.org/Specs/latest/Rel-11/36_series/ 36.101 §5.7.3, the downlink frequency FDL = FDL_low + 0.1(NDL – NOffs-DL). Cheers |
23 02 2014 |
Nick |
Thank you for a great website. I was wondering if you could share these formulas in an excel spreadsheet. I would be very grateful. Thank you again! |
09 01 2014 |
Absolute_0 |
Just wanted to say thank you for this site it has been invaluable to me and my walk test teams!
|
08 12 2013 |
Niviuk |
OK, I have fixed it |
08 12 2013 |
Praveen |
Incorrect formula for Band 30,31
Freq(2350) Search returns wrong Earfcn UL (27770) |
29 10 2013 |
Niviuk |
Interesting. Added dual band HSDPA configurations |
25 10 2013 |
neel |
can you add dual carrier channels for umts? |
24 09 2013 |
Niviuk |
Good point, I will change it |
21 09 2013 |
matt |
In the "Store" area of the site, you have mobile country codes listed and a "City" field. Most cities in that field are the capitols of their corresponding country. But I noticed you have "Belfast" listed for the UK. I believe it should be London.
234 United Kingdom of Great Britain and Northern Ireland Belfast
235 United Kingdom of Great Britain and Northern Ireland Belfast |
16 07 2013 |
Niviuk |
Updated ASN1 to 3GPP R11 June 2013 |
15 04 2013 |
niviuk |
A lot of job ! It would need to reorder the asn1 grammar. |
12 04 2013 |
Stefan Blomeier |
hello, it would be great in UMTS/WCDMA(FDD only) to see for some RRC/RB Configuratin and Reconfiguration messages the IE's in common and the different IE's. My favorite would be to compare ActiveSetUpdate, Cell Update Confirm, Radio Bearer Setup, Radio Bearer Setup, Radio Bearer Reconfiguration, Radio Bearer Release, Transport Channel Reconfiguration and Physical Channel Reconfiguration with each other. Then list all IE's common among the afore mentioned 8 RRC messages, then the IE's common between 7 RRC messages and the one RRC having different IE's, then IE's being the same between 6 RRC messages while listing the remaining IE's each of the 2 RRC Messages which are different, then follow up the IE's the 5 RRC messages have in common and list for the 3 RRC messages the IE's which differ and so on. The Idea is to show how redundant the RRC messages are resp. what IE's can be configured and reconfigured by any of the 8 RRC messages and finally also see what IE's are peculiar to certain RRC message(s). That is some sort of analysis about the sensefulness of all these RRC messages mentioned before. Cheers, Stefan |
05 04 2013 |
neel |
thanks for adding the middle channel |
05 04 2013 |
JuSim, PM RF Nokia |
Thanks for your pages, helps a lot quick frequency checks. |
02 04 2013 |
niviuk |
Not too much code to add mid frequency for all the technos. Regards |
28 03 2013 |
Tom |
This is a very helpful tool, but I have the following suggestion to make it better. Please could you add the mid channel number and frequency to all the bands? Very useful for RF testing to have top, middle and bottom channels. Thanks Tom |
10 03 2013 |
niviuk |
OK, I have changed the name of the bands |
08 03 2013 |
Moto man |
Just FYI, the original iDEN 800 MHz SMR band is 806-825 MHz for TX, with RX 45 MHz above. So, if anything, it would be more appropriate to label LTE Band 27 as iDEN rather than Band 26...or delete all references to iDEN. |
05 01 2013 |
niviuk |
Answer to Stefan. The solution I found was to add a button to hide/unhide TDD and MBMS information in the ASN1 grammar. Cheers |
30 09 2012 |
niviuk |
Answer to Neel. Bug fixed : In UMTS, channel search is now allowed in both uplink and downlink |
29 09 2012 |
Stefan Blomeier |
hello, just realized that MBMS is also a feature that up to know almost no Operator wants - except maybe in Japan or China. MBMS failed to get widely accepted. So it is rather nice to keep it separate in the ASN.1 code of WCDMA. As I already suggested to keep the entire TDD-ASN.1 separated from the WCDMA-FDD I would like to encourage also to keep the MBMS ASN.1 related messages and IE's separated. Moreover, TD-SCDMA is the only TDD version having survived, so I rather suggest to have a "chinese" LCR-TDD ASN.1 code. Note that also in Low-Chip-Rate TDD some channels like PDSCH and PUSCH are never used, similar in FDD. Maybe a clean-up of unnecessary ASN.1 IE's is advantageous to provide only the messages and IE's that are really used. That make searches in the WCDMA ASN. 1 simplier. However, there is a thin line between the fully beaty of exhausting information and keeping all stuff in WCDMA-ASN.1 and the practical usefulness. It is my personal opinion of course.
Stefan. |
25 09 2012 |
neel |
your band3 is in correct please check channel=1288 |
24 09 2012 |
author |
Interesting idea. I have written a script that generates the html code from the 3GPP grammar, and it would require to filter the TDD IEs. No obvious filtering algo yet, I will look at it. |
23 09 2012 |
Stefan Blomeier |
hello,
it would be nice to split up the ASN.1 of UMTS RRC in two sections: A) UMTS FDD B) UMTS LCR (TD-SCDMA).
No country uses both versions of UMTS, except maybe China.
So it is rather simplier just see UMTS FDD messages and IE's without that TDD stuff.
You Web-page is cool - useful.
cheers, mate. |
03 09 2012 |
author |
Effectivement, mais on trouve des infos sur plusieurs sites web dont les sites FCC US |
21 08 2012 |
laurent |
Bonjour, où avez-vous trouvé les noms des bandes ? Dans les specs 3GPP, il n'y a que les n°. Sinon vraiment merci car c'est plus compréhensible pour référencer une bande que les n°. |
05 08 2012 |
author |
Merci, et maintenant une petite pause estivale |
04 08 2012 |
Rike |
Je ne sais pas si vous êtes au courant, mais votre site est devenu le site de facto pour les ingenieurs dans le "Test and Measurement" pour les calculs de canaux pour LTE. Chapeau et bonne continuation! |
27 07 2012 |
author |
Hi, 36.101 for LTE and 25.101 for WCDMA.
Added US WCS band plan |
25 07 2012 |
Sam |
Hey! Cool info, i was wondering where can I double check info for the channel number in the lower 700 MHz band, do you have a 3GPP ref ? |
23 03 2012 |
author |
I will check, UMTS bandwidth is 5MHz, so probably linked to the carrier frequency close to the 2.5MHz band edge |
20 03 2012 |
smj |
Unless you are using specific country frequency allocation, you made a mistake in the UMTS frequency range Band V. It should start from 824MHz |
01 01 2012 |
author |
Band selection fixed |
27 12 2011 |
Leon |
LTE Band 7 appears twice in the selection. Is that a mistake? |
25 12 2011 |
author |
Tried, but the page becomes quite heavy and uneasy to read. Did not keep it |
20 12 2011 |
neelesh raj |
when we pick lte freq band it shows us the low and high channel, would it possile to also show the middle channel |
17 10 2011 |
author |
Not found in 3GPP but band 6 addded |
14 10 2011 |
Ashish |
Do you have updates on Japan LTE allocation around 895-905MHz?? |
16 09 2011 |
author |
Code fixed |
08 09 2011 |
Stefan |
In LTE calculator there is a mistake in Band 5 and 1.4 Mhz BW for the calculation. You can put in 869.8 and it automatically switches to another frequency = 869.7 Mhz with the corresponding earfcn. |
22 07 2011 |
author |
Updated June 2011 |
17 05 2011 |
Hans |
Hi,
I think there is a mistake in band 10, the downlink frequency is noted the same as for Band 4. Could you check that please? According to my information it should be 1805-1875,5 MHz. Thanks. |
06 02 2011 |
author |
Changed and updated R9 |
| 301 .. 400 | ||