Jump to content

T-Mobile LTE & Network Discussion V2


lilotimz

Recommended Posts

For GSM, here's what I saw this morning:

 

687

688

689

709

711

712

713

714

734

735

 

- Trip

So are they making room for a GSM and lte channel or are they doing 2G refarming?

 

Sent from my SAMSUNG-SM-G891A using Tapatalk

Link to comment
Share on other sites

For GSM, here's what I saw this morning:

 

687

688

689

709

711

712

713

714

734

735

 

- Trip

 

With EARFCN of 1025, you have a 5 MHz carrier, centered at 1972.5, extending from 1970-1975.

 

GSM channels, being 200 kHz wide, ARFCN 711 is centered at 1970 exactly, with 712 at 1970.2, 713 at 1970.4, 714 at 1970.6, 734 at 1974.6, and 735 at 1974.8. So we clearly have overlapping GSM with LTE, likely by way of selective resource block shutdown.

 

Oddly, UARFCN of 587 is centered at 1967.5, and Ericsson generally can reduce UMTS bandwidth to 4.2 MHz wide, which would be 1965.4-1969.6, though I have heard that Ericsson has recently matched Nokia in being able to achieve stable 3.8 MHz wide UMTS carriers. The reason this must be a 3.8 MHz carrier is because at both bookends, you have GSM carriers, at 688 (and 689) and 709 and 1965.4 and 1969.6 precisely.

 

So assuming 3.8 MHz wide U1900 carrier, 689 is still right at the end of the carrier, so something strange is definitely going on.

 

Either way, they're stuffing GSM into the LTE carrier (it looks like), which is pretty crazy and exciting.

  • Like 2
Link to comment
Share on other sites

That's really odd. Head scratcher.

 

T-Mobile has a TON of spectrum in Jacksonville, with 50 MHz of AWS-1 and 20 MHz of A block and 30 MHz of C block.

 

This 10 MHz carrier is using up the full A block.

 

In my mind it makes far more sense to deploy in the C block, even if just at 10 MHz, because you have the runway to get to 15 MHz wide.

 

They could easily have 1c U2100, at least 1c U1900, 5 MHz of GSM, 20 MHz L2100, 15 MHz L1900, and 5 MHz L700.

 

That's a conservative approach. Considering that they've been moving quickly to 1 UMTS carrier in lots of markets.

 

 

Sent from my iPhone using Tapatalk

Link to comment
Share on other sites

That's really odd. Head scratcher.

 

T-Mobile has a TON of spectrum in Jacksonville, with 50 MHz of AWS-1 and 20 MHz of A block and 30 MHz of C block.

 

This 10 MHz carrier is using up the full A block.

 

In my mind it makes far more sense to deploy in the C block, even if just at 10 MHz, because you have the runway to get to 15 MHz wide.

 

They could easily have 1c U2100, at least 1c U1900, 5 MHz of GSM, 20 MHz L2100, 15 MHz L1900, and 5 MHz L700.

 

That's a conservative approach. Considering that they've been moving quickly to 1 UMTS carrier in lots of markets.

 

 

Sent from my iPhone using Tapatalk

Aren't they preparing to swap the C block with Sprint in the PCS swaps?
  • Like 1
Link to comment
Share on other sites

ba11dee0af1f1077980d5cd1acc3126e.jpg a lot of spectrum

 

Sent from my SM-G928P using Tapatalk

Oh wow they make T-Mobile new Jersey market look spectrum starved we have only 43 MHz of spectrum here...no AWS-3 spectrum purchased here

 

Sent from my XT1575 using Tapatalk

Link to comment
Share on other sites

ba11dee0af1f1077980d5cd1acc3126e.jpg a lot of spectrum

 

Sent from my SM-G928P using Tapatalk

Is that a public information source showing in that screenshot?
Link to comment
Share on other sites

Wow - are there maps like these for other carriers?

San Francisco has a map with every RF antenna in the city. You can filter by carrier. https://fusiontables.google.com/DataSource?docid=1jgD0NwaO_dLNhIkjaANj_2fzV9WFwLDGgb8uM57x#map:id=3

 

Was last updated April 2015 though.

 

Sent from my Nexus 6P

Link to comment
Share on other sites

San Francisco has a map with every RF antenna in the city. You can filter by carrier. https://fusiontables.google.com/DataSource?docid=1jgD0NwaO_dLNhIkjaANj_2fzV9WFwLDGgb8uM57x#map:id=3

 

Was last updated April 2015 though.

 

Sent from my Nexus 6P

How many antennas are in San Diego

 

Sent from my XT1575 using Tapatalk

Link to comment
Share on other sites

How many antennas are in San Diego

 

How would he know?  He mentioned San Francisco, not San Diego.  Go ask Carmen.

 

AJ

Link to comment
Share on other sites

OK :) lol I like your sense of humor and what market are you from AJ

 

The home office in Butte, MT.

 

AJ

Link to comment
Share on other sites

San Francisco has a map with every RF antenna in the city. You can filter by carrier. https://fusiontables.google.com/DataSource?docid=1jgD0NwaO_dLNhIkjaANj_2fzV9WFwLDGgb8uM57x#map:id=3

 

Was last updated April 2015 though.

 

Sent from my Nexus 6P

 

I wonder why they have not decommissioned the Nextel sites? Well they show they are decommissioned but why are they still listing them. Has sprint decommissioned them but have not removed the equipment?

Edited by bigsnake49
Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


  • large.unreadcontent.png.6ef00db54e758d06

  • gallery_1_23_9202.png

  • Similar Content

  • Posts

    • S23 and S24 (at least ultra versions) have 4xCA NR. I currently have n41+n41+n25+n71 most places I go.  I think select devices have 2xCA upload but I do not think it is in widespread use yet. CA is still mostly download focused.
    • If they use n41 + n41 2CA, people that are somewhat distant from the cell site will have an OK download but the upload will be a disaster.  Upload capability on b-41 was always a disaster on the old Sprint Network.   Now, with n25 + n41 combination, even the more distant users have a more decent upload.  I see n41 + n41 + n25 now with my S22 and I understand that we will see 4xCA with newer phones in the future.     I also see n41 + n41 + n71 sometimes too. Also some other combinations of 25, 41, 71.  I would think that eventually we will see AWS paired with n41 too.  What I am not sure of is ----  when I see 3xCA on my S22, I can see the 3 channels involved in the download but I am never sure just what I have on the upload. I do not think I have 3xCA on the upload.
    • I don't know enough about the nuts and bolts of NR to know the answer, but is there a reason they're not doing two overlapping 100 MHz n41 carriers and using selective resource shutoff to make each one 97 MHz?  Thus making use of the full 194 MHz instead of leaving 4 MHz unused as implied by the current standard 100+90 configuration? - Trip
    • Looks like another T-Mobile 5G bump happened over the past week and a half, maybe less: n41 carriers are now 90+100 MHz, up from 80+100 (which in turn is up from 40+100 back in early March). This is on top of the new n25 carrier recently. As part of this, it looks like T-Mobile is starting to prefer n25+n41 2CA even when pushing data, rather than having higher levels of CA that would hit higher peak speeds; at least indoors I need to force n41-only if I want to see the full 190 MHz there. To be fair the speeds are plenty quick with that amount of spectrum, and I'm sure they're load balancing, and my guess is this is a little better for battery life? With this expansion, they're now at 10x10+10x10 n25, 15x15 n71, 100+90 n41, for a total of 260 MHz (including FD uplink) of deployed NR here, up from 250 MHz a week ago, 230 MHz two weeks ago, and 190 MHz six months ago. VZW is at 140 MHz minus mmW, 170 if you count n2 DSS. AT&T is at 150 MHz (80+40 n77, 15x15 n5), 210 MHz I think if you count n2 and n66 DSS (guessing they're still running those). With this level of spectrum they should be able to continue offering home internet wherever. Guessing this is the last upgrade they can make before they need to throw new equipment on sites for C-Band. At this rate I figure that'll happen next year on a few dozen high-traffic sites.
    • https://www.lightreading.com/wireless/tds-telecom-to-launch-mobile-service-via-nctc-s-mvno Surprising given merger.
  • Recently Browsing

    • No registered users viewing this page.
×
×
  • Create New...