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T-Mobile LTE & Network Discussion V2

lilotimz

By lilotimz
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danlodish345 Member Level: LTE Advanced

danlodish345

Posted
Posted

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

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The bottom line for me is if ALL video streaming was being throttled, why even require content providers subscribe and be approved by T-Mobile? All video that was being throttled should have counted

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Legere's blog post was very misleading. He made it seem the national map was LTE coverage. Either native or through partners. We know it's not LTE coverage.   And not only is it EDGE in the Dakot

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reedacus25 Member Level: 1x Advanced

reedacus25

Posted
Posted

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.

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reedacus25 Member Level: 1x Advanced

reedacus25

Posted
Posted

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

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Ascertion Member Level: LTE Advanced

Ascertion

Posted
Posted

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?
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danlodish345 Member Level: LTE Advanced

danlodish345

Posted
Posted

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

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jeffcarp Member Level: 3G EVDO

jeffcarp

Posted
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ba11dee0af1f1077980d5cd1acc3126e.jpg a lot of spectrum

 

Sent from my SM-G928P using Tapatalk

Is that a public information source showing in that screenshot?
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Ascertion Member Level: LTE Advanced

Ascertion

Posted
Posted

Is that a public information source showing in that screenshot?

https://fusiontables.googleusercontent.com/fusiontables/embedviz?q=select+col4%3E%3E1+from+1QRWhoJI2BcVfirrulrStm5TbBsi6qM0X07XKTGyc&viz=MAP&h=false&lat=40.38475096831533&lng=-96.83050306627153&t=1&z=5&l=col4%3E%3E1&y=2&tmplt=2&hml=KML
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RAvirani Member Level: LTE Advanced

RAvirani

Posted
Posted

Wow - are there maps like these for other carriers?

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ingenium Member Level: 4G WiMax

ingenium

Posted
Posted

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

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danlodish345 Member Level: LTE Advanced

danlodish345

Posted
Posted

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

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WiWavelength Member Level: LTE Advanced

WiWavelength

Posted
Posted

How many antennas are in San Diego

 

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

 

AJ

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WiWavelength Member Level: LTE Advanced

WiWavelength

Posted
Posted

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

 

The home office in Butte, MT.

 

AJ

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bigsnake49 Member Level: LTE Advanced

bigsnake49

Posted
Posted (edited)

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
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