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DaQue
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I trying to figure out how much mire data a full 3 band lte site would be compared to 3g. 800/1900 Lte what 12x each over evdo? 24x for the td-lte? That would be 1+12+12+24 or 49x what I am used to.

 

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Maximum bandwidth of a single EV-DO carrier is ~3.2 Mbps. Three sectors/carrier makes that ~9.6 Mbps.

 

Maximum bandwidth of a single 5x5 FDD-LTE carrier is ~37 Mbps. Three sectors/carrier makes that ~111 Mbps. Multiply that by two (as Sprint has a 5x5 on 1900 MHz PCS G Block and a 5x5 on 800 ESMR), to get ~222 Mbps.

 

I have no idea what the bandwidth of a 20 MHz 3:2 TDD-LTE carrier is. Someone else will have to answer that (so I can memorize the answer and how the math works).

 

It's difficult to assign a "multiplier" to this, as different cell sites have differing numbers of EV-DO carriers.

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I have no idea what the bandwidth of a 20 MHz 3:2 TDD-LTE carrier is. Someone else will have to answer that (so I can memorize the answer and how the math works).

 

I covered the basic 20 MHz TDD math a few weeks ago in this post:

 

http://s4gru.com/index.php?/topic/4083-sprint-td-lte-25002600mhz-discussion/?p=158089

 

AJ

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Don't forget to add in a bit for the voice carriers

 

Sent from my SPH-L900 using Tapatalk 4 Beta

Welp, I'm gonna need to know how much bandwidth a 1X carrier has now...

 

I covered the basic 20 MHz TDD math a few weeks ago in this post:

 

http://s4gru.com/index.php?/topic/4083-sprint-td-lte-25002600mhz-discussion/?p=158089

 

AJ

Aha! Exactly what I needed. So ~222 Mbps + (90 Mbps) * 3 [we're still splitting in to three sectors, right?] = ~492 Mbps. So that's ~51.2 times more bandwidth than a single EV-DO carrier.

 

Edit: I suppose I should update my math for proper sigfigs. (37.5) * 3 * 2 + (90.0) * 3 = 495, or ~51.6 times.

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Welp, I'm gonna need to know how much bandwidth a 1X carrier has now...

 

Aha! Exactly what I needed. So ~222 Mbps + (90 Mbps) * 3 [we're still splitting in to three sectors, right?] = ~492 Mbps. So that's ~51.2 times more bandwidth than a single EV-DO carrier.

 

Edit: I suppose I should update my math for proper sigfigs. (37.5) * 3 * 2 + (90.0) * 3 = 495, or ~51.6 times.

 

Ah, but that total is like simultaneous orgasm on all carriers and airlinks.  And we know that never occurs in the real world.

 

;)

 

AJ

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Ah, but that total is like simultaneous orgasm on all carriers and airlinks.  And we know that never occurs in the real world.

 

;)

 

AJ

Wireless nerd porn? :P

 

So, what could we expect for "reliable" backhaul to tri-band Sprint sites? We're still short of 500 Mbps, even with all that, and there's almost never a situation where, like you said, you can get maximum speed on everything at once. So 400 Mbps? I couldn't even begin to estimate. Apparently 100 Mbps is good enough for a 5x5 + EV-DO + 1X.

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Welp, I'm gonna need to know how much bandwidth a 1X carrier has now...

 

Aha! Exactly what I needed. So ~222 Mbps + (90 Mbps) * 3 [we're still splitting in to three sectors, right?] = ~492 Mbps. So that's ~51.2 times more bandwidth than a single EV-DO carrier.

 

Edit: I suppose I should update my math for proper sigfigs. (37.5) * 3 * 2 + (90.0) * 3 = 495, or ~51.6 times.

Still don't have EVDO and 1xA traffic in there, so toss on a few more Mbps

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Still don't have EVDO and 1xA traffic in there, so toss on a few more Mbps

Well, the original question was how many times over "3G EV-DO", which as I pointed out early, is difficult to figure out, as sites have differing numbers of EV-DO carriers. So, I just calculated LTE compared to a single EV-DO carrier. 1X and 1XA aren't going to change that number much, maybe not even within a sigfig - and again, different sites may have different number of 1X 1900 carriers.

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