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This is a sub-selection from LTE has been here, FYI

iansltx

join:2007-02-19
Austin, TX
kudos:2
reply to koolman2

Re: LTE has been here, FYI

18 Mbps up means it's definitely 10x10. 5x5 can't hit more than 13.5 Mbps up without MIMO or higher QAM modulations, neither of which are in current phones.

chgo_man99

join:2010-01-01
San Jose, CA
said by iansltx:

18 Mbps up means it's definitely 10x10. 5x5 can't hit more than 13.5 Mbps up without MIMO or higher QAM modulations, neither of which are in current phones.

Are you sure?

I have at&t and live in chicagoland and heard in chicago area they only got 5x5, and in most places I get around 10mb/s but when I am in o'hare I get >30mb/s. Even in some pockets of downtown I get speeds above 20mb/s sometimes.


JamesPC

join:2005-10-12
Orange, CA
said by chgo_man99:

said by iansltx:

18 Mbps up means it's definitely 10x10. 5x5 can't hit more than 13.5 Mbps up without MIMO or higher QAM modulations, neither of which are in current phones.

Are you sure?

I have at&t and live in chicagoland and heard in chicago area they only got 5x5, and in most places I get around 10mb/s but when I am in o'hare I get >30mb/s. Even in some pockets of downtown I get speeds above 20mb/s sometimes.

According to the FCC, AT&T has only 12Mhz of 700Mhz spectrum in Los Angeles and Orange County (same for chicago). Thus, AT&T is using 5x5 LTE in that area. However in San Diego County, AT&T has 24Mhz of 700Mhz spectrum, thus allowing them to use 10x10 LTE.

Edit: And this is basically to the point about AWS. The plan in the near future is to supplement "spectrum-starved" areas such as LA/OC with AWS (1700Mhz down/2100Mhz up) spectrum, which AT&T has plenty of (and why the AT&T iPad has 2 LTE frequencies compared to the Verizon one.)


koolman2
Premium
join:2002-10-01
Anchorage, AK
Quick note: AWS is 2100 down 1700 up.

iansltx

join:2007-02-19
Austin, TX
kudos:2
reply to chgo_man99
Down or up? 5x5 can hit 35 Mbps down in real-world (albeit ideal) conditions and 13 Mbps up in similar conditions (I've seen exactly that on my phone), but that's it. 10x10 can more or less double that.


JamesPC

join:2005-10-12
Orange, CA
reply to koolman2
said by koolman2:

Quick note: AWS is 2100 down 1700 up.

Ahh, yes thanks for the correction.

chgo_man99

join:2010-01-01
San Jose, CA
reply to iansltx
said by iansltx:

Down or up? 5x5 can hit 35 Mbps down in real-world (albeit ideal) conditions and 13 Mbps up in similar conditions (I've seen exactly that on my phone), but that's it. 10x10 can more or less double that.

I remember I hit once as high as 47.62 mb/s but that was at O'hare airport. Speeds at the airport have been consistently higher than anywhere else I have seen.

p.s. wifi in ohare is also very fast but its paid.

iansltx

join:2007-02-19
Austin, TX
kudos:2
Maybe they have 10x10 AWS LTE there?