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lilotimz

How to Spot Sprint Antennas and RRUs (Samsung)

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darickster09    155

Sorry I got mixed up.  Was on mobile and didnt noticed that i was posting in a non member area...  It wont happen again.  But to me looking up i didnt see any wires coming from many of the antennas.  And the site ID did not come from S4GRU.  I got it at the site.  It was on a sight behind the fence at the site.  Thanks for the info.  Is it hard for them to hide the cables behind the equipment?  I mean to my eyes it looked as if hardly any of those antennas had any wires coming off of them.  I wish i had my binoculars when i was out yesterday.

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darickster09    155

Zooming in on the pictures on my computer once i got them from my phone it seems I see 1 wire going into the back of the antennas?  is that how they actually are?  the original 1900 LTE antennas?

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lilotimz    10,867

Zooming in on the pictures on my computer once i got them from my phone it seems I see 1 wire going into the back of the antennas?  is that how they actually are?  the original 1900 LTE antennas?

 

Please consult original post Canadian IBEZ special case setup. 

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darickster09    155

that is awesome!  thank you for the information lilotimz!

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mhammett    612

On towers I've personally built out, I can rarely see the cables that I know are there from the ground.

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darickster09    155

yeah after looking at other pictures i notice the same so i assume that 1 cable is the only one needed to goto those antennas.

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darickster09    155

Hey guys so today i ventured to an LTE site I had yet to venture to due to its location and saw the paperwork that was at that site attached to the fence in a plastic ziplock baggie.  So i noticed on the front page it said "SPRINT NETWORK VISION MMBS LAUNCH"  so what exactly is MMBS?  I noticed that this site was only a B25 site with sub par speeds, and of note this site was also in the middle of nowhere, very minimal amount of people there in that area.  The site ID is SE54XC084 if anyone was interested.  And at the site there were 2 cabinets, with 3 more base mount slots for 3 more cabinets if that helps.  I noticed the last person who had been there was the inspector for some work they had done previously.  The date was 7/23/2014.  so very recent.  Ill upload a picture of something else I am curious about in a little bit that i noticed at the site.  Thanks in advance.

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lilotimz    10,867

Hey guys so today i ventured to an LTE site I had yet to venture to due to its location and saw the paperwork that was at that site attached to the fence in a plastic ziplock baggie.  So i noticed on the front page it said "SPRINT NETWORK VISION MMBS LAUNCH"  so what exactly is MMBS?  I noticed that this site was only a B25 site with sub par speeds, and of note this site was also in the middle of nowhere, very minimal amount of people there in that area.  The site ID is ------- if anyone was interested.  And at the site there were 2 cabinets, with 3 more base mount slots for 3 more cabinets if that helps.  I noticed the last person who had been there was the inspector for some work they had done previously.  The date was 7/23/2014.  so very recent.  Ill upload a picture of something else I am curious about in a little bit that i noticed at the site.  Thanks in advance.

 

 

ze0OU5l.jpg

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darickster09    155

Ah so its the cabinet then?  Now I feel so dumb...  We use similar cabinets like this where I work for our fiber optics...  So i totally should of caught onto that.  Epic Fail on my part :(

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lilotimz    10,867

Ah so its the cabinet then?  Now I feel so dumb...  We use similar cabinets like this where I work for our fiber optics...  So i totally should of caught onto that.  Epic Fail on my part :(

 

MMBS = multi standard base station from Samsung

BBU = backup battery unit

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vlee    32

One day, someone will accidentally crack open one of those panels and then we can see what all those little antennas inside look like. 

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lilotimz    10,867

One day, someone will accidentally crack open one of those panels and then we can see what all those little antennas inside look like. 

 

ahem.

 

http://s4gru.com/index.php?/topic/3760-ever-wonder-whats-inside-one-of-those-big-cellular-panel-antennas/

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austintyppo    1

Anyone have any idea whose these are? In case it is not clear, these are three seperate towers that are temporary towers at the University of the Pacific in Stockton, CA because the football stadium was demolished. I think that the tallest is an old MetroPCS tower that is now T-Mobile, the one with one panel per sector is Sprint and the middle with 2 panels per sector is Verizon. Am I right? How can you tell? Here are the pictures: http://imgur.com/plRwH6C http://imgur.com/zjGqxKa http://imgur.com/Kr8vWIV http://imgur.com/LeTZviu http://imgur.com/ytA6UTo http://imgur.com/nbxRn1r http://imgur.com/Qn8OnjD http://imgur.com/fqY01gl http://imgur.com/Sx0Vl1l 

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lilotimz    10,867

Anyone have any idea whose these are? In case it is not clear, these are three seperate towers that are temporary towers at the University of the Pacific in Stockton, CA because the football stadium was demolished. I think that the tallest is an old MetroPCS tower that is now T-Mobile, the one with one panel per sector is Sprint and the middle with 2 panels per sector is Verizon. Am I right? How can you tell? Here are the pictures: http://imgur.com/plRwH6C http://imgur.com/zjGqxKa http://imgur.com/Kr8vWIV http://imgur.com/LeTZviu http://imgur.com/ytA6UTo http://imgur.com/nbxRn1r http://imgur.com/Qn8OnjD http://imgur.com/fqY01gl http://imgur.com/Sx0Vl1l 

 

This one is Sprints. Note the RRUs are the same ones in the first post of this thread and the antennas have 6 RF jumper ports. 

 

plRwH6C.jpg

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austintyppo    1

This one is Sprints. Note the RRUs are the same ones in the first post of this thread and the antennas have 6 RF jumper ports. 

 

Whose are 

 

This one is Sprints. Note the RRUs are the same ones in the first post of this thread and the antennas have 6 RF jumper ports. 

 

 

 

Whose are the other ones?

 

ATT, Verizon, Tmobile.. ie. the other 3 that services the area. 

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awsum gam3r    56

upgraded cabinet On the left(from the one's in the picture), what ever is in this one.

mjsi9z.jpg

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RAvirani    759

I don't know much about physical antennae but was a bit curious as to how the connectors at the bottom of the antenna were organized. From what I understand, NV panels have 4 PCS ports and 2 SMR ports. Why those numbers specifically? Why couldn't they just have 1 PCS and 1 SMR port?

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lilotimz    10,867

I don't know much about physical antennae but was a bit curious as to how the connectors at the bottom of the antenna were organized. From what I understand, NV panels have 4 PCS ports and 2 SMR ports. Why those numbers specifically? Why couldn't they just have 1 PCS and 1 SMR port?

MIMO.

 

You need multiple antennas. Standard nowadays is 2T2R which requires two separate transmit and receive oaths at the eNB and UE.

 

Sent from my Pixel using Tapatalk

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RAvirani    759

MIMO.

 

You need multiple antennas. Standard nowadays is 2T2R which requires two separate transmit and receive oaths at the eNB and UE.

 

Sent from my Pixel using Tapatalk

Ok so PCS: 2 ports for LTE, 1 port for EVDO/eHRPD, 1 port for 1x; SMR: 2 ports for LTE...what about 1x800?

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lilotimz    10,867

Ok so PCS: 2 ports for LTE, 1 port for EVDO/eHRPD, 1 port for 1x; SMR: 2 ports for LTE...what about 1x800?

The transmit path is shared.

 

Sent from my Pixel using Tapatalk

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RAvirani    759

The transmit path is shared.

 

Sent from my Pixel using Tapatalk

Why doesn't Sprint do that on PCS? If they shared the transmit path there, they could do 4x4 without a second antenna…

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JWMaloney    769

Why doesn't Sprint do that on PCS? If they shared the transmit path there, they could do 4x4 without a second antenna…

The RRH has a limit to the number of carriers that can share a transmit path. For example, the Ericsson RRUS 35 supports a maximum of two LTE and six CDMA carriers simultaneously, but no more than 4 carriers can share any single transmit path. So to run the maximum number of carriers, you'll have two LTE and two CDMA carriers on one set of paths and four CDMA carriers on the other set.

 

There's actually a site in Central, Lousiana that does run 4x4 MIMO with a single RRH and antenna, but it's only running one LTE carrier and presumably no more than 3 CDMA carriers.

 

EDIT: I just noticed this was in the Samsung thread, so perhaps someone who is more familiar with that equipment could offer more details about its specific limitations.

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lilotimz    10,867

The RRH has a limit to the number of carriers that can share a transmit path. For example, the Ericsson RRUS 35 supports a maximum of two LTE and six CDMA carriers simultaneously, but no more than 4 carriers can share any single transmit path. So to run the maximum number of carriers, you'll have two LTE and two CDMA carriers on one set of paths and four CDMA carriers on the other set.

 

There's actually a site in Central, Lousiana that does run 4x4 MIMO with a single RRH and antenna, but it's only running one LTE carrier and presumably no more than 3 CDMA carriers.

 

EDIT: I just noticed this was in the Samsung thread, so perhaps someone who is more familiar with that equipment could offer more details about its specific limitations.

It's a similar deal with all of sprints dual rat equipment.

 

Sent from my Pixel using Tapatalk

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