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How to Spot Sprint Antennas and RRUs (Samsung)

Network Vision Sprint Samsung RRU remote radio units antennas

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#141 austintyppo

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Posted 02 December 2014 - 06:12 PM

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. 



#142 awsum gam3r

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Posted 11 May 2015 - 12:43 PM

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

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Posted Image B) B) B)


#143 RAvirani

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Posted 15 January 2017 - 11:59 AM

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?

#144 lilotimz

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Posted 15 January 2017 - 01:22 PM

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.

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#145 RAvirani

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Posted 15 January 2017 - 01:34 PM

MIMO.

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

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

#146 lilotimz

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Posted 15 January 2017 - 02:43 PM

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.

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#147 RAvirani

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Posted 15 January 2017 - 05:08 PM

The transmit path is shared.

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

#148 JWMaloney

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Posted 15 January 2017 - 06:59 PM

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.
<p><span style="font-size:10px;">Framily is full, thanks guys!</span>

#149 lilotimz

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Posted 15 January 2017 - 07:11 PM

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.

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