Jump to content

LTE-A, Carrier Aggregation, '5G', etc...


kyle_4thousand

Recommended Posts

I thought I would start a topic to discuss things such as LTE-A / Carrier Aggregation and '5G' technologies. We all know Sprint is planning on using CA with their 2.5 deployments, however I am curious to learn about what other carriers are doing as well.I know AT&T is actively using CA now, so I am told, and there are a number of devices currently capable of taking advantage of this. 

 

With that said, I am also curious to know if Sprint's current equipment is capable - and if the company is willing - to aggregate multiple PCS LTE channels in places like the Shentel and Chicago markets. Possibly even a step further with SMR LTE, although unlikely from what I've read in previous discussions. I have heard that AT&T (and maybe VZW?) are aggregating 700/CLR/PCS/AWS spectrum. Has anyone experienced this yet in the field?

 

Another point of discussion is '5G'. I briefly remember hearing about how they are going about doing 5G, which would be something crazy like advanced MIMO tech and high frequency spectrum deployments (5000 Mhz  +). Is anyone aware if Sprint is exploring this? Or if any other carriers are moving forward with this technology?

  • Like 2
Link to comment
Share on other sites

Cough

 

http://s4gru.com/index.php?/topic/6521-aggregating-both-tdd-fdd/?p=373074

 

 

For carrier aggregation, I typically just refer to the carrier and supplemental carrier, but the 3GPP terms/acronyms are primary component carrier (PCC) and secondary component carrier (SCC).

 

Now, it is important that the PCC have propagation characteristics that are better than or equal to those of the SCC.  Otherwise, the PCC fails before the SCC.  In that case, the entire link fails, and the network must be reacquired.

 

CA03.jpg

 

http://www.3gpp.org/technologies/keywords-acronyms/101-carrier-aggregation-explained

 

So, apply this to Sprint.  The band 26 carrier would have to be the PCC, while the band 25 carrier would have to be the SCC.  But Sprint does not want that configuration.  Band 26 is not to be primary; it is to be secondary -- used for coverage, not capacity.

 

See the problem?

 

AJ

 
Link to comment
Share on other sites

There have been reports on Carrier Aggregation on AT&T and T-Mobile so far. They've already started seeding the market with Cat 4 CA capable devices.

Verizon and Sprint are probably waiting for Cat 6 device market to mature before they activate CA feature on the network side, since 2x aggregated capacity on both operators will (for the most part) exceed 40MHz Cat 4 limitation.

Verizon and Sprint will also benefit from 3x CA user equipment that is due H2 2015. Sprint with 3x B41, and Verizon with B13+B4+B2.

Link to comment
Share on other sites

There are reports on Carrier Aggregation on AT&T and T-Mobile so far. Verizon and Sprint are probably waiting for Cat 6 device market to mature before they activate CA feature. Verizon and Sprint will also benefit from 3x CA user equipment that is due H2 2015.

 

Whilst I don't think you are wrong, I think they are also waiting and keeping it ready to deploy as the next 'feature' to drive sales. Right now they are harping on about 'xlte', as soon as that loses impact and they need something else to spur sales they will roll out CA after giving it a name concocted by the marketing dept on a rafting expedition and bonding weekend on the LA river. 

  • Like 1
Link to comment
Share on other sites

I know Sprint has started doing this in Kansas City, but I thought Sprint was supposed to start deploying multiple band 41 carriers nationwide starting soon. While this will create the ability to bond 20mhz channels together, can't they function just fine on their own by placing a customer on the less-burdened carrier?

 

 

Sent from my iPhone 6

Link to comment
Share on other sites

I know Sprint has started doing this in Kansas City, but I thought Sprint was supposed to start deploying multiple band 41 carriers nationwide starting soon. While this will create the ability to bond 20mhz channels together, can't they function just fine on their own by placing a customer on the less-burdened carrier?

Sprint had said they would be turning on a second B41 carrier by the end of this year, and a third sometime next year. 2014 is almost over, so they do seem to be a bit behind schedule with that. Hopefully they will opt to jump straight to 3+ carriers when they start adding them next year.

 

Also, yes, UE not capable of CA will still benefit from the increased capacity provided by additional B41 carriers, much like we have seen around Chicago with the second B25 carrier. This is because the NV equipment supports LTE multi-carrier technology for dynamic load balancing of connections between all available bands and carriers within a given serving cell/sector.

  • Like 2
Link to comment
Share on other sites

I know Sprint has started doing this in Kansas City, but I thought Sprint was supposed to start deploying multiple band 41 carriers nationwide starting soon. While this will create the ability to bond 20mhz channels together, can't they function just fine on their own by placing a customer on the less-burdened carrier?

 

 

Sent from my iPhone 6

I've only actually found the second carrier at the site by the stadiums. I haven't seen it anywhere else in the city so far. Additionally, the second carrier was being broadcast by clear equipment, so I don't believe carrier aggregation would have been possible anyway.

 

Sent from my Nexus 5

Link to comment
Share on other sites

I've only actually found the second carrier at the site by the stadiums. I haven't seen it anywhere else in the city so far. Additionally, the second carrier was being broadcast by clear equipment, so I don't believe carrier aggregation would have been possible anyway.

 

Sent from my Nexus 5

 

I still think it sucks a bit that Clear equipment doesn't support CA. That'll leave a few big cities in the dust, most notably NYC since nearly the whole city is covered in Clear equipment.

  • Like 1
Link to comment
Share on other sites

I still think it sucks a bit that Clear equipment doesn't support CA. That'll leave a few big cities in the dust, most notably NYC since nearly the whole city is covered in Clear equipment.

 

But if the short-term goal is to provide a consistent experience for the user, and not get stuck on overloaded B41, having two carriers up is perfectly fine. 

  • Like 2
Link to comment
Share on other sites

Verizon and Sprint will also benefit from 3x CA user equipment that is due H2 2015. Sprint with 3x B41, and Verizon with B13+B4+B2.

 

Where does VZW have carrier aggregation capable band 13 infrastructure?  Most of it is old, non RRU, Release 8 infrastructure.

 

AJ

Link to comment
Share on other sites

Hopefully the 88r supply issues will be gone by the time 3xCA is implemented so that current cities with big Clearwire overlays can be covered in CA-capable gear quickly. Both 3xCA and the supply issues are supposed to be done by 2H2015, right?

Link to comment
Share on other sites

Where does VZW have carrier aggregation capable band 13 infrastructure?  Most of it is old, non RRU, Release 8 infrastructure.

 

AJ

You're absolutely right, but waiting for Cat 6/9 device market to mature gives them slightly more time to perform the necessary upgrades. That Droid Turbo (Cat 4) for instance has CA enabled B13+B4, but it's obviously useless in markets where Verizon has 15, 20MHz of contiguous AWS spectrum deployed. I can see them initially prioritizing CA infrastructure upgrades in markets where they only hold 10MHz AWS spectrum licenses.

Link to comment
Share on other sites

Where does VZW have carrier aggregation capable band 13 infrastructure?  Most of it is old, non RRU, Release 8 infrastructure.

 

AJ

 

A growing number of them (and atts) are Rel 10/11 rip and replaces where they strip the entire legacy site down and rebuild with new Alcatel-Lucent or Ericsson equipment. Typically it's the oldest sites or the highest capacity sites that are being renovated first. 

Link to comment
Share on other sites

A growing number of them (and atts) are Rel 10/11 rip and replaces where they strip the entire legacy site down and rebuild with new Alcatel-Lucent or Ericsson equipment. Typically it's the oldest sites or the highest capacity sites that are being renovated first. 

Like this one? http://s4gru.com/index.php?/topic/6476-att-putting-up-new-antennas-and-rrus/?p=386118

Link to comment
Share on other sites

That Droid Turbo (Cat 4) for instance has CA enabled B13+B4...

 

And the Nexus 6 supports both band 13 + band 2 and band 13 + band 4 carrier aggregation.  That was a curious inclusion, but the VZW announcement explains it. 

 

I will say, though, that the band 13 Release 8 infrastructure "rip and replace" Tim describes above will be selective.  So, Robert, do not count on VZW carrier aggregation in South Dakota any time soon.

 

;)

 

AJ

  • Like 1
Link to comment
Share on other sites

 

I will say, though, that the band 13 Release 8 infrastructure "rip and replace" Tim describes above will be selective.  So, Robert, do not count on VZW carrier aggregation in South Dakota any time soon.

 

;)

 

AJ

 

I suspect they will focus on markets where they do not have 15 or 20MHz B4 channel width capability first.  We have 15MHz B4 channels here.

Link to comment
Share on other sites

It's also very exciting that Haberman talked about 4x4 MIMO products in 2015. I know it's not a typo since he specifically talks about "launching 4x4 MIMO products".

In 4x2 network deployments, there is no need to launch a new user product, as the entire 2x2 device portfolio benefits by default.

 

"Another LTE Advanced technology Verizon will introduce is higher orders of MIMO. Currently, Verizon's network supports 2x2 MIMO, meaning two transmitters and two receivers, which is a standard for LTE. Haberman said Verizon will be launching products that support 4x4 MIMO, which he said will improve devices' uplink performance and enhance coverage."

 

http://www.fiercewireless.com/story/verizon-launch-carrier-aggregation-more-lte-advanced-features-2015/2014-12-04

Link to comment
Share on other sites

They could definitely do it on their TDD 8T8R sites.

 

I'm also guessing Verizon's 4x4 MIMO user solution is most likely going to be a fixed broadband (Home Fusion), or a tablet. Doubt that we'll see a 4x4 capable smartphone from Verizon in 2015. Let's hope that I'm wrong... 

Link to comment
Share on other sites

We believe Verizon is installing a ton of small cells throughout the Columbus Ohio metro. Amcferrin90 put a spectrum analyzer up to one and saw their frequency, but no Verizon users that I have asked have been able to get on them yet

  • Like 2
Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


  • large.unreadcontent.png.6ef00db54e758d06

  • gallery_1_23_9202.png

  • Posts

    • This has been approved.. https://www.cnet.com/tech/mobile/fcc-approves-t-mobiles-deal-to-purchase-mint-mobile/  
    • In the conference call they had two question on additional spectrum. One was the 800 spectrum. They are not certain what will happen, thus have not really put it into their plans either way (sale or no sale). They do have a reserve level. Nationwide 800Mhz is seen as great for new technologies which I presume is IOT or 5g slices.  T-Mobile did not bite on use of their c-band or DOD.  mmWave rapidly approaching deadlines not mentioned at all. FWA brushes on this as it deals with underutilized spectrum on a sector by sector basis.  They are willing to take more money to allow FWA to be mobile (think RV or camping). Unsure if this represents a higher priority, for example, FWA Mobile in RVs in Walmart parking lots working where mobile phones need all the capacity. In terms of FWA capacity, their offload strategy is fiber through joint ventures where T-Mobile does the marketing, sales, and customer support while the fiber company does the network planning and installation.  50%-50% financial split not being consolidated into their books. I think discussion of other spectrum would have diluted the fiber joint venture discussion. They do have a fund which one use is to purchase new spectrum. Sale of the 800Mhz would go into this. It should be noted that they continue to buy 2.5Ghz spectrum from schools etc to replace leases. They will have a conference this fall  to update their overall strategies. Other notes from the call are 75% of the phones on the network are 5g. About 85% of their sites have n41, n25, and n71, 90% 5g.  93% of traffic is on midband.  SA is also adding to their performance advantage, which they figure is still ahead of other carriers by two years. It took two weeks to put the auction 108 spectrum to use at their existing sites. Mention was also made that their site spacing was designed for midrange thus no gaps in n41 coverage, while competitors was designed for lowband thus toggles back and forth for n77 also with its shorter range.  
    • The manual network selection sounds like it isn't always scanning NR, hence Dish not showing up. Your easiest way to force Dish is going to be forcing the phone into NR-only mode (*#*#4636#*#* menu?), since rainbow sims don't support SA on T-Mobile.
    • "The company’s unique multi-layer approach to 5G, with dedicated standalone 5G deployed nationwide across 600MHz, 1.9GHz, and 2.5GHz delivers customers a consistently strong experience, with 85% of 5G traffic on sites with all three spectrum bands deployed." Meanwhile they are very close to a construction deadline June 1 for 850Mhz of mmWave in most of Ohio covering 27500-28350Mhz expiring 6/8/2028. No reported sightings.  Buildout notice issue sent by FCC in March 5, 2024 https://wireless2.fcc.gov/UlsApp/letterPdf/LetterPdfController?licId=4019733&letterVersionId=178&autoLetterId=13060705&letterCode=CR&radioServiceCode=UU&op=LetterPdf&licSide=Y&archive=null&letterTo=L  No specific permits seen in a quick check of Columbus. They also have an additional 200Mhz covering at 24350-25450 Mhz and 24950-25050Mhz with no buildout date expiring 12/11/2029.
    • T-Mobile Delivers Industry-Leading Customer, Service Revenue and Profitability Growth in Q1 2024, and Raises 2024 Guidance https://www.t-mobile.com/news/business/t-mobile-q1-2024-earnings — — — — — I find it funny that when they talk about their spectrum layers they're saying n71, n25, and n41. They're completely avoiding talking about mmWave.
  • Recently Browsing

    • No registered users viewing this page.
×
×
  • Create New...