LTE Advanced/Carrier Aggregation

Reply
Highlighted
I'm a Contributor Level 1
I'm a Contributor Level 1

LTE Advanced/Carrier Aggregation

Does Fido have carrier aggregation, and if so, in which configurations?  I have an M4 Aqua I bought from Fido, and I have never seen it on anything but AWS (1700/2100 aka Band 4).  I know it also supports LTE bands 7 (2600mhz) and also 12/17 (700mhz).  Does Fido support LTE-Advanced like it's parent company?  Also, I am in Ottawa, which on rogers coverage does not have LTE-Advanced.  Odd, since we were the launch market for Rogers LTE in 2011.  Supposedly, Rogers has aggressive LTE-Advanced rollout plans, but we are getting close to the end of the year, I was expecting to see it here by now.  

 

Also, if anyone knows of an app that allows me to switch LTE bands on a locked, unmodded M4 Aqua running 5.0 lollipop, that would also be greatly appreciated Smiley

 

 

Accepted Solution

Re: LTE Advanced/Carrier Aggregation


@kevinj1 wrote:

Rachel - the connection to Fido LTE is very stable.  The speed is acceptable, i have seen it as high at 90 mbps down.  All I could find from qualcomm about the 615 is that it was a category 4 LTE device, meaning it was LTE-Advanced capable, but only with 20 MHZ of combined frequency in certain configurations.  I think Fido band 4 is 20 mhz, and 2600 mhz is 10mhz so that is likely why it will not leave band 4. 


 

Hello,

 

  Just to clarify, a category 4 LTE device does not necessarily mean the device is LTE-A capable. The LTE categories only define maximum transmission speeds. For example, a category 4 device/network is capable of maximum download of 150 Mbits and upload of 50 Mbits. 

 

  While a category 4 device may indeed be LTE-A capable, those capabilities are dependent on hardware. For example, the following screen capture of 412 and 415 processors is taken from the comparison of Qualcomm Snapdragon processors.

Snapdragon 400.jpg
   If you note, both integrated modems are category 4 but only the modem in the Snapdragon 412 is capable of LTE-A.

 

  The processor in the M4 is the Snapdragon 615:

Snapdragon 615.jpg

 

    Unfortunately, the Snapdragon 615 does not appear to be capable of LTE-A.

 

 

  With regards to band selection, the phone would select the best band given the circumstances ie signal strength, channel bandwidth, etc.

 

  Bandwidths are scalable (1.4, 3, 5, 10, 15, 20 MHz), designed to help operators more easily migrate from narrowband technologies (e.g., GSM and CDMA2000) to LTE while also recognizing that wider bandwidth deployments of LTE would be required to achieve the target peak data rates (taken from here).

 

  Assuming the Fido bandwidths you mentioned are correct, then the phone would connect at 2x10MHz on band 4 and 2x5MHz on band 7. I suspect under different circumstances ie poor band 4 signal strength combined with good band 7 or 17 signal strength, the phone will use another band.

 

Hope this helps Smiley

 

Cheers

View solution in context
Flag this to a Moderator
Message 1 of 51
25,199 Views
Highlighted
I'm Helpful Level 1
I'm Helpful Level 1

Re: LTE Advanced/Carrier Aggregation


@Cawtauwrote:

Hello TwitchyPuppy,

 

  Welcome to the community!

 

  Something to keep in mind is that not all cellular towers use all of the bands/frequencies. LTE+ combines two (or more) bands/frequencies (see above post here). If your surrounding cellular towers do not use the specific bands necessary for aggregation, then your phone would not be able to connect to LTE+ at that location. You can get an idea of your area towers here.

 

  In addition, something else to keep in mind is that connecting to LTE+ does not necessarily mean you will get faster speeds. Not only would it depend on the bands/frequencies aggregated, but also on the size of the bandwidth connected (in addition to many other factors). For instance, this community member here, noted LTE+ speeds which were slower than your LTE speeds.

 

  As noted in that thread, there are many things which can affect data speed -- strength of signal, network congestion, LTE band(s) or frequency(-ies) to which your device is connected, bandwidth, etc.

 

Hope this helps Smiley

 

Cheers


Hi!

I appreciate your input 😃 However, it didn't help since it's not answering my inquiry as to if they have an ETA for LTE+ in Quebec.

Flag this to a Moderator
Message 41 of 51
2,487 Views
Highlighted
Former Moderator
Former Moderator

Re: LTE Advanced/Carrier Aggregation

Hey @TwitchyPuppy!

 

We're working on it, but, no news on that as of yet. 

 

We'll post an update as soon as we have one!



Flag this to a Moderator
Message 42 of 51
2,460 Views
Highlighted
I'm Helpful Level 1
I'm Helpful Level 1

Re: LTE Advanced/Carrier Aggregation


@FidoAmandawrote:

Hey @TwitchyPuppy!

 

We're working on it, but, no news on that as of yet. 

 

We'll post an update as soon as we have one!


Thanks!

Flag this to a Moderator
Message 43 of 51
2,459 Views
Highlighted
Former Moderator
Former Moderator

Re: LTE Advanced/Carrier Aggregation

Anytime! Wink



Flag this to a Moderator
Message 44 of 51
2,458 Views
Highlighted
I'm Helpful Level 1
I'm Helpful Level 1

Re: LTE Advanced/Carrier Aggregation


@FidoAmandawrote:

Hey @TwitchyPuppy!

 

We're working on it, but, no news on that as of yet. 

 

We'll post an update as soon as we have one!


After some tests, it appears you do have LTE-Advanced in Quebec City. I tried my SIM in a Galaxy S7 and it showed LTE+, with speeds of 100Mbps down.

However, I doubt you support the iPhone X yet as I get half those speeds.

Flag this to a Moderator
Message 45 of 51
2,396 Views
Highlighted
Moderator
Moderator

Re: LTE Advanced/Carrier Aggregation

Thanks for the update @TwitchyPuppy,

 

Indeed, from what we gathered it seems that the Iphones do not support LTE+ yet.

 

As for the Samsung Galaxy devices, the S7, S8 and S9 models are capable of LTE+ when available :).



Flag this to a Moderator
Message 46 of 51
2,508 Views
Highlighted
I'm Helpful Level 1
I'm Helpful Level 1

Re: LTE Advanced/Carrier Aggregation


@FidoSaadwrote:

Thanks for the update @TwitchyPuppy,

 

Indeed, from what we gathered it seems that the Iphones do not support LTE+ yet.

 

As for the Samsung Galaxy devices, the S7, S8 and S9 models are capable of LTE+ when available :).


You might want to check your source as iPhones have been LTE-Advanced capable since the 6 Wink

 

I just did a speed test on my X and averaged 100Mbps, which is as fast as I got on the S7. Which is LTE-Advanced speed. 

 

I noticed my X was connected to Rogers’ band 4, so that might explain it. 

Flag this to a Moderator
Message 47 of 51
2,487 Views
Highlighted
Senior MVP Senior MVP
Senior MVP

Re: LTE Advanced/Carrier Aggregation

Hello again,

 


@TwitchyPuppy wrote:...I just did a speed test on my X and averaged 100Mbps, which is as fast as I got on the S7. Which is LTE-Advanced speed. 

 

I noticed my X was connected to Rogers’ band 4, so that might explain it. 


  How did you find the information that your phone is connected to Band 4? Did you use the iPhone's Field Test? Connecting to Band 4 by itself would not be carrier aggregation. However, I do understand that your phone is achieving LTE-A speeds. It might be explained by the way Apple provides information.

 

  You can check the active LTE band and Carrier Aggregation status by following the instructions here. Unfortunately, I wasn't able to view the images provided in that post so the actual values below won't match. However, the settings should be the same. Under Serving Cell Info:

 

Serving cell info.jpg

 

taken from here.

 

  The freq_band_ind indicates that the iPhone is on Band 4. Note this page does not provide any information regarding carrier aggregation.

 

  Under CA Status:

 

CA Status.jpg

also taken from here.

 

  The CA Status provides the carrier aggregation information. In this example, there are two component carriers, 0 and 1 on bands 2 and 12, respectively. This iPhone was picking up 3 component-carrier carrier aggregation (3CC CA) with B4 main band and B2 & B12 as aggregation. Note that it appears iPhones do not indicate carrier aggregation with their status icons.

 

Hope this helps Smiley

 

Cheers

 

 


Flag this to a Moderator
Message 48 of 51
2,455 Views
Highlighted
I'm Helpful Level 1
I'm Helpful Level 1

Re: LTE Advanced/Carrier Aggregation


@Cawtauwrote:

Hello again,

 


@TwitchyPuppywrote:...I just did a speed test on my X and averaged 100Mbps, which is as fast as I got on the S7. Which is LTE-Advanced speed. 

 

I noticed my X was connected to Rogers’ band 4, so that might explain it. 


  How did you find the information that your phone is connected to Band 4? Did you use the iPhone's Field Test? Connecting to Band 4 by itself would not be carrier aggregation. However, I do understand that your phone is achieving LTE-A speeds. It might be explained by the way Apple provides information.

 

  You can check the active LTE band and Carrier Aggregation status by following the instructions here. Unfortunately, I wasn't able to view the images provided in that post so the actual values below won't match. However, the settings should be the same. Under Serving Cell Info:

 

Serving cell info.jpg

 

taken from here.

 

  The freq_band_ind indicates that the iPhone is on Band 4. Note this page does not provide any information regarding carrier aggregation.

 

  Under CA Status:

 

CA Status.jpg

also taken from here.

 

  The CA Status provides the carrier aggregation information. In this example, there are two component carriers, 0 and 1 on bands 2 and 12, respectively. This iPhone was picking up 3 component-carrier carrier aggregation (3CC CA) with B4 main band and B2 & B12 as aggregation. Note that it appears iPhones do not indicate carrier aggregation with their status icons.

 

Hope this helps Smiley

 

Cheers

 

 


That's valuable information, thanks a lot Smiley

I only have two Component Carriers, band 7 and 12. Does it mean it's not carrier-aggregation?

Flag this to a Moderator
Message 49 of 51
2,437 Views
Highlighted
Senior MVP Senior MVP
Senior MVP

Re: LTE Advanced/Carrier Aggregation

Hello again,

 


@TwitchyPuppy wrote:...


I only have two Component Carriers, band 7 and 12. Does it mean it's not carrier-aggregation?


 

  Do you mean you have a freq_band_ind main band and component carrier 0 aggregation band or that you have two component carriers, 0 and 1 in addition to the freq_band_ind?

 

  The former would be 2 component-carrier carrier aggregation (2CC CA) with B7 main band and B12 as aggregation. The latter scenario would be 3 component-carrier carrier aggregation (3CC CA) with B? main band and B7 & B12 as aggregation.

 

  Either way, you are getting carrier aggregation. Without carrier aggregation or LTE-Advanced (LTE+), the phones would only connect to a single band. There would be no component carriers. The CA Status would state not configured or disabled or something to that effect.

 

Hope this helps Smiley

 

Cheers


Flag this to a Moderator
Message 50 of 51
2,424 Views