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Thread: CBRS B48 spotted on Verizon in downtown Lansing, Michigan.

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    CBRS B48 spotted on Verizon in downtown Lansing, Michigan.

    Found this near the state Capital.

    Name:  Screenshot_20200211-213923_Service mode RIL.jpg
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    Name:  Screenshot_20200211-213942_Speedtest.jpg
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    I wonder how the range of unlicensed CBRS compares to the range of licensed mmWave, given the low transmit power limit on the former.

    Between LAA, CBRS, and mmWave, Verizon is just ROLLING in short-range-only spectrum deployments!

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    Very exciting. Let’s hope we start seeing this pop up in many more places. Nothing on Cellmapper yet.

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    Do you need a special phone to pick this signal up?


    Sent from my iPhone using HoFo

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    I am going to try and head back over to Lansing this weekend and do some more searching. I will run Cellmapper and Signal Check. CBRS definitely has better range than LAA.

    Obeythelaw.....the Galaxy S10/Note 10 and iPhone 11 supports B48. I am pretty sure others do as well so if anyone knows please chime in.

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    Quote Originally Posted by VVivian View Post
    I wonder how the range of unlicensed CBRS compares to the range of licensed mmWave, given the low transmit power limit on the former.

    Between LAA, CBRS, and mmWave, Verizon is just ROLLING in short-range-only spectrum deployments!
    The licensed portion that will be auctioned off in June will NOT have power limits. The reason why the GAA portion is limited is due to the navy getting priority and the FCC wants to make sure there isn’t any interference.

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    I wonder whether licensed CBRS will have similar range to Sprint’s 2.5 GHz. (A bit shorter range, of course, but in the same ballpark nonetheless.)

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    Quote Originally Posted by VVivian View Post
    I wonder whether licensed CBRS will have similar range to Sprint’s 2.5 GHz. (A bit shorter range, of course, but in the same ballpark nonetheless.)
    There are other factor with Sprint’s Band 41 (2.5 GHz) that adds better distance performance from the cell phone to tower that is the weakest link. The FCC allows Band 41 to use HPUD which increases the power output of your cell phones on Band 41 to the towers. HPUD stands for High Power User Device. Not sure if the FCC will allow HPUD on CBRS especially with the Navy issue. https://www.fiercewireless.com/wirel...t-hpue-by-2018

    Not sure if CBRS is TDD or FDD. Band 41 is TDD.

    “ As [TDD] transmissions are not continuous, the required data rates can not be achieved as compare to FDD at similar distances from Base Station (or eNB). ➨As TDD supports lesser distances compare to FDD, it needs more base stations to achieve given coverage area.” https://www.rfwireless-world.com/Ter...D-and-FDD.html

    For comparison a old T-Mobile image showed one Band 12 (700 MHz) tower would require 10 to 12 Band 41 Towers to cover the same number of customers in that area. However that was before Sprint and cell phones started using HPUD.
    Last edited by shilohcane; 02-14-2020 at 12:12 AM.

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    Band 48 (CBRS) is TDD.

    As for the transmission limits:

    https://www.dwt.com/insights/2018/10...-35-ghz-cbrs-s
    Emissions Limits for CBSDs and End User Devices: The existing CBRS rules effectively necessitate a reduction in power when aggregating channels to accommodate wider bandwidths. As such, and in order to accommodate wider bandwidths for 5G technologies, the FCC will relax the emissions mask for uplinks from end-user devices. Notably, however, the agency declined to modify existing interference protections for services operating outside of the CBRS band.
    Looks like there's a good chance for licensed CBRS transmissions being allowed to use HPUE.

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    Quote Originally Posted by shilohcane View Post
    Not sure if CBRS is TDD or FDD. Band 41 is TDD.
    https://www.4g-lte.net/about/lte-fre...s/lte-band-48/

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    Quote Originally Posted by 10mm View Post
    Here are some speed tests from around Lansing. Did some mapping on Cellmapper as well.

    Attachment 165250
    Attachment 165251

    Attachment 165252
    Attachment 165253

    Attachment 165254
    Attachment 165255
    Did you ever see B48 as primary? Was B48 only on small cells, or macros too?


    Sent from my iPhone 11 Pro Max using Tapatalk
    Check out my Reno Area Wireless Information & Cellular Guide website for cell site location maps, pictures & more https://RenoWirelessInfo.com

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    I'd also like to know whether B48 uplink aggregation is enabled.

    Upload speeds are so underrated, and uplink carrier aggregation is criminally neglected.

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    Quote Originally Posted by RenoWirelessGuru View Post
    Did you ever see B48 as primary? Was B48 only on small cells, or macros too?


    Sent from my iPhone 11 Pro Max using Tapatalk
    I was able to park and do some testing right next to one of the 3 small cells I seen running it. I tried locking onto B48 only but it dropped to no service so it's not configured to run as PCC yet. It seemed to be on the small cells only but I'm sure it'll be on macros too. Good thing is at least one of the cells were those orangish-pink round cantennas that are most common everywhere. Propagation was actually pretty good. Much better than LAA.

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    Quote Originally Posted by VVivian View Post
    I'd also like to know whether B48 uplink aggregation is enabled.

    Upload speeds are so underrated, and uplink carrier aggregation is criminally neglected.
    Not yet. I'm not sure if they will do that configuration but we'll have to wait and see. They are running 2x B66 and 2x B5 LTE carriers and I didn't see any UL CA there. The S20 is certified to do B48 UL CA and I'm pretty sure the iPhone 11 is as well given the other combos we've seen.

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    Quote Originally Posted by RenoWirelessGuru View Post
    Did you ever see B48 as primary? Was B48 only on small cells, or macros too?


    Sent from my iPhone 11 Pro Max using Tapatalk
    https://www.steelintheair.com/Blog/2...as-radios.html

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