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RAvirani

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Everything posted by RAvirani

  1. RAvirani
    Yes.
  2. RAvirani
    Sprint holds the C and G Blocks, I believe.
  3. RAvirani
    Let us know when you start seeing 15x15 L1900 down there. I don't think we've seen that in any Alcatel-Lucent markets yet.
  4. RAvirani
    Or 256QAM.
  5. RAvirani
    I have 36.1 on my iPhone 8.
  6. RAvirani
    Is there a reason for this? Are Essential Phones not VoLTE capable?
  7. RAvirani
    I've seen the first antenna (the Nokia/ALU antenna) on two sites in the Seattle market. I think those antennas are also being used in Samsung markets, although it appears they are quite rare. For anyone in the Seattle market who wants to check them out, the two sites are SE73XC022 and SE54XC010.
  8. RAvirani
    Try 15 MHz of uplink on L1900 in Seattle with 64QAM.
  9. RAvirani
    Try 15 MHz of uplink on L1900 in Seattle with 64QAM.
  10. RAvirani
    That's a shame...NR won't be as great with only 40 MHz of spectrum on air. This leaves almost half of Sprint's 2.5 GHz spectrum unused in most markets... It sounds like we will see a big drop in LTE capacity here in Seattle with the M-MIMO launch considering we have five L2500 carriers on air throughout much of the market.
  11. RAvirani
    Is it 100 MHz for all vendors' M-MIMO equipment? For some reason I was under the impression it was 120 MHz. In current hexadecaport setups, do you think Sprint will leave LTE running on the existing antenna/radio set to allow them to run wider NR channels at higher order MIMO? Also, is there any chance M-MIMO equipment ever be recertified for higher bandwidth operations? Or could Tx/Rx diversity be lowered to allow more spectrum?
  12. RAvirani
    I'm not sure. In Seattle, many sites have an active hexadecaport antenna along with an inactive 8T8R antenna (the 8T8R is not connected to a radio). They do this because swapping the 8T8R out for a massive MIMO antenna is apparently very easy from a permitting standpoint. I suspect that when they swap the 8T8R out for a massive MIMO antenna, they will leave LTE on the hexadecaport and dedicate the massive MIMO antenna to NR. This would allow them to have significantly more spectrum on air as well as 64x64 MIMO on NR (which is arguably more useful than 32x32 MIMO on LTE).
  13. RAvirani
    Doubtful. Massive MIMO equipment only simultaneously supports 60 MHz of LTE and 60 MHz of NR (it has a 120 MHz bandwidth limit). Since this is the deployment we're seeing going forward, it's unlikely that we'll see anything greater than 3CA on LTE. This will be interesting in markets like mine (Seattle) where most 8T8Rs currently run 5 carriers at 4x4 MIMO.
  14. RAvirani
    How is coverage/propagation with the new equipment?
  15. RAvirani
    That's a 600/700 antenna.
  16. RAvirani
    No. Massive MIMO panels are significantly smaller than those and do not have separate radios. That looks like Verizon equipment.
  17. RAvirani
    Permitting to swap from 8T8Rs to M-MIMO antennas is surprisingly easy. On many sites in my market, Sprint replaced the 1900-only antenna with a hexadecaport and left the 8T8R antenna unconnected to an RRU. This is so that they can easily one-to-one swap that antenna for a M-MIMO antenna when they're ready.
  18. RAvirani
    Oh, nice. Keep an eye on it in case deployment starts to spread more.
  19. RAvirani
    There are many cases where L2500 or L1900 signal is too weak to provide a reliable uplink, even though downlink still works well. In these cases, instead of placing users on L800, wouldn't it be convenient if L1900 or L2500 could be primarily used for downlink while L800 was used for uplink? This would save L800 capacity for real edge-of-cell scenarios where L800 is the only available LTE network. I don't think L800 should be aggregated with other carriers in areas with strong signal strength, though. This would be unnecessarily wasting the little capacity it can provide. A setup where L800 could be the PCC but not an SCC would be ideal.
  20. RAvirani
    What exactly did you spot? This is just L800...
  21. RAvirani
    How is signal propagation compared to before and other bands now?
  22. RAvirani
    Yes, I've seen Band 7 bear the Canadian border. EARFCNs are between 2750 and 3450.
  23. RAvirani
    E-UTRA stands for Evolved UMTS Terrestrial Radio Access. It is just the LTE air interface. An E-UTRA neighbor is just a neighbor LTE cell/sector that your phone is measuring (possibly for cell reselection).
  24. RAvirani
    It's likely Field Test just being buggy as usual.
  25. RAvirani
    Nice!
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