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RAvirani

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Everything posted by RAvirani

  1. RAvirani
    You need fairly clean signal to take advantage of 256QAM. I find it more useful on L1900 than L2500. If you're seeing absolutely no bump in speed, even in strong/clean signal areas, I would guess backhaul is the bottleneck.
  2. RAvirani
    256QAM is live pretty much nationwide at this point. Massive MIMO is rolling pretty quickly out too...
  3. RAvirani
    That is correct.
  4. RAvirani
    If Sprint and T-Mobile were to merge, C Spire would see a dramatic drop in their network usage by Sprint customers as T-Mobile covers most of the areas C Spire does. This would lead to reduced revenue from roaming fees for C Spire. Accordingly, C Spire being against the merger seems pretty logical.
  5. RAvirani
    Actually, poking around the coverage map, I noticed that all of Sprint’s former C Sprire roaming coverage in Mississippi is native now. Is this new?
  6. RAvirani
    That site looks a little like it's ready to fall over.
  7. RAvirani
    I've seen a few Clear to Triband conversions in the Seattle. I reported a few a couple of weeks ago.
  8. RAvirani
    Hi everyone, The coverage map was updated again today. It appears Sprint is displaying increased LTE coverage due to the new (more weak LTE friendly) handoff parameters for VoLTE. I didn't notice any big roaming or native coverage changes otherwise.
  9. RAvirani
    Sounds like massive MIMO or an outdoor DAS would be a good idea.
  10. RAvirani
    Yes there's definitely some sort of network-side configuration issue. Hopefully whoever you're working with will be able to resolve it. Otherwise, I would recommend emailing marci@sprint.com with as many technical details as you can, and she'll connect you with an engineer in your area.
  11. RAvirani
    I was under the impression they had. If not, I'm not entirely sure. That's strange. Maybe you should reach out to a local RF engineer in that case. In Seattle I often see my phone jump from -112 L800 to -120 L1900. It makes the edge of cell experience tons better because we have 15x15 L1900.
  12. RAvirani
    We have 3x3 L800 in Seattle too, but density is so good I almost always am on L2500. And when I do drop to L800, it's good enough for everything I do on my phone (including video). I would guess your market either doesn't have handoff parameters set to aggressively move users up to L1900/L2500 or lacks site sufficient site density to survive with 3x3 L800.
  13. RAvirani
    Sprint devices are only certified and tested for CDMA Band Class 1 which only included the PCS A-F blocks. This is because Sprint has CDMA live long before the PCS G Block even existed. Running CDMA band Class 14 would have allowed devices to use CDMA in the PCS G Block but every device on the network was BC1 only when Sprint acquired the PCS G block; long story short, a smooth transition wouldn't have been possible. Sprint has been swapping spectrum with other carriers over the past few years to obtain the PCS C block (which is contiguous with the PCS G block). This allows Sprint to run wider single L1900 carriers
  14. RAvirani
    Sprint's spectrum holdings aren't contiguous. They own a 15x15 chunk in the PCS A block and the PCS G block. Since the G block cannot be used for CDMA they have 5x5 LTE live there, 10x10 LTE live in the A block and 5x5 worth of CDMA online in the A block.
  15. RAvirani
    Magic boxes help when LTE is weak. They don't impact CDMA service. This could be helpful if you transition to VoLTE for calls in the future.
  16. RAvirani
    Have you applied for a Magic Box?
  17. RAvirani
    Deprioritizarion would be the first thing that comes to mind. USCC doesn't place band restrictions on Sprint roaming, although T-Mobile does. I'm not 100% sure about carrier aggregation.
  18. RAvirani
    What kind of antennas are those?
  19. RAvirani
    Possibly. T-Mobile roaming is active in the greater Chicago area.
  20. RAvirani
    LTE > Serving Cell Info.
  21. RAvirani
    If you have an Intel iPhone, you'll be able to tell by the MCC/MNC. If not, you can usually tell whether you're on T-Mobile by looking at band (as T-Mobile's bands are completely different from Sprint bands).
  22. RAvirani
    Yes, it should be. That being said, T-Mobile roaming is enabled on a per site, per band basis. For example, there are sites where Sprint users can only access L2100, sites where Sprint users can only access L700, sites where Sprint users can access a combination of bands, as well as sites where roaming is not allowed altogether. Your phone should prefer T-Mobile LTE over Sprint EVDO if both are available.
  23. RAvirani
    That is correct.
  24. RAvirani
    Interesting...
  25. RAvirani
    Sprint traffic is prioritized behind T-Mobile traffic. That could be the cause of some of what you're seeing.
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