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bucdenny

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Posts posted by bucdenny

    Calling Plus (VoLTE "Lite")

    in Network, Network Vision/LTE Deployment

    Posted

    On 11/14/2017 at 6:40 PM, radem said:

    VOIP uses 8kbps to 90kbps up while you are talking and that same speed down while the other person is talking.  The actual bandwidth is based on the algorithm used with higher numbers of bits required for HD voice and lower for regular voice and more bits are used for a larger range of sounds.  The algorithms for streaming audio which VOIP uses automatically adjust the amount of data used based on the range of sounds they are trying to send at that time.  VoLTE is normally in the 16kbps to 32kbps range.

    0.5mbps is the same as 500kb/s just to give you some idea of how much bandwidth you really have available.  At the highest possible quality and bit rate of 64kbps to 90kbps (which are almost never used on VoLTE connections) , near CD quality music could be broadcast over your VOIP call.  Those speeds are still less than 20% of your 0.5mbps speed or less than 5% if you are using closer to the minimum amount of standard voice bandwidth.

     

    end of the day on B41 my voice quality sux when near RSRP -110 and when on B25 I am able to have a normal call even at RSRP -115 quality. 

    Calling Plus (VoLTE "Lite")

    in Network, Network Vision/LTE Deployment

    Posted

    4 hours ago, WiWavelength said:

    Yes, but 0.5 Mbps uplink at -110 dBm RSRP on the downlink is at least an order of magnitude greater than what is needed to support Calling Plus.  Unless network congestion is a factor, uplink data speeds alone are not the bottleneck.  Rather, if those uplink data speeds are low because of retransmissions due to poor handset uplink RF output, then the uplink may have difficulty keeping up with near real time Calling Plus transmissions, even at 0.5 Mbps.

    AJ

    How would Sprint make it work for these poor RF uplink issues?

    Calling Plus (VoLTE "Lite")

    in Network, Network Vision/LTE Deployment

    Posted

    20 minutes ago, Galaxyguy said:

    From my personal experience, it seems my S8+ will start out on any band, but if it happens to go to B26, it likes to stay there for the remainder of the call, even when getting close to a tower. 

    I am in B25/B41 only market.  I am on B41 75% of the time.  The problem is once its on B41 for any voice calls it does not switch to B25 when I am on RSRP -110 or worse.  I do not drop calls, but calls goes to crap.  Clients on the other end cannot hear me.  I have to remember each time to turn off VoLTE on my S8+ if I am at my office (fragile B41) or when I am driving because my phone seems to hang on B41 even at RSRP -120 or worse.

    Calling Plus (VoLTE "Lite")

    in Network, Network Vision/LTE Deployment

    Posted

    6 minutes ago, WiWavelength said:

    Poor handset RF performance also could be in play.  A -110 dBm RSRP on band 41 downlink should be fine for Calling Plus.  But if the handset is weak on band 41 uplink, it could be running out of uplink power at that signal level.

    AJ

    Would config 2 make it worse on the uplink side? Or in this case it wouldn't matter as the RF performance on the uplink is terrible.  Im on a S8+ HPUE device. 

    Calling Plus (VoLTE "Lite")

    in Network, Network Vision/LTE Deployment

    Posted

    31 minutes ago, ingenium said:

    Sure it is. The eNB completely controls it. With proper VoLTE I imagine it will take being on a call into consideration for band selection.

    Sent from my Pixel 2 XL using Tapatalk
     

    I hope so.  I am on B41 75% of the time, with config 2 in place the upload stuffers and calls over LTE also suffers.  Calls over B25 works so much better at the moment in my area.

    Samsung Galaxy S8 & Dual Sim/Duos

    in Samsung

    Posted

    14 minutes ago, lilotimz said:

    You have to check under your account line services.  WiFI calling is not totally disabled even if you toggle it off on the device. 

    I made many calls today while driving on the freeway and no where near Wi-Fi.  It couldn't been Wi-Fi calling.  Also, I unplugged my UniFi at home, impossible to be on Wi-Fi.  My calls still going through and showing LTE connection.

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