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Thread: Why do I get better signal strength using EDGE than LTE?

  1. #16
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    Understood, but does -80 on one mean the same as -80 on the other?

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    Quote Originally Posted by californiajay View Post
    Understood, but does -80 on one mean the same as -80 on the other?
    But if the rssi is higher it's a dirtier signal which means there's lots of interference and noise which can mess with the cell signal as it gets weaker

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    Thought. GSM does not reuse RF channels on adjacent cells. LTE does. GSM can use more power without excessive cochannel interferance.

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    LET is very finicky to co- channel interference. Apparently, one of the next releases of LTE will abolish this problem, by using multiple EnB's at the same time. So instead of neighboring sites causing interference, they will all play with each other, greatly helping edge of cell performance.
    Edge does not have this issue. You could blast it as far as the time slots will allow. In some rural and open water areas, long range GSM was used to extend the time slots and range. It's no longer about range though. It's all about data performance and voice quality through data packets.

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    Two questions:
    1 - If my phone is set to LTE and I check Cellmapper and it says -85dbm, then switch the phone to edge and I get a reading of -75dbm, does that necessarily mean that the edge signal is stronger or do the 2 different technologies mean different things in these results. In other words, is -75 with an edge signal necessarily stronger than -85 with an LTE signal?
    2 - As far as RSRQ is concerned, the article states that its range should be between -3 and -19.5. When I compared an iphone recently with an android phone, while I saw LTE signal strength fairly similar (with the android doing between about 7 and 12 db better). The android phone hovered around -12 or so RSRQ but the iphone always stayed in the -25 or so range. What's up with that? To complicate matters, calls on the iphone even with lower signal strength and unacceptable RSRQ usually sounded better (clearer, less noise, louder etc). Why would that be?

    Are iphone measurements different than Android measurements? Just like my very first question, does -85db on an android necessarily mean it's got better signal than -95db on an iphone? Or are those measurements calculated differently on the 2? Seems the iphone will almost always have worse measurements but the call quality is almost always as good if not better.
    Last edited by californiajay; 05-13-2019 at 01:34 AM.

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    who cares ?
    wireless is wireless,
    we like LTE than EDGE

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    Well that was a helpful answer. Thanks so much!

    Also, thanks for bringing this thread to a screeching halt. I really wanted to learn something, but I guess that since you don't care, I will have to try and find answers elsewhere.
    Last edited by californiajay; 05-13-2019 at 01:40 PM.

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    Well, the better call quality on the iPhone is probably due, in part, to the better hardware Apple put in (or so I'd assume, given the price premium).

    As for Edge vs. LTE, I don't know.

    I hope this can jump start the thread, if only a little

    c

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    Quote Originally Posted by cc333 View Post
    Well, the better call quality on the iPhone is probably due, in part, to the better hardware Apple put in (or so I'd assume, given the price premium).

    As for Edge vs. LTE, I don't know.

    I hope this can jump start the thread, if only a little

    c
    LOL!
    Apple always puts the worst and cheapest hardware in iPhone and sells to the dumbs with premium price.
    you pay more for less for Apple

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    Well I did learn something by doing some research. Signal strength when comparing edge to LTE is not the same. An LTE signal with a strength of -85 is pretty good. An edge signal with that same reading is NOT. -85 on LTE is more like -65 on edge.
    Hopefully someone looking in here will find that useful.

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    Quote Originally Posted by californiajay View Post
    Well I did learn something by doing some research. Signal strength when comparing edge to LTE is not the same. An LTE signal with a strength of -85 is pretty good. An edge signal with that same reading is NOT. -85 on LTE is more like -65 on edge.
    Hopefully someone looking in here will find that useful.
    Its approximately 18 dbm's different. I figured that out when LTE was first deployed. Use to compare it to edge and umts all the time.

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    I get some interesting results locally. Name:  1558064513321.jpg
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    AT&T... your world, throttled.

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    Thanks for those replies.
    Now, anyone know about iphone vs Android db results? It seems that an iphone will almost always show worse signal strength than an Android phone and I sometimes wonder if signal strength really is inferior or if something similar is going on with the way Apple interprets db measurements compared to google.

    I have actually experienced iphone calls where signal strength was -115 or worse still holding on very well, and sounding very good. On the other hand, I have also seen Android calls where signal strength was -105 or so and calls started to break up. Is -115 on an iphone equivalent to -115 on an Android? Or are iphones maybe just better at call quality with marginal signal strength?

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    Quote Originally Posted by californiajay View Post
    Thanks for those replies.
    Now, anyone know about iphone vs Android db results? It seems that an iphone will almost always show worse signal strength than an Android phone and I sometimes wonder if signal strength really is inferior or if something similar is going on with the way Apple interprets db measurements compared to google.

    I have actually experienced iphone calls where signal strength was -115 or worse still holding on very well, and sounding very good. On the other hand, I have also seen Android calls where signal strength was -105 or so and calls started to break up. Is -115 on an iphone equivalent to -115 on an Android? Or are iphones maybe just better at call quality with marginal signal strength?
    Rsrq and snr also play a huge factor. It's three different factors that play into signal with LTE.

    Sent from my SM-N960U 6GB aka Note 9 using Tapatalk

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    Quote Originally Posted by californiajay View Post
    Thanks for those replies.
    Now, anyone know about iphone vs Android db results? It seems that an iphone will almost always show worse signal strength than an Android phone and I sometimes wonder if signal strength really is inferior or if something similar is going on with the way Apple interprets db measurements compared to google.

    I have actually experienced iphone calls where signal strength was -115 or worse still holding on very well, and sounding very good. On the other hand, I have also seen Android calls where signal strength was -105 or so and calls started to break up. Is -115 on an iphone equivalent to -115 on an Android? Or are iphones maybe just better at call quality with marginal signal strength?
    Might just be your phone. Most calls (and streaming audio) is typically good for me up to ~-120dBm.
    At -105dBm, I can still hit +50Mbps on band 4 (no CA).
    At -124dBm, its pretty useless, and at -140dBm, I lose service completely.
    Last edited by formercanuck; 05-17-2019 at 10:50 AM.

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