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What are the optimal signal figures for best speeds?

rik130

Regular Member
I've been experimenting with some new locations for my B525 and am wondering if there are any guidelines for what to aim for in the signal stats?

I have the following ranges in difficult locations:

RSSI -71 to -85
RSRP -97 to -107
RSRQ -4 to -6
SINR 10 to 18

Should I be aiming for bigger or smaller numbers? What are considered to be good numbers and bad numbers?
 
Higher is always better (so -71dbm is better than -72dbm, ( I believe 1 is actually 10 times better!).

With LTE the the SINR and RSRQ are the most important. Basically Signal Strength and Quality. Ideally you want 11+ for SINR and -8 or better for RSRQ.

So looking at your figures, you've got a pretty good connection there. It will fluctuate constantly because of the external characteristics of LTE signals, but should find its level.

The biggest caveat, you'll no doubt discover with LTE isn't the signal strength though. The biggest issue is the UK carriers not investing enough in capacity at mast level, the small number of local masts in your location or upgrading your local masts to support faster speeds.

I firmly believe this is because LTE was never designed to be used as a fixed home broadband solution. It was designed to be used as a mobile way to access the internet with bursty spells of access as you moved from one mast to another. Using it for home broadband brings about more issues because a handful of people hammering a mast can literally bring it to its knees for long periods of time.

Hence why UK carriers need to invest more in what they already have.
 
Thanks! That's actually a very useful and interesting post. Now that I know what I'm looking for in the numbers I can do some experimenting.

What relevance is the RSRP figure? As you didn't mention it, should I ignore it?
 
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  • SINR/SNR – The signal-to-noise ratio of the given signal.
    RSRP – The average power received from a single Reference signal, and Its typical range is around -44dbm (good) to -140dbm(bad).
    RSRQ – Indicates quality of the received signal, and its range is typically -19.5dB(bad) to -3dB (good).
    RSSI– Represents the entire received power including the wanted power from the serving cell as well as all co-channel power and other sources of noise and it is related to the above parameters through the following formula:
    • RSRQ=N*(RSRP/RSSI) - Where N is the number of Resource Blocks of the E-UTRA carrier RSSI measurement bandwidth.
 
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