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4G LTE RSSI vs RSRP

Here are a few takeaways about RSSI and RSRP as signal strength measurement techniques for LTE:
 
  •     RSSI varies with LTE downlink bandwidth.  For example, even if all other factors were equal, VZW 10 MHz LTE bandwidth RSSI would measure 3 dB greater than would Sprint 5 MHz LTE bandwidth RSSI.  But that does not actually translate to stronger signal to the end user.
  •     RSSI varies with LTE subcarrier activity -- the greater the data transfer activity, the higher the RSSI.  But, again, that does not actually translate to stronger signal to the end user.
  •     RSRP does a better job of measuring signal power from a specific sector while potentially excluding noise and interference from other sectors.
  •     RSRP levels for usable signal typically range from about -75 dBm close in to an LTE cell site to -120 dBm at the edge of LTE coverage.

Last updated: Feb 20, 2019

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Cellular/Transport

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