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4G LTE Signal Strength Scale

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Article Number000006765
Problem Resolution
The LTE Signal Strength Scale:
Now you have determined your actual LTE signal strength in dBms your device is receiving, you can use the following scale below to determine its strength:
 
  • The 4G LTE Signal should be greater than -58 dBm (e.g. -32 dBm). A value of -96 dBm indicates no signal. If the signal is between -82 dBm and -96 dBm, move the device to an alternate location (an outdoor location is preferable). .
  • The LTE SINR should be greater than 12.5. The connection may drop to a 3G network with an SINR value of -6, resulting in slow speeds.
  • RSRP (Reference Signal Receive Power) is the average power of Resource Elements (RE) that carry cell specific Reference Signals (RS) over the entire bandwidth, so RSRP is only measured in the symbols carrying RS. While RSSI (Received Signal Strength Indicator) is a parameter which provides information about total received wide-band power (measure in all symbols) including all interference and thermal noise.
  • So it would be safe to say that, in LTE, RSRP provides information about signal strength and RSSI helps in determining interference and noise information. This is the reason, RSRQ (Reference Signal Receive Quality) measurement and calculation is based on both RSRP and RSSI.
 
    Better than -88dBm RSRP is a strong signal
    Between -89dBm and -96dBm is a very good signal
    Between -97dBm and -105dBm is good
    Between -106dBm and -112dBm is fair
    Worse than -113dBm RSRP is poor
 

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