RSRP / RSRQ / CINR thresholds:
Cell Edge RSRP < -120 dBm RSRQ < -18 dB CINR < -6 dB
Mid cell -100 dBm < RSRP < -120 dBm -18 dB < RSRQ < -14 dB -6 dB < CINR < 0 dB
Good cell -80 dBm < RSRP < -100 dBm -14 dB < RSRQ < -10 dB 0 dB < CINR < 10 dB
Excellent -80 dBm < RSRP -10 dB < RSRQ < -3 dB 10 dB < CINR