Set command

The set command returns received signal quality parameters.

Syntax:

+CESQ

Response syntax:

+CESQ: <rxlev>,<ber>,<rscp>,<ecno>,<rsrq>,<rsrp>

The set command parameters and their defined values are the following:

<rxlev>
99 – Not known or not detectable
<ber>
99 – Not known or not detectable
<rscp>
255 – Not known or not detectable
<ecno>
255 – Not known or not detectable
<rsrq>
0 rsrq < −19.5 dB
1 – When −19.5 dB ≤ RSRQ < −19 dB
2 – When −19 dB ≤ RSRQ < −18.5 dB
...
32 – When −4 dB ≤ RSRQ < −3.5 dB
33 – When −3.5 dB ≤ RSRQ < −3 dB
34 – When −3 dB ≤ RSRQ
255 – Not known or not detectable
The index value of RSRQ can be converted to decibel with the following formula: Index x ½ – 19,5 = dB. For example, (32 x ½) – 19,5 = –3,5 dB.
<rsrp>
0 – RSRP < −140 dBm
1 – When −140 dBm ≤ RSRP < −139 dBm
2 – When −139 dBm ≤ RSRP < −138 dBm
...
95 – When −46 dBm ≤ RSRP < −45 dBm
96 – When −45 dBm ≤ RSRP < −44 dBm
97 – When −44 dBm ≤ RSRP
255 – Not known or not detectable
The index value of RSRP can be converted to decibel with the following formula: Index – 140 = dB. For example, 95 – 140 = –45 dB.

The following command example reads the current signal quality, mapped Reference Signal Received Quality (RSRQ) 31, and Reference Signal Received Power (RSRP) 62:

AT+CESQ
+CESQ: 99,99,255,255,31,62
OK