LTE Module Series
EC25&EC21 AT Commands Manual
EC25&EC21_AT_Commands_Manual 78 / 231
6.3. AT+CSQ Signal Quality Report
The command indicates the received signal strength
<rssi>
and the channel bit error rate
<ber>
.
Parameter
AT+CSQ Signal Quality Report
Test Command
AT+CSQ=?
Response
The Test Command returns values supported by the TA.
+CSQ:
(list of supported
<rssi>
s)
,
(list of supported
<ber>
s)
OK
Execution Command
AT+CSQ
Response
The Execution Command returns received signal strength
indication
<rssi>
and channel bit error rate
<ber>
from the
ME.
+CSQ: <rssi>,<ber>
OK
+CME ERROR: <err
>
Maximum Response Time
300ms
Reference
3GPP TS 27.007
<rssi>
0
-113dBm or less
1
-111dBm
2...30
-109dBm... -53dBm
31
-51dBm or greater
99 Not known or not detectable
100 -116dBm or less
101 -115dBm
102...190 -114dBm...-26dBm
191 -25dBm or greater
199 Not known or not detectable
100~199
Extended to be used in TD-SCDMA indicating received signal code
power (RSCP)
<ber>
Channel bit error rate (in percent)
0...7
As RXQUAL values in the table in
3GPP TS 45.008
subclause 8.2.4
99
Not known or not detectable
