NB-IoT Module Series
BC26 AT Commands Manual
BC26_AT_Commands_Manual 13 / 73
2.6. AT+CESQ Extended Signal Quality
The execution command returns received signal quality parameters. If the current serving cell is not a
GERAN cell, <rssi> and <ber> are set to value 99. If the current serving cell is not a UTRA FDD or UTRA
TDD cell, <rscp> is set to 255. If the current serving cell is not a UTRA FDD cell, <ecno> is set to 255. If
the current serving cell is not an E-UTRA cell, <rsrq> and <rsrp> are set to 255.
Parameter
AT+CESQ Extended Signal Quality
Execution Command
AT+CESQ
Response
+CESQ: <rxlev>,<ber>,<rscp>,<ecno>,<rsrq>,<rsrp>
OK
If there is any error, response:
+CME ERROR:<err>
Test Command
AT+CESQ=?
Response
+CESQ:
(list of supported
<rxlev>
s), (list of supported
<ber>
s), (list of supported
<rscp>
s), (list of supported
<ecno>
s), (list of supported
<rsrq>
s), (list of supported
<rsrp>
s)
OK
<rxlev>
Integer type. Rx signal strength level
0
-110 dBm or less
1
-110 dBm
≤
<rssi>
< -109 dBm
2
-109 dBm
≤
<rssi>
< -108 dBm
….: ….
61
-50dBm
≤
<rssi>
< -49 dBm
62
-49dBm
≤
<rssi>
< -48 dBm
63
-48dBm
≤
<rssi>
99
not known or not detectable
<ber>
Integer type; channel bit error rate (in percent)
0…7 as RXQUAL values RXQUAL_0…RXQUAL_7 as defined in 45.008.
99
not known or not detectable
<rscp>
Integer type, received signal code power (see
3GPP 25.133
and
3GPP 25.123
)
0
-120 dBm or less
1
-120 dBm
≤
<rscp>
< -119 dBm
2
-119 dBm
≤
<rscp>
< -118 dBm
…: …
