The set command subscribes Coverage Enhancement (CE) notifications and reads current
parameters.
Syntax:
+CEINFO=<Reporting>
Notification
syntax:
+CEINFO: <Reporting>,<CE Enabled>,<UE State>,<Downlink Repetition Factor>,<Uplink Repetition Factor>,<RSRP>,<CINR>
<UE
State> is not between double quotation marks.
The set command parameters and their defined values are the following:
- <reporting>
- 0 – Disable unsolicited notifications
- 1 – Enable unsolicited notifications
- <CE Enabled>
- 0 – Serving cell does not support CE mode A/B
- 1 – Serving cell supports CE mode A/B
- <UE State>
- User Equipment (UE) state at the time of the report.1
- I – Idle
- R – RACH
- C – Connected
- <Downlink Repetition Factor>
- Downlink repetition factor.
- If <UE state> is Idle or RACH, it is set to
mpdcch-NumRepetition according to the current radio condition (i.e. RSRP) and
prach-ParametersListCE-r13 in SIB2 if the access technology is LTE-M. It is set to
npdcch-NumRepetitions according to the current radio condition and
NPRACH-Parameters-NB-r13 in SIB2-NB if the access technology is NB-IoT.
- If <UE state> is Connected, it is set to mpdcch-NumRepetition
for the radio bearer if the access technology is LTE-M. It is set to
npdcch-NumRepetitions for the radio bearer if the access technology is NB-IoT.
- <Uplink Repetition Factor>
- Uplink repetition factor.
- If <UE state> is Idle, it is set to
numRepetitionPerPreambleAttempt accordig to the current radio condition.
- If <UE state> is RACH, it is set to
numRepetitionPerPreambleAttempt selected by UE.
- If <UE state> is Connected, it is set to repetition number for
PUSCH if the access technology is LTE-M. It is set to repetition number for NPUSCH if
the access technology is NB-IoT.
- <RSRP>
- Current Reference Signal Received Power (RSRP) level at the time of report.1 Numerical range in dBm.
- 255 – Not known or not detectable.
- <CINR>
- Current CINR level at the time of report1. Numerical range in dBm.
- 127 – Not known or not detectable.
The following command example subscribes unsolicited CE
notifications:
AT+CEINFO=1
OK
The following is an example of an
unsolicited CE notification:
+CEINFO: 1,1,C,5,3,-50,10
1 The value
corresponds to the last value that has been stored before the time of report. For example,
when releasing an RRC connection, the transition from connection to idle state and the next
<UE State> being stored and reported can take several
seconds.