LEXI-R422 - System integration manual
UBX-23007449 - R02
System description
Page 20 of 108
C1-Public
1.5.1.5
VCC current consumption in low power idle mode
The low power idle mode configuration is by default disabled, but it can be enabled using the +UPSV
AT command (see the AT commands manual
).
When low power idle mode is enabled, the module automatically enters the low power mode whenever
possible, but it must periodically monitor the paging channel of the current base station (paging block
reception), in accordance to the 2G / LTE system requirements, even if connected mode is not enabled
by the application. When the module monitors the paging channel, it wakes up to the active mode to
enable the reception of the paging block. In between, the module switches to low power mode. This is
known as discontinuous reception (DRX) or extended discontinuous reception (eDRX).
illustrates an example of the module current consumption profile when low power mode
configuration is enabled. The module is registered to the network. It automatically enters the low
power idle mode, and periodically wakes up to active mode to monitor the paging channel for the
paging block reception in discontinuous reception (DRX) mode.
See detailed current consumption values in the LEXI-R422 data sheet
IDLE MODE
ACTIVE MODE
IDLE MODE
Active Mode
Enabled
Idle Mode
Enabled
Time [s]
Current [mA]
Time [ms]
Current [mA]
RX
Enabled
0
100
0
100
Paging period
Figure 9: Example of VCC current consumption profile with low power mode enabled (AT+
UPSV≠0
)
