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3.1.1. Sleep Mode
DRX of the module is able to reduce the current consumption to a minimum value during the sleep mode,
and DRX cycle index values are broadcasted by the wireless network. The figure below shows the
relationship between the DRX run time and the current consumption in sleep mode. The longer the DRX
cycle is, the lower the current consumption will be.
DRX OFF
Figure 3: DRX Run Time and Current Consumption in Sleep Mode
The following part of this section presents the power saving procedure and sleep mode of the module.
If the host supports USB suspend/resume and remote wakeup function, the following two conditions must
be met to make the module enter sleep mode.
⚫
AT+QSCLK=1 command is executed to enable the sleep mode.
⚫
Then, the host's USB bus, which is connected to the module's USB interface, enters suspend state.
The following figure shows the connection between the module and the host.
Figure 4: Sleep Mode Application with USB Remote Wakeup
RM510Q-GL_Hardware_Design
ON
OFF
ON
Module
USB Interface
GND
OFF
ON
OFF
ON
USB Interface
GND
5G Module Series
RM510Q-GL Hardware Design
OFF
Run Time
Host
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