The validation of the PSM and eDRX tests on the Comprion test platform has activated two new GCF work items. The tests become part of GCF certification criteria.
The mobile network standardization body 3GPP introduced two new features – PSM (Power Saving Mode) and eDRX (extended Discontinuous Reception) – minimizing power consumption of IoT devices and extending their battery power up to ten years. In IoT applications such as container tracking, intelligent meters, or agriculture sensors, the devices do not need to send or receive data continuously. Oliver Wruck, Director MNTS at Comprion, explains: “Being an important member of the mobile ecosystem, we felt the need to test the UICC interface for devices that support PSM and eDRX in order to prevent unpleasant surprises when the devices go live in mobile networks.“
PSM and eDRX Features
In PSM, the device can switch to a sort of power-off mode for an agreed amount of time. If the device must transmit data, it can wake up without the need of reattaching to the network and the necessary signaling.
eDRX makes it possible to considerably extend the time interval during which the device is not listening to the network. For mobile-terminated traffic, this feature improves power conservation vastly.
Standardization of Tests