OmniSIM Power Saving
OmniSIM is meticulously engineered to support Internet of Things (IoT) devices that operate under tight power constraints. Here's how OmniSIM caters to low-power or power-constrained devices.
OmniSIM Chipset
Infineon SLM 17ECB800B
32-bit -ARM® SecurCore™ SC300™ at 33MHz
800 kB SOLID FLASH™
20kByte RAM
ISO7816, GPIO’s
Micro Symmetric Crypto Processor (μSCP)
Certification: CC EAL 5+ high (IFX_CCI_000037H)
Temperature range: -40°C to 105°C
Electrical Characteristics
External clock frequency: 1 to 10 MHz
Supply voltage range: 1.62 V to 5.5 V
Temperature range: -40°C to +105°C
Storage temperature range: +5° to +40°C (refer to the respective “Package Specification” document for more information)
ESD protection > 4 kV (HBM)
Max. sleep mode current (typical) < 100 μA in clock off mode
eDRX (Extended Discontinuous Reception)
The eDRX (enhanced Discontinuous Reception) feature is a power-saving innovation designed for IoT devices and smartphones. This mechanism allows a device and its network to agree on extended periods during which the device remains in a low-power state. Despite this, the device can still be reached for incoming data and network-initiated procedures with minimal delay.
Key Benefits
Reduced Power Consumption: By extending the intervals between active reception periods, eDRX significantly lowers the energy usage of devices, prolonging battery life.
Network Availability: Devices remain reachable and capable of receiving mobile terminating data and participating in network procedures, ensuring no compromise on connectivity.
Customizable Delay Intervals: The delay intervals for device availability can be negotiated and set according to specific application requirements, providing flexibility in balancing power saving with responsiveness.
Application
eDRX is particularly advantageous for IoT applications and devices that do not require constant network communication but need to remain available for periodic updates or commands, optimizing the balance between power efficiency and network availability.
PSM Power Saving Mode
Intended for devices that are expecting only infrequent mobile originating and terminating services and that can accept a corresponding latency in the mobile terminating communication.
eDRX and PSM are power saving features involving devices & access networks. This can be dependent on the local MNO support of these network services.
OmniSIM supports these 2 modes by supporting UICC Suspension.
UICC Suspension
The device can switch off the UICC without losing context. Before switching off, the SIM stores its internal status. When the device resumes the UICC, it does not need to initialize again all SIM context. This reduces the time and the process between the SIM and the modem.
SUSPEND command
Deactivate UICC (POWER_OFF)
Entering into eDRX idle mode or PSM Mode
re-activate the UICC (POWER_ON)
RESUME Command
verify that the same USIM is used, before it can leave the PSM Mode/ eDRX extended idle mode
Leave PSM Mode/eDRX extended idle mode
OmniSIM 1.3 supports UICC Suspension as byte 3 of EF_UMPC (0x02 = UICC supports the UICC suspension procedure)
EF_UMPC (UICC Maximum Power Consumption)
This file in the KORE profile provides the value of the UICC maximum power consumption during the UICC session. In addition, this file contains the value of the Operator defined time-out for the execution of any commands by the UICC if the terminal is not able to indicate it can supply the UICC maximum power consumption.
| Bytes | Description | Value |
|---|---|---|
1 | UICC maximum power consumption Maximum power consumption of the UICC during the UICC session in mA | 0x0A (10mA) |
2 | Operator defined time-out (T_OP) Terminal shall set for the execution of any commands by the UICC if the terminal is not able to indicate it can supply the UICC maximum power consumption. The value is expressed in seconds. | 0x14 (20sec) |
3 | Additional information
Indicates if the UICC requires an increased idle current during clock-stop-mode and if the UICC supports the UICC suspension procedure | 0x02 |
4 | RFU | 0x00 |
5 | RFU | 0x00 |
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