I'm working with GSM modem and I'm wondering if anyone has come across any sort of measured or typical GSM current profiles for various actions such as:
- Connecting to base station
- Sending a SMS
- Voice call
- During an active data connection
I know the general trend of what the current consumption should look like when it is transmitting based upon frame rate and slot-time, what I'm looking for is more coarse view. For example when sending a SMS message it transmits for N number of slots.
Best Answer
I used some generic modules, so here are some values to work with:
This assumes having a matched antenna. The current consumption itself depends on the transmitted power and is thus dependend on the network. If you have a highly unmatched antenna, a voice call can draw up to 2500 mA.