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GSM sleep

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AAnkur

New Member
What is the difference in the following two modes?
1> GSM in sleep mode
2>GSM is on but not doing anything
Ofcourse, there is a differnce of power consumption but do they differ functionally also?
Please comment
Thanks
 

Dr_Doggy

Well-Known Member
1> my car is shut off
2> my car is running , but not going anywhere "idling", it is in a ready state
 

Diver300

Well-Known Member
Most Helpful Member
What is the difference in the following two modes?
1> GSM in sleep mode
2>GSM is on but not doing anything
Ofcourse, there is a differnce of power consumption but do they differ functionally also?
Please comment
Thanks

Welcome to ETO

GSM phones have a whole load of different mode, which use different amounts of power.

You can get the data sheet for a GSM module from here:-
https://www.telit.com/products/prod...uct-service-selector/show/product/ge865-quad/

and on page 26 there is this information:-
SWITCHED OFF Module supplied but Switched Off <62uA

IDLE mode:-

AT+CFUN=1 16.0 mA Normal mode: full functionality of the module

AT+CFUN=4 16.0 mA Disabled TX and RX; module is not registered on the network

AT+CFUN=0 or =5
3.9 mA Paging Multiframe 2
2.5 mA Paging Multiframe 3
2.4 mA Paging Multiframe 4
1.5 mA Paging Multiframe 9

CSD TX and RX mode GSM Voice call
GSM900 CSD PL5 240 mA
DCS1800 CSD PL0 175 mA

GPRS (class 1) 1TX + 1RX GPRS Sending data mode
GSM900 PL5 225 mA
DCS1800 PL0 160 mA

GPRS (class 10) 2TX + 3RX GPRS
Sending data mode
GSM900 PL5 420 mA
DCS1800 PL0 290 mA​

In the "off" mode the phone does nothing. The standby modes are when the module isn't communicating. The different Paging Multiframe modes are where the phone is registered on a network, and the network says that the phone can turn off for a few seconds without de-registering. The phone turns on for a brief time to check for calls to the phone, and then turns off again.

During a call the phone transmits 1/8th of the time. In GPRS class 1 mode, it transmits for the same amount of time. In GPRS class 10, the phone transmits for 2 slots not one, so transmits 1/4 of the time, and takes more power.

It gets a bit more complicated when you get onto 3G or 4G phones.
 
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