GS2101M IP2WiFi Adapter Command Reference Guide
1VV0301499
Rev. 2.0
142
2019-08-05
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Wake up for DTIM
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Wake up for a custom number of beacons
Wake up for Listen
Interval
To configure the STA to wake up for the listen interval, the command is
AT+WIEEEPSPOLL=2,10,1. This means that the STA will advertise in the Association
Request that the listen interval will be for every 10 beacons. Once associated, the STA will
wake up for every 10 beacons.
Wake up for DTIM
To configure the STA to wake up for every DTIM interval, the command is
AT+WIEEEPSPOLL=2,,0. Here we did not specify the listen interval as that will be the
default. In this case, the STA will advertise the default Listen Interval in the Association
Request. Once associated, the STA will wake up for every DTIM interval that has been
configured on the AP.
Custom Wake up
To configure the STA to wake up at a custom interval, the command is
AT+WIEEEPSPOLL=2,,2,5. Here also, we did not specify the listen interval, that will be
the default. The STA will advertise the default Listen Interval in the Association Request.
Once associated, the STA will wake up for every 5 beacons.
Difference between
Listen Interval based
Wake up Versus
Custom Wake up
At the outset, both of these options do the same thing - to wake the STA based on the
number of beacons given.
Either of these options can be used to wake the STA. However, the use case is as follows:
Example Use Case
Whenever the STA is needed to wake up at some configured interval, the Custom Wake up
option should be used. While configuring the custom wake up parameters, the listen
interval should not be entered; the default listen interval will be used in the association
request. Usually, in the association request, the STA will advertise the listen interval as a
large value (e.g., 10 beacons). The configuration of the custom wake up interval will be less
than the listen interval (e.g., 5 beacons). In this case, the STA bluffs to the AP while
associating telling that it will wake up for every 10 beacons. But, in reality, it will wake up
for every 5 beacons. This is just to ensure that the AP shouldn’t drop the buffered frames
in case the PS Poll request from the STA does not reach the AP.
Enable Power Save
To enable the power save on the STA, the command is AT+WIEEEPSPOLL=1. Whenever
AT+WIEEEPSPOLL is given as 1, the STA will take the last power save configuration into
effect. So, the user should first configure the behavior and then enable the power save.
Disable Power Save
To disable the power save on the STA, the command is AT+WIEEEPSPOLL=0. When this
command is executed, the radio is fully off. Order of Precedence between commands -
WRXACTIVE > WRXPS > WIEEEPSPOLL.
Command Note
If the power save behavior is changed after the association is done, the new changes will
take into effect only for the next association.
