Re:Battery life: Apple's solving for x
by kabouseng on Tuesday January 13, 2015 @05:52AM
(#8879020)
Thats an interesting observation, and is line with what I have seen.
We develop various GSM products, and I have noticed network packets delivered to our products at various times of the day, different for each GSM network. On one network it was every morning 08:00 a packet would be sent from the network to our device. (I could see it by seeing the modem would exit it's low power mode). I have not yet tried to do a capture of the packet, as it might be something destined for the modem baseband or sim card.
Anybody care to venture a guess? Perhaps a network ping or something?
Re:Battery life: Apple's solving for x
by PanMan on Tuesday January 13, 2015 @06:51AM
(#8879195)
GSM networks ping all devices on regular intervals (besides the handoffs between cells when traveling and when there is data to transmit). This interval is a setting of your network, from minutes to hours.
We develop various GSM products, and I have noticed network packets delivered to our products at various times of the day, different for each GSM network. On one network it was every morning 08:00 a packet would be sent from the network to our device. (I could see it by seeing the modem would exit it's low power mode). I have not yet tried to do a capture of the packet, as it might be something destined for the modem baseband or sim card.
Anybody care to venture a guess? Perhaps a network ping or something?