Patent ID: 9363772
Filing Date: 2016-06-07
CPC Classification: H04W,Y02D

Claim Text:
1. A method for reducing delays in setting up a new call to a power-saving enabled subscriber device by detecting a trigger event indicating future data communications are more likely to occur, the method comprising: the subscriber device operating in a low-power state in which at least one wireless link is disconnected from a wireless data network and in which the wireless link is periodically temporarily re-established to check for pending transmissions at a first reduced frequency before re-entering the disconnected state in response to finding no pending data transmissions; and responsive to the subscriber device detecting a trigger event indicating future data communications are more likely to occur, the trigger event being one selected from: (i) the subscriber device detecting that the subscriber device has entered or exited a particular incident site as defined in a geo-fence and associated with an incident occurrence, (ii) the subscriber device detected that it has been instructed to proceed to a particular geographic incident location defined at the subscriber device and associated with an incident occurrence, (iii) the subscriber device detecting a new association, or change in existing association, of the subscriber device with a particular role at a particular geographic region associated with an incident occurrence, and (iv) the subscriber device detecting a new association, or change in existing association, of the subscriber device with a particular talk group, the subscriber device transitioning the subscriber device to a higher-power state and the subscriber device transmitting data messages over the wireless link at a second increased frequency to cause the subscriber device to remain in a connected state more often compared to the low-power state.