公开(公告)号：US09986509B1

公开(公告)日：2018-05-29

申请号：US15493872

申请日：2017-04-21

Applicant: Cisco Technology, Inc.

Inventor： Shivaji P. Diwane ,  Sundara Paal Rani Thirumalaiappan ,  Yogapriya Gunasekaran ,  Vimal Aiyappath Narain

IPC: H04W24/00 ,  H04W52/02 ,  H04W4/12 ,  H04W60/06 ,  H04W60/00 ,  G06F1/30

CPC classification number: H04W52/0296 ,  G06F1/263 ,  G06F1/30 ,  H04W4/12 ,  H04W60/00 ,  H04W60/06

Abstract: In one embodiment, circuitry on a device is configured to detect a power failure of the device, inform a cellular modem of the device of the power failure, and supply capacitive reserve power to the cellular modem in response to the power failure. The cellular modem of the device may then send, using the capacitive reserve power, a cellular detach message into a cellular network, where the detach message has an indication that causes a receiving device to send a notification of the power failure to a configured endpoint device.