公开(公告)号：US20180014253A1

公开(公告)日：2018-01-11

申请号：US15533301

申请日：2014-12-05

Applicant: Huawei Technologies Co., Ltd.

Inventor： Patrik Dai Javad ,  Jacob Lerenius ,  Hakan Lundqvist

IPC: H04W52/02 ,  H04W4/02 ,  H04W4/00

CPC classification number: H04W52/0277 ,  H04W4/023 ,  H04W4/80 ,  H04W8/005 ,  H04W52/0229 ,  H04W76/28 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/162 ,  Y02D70/164 ,  Y02D70/21

Abstract: An apparatus configured to broadcast a wireless signal when a processing circuitry of the apparatus is in a non-active state. The broadcasted signals can be used to localize the apparatus when the apparatus is lost. The apparatus has a first processing circuitry configured to operate in an active power consuming mode and a non-active low power consuming mode. The apparatus further has a wireless transmit circuitry configured to be in an active mode and broadcast a wireless signal when the first processing circuitry switches operation mode from the active mode to the non-active mode. The first processing circuitry is powered by a battery supply, and the first processing circuitry may be configured to automatically switch from the active mode to the non-active mode when the supply voltage provided by the battery supply decreases below a threshold voltage, whereby the wireless circuitry will be broadcasting.