| 摘要 |
A method for reducing power consumption within a portable communication device, where the device includes a plurality of spatial sensing modules includes detecting a location of the portable communication device to a desired level of accuracy; determining that the location of the portable communication device is indoors; using one or more of the spatial sensing modules to sense a motion state or a spatially stationary state of the portable communication device by detecting changes in the surroundings of the portable communication. Detecting changes in the surroundings of the portable communication device includes using an inertial motion sensor to detect that the portable communication device is stationary; and using a control module of the device, for selectively switching ON or switching OFF one or more of the plurality of spatial sensing modules in a hierarchical manner, to reduce power consumption, in response to one or more of sensing the motion state, the spatially stationary state of the device or detecting change in surroundings of the portable communication device. |
