A method of operating a communications device to maintain a position fix of the communications device includes obtaining a position fix using a position determination capability of the device, such as a global positioning system capability. The method further includes emitting a first acoustic signal, and recording a baseline acoustic signature in response to the emission of the first acoustic signal. The method further includes emitting an additional acoustic signal and recording an additional acoustic signature resulting from the emission of the additional acoustic signal, comparing the baseline acoustic signature with the additional acoustic signature, and estimating, based at least in part on the comparison of the baseline and additional acoustic signatures, whether the communications device has moved between the recordings of the baseline and additional acoustic signatures.

Biometric monitoring devices, including various technologies that may be implemented in such devices, are discussed herein. Additionally, techniques, systems, and apparatuses are discussed herein for providing power-conserving techniques and systems for efficiently utilizing a GPS receiver are described. The positional fix frequency of the GPS receiver may, according to some implementations, be modified or adjusted between various levels according to data from one or more non-GPS sensors. Such non-GPS sensors may include, for example, ambient light intensity or spectrum sensors, accelerometers, gyroscopes, magnetometers, heart rate sensors, galvanic skin response sensors, infrared sensors, etc.

The disclosure includes implementations for determining a position of a vehicle using millimeter wave narrow beamforming. A method may include receiving a set of training packets that each uniquely identify a position on a portion of a roadway where the vehicle is located. Each of the training packets included in the set may be associated with only one of the millimeter wave narrow beams. The method may include identifying a training packet included in the set of training packets that has a highest receive power level among the set of training packets. The method may include determining the position uniquely identified by the training packet having the highest receive power level. The method may include determining positional information for the vehicle based on the position uniquely identified by the training packet having the highest receive power level. The positional information may describe a location of the vehicle on the roadway.

An apparatus determines a plurality of candidate position groups each indicating an trajectory of estimated terminal positions on a candidate floor selected from among multiple floors, wherein the trajectory of estimated terminal positions on the candidate floor is estimated based on positions of base stations installed on the candidate floor and intensities of radio waves that have been transmitted by a terminal at time points and detected by the base stations. The apparatus identifies, from among the candidate floors selected from the multiple floors, a target floor on which the terminal actually exists, based on the trajectories of estimated terminal positions for the determined plurality of candidate position groups and a movement requirement that defines a condition of actual movement of the terminal on each of the candidate floors.

Systems, apparatuses, and methods are provided herein for updating directions to a container. In one embodiment an apparatus for updating directions to a container comprises a container housing, a movement sensor attached to the container housing, a wireless transceiver; and a control circuit coupled to the movement sensor and the wireless transceiver. The control circuit being configured to: detect a relocation of the container housing via the movement sensor, determine an estimated new location of the container, and send, via the wireless transceiver, the estimated new location to a computing device to initiate an update of a direction to the container.

An information processing device according to the present application includes an acquisition unit and a determination unit. The acquisition unit acquires time-series position information acquired by a terminal device. The determination unit determines whether relation between one or more pieces of interest position information included in the time-series position information acquired by the acquisition unit and prior or posterior position information in time series satisfies a predetermined criterion, and determines whether to hold the interest position information based on a determination result.

In one aspect, a device includes at least one processor, a global positioning system (GPS) transceiver accessible to the at least one processor, a motion sensor accessible to the at least one processor, a cellular communication transceiver accessible to the at least one processor, and storage accessible to the at least one processor. The storage bears instructions executable by the at least one processor to provide directions to follow a route to a destination and to vary a rate at which the GPS transceiver communicates with at least one satellite for providing the directions.

A method for tracking control of an unmanned aerial vehicle (UAV) includes obtaining flight data of the UAV, determining, within a preset period of time and according to the flight data, a number of switching times of the UAV switching between different flight directions, determining whether the UAV is vibrating according to the number of switching times, and determining whether to continue tracking a target according to whether the UAV is vibrating.

A positioning device includes a first storage device having stored therein received signal strength data in time series according to mobile device data, a second storage device having stored therein relative movement data of the mobile device in time series within a relative coordinate system, and a processor configured to calculate a first neighboring time at which the mobile device becomes closest to a first base station in the plurality of base stations based on the received signal strength data and a second neighboring time at which the mobile device becomes closest to a second base station of the plurality of base stations, and convert the relative movement data in the second storage device into position coordinates data specifying an absolute position of the mobile device in an absolute coordinate system using the first base station as a reference point from the first neighboring time to the second neighboring time.

A method in a location service client node includes maintaining a database containing a listing of beacon radio node identifiers with their geographic locations. A received location request contains an identifier for a UE and an identifier for a beacon radio node. A geographic location of the UE is determined from the database using the geographic location of the identifier for the beacon radio nodes. A message is sent to a public safety system containing the identifier for the UE and the geographic location. Subsequent to sending the message to the public safety system, a received movement notification message contains the identifier for the beacon radio node and data indicating that the beacon radio node has been moved. Data in the database is set to prevent the geographic location of the beacon radio node from being subsequently used to determine the geographic location of a UE.