A method includes receiving, by an electronic device, a positioning request; responding to the positioning request; determining a target time source having the highest priority in at least two time sources; providing, for a GPS chip, a target time currently corresponding to the target time source; and performing GPS positioning based on the target time.

This problem has been addressed before, but the way of doing so is flawed and incomplete. Only larger objects can be tracked, neglecting items such as glasses, TV remotes, and headphones. Some also solely use Bluetooth tracking, which can be quick and precise, but is unreliable. Items lost far away from people with Bluetooth active their phone cannot be found using this method. This is not an option for most small, easily misplaced items. Various embodiments of the device (in one case using the name SeekR) allow for tracking of all these difficult-to-keep-track-of items. The device's small size allows it to attach to all of these items that existing solutions cannot, e.g., on the frame of glasses, e.g., the bridge, temple and/or temple tips. The device also incorporates assisted global positioning system (AGPS), which is much more reliable than tracking devices that solely use Bluetooth technology, and, in many cases, using AGPS results in identifying the location of a lost item faster than using Bluetooth (or other short distance wireless communication systems). The AGPS system used in various embodiments combines trilateration and global positioning system (GPS) technology to determine a more accurate device location in less time than using GPS systems alone.

This problem has been addressed before, but the way of doing so is flawed and incomplete. Only larger objects can be tracked, neglecting items such as glasses, TV remotes, and headphones. Some also solely use Bluetooth tracking, which can be quick and precise, but is unreliable. Items lost far away from people with Bluetooth active their phone cannot be found using this method. This is not an option for most small, easily misplaced items. Various embodiments of the device (in one case using the name SeekR) allow for tracking of all these difficult-to-keep-track-of items. The device's small size allows it to attach to all of these items that existing solutions cannot, e.g., on the frame of glasses, e.g., the bridge, temple and/or temple tips. The device also incorporates assisted global positioning system (AGPS), which is much more reliable than tracking devices that solely use Bluetooth technology, and, in many cases, using AGPS results in identifying the location of a lost item faster than using Bluetooth (or other short distance wireless communication systems). The AGPS system used in various embodiments combines trilateration and global positioning system (GPS) technology to determine a more accurate device location in less time than using GPS systems alone.

A sensor device includes a processor configured to communicate with a user terminal as a communication apparatus that downloads positioning satellite information from a management server, acquires a current location by using the positioning satellite information, acquires action information indicating a result of an action of a user, and when the action information is acquired, instruct the user terminal to download the positioning satellite information from the management, and execute a process for acquiring a prediction ephemeris from the user terminal.

A communication device is attached to an animal in a facility, for example, using a band. The communication device transmits at least a position of the communication device (hereinafter referred to as position information) and identification information of the communication device (hereinafter referred to as a communication device ID) to a position information transmission device. The position information transmission device uses the position information and the identification information received from the communication device to select an animal whose position information is to be delivered. The position information transmission device transmits the position information about the selected animal to at least one of an in-zoo display device, a user terminal, and a staff member terminal.

A communication device is attached to an animal in a facility, for example, using a band. The communication device transmits at least a position of the communication device (hereinafter referred to as position information) and identification information of the communication device (hereinafter referred to as a communication device ID) to a position information transmission device. The position information transmission device uses the position information and the identification information received from the communication device to select an animal whose position information is to be delivered. The position information transmission device transmits the position information about the selected animal to at least one of an in-zoo display device, a user terminal, and a staff member terminal.

Disclosed is determining GNSS satellite position visibility by possessing an orbital segment representing the transit of a satellite in orbit over time, a coarse ray angle interval, a fine ray angle interval, and a digital surface model. Disclosed is propagating coarse ray at coarse ray angle intervals increments in a first pass between an observable point and orbital segment at a respective coarse ray angle to determine whether the coarse ray is obstructed by features of the DSM, and recording a status of the coarse ray based on whether the coarse ray was obstructed. If pairs of successive coarse rays have different status, designating the coarse ray with NLOS visibility, then performing a second pass by propagating, per each designated coarse ray, fine rays at fine ray angle intervals, and saving an indication of time at which LOS visibility to the satellite is obstructed.

A method performed by a server for assisting a radio network node to handle a set of positioning assistance data for positioning one or more User Equipments, UEs, in a wireless communications network is provided. Based on importance, the server determines a priority associated to the respective positioning assistance data out of the set of positioning assistance data. The server assists the radio network node by sending the set of positioning assistance data, and information about the determined priority associated to the respective positioning assistance data. The determined priority enables the radio network node to determine a schedule for broadcast of at least some of the respective positioning assistance data out of the set of positioning assistance data, in respect to available resources in the radio network node.

To provide a positioning apparatus which can reduce the error of the positioning information of the positioning satellite, by using either appropriate one of the positioning reinforcement information by the ground channel or the positioning reinforcement information by the satellite channel, according to execution state of the automatic driving. A positioning apparatus receives positioning information from positioning satellites; calculates a first own position based on the positioning information and the positioning reinforcement information of the ground base station; calculates a second own position based on the positioning information and the positioning reinforcement information of the satellite; determines either the first own position or the second own position to be used, based on whether or not the driving mode is the automatic driving mode; and outputs the first own position or the second own position determined to be used, as a final own position.

To provide a positioning apparatus which can reduce the error of the positioning information of the positioning satellite, by using either appropriate one of the positioning reinforcement information by the ground channel or the positioning reinforcement information by the satellite channel, according to execution state of the automatic driving. A positioning apparatus receives positioning information from positioning satellites; calculates a first own position based on the positioning information and the positioning reinforcement information of the ground base station; calculates a second own position based on the positioning information and the positioning reinforcement information of the satellite; determines either the first own position or the second own position to be used, based on whether or not the driving mode is the automatic driving mode; and outputs the first own position or the second own position determined to be used, as a final own position.