A system includes a plurality of lighting devices connected in a network to communicate in a service area, and a smart tag configured to communicate with one or more of the lighting devices. Each respective lighting device is configured to transmit a radio frequency signal including a device identifier of the respective lighting device. In response to expiration of a time period or an occurrence of an event, the smart tag is configured to transition from a low power consumption sleep mode to an awake mode. During the awake mode, the smart tag is configured to provide information that enables a processor or other computing device to determine a position of the smart tag or any asset associated with the smart tag in the service area. Upon transmission of the information, the smart tag is transitioned from the awake mode back to the low power consumption sleep mode.

A system and method for monitoring a spatial position of a mobile transmitter is provided. In particular, the mobile transmitter may be attached to or included in an object of interest. By analyzing the signal strengths of radio frequency signals emitted by the transmitter, a spatial position of the mobile transmitter can be determined, and it is possible to detect whether or not the spatial position of the mobile transmitter is outside an allowable area. By applying the monitoring of the spatial position to a radio frequency system on a vessel, a reliable man-over-board detection can be achieved.

Performing a combination localization technique includes determining a target localization parameter, selecting a combination localization technique in accordance with the target localization parameter, including a first localization technique associated with a first power error time profile, and a second localization technique associated with a second power error time profile. A device location is determined using the first localization technique for a first time period in accordance with the first power error time profile, and an updated device location is determined using the second localization technique in response to a triggering condition. A further updated device location is determined using the first localization technique following the first time period based on the updated device location. At least one of a combined energy value and a combined maximum error rate for the combination localization technique satisfies the target localization parameter.

Disclosed are systems, methods and devices for obtaining round trip time measurements for use in location based services. In particular implementations, a fine timing measurement request message wirelessly transmitted by a first transceiver device to a second transceiver device may permit additional processing features in computing or applying a signal round trip time measurement. The fine timing measurement may include one or more files specifying a requested number of fine timing measurement messages requested for transmission from the first wireless transceiver device in response to fine timing measurement request message. Such a signal round trip time measurement may be used in positioning operations.

Inter-alia, a method is disclosed comprising: obtaining one or more first fallback objects indicative of a geographic area that is covered by one or more cells of a communication network; obtaining one or more pieces of cell information indicative of a number of positioning requests that a respective cell of the one or more cells has received; determining one or more second fallback objects out of the one or more fallback objects; determining for an area of the respective second fallback object in that the needed level of accuracy for determining a position is not achievable, one or more cells based at least partially on the one or more pieces of cell information; and outputting the determined one or more second fallback objects and/or the determined one or more cells for usage in a generation of a radio map. It is further disclosed an according apparatus, computer program and system.

A technique is described for assigning a location-finder role to a mobile computing device (a location-finder device) within a spatially-clustered group of mobile computing devices. The location-finder device determines its location based on signals received from one or more external sources (such as a GPS system), to provide location data. The location-finder device then transmits a signal to other members of the group of mobile computing devices using a local communication channel (such as a BLUETOOTH communication channel). That signal conveys the location data. Each of the other members of the group uses the location data to define its position, in lieu of independently determining its own location from the external source(s). By virtue of this behavior, the other members can reduce their consumption of power.

In a position measurement apparatus, to maintain accuracy of a trajectory even when the frequency of acquisition of absolute position information is reduced, a movement information generation unit generates movement information including a movement distance and a movement direction of a device of interest based on a sensor value, and a reliability generation unit generates reliability information indicating a reliability value of the movement information. An amount of distance correction and an amount of angle correction to be made every predetermined number of steps are determined based on the reliability information and the movement information, and the distance and the angle are corrected every predetermined number of steps starting from the latest already-corrected position information.

The present invention relates to a method for obtaining a location using Neighbor Awareness Networking, NAN, and a corresponding system as well as a method carried out by a NAN device and a corresponding NAN device so that a location can be obtained in a simple way. In particular, the method for obtaining a location using neighbor awareness networking, NAN, comprises requesting the location of a target NAN device; determining a cluster of wireless NAN devices comprising the target NAN device as well as one or more anchor NAN devices having predetermined locations to serve as positioning nodes; performing range measurements using the travel times of radio signals between the target NAN device and each of the one or more anchor NAN devices; and obtaining the location of the target NAN device based on the range measurements.

Aspects of the disclosure are related to a method, apparatus and system for adjusting a processing bandwidth or frequency domain buffer decimation associated with reference signals, for example, positioning reference signals (PRS). By reducing the number of, for example, resource blocks and/or resource elements to be processed, the power involved in processing the reference signal can be reduced. Hence, in some implementations, aspects of the disclosure can enable low-power low-bandwidth devices, such as NarrowBand Internet of Things (IoT) (NBIoT), to decode reference signals such as PRS.

Systems, methods, devices, computer readable media, and other various embodiments are described for location management processes in wearable electronic devices. Performance of such devices is improved with reduced time to first fix of location operations in conjunction with low-power operations. In one embodiment, low-power circuitry manages high-speed circuitry and location circuitry to provide location assistance data from the high-speed circuitry to the low-power circuitry automatically on initiation of location fix operations as the high-speed circuitry and location circuitry are booted from low-power states. In some embodiments, the high-speed circuitry is returned to a low-power state prior to completion of a location fix and after capture of content associated with initiation of the location fix. In some embodiments, high-speed circuitry is booted after completion of a location fix to update location data associated with content.