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. Such a signal round trip time measurement may be used in positioning operations.

Positioning methods and devices are described, which relate to the field of positioning. A method comprises: acquiring a group of transmission parameters of a wireless energy transmission device; determining N groups of reference transmission parameters from multiple groups of reference transmission parameters according to the group of transmission parameters, where N is a positive integer; and determining, according to the N groups of reference transmission parameters, one receiving position of a wireless energy receiving device corresponding to the wireless energy transmission device. In this regard, a correspondence that exists between a receiving position of a wireless energy receiving device and a transmission parameter of a wireless energy transmission device can be used to implement positioning of the wireless energy receiving device.

Generally discussed herein are systems and apparatuses for managing a plurality of location providers and/or assigning a location provider to provide a location estimate. Also discussed herein are methods of using the systems and apparatuses. According to an example a method may include receiving a location estimate request from one or more location clients, determining, using a power cost heuristic, a power cost of using each of a plurality of location providers in performing a location estimate in accord with the location estimate request, assigning the location estimate request to a location provider of the plurality of location providers associated with a lowest determined power cost, and/or providing the location estimate to the location client.

Methods and systems for power optimization of a global navigation satellite system may comprise receiving LEO RF satellite signals utilizing a LEO satellite signal receiver path (LEO Rx) in a wireless communication device (WCD). Circuitry in the LEO Rx may be configured in a powered down state based on a sleep schedule. A location of the wireless communication device may be determined utilizing LEO signals received by the LEO Rx. The sleep schedule may be based on a desired accuracy of the determined location, the relative strengths of signals received from a plurality of LEO satellites, a relevance factor generated by a position engine and communicated to the sort module, or a desired power level of the WCD. The relative strengths of received signals may be compared utilizing a sort module in a LEO demodulator in the LEO satellite signal receiver path.

Acoustic information is obtained from an acoustic sensor of a mobile computing device. Location information of the mobile computing device can be obtained from location sensors of the mobile computing device. A context of the acoustic information can be determined and can have an assigned context attribute. A context-based acoustic map can be generated based on the context and the location information. Offers can be presented to a user of the mobile computing device. The offer can have an offer attribute matching the context attribute and a location attribute matching the location information.

A communication apparatus includes a first obtaining unit that obtains an access point's position information using wireless LAN communication, a second obtaining unit that obtains the communication apparatus' position using non-wireless LAN communication, a determination unit that determines whether a distance between the access point and the communication apparatus is less than or equal to a predetermined value, and a control unit configured to, in a case where the determination unit determines that the distance between the access point and the communication apparatus is less than or equal to the predetermined value, employ the access point's position information as the communication apparatus' position information and shift the second obtaining unit into a suspended state.

Technologies are described herein for providing contextually-aware location sharing services for computing devices. In some configurations, the techniques disclosed herein can involve a number of computing devices configured to select and utilize location data from one or more resources based on one or more factors. An analysis of contextual data including, but not limited to, the capabilities of the individual devices, a status of one or more components, or the availability or cost of data, allows individual devices to dynamically select and utilize location data or a source of location data to accommodate a range of scenarios. Techniques disclosed herein can also detect the presence of a changed scenario and take one or more actions based, at least in part, on data defining the changed scenario.

A method is described of using the mobile device so as to control the drain of power from the power source of the mobile device, the mobile device having at least two location determination techniques having respective power drain characteristics, the method includes selecting the location determination technique having a lower power drain characteristic the greater the determined distance of the mobile device from a predetermined location or area, and selecting the location determination technique having the greater power drain characteristic the smaller the determined distance of the mobile device from a predetermined location or area. The method thus uses the least accurate technique when furthest away and the most accurate technique when closer to a predetermined location or area.

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.

The embodiments of the present disclosure disclose a positioning method, a device, a server, a storage medium, and a terminal, involving with the field of communication. Firstly, the positioned terminal receives the positioning request sent by the positioning server; then the positioned terminal is triggered to open the positioning module based on the positioning request, and obtains the current position information through the positioning module; the positioned terminal sends the current position information to the positioning terminal; and finally, after the completion of the sending of the current position information, the positioned terminal turns off the positioning module. Since the positioned terminal obtains the current position information through positioning module and sends the information to the positioning terminal only when it receives the positioning request sent by the positioning server and it turns off the positioning module after sending the current position information, the electric quantity consumed by the positioned terminal can be reduced. The save of the electric quantity of the positioning terminal leads to the improvement of the endurance time of the positioned terminal.