Abstract:
Disclosed are systems, methods and devices for application of determining position information for mobile devices. In specific implementations, measurement of a signal travel time and a signal's strength may be combined to characterize a transmission power of the signal's transmitter. The characterized transmission power may be applied to affect expected signal strength signature values for use of the signal's transmitter may be updated in order to enhance a location based service where location may be effected by accuracy of a transmitter's power.
Abstract:
Disclosed are systems, methods and devices for providing positioning assistance data to a mobile device based, at least in part, on a location context identifier (LCI). In one particular implementation, a user may select from a one or more of candidate LCIs identified, for example, based on acquiring one or more signals from transmitters in range of the mobile device.
Abstract:
Techniques are provided for utilizing one or more mobile devices to estimate distances between wireless access points (APs). Embodiments can, for example, enable mobile devices, wireless APs, and/or other systems to estimate a distance between two wireless APs using Round-Trip Time (RTT) measurements obtained by one or more mobile devices. The RTT measurements can be utilized based on whether one or more related Received Signal Strength Indication (RSSI) measurements exceed a threshold value. Embodiments can also utilize crowdsourcing to obtain distance estimation data (e.g., distance estimates, RTT and/or RSSI measurements, etc.) from one or more mobile devices and/or propagate a determined distance, based on the distance estimation data, to multiple devices.
Abstract:
Techniques are provided which may be implemented using various methods and/or apparatuses in a mobile device to request a transport vehicle. Techniques are provided which may be implemented using various methods and/or apparatuses in a transport vehicle to respond to a request from a mobile device. Various embodiments include customer and transport authentication and security techniques. Various embodiments include location update techniques to enable a transport vehicle to navigate to a mobile device, even in areas of low position accuracy for traditional GNSS and terrestrial transceiver-based systems.
Abstract:
Method, mobile device, computer program product, and apparatus for performing Fine Grain Position Data Collection is described. In one aspect a mobile device performs measurement batching of data, for example positioning and AP measurement data. In some aspects, the mobile device processes positioning and AP measurement data in response to a batch trigger. The mobile device may send the processed measurement batch to a server for analysis or processing. A batch trigger may include receiving a positioning fix with high confidence such that the mobile device may backfilter or otherwise correct mobile sensor based positioning data associated with AP measurements. The server may interpret the data from the measurement batches identified from a number of different mobile devices to calculate position of APs within an environment.
Abstract:
Measurements from a plurality of Access Points (APs) may be used to determine that at least one AP in the plurality is mobile. Measurements from APs determined to be mobile may be excluded when determining a User Equipment (UE) location. Disclosed embodiments also pertain to AP mobility characterization. AP mobility may be determined based on range rate measurements such as Round Trip Time measurements between the AP and UE; or a Doppler frequency shift relative to a nominal frequency used by the AP for transmissions. Based on range rate measurements, a probability of mobility may be assigned to APs. Information pertaining to APs that are determined to be stationary or associated with a low probability of mobility may be reported to a location server. Information pertaining to APs determined to be mobile or associated with a higher probability of mobility may not be reported to a location server.
Abstract:
Disclosed are devices, systems and methods for combining observations obtained at two different mobile devices attached to a human user for performing a navigation operation. For example, observations of a signal acquired at a first mobile device may be selected for computing a position fix based, at least in part, on a utility indicator associated with the observations.
Abstract:
Techniques are provided which may be implemented using various methods and/or apparatuses in a mobile device to request a transport vehicle. Techniques are provided which may be implemented using various methods and/or apparatuses in a transport vehicle to respond to a request from a mobile device. Various embodiments include customer and transport authentication and security techniques. Various embodiments include location update techniques to enable a transport vehicle to navigate to a mobile device, even in areas of low position accuracy for traditional GNSS and terrestrial transceiver-based systems.
Abstract:
Techniques for providing a notification to a user in a home network are provided. An example method according to the disclosure includes receiving an alert for the user, determining a location of the user, determining one or more proximate devices based on the location of the user, determining a location of one or more proximate non-interested users based on the proximate devices, determining an activity of the user, determining a preferred notification device based at least in part on the location of the user, the location of one or more proximate non-interested users, and the activity of the user, generating a notification message based at least in part on the preferred notification device, and sending the notification message to the preferred notification device.
Abstract:
Various techniques are provided that may be implemented at one or more of a plurality of co-located mobile devices. For example, a first mobile device may identify a plurality of location determination tasks, transmit a request indicative of a subset of the plurality of location determination tasks to be performed by a second mobile device, and receive a response to the request.