Abstract: Techniques for enhanced Global Navigation Satellite Systems (GNSS) position determination can include capturing an image, from a camera, of obstructions near a mobile device. Orientation information regarding the camera can is used to determine where, in the image, the horizon is situated, and which portions of the sky are blocked by the obstructions from the perspective of the mobile device. Information regarding the location of satellites in the sky is obtained, based on an estimated position of the mobile device. Obstructed satellites can then be identified by comparing the location of the satellites with the obstructed portions of the sky. In a GNSS position determination, information received from the obstructed satellites can then be disregarded or de-weighted accordingly. In some embodiments, the information regarding the blocked portions of the sky can be sent to a server and/or shared with other nearby mobile devices.

Abstract: Methods, systems, and devices for wireless communications are described. A vehicle-based wireless device may receive a calibration availability message from a roadside unit identifying one or more calibration characteristics of a calibration object associated with the roadside unit. The vehicle-based wireless device may determine one or more sensor characteristics for a sensor of the vehicle and the vehicle. The vehicle-based wireless device may measure the one or more calibration characteristics of the calibration object using the sensor while the vehicle is within a defined range of the calibration object. The vehicle-based wireless device may perform a calibration procedure to calibrate the sensor based at least in part on the identified one or more calibration characteristics, the measured one or more calibration characteristics, and the one or more sensor characteristics.

Abstract: Techniques for determining an alternative communication mode for vehicle-to-vehicle communication at a host vehicle can include monitoring the primary mode of RF communication to ensure it is effectively communicating and, if not, intelligently selecting a backup communication mode comprising one or more other sensors and/or systems of the vehicle. The selection of the backup communication mode may take into account various factors that can affect the various modes of communication from which the backup communication mode is selected.

Abstract: Various aspects of the present disclosure generally relate to vehicle sensors. In some aspects, a device associated with a vehicle may obtain, from an external source, calibration data including a first set of measurements related to a position of one or more objects in a reference frame associated with the external source. The device may identify a second set of measurements related to the position of the one or more objects within a field of view of one or more onboard sensors, and update a calibration table based at least in part on a comparison of one or more of the first set of measurements and one or more of the second set of measurements that are most time-aligned. Accordingly, the device may convert sensor-derived location information from a source reference frame to a reference frame associated with the vehicle using the updated calibration table. Numerous other aspects are provided.

Abstract: Disclosed are a method and devices for determining a location context of a first device. The method includes receiving, at the first device, a wireless signal from a second device, determining a proximity of the first device to the second device based on the wireless signal, and determining an area inference based on characteristics of the second device and based on the determined proximity of the first device to the second device. The area inference includes a category of the area. The method also includes assigning an area label to the first device based on the area inference, and providing the area label to an application to enhance the performance of the application.

Abstract: Techniques are provided which may be implemented using various methods and/or apparatuses to provide augmented reality assistance. An example method includes obtaining a location of the mobile device, and obtaining local rules based on the location of the mobile device. The method also includes obtaining one or more images of an environment in proximity to the mobile device, identifying one or more areas of the environment in the one or more images based on the local rules, and displaying augmented reality (AR) assistance at the mobile device, wherein the AR assistance is based on the identified one or more areas of the environment.

Abstract: Certain aspects of the present disclosure generally relate to providing health assistance information. In some aspects, a device determines one or more rates of change for one or more physiological parameters of a user, and may determine whether the one or more rates of change meets one or more thresholds. The device, in response to the determination that the one or more rates of change meets one or more thresholds, may identify one or more potential user conditions based on the one or more rates of change, a location of the device and user profile. The device may provide one or more messages based on the one or more potential user conditions.

Abstract: A mobile device includes processor(s) coupled to memory, an input device, an output device, and a wireless transceiver. The mobile device can determine whether a destination is in a no wireless network coverage area. If so, then the route data used to provide navigation instructions to the destination is retained in the memory of the mobile device. In subsequent navigation, the mobile device can use the route data for navigation to a subsequent destination.

Abstract: Various aspects of the present disclosure generally relate to optical character detection. In some aspects, a user device may receive, from a vision sensor, a first image that is associated with a first optical character image. The user device may determine, using an image processing model, that the first image depicts the first optical character image. The user device may cause, based at least in part on determining that the first image depicts the first optical character image, a camera to capture a second image that is associated with a second optical character image. The user device may perform an action associated with the second image. Numerous other aspects are provided.

Abstract: Disclosed is a method and apparatus for capturing, collecting, and distributing event information displayed on signs. The method may include capturing, by a mobile device, an image of a sign that displays information for an event. The method may also include extracting information for the event from the captured image of the sign, and determining a location of the mobile device when the image of the sign was captured. Furthermore, the method may include uploading, to a server, a time when the image was captured, the information for the event extracted from the captured image, a location of the event determined from extracted event information, a location of the sign, or a combination thereof.

Abstract: Disclosed is a method and apparatus for capturing, collecting, and distributing event information displayed on signs. The method may include capturing, by a mobile device, an image of a sign that displays information for an event. The method may also include extracting information for the event from the captured image of the sign, and determining a location of the mobile device when the image of the sign was captured. Furthermore, the method may include uploading, to a server, a time when the image was captured, the information for the event extracted from the captured image, a location of the event determined from extracted event information, a location of the sign, or a combination thereof.

Abstract: A mobile device comprises one or more processors, a display, and a camera configured to capture an image of a live scene. The one or more processors are configured to determine a location of the mobile device and display an augmented image based on the captured image. The augmented image includes at least a portion of the image of the live scene and a map including an indication of the determined location of the mobile device. The one or more processors are also configured to display the at least a portion of the image of the live scene in a first portion of the display and displaying the map in a second portion of the display. The augmented image is updated as the mobile device is moved, and the map is docked to the second portion of the display as the augmented image is updated.

Abstract: A method and system for assisting mobile stations to locate a satellite use an efficient messaging format. A server computes a correction between coarse orbit data of a satellite and precise orbit data of the satellite. A coordinate system is chosen such that variation of the correction is substantially smooth over time. The server further approximates the correction with mathematical functions to reduce the number of bits necessary for transmission to a mobile station. The mobile station, upon receiving the coefficients, evaluates the mathematical functions using the coefficients and a time of applicability (e.g., the current time), converts the evaluated result to a standard coordinate system, and applies the conversion result to the coarse orbit data to obtain the precise orbit data.

Abstract: A mobile device comprising one or more processors coupled to a camera configured to capture an image of a live scene, a display, and a memory can comprise the one or more processors configured to present an augmented image on the display. The augmented image can be based on the captured image and can include an image of an auxiliary object, such as a map, a browser, an additional camera view (local or remote), and/or an interface of a mobile application, docked to a feature comprising a physical object visible in the captured image. The feature can be a floor, corner, wall, ceiling, storefront, window, other physical or architectural object or feature, or an arbitrary system or user-defined area within the image. The one or more processors update the augmented image such that the auxiliary object remains docked to the feature as the augmented image is update.

Abstract: A mobile device includes processor(s) coupled to memory, an input device, an output device, and a wireless transceiver. The mobile device can determine whether a destination is in a no wireless network coverage area. If so, then the route data used to provide navigation instructions to the destination is retained in the memory of the mobile device. In subsequent navigation, the mobile device can use the route data for navigation to a subsequent destination.

Abstract: A mobile device comprising one or more processors coupled to a camera configured to capture an image of a live scene, a display, and a memory can comprise the one or more processors configured to present an augmented image on the display. The augmented image can be based on the captured image and can include an image of an auxiliary object, such as a map, a browser, an additional camera view (local or remote), and/or an interface of a mobile application, docked to a feature comprising a physical object visible in the captured image. The feature can be a floor, corner, wall, ceiling, storefront, window, other physical or architectural object or feature, or an arbitrary system or user-defined area within the image. The one or more processors update the augmented image such that the auxiliary object remains docked to the feature as the augmented image is update.

Abstract: Disclosed embodiments facilitate efficient positioning of stations (STAs) one wireless networks. A method on an Access Point may determine, at a first time, availability of the Access Point (AP) for positioning; and transmit, based at least in part, on the determination, information indicative of the AP's availability for positioning. The transmitted information may comprise one or more of: STA-AP location determination availability, STA-AP location determination capability, whether AP-AP positioning is being performed; and/or the next scheduled AP-AP ranging session. In some embodiments, a STA may initiate location determination to determine a location of the STA based, at least in part, on indications of availability for positioning for one or more Access Points (APs) communicatively coupled to the STA. Each indication of availability may correspond to a distinct AP of the one or more APs, and the location determination may comprise either: STA-AP location determination, or passive location determination.

Abstract: Disclosed are systems, methods and techniques for calibrating an altimeter of a mobile device. For example, a characterized motion of a mobile device may be used to infer an altitude of the mobile device. If it is further inferred that the mobile device is in an outdoor environment, an altitude of the mobile device may be based on application of an estimated location of the mobile device to an altitude terrain map.

Abstract: A method of performing functions by proxy for a set of associated proximate devices is disclosed. In some embodiments, the method may comprise associating a set of user equipments (UEs), wherein upon determination that a first UE in the set is unavailable for performing a requested function, at least one alternate second UE in the associated set of UEs is selected, wherein the at least one second UE is proximate to the first UE and the at least one second UE is available for performing the requested function. The performance of the requested function on the at least one second UE is initiated.

Abstract: Securing access to a portable electronic device (PED), securing e-commerce transactions at an electronic device (ED) and dynamically adjusting system settings at a PED are disclosed. In an example, usage or mobility characteristics of the PED or ED (e.g., a location of the ED or PED, etc.) are compared with current parameters of the PED or ED. A determination as to whether to permit an operation (e.g., access, e-commerce transaction, etc.) at the ED or PED can be based at least in part upon a degree to which the current parameters conform with the usage or mobility characteristics. In another example, at least a current location of a PED can be used to determine which system settings to load at the PED.