Abstract:
Techniques are disclosed for estimating a cell center and/or coverage area of an antenna, and geographic coverage of cell IDs associated therewith, using crowdsourcing data from mobile phones. The techniques described herein can utilize two different data sets to accommodate changes in the geographical coverage associated with a cell ID and reduce the probability of putting the cell center estimate in awkward or unlikely locations.
Abstract:
Systems, apparatus and methods for estimating a location of a mobile device are presented. Before computing a location estimate, the mobile device groups a plurality of access points into two or more categories (for example, a first list of access points having a first characteristic and a second list of access points having a second characteristic). Round-trip time (RTT) measurements are computed for access points in the first list. A Short Interframe Space (SIFS) value may be determined for each access point in the first list or generally SIFT representing the first list as a whole. The RTT measurements are compensated with the appropriate SIFS value. The mobile device then computes its location or position fix estimate using the compensated RTT values while excluding less accurate RTT values from other access points. As a result, the location estimate eliminates adverse influent from some access points.
Abstract:
Disclosed are systems, methods and devices for providing positioning assistance data to a mobile device. In a particular implementation, a mobile device may receive parameters representing an inference model. The mobile device may then apply observations to the inference model to classify the location of the mobile device as being in a particular region. The mobile device may then request positioning assistance data based, at least in part, on the particular region.
Abstract:
Method, device, and computer program product that may improve communications between a mobile device and an access point device are disclosed. In one embodiment, a method of communicating between a mobile device and an access point device comprises control a plurality of beacons in the access point device, establishing a communication between the access point device with the mobile device using a first beacon in the plurality of beacons, broadcasting availability of the plurality of beacons in the access point device via the first beacon, and establishing the communication with the mobile device using a second beacon in the plurality of beacons.
Abstract:
Disclosed is an apparatus and method for collaborative navigation and operation on two mobile devices. The method may include establishing a wireless connection between a first mobile device and a second mobile device, and generating navigation data by the first mobile device for collaborative navigation based on a location of the first mobile device. The method may also include selecting a first subset of the navigation data for display by the first mobile device, and selecting a second subset of the navigation data for display by the second mobile device. The method may also include transferring the second subset of navigation data to the second mobile device and coordinating the display of the first subset of navigation data on the first mobile device with display of the second subset of navigation data on the second mobile device.
Abstract:
Approaches for enhancing range-based position determination using pairwise error detection and compensation are provided. One method for enhancing a position estimate of a first node may include performing measurements at the first node using a signal received from a second node, and receiving measurements from the second node. The received measurements may be performed at the second node using a signal provided by the first node. The method may further include determining pairwise comparisons of the performed measurements and the received measurements, and compensating the measurements performed at the first node, based on the pairwise comparisons, for estimating the position of the first node. Systems and apparatuses for performing the various position determination methods are further presented.
Abstract:
Various arrangements for determining a location of a base station without timing synchronization are presented. A mobile device may determine that it is moving faster than a threshold velocity. The mobile device may capture a first unsynchronized time of arrival (TOA) measurement and determine an associated first location, wherein the first unsynchronized TOA measurement is based on a first unsynchronized timing measurement of a first received reference signal. The mobile device may capture a second unsynchronized TOA measurement and determine an associated second location, wherein the second unsynchronized TOA measurement is based on a second unsynchronized timing measurement of a second received reference signal. Based on the mobile device moving faster than the threshold velocity, the first location, the second location, the first unsynchronized TOA measurement, and the second unsynchronized TOA measurement may be used for determining the location of the base station.
Abstract:
Methods and apparatuses of providing assistance data of a venue to a mobile device are disclosed. According to aspects of the present disclosure, for the same area, multiple or different versions of assistance data may be generated. Restrictions may be applied by access area, such that positioning grid, heat maps, and maps can be restricted to certain sections of the venue; and point of interests (POIs) and search features may be provided based on at least one of user credentials, time-based restrictions, ticket-based restrictions, or loyalty-based restrictions, or any combination thereof.
Abstract:
Various techniques are provided which may be implemented as methods, apparatuses and articles of manufacture for use by a mobile device. In certain example implementations, a mobile device may process a barometric pressure measurement indicative of an altitude effect and a weather effect to determine a first parameter corresponding to the altitude effect and a second parameter corresponding to the weather. Such a mobile device may further determine whether it may be transitioning or may have transitioned from an initial level to another level of a multiple level structure based, at least in part, on the first and second parameters.
Abstract:
Methods, systems, computer-readable media, and apparatuses for obtaining a location fix for a mobile device are presented. In some embodiments, a method includes identifying a region in which the mobile device is located. The method further includes receiving assistance data pertaining to one or more access points within the region, wherein the assistance data is indicative of signal information pertaining to the one or more access points at multiple locations within the region. The method also includes generating, at the mobile device, a heatmap representative of multiple locations within the region as compared against the signal information pertaining to the one or more access points that are in communication range. The method additionally includes determining the location fix based at least in part on the generated heatmap.