Abstract: Methods, apparatuses, and devices are disclosed that may be used to estimate a location of a mobile device using, for example, one more receiver gains that may bring about adjustment of received signal strength indications of a radio heatmap. Such adjustment may allow a mobile device to accurately estimate a present location of a mobile device using, for example, a radio heatmap.

Abstract: Various methods, apparatuses and/or articles of manufacture are provided which may be implemented by one or more electronic devices to identify potential anomalies in one or more electronic files used to support mobile device positioning within a specific environment. Various methods, apparatuses and/or articles of manufacture are also provided which may be implemented by one or more electronic devices to alter one or more electronic files used to support mobile device positioning within a specific environment.

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: Method, mobile device, computer program product, and apparatus for performing Fine Grain Position Data Collection are described. In one embodiment, a server can receive position data collected by a mobile device with a first positioning configuration. In one embodiment, the server can determine, from the position data received at the server, a mobile device position and create a second positioning configuration according to at least the mobile device position. In one embodiment, the server can send the second positioning configuration to the mobile device. In one embodiment, a mobile device can collect position data according to a first positioning configuration and send the position data to a server. In one embodiment, the mobile device can receive a second positioning configuration from the server created according to at least the mobile device position.

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: In a tracking of a position and motion of a device, a set of hypothetical locations of the device is generated. Hypothetical locations among the set are propagated to respective hypothetical next locations, using respective location-specific propagation models associated with the hypothetical locations. Sensor information having correlation to a location of the device is received. An importance weighting for the hypothetical next locations is calculated using the new sensor information. Probable locations of the device are generated using the importance weighting.

Abstract: Described are an apparatus and a method for increasing an uncertainty associated with an estimated position of the apparatus. Signals transmitted from a plurality of stationary transmitters may be acquired, and a difference in received carrier frequency of the acquired signals may be measured. The lower bound of a speed of a mobile device may be determined based at least in part on the measured difference in received carrier frequency. The uncertainty may be increased based at least in part on the lower bound of the speed.

Abstract: Determining the early arrival path (EAP) based on a channel energy response (CER) can involve the use one or more masks to identify one or more peaks in the CER. Masks can be applied to the CER in an iterative process that can help identify the earliest peak corresponding to the EAP. Alias cancelation may also be implemented.

Abstract: Systems, apparatus and methods for a mobile device and a base station almanac server to throttle crowdsourcing information are presented. The crowdsourcing information is used to improve a location of a base station in a base station almanac. A portion of the base station almanac is provided to a mobile device. For example, the mobile device may identify its current cell and request the base station almanac. The mobile device records crowdsourcing information to identify, for each particular base station of at least one base station, a cellular identifier for the particular base station, optional ranging information between the particular base station and the mobile device, and an independent position of the mobile device. The independent position of the mobile device may be formed from global navigation satellite system (GNSS) or station signals independent of the at least one base station.

Abstract: Techniques for transferring trust between networks are described herein. An example of a method of using a mobile device to transfer trust between networks described herein includes receiving WAN base station information including a WAN base station trustworthiness value, determining a WAN position estimate for the mobile device based on the WAN base station information, receiving access point information including an access point trustworthiness value, determining an access point position estimate for the mobile device based on the access point information, determining if the WAN position estimate and the access point position estimate are corroborated, and increasing the access point trustworthiness value if the WAN position estimate and the access point position estimate are corroborated and the WAN base station trustworthiness value is higher than the access point trustworthiness value.

Abstract: Systems and methods of network based positioning include a server configured to assign priority levels to mobile devices locatable within the network, and allocate network resources for network based positioning of the locatable mobile devices, based on the corresponding priority levels assigned to the mobile devices. The server may further be configured to admit only a selected subset of the locatable mobile devices into the network for purposes of network based positioning and deny admission to the remaining locatable mobile devices, wherein the selected subset can be determined based on an attribute of the mobile device and/or a characteristic of the user of the mobile device.

Abstract: Method and apparatus for processing access point (AP) crowdsourcing data are disclosed. In one embodiment, the method comprises receiving WiFi scan lists and their corresponding location descriptions, consolidating the WiFi scan lists and their corresponding location descriptions based at least in part on a set of selection criteria to generate a WiFi AP record, and uploading the WiFi AP record to a crowdsourcing server. The method consolidating the WiFi scan lists and their corresponding location descriptions comprises quantizing data received in accordance with time segment of the WiFi scan lists and their corresponding location descriptions. The set of selection criteria comprises a maximum number of scan lists to be uploaded in a predetermined period of time, a maximum number of scan lists to be uploaded in a single upload, ratio of MNoO to remaining unprocessed observations, similarity between scan lists, and comparison of HEPE values between similar scan lists.

Abstract: Systems, methods, and devices are described for estimating delay difference between two receive chains of a mobile device. The mobile device receives a first signal from a base station using a first receive chain, and receives a second signal using a second receive chain from a common, remote timing source for the base station and the mobile device. In addition, the mobile device obtains a transmit delay parameter associated with the base station and estimates, based at least in part on the transmit delay parameter, an offset value corresponding to a difference between amount of time for the first signal to pass through the first receive chain of the mobile device and amount of time for the second signal to pass through the second receive chain of the mobile device. The mobile device may store the offset value for subsequent use in estimating its position.

Abstract: Systems, apparatus and methods for a mobile device and a base station almanac server to throttle crowdsourcing information are presented. The crowdsourcing information is used to improve a location of a base station in a base station almanac. A portion of the base station almanac is provided to a mobile device. For example, the mobile device may identify its current cell and request the base station almanac. The mobile device records crowdsourcing information to identify, for each particular base station of at least one base station, a cellular identifier for the particular base station, optional ranging information between the particular base station and the mobile device, and an independent position of the mobile device. The independent position of the mobile device may be formed from global navigation satellite system (GNSS) or station signals independent of the at least one base station.

Abstract: The present disclosure describes methods, systems, computer-readable media, and apparatuses for evaluating the suitability of AP signaling for RTT-based location calculation. Various evaluation methods are disclosed to enable the signaling to be tested for consistency and reliability. An AP may be analyzed by a mobile device or other communications mechanism to determine whether the AP is suitable for RTT-based location signaling. A mobile device receives multiple signals from an evaluated AP at various locations in the indoor area, and derives RTT data from the signals. The RTT data is analyzed to determine whether RTT data from the AP should be used by mobile devices in the process of calculating their location.

Abstract: Methods, devices, and systems are described for using multiple measurements including Doppler measurements from a mobile device to identify the position of the base station. Repeated Doppler and velocity measurements from different locations, with measurement groups taken at the same time or within a certain time frame, may be used to identify the location of a base station with which the mobile device is communicating.

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: Techniques described herein enable a mobile device in selecting an access point (AP) from a plurality of APs for determining the position of the mobile device. In one aspect, the mobile device receives assistance data including traffic load information associated with one or more APs. The mobile device may determine which AP to communicate with based on the traffic load information associated with a plurality of APs. The assistance data including the traffic load information associated with the plurality of APs may be compiled using information from a controller connected to the plurality of APs, crowdsourcing (using information from a plurality of mobile devices over time), or information regarding the traffic conditions received from the plurality of APs. In one implementation, the mobile device may receive the assistance data information including the traffic load information from an assistance data (AD) Server.

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: Methods, devices, and systems are described for using multiple measurements including Doppler measurements from a mobile device to identify the position of the base station. Repeated Doppler and velocity measurements from different locations, with measurement groups taken at the same time or within a certain time frame, may be used to identify the location of a base station with which the mobile device is communicating.