Abstract: Disclosed are techniques for detecting earliest arriving downlink signal peaks over all transmit diversity paths received at a same point in time. In an aspect, a wireless mobile device receives a wireless signal comprised of signals transmitted from a plurality of cells each providing a plurality of transmit diversity paths, calculates a channel energy response (CER) vector for each of the plurality of transmit diversity paths of each of the plurality of cells, constructs an overlaid CER vector for each of the plurality of cells, wherein the overlaid CER vector for a cell comprises an overlay of each CER vector of the plurality of transmit diversity paths of the cell, and determines an earliest arrival path of each of the plurality of cells based on the overlaid CER vector for that cell.

Abstract: Techniques for determining a relative Time Calibration (dTcal) value for a mobile device model are disclosed. An example of an apparatus according to the disclosure includes a memory, a receiver configured to receive measurements and a mobile device model information from mobile devices disposed in geographic areas, a processor configured to determine a baseline mobile device model and other mobile devices models based on the measurements, calculate a baseline measurement value based on the measurement values that correspond to the baseline mobile device model, determine difference values based on the baseline measurement value and the other mobile device model measurement values, determine a model specific dTcal value based on the difference values for at least one of the other mobile device models, and store the model specific dTcal value in the memory.

Abstract: Assistance data for indoor positioning is generated with vertical access areas, such as stairs, elevators, and escalators, identified along with predicted vertical movement models for the vertical access area. The predicted vertical movement models provide probabilities of movement to different floors by the vertical access areas. The assistance data may be generated by acquiring a floor plan data for a structure having multiple floors and analyzing the floor plan data to detect vertical access areas. The predicted vertical movement model for the vertical access area may then be generated and included in the assistance data along with the vertical access area. Mobile devices using the assistance data may provide vertical access area feedback information that may be used to modify the assistance data. For example, the probability of movement to different floors by a vertical access area may be modified, or additional vertical access areas identified.

Abstract: Method, device, computer program product, and apparatus to enable mobile device position optimization and reporting are described. Signals provided by a plurality of base transceiver stations (BTS) are received to determine a BTS-based position of the mobile device. A reference position of the mobile device is determined. A range measurement with respect to a target BTS is determined. In one aspect, one or more unreliable BTSs may be detected and reported based on a positioning measurement quality, a range measurement quality, or combinations thereof. In one aspect, the positioning measurement quality is determined based on a difference between the reference position of the mobile device and the BTS-based position of the mobile device. In one aspect, the range measurement quality is determined based on a difference between a measured range/distance and a reference/expected range/distance.

Abstract: Example methods, apparatuses, or articles of manufacture are disclosed herein that may be utilized, in whole or in part, to facilitate or support one or more operations or techniques for a ranging and/or localization service based, at least in part, on mobile communication device privilege, for example.

Abstract: Disclosed are methods, systems and devices for providing location based services in a venue. To estimate its location, in a particular implementation, a mobile device may obtain a measurement of a range to a transponder device positioned at a known location based on measurements of a signal round-trip time (RTT) in a message exchange with the transponder device. Positioning assistance data from a server may enable the mobile device to measure a delay at the transponder device in providing a response to a probe message to thereby more accurately measure the signal RTT.

Abstract: Methods and apparatus for processing positioning assistance data are provided. An exemplary method includes receiving, from a positioning server, virtual access point (VAP) data including a list of unique identifiers, and determining a location of a mobile device by using the VAP. The VAP data indicates that the unique identifiers included on the list identify signals originating from the same physical access point. The unique identifiers can be MAC addresses. In an example, the location determining the can include actively scanning a signal identified by a unique identifier on the list and not actively scanning a different signal identified by a different unique identifier also on the list. Not scanning the other MAC addresses that are on the access point's list and assigned to the mobile device keeps the mobile device from performing duplicative scanning that wastes time, processor cycles, and energy.

Abstract: Example methods, apparatuses, or articles of manufacture are disclosed herein that may be utilized, in whole or in part, to facilitate or support one or more operations or techniques for hybrid RTT and TOA positioning, such as for use in or with a mobile communication device, for example.

Abstract: Disclosed is a method and apparatus for correcting clocks for a plurality of local transmitters.

Abstract: Disclosed are methods, systems and devices for providing location based services in a venue. To estimate its location, in a particular implementation, a mobile device may obtain a measurement of a range to a transponder device positioned at a known location based on measurements of a signal round-trip time (RTT) in a message exchange with the transponder device. Positioning assistance data from a server may enable the mobile device to measure a delay at the transponder device in providing a response to a probe message to thereby more accurately measure the signal RTT.

Abstract: Particular embodiments disclosed herein are directed to methods, systems and/or devices for mobile assisted positioning. A mobile station may receive positioning assistance data from a server enabling or supporting one or more positioning operations in a venue. In a particular implementation, the mobile device may alter execution of one or more applications based, at least in part, on an indication of particular positioning services or operations enabled or supported by positioning assistance data available at the server.

Abstract: Example methods, apparatuses, or articles of manufacture are disclosed herein that may be utilized, in whole or in part, to facilitate or support one or more operations or techniques for hybrid RTT and TOA positioning, such as for use in or with a mobile communication device, for example.

Abstract: Method and apparatus for controlling crowdsourcing data are disclosed. The method may include comparing a set of access points detected in an area of a wireless environment by the mobile device to a set of known access points for the area, determining a level of crowdsourcing based at least in part on the comparison, where the level of crowdsourcing controls a quantity of crowdsourcing data to be collected, uploaded, or a combination thereof by the mobile device, and performing crowdsourcing, at least in part, in accordance with the determined level of crowdsourcing, where the determined level of crowdsourcing affects a frequency of crowdsourcing operations to be performed by the mobile device, a type of quantization to be applied to crowdsourcing data collected, or some combination thereof.

Abstract: A method and apparatus for reporting almanac versions and almanac identification by a mobile station to a server is provided. The server compares the almanac version and almanac identification held by the mobile station with almanac versions and almanac identifications held by the server. The server then sends instructions to the mobile station to match the server versions of the almanac versions and almanac identifications for the almanac versions and almanac identifications that the mobile station should hold.

Abstract: Various methods, apparatuses and/or articles of manufacture are provided which may be implemented in one or more electronic devices supporting mobile device positioning within an indoor environment. Tiered positioning assistance data (tiered-PAD) corresponding to an indoor environment may be generated and/or distributed. Mobile device positioning and/or navigation capabilities may be based, at least in part, on tiered-PAD corresponding to the indoor environment. Tiered-PAD may be provided to a plurality of mobile devices. A given mobile device may, for example, select applicable portion(s) of tiered-PAD to affect one or more positioning functions and/or the like which may be performed, at least in part, by the mobile device.

Abstract: Examples disclosed herein may relate to partitioning identity and/or position information for a plurality of wireless transmitters positioned within a geographical region into a plurality of sub-partitions.

Abstract: A method and apparatus for reporting almanac versions and almanac identification by a mobile station to a server is provided. The server compares the almanac version and almanac identification held by the mobile station with almanac versions and almanac identifications held by the server. The server then sends instructions to the mobile station to match the server versions of the almanac versions and almanac identifications for the almanac versions and almanac identifications that the mobile station should hold.

Abstract: A method for requesting assistance data includes, at a mobile device, determining an expected quality of service information, transmitting a request for assistance data, transmitting the expected quality of service information, and receiving an assistance data file comprising heat map information, wherein the heat map information includes a heat map grid resolution and a suitable quantization precision level for heat map values as determined, at least in part, based on the expected quality of service information.

Abstract: Methods, apparatuses, and devices are disclosed to estimate a position of a mobile device using, for example, beacon signals transmitted using virtual access points utilizing a single, physical transceiver. Determination that beacon signals emanate from a single, physical transceiver may be based, at least in part, on a similarity among acquired beacon signals conveying identifiers, such as media access control identification (MAC ID) addresses and/or basic service set identifiers (BSSIDs), and on measurement of beacon signal characteristics, such as received signal strength at a mobile device and/or round trip time between the mobile device and the transceiver.

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.