Abstract: Methods, apparatuses and articles of manufacture are provided which may be implemented, at least in part, in a mobile device and used to affect one or more motion models and/or the like based, at least in part, on one or more determined range rates for one or more wireless signals acquired from one or more terrestrial transmitters. Here, for example, a range rate may be determined based, at least in part, on a measured phase value and/or a measured Doppler value.

Abstract: Methods and apparatuses of providing positioning assistance data are disclosed. According to aspects of the present disclosure, a venue is partitioned into a plurality of tiles, with each tile represents an area of the venue. Measurements from each tile with respect to one or more access points in the venue may be represented as one or more images. The one or more images are then processed to generate a compressed positioning assistance data of the venue. The compressed positioning assistance data may then be provided to a mobile device. Position of a mobile device may be determined using the compressed positioning assistance data of the venue.

Abstract: Systems and methods are disclosed for determining the floors on which APs are located for WiFi-based indoor positioning systems. A data collection phase is followed by a data analysis phase. During data collection, measurement data to observed APs may be collected from various locations on different floors. The measurements data may include received signal strength indication (RSSI), optional round-trip-time (RTT) data to the APs, and floor information of the measurement locations. Measurement data may also be collected from crowd sourced data without floor information of the measurement locations. In data analysis, the collected measurement data are analyzed using various algorithms to determine if APs belong to the same floor and to assign APs on the same floor to the same cluster. APs on different floors may thus be assigned to different clusters. If the floor information of the measurement locations is known, each cluster may be assigned a floor number.

Abstract: Control and feature systems for processing signals from a satellite positioning system include an expert system receiver manager; a joint detection, carrier centering and bit sync acquisition subsystem; peak detection; a multi-dimensional measurement interpolation subsystem; a system for mode switching between a navigational signal; and power control module for receiver.

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: Methods and devices are described for merging maps. In one potential embodiment a method may comprise receiving an indication of at least one plurality of geographically proximate points, where each of the at least one plurality of geographically proximate points are determined by at least one access point in communication with one or more mobile devices. A first and second map may then be received, where the first map and the second map each cover a first area such that the first area is in both the first map and the second map. The first map and the second map may then be merged by matching a mapping of a first portion of an indication of the at least one plurality of geographically proximate points on the first map and a second portion of an indication of an at least one plurality of geographically proximate points on the second map.

Abstract: A system for synchronizing a receiver of a bit stream to the bit stream include a correlator to remove the PN code modulation and to generate a stream of time sequence values (samples) from the received bits. Multiple accumulators are included, each accumulator corresponding to a different offset from a first time period. The accumulators add a number of values equal to a number of samples in a bit period. Multiple magnitude calculators receive sums from the corresponding accumulators and calculates respective magnitudes. Multiple non-coherent summers are then used to add the magnitudes for each offset in each bit period for all of the received bits. The outputs of the non-coherent summers are analyzed to find the highest value, to identify the location of the bit transition in the bit period.

Abstract: Techniques are provided, which may be implemented via various methods, apparatuses, and/or articles of manufacture. For example, an electronic device may obtain an estimated location of a mobile device, determine a quality of a geometric distribution of transmitting devices capable of transmitting wireless signals to the mobile device at the estimated location, and assign an uncertainty to the estimated location. In certain implementations, an electronic device may further determine an adapted transmission setting for a transmitting device and transmit a corresponding message to the transmitting device. In certain implementations, an electronic device may identify adapted assistance data for the mobile device and transmit a corresponding message to one or more other electronic devices.

Abstract: An apparatus and method for merging a disjoint pair of maps comprising a digital building map that includes a floor plan and an access point (AP) map that includes identifiers for a plurality of access points is presented. In some embodiments, a first trajectory plot, of a mobile device, relative to the AP map, is received and a plurality of hypotheses is set, where each hypothesis defines a unique translation between the AP map and the building map. A plurality of costs may be computed for the first trajectory, where each cost of the first trajectory corresponds to a distinct hypothesis in the plurality of hypotheses. The hypothesis where the first trajectory has the lowest cost relative to the other hypotheses may be selected.

Abstract: A method for providing tiered indoor positioning service includes: receiving a request for assistance data from a mobile device; receiving expected quality of service information from the mobile device; generating an adaptive assistance data file comprising heat map data based at least in part on the received expected quality of service information; and transmitting the adaptive assistance data file to the mobile device.

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: Systems and methods for managing positioning assistance data for large regions are described herein. An example of a method for retrieving positioning assistance data at a mobile device as described herein includes identifying a master region in which the mobile device is located and sub-region definitions associated with the master region, where the sub-region definitions are indicative of area occupied by the sub-regions within the master region; obtaining a first estimated position of the mobile device within the master region; defining a projected area centered at the first estimated position; and obtaining first assistance data corresponding to at least one sub-region that overlaps the projected area.

Abstract: Methods, systems, and devices are described for managing broadcasts of data in wireless communications. A request to join a multicast session is received. A plurality of broadcast technology based identifiers associated with the multicast session are received. Each broadcast technology based identifier identifies one of a plurality of radio access technologies (RATs) broadcasting the multicast session. One of the plurality of RATs is selected. A multicast stream of data associated with the multicast session is received from the selected RAT.

Abstract: This disclosure presents methods, systems, computer-readable media, and apparatuses for determining a limited but sufficient group of APs suitable to be used for efficient and accurate wireless device location fixing. Certain embodiments relate to methods for eliminating unsuitable APs even when the geographic position of APs in the area of interest is not known a priori.

Abstract: Techniques are provided for providing a processing delay estimate of an access point, or turnaround calibration function (TCF), associated with round trip time (RTT) measurements. Mobile devices, access points, and/or other systems can utilize these techniques to derive processing delay from the RTT measurements. Crowdsourcing can also be used to help increase the accuracy of the processing delay estimate, which can be propagated to multiple devices.

Abstract: Systems, apparatus and methods for determining a cyclic shift delay (CSD) mode from a plurality of CSD modes is disclosed. A received OFDM signal is converted to a channel impulse response (CIR) signal in the time domain and/or a channel frequency response (CFR) signal in the frequency domain. Matched filters and a comparator are used to determine a most likely current CSD mode. Alternatively, a classifier is used with a number of inputs including outputs from two or more matched filters and one or more outputs from a feature extractor. The feature extractor extracts features in the time domain from the CIR signal and/or in the frequency domain from the CFR signal useful in distinguishing various CSD modes.

Abstract: The subject matter disclosed herein relates to receiving one or more SPS signals at two or more physically separated antennae. In an aspect, signals from the physically separated antennae may be downconverted into complex digital signals that may undergo further processing to improve one or more performance metrics related to position estimation operations, for example.

Abstract: Methods and apparatus for wireless communication in a mobile device that includes relinquishing a client side high level operation system (HLOS) internet protocol (IP) context of a user equipment (UE), when the UE, connected to a network via a Wireless Wide Area Network (WWAN) connection, is transported to a Wireless Local Area Network (WLAN) connection area. Aspects of the methods and apparatus include maintaining a Packet Data Protocol (PDP) context of the UE, when the UE, connected to the network via the WWAN connection, is transported to a WLAN connection area. Aspects of the methods and apparatus include setting a linger timer for a certain period of time to defer deactivation of the PDP context and deactivating the PDP context when the linger timer expires.

Abstract: Methods, apparatuses and articles of manufacture are provided which may be implemented, at least in part, in a mobile device and used to affect one or more motion models and/or the like based, at least in part, on one or more determined range rates for one or more wireless signals acquired from one or more terrestrial transmitters. Here, for example, a range rate may be determined based, at least in part, on a measured phase value and/or a measured Doppler value.

Abstract: An apparatus and method for merging a disjoint pair of maps comprising a digital building map that includes a floor plan and an access point (AP) map that includes identifiers for a plurality of access points is presented. In some embodiments, a first trajectory plot, of a mobile device, relative to the AP map, is received and a plurality of hypotheses is set, where each hypothesis defines a unique translation between the AP map and the building map. A plurality of costs may be computed for the first trajectory, where each cost of the first trajectory corresponds to a distinct hypothesis in the plurality of hypotheses. The hypothesis where the first trajectory has the lowest cost relative to the other hypotheses may be selected.