Microsoft Technology Licensing, LLC

Chih-Wei Wang

Jyh-Han Lin

Stephen P DiAcetis

Fernando Gonzalez

Cristina Del Amo Casado

Hiep V Khuu

Jonathan Matthew Kay

David Mahlon Hoover

Priyanka Bhargavi Vegesna

Steve DiAcetis

Stephen P Diacetis

Steve Diacetis

A system and method for calculating a position in response to a position request. Observed beacon data associated with the request is used to select a calculation method based on available data for a venue and device capabilities. If sufficient venue data based on previously verified beacon positions is available, a position calculation can resolve floor and venue information. If insufficient previously observed data is available for a venue, the position is calculated using 2D data based on GPS observations. Following the choice a calculation model, the calculation position is returned in response to the position request.

Adaptive position determination

The description relates to receiver gain offset. One example can obtain data sensed by a mobile device at a position. The example can evaluate the sensed data and survey data to identify a venue proximate to the position. The survey data of the venue can be organized into regions and then individual regions can be organized into sub-regions. The example can compare signal strengths of the sensed data to signal strengths of the survey data to identify the position relative to an individual region. The comparison can utilize a receiver gain offset estimation between the mobile device and another device that acquired the survey data. The example can refine the receiver gain offset estimation and attempt to identify the position relative to an individual sub-region within the individual region utilizing the refined receiver gain offset estimation.

Receiver gain offset

A determination of whether a mobile computing device is indoors or outdoors can incorporate any of a variety of factors to make an efficient and accurate determination of indoor-outdoor status. Such a status can be useful for use in conjunction with positioning services. Features such as bounding boxes, activity determination, and the like can be used to strike a balance between power consumption and accuracy. A positive user experience with fewer false detections can result.

Accounting for indoor-outdoor transitions during position determination

Example apparatus and methods concern rigorous survey-plan based sensor data collection where physical survey locations are correlated to logical locations rather than being tightly coupled to physical map locations. An embodiment includes accessing a venue map and a survey plan associated with the venue map. A survey plan includes a survey path defined by one or more logical survey points. A logical survey point includes a unique co-ordinate free identifier, a description of a recognizable location in the venue, and a co-ordinate configured to register the logical survey point to the corresponding venue map. A surveyor surveys the venue using the survey plan. Surveying the venue includes following the survey plan and acquiring sensor fingerprints at sensor reading points along the survey path. A fingerprint observation data store is populated with survey points that are registered to the survey plan. Survey points include sensor fingerprint data and correlation data.

Sensor data collection

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Redmond, WA, United States of America

Chih-Wei Wang