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Accounting for indoor-outdoor transitions during position determination

A technology of current location and external positioning, which is applied in the direction of location information-based services, positioning, measuring devices, etc.

Active Publication Date: 2017-08-18
MICROSOFT TECH LICENSING LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the problem of determining whether the phone is actually indoors or outdoors remains
Since there can be significant challenges in making such a determination, there is still room for improvement

Method used

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  • Accounting for indoor-outdoor transitions during position determination
  • Accounting for indoor-outdoor transitions during position determination
  • Accounting for indoor-outdoor transitions during position determination

Examples

Experimental program
Comparison scheme
Effect test

example 2

[0025] Example 2 - Example system considering indoor-outdoor transition

[0026] figure 1 A block diagram of an example system 100 that considers indoor-outdoor transitions during position determination. The location determination tool 150 itself is shown for context and may be implemented separately from or in conjunction with the described techniques. In this example, the location determination tool 150 includes an indoor-outdoor state tracker 165 that can receive a plurality of indoor-outdoor state determination factors 110A-N (e.g., by means of the location determination tool 150 ) to determine the indoor state of the mobile device 105 . - Determination of an outdoor state 180 (eg, a stored state 180 indicating whether the device 105 is indoors or outdoors).

[0027] As shown, factors 110A-N may be calculated based on data received from one or more corresponding hardware sensors 120A-B of device 105 . In practice, sensors 120A-B may be used to determine one or more fa...

example 23

[0152] Example 23 - Example Bounding Polygons for Indoor-Outdoor Transitions

[0153] image 3 To illustrate a map 300 of one example bounding polygon 340 for a field 320 approached by a mobile computing device 360 ​​in an indoor-outdoor transition, which may be used in any of the examples herein. In this example, mobile computing device 360 ​​is moving toward indoor court 320 along path 370 . The stored representation of bounding polygon 340 may be used to determine whether device 360 ​​is approaching an indoor-outdoor transition (eg, entering venue 320 ). A site buffer zone 350 (eg, a transition zone) around the site 320 may be used to provide sufficient time for detection and consideration of the determination. Therefore, the polygon is drawn slightly outside the physical boundaries of the field 320 .

[0154] For purposes of discussion, ideal transition points 390 (eg, entry gates) may be considered and used in the design polygon 340 as well as various other factors d...

example 25-

[0166] Example 25 - Example system implementing bounding polygons

[0167] Figure 4 for example image 3 One example system 400 for detecting bounding polygons near indoor-outdoor transitions is implemented in the illustrated scheme. In this example, the current position 410A derived from the hardware sensor 420A and the bounding polygon 410B is used as input to the indoor-outdoor state tracker 465 of the position determination tool 450 .

[0168] The indoor-outdoor transition indicator 468 may be set depending on whether the location 410A is within the bounding polygon 410B. In the case of a bounding box, polygon 410B may be represented by four points. Other shapes can be represented similarly. Polygon 410B may be any of the bounding polygons or bounding boxes described herein, and may be drawn to include the field buffer.

[0169] The information representing the bounding polygon 410B can be extracted from the map data to utilize the map delivery system. However, su...

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Abstract

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.

Description

Background technique [0001] Mobile phones now have features and applications that provide useful location information. Such location information can be used for a variety of purposes, including navigation with the aid of digital maps. [0002] A more recent development is the use of indoor positioning systems. Traditional positioning technologies such as GPS are wobbly when the phone is moved indoors. However, indoor positioning systems can play a role where traditional technologies miss. As a result, the phone can continue to provide a positive user experience even when the phone is in indoor venues such as office buildings, stores, transportation stations, and the like. [0003] However, the problem of determining whether the phone is actually indoors or outdoors remains. Since there can be significant challenges in making such a determination, there is still room for improvement. Contents of the invention [0004] This Summary is provided to introduce a selection of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C21/20G01S19/48G01S5/02H04W4/02H04W4/04H04W4/029H04W4/021H04W4/33
CPCG01C21/206G01S19/48H04W4/021G01S5/015H04W4/029H04W4/33
Inventor J.凯王智伟P.B.维格斯纳林志翰H.克胡C.德尔阿莫卡萨多D.胡佛S.P.迪亚塞蒂斯F.冈萨雷斯
Owner MICROSOFT TECH LICENSING LLC