Massively Scalable Indoor Positioning: The Skyhook Solution. Christopher Steger
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2 Massively Scalable Indoor Positioning: The Skyhook Solution Christopher Steger
3 Skyhook Positioning Overview WiFi-Based Positioning Metro-Scale Worldwide Coverage
4 Skyhook Positioning Overview WiFi-Based Positioning Metro-Scale Worldwide Coverage Beacons of Opportunity No ownership or control Asynchronous downlink signals Support any WiFienabled devices
5 Skyhook Positioning Overview WiFi-Based Positioning Metro-Scale Worldwide Coverage Data Gathering Driving surveys User feedback Example Use Cases Smartphone apps Sony PS Vita games MapQuest turn-byturn navigation
6 Skyhook Positioning Overview WiFi-Based Positioning Tens of countries Hundreds of cities Thousands of drivers Metro-Scale Worldwide Coverage Millions of kilometers driven Tens of millions of users Hundreds of millions of access points
7 Metro-Area vs. Indoor
8 Metro-Area vs. Indoor Surveying Cooperation Driveability GPS/INS equipment Operator skill level Maps/Floorplans Owner interest Single-ownership Deterministic dynamics
9 Metro-Area vs. Indoor Surveying Cooperation Driveability GPS/INS equipment Operator skill level Maps/Floorplans Owner interest Single-ownership Deterministic dynamics
10 Standardization Allow venue owners to improve coverage Provide support for different systems Control ownership and accessibility Remove barriers to entry for venue owners
11 Standardization Allow venue owners to improve coverage Provide support for different systems Control ownership and accessibility Remove barriers to entry for venue owners
12 Standardization Allow venue owners to improve coverage Provide support for different systems Control ownership and accessibility Remove barriers to entry for venue owners
13 Standardization Allow venue owners to improve coverage Provide support for different systems Control ownership and accessibility Remove barriers to entry for venue owners
14 Indoor Positioning Requirements Accuracy Scalability Compatibility Ownership
15 Indoor Positioning Requirements Accuracy Scalability Compatibility Ownership Venue detection Aisle/section level Minimize surveying Minimize installation Downlink signals Active scanning No venue crossover Limited feedback
16 Indoor Positioning Requirements Accuracy Scalability Compatibility Ownership Venue detection Aisle/section level Minimize surveying Minimize installation Downlink signals Active scanning No venue crossover Limited feedback
17 Indoor Positioning Requirements Accuracy Ultra-Scalability Compatibility Ownership Venue detection Aisle/section level No surveying No installation Downlink signals Active scanning No venue crossover Limited feedback
18 Indoor Positioning Requirements Accuracy Scalability Compatibility Ownership Venue detection Aisle/section level Minimize surveying Minimize installation Downlink signals Active scanning No venue crossover Limited feedback
19 Indoor Positioning Requirements Accuracy Scalability Compatibility Ownership Venue detection Aisle/section level Minimize surveying Minimize installation Downlink signals Active scanning No venue crossover Limited feedback
20 Indoor Positioning Solution No surveying Submit AP locations No installation Owner guidelines No characterization Adaptive algorithms Minimum overhead Maximum scalability
21 Indoor Positioning Solution No surveying Submit AP locations No installation Owner guidelines No characterization Adaptive algorithms Minimum overhead Maximum scalability
22 Indoor Positioning Solution No surveying Submit AP locations No installation Owner guidelines No characterization Adaptive algorithms Minimum overhead Maximum scalability
23 Indoor Positioning Solution No surveying Submit AP locations No installation Owner guidelines No characterization Adaptive algorithms Minimum overhead Maximum scalability
24 Case Studies Skyhook Office Home Depot Open plan Warehouse Drywall partitions Metal shelving 10 access points 19 access points 480 square meters 9625 square meters
25 Home Depot Results rs e t e m m et er s Median Error = 6.7 m
26 16 m ete r s Skyhook Office Results 30 m ete rs Median Error = 3.5 m
27 Insights and Outlook AP Placement AP Density Performance
28 Insights and Outlook AP Placement AP Density Performance Footprint coverage Perimeter placement 2-4x data needs ~3x median error 3-10 meters error Minimal overhead Extensible with any available scans
29 Insights and Outlook AP Placement AP Density Performance Footprint coverage Perimeter placement 2-4x data needs ~3x median error 3-10 meters error Minimal overhead Extensible with any available scans
30 Insights and Outlook AP Placement AP Density Performance Footprint coverage Perimeter placement 2-4x data needs ~3x median error 3-10 meters error Minimal overhead Extensible with any available scans
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