Local Positioning Mike Overy Chair Local Positioning WG Local Positioning v5.ppt #1 Mike Overy

Local Positioning v5.ppt #2 Mike Overy Local Positioning - Content: Introduction Introduction Applications Applications How it works How it works Usage scenarios Usage scenarios Key points Key points

Local Positioning v5.ppt #3 Mike Overy Local Positioning - Introduction Local Positioning is any positioning technology, used to determine the position of devices, relative to one or more other nearby devices, whose positions are known. Local Positioning is any positioning technology, used to determine the position of devices, relative to one or more other nearby devices, whose positions are known. There are already several proprietary wireless Local Positioning technologies in use, for niche applications. There are already several proprietary wireless Local Positioning technologies in use, for niche applications. Bluetooth has the potential to offer Local Positioning at minimal cost and with maximum geographic coverage. Bluetooth has the potential to offer Local Positioning at minimal cost and with maximum geographic coverage. 'Pervasive computing' will require location awareness. 'Pervasive computing' will require location awareness.

Local Positioning v5.ppt #4 Mike Overy Local Positioning - Applications Class 1 For devices with no other positioning capability. e.g. for: Laptops, notebooks, PDA's, tag's etc. Class 1 For devices with no other positioning capability. e.g. for: Laptops, notebooks, PDA's, tag's etc. Class 2 For devices with GPS and / or cellular positioning capability, to improve performance indoors and in built up locations. e.g. for: cellphones. Class 2 For devices with GPS and / or cellular positioning capability, to improve performance indoors and in built up locations. e.g. for: cellphones. Target is to provide GPS like accuracy (3-30m outdoors), in indoor environments. Target is to provide GPS like accuracy (3-30m outdoors), in indoor environments. Applications include finding: people, places, services, items etc. Applications include finding: people, places, services, items etc. The market for location based services is forecast to be huge. e.g. Strategis Group estimate >$30b in The market for location based services is forecast to be huge. e.g. Strategis Group estimate >$30b in 2005.

Local Positioning v5.ppt #5 Mike Overy Positioning - Application Areas Accuracy (metres) Cellular Positioning K3K10K30K Bluetooth Local Positioning Rural Urban eg E-OTD Cell I.D. GPS City/ Indoor Remote Precision Local Positioning (UWB)

Local Positioning v5.ppt #6 Mike Overy Local Positioning - How it works Relies on the short range of Bluetooth connections ( ~ 10m). Relies on the short range of Bluetooth connections ( ~ 10m). Device position equals: Device position equals: source position, +/- (accuracy + estimated range). Accuracy can be improved by picking up more devices and/or estimating proximity (distance apart). Accuracy can be improved by picking up more devices and/or estimating proximity (distance apart). Proximity can be estimated based on: Proximity can be estimated based on: range, signal strength, and/or time delay. Signal strength is easily measured, but correlation to distance is fuzzy. Signal strength is easily measured, but correlation to distance is fuzzy. Time delay would require additional hardware to measure, but correlates exactly to distance. Time delay would require additional hardware to measure, but correlates exactly to distance. The time delay method is not currently supported for Bluetooth.

Local Positioning v5.ppt #7 Mike Overy Local Positioning - Usage Scenario #1 Portable device picks up position data from nearby device(s). Portable device picks up position data from nearby device(s). Nearby devices may be pre-programmed 'beacons'. Nearby devices may be pre-programmed 'beacons'. Nearby devices may instead have their own positioning capability, such as GPS and/or LP. Nearby devices may instead have their own positioning capability, such as GPS and/or LP. Data content includes: latitude, longitude and accuracy. Data content includes: latitude, longitude and accuracy.

Local Positioning v5.ppt #8 Mike Overy Local Positioning - Usage Scenario #2 Laptop, PDA or phone accesses nearby GPS receiver. Laptop, PDA or phone accesses nearby GPS receiver. e.g. I run a positioning application on my laptop, which gets its position from the phone in my pocket. e.g. I run a positioning application on my laptop, which gets its position from the phone in my pocket. 2 part solution, i.e. cable replacement. 2 part solution, i.e. cable replacement. Devices may be 'pre-registered'. Devices may be 'pre-registered'. Can 'remotely activate' positioning device, if shut down. Can 'remotely activate' positioning device, if shut down. Also supports use of GPS in vehicles. Also supports use of GPS in vehicles.

Local Positioning v5.ppt #9 Mike Overy Local Positioning - Key Benefits Local Positioning is targeting to maximise the value of Location, with minimum cost. Local Positioning is targeting to maximise the value of Location, with minimum cost. Potential to provide GPS like accuracy indoors, virtually 'for free'. Potential to provide GPS like accuracy indoors, virtually 'for free'. Numerous Location Dependent applications and services are possible (but not part of the profile). Numerous Location Dependent applications and services are possible (but not part of the profile). Authors prediction: "as GPS and Bluetooth become widely used, most wireless devices will include positioning capability". Authors prediction: "as GPS and Bluetooth become widely used, most wireless devices will include positioning capability".