Philadelphia, May 24, 2005 Integration Technology Track Location determining technologies: RFID, Wi-Fi, GPS LBS Location

Philadelphia, May 2–4, 2005

www.locationintelligence.net

Integration Technology TrackLocation determining technologies:RFID, Wi-Fi, GPS & LBS

Location Based Systems that Help You Capitalize On Your Existing Wireless Infrastructure

Richard BarnwellCTO – PanGo Networks [email protected]



Agenda• Is there a business case for local area

Location Based Services (LBS)?– Case study: ROI for Hospital Asset Tracking

• How do you add location awareness to a local area in a cost effective way?– Wi-Fi based LBS



Local Area LBS Case Study: The ROI of Asset Tracking in a Health Care System

Quality of care

OperatingCosts

EquipmentInvestment

ROI

Improve workflow& efficiency

Reduce costs

Eliminate overinvestment

Where is the

equipment?



The ROI benefit numbers for Asset Tracking in a hospital

• Reduced equipment purchase: 10% $150,000• Reduced equipment rental: 15% $60,000• Reduced maintenance/support labor: 10% $40,000• Reduced clinical labor: 2% $150,000• Improved hospital workflow: 1-2% $200,000• Improved employee satisfaction soft• Improved patient satisfaction soft• Improved quality of care (could develop hard est.) soft• Improved regulatory compliance (could develop hard est.) soft

------------ Annual benefit $600,000 **

=======

** Numbers are conservative values drawn from US hospital systems with 250-500 beds

Payback period typically less than 1 year



Options for local area LBS

• Use the same technologies used in the wide area e.g. GPS, Cellular network based– Not really suitable due to poor availability and accuracy

• Use a specialized radio network designed solely for Location determination– Portal/Choke-Point based, and/or– Full area continuous…Real Time Location System (RTLS)– Tend to be costly and single purpose

• Add location awareness to a radio network youalready have deployed e.g. Wi-Fi



Wi-Fi networks can now support data, voice& location

802.11 WLAN Infrastructure

DATA VOICE LOCATION

Data Apps Location AppsVoice Apps

e.g., Physician Order Entry e.g., VOIP “Badges” e.g., Asset Tracking



Why use Wi-Fi for local area LBS?

• Because you get to leverage the single infrastructure cost for multiple services…data, voice & location.– So, the marginal cost of adding Location is very low

• Because location will become an “equity of the network” in 2005 and beyond as the WLAN infrastructure providers make location available as a feature of their offerings

• Because Wi-Fi is getting better all the time…a/b/g…i/e/r…k/v…n…the alphabet goes on!



The underlying techniques for adding location awareness to Wi-Fi

AngleAOA

TimeTOA/TDOA

PowerRSSI

Location

• Not currently available in Wi-Fi

Available in Wi-Fi

• Currently available in Wi-Fi only using proprietary hardware. Expected to standardize in next few years

802.11k adds location report to

MAC



Use RF Power to determine location based on empirical survey or theoretical model

AP 2 AP 3 AP 5

Location 1 -48 -35 -60

Location 2 -61 -50 -40

-35

-60-48

Location 1 Location 2

AP 3

AP 2

AP 5



The components of a Wi-Fi LBS solution…just add software!

ApplicationsAsset Tracking, People Tracking, Yard Management

MiddlewareDetermines location or receives feed from networkSupports complementary location providers e.g. Passive RFID

ReadersNO additional readers…just use the Wi-Fi APs

Track-able devicesWi-Fi devices e.g. PDAs, Laptops, Active Tags



Summary

• There is a significant business case for deploying LBS in the local area– Intra-Enterprise Asset Tracking is one example of a

key category of local area LBS Apps

• Standard Wi-Fi infrastructure can be enhanced to provide location through the simple addition of software

• Wi-Fi Active Tags can be affixed to items that are not 802.11 enabled so almost anything is locatable

Documents

Philadelphia, May 24, 2005 Integration Technology Track Location determining technologies: RFID, Wi-Fi, GPS LBS Location