Experiences of developing and deploying a context-aware tourist guide: the GUIDE project
MobiCom '00 Proceedings of the 6th annual international conference on Mobile computing and networking
WLAN Location Determination via Clustering and Probability Distributions
PERCOM '03 Proceedings of the First IEEE International Conference on Pervasive Computing and Communications
A taxonomy of indoor and outdoor positioning techniques for mobile location services
ACM SIGecom Exchanges - Mobile commerce
Challenge: ubiquitous location-aware computing and the "place lab" initiative
Proceedings of the 1st ACM international workshop on Wireless mobile applications and services on WLAN hotspots
Object-oriented middleware for location-aware systems
Proceedings of the 2004 ACM symposium on Applied computing
Error characteristics and calibration-free techniques for wireless LAN-based location estimation
Proceedings of the second international workshop on Mobility management & wireless access protocols
LOCATOR: location estimation system For wireless LANs
Proceedings of the 2nd ACM international workshop on Wireless mobile applications and services on WLAN hotspots
MiddleWhere: a middleware for location awareness in ubiquitous computing applications
Proceedings of the 5th ACM/IFIP/USENIX international conference on Middleware
Delivering real-world ubiquitous location systems
Communications of the ACM - The disappearing computer
The Horus WLAN location determination system
Proceedings of the 3rd international conference on Mobile systems, applications, and services
LORE: an infrastructure to support location-aware services
IBM Journal of Research and Development
A wireless LAN-based indoor positioning technology
IBM Journal of Research and Development
Mobile guide applications using representative visualizations
MM '08 Proceedings of the 16th ACM international conference on Multimedia
WHLocator: hybrid indoor positioning system
Proceedings of the 2009 international conference on Pervasive services
Challenges and business models for mobile location-based services and advertising
Communications of the ACM
Analysis of WLAN's received signal strength indication for indoor location fingerprinting
Pervasive and Mobile Computing
Autonomous WLAN sensors for ad hoc indoor localization
EUROCAST'11 Proceedings of the 13th international conference on Computer Aided Systems Theory - Volume Part II
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The SIMPLE (Simple Indoor Multi-level Portable Location Engine) wireless location prototype runs on an IPAQ PDA equipped with an 802.11b wireless LAN interface and provides a handheld location system in conjunction with a number of access points. The system has been particularly developed to work within a museum or heritage scenario that spans multiple locations and may enable metropolitan wide location services. SIMPLE enables a wireless enabled PDA or in the future a cellular phone with WLAN functionality to download a wireless database and map and determine their location based on received signal strength indicator (RSSI) information. A number of techniques have been combined within SIMPLE to enable the PDA to function as an autonomous device with minimal interaction to the service provider infrastructure. This should enable more scalable middleware solutions to be created, where users only interact when requesting delivery of information.