Exploring GSM Signal Strength Levels in Pervasive EnvironmentsIan Anderson, Henk Muller, Exploring GSM Signal Strength Levels in Pervasive Environments. 1st IEEE International Workshop on Pervasive Computing and Ad Hoc Communications (IEEE PCAC06). April 2006. PDF, 260 Kbytes. External information
In this paper we study the use of GSM signal strength information as a method of inferring position. Location fingerprinting using 802.11 wireless networks is a popular positioning technique. Recently, research has been published that has applied this technique to cellular networks. Cellular networks offer wider coverage than 802.11 and enable context-aware applications to be built upon the already ubiquitous cell-phone platform.
We focus on the practical aspects of deploying and managing location based services in dynamic, outdoor environments. We have extended a technique for creating a qualitative location system. This extension allows a symbolic location system to be learnt from training data in an unsupervised manner.