A Network Architecture for Global Wireless Position Location Services

Major R&D activities are underway following the FCC rulings for the Wireless E-911 service. The goal is to determine the location of an emergency caller accurately, thus enhancing significantly the security of subscribers. Additional new applications include highway navigation and location sensitive billing, among others. Much of the research is focused on attaining a balance between location accuracy on one hand, and the cost on the other. We present an architecture for an efficient and cost effective wireless position location system using Differential GPS with the GPRS of the GSM as the basic wireless infrastructure.