Cambridge Positioning Systems, a provider of mobile location technology systems, has announced that its E-OTD (Enhanced Observed Time Difference) has now been selected by all major US GSM mobile operators as their technology of choice for compliance with the impending US emergency services legislation, known as E911.
VoiceStream was the first US GSM operator to opt for CPS’ E-OTD technology, and the companies have been working closely together for over a year at a trial network site in Houston, Texas. A second reference network is being commissioned in Washington DC.
AT&T Wireless Services also selected E-OTD as their preferred location technology and has announced implementation plans across its entire GSM network.
This month’s submission to the FCC by Cingular, another leading US GSM operator, announcing that they will also include E-OTD technology in their networks to meet the conditions of E911, means that the technology has now been embraced industry-wide by all major GSM operators announcing their intention to meet the FCC’s mandate.
E-OTD technology can achieve location accuracies to 50 metres. Leading handset providers have announced that GSM handsets produced after Q4 2001 will be E-OTD compatible.
CPS is working with, or has licensed its E-OTD technology to, most of the network infrastructure providers, including Ericsson, Lucent Technologies, Nortel Networks and Siemens.