E-OTD


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E-OTD

(Enhanced Observed Time Difference) See mobile positioning.
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Inside the Method country suburban city buildings Cell ID 1-35km 1-10km 50m-lkm 50m-lkm Cell ID +TA 1-35km 1-10km 50m-lkm 50m-lkm U-TDOA OTDOA 80m 50m 50m 50m E-OTD 50-150m 50-150m 50-150m 50-150m A-GPS 30m 40m 30-150m 200m
These include uplink time of arrival (TOA) and network-assisted GPS in the handset, along with E-OTD.
Cambridge Positioning Systems, the location experts, announced today that the company has developed its E-OTD technology for third-generation (3G) networks, and is demonstrating good results from laboratory trials.
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.
Intel is working with CPS to integrate E-OTD technology into a range of mobile devices running Intel(R) Personal Internet Client Architecture (Intel PCA) building blocks.
Cambridge Positioning Systems Ltd (CPS), which has developed E-OTD as the standardised GSM location solution, welcomed the filing which follows major network deployments involving network equipment and handset vendors in several US states.
CPS' Cursor(TM), based on E-OTD (Enhanced Observed Time Difference) technology, enables fast, cost-effective deployment and can achieve location accuracies to 100 metres, even in dense urban areas.
As part of the cooperation, CPS will also provide E-OTD software integration for Siemens handsets via its recently opened integration facility in Cambridge.
The methods provide an investment-secured evolutionary path to E-OTD and A-GPS (assisted global positioning system) covering GSM, 3G (WCDMA/EDGE) and ALL-IP RAN networks.
5/3G networks - GMLC support in accordance with the GSM Location Services Standard, interworking with CellPoint SMLC or network integrated SMLCs supporting other location technologies such as E-OTD or TDOA - Client-Assisted Positioning, which provides the facility for operators to utilise existing SIM gateways or SCPs as Location Providers combined with the CellPoint Location System core as the first step to introduce location services on existing applications and in a most efficient manner - Centralised SMLC support supporting CGI, NMR and TA, which allows for very efficient implementation and limits the need for costly infrastructure upgrades in the respective networks.
Nokia and Radiolinja, the Finnish mobile operator, have demonstrated good results in field trials using Nokia's enhanced observed time difference (E-OTD) positioning technology in Radiolinja's GSM900/1800 network - a breakthrough for E-OTD technology.