Estimated accuracy of location in mobile networks using E-OTD
Master thesis
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http://hdl.handle.net/11250/137308Utgivelsesdato
2002Metadata
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Sammendrag
This master thesis was performed for Telenor Research and Development, department
Fornebu, Norway. The assignment was to evaluate the accuracy of the Enhanced Observed
Time Difference (E-OTD) location method.
Location related services are described as the next revolution on services and functionality in
the mobile network. Location technology will help the operator to estimate the location of a
mobile station in the network. But different location services require different accuracy of the
location estimate. It is therefore important to find out what location method(s) is suitable for
the operators needs.
This report will give an overview of the most important location technologies for the GSM
network on the market today and examples of the most common location services. It will
also describe the network architecture needed to implement the E-OTD method.
The main subject of the report is evaluation of the E-OTD location method. The basics and
the calculation methods are described in detail. A simulation model for the E-OTD method
was also created during the work of this master thesis. This model and the results of the
simulation runs are explained and shown.
The E-OTD method requires network update in the form of Location Measurement Units
(LMUs) to compensate for the GSM network not being synchronised. These units will
provide the operator with upgrade costs. It was therefore evaluated the requirements for
LMUs in the work of this master thesis, and the results is shown and discussed in this report.
Beskrivelse
Masteroppgave i informasjons- og kommunikasjonsteknologi 2002 - Høgskolen i Agder, Grimstad
Utgiver
Høgskolen i AgderAgder University College