Algorithm Which Approached in Outdoor position in GSM Technology using
Mathematical Definations :
OBJECTIVES
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Understand the major positioning methods and procedures for use in
positioning mobile terminals in GSM networks
Understand the location procedures involved in positioning the GSM
mobile station and the use of location information for applications
Identify the limitations of each positioning technology and use the
proposed method to calculate the position of the mobile.
Writing the matlab code for the Positioning and understanding the
functionality of the program.
Finally, conclude the proposed method is providing better solution
compared with other methods.
Preface
This report has been written in December 2003 in a four–week project at the IT
University of Copenhagen under the supervision of Mr. John Sørensen, Head of
MMT Studies and Mr. Zoltan safar, Assistant professor.
All the world is brought together with the word Communication. There has been
a rapid change in the world, when the communication started between people
from telephones to the present world with Mobile phones. This Mobile phones
has changed the daily lives. Now the increased demand of Mobile phones had
created,´the FCC requirement of operators of mobile communication need to
locate the mobile callers for emergency assistance. This lead the operators to
examine the cellular positioning techniques. Features of GSM signals relevant to
positioning are analyzed and the results are achieved by the authors positioning
trials (annexure 1).
Acknowledgements
We would like to thank the Board of studies for giving us this opportunity to
prove ourselves in doing this project successfully. We also extend our sincere
thanks to our project supervisor Mr. John Sørensen, Head of MMT Studies and
Mr.Zoltan safar for his valuable Suggestions during the project period. With his
perfect scheduling of tasks, we were able to complete the project successfully in
time.
Review of OUTDOOR POSITIONING METHODS
The positioning method system are the methods which calculate the position of
the mobile station depending on the location whether it is far or near.
We can propose 2 method based on the location
1. self – positioning
2. remote positioning
in self positioning methods the positioning receiver makes its signal
measurements from the sensors which are used to determine its self position
in remote positioning methods the mobile station is the transmitter and the
sensors are the receiver. In this the calculation are make to calculate the
pasotion of the mobile station. It is called remote positioning system because the
mobile station is located remote to the sensors
Positioning methods
We find various techniques to find the position of system. For all this positioning
methods, we require the basic measurements between sensors and the mobile, which will
be helpful to calculate the position of the mobile system given above.The basic
measurements are (propagation time, Time difference of Arrival(TDOA), angle of
arrival(AOA),and Carrier phase). In this positioning techniques it uses various
mathematical algorithms to get the accurate position of the mobile station. The proposed
mathematical algorithm uses large number of sensors, thus making maximum number of
approximations to calculate the mobile positon