Automatic generation of signal strength map for location determination of mobile devices

A network system comprising:

• a wireless data communication network (102) having at least a first, a second and a third access point (104, 106, 107),
• a mobile device (100) being adapted to determine its position by means of at least a first, a second and a third reference point (150, 152, 154) on the basis of a trigonometric technique and being further adapted to measure at least a first, a second and a third signal being wirelessly transmitted by the at least first, second and third access points,
• a database (108) being adapted to store the location of the mobile device with the strength of the at least first, second and third signals.

A computer program product for generating a database (108) for a wireless data communication network (102) having at least a first, a second and a third access point (104, 106, 107), the computer program product comprising:

• program means for performing a trigonometric calculation procedure for determining a position of a mobile device by means of at least a first, a second and a third reference point (150, 152, 154),
• program means for assigning the position of the mobile device with at least a first, a second and a third signal being transmitted by the at least first, second and third access points (104, 106, 107) and being measured by the mobile device,
• program means for storing of the assignment between the at least first, second and third signals and the position of the mobile device as an entry of the database.