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1 Types

LBS are Localization Based Systems. One can find several types:

• Cell ID The precision of this method is 200 meters in urban areas, 2 km in suburban areas and 3-4 km in rural zones.

• Enhanced Cell ID With this method one can get a precision similar to Cell ID, but for rural areas, with circular sectors of 550 meters.

• TOA: Time Of Arrival

• AOA: Angle Of Arrival

• E-OTD: This is similar to TOA, but the position is estimated by the mobile phone, not by the base station. The precision of this method depends on the number of availables LMUs in the networks, varing from 50 to 200 m.

2 See also

• Global Positioning System.
• Internationalisation : usability, product design, user interface and cultural data collection

3 External links

• http://www.incotel.es/
• http://www.gisdevelopment.net/technology/lbs/techlbs006.htm
• http://www.localisation.ie/
• GSM Tutorial