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Cellular Tele
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Several years ago, mobile operators are offering a service to locate any – either by the subscriber's prior consent. On his phone came to an SMS message that such a subscriber wants to know where you are are. So, the question – do you agree? You can track your cell phone without your consent. The principle itself is to determine the location of a mobile phone within the cells. A positive aspect of such operations is the ability to locate an emergency caller on the map because of the alarm or if a person calls the emergency services. But, as a violation of privacy. David Fowler has plenty of information regarding this issue. In a GSM network procedure Periodic Location Update (periodic updating of the location), which is run as a result of any event: the incoming or outgoing call, sending or receiving SMS, enable or disable the device, the change in LAC hundred (Location Area Code – local area code), re-enforced in the network during a multiple six minutes.
And, of course, by changing the operator when roaming. To a cell phone gave his location, it is necessary that it has entered into an active connection automatically or forcibly. In standby mode, listening on a cell phone a few neighboring cells, and when the signal level to the next will be more mobile and moves there. Mobile phone chooses range of 900 MHz with a range of VMBO 1800 MHz, even if the difference in signal level it is less than 900 for the value within 12 dB. So there is a transfer from the cell extension in the cell. Operator methods for tracking the mobile phone: Method Cells IDs Method Cells IDs and time compensation method of time of arrival method is the time difference (signal delay) SIM Toolkit WAP Support GPS description of each method will be discussed in future articles More on
