Method and apparatus for detecting movement of an object and measuring tolerable distance

A method for measuring a tolerable distance, said object is disposed in a communication system and having a receiver and a memory device, said memory device stores a predetermined tolerable distance, said communication system having N base stations for transmitting signals, said method comprising the steps of:

• (A) during a predetermined period, respectively receiving and measuring signals broadcasted from each base station to derive a first average value and a standard value;
• (B) on M points on a circumference of a circle with said object as the center of the circle and said predetermined tolerable distance as the radius of the circle, respectively receiving and measuring signals broadcasted from each base station to derive a third average value;
• (C) comparing a difference between said first average value and said third average value with said standard value;
• and
• (D) calculating said tolerable distance in accordance with said predetermined tolerable distance and a result from step (C).

An apparatus for determining whether an object is moved, wherein said object being disposed in a communication system, said communication system having N base stations for transmitting signals, said apparatus comprising:

• a receiver;
• and
• a controller;
• whereby, when a tolerable probability is inputted, during a predetermined period, said receiver respectively receives signals broadcasted from each base station and said controller measures said signals to derive a first average value;
• said controller calculates a tolerable range in accordance with said tolerable probability and said first average value;
• during a unit period, said receiver respectively receives signals broadcasted from each base station and said controller measures said signals to derive a second average value;
• said controller compares said second average value and said tolerable range.

An apparatus for measuring a tolerable distance, said object is disposed in a communication system, said communication system having N base stations for transmitting signals, said apparatus comprising:

• a receiver;
• a controller;
• and
• a memory device for storing a predetermined tolerable distance;
• whereby, during a predetermined period, said receiver respectively received signals broadcasted from each base station and said controller measures said signals to derive a first average value and a standard value;
• on M points on a circumference of a circle with said object as the center of the circle and said predetermined tolerable distance as the radius of the circle, said receiver respectively receives signals broadcasted from each base station and said controller measures said signals to derive a third average value;
• said controller compares a difference between said first average value and said third average value with said standard value;
• said controller calculates said tolerable distance in accordance with said predetermined tolerable distance and the compared result.