Method for calibrating a testing apparatus
First Claim
1. A method for frequency calibration of a testing apparatus for testing mobile terminals provided for operation in a mobile communication net, including mobile or cellular telephones, comprising:
- a testing apparatus passively listening to an established communication based on a data communication between a mobile terminal and a mobile communication net, the testing apparatus at least partially sampling and evaluating the information signals underlying the communication; and
based on the evaluation, calibrating a reference frequency unit incorporated in the testing apparatus, wherein bit streams are processed as information signals and wherein calibrating the reference frequency unit includes minimizing the frequency error of the bit streams measured by the testing apparatus.
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Abstract
A method for frequency calibration of attesting apparatus for testing or mobile terminals, such as mobile or cellular telephones, provided for operation in a mobile communication net includes testing apparatus that listens to an established communication based on a data communication between the mobile terminal and the mobile telecommunication net. Information signals underlying the communication are at least partially sampled and evaluated by the testing device. Based on this evaluation, a reference frequency unit incorporated in the testing device is calibrated. Preferably, bursts of the mobile terminal establishing the data communication are analyzed by testing apparatus as the information signals.
21 Citations
14 Claims
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1. A method for frequency calibration of a testing apparatus for testing mobile terminals provided for operation in a mobile communication net, including mobile or cellular telephones, comprising:
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a testing apparatus passively listening to an established communication based on a data communication between a mobile terminal and a mobile communication net, the testing apparatus at least partially sampling and evaluating the information signals underlying the communication; and
based on the evaluation, calibrating a reference frequency unit incorporated in the testing apparatus, wherein bit streams are processed as information signals and wherein calibrating the reference frequency unit includes minimizing the frequency error of the bit streams measured by the testing apparatus. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A testing apparatus for testing mobile terminals provided for operation in a mobile communication net, including mobile or cellular telephones, the testing apparatus comprising:
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a reference frequency unit, wherein the testing apparatus passively listens to an established communication based on a data communication between a mobile terminal and a mobile communication net, the testing apparatus at least partially sampling and evaluating the information signals underlying the communication, wherein based on the evaluation, the reference frequency unit is calibrated, wherein bit streams are processed as information signals, and wherein calibrating the reference frequency unit includes minimizing the frequency error of the bits streams measured by the testing apparatus. - View Dependent Claims (13, 14)
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Specification