Telecommunications – Transmitter – Measuring – testing – or monitoring of transmitter
Reexamination Certificate
2011-07-05
2011-07-05
Appiah, Charles N (Department: 2617)
Telecommunications
Transmitter
Measuring, testing, or monitoring of transmitter
C455S115200, C455S439000, C370S249000, C370S326000, C370S328000, C370S224000, C370S242000
Reexamination Certificate
active
07974594
ABSTRACT:
The present invention relates to a method for checking connectivity between a BSC (Base Station Controller) and an MSC (Mobile Switching Center), including: the MSC loopbacking a circuit and sending a connectivity check command to the BSC to instruct the BSC to perform the connectivity check; the BSC performing the connectivity check according to the connectivity check command; if the connectivity check is successful, the BSC sends a Connectivity Check Success identifier to the MSC to instruct the MSC to cancel the self-loop of the circuit; if the connectivity check fails, the BSC sends a Clear Request message to the MSC to release the communication connection and cancel the self-loop of the circuit. Embodiments of the present invention implement quick and convenient locating of connection errors by adding a Connectivity Check command in the messages for A-interface.
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Written Opinion of the International Searching Authority mailed Nov. 9, 2006.
Appiah Charles N
Huawei Technologies Co. Ltd.
Peaches Randy
Slater & Matsil L.L.P.
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