Method and apparatus for distinguishing control channel from...

Details Method and apparatus for distinguishing control channel from... Method and apparatus for distinguishing control channel from...

H - Electricity

04

B

H04B 7/00 (2006.01) H04B 7/212 (2006.01) H04L 1/00 (2006.01) H04L 1/20 (2006.01) H04Q 7/22 (2006.01) H04Q 7/38 (2006.01)

Patent

CA 2183401

A discriminating circuit stores a flag designating a received radio signal as belonging to a traffic channel, a control channel, or an unidentified channel. If the flag does not indicate the traffic channel, the discriminating circuit decodes the signal and detects errors on the assumption that the signal belongs to the control channel. The detected errors include convolutional code errors, which are detected by re-encoding the decoded signal, as well as errors in other types of codes. If the flag indicates that the channel is unidentified, a counter is incremented according to the paucity or absence of errors. When the counter reaches a threshold value, the flag is set to indicate the control channel.

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