| 摘要 |
Techniques to detect for DTX frames in a "primary" transmission that may be sent in a non-continuous manner using a "secondary" transmission that is sen t during periods of no transmission for the primary transmission. The primary and secondary transmissions may be the ones sent on the F-DCCH and Forward Power Control Subchannel, respectively, in an IS-2000 system. In one method, a determination is first made whether or not a frame received for the primary transmission in a particular frame interval is a good frame (e.g., based on CRC). If the received frame is not a good frame, then a determination is nex t made whether the received frame is a DTX frame or an erased frame based on a number of metrics determined for the primary and secondary transmissions. Th e metrics may include symbol error rate of the received frame, secondary transmission (e.g., PC bit) energy, and received frame energy.
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