| 主权项 |
1. A network node of a wireless communication network, the network node comprising:
a receiver arranged to receive an input signal from a remote transmitter of the wireless communication system via a wireless transmission channel; a signal to noise ratio calculator arranged to calculate a signal to noise ratio of the input signal; a soft bit normalizer arranged to determine a plurality of normalized soft bits using the input signal; and a discontinuous transmission (DTX) detector, connected with respective inputs to the signal to noise ratio calculator and the soft bit normalizer, the DTX detector being arranged to decide whether the input signal indicates that the signal transmission is in a DTX or in a non-DTX mode, and comprising:
a primary detector connected with respective inputs to the signal to noise ratio calculator and the soft bit normalizer and arranged to detect a discontinuous transmission on the transmission channel using the plurality of the normalized soft bits and the signal to noise ratio, and an output for outputting, if a discontinuous transmission, DTX, on the transmission channel is detected, a signal indicating a DTX-detected decision, or else output a trigger signal; anda refinement detector, connected with a respective input to the output of the primary detector to receive the trigger from the primary detector, and arranged to decode the normalized soft bits and to generate a further decision about whether the signal indicates a discontinuous transmission on the transmission channel using the decoded normalized soft bits. |
