Method, apparatus, and access network system for speech signal processing

A speech signal processing method, comprising:

• receiving by a base station controller, decoding results which are of a first substream, a second substream, and a third substream, and are sent by a base station, wherein the decoding result of the first substream is a decoding result acquired after decoding processing is performed by adopting a decoding algorithm that is based on an auxiliary decision of a cyclic redundancy check (CRC) attached to the first substream, and the decoding result comprises a decoded bit stream corresponding to the first substream and a CRC result based on the CRC attached to the first substream;
• and
• sending by a base station controller, the CRC result to an outer-loop power control module, and sending to a core network the decoded bit stream and the CRC result that are of the first substream, and the decoding results of the second substream and the third substream.

A base station controller, comprising:

• a second receiving module, configured to receive decoding results which are of a first substream, a second substream, and a third substream, and are sent by a base station, wherein the decoding result of the first substream is a decoding result acquired after decoding processing is performed by adopting a decoding algorithm that is based on an auxiliary decision of a cyclic redundancy check (CRC) attached to the first substream, and the decoding result comprises a decoded bit stream corresponding to the first substream and a CRC result based on the CRC;
• and
• a second sending module, configured to send the CRC result to an outer-loop power control module, and send to a core network the decoded bit stream and the CRC result that are of the first substream, and the decoding results of the second substream and the third substream.