Communication method and apparatus

An apparatus, comprising one or more circuits, configured to:

• measure a downlink reference signal received from a network device, to obtain third information of a downlink channel;
• determine first information and first scenario-related information of the downlink channel based on the third information, wherein the first information is determined by a first encoder, the first scenario-related information indicates identification information of at least one scenario corresponding to the downlink channel, and wherein
• an input of the first encoder is based on the third information and the first scenario-related information;
• or
• an input of the first encoder is based on the third information, wherein the first encoder corresponds to the first scenario-related information;
• and
• send the first information and the first scenario-related information to the network device.

A communications method, comprising:

• receiving first information and first scenario-related information of a downlink channel from a terminal device, wherein the first scenario-related information indicates identification information of at least one scenario corresponding to the downlink channel;
• and
• determining, by using a first decoder, second information of the downlink channel based on the first scenario-related information and the first information, wherein
• an input of the first decoder is based on the first information and the first scenario-related information;
• or
• an input of the first decoder is based on the first information, wherein the first decoder corresponds to the first scenario-related information.