Communications method and apparatus

A communications method, comprising:

• receiving a first channel on one or more occasions from a network device, wherein the first channel carries first information, and the first information comprises one or more information blocks, wherein each information block corresponds to one terminal device, each information block corresponds to a different terminal device, each information block comprises one first information field set, and the first information field set is used to indicate information about detection performed on a second channel by a terminal device corresponding to an information block in which the first information field set is located;
• and
• if the one or more information blocks are two or more information blocks, types of first information field sets comprised in at least two information blocks in same first information are different;
• and/or if the one or more occasions are two or more occasions, types of first information field sets comprised in information blocks that correspond to a same terminal device and that are in first information carried on first channels sent on at least two different occasions are different;
• and
• determining, based on the first information, the information about detection performed on a second channel by a terminal device.

A communications apparatus, comprising:

• a processing unit, configured to determine one or more occasions on which a first channel is sent;
• and
• a transceiver unit, configured to send, to at least one terminal device, the first channel on the one or more occasions determined by the processing unit, wherein the first channel carries first information, and the first information comprises one or more information blocks, wherein each information block corresponds to one of the at least one terminal device, each information block corresponds to a different terminal device, each information block comprises one first information field set, and the first information field set is used to indicate information about detection performed on a second channel by a terminal device corresponding to an information block in which the first information field set is located;
• and
• if the one or more information blocks are two or more information blocks, types of first information field sets comprised in at least two information blocks in same first information are different;
• and/or if the one or more occasions are two or more occasions, types of first information field sets comprised in information blocks that correspond to a same terminal device and that are in first information carried on first channels sent on at least two different occasions are different.

A communications apparatus, comprising:

• a transceiver unit, configured to receive a first channel on one or more occasions from a network device, wherein the first channel carries first information, and the first information comprises one or more information blocks, wherein each information block corresponds to one terminal device, each information block corresponds to a different terminal device, each information block comprises one first information field set, and the first information field set is used to indicate information about detection performed on a second channel by a terminal device corresponding to an information block in which the first information field set is located;
• and
• if the one or more information blocks are two or more information blocks, types of first information field sets comprised in at least two information blocks in same first information are different;
• and/or if the one or more occasions are two or more occasions, types of first information field sets comprised in information blocks that correspond to a same terminal device and that are in first information carried on first channels sent on at least two different occasions are different;
• and
• a processing unit, configured to determine, based on the first information received by the transceiver unit, the information about detection performed on a second channel by the processing unit.