Communication method, terminal device and network device

A terminal device, comprising:

• a processor and a receiver, wherein,
• the receiver is configured to receive association relationships between a plurality of control channels configured by a network device, wherein the association relationships between the plurality of control channels are configured to indicate that the plurality of control channels schedule a same data channel;
• the processor is configured to determine a first control channel from the plurality of control channels scheduling the same data channel;
• the processor is configured to determine, based on the first control channel, a physical uplink control channel (PUCCH) resource that carries a hybrid automatic repeat request (HARQ) feedback information of the data channel,
• wherein the first control channel is a control channel of the plurality of control channels and designated from all control channels associated with a smallest identifier of all identifiers associated with the plurality of control channels,
• wherein types of identifiers associated with the plurality of control channels comprise at least one of:
• a control resource set (CORESET) ID and a search space ID,
• wherein the receiver is further configured to:
• receive a first resource indication message sent by the network device when the network device schedules the data channel through the plurality of control channels, wherein the first resource indication message comprises:
• a time slot offset of data, which is indicated in the first control channel, to the PUCCH resource, and a resource indication of the PUCCH;
• wherein the processor is further configured to:
• determine a feedback time slot of the PUCCH based on the resource of the data channel and the time slot offset of data, which is indicated in the first control channel, to the PUCCH resource;
• and
• determine a PUCCH resource based on the resource indication of the PUCCH and the feedback time slot of the PUCCH,
• wherein the first control channel is k-th control channel in an ordering result, the ordering result is obtained by placing candidate control channels based on detection time points of the candidate control channels, and k is an integer greater than or equal to 1;
• and the candidate control channels are all control channels, which are associated with a first identifier and are part of the plurality of control channels, wherein the first identifier is the smallest identifier of all identifiers associated with the plurality of control channels.

A network device, comprising a processor and a transmitter, wherein the processor is configured to:

• configure association relationships between a plurality of control channels to a terminal device, wherein the association relationships between the plurality of control channels are configured to indicate that the plurality of control channels schedule a same data channel;
• determine one first control channel from the plurality of control channels, and
• determine, based on the first control channel, a PUCCH resource carrying HARQ feedback information of the data channel,
• wherein the first control channel is a control channel of the plurality of control channels and designated from all control channels associated with a smallest identifier of all identifiers associated with the plurality of control channels,
• wherein types of identifiers associated with the plurality of control channels comprise at least one of:
• a control resource set (CORESET) ID and a search space ID,
• wherein the transmitter is further configured to send a first resource indication message to the terminal device when network device is scheduling the data channel through the plurality of control channels, and the first resource indication message comprises:
• a time slot offset of data, which is indicated in the first control channel, to the PUCCH resource, and a resource indication of the PUCCH, wherein the time slot offset of data, which is indicated in the first control channel, to the PUCCH resource and a resource of the data channel are used for the terminal device to determine a feedback time slot of the PUCCH, and the feedback time slot of the PUCCH and the resource indication of the PUCCH are used for the terminal device to determine a PUCCH resource,
• wherein the first control channel is k-th control channel in an ordering result, the ordering result is obtained by placing candidate control channels based on detection time points of the candidate control channels, and k is an integer greater than or equal to 1;
• and the candidate control channels are all control channels, which are associated with a first identifier and are part of the plurality of control channels, wherein the first identifier is the smallest identifier of all identifiers associated with the plurality of control channels.