Hybrid automatic repeat request(HARQ) feedback configuration method and device and data receiving apparatus

A method for determining data to be retransmitted, implemented by a data sender, the method comprising:

• receiving Hybrid Automatic Repeat reQuest (HARQ) codebook switching information from a data receiver;
• and
• storing the HARQ codebook switching information to process, according to the HARQ codebook switching information, a HARQ codebook fed back by the data receiver to determine resource unit information of data to be retransmitted,
• wherein the HARQ codebook switching information is configured according to carrier aggregation information, and the carrier aggregation information comprises at least one of following parameters:
• a type of a service born in aggregated Component Carriers (CCs);
• a traffic volume of the service born in the aggregated CCs;
• or
• a manner of transmission of the service born in the aggregated CCs,
• wherein the HARQ codebook switching information is information about switching between a first HARQ codebook format and a second HARQ codebook format,
• where the first HARQ codebook format is determined by a maximum number of resource units in one of the aggregated CCs and a total number of times for which data is required to be transmitted by the aggregated CCs, and
• the second HARQ codebook format is determined by the number of resource units in a CC in each CC group in the aggregated CCs and a total number of times for which data is required to be transmitted by a corresponding CC group, and CCs comprising a same number of resource units in the aggregated CCs are divided into a group.

A data receiving apparatus, comprising:

• a processor;
• and
• a memory device configured to store instructions executable by the processor,
• wherein the processor is configured to:
• configure HARQ codebook switching information for a data sender according to carrier aggregation information;
• and
• send the HARQ codebook switching information configured by the configuration portion to the data sender,
• wherein the carrier aggregation information comprises at least one of following parameters:
• a type of a service born in aggregated Component Carriers (CCs);
• a traffic volume of the service born in the aggregated CCs;
• or
• a manner of transmission of the service born in the aggregated CCs,
• wherein the HARQ codebook switching information is information about switching between a first HARQ codebook format and a second HARQ codebook format,
• where the first HARQ codebook format is determined by a maximum number of resource units in one of the aggregated CCs and a total number of times for which data is required to be transmitted by the aggregated CCs, and
• the second HARQ codebook format is determined by the number of resource units in a CC in each CC group in the aggregated CCs and a total number of times for which data is required to be transmitted by a corresponding CC group, and CCs comprising a same number of resource units in the aggregated CCs are divided into a group.

A data sending apparatus, comprising:

• a processor;
• and
• a memory configured to store instructions executable by the processor,
• wherein the processor is configured to:
• receive a Hybrid Automatic Repeat reQuest (HARQ) codebook switching information from a data receiver;
• and
• store the HARQ codebook switching information to process, according to the HARQ codebook switching information, a HARQ codebook fed back by the data receiver to determine resource unit information of data to be retransmitted,
• wherein the HARQ codebook switching information is configured according to carrier aggregation information, and the carrier aggregation information comprises at least one of following parameters:
• a type of a service born in aggregated Component Carriers (CCs);
• a traffic volume of the service born in the aggregated CCs;
• or
• a manner of transmission of the service born in the aggregated CCs,
• wherein the HARQ codebook switching information is information about switching between a first HARQ codebook format and a second HARQ codebook format,
• where the first HARQ codebook format is determined by a maximum number of resource units in one of the aggregated CCs and a total number of times for which data is required to be transmitted by the aggregated CCs, and
• the second HARQ codebook format is determined by the number of resource units in a CC in each CC group in the aggregated CCs and a total number of times for which data is required to be transmitted by a corresponding CC group, and CCs comprising a same number of resource units in the aggregated CCs are divided into a group.