Codebook determination of HARQ-ACK multiplexing with fallback downlink control information (DCI) and code block group (CBG) configurations
View Patent ↗A user equipment (UE) is described. The UE includes a processor and memory in electronic communication with the processor. Instructions stored in the memory are executable to receive a higher layer signalling to configure the UE with a code block group (CBG). The instructions are also executable to receive one or more downlink (DL) transmissions. Hybrid automatic repeat request acknowledgement (HARQ-ACK) of the one or more DL transmissions are multiplexed and reported in a single uplink (UL) reporting. The instructions are also executable to generate a HARQ-ACK codebook comprises a first HARQ-ACK sub-codebook and a second HARQ-ACK sub-codebook.
1. A user equipment (UE), comprising:
a processor; and
memory in electronic communication with the processor, wherein instructions stored in the memory are executable to:
receive a higher layer signalling to configure the UE with a code block group (CBG);
receive one or more downlink (DL) transmissions, wherein hybrid automatic repeat request acknowledgement (HARQ-ACK) of the one or more DL transmissions are multiplexed and reported in a single uplink (UL) reporting; and
generate a HARQ-ACK codebook comprising a first HARQ-ACK sub-codebook and a second HARQ-ACK sub-codebook, the first HARQ-ACK sub-codebook being for transport block (TB) based DL transmission(s), the second HARQ-ACK sub-codebook being for CBG based DL transmission(s), the HARQ-ACK codebook being generated by appending the second HARQ-ACK sub-codebook to the first HARQ-ACK sub-codebook, wherein
a counter Downlink Assignment Index (DAI) value and a total DAI value apply separately for each of the first HARQ-ACK sub-codebook and the second HARQ-ACK sub-codebook, and
a number of HARQ-ACK bits for each DL transmission in the second HARQ-ACK sub-codebook is based on a maximum value of a product of a number of codeword and a number of CBGs of each TB across serving cells configured with CBG.
2. The UE according to the claim 1 , wherein
in a case that the UE is configured with the CBG and a DL transmission is scheduled by a first downlink control information (DCI) format, HARQ-ACK only for a TB for the DL transmission is generated and the HARQ-ACK only for the TB for the DL transmission is included in the first HARQ-ACK sub-codebook.
3. A base station apparatus comprising:
a processor; and
memory in electronic communication with the processor, wherein instructions stored in the memory are executable to:
transmit a higher layer signalling to configure a user equipment (UE) with a code block group (CBG);
transmit one or more downlink (DL) transmissions, wherein hybrid automatic repeat request acknowledgement (HARQ-ACK) of the one or more DL transmissions are received in a single uplink (UL) reporting, wherein
a HARQ-ACK codebook comprises a first HARQ-ACK sub-codebook and a second HARQ-ACK sub-codebook, the first HARQ-ACK sub-codebook being for transport block (TB) based DL transmission(s), the second HARQ-ACK sub-codebook being for CBG based DL transmission(s), the HARQ-ACK codebook being generated by appending the second HARQ-ACK sub-codebook to the first HARQ-ACK sub-codebook,
a counter Downlink Assignment Index (DAI) value and a total DAI value apply separately for each of the first HARQ-ACK sub-codebook and the second HARQ-ACK sub-codebook, and
a number of HARQ-ACK bits for each DL transmission in the second HARQ-ACK sub-codebook is based on a maximum value of a product of a number of codeword and a number of CBGs of each TB across serving cells configured with CBG.
4. The base station apparatus according to the claim 3 , wherein
in a case that the UE is configured with the CBG and a DL transmission is scheduled by a first downlink control information (DCI) format, HARQ-ACK only for a TB for the DL transmission is generated and the HARQ-ACK only for the TB for the DL transmission is included in the first HARQ-ACK sub-codebook.
5. A method of a user equipment (UE), comprising:
receiving a higher layer signalling to configure the UE with a code block group (CBG);
receiving one or more downlink (DL) transmissions, wherein hybrid automatic repeat request acknowledgement (HARQ-ACK) of the one or more DL transmissions are multiplexed and reported in a single uplink (UL) reporting; and
generating a HARQ-ACK codebook comprising a first HARQ-ACK sub-codebook and a second HARQ-ACK sub-codebook, the first HARQ-ACK sub-codebook being for transport block (TB) based DL transmission(s), the second HARQ-ACK sub-codebook being for CBG based DL transmission(s), the HARQ-ACK codebook being generated by appending the second HARQ-ACK sub-codebook to the first HARQ-ACK sub-codebook, wherein
a counter Downlink Assignment Index (DAI) value and a total DAI value apply separately for each of the first HARQ-ACK sub-codebook and the second HARQ-ACK sub-codebook, and
a number of HARQ-ACK bits for each DL transmission in the second HARQ-ACK sub-codebook is based on a maximum value of a product of a number of codeword and a number of CBGs of each TB across serving cells configured with CBG.
6. The method according to the claim 5 , wherein
in a case that the UE is configured with the CBG and a DL transmission is scheduled by a first downlink control information (DCI) format, HARQ-ACK only for a TB for the DL transmission is generated and the HARQ-ACK only for the TB for the DL transmission is included in the first HARQ-ACK sub-codebook.
7. A method of a base station apparatus comprising:
transmitting a higher layer signalling to configure a user equipment (UE) with a code block group (CBG);
transmitting one or more downlink (DL) transmissions, wherein hybrid automatic repeat request acknowledgement (HARQ-ACK) of the one or more DL transmissions are received in a single uplink (UL) reporting, wherein
a HARQ-ACK codebook comprises a first HARQ-ACK sub-codebook and a second HARQ-ACK sub-codebook, the first HARQ-ACK sub-codebook being for transport block (TB) based DL transmission(s), the second HARQ-ACK sub-codebook being for CBG based DL transmission(s), the HARQ-ACK codebook being generated by appending the second HARQ-ACK sub-codebook to the first HARQ-ACK sub-codebook,
a counter Downlink Assignment Index (DAI) value and a total DAI value apply separately for each of the first HARQ-ACK sub-codebook and the second HARQ-ACK sub-codebook, and
a number of HARQ-ACK bits for each DL transmission in the second HARQ-ACK sub-codebook is based on a maximum value of a product of a number of codeword and a number of CBGs of each TB across serving cells configured with CBG.
8. The method according to the claim 7 , wherein
in a case that the UE is configured with the CBG and a DL transmission is scheduled by a first downlink control information (DCI) format, HARQ-ACK only for a TB for the DL transmission is generated and the HARQ-ACK only for the TB for the DL transmission is included in the first HARQ-ACK sub-codebook.