Joint coding and multiplexing of deferred SPS HARQ-ACK
A user equipment (UE) is described. The UE includes receiving circuitry configured to receive a first radio resource control (RRC) message comprising first information used for configuring a Semi-Persistent Scheduling (SPS) physical downlink shared channel (PDSCH) configuration, to receive a second RRC message comprising second information used for configuring that deferring of SPS hybrid automatic repeat request-acknowledgement (HARQ-ACK) is supported, and to receive, based on a detection of a physical downlink control channel (PDCCH) carrying a downlink control information (DCI) format with cyclic redundancy check (CRC)scrambled by a first radio network identifier (RNTI) for an activation of the SPS PDSCH, the SPS PDSCH transmission. The UE also includes transmitting circuitry configured to transmit HARQ-ACK information based on a decoding of the SPS PDSCH transmission in a first slot/sub-slot and to defer the HARQ-ACK information transmission in a second slot/sub-slot if the first slot/sub-slot is not available.
1 . A user equipment (UE), comprising:
receiving circuitry configured to:
receive a radio resource control (RRC) message on a Semi-Persistent Scheduling (SPS) physical downlink shared channel (PDSCH), the RRC message comprising a configuration for supporting deferral of an SPS hybrid automatic repeat request-acknowledgement (HARQ-ACK); and
generate the SPS HARQ-ACK for the SPS PDSCH; and
transmitting circuitry configured to:
attempt to transmit a physical uplink control channel (PUCCH) carrying the SPS HARQ-ACK data in a first slot/sub-slot;
determine to defer, based on the received configuration, the transmission of the SPS HARQ-ACK data to a second slot/sub-slot in a case that the first slot/sub-slot is not available, wherein the second slot/sub-slot is a next slot/sub-slot with an available SPS PUCCH resource after the first slot/sub-slot;
determine that a PUCCH with a normal HARQ-ACK is to be reported in the second slot/sub-slot;
determine a PUCCH resource based on a total payload of the deferred SPS HARQ-ACK and the normal HARQ-ACK;
multiplex the deferred SPS HARQ-ACK and the normal HARQ-ACK with joint coding on the determined PUCCH resource, wherein the deferred SPS HARQ-ACK and the normal HARQ-ACK are concatenated into a single joint HARQ-ACK codebook for the PUCCH transmission; and
transmit the multiplexed HARQ-ACK on the PUCCH in the second slot/sub-slot.
2 . The UE of claim 1 , wherein the receiving circuitry is further configured to:
determine the joint coding for more than two bits of the total payload of the deferred SPS HARQ-ACK and the normal HARQ-ACK on the PUCCH;
determine the PUCCH resource based on the total payload from sets of PUCCH resources; and
determine a number of physical resource blocks (PRBs) for the PUCCH transmission based on the total payload and a maxCodeRate on the determined PUCCH resource.
3 . A base station (gNB), comprising:
transmitting circuitry configured to:
transmit a radio resource control (RRC) message for a Semi-Persistent Scheduling (SPS) physical downlink shared channel (PDSCH), the RRC message comprising a configuration for supporting deferral of an SPS hybrid automatic repeat request-acknowledgement (HARQ-ACK); and
transmit the SPS PDSCH; and
receiving circuitry configured to:
receive a multiplexed HARQ-ACK on the PUCCH in a second slot/sub-slot,
wherein the PUCCH carrying the multiplexed HARQ-ACK is received from a user equipment, and the user equipment is configured to:
generate the SPS HARQ-ACK for the SPS PDSCH;
attempt to transmit a physical uplink control channel (PUCCH) carrying the SPS HARQ-ACK data in a first slot/sub-slot;
determine to defer, based on the received configuration, the transmission of the SPS HARQ-ACK data to a second slot/sub-slot in a case that the first slot/sub-slot is not available, where the second slot/sub-slot is a next slot/sub-slot with an available SPS PUCCH resource after the first slot/sub-slot;
determine that a PUCCH with a normal HARQ-ACK is to be reported in the second slot/sub-slot;
determine a PUCCH resource based on a total payload of the deferred SPS HARQ-ACK and the normal HARQ-ACK; and
multiplex the deferred SPS HARQ-ACK and the normal HARQ-ACK with joint coding on the determined PUCCH resource, wherein the deferred SPS HARQ-ACK and the normal HARQ-ACK are concatenated into a single joint HARQ-ACK codebook for a PUCCH transmission; and
transmit the multiplexed HARQ-ACK on the PUCCH in the second slot/sub-slot.
4 . The gNB of claim 3 , wherein the user equipment is further configured to:
determine the joint coding for more than two bits of the total payload of the deferred SPS HARQ-ACK and the normal HARQ-ACK on the PUCCH;
determine the PUCCH resource based on the total payload from sets of PUCCH resources; and
determine a number of physical resource blocks (PRBs) for the PUCCH transmission based on the total payload and a maxCodeRate on the determined PUCCH resource.
5 . A method performed by a user equipment (UE), the method comprising:
receiving a radio resource control (RRC) message on a Semi-Persistent Scheduling (SPS) physical downlink shared channel (PDSCH), the RRC message comprising a configuration for supporting deferral of an SPS hybrid automatic repeat request-acknowledgement (HARQ-ACK); and
generating the SPS HARQ-ACK for the SPS PDSCH;
attempting to transmit a physical uplink control channel (PUCCH) carrying the SPS HARQ-ACK data in a first slot/sub-slot;
determining to defer, based on the received configuration, the transmission of the SPS HARQ-ACK data to a second slot/sub-slot in a case that the first slot/sub-slot is not available, where the second slot/sub-slot is a next slot/sub-slot with an available SPS PUCCH resource after the first slot/sub-slot;
determining that a PUCCH with a normal HARQ-ACK is to be reported in the second slot/sub-slot;
determining a PUCCH resource based on a total payload of the deferred SPS HARQ-ACK and the normal HARQ-ACK;
multiplexing the deferred SPS HARQ-ACK and the normal HARQ-ACK with joint coding on the determined PUCCH resource, wherein the deferred SPS HARQ-ACK and the normal HARQ-ACK are concatenated into a single joint HARQ-ACK codebook for a PUCCH transmission; and
transmitting the multiplexed HARQ-ACK on the PUCCH in the second slot/sub-slot.