Channel collision handling with URLLC, and ACK feedback on/off for HARQ-ACK of URLLC PDSCH transmissions
A user equipment (UE) is described. The UE includes a higher layer processor configured to configure physical uplink control channel (PUCCH) resources for HARQ-ACK feedback of ultra-reliable low-latency communication (URLLC) physical downlink shared channel (PDSCH) transmissions. The higher layer processor is also configured to determine if there is a collision between a PUCCH for HARQ-ACK feedback of URLLC PDSCH transmissions and other uplink (UL) channels. The higher layer processor is further configured to determine if simultaneous UL transmissions is supported for URLLC transmissions and other UL channels. The UE also includes transmitting circuitry configured to transmit HARQ-ACK feedback for URLLC PDSCH transmission and other UL channels.
1. A user equipment (UE), comprising:
a processor configured to:
configure physical uplink control channel (PUCCH) repetitions with a higher priority for a Hybrid Automatic Repeat Request Acknowledgement (HARQ-ACK) feedback, the HARQ-ACK feedback being a feedback for a physical downlink shared channel (PDSCH), and
determine if there is a collision between the PUCCH repetitions with the higher priority for the HARQ-ACK feedback and more than one physical uplink channel, including a physical uplink shared channel (PUSCH), with a lower priority that starts earlier than the PUCCH repetitions with the higher priority; and
transmitting circuitry configured to transmit the HARQ-ACK feedback on the PUCCH repetitions with the higher priority, transmit the more than one physical uplink channel with the lower priority in non-overlapping symbols, and drop the more than one physical uplink channel with the lower priority in overlapping symbols, in a case that the collision occurs, wherein
the overlapping symbols are located over a plurality of slots, and
in each of the plurality of slots, a corresponding one of the PUCCH repetitions with the higher priority for the HARQ-ACK feedback is transmitted.
2. A base station device, comprising:
transmitting circuitry configured to transmit a physical downlink shared channel (PDSCH); and
receiving circuitry configured to receive, from a user equipment (UE), physical uplink control channel (PUCCH) repetitions with a higher priority for a Hybrid Automatic Repeat Request Acknowledgement (HARQ-ACK) feedback, the HARQ-ACK feedback being a feedback for the PDSCH, wherein
in a case that there is a collision between the PUCCH repetitions with the higher priority for the HARQ-ACK feedback and more than one physical uplink channel, including a physical uplink shared channel (PUSCH), with a lower priority that starts earlier than the PUCCH repetitions with the higher priority, the receiving circuitry is configured to, in addition to receiving the PUCCH repetitions with the higher priority, receive, from the UE, the more than one physical uplink channel with the lower priority in non-overlapping symbols without receiving the more than one physical uplink channel with the lower priority in overlapping symbols, wherein
the overlapping symbols are located over a plurality of slots, and
in each of the plurality of slots, a corresponding one of the PUCCH repetitions with the higher priority for the HARQ-ACK feedback is received.
3. A method performed by a user equipment (UE), comprising:
configuring physical uplink control channel (PUCCH) repetitions with a higher priority for a Hybrid Automatic Repeat Request Acknowledgement (HARQ-ACK) feedback, the HARQ-ACK feedback being a feedback for a physical downlink shared channel (PDSCH);
determining if there is a collision between the PUCCH repetitions with the higher priority for the HARQ-ACK feedback and more than one physical uplink channel, including a physical uplink shared channel (PUSCH), with a lower priority that starts earlier than the PUCCH repetitions with the higher priority, wherein
in a case that the collision occurs, the method further comprises:
transmitting the HARQ-ACK feedback on the PUCCH repetitions with the higher priority;
transmitting the more than one physical uplink channel with the lower priority in non-overlapping symbols; and
dropping the more than one physical uplink channel with the lower priority in overlapping symbols, wherein
the overlapping symbols being located over a plurality of slots, and
in each of the plurality of slots, a corresponding one of the PUCCH repetitions with the higher priority for the HARQ-ACK feedback is transmitted.
4. A method performed by a base station device, comprising:
transmitting a physical downlink shared channel (PDSCH); and
receiving, from a user equipment (UE), physical uplink control channel (PUCCH) repetitions with a higher priority for a Hybrid Automatic Repeat Request Acknowledgement (HARQ-ACK) feedback, the HARQ-ACK feedback being a feedback for the PDSCH, wherein
in a case that there is a collision between the PUCCH repetitions with the higher priority for the HARQ-ACK feedback and more than one physical uplink channel, including a physical uplink shared channel (PUSCH), with a lower priority that starts earlier than the PUCCH repetitions with the higher priority, the method further comprises:
in addition to receiving the PUCCH repetitions with the higher priority, receiving, from the UE, the more than one physical uplink channel with the lower priority in non-overlapping symbols without receiving the more than one physical uplink channel with the lower priority in overlapping symbols, wherein
the overlapping symbols are located over a plurality of slots, and
in each of the plurality of slots, a corresponding one of the PUCCH repetitions with the higher priority for the HARQ-ACK feedback is received.