HARQ codebook construction with feedback enabling/disabling per HARQ process
Systems and methods are disclosed for dynamic Hybrid Automatic Repeat Request (HARQ) codebook construction with enabling or disabling of HARQ Acknowledgment (HARQ-ACK) feedback per HARQ process. In one embodiment, a method performed by a wireless communication device comprises receiving, from a network node, information that configures the wireless communication device with a first set of HARQ processes for which HARQ-ACK feedback is disabled and a second set of HARQ processes for which HARQ-ACK feedback is enabled. The method further comprises receiving first downlink control information that schedules a first downlink shared channel transmission and determining that the transmission corresponds to one of the first set of HARQ processes for which HARQ-ACK feedback is disabled. The method further comprises, upon making this determination, performing a first set of actions for HARQ-ACK feedback generation for HARQ processes with HARQ-ACK feedback disabled.
1. A method performed by a wireless communication device for dynamic codebook based Hybrid Automatic Repeat Request Acknowledgement, HARQ-ACK, feedback, the method comprising:
receiving, from a network node, information that configures the wireless communication device with a first set of HARQ processes for which HARQ-ACK feedback is disabled and a second set of HARQ processes for which HARQ-ACK feedback is enabled;
receiving first downlink control information that schedules a first downlink shared channel transmission to the wireless communication device;
determining that the first downlink shared channel transmission corresponds to one of the first set of HARQ processes for which HARQ-ACK feedback is disabled; and
upon determining that the first downlink shared channel transmission corresponds to one of the first set of HARQ processes for which HARQ-ACK feedback is disabled, performing a first set of actions for HARQ-ACK feedback generation for HARQ processes with HARQ-ACK feedback disabled.
2. The method of claim 1 wherein receiving the information that configures the wireless communication device with the first set of HARQ processes for which HARQ-ACK feedback is disabled and the second set of HARQ processes for which HARQ-ACK feedback is enabled comprises receiving the information via Radio Resource Control, RRC, signaling.
3. The method of claim 1 wherein the first set of actions is different than a second set of actions for HARQ-ACK feedback generation for HARQ processes with HARQ-ACK feedback enabled.
4. The method of claim 1 wherein the first set of actions comprises one or more of the following actions:
determining that a counter Downlink Assignment Indicator, DAI, comprised in the first downlink control information is not incremented for the first downlink shared channel transmission;
determining that a total DAI comprised in the first downlink control information is not incremented for the first downlink shared channel transmission;
ignoring the counter DAI and the total DAI comprised in the first downlink control information; and
refraining from generating HARQ-ACK feedback for the first downlink shared channel transmission such that a size of a dynamic codebook comprising HARQ-ACK feedback is not impacted by the first downlink shared channel transmission.
5. The method of claim 1 further comprising:
receiving second downlink control information that schedules a second downlink shared channel transmission to the wireless communication device;
determining that the second downlink shared channel transmission corresponds to one of the second set of HARQ processes for which HARQ-ACK feedback is enabled; and
upon determining that the second downlink shared channel transmission corresponds to one of the second set of HARQ processes for which HARQ-ACK feedback is enabled, performing a second set of actions for HARQ-ACK feedback generation for HARQ processes with HARQ-ACK feedback enabled, wherein the second set of actions is different than the first set of actions.
6. The method of claim 5 wherein the second set of actions comprises one or more of the following actions:
determining that a counter DAI comprised in the second downlink control information is incremented for the second downlink shared channel transmission;
determining that a total DAI comprised in the second downlink control information is incremented for the second downlink shared channel transmission; and
generating HARQ-ACK feedback for the second downlink shared channel transmission.
7. The method of claim 5 further comprising:
sending HARQ-ACK feedback to a network node, the HARQ-ACK feedback comprising HARQ-ACK feedback for the second downlink shared channel transmission.
8. The method of claim 7 wherein sending the HARQ-ACK feedback to the network node comprises:
generating a HARQ-ACK codebook comprising HARQ-ACK feedback for a plurality of physical downlink shared channel transmissions, the HARQ-ACK codebook comprising HARQ-ACK feedback for the second downlink shared channel transmission;
determining a physical uplink control channel resource for sending the HARQ-ACK codebook based on a physical uplink control channel resource indicator in a last downlink control information received and decoded for a physical downlink shared channel transmission for which HARQ-ACK feedback is comprised in the HARQ-ACK codebook; and
sending the HARQ-ACK codebook to a network node on the determined physical uplink control channel resource.
9. The method of claim 8 wherein the HARQ-ACK codebook is a dynamic codebook.
10. A wireless communication device for dynamic codebook based Hybrid Automatic Repeat Request Acknowledgement, HARQ-ACK, feedback, the wireless communication device adapted to:
receive, from a network node, information that configures the wireless communication device with a first set of HARQ processes for which HARQ-ACK feedback is disabled and a second set of HARQ processes for which HARQ-ACK feedback is enabled;
receive first downlink control information that schedules a first downlink shared channel transmission to the wireless communication device;
determine that the first downlink shared channel transmission corresponds to one of the first set of HARQ processes for which HARQ-ACK feedback is disabled; and
upon determining that the first downlink shared channel transmission corresponds to one of the first set of HARQ processes for which HARQ-ACK feedback is disabled, perform a first set of actions for HARQ-ACK feedback generation for HARQ processes with HARQ-ACK feedback disabled.
11. A wireless communication device for dynamic codebook based Hybrid Automatic Repeat Request Acknowledgement, HARQ-ACK, feedback, the wireless communication device comprising:
one or more transmitters;
one or more receivers; and
processing circuitry associated with the one or more transmitters and the one or more receivers, the processing circuitry configured to cause the wireless communication device to:
receive, from a network node, information that configures the wireless communication device with a first set of HARQ processes for which HARQ-ACK feedback is disabled and a second set of HARQ processes for which HARQ-ACK feedback is enabled;
receive first downlink control information that schedules a first downlink shared channel transmission to the wireless communication device;
determine that the first downlink shared channel transmission corresponds to one of the first set of HARQ processes for which HARQ-ACK feedback is disabled; and
upon determining that the first downlink shared channel transmission corresponds to one of the first set of HARQ processes for which HARQ-ACK feedback is disabled, perform a first set of actions for HARQ-ACK feedback generation for HARQ processes with HARQ-ACK feedback disabled.