Uplink control information transmission on autonomous uplink in new radio-unlicensed (NR-U)
Wireless communications systems and methods related to communicating uplink control information (UCI) in a network operating over multiple aggregated unlicensed carriers are provided. A first wireless communication device communicates, with a second wireless communication device, a downlink communication signal. The first wireless communication device communicates, with the second wireless communication device, an unscheduled uplink communication signal including an uplink report associated with the downlink communication signal, the unscheduled uplink communication signal communicated based on a listen-before-talk (LBT) procedure. The uplink report includes at least one of an acknowledgement (ACK) for data in the downlink communication signal, a negative-acknowledgement (NACK) for the data in the downlink communication signal, or channel information based at least on the downlink communication signal.
1. A method of wireless communication, comprising:
communicating, by a first wireless communication device with a second wireless communication device, a downlink communication signal; and
communicating, by the first wireless communication device with the second wireless communication device, an unscheduled uplink communication signal using a resource allocated for an unscheduled uplink data transmission and including an uplink report associated with the downlink communication signal, the unscheduled uplink communication signal communicated based on a listen-before-talk (LBT) procedure, wherein the unscheduled uplink communication signal further includes a transmission configuration used for communicating the unscheduled uplink communication signal, the transmission configuration including at least one of a starting symbol index for the uplink report or an indication of an inclusion of the uplink report in the unscheduled uplink communication signal; and
rate-matching, by the first wireless communication device, the uplink report based on a frequency tone mapping of the transmission configuration.
2. The method of claim 1 , wherein the uplink report includes at least one of an acknowledgement (ACK) for data in the downlink communication signal, a negative-acknowledgement (NACK) for the data in the downlink communication signal, or channel information based at least on the downlink communication signal.
3. The method of claim 1 , wherein the unscheduled uplink communication signal includes a transport block including the uplink report.
4. The method of claim 3 , further comprising:
communicating, by the first wireless communication device with the second wireless communication device, an acknowledgement/negative-acknowledgement (ACK/NACK) for the transport block including the uplink report based on a hybrid automated repeat request (HARQ) process.
5. The method of claim 1 , wherein the unscheduled uplink communication signal further includes uplink data multiplexed with the uplink report.
6. The method of claim 1 , wherein the uplink report is communicated further based on a predetermined periodicity.
7. The method of claim 1 , further comprising:
communicating, by the first wireless communication device with the second wireless communication device, an uplink report request in a first frequency band,
wherein the communicating the unscheduled uplink communication signal includes communicating, by the first wireless communication device with the second wireless communication device, the uplink report in the unscheduled uplink communication signal further based on the uplink report request, the unscheduled uplink communication signal communicated in a second frequency band different from the first frequency band.
8. The method of claim 1 , further comprising:
communicating, by the first wireless communication device with the second wireless communication device, an uplink report request in a frequency band,
wherein the communicating the unscheduled uplink communication signal includes communicating, by the first wireless communication device with the second wireless communication device, the uplink report in the unscheduled uplink communication signal further based on the uplink report request, the unscheduled uplink communication signal communicated in the frequency band.
9. The method of claim 1 , wherein the communicating the downlink communication signal includes communicating, by the first wireless communication device with the second wireless communication device, the downlink communication signal in a first frequency band, and wherein the communicating the unscheduled uplink communication signal includes communicating, by the first wireless communication device with the second wireless communication device, the unscheduled uplink communication signal in a second frequency band different from the first frequency band.
10. The method of claim 1 , wherein the communicating the downlink communication signal includes communicating, by the first wireless communication device with the second wireless communication device, the downlink communication signal in a frequency band, and wherein the communicating the unscheduled uplink communication signal includes communicating, by the first wireless communication device with the second wireless communication device, the unscheduled uplink communication signal in the frequency band.
11. An apparatus comprising:
a transceiver configured to:
communicate, with a second wireless communication device, a downlink communication signal; and
communicate, with the second wireless communication device, an unscheduled uplink communication signal using a resource allocated for an unscheduled uplink data transmission and including an uplink report associated with the downlink communication signal, the unscheduled uplink communication signal communicated based on a listen-before-talk (LBT) procedure, wherein the unscheduled uplink communication signal further includes a transmission configuration used for communicating the unscheduled uplink communication signal, the transmission configuration including at least one of a starting symbol index for the uplink report or an indication of an inclusion of the uplink report in the unscheduled uplink communication signal; and
rate-match the uplink report based on a frequency tone mapping of the transmission configuration.
12. The apparatus of claim 11 , wherein the uplink report includes at least one of an acknowledgement (ACK) for data in the downlink communication signal, a negative-acknowledgement (NACK) for the data in the downlink communication signal, or channel information based at least on the downlink communication signal.
13. The apparatus of claim 11 , wherein the unscheduled uplink communication signal includes a transport block including the uplink report.
14. The apparatus of claim 13 , wherein the transceiver is further configured to:
communicate, with the second wireless communication device, an acknowledgement/negative-acknowledgement (ACK/NACK) for the transport block including the uplink report based on a hybrid automated repeat request (HARQ) process.
15. The apparatus of claim 11 , wherein the unscheduled uplink communication signal further includes uplink data multiplexed with the uplink report.
16. The apparatus of claim 11 , wherein the uplink report is communicated further based on a predetermined periodicity.
17. A non-transitory computer-readable medium having program code recorded thereon, the program code comprising:
code for causing a first wireless communication device to communicate, with a second wireless communication device, a downlink communication signal; and
code for causing the first wireless communication device to communicate, with the second wireless communication device, an unscheduled uplink communication signal using a resource allocated for an unscheduled uplink data transmission and including an uplink report associated with the downlink communication signal, the unscheduled uplink communication signal communicated based on a listen-before-talk (LBT) procedure, wherein the unscheduled uplink communication signal further includes a transmission configuration used for communicating the unscheduled uplink communication signal, the transmission configuration including at least one of a starting symbol index for the uplink report or an indication of an inclusion of the uplink report in the unscheduled uplink communication signal; and
code for causing the first wireless device to rate-match the uplink report based on a frequency tone mapping of the transmission configuration.
18. The non-transitory computer-readable medium of claim 17 , wherein the uplink report includes at least one of an acknowledgement (ACK) for data in the downlink communication signal, a negative-acknowledgement (NACK) for the data in the downlink communication signal, or channel information based at least on the downlink communication signal.
19. The non-transitory computer-readable medium of claim 17 , wherein the unscheduled uplink communication signal includes a transport block including the uplink report.
20. The non-transitory computer-readable medium of claim 19 , further comprising:
code for causing the first wireless communication device to communicate, with the second wireless communication device, an acknowledgement/negative-acknowledgement (ACK/NACK) for the transport block including the uplink report based on a hybrid automated repeat request (HARQ) process.
21. The non-transitory computer-readable medium of claim 17 , wherein the unscheduled uplink communication signal further includes uplink data multiplexed with the uplink report.
22. The non-transitory computer-readable medium of claim 17 , wherein the uplink report is communicated further based on a predetermined periodicity.