Multiplexing code block group level and transport block level feedback
Methods, systems, and devices for multiplexing code block group (CBG) level and transport block (TB) level feedback are described. An example method includes receiving a set of TBs, generating a bit sequence providing CBG-level feedback on a first subset of the TBs and TB-level feedback on at least a second subset of the TBs, and transmitting the bit sequence. Another example method includes transmitting a set of TBs, receiving a bit sequence providing CBG-level feedback on a first subset of the TBs and TB-level feedback on at least a second subset of the TBs, and retransmitting at least one CBG for each TB in the first subset of TBs and the second subset of TBs based at least in part on the bit sequence.
1. A method for wireless communication, comprising:
receiving control information indicating a configuration to provide code block group (CBG)-level hybrid automatic repeat request (HARQ) acknowledgment feedback for a plurality of HARQ identifiers (IDs);
receiving a plurality of transport blocks (TBs), each TB of the plurality of TBs associated with a respective one of the plurality of HARQ IDs and comprising one or more CBGs;
generating, based at least in part on the control information, a bit sequence providing CBG-level HARQ acknowledgment feedback for the plurality of HARQ IDs, wherein the bit sequence comprises a respective HARQ acknowledgment feedback bit for each of the CBGs of each TB for the plurality of HARQ IDs; and
transmitting the bit sequence.
2. The method of claim 1 , wherein transmitting the bit sequence comprises:
transmitting the bit sequence in a single subframe.
3. The method of claim 2 , further comprising:
performing a listen-before-talk procedure associated with an unlicensed radio frequency spectrum band, wherein transmitting the bit sequence comprises transmitting the bit sequence in the single subframe using resources of the unlicensed radio frequency spectrum band based at least in part on performing the listen-before-talk procedure.
4. The method of claim 1 , further comprising:
establishing a connection with a base station, wherein receiving the control information comprises receiving the control information from the base station based at least in part on establishing the connection; and
selecting a physical uplink control channel for transmission of the bit sequence based at least in part on establishing the connection.
5. The method of claim 4 , wherein receiving the control information comprises:
receiving a radio resource control configuration comprising the control information as part of establishing the connection with the base station.
6. The method of claim 1 , wherein receiving the control information comprises:
receiving a dynamic feedback configuration that is associated with the plurality of HARQ IDs.
7. A method for wireless communication, comprising:
transmitting control information indicating a configuration to provide code block group (CBG)-level hybrid automatic repeat request (HARQ) acknowledgment feedback for a plurality of HARQ identifiers (IDs);
transmitting a plurality of transport blocks (TBs), each TB of the plurality of TBs associated with a respective one of the plurality of HARQ IDs and comprising one or more CBGs; and
receiving, based at least in part on the control information, a bit sequence providing CBG-level HARQ acknowledgment feedback for the plurality of HARQ IDs, wherein the bit sequence comprises a respective HARQ acknowledgment feedback bit for each of the CBGs of each TB for the plurality of HARQ IDs.
8. The method of claim 7 , wherein receiving the bit sequence comprises:
receiving the bit sequence in a single subframe.
9. The method of claim 7 , further comprising:
establishing a connection with a UE, wherein transmitting the control information comprises transmitting the control information to the UE based at least in part on establishing the connection.
10. The method of claim 9 , wherein transmitting the control information comprises:
transmitting a radio resource control configuration comprising the control information as part of establishing the connection with the UE.
11. The method of claim 7 , wherein transmitting the control information comprises:
transmitting a dynamic feedback configuration that is associated with the plurality of HARQ IDs.
12. An apparatus for wireless communication, comprising:
a receiver;
a transmitter;
a processor;
memory coupled with the processor; and
instructions stored in the memory and operable, when executed by the processor, to cause the apparatus to:
receive, via the receiver, control information indicating a configuration to provide code block group (CBG)-level hybrid automatic repeat request (HARQ) acknowledgment feedback for a plurality of HARQ identifiers (IDs);
receive, via the receiver, a plurality of transport blocks (TBs), each TB of the plurality of TBs associated with a respective one of the plurality of HARQ IDs and comprising one or more CBGs;
generate, based at least in part on the control information, a bit sequence providing CBG-level HARQ acknowledgment feedback for the plurality of HARQ IDs, wherein the bit sequence comprises a respective HARQ acknowledgment feedback bit for each of the CBGs of each TB for the plurality of HARQ IDs; and
transmit, via the transmitter, the bit sequence.
13. The apparatus of claim 12 , wherein the instructions to transmit the bit sequence are operable, when executed by the processor, to cause the apparatus to:
transmit the bit sequence in a single subframe.
14. The apparatus of claim 13 , wherein the instructions are further operable, when executed by the processor, to cause the apparatus to:
perform a listen-before-talk procedure associated with an unlicensed radio frequency spectrum band, wherein the instructions to transmit the bit sequence are operable, when executed by the processor, to cause the apparatus to transmit the bit sequence in the single subframe using resources of the unlicensed radio frequency spectrum band based at least in part on performing the listen-before-talk procedure.
15. The apparatus of claim 12 , wherein the instructions are further operable, when executed by the processor, to cause the apparatus to:
establish a connection with a base station, wherein the instructions to receive the control information are operable, when executed by the processor, to cause the apparatus to receive the control information from the base station based at least in part on establishing the connection; and
selecting a physical uplink control channel for transmission of the bit sequence based at least in part on establishing the connection.
16. The apparatus of claim 15 , wherein the instructions to receive the control information are operable, when executed by the processor, to cause the apparatus to:
receive a radio resource control configuration comprising the control information as part of establishing the connection with the base station.
17. The apparatus of claim 12 , wherein the instructions to receive the control information are operable, when executed by the processor, to cause the apparatus to:
receive a dynamic feedback configuration that is associated with the plurality of HARQ IDs.
18. An apparatus for wireless communication, comprising:
a transmitter;
a receiver;
a processor;
memory coupled with the processor; and
instructions stored in the memory and operable, when executed by the processor, to cause the apparatus to:
transmit, via the transmitter, control information indicating a configuration to provide code block group (CBG)-level hybrid automatic repeat request (HARQ) acknowledgment feedback for a plurality of HARQ identifiers (IDs);
transmit, via the transmitter, a plurality of transport blocks (TBs), each TB of the plurality of TBs associated with a respective one of the plurality of HARQ IDs and comprising one or more CBGs;
receive, via the receiver and based at least in part on the control information, a bit sequence providing CBG-level feedback for the plurality of HARQ IDs, wherein the bit sequence comprises a respective HARQ acknowledgment feedback bit for each of the CBGs of each TB for the plurality of HARQ IDs.
19. The apparatus of claim 18 , wherein the instructions to receive the bit sequence are operable, when executed by the processor, to cause the apparatus to:
receive the bit sequence in a single subframe.
20. The apparatus of claim 18 , wherein the instructions are further operable, when executed by the processor, to cause the apparatus to:
establish a connection with a UE, wherein the instructions to transmit the control information are operable, when executed by the processor, to cause the apparatus to transmit the control information to the UE based at least in part on establishing the connection.
21. The apparatus of claim 20 , wherein the instructions to transmit the control information are operable, when executed by the processor, to cause the apparatus to:
transmit a radio resource control configuration comprising the control information as part of establishing the connection with the UE.
22. The apparatus of claim 18 , wherein the instructions to transmit the control information are operable, when executed by the processor, to cause the apparatus to:
transmit a dynamic feedback configuration that is associated with the plurality of HARQ IDs.