Enhancement of performance of ultra-reliable low-latency communication
The disclosure describes mechanisms for reliability enhancement on control channel and data channel and mechanisms in URLLC. An apparatus of a RAN node for URLLC includes baseband circuitry to configure at least one DCI for scheduling transmission of at least one PDSCH content having same information. For each DCI, the baseband circuitry determines a CORESET for transmitting the DCI. The disclosure further describes mechanisms for the support of low latency transmission in URLLC. To improve peak data rate and spectrum efficiency in FDD system, the RAN node configures a DCI for scheduling data transmission using blank resources of a self-contained slot structure. Further, CBG-based transmission with separate HARQ-ACK feedback is provided to configure a DCI for scheduling data transmission of a TB and to divide the TB into multiple CBGs, and to configure uplink control data to carry separate HARQ feedback for the CBGs.
1. An apparatus, comprising:
at least one processor configured to cause a user equipment (UE) to:
receive, via a radio resource control (RRC) layer from a radio access network (RAN) node, a message that includes a configuration for receiving at least two physical downlink shared channel (PDSCH) transmissions using at least two component carriers, the at least two PDSCH transmissions with the same PDSCH information for each of the at least two component carriers; and
receive, based at least in part on the configuration, the at least two PDSCH transmissions with the same PDSCH information using the at least two component carriers.
2. The apparatus of claim 1 , wherein the at least two component carriers have different numerologies.
3. The apparatus of claim 1 , wherein the at least two PDSCH transmissions have a same redundancy version.
4. The apparatus of claim 1 , wherein the at least two PDSCH transmissions have different redundancy versions.
5. The apparatus of claim 4 , wherein the at least two PDSCH transmissions have different redundancy versions based on a predefined pattern.
6. The apparatus of claim 1 , wherein the at least two PDSCH transmissions use the same number of orthogonal frequency division multiplexing (OFDM) symbols.
7. The apparatus of claim 1 , wherein the at least one processor is further configured to cause the UE to:
receive RRC signaling indicating to perform soft combining of the at least two PDSCH transmissions; and
perform soft combining of the at least two PDSCH transmission based on the RRC signaling.
8. A non-transitory computer accessible memory medium storing program instructions executable by at least one processor of a user equipment (UE) to:
receive, via a radio resource control (RRC) layer from a radio access network (RAN) node, a message that includes a configuration for receiving at least two physical downlink shared channel (PDSCH) transmissions using at least two component carriers, the at least two PDSCH transmissions with the same PDSCH information for each of the at least two component carriers; and
receive, based at least in part on the configuration, the at least two PDSCH transmissions with the same PDSCH information using the at least two component carriers.
9. The non-transitory computer accessible memory medium of claim 8 , wherein the at least two component carriers have different numerologies.
10. The non-transitory computer accessible memory medium of claim 8 , wherein the at least two PDSCH transmissions have a same redundancy version.
11. The non-transitory computer accessible memory medium of claim 8 , wherein the at least two PDSCH transmissions have different redundancy versions.
12. The non-transitory computer accessible memory medium of claim 8 , wherein the at least two PDSCH transmissions have different redundancy versions based on a predefined pattern.
13. The non-transitory computer accessible memory medium of claim 8 , wherein the program instructions are further executable to:
receive RRC signaling indicating to perform soft combining of the at least two PDSCH transmissions; and
perform soft combining of the at least two PDSCH transmission based on the RRC signaling.
14. A method for operating a radio access network (RAN) node, comprising:
by the RAN node:
transmitting, to a user equipment (UE), a message that includes a configuration for receiving at least two physical downlink shared channel (PDSCH) transmissions using at least two component carriers, the at least two PDSCH transmissions with the same PDSCH information for each of the at least two component carriers; and
transmitting, to the UE, the at least two PDSCH transmissions with the same PDSCH information using the at least two component carriers.
15. The method of claim 14 , wherein the at least two component carriers have different numerologies.
16. The method of claim 14 , wherein the at least two PDSCH transmissions have a same redundancy version.
17. The method of claim 14 , wherein the at least two PDSCH transmissions have different redundancy versions.
18. The method of claim 14 , wherein the at least two PDSCH transmissions have different redundancy versions based on a predefined pattern.
19. The method of claim 14 , wherein the at least two PDSCH transmissions use the same number of orthogonal frequency division multiplexing (OFDM) symbols.
20. The method of claim 14 , further comprising:
transmit, to the UE, RRC signaling indicating to perform soft combining of the at least two PDSCH transmissions, wherein the UE is configured to perform soft combining of the at least two PDSCH transmission based on the RRC signaling.