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:
one or more processors, configured to cause a user equipment (UE) to:
receive, via a radio resource control (RRC) layer from a radio access network (RAN) node, a configuration for receiving multiple physical downlink shared channel (PDSCH) transmissions, wherein each of the multiple PDSCH transmissions is based on same information;
determine multiple control resource sets (CORESETs) on the respective different component carriers for receiving multiple downlink control information (DCIs); and
receive, via a radio frequency interface of the UE, the multiple DCIs that are respectively for scheduling transmission of the multiple PDSCH transmissions based on the same information on respective different component carriers.
2. The apparatus of claim 1 , wherein the respective different component carriers have different numerologies.
3. The apparatus of claim 1 , wherein the multiple PDSCH transmissions have a same redundancy version.
4. The apparatus of claim 1 , wherein the multiple PDSCH transmissions have different redundancy versions.
5. The apparatus of claim 4 , wherein the multiple PDSCH transmissions have different redundancy versions based on a predefined pattern.
6. The apparatus of claim 1 , wherein the UE is further configured to:
receive RRC signaling indicating to perform soft combining of the multiple PDSCH transmissions; and
perform soft combining of the multiple PDSCH transmission based on the RRC signaling.
7. An apparatus comprising:
one or more processors, configured to cause a user equipment (UE) to:
receive, via a radio resource control (RRC) layer from a radio access network (RAN) node, a configuration for receiving one downlink control information (DCI) for scheduling transmission of a plurality of physical downlink shared channel (PDSCH) transmissions, wherein each of the plurality of PDSCH transmissions is based on same information bits; and
determine control resource set (CORESET) for receiving the one DCI;
receive the one DCI indicating scheduling of the plurality of PDSCH transmissions within one slot of one bandwidth part; and
receive the plurality of PDSCH transmissions within the one slot of the one bandwidth part.
8. The apparatus of claim 7 , wherein the multiple PDSCH transmissions have a same redundancy version.
9. The apparatus of claim 7 , wherein the multiple PDSCH transmissions have different redundancy versions.
10. The apparatus of claim 9 , wherein the multiple PDSCH transmissions have different redundancy versions based on a predefined pattern.
11. The apparatus of claim 7 , wherein the multiple PDSCH transmissions use the same number of orthogonal frequency division multiplexing (OFDM) symbols.
12. The apparatus of claim 11 , wherein the multiple PDSCH transmissions are received simultaneously on non-overlapping frequencies.
13. The apparatus of claim 7 , wherein the one DCI dynamically indicates whether or not the scheduled transmission includes the plurality of PDSCH transmissions.
14. An apparatus comprising:
one or more processors configured to cause a radio access network (RAN) node to:
configure, via a radio resource control (RRC) layer, a user equipment (UE) to receive one downlink control information (DCI) for scheduling transmission of multiple physical downlink shared channel (PDSCH) transmissions, each of the multiple PDSCH transmissions based on same information bits, and
determine a control resource set (CORESET) for transmitting the one DCI;
encode the one DCI for scheduling transmission of the multiple PDSCH transmissions based on the same information bits within one slot of one bandwidth part; and
encode the multiple PDSCH transmissions based on the same information bits for transmission within one slot of one bandwidth part.
15. The apparatus of claim 14 , wherein the multiple PDSCH transmissions have a same redundancy version.
16. The apparatus of claim 14 , wherein the multiple PDSCH transmissions have different redundancy versions.
17. The apparatus of claim 16 , wherein the multiple PDSCH transmissions have different redundancy versions based on a predefined pattern.
18. The apparatus of claim 14 , wherein the multiple PDSCH transmissions use the same number of orthogonal frequency division multiplexing (OFDM) symbols.
19. The apparatus of claim 14 , wherein the multiple PDSCH transmissions are transmitted simultaneously on non-overlapping frequencies.
20. The apparatus of claim 14 , wherein the one DCI dynamically indicates whether or not the scheduled transmission includes the plurality of PDSCH transmissions.