Rate matching for a physical downlink shared channel (PDSCH)

Patent metadata

Field	Value
Publication number	US-11711817-B2
Application number	US-202117226892-A
Country	US
Kind code	B2
Filing date	Apr 9, 2021
Priority date	Apr 10, 2020
Publication date	Jul 25, 2023
Grant date	Jul 25, 2023

Abstract

Aspects of the present disclosure provide apparatus, methods, processing systems, and computer readable mediums for performing rate matching for a physical downlink shared channel (PDSCH). An example method generally includes monitoring for at least first and second downlink control information (DCI) formats for scheduling a physical downlink shared channel (PDSCH), determining a bitwidth of a rate matching indicator field of at least one of the first DCI format or the second DCI format, and performing PDSCH rate matching for a PDSCH scheduled by a DCI of the first or second DCI format based, at least in part, on the rate matching indicator field in the DCI or a format of the DCI.

First claim

The invention claimed is:

1. A method for wireless communications by a user equipment (UE), comprising:
monitoring for at least first and second downlink control information (DCI) formats for scheduling a physical downlink shared channel (PDSCH), wherein the second DCI format schedules a PDSCH using DCI format 1_2;
determining a bitwidth of a rate matching indicator field of at least one of the first DCI format or the second DCI format; and
performing PDSCH rate matching for a PDSCH scheduled by a DCI of the first or second DCI format based, at least in part, on the rate matching indicator field in the DCI or on a format of the DCI, wherein the PDSCH is scheduled by the DCI of DCI format 1_0 or by using semi-persistent scheduling activated by the DCI of DCI format 1_0, and wherein performing the PDSCH rate matching comprises rate matching the PDSCH based on rate matching patterns that do not belong to rate matching pattern groups included in the second DCI format.

2. The method of claim 1 , wherein the rate matching comprises:
rate matching for a first PDSCH based on the rate matching indicator field in the first DCI format; and
rate matching for a second PDSCH based on the rate matching indicator field in the second DCI format.

3. The method of claim 1 , wherein: the bitwidth of the rate matching indicator field in the first DCI format is zero.

4. The method of claim 3 , wherein the rate matching comprises:
rate matching the PDSCH scheduled by the second DCI format around REs corresponding to configured resources in rate matching pattern groups included in the second DCI format.

5. The method of claim 3 , wherein the rate matching comprises:
rate matching a PDSCH based on any configured rate matching pattern, including rate matching patterns specified by rate matching pattern groups included in the second DCI format.

6. The method of claim 1 , wherein the rate matching further comprises:
rate matching the PDSCH based on any configured rate matching pattern, including rate matching patterns specified by rate matching pattern groups included in the second DCI format.

7. The method of claim 1 , wherein:
the first DCI format corresponds to a low priority level,
the second DCI format corresponds to a high priority level, and
the rate matching the PDSCH comprises rate matching for a PDSCH based on pattern groups identified in the first DCI format.

8. The method of claim 1 , wherein the first DCI format schedules a PDSCH using DCI format 1_0 and the second DCI schedules a PDSCH using DCI format 1_2.

9. An apparatus for wireless communications by a user equipment, comprising:
a processor configured to:
monitor for at least first and second downlink control information (DCI) formats for scheduling a physical downlink shared channel (PDSCH), wherein the second DCI format schedules a PDSCH using DCI format 1_2,
determine a bitwidth of a rate matching indicator field of at least one of the first DCI format or the second DCI format, and
perform PDSCH rate matching for a PDSCH scheduled by a DCI of the first or second DCI format based, at least in part, on the rate matching indicator field in the DCI or on a format of the DCI, wherein the PDSCH is scheduled by the DCI of DCI format 1_0 or by using semi-persistent scheduling activated by the DCI of DCI format 1_0, and wherein performing the PDSCH rate matching comprises rate matching the PDSCH based on rate matching patterns that do not belong to rate matching pattern groups included in the second DCI format; and

a memory.

10. The apparatus of claim 9 , wherein the rate matching comprises:
rate matching for a first PDSCH based on the rate matching indicator field in the first DCI format; and
rate matching for a second PDSCH based on the rate matching indicator field in the second DCI format.

11. The apparatus of claim 9 , wherein: the bitwidth of the rate matching indicator field in the first DCI format is zero.

12. The apparatus of claim 11 , wherein the rate matching comprises:
rate matching the PDSCH scheduled by the second DCI format around REs corresponding to configured resources in rate matching pattern groups included in the second DCI format.

13. The apparatus of claim 11 , wherein the rate matching comprises:
rate matching a PDSCH based on any configured rate matching pattern, including rate matching patterns specified by rate matching pattern groups included in the second DCI format.

14. The apparatus of claim 9 , wherein the rate matching further comprises:
rate matching the PDSCH based on any configured rate matching pattern, including rate matching patterns specified by rate matching pattern groups included in the second DCI format.

15. The apparatus of claim 9 , wherein:
the first DCI format corresponds to a low priority level,
the second DCI format corresponds to a high priority level, and
the rate matching the PDSCH further comprises rate matching for a PDSCH based on pattern groups identified in the first DCI format.

16. The apparatus of claim 9 , wherein the first DCI format schedules a PDSCH using DCI format 1_0 and the second DCI schedules a PDSCH using DCI format 1_2.

17. An apparatus for wireless communications by a user equipment (UE), comprising:
means for monitoring for at least first and second downlink control information (DCI) formats for scheduling a physical downlink shared channel (PDSCH), wherein the second DCI format schedules a PDSCH using DCI format 1_2;
means for determining a bitwidth of a rate matching indicator field of at least one of the first DCI format or the second DCI format; and
means for performing PDSCH rate matching for a PDSCH scheduled by a DCI of the first or second DCI format based, at least in part, on the rate matching indicator field in the DCI or on a format of the DCI, wherein the PDSCH is scheduled by the DCI of DCI format 1_0 or by using semi-persistent scheduling activated by the DCI of DCI format 1_0, and wherein performing the PDSCH rate matching comprises rate matching the PDSCH based on rate matching patterns that do not belong to rate matching pattern groups included in the second DCI format.

18. The apparatus of claim 17 , wherein the rate matching comprises:
rate matching for a first PDSCH based on the rate matching indicator field in the first DCI format; and
rate matching for a second PDSCH based on the rate matching indicator field in the second DCI format.

19. The apparatus of claim 17 , wherein the bitwidth of the rate matching indicator field in the first DCI format is zero.

20. The apparatus of claim 19 , wherein the rate matching further comprises one or more of:
rate matching the PDSCH scheduled by the second DCI format around REs corresponding to configured resources in rate matching pattern groups included in the second DCI format,
rate matching the PDSCH based on rate matching patterns that do not belong to rate matching pattern groups included in the second DCI format, or
rate matching the PDSCH based on any configured rate matching pattern, including rate matching patterns specified by rate matching pattern groups included in the second DCI format.

21. The apparatus of claim 17 , wherein:
the first DCI format corresponds to a low priority level,
the second DCI format corresponds to a high priority level, and
the rate matching the PDSCH further comprises rate matching for a PDSCH based on pattern groups identified in the first DCI format.

22. The apparatus of claim 17 , wherein the first DCI format sch

Assignees

• Qualcomm Inc

Inventors

• Hosseini Seyedkianoush
• Takeda Kazuki
• Gaal Peter

Classifications

• H04W72/23 Primary

  in the downlink direction of a wireless link, i.e. towards a terminal · CPC title

• H04L1/0069

  Puncturing patterns · CPC title

• H04W72/535

  based on resource usage policies · CPC title

• H04W72/569

  of the traffic information · CPC title

• H04L5/0044 Primary

  Allocation of payload; Allocation of data channels, e.g. PDSCH or PUSCH · CPC title