Granted Patent B2

US 12,381,683 · App. 17/934,627 · Granted Aug 5, 2025

Inventors: Haitong Sun (Cupertino, CA); Chunxuan Ye (San Diego, CA); Dawei Zhang (Saratoga, CA); Hong He (San Jose, CA); Huaning Niu (San Jose, CA); Seyed Ali Akbar Fakoorian (San Diego, CA); Wei Zeng (Saratoga, CA)

Assignee: Apple Inc.

H04L5/0051H04J13/004H04L5/0007

Abstract

Claims (49)

1. A processor of a user equipment (UE) configured to:

establish a connection to a fifth generation (5G) new radio (NR) network, wherein the connection is configured to utilize cyclic prefix (CP)—orthogonal frequency division multiplexing (OFDM) waveform and demodulation reference signal (DMRS) type 1;

receive a DMRS port indication configured to indicate one or more DMRS ports assigned to the UE, wherein single symbol DMRS type 1 is configured to support up to 8 DMRS ports and two symbol DMRS type 1 is configured to support up to 16 DMRS ports;

receive a bitmap for a physical downlink shared channel (PDSCH), wherein a first resource block group (RBG) and a last RBG indicated in the bitmap contain an even number of physical resource blocks (PRBs); and

perform a transmission operation or a reception operation using the one or more DMRS ports assigned to the UE.

2. The processor of claim 1 , wherein the connection is further configured with a frequency domain (FD)—orthogonal cover code (OCC) length of 4.

3. The processor of claim 2 , wherein a physical resource block (PRB) comprises at least a first code division multiplex (CDM) group and a second CDM group that occupy every other subcarrier for a span of 8 consecutive subcarriers of the PRB.

4. The processor of claim 2 , wherein a physical resource block (PRB) comprises at least a first code division multiplex (CDM) group and a second CDM group,

wherein the first CDM group occupies two sets of 2 consecutive subcarriers of the PRB, and

wherein the second CDM group occupies two sets of 2 consecutive subcarriers of the PRB.

5. The processor of claim 2 , wherein a physical resource block (PRB) comprises at least a first code division multiplex (CDM) group and a second CDM group,

wherein the first CDM group occupies a set of 4 consecutive subcarriers of the PRB, and

wherein the second CDM group occupies a set of 4 consecutive subcarriers of the PRB.

6. The processor of claim 2 , wherein a physical resource block (PRB) comprises at least a first code division multiplex (CDM) group and a second CDM group,

wherein neither the first CDM group or the second CDM group are configured across a PRB boundary.

7. The processor of claim 2 , wherein a physical resource block (PRB) comprises at least a first code division multiplex (CDM) group and a second CDM group,

wherein neither the first CDM group or the second CDM group are configured across a physical resource block group (PRG) boundary.

8. The processor of claim 2 , wherein the FD-OCC length of 4 is only configured for a wideband physical resource block group (PRG) configuration.

9. The processor of claim 2 , wherein a physical resource block (PRB) comprises at least a first code division multiplex (CDM) group and a second CDM group,

wherein the first CDM group and the second CDM group are configured across a physical resource block group (PRG) boundary between an adjacent first PRG and a second PRG, and

wherein a precoding is used in both the first PRG and the second PRG.

10. The processor of claim 1 , wherein the connection is further configured with a frequency domain (FD)—orthogonal cover code (OCC) length of 6.

11. The processor of claim 10 , wherein a physical resource block (PRB) comprises at least a first code division multiplex (CDM) group and a second CDM group that occupy every other subcarrier of the PRB.

12. The processor of claim 10 , wherein a physical resource block (PRB) comprises at least a first code division multiplex (CDM) group and a second CDM group,

wherein the first CDM group occupies two sets of 3 consecutive subcarriers of the PRB, and

wherein the second CDM group occupies two sets of 3 consecutive subcarriers of the PRB.

13. The processor of claim 10 , wherein a physical resource block (PRB) comprises at least a first code division multiplex (CDM) group and a second CDM group,

wherein the first CDM group occupies a set of 6 consecutive subcarriers of the PRB, and

wherein the second CDM group occupies a set of 6 consecutive subcarriers of the PRB.

14. The processor of claim 1 , wherein the UE is configured with multiple frequency domain (FD)—orthogonal cover code (OCC) patterns using radio resource control (RRC) signaling.

15. The processor of claim 14 , further configured to:

receive downlink control information (DCI), the DCI configured to change a configured FD-OCC pattern from a first FD-OCC pattern to a second different FD-OCC pattern.

16. The processor of claim 14 , further configured to:

receive a medium access control (MAC) control element (CE), the DCI configured to change a configured FD-OCC pattern from a first FD-OCC pattern to a second different FD-OCC pattern.

17. A processor of a user equipment (UE) configured to:

establish a connection to a fifth generation (5G) new radio (NR) network, wherein the connection is configured to utilize cyclic prefix (CP)—orthogonal frequency division multiplexing (OFDM) waveform and demodulation reference signal (DMRS) type 2;

receive a DMRS port indication configured to indicate one or more DMRS ports assigned to the UE, wherein single symbol DMRS type 2 is configured to support up to 12 DMRS ports and two symbol DMRS type 2 is configured to support up to 24 DMRS ports;

receive a bitmap for a physical downlink shared channel (PDSCH), wherein a first resource block group (RBG) and a last RBG indicated in the bitmap contain an even number of physical resource blocks (PRBs); and

perform a transmission operation or a reception operation using the one or more DMRS ports assigned to the UE.

18. The processor of claim 17 , wherein the connection is further configured with a frequency domain (FD)—orthogonal cover code (OCC) length of 4.

19. The processor of claim 18 , wherein a physical resource block (PRB) comprises at least a first code division multiplex (CDM) group, a second CDM group and a third CDM group,

wherein the first CDM group occupies two sets of 2 consecutive subcarriers of the PRB,

wherein the second CDM group occupies two sets of 2 consecutive subcarriers of the PRB, and

wherein the third CDM group occupies two sets of 2 consecutive subcarriers of the PRB.

20. The processor of claim 18 , wherein a physical resource block (PRB) comprises at least a first code division multiplex (CDM) group, a second CDM group and a third CDM group,

wherein the first CDM group occupies a first set of 4 consecutive subcarriers of the PRB,

wherein the second CDM group occupies a second set of 4 consecutive subcarriers of the PRB, and

wherein the third CDM group occupies a third set of 4 consecutive subcarriers of the PRB.

21. The processor of claim 20 , wherein a code division multiplex (CDM) is applied starting from point A common resource block.

Assignments (1)

Continuity (1)

References Cited (19)