Granted Patent B2

US 12,562,875 · App. 17/906,156 · Granted Feb 24, 2026

Inventors: Ankit Bhamri (Rödermark, DE); Ali Ramadan Ali (Kraiburg am Inn, DE)

Assignee: Lenovo (Singapore) Pte. Ltd.

H04L5/0092H04L5/0051

Abstract

Claims (27)

1 . A method performed by a user equipment (UE), the method comprising:

receiving an indication of a first subcarrier spacing value;

receiving a configuration for demodulation reference signal (DMRS) associated with a subcarrier spacing; and

determining a number of DMRS ports, by comparing the first subcarrier spacing value with a second subcarrier spacing value comprising one or more of 480 kHz or 960 kHz, wherein one or more of the DMRS ports are associated with different frequency domain orthogonal cover codes (OCC).

2 . The method of claim 1 , wherein the second subcarrier spacing value is fixed, semi-statically configured, or dynamically indicated, or a combination thereof.

3 . The method of claim 1 , wherein the number of DMRS ports decreases in response to the first subcarrier spacing value being greater than or equal to the second subcarrier spacing value.

4 . The method of claim 1 , wherein the frequency domain multiplexing type excludes frequency domain OCC based multiplexing.

5 . The method of claim 1 , further comprising determining parameters as a subset of a DMRS type.

6 . A user equipment (UE), comprising:

at least one memory; and

at least one processor coupled with the at least one memory and configured to cause the UE to:

receive an indication of a first subcarrier spacing value;

receive a configuration for demodulation reference signal (DMRS) associated with a subcarrier spacing; and

determine a number of DMRS ports, by comparing the first subcarrier spacing value with a second subcarrier spacing value comprising one or more of 480 kHz or 960 kHz, wherein one or more of the DMRS ports are associated with different frequency domain orthogonal cover codes (OCC).

7 . The UE of claim 6 , wherein the second subcarrier spacing value is fixed, semi-statically configured, or dynamically indicated, or a combination thereof.

8 . The UE of claim 6 , wherein the number of DMRS ports decreases in response to the first subcarrier spacing value being greater than or equal to the second subcarrier spacing value.

9 . The UE of claim 6 , wherein the at least one processor is configured to cause the UE to determine parameters as a subset of a DMRS type.

10 . The UE of claim 9 , wherein the number of DMRS ports depends on the DMRS type and is based on an antenna port field indicated in downlink control information.

11 . The UE of claim 9 , wherein a maximum number of DMRS ports equals a maximum allowed number of DMRS ports in response to the first subcarrier spacing value being greater than or equal to the second subcarrier spacing value.

12 . The UE of claim 6 , wherein frequency domain OCC based multiplexing is not indicated in response to the first subcarrier spacing value being greater than or equal to the second subcarrier spacing value.

13 . A processor for wireless communication, comprising:

at least one controller coupled with at least one memory and configured to cause the processor to:

receive an indication of a first subcarrier spacing value;

receive a configuration for demodulation reference signal (DMRS) associated with a subcarrier spacing; and

determine a number of DMRS ports, by comparing the first subcarrier spacing value with a second subcarrier spacing value comprising one or more of 480 kHz or 960 kHz, wherein one or more of the DMRS ports are associated with different frequency domain orthogonal cover codes (OCC).

14 . The processor of claim 13 , wherein the second subcarrier spacing value is fixed, semi-statically configured, or dynamically indicated, or a combination thereof.

15 . The processor of claim 13 , wherein the number of DMRS ports decreases in response to the first subcarrier spacing value being greater than or equal to the second subcarrier spacing value.

Assignments (1)

Continuity (2)

References Cited (20)