IP Library › Granted Patent US 12,218,877
Granted Patent B2
US 12,218,877 · App. 18/113,997 · Granted Feb 4, 2025

Reference signal configuration for extension carriers and carrier segments

Inventors: Sung-Hyuk Shin (Northvale, NJ); ChangSoo Koo (Melville, NY); Fengjun Xi (San Diego, CA); Moon-il Lee (Melville, NY); Janet A. Stern-Berkowitz (Little Neck, NY); Ghyslain Pelletier (Montréal, CA)
Assignee: InterDigital Patent Holdings, Inc.
H04L5/0051H04L5/001H04L5/0048H04L27/2613H04W8/30H04W72/0446H04B7/0632H04L5/005H04L5/0092
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Quick Facts
Patent No.
US 12,218,877
App. No.
18/113,997
Granted
Feb 4, 2025
Kind
B2
Abstract

Reference signals configured for use with extension carriers and/or carrier segments are described. Reference signals for extension carriers and/or carrier segments may include demodulation reference signals (e.g., user equipment-specific reference signals), cell-specific reference signals, and channel-state information reference signals. Methods, systems and apparatuses for configuring extension carriers and/or carrier segments with one or more of the reference signals (e.g., positioning one or more reference signal symbols in extension carriers and/or carrier segments) are described.

Claims (26)

1. A method for wireless communications, the method comprising:

determining a set of demodulation reference signal (DM-RS) configuration information, each DM-RS configuration information corresponding to a respective carrier segment of a set of carrier segments, wherein each respective carrier segment is used for transmitting a respective physical data shared channel (PDSCH) transmission, and wherein each respective DM-RS configuration information indicates one or more DM-RS parameters that are used to determine a respective DM-RS structure for each respective carrier segment, and wherein the respective DM-RS structure for each respective carrier segment comprises a different mapping of one or more DM-RSs to physical resources associated with a corresponding PDSCH; and

transmitting a PDSCH transmission in at least one carrier segment of the set of carrier segments, wherein the transmitted PDSCH transmission comprises the one or more DM-RSs that are in accordance with the respective DM-RS structure for the at least one carrier segment.

2. The method of claim 1 , wherein each respective carrier segment of the set of carrier segments corresponds to a different set of frequency resources.

3. The method of claim 1 , wherein each respective carrier segment comprises a set of consecutive physical resource blocks (PRBs).

4. The method of claim 3 , wherein the set of consecutive PRBs comprise a set of resource elements (REs).

5. The method of claim 1 , wherein the set of DM-RS configuration information are transmitted via a Radio Resource Control (RRC) signaling.

6. The method of claim 1 , wherein the one or more DM-RS parameters comprise frequency domain information associated with the respective DM-RS structure for the PDSCH transmission.

7. The method of claim 1 , wherein the one or more DM-RS parameters comprise time density information associated with the respective DM-RS structure for the PDSCH transmission.

8. The method of claim 7 , wherein the time density information comprises information related to which of a set of OFDM symbols will include the one or more DM-RSs.

9. A network element associated with a base station, the network element configured to:

determine a set of demodulation reference signal (DM-RS) configuration information, each DM-RS configuration information corresponding to a respective carrier segment of a set of carrier segments, wherein each respective carrier segment is used for transmitting a respective physical data shared channel (PDSCH) transmission, and wherein each respective DM-RS configuration information indicates one or more DM-RS parameters that are used to determine a respective DM-RS structure for each respective carrier segment, and wherein the respective DM-RS structure for each respective carrier segment comprises a different mapping of one or more DM-RSs to physical resources associated with a corresponding PDSCH; and

transmit a PDSCH transmission in at least one carrier segment of the set of carrier segments, wherein the transmitted PDSCH transmission comprises the one or more DM-RSs that are in accordance with the respective DM-RS structure for the at least one carrier segment.

10. The network element of claim 9 , wherein each respective carrier segment of the set of carrier segments corresponds to a different set of frequency resources.

11. The network element of claim 9 , wherein each respective carrier segment comprises a set of consecutive physical resource blocks (PRBs).

12. The network element of claim 9 , wherein the set of DM-RS configuration information are transmitted via a Radio Resource Control (RRC) signaling.

13. The network element of claim 9 , wherein the one or more DM-RS parameters comprise frequency domain information associated with the respective DM-RS structure for the PDSCH transmission.

14. The network element of claim 9 , wherein the one or more DM-RS parameters comprise time density information associated with the respective DM-RS structure for the PDSCH transmission.

15. The network element of claim 14 , wherein the time density information comprises information related to which of a set of OFDM symbols will include the one or more DM-RSs.

16. A wireless transmit/receive unit (WTRU) comprising a processor configured to:

receive demodulation reference signal (DM-RS) configuration information, wherein the DM-RS configuration information indicates respective DM-RS mapping information for each of a plurality of carrier segments, the respective DM-RS mapping information for each of the plurality of carrier segments comprises respective information associated with orthogonal division multiplexing (OFDM) symbols for physical downlink shared channel (PDSCH) DM-RS reception on a respective carrier segment, and the respective DM-RS mapping information for each of the plurality of carrier segments comprises respective information associated with subcarriers for PDSCH DM-RS reception on the respective carrier segment; and

receive a PDSCH transmission in at least one carrier segment of the plurality of carrier segments, wherein the PDSCH transmission comprises one or more DM-RSs that are received in accordance with the respective DM-RS mapping information for the at least one carrier segment.

17. The WTRU of claim 16 , wherein the DM-RS configuration information indicates respective DM-RS sequence information for each of the plurality of carrier segments.

18. The WTRU of claim 16 , wherein the DM-RS configuration information is received via L2/L3 signaling.

19. The WTRU of claim 18 , wherein the L2/L3 signaling comprises an RRC message.

20. The WTRU of claim 16 , wherein each of the plurality of carrier segments comprise a contiguous set of resource blocks.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 23, 2023
From: SHIN, SUNG-HYUK; KOO, CHANGSOO; XI, FENGJUN; LEE, MOON-IL; STERN-BERKOWITZ, JANET A.; PELLETIER, GHYSLAIN
To: INTERDIGITAL PATENT HOLDINGS, INC.
Reel/Frame 063072/0978 →
Continuity (5)
Continuation 16841397 · Apr 6, 2020
Continuation 15071924 · Mar 16, 2016
Continuation 13571583 · Aug 10, 2012
Provisional Application 61523276 · Aug 12, 2011
Related Publication 20230208591A1 · Jun 29, 2023
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