IP Library › Granted Patent US 12,323,923
Granted Patent B2
US 12,323,923 · App. 17/790,616 · Granted Jun 3, 2025

MAC CE for configuring pathloss reference signal for PUSCH

Inventors: Bingchao Liu (Changping District, CN); Chenxi Zhu (Haidian District, CN); Lianhai Wu (Chaoyang, CN); Wei Ling (Changping, CN); Yi Zhang (Chao Yang District, CN)
Assignee: Lenovo (Beijing) Ltd.
H04W52/146H04W52/242H04W52/38
View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 12,323,923
App. No.
17/790,616
Granted
Jun 3, 2025
Kind
B2
Abstract

Methods and apparatuses for configuring PUSCH pathloss reference signal for SRI PUSCH power control are disclosed. A method comprises configuring PUSCH pathloss reference signal for one or more SRI PUSCH power controls by using a MAC CE, and transmitting a PDSCH carrying the MAC CE.

Claims (32)

1. A method performed by a base unit, the method comprising:

configuring a physical uplink shared channel (PUSCH) pathloss reference signal for one or more sounding reference signal (SRS) resource indicator (SRI) PUSCH power controls using a media access control (MAC) control element (CE); and

transmitting the MAC CE via a physical downlink shared channel (PDSCH), wherein the MAC CE indicates one or more SRI-PUSCH-PowerControl identifiers (IDs) corresponding to the one or more SRI PUSCH power controls, an SRI-PUSCH-PowerControl ID indicating an SRS PUSCH power control for which the MAC CE applies.

2. The method of claim 1 , wherein the MAC CE further includes one or more PUSCH pathloss reference signal IDs each of which indicates a pathloss reference signal mapped to the SRI PUSCH power control indicated by the SRI-PUSCH-PowerControl ID in the MAC CE.

3. The method of claim 2 , wherein each PUSCH pathloss reference signal ID is directly indicated by a 2-bits field.

4. The method of claim 2 , wherein the configured PUSCH pathloss reference signal for each SRI-PUSCH-PowerControl ID is indicated by a 4-bits bitmap, wherein each bit indicates an activation status of a configured PUSCH pathloss reference signal, and only a single bit is activated for the SRI PUSCH power control indicated by the SRI-PUSCH-PowerControl ID.

5. The method of claim 1 , wherein each SRI-PUSCH-PowerControl ID is directly indicated by a 4-bits field.

6. The method of claim 1 , wherein the MAC CE includes a serving cell identifier (ID), and when the serving cell ID is within a simultaneousSpatialRelationCellList, the PUSCH pathloss reference signal is mapped to the SRI PUSCH power controls with a same SRI-PUSCH-PowerControl ID for all bandwidth parts (BWPs) in cells within the simultaneousSpatialRelationCellList containing the serving cell ID.

7. A base unit for wireless communication, comprising:

at least one memory; and

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

configure a physical uplink shared channel (PUSCH) pathloss reference signal for one or more sounding reference signal (SRS) resource indicator (SRI) PUSCH power controls by using a media access control (MAC) control element (CE); and

transmit the MAC CE via a physical downlink shared channel (PDSCH), wherein the MAC CE indicates one or more SRI-PUSCH-PowerControl identifiers (IDs) corresponding to the one or more SRI PUSCH power controls, an SRI-PUSCH-PowerControl ID indicating an SRS PUSCH power control for which the MAC CE applies.

8. The base unit of claim 7 , wherein the MAC CE further includes one or more PUSCH pathloss reference signal IDs each of which indicates a pathloss reference signal mapped to the SRI PUSCH power control indicated by the SRI-PUSCH-PowerControl ID in the MAC CE.

9. The base unit of claim 8 , wherein each PUSCH pathloss reference signal ID is directly indicated by a 2-bits field.

10. The base unit of claim 8 , wherein the configured PUSCH pathloss reference signal for each SRI-PUSCH-PowerControl ID is indicated by a 4-bits bitmap, wherein each bit indicates an activation status of a configured PUSCH pathloss reference signal, and only a single bit is activated for the SRI PUSCH power control indicated by the SRI-PUSCH-PowerControl ID.

11. The base unit of claim 7 , wherein each SRI-PUSCH-PowerControl ID is directly indicated by a 4-bits field.

12. The base unit of claim 7 , wherein the MAC CE includes a serving cell identifier (ID), and when the serving cell ID is within a simultaneousSpatialRelationCellList, the PUSCH pathloss reference signal is mapped to the SRI PUSCH power controls with a same SRI-PUSCH-PowerControl ID for all bandwidth parts (BWPs) in cells within the simultaneousSpatialRelationCellList containing the serving cell ID.

13. A user equipment (UE) for wireless communication, 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 a media access control (MAC) control element (CE) via a physical downlink shared channel (PDSCH), wherein the MAC CE is used to configure a physical uplink shared channel (PUSCH) pathloss reference signal for one or more sounding reference signal (SRS) resource indicator (SRI) PUSCH power controls, and wherein the MAC CE indicates one or more SRI-PUSCH-PowerControl identifiers (IDs) corresponding to the one or more SRI PUSCH power controls, an SRI-PUSCH-PowerControl ID indicating an SRS PUSCH power control for which the MAC CE applies.

14. The UE of claim 13 , wherein the MAC CE further includes one or more PUSCH pathloss reference signal IDs each of which indicates a pathloss reference signal mapped to the SRI PUSCH power control indicated by the SRI-PUSCH-PowerControl ID in the MAC CE.

15. The UE of claim 14 , wherein each PUSCH pathloss reference signal ID is directly indicated by a 2-bits field.

16. The UE of claim 14 , wherein the configured PUSCH pathloss reference signal for each SRI-PUSCH-PowerControl ID is indicated by a 4-bits bitmap, wherein each bit indicates an activation status of a configured PUSCH pathloss reference signal, and only a single bit is activated for the SRI PUSCH power control indicated by the SRI-PUSCH-PowerControl ID.

17. The UE of claim 13 , wherein, the MAC CE includes a serving cell identifier (ID), and when the serving cell ID is within a simultaneousSpatialRelationCellList, the PUSCH pathloss reference signal is mapped to the SRI PUSCH power controls with a same SRI-PUSCH-PowerControl ID for all bandwidth parts (BWPs) in cells within the simultaneousSpatialRelationCellList containing the serving cell ID.

18. A processor for wireless communication, comprising:

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

configure a physical uplink shared channel (PUSCH) pathloss reference signal for one or more sounding reference signal (SRS) resource indicator (SRI) PUSCH power controls using a media access control (MAC) control element (CE); and

transmit the MAC CE via a physical downlink shared channel (PDSCH), wherein the MAC CE indicates one or more SRI-PUSCH-PowerControl identifiers (IDs) corresponding to the one or more SRI PUSCH power controls, an SRI-PUSCH-PowerControl ID indicating an SRS PUSCH power control for which the MAC CE applies.

19. The processor of claim 18 , wherein the MAC CE further includes one or more PUSCH pathloss reference signal IDs each of which indicates a pathloss reference signal mapped to the SRI PUSCH power control indicated by the SRI-PUSCH-PowerControl ID in the MAC CE.

20. The processor of claim 19 , wherein each PUSCH pathloss reference signal ID is directly indicated by a 2-bits field.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 14, 2022
From: LIU, BINGCHAO; ZHU, CHENXI; WU, LIANHAI; LING, WEI; ZHANG, YI
To: LENOVO (BEIJING) LTD.
Reel/Frame 060509/0987 →
Continuity (1)
Related Publication 20230039771A1 · Feb 9, 2023
References Cited (21)
US 20180160379A1 · Yokomakura et al. · 2018 [cited by applicant]
US 20190281588A1 · Zhang · 2019 [cited by examiner]
US 20190349867A1 · Molavianjazi · 2019 [cited by applicant]
US 20230017292A1 · Liu · 2023 [cited by examiner]
CA 3061633A1 · 2019 [cited by applicant]
EP 3567939A1 · 2019 [cited by applicant]
WO 2018203662A1 · 2018 [cited by applicant]
20911133.5 , “Extended European Search Report”, EP Application No. 20911133.5, Sep. 1, 2023, 12 pages. [cited by applicant]
3GPP , “Medium Access Control (MAC) protocol specification (1 of 3)”, 3GPP TS 38.321, V15.7.0 Release 15 [retrieved Oct. 16, 2023]. Retrieved from the Internet <https://www.etsi.org/deliver/etsi_ts/138300_138399/138321/… [cited by applicant]
3GPP , “Medium Access Control (MAC) protocol specification (2 of 3)”, 3GPP TS 38.321, V15.7.0 Release 15 [retrieved Oct. 16, 2023]. Retrieved from the Internet <https://www.etsi.org/deliver/etsi_ts/138300_138399/138321/… [cited by applicant]
3GPP , “Medium Access Control (MAC) protocol specification (3 of 3)”, 3GPP TS 38.321, V15.7.0 Release 15 [retrieved Oct. 16, 2023]. Retrieved from the Internet <https://www.etsi.org/deliver/etsi_ts/138300_138399/138321/… [cited by applicant]
Huawei , et al., “MAC CE signalling for multi-beam enhancement”, 3GPP TSG-RAN WG2 Meeting#108, R2-1914676, Reno, USA [retrieved Oct. 16, 2023]. Retrieved from the Internet <https://www.3gpp.org/ftp/tsg_ran/WG2_RL2/TSGR2… [cited by applicant]
Catt , “Remaining Issues of NR Power Control”, 3GPP TSG RAN WG1 Meeting #94bis, R1-1810525, Chengdu, China [retrieved Aug. 5, 2022]. Retrieved from the Internet <https://www.3gpp.org/ftp/tsg_ran/WG1_RL1/TSGR1_94b/Docs?s… [cited by applicant]
Oppo , “Discussion on Multi-beam Operation Enhancements”, 3GPP TSG RAN WG1 #99, R1-1911844, Reno, USA [retrieved Aug. 5, 2022] retrieved from the internet <https://www.3gpp.org/ftp/tsg_ran/WG1_RL1/TSGR1_99/Docs>., Nov. … [cited by applicant]
PCT/CN2020/070237 , “International Preliminary Report on Patentability”, PCT Application No. PCT/CN2020/070237, Jul. 14, 2022, 5 pages. [cited by applicant]
PCT/CN2020/070237 , “International Search Report and Written Opinion”, PCT Application No. PCT/CN2020/070237, Oct. 10, 2020, 6 pages. [cited by applicant]
ZTE , “Enhancements on multi-beam operation”, 3GPP TSG RAN WG1 Meeting #98bis, R1-1910285, Chongqing, China [retrieved Aug. 5, 2022]. Retrieved from the internet <https://www.3gpp.org/ftp/tsg_ran/WG1_RL1/TSGR1_98b/Docs>… [cited by applicant]
202080090878.2 , “Foreign Office Action”, CN Application No. 202080090878.2, Jun. 26, 2024, 13 pages. [cited by applicant]
Vivo , “Discussion on eMIMO MAC CE”, 3GPP TSG-RAN WG2 Meeting #108, R2-1916259, Reno, USA [retrieved Nov. 17, 2023]. Retrieved from the Internet <https://www.3gpp.org/ftp/tsg_ran/WG2_RL2/TSGR2_108/Docs>, Nov. 2019, 7 pa… [cited by applicant]
ZTE , “Enhancements on multi-beam operation”, 3GPP TSG RAN WG1 Meeting #99, R1-1911931, Reno, US [retrieved Jan. 29, 2023]. Retrieved from the Internet <https://www.3gpp.org/ftp/tsg_ran/WG1_RL1/TSGR1_99/Docs>., Nov. 201… [cited by applicant]
202080090878.2 , “Foreign Office Action”, CN Application No. 202080090878.2, Oct. 21, 2024, 12 pages. [cited by applicant]