IP Library › Granted Patent US 12,368,485
Granted Patent B2
US 12,368,485 · App. 18/401,173 · Granted Jul 22, 2025

Method and apparatus for reciprocity based CSI-RS transmission and reception

Inventors: Md. Saifur Rahman (Plano, TX); Eko Onggosanusi (Coppell, TX)
Assignee: Samsung Electronics Co., Ltd.
H04B7/0626H04J1/16H04L5/0048H04W24/08
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 12,368,485
App. No.
18/401,173
Granted
Jul 22, 2025
Kind
B2
Abstract

A method for operating a user equipment (UE) comprises receiving information about a measurement region that is associated with P ports, where P≥10 and based on the information, identifying the measurement region, measuring the P ports associated with the measurement region, and determining a channel state information (CSI) report based on the measurement, and transmitting the CSI report. The information about the measurement region includes at least two of (i) a set of physical resource blocks (PRBs), (ii) a set of time slots, and (iii) a set of CSI-reference signal (RS) resources. P×O f =Q, where Q is a number of precoding dimensions, O f =a number of precoding dimensions per port associated with the CSI report, and O f is fixed, configured, or reported by the UE via UE capability reporting.

Claims (59)

1. A user equipment (UE) comprising:

a transceiver configured to receive information about a measurement region that is associated with P ports, where P ≥1; and

a processor operably coupled to the transceiver, the processor, based on the information, configured to:

identity the measurement region,

measure the P ports associated with the measurement region, and

determine a channel state information (CSI) report based on the measurement;

wherein the transceiver is further configured to transmit the CSI report,

wherein the information about the measurement region includes at least two of (i) a set of physical resource blocks (PRBs), (ii) a set of time slots, and (iii) a set of CSI-reference signal (RS) resources, and

wherein:

P×O f =Q, where Q is a number of precoding dimensions,

O f =a number of precoding dimensions per port associated with the CSI report, and

O f is fixed, configured, or reported by the UE via UE capability reporting.

2. The UE of claim 1 , wherein the P ports are measured (i) within each PRB of the set of PRBs and (ii) across the set of time slots.

3. The UE of claim 2 , wherein the set of time slots corresponds to one of:

a multi-shot transmission of a single CSI-RS resource in the set of time slots with a separation between two consecutive time slots configured to the UE, and

a one-shot transmission of multiple CSI-RS resources that are separated in time and included in the set of CSI-RS resources.

4. The UE of claim 1 , wherein the P ports are measured within a frequency domain (FD) unit and across the set of time slots, where the FD unit comprises multiple PRBs from the set of PRBs.

5. The UE of claim 1 , wherein the P ports are measured within a frequency domain (FD) unit and across the set of CSI-RS resources.

6. The UE of claim 1 , wherein the P ports are measured across the set of time slots and the set of CSI-RS resources, where the set of CSI-RS resources are measured within each PRB of the set of PRBs.

7. The UE of claim 1 , wherein the P ports are measured across the set of PRBs, the set of time slots, and the set of CSI-RS resources, where the set of CSI-RS resources are measured within each PRB of the set of PRBs.

8. The UE of claim 1 , wherein:

the measurement region is associated with a port density d, where a value of the port density is configured such that Q precoding dimensions are conveyed based on the P ports and where P≠Q,

the port density d is one of a set of values, and

the set of values is reported by the UE as a UE capability reporting.

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

receiving information about a measurement region that is associated with P ports, where P≥10;

based on the information,

identifying the measurement region,

measuring the P ports associated with the measurement region, and

determining a channel state information (CSI) report based on the measurement; and

transmitting the CSI report,

wherein the information about the measurement region includes at least two of (i) a set of physical resource blocks (PRBs), (ii) a set of time slots, and (iii) a set of CSI-reference signal (RS) resources, and

wherein:

P×O f =Q, where Q is a number of precoding dimensions,

O f =a number of precoding dimensions per port associated with the CSI report, and

O f is fixed, configured, or reported by the UE via UE capability reporting.

10. The method of claim 9 , wherein the P ports are measured (i) within each PRB of the set of PRBs and (ii) across the set of time slots.

11. The method of claim 10 , wherein the set of time slots corresponds to one of:

a multi-shot transmission of a single CSI-RS resource in the set of time slots with a separation between two consecutive time slots configured to the UE, and

a one-shot transmission of multiple CSI-RS resources that are separated in time and included in the set of CSI-RS resources.

12. The method of claim 9 , wherein the P ports are measured within a frequency domain (FD) unit and across the set of time slots, where the FD unit comprises multiple PRBs from the set of PRBs.

13. The method of claim 9 , wherein the P ports are measured within a frequency domain (FD) unit and across the set of CSI-RS resources.

14. The method of claim 9 , wherein the P ports are measured across the set of time slots and the set of CSI-RS resources, where the set of CSI-RS resources are measured within each PRB of the set of PRBs.

15. The method of claim 9 , wherein the P ports are measured across the set of PRBs, the set of time slots, and the set of CSI-RS resources, where the set of CSI-RS resources are measured within each PRB of the set of PRBs.

16. A base station (BS) comprising:

a processor; and

a transceiver operably coupled to the processor, the transceiver configured to:

transmit information about a measurement region that is associated with P ports, where P≥17; and

receive a channel state information (CSI) report that is based on the P ports associated with the measurement region,

wherein the information about the measurement region includes at least two of (i) a set of physical resource blocks (PRBs), (ii) a set of time slots, and (iii) a set of CSI-reference signal (RS) resources, and

wherein:

P×O f =Q, where Q is a number of precoding dimensions,

O f =a number of precoding dimensions per port associated with the CSI report, and

O f is fixed, configured, or reported by a user equipment (UE) via UE capability reporting.

17. The BS of claim 16 , wherein the P ports are measured (i) within each PRB of the set of PRBs and (ii) across the set of time slots.

18. The BS of claim 17 , wherein the set of time slots corresponds to one of:

a multi-shot transmission of a single CSI-RS resource in the set of time slots with a separation between two consecutive time slots configured to the UE, and

a one-shot transmission of multiple CSI-RS resources that are separated in time and included in the set of CSI-RS resources.

19. The BS of claim 16 , wherein the P ports are measured within a frequency domain (FD) unit and across the set of time slots, where the FD unit comprises multiple PRBs from the set of PRBs.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 29, 2023
From: RAHMAN, MD. SAIFUR; ONGGOSANUSI, EKO
To: SAMSUNG ELECTRONICS CO., LTD.
Reel/Frame 065985/0541 →
Continuity (4)
Continuation 17138572 · Dec 30, 2020
Provisional Application 63112346 · Nov 11, 2020
Provisional Application 62956973 · Jan 3, 2020
Related Publication 20240154668A1 · May 9, 2024
References Cited (32)
US 9967012B2 · Onggosanusi · 2018 [cited by applicant]
US 11901996B2 · Ramireddy · 2024 [cited by examiner]
US 20160359538A1 · Onggosanusi · 2016 [cited by examiner]
US 20170244459A1 · Chen · 2017 [cited by applicant]
US 20170279509A1 · Rahman · 2017 [cited by applicant]
US 20180219603A1 · Park · 2018 [cited by examiner]
US 20190007112A1 · Faxer · 2019 [cited by applicant]
US 20190149212A1 · Wang · 2019 [cited by examiner]
US 20190280750A1 · Rahman · 2019 [cited by applicant]
US 20190334587A1 · Rahman · 2019 [cited by applicant]
US 20200067583A1 · Shin · 2020 [cited by applicant]
US 20210409991A1 · Park · 2021 [cited by applicant]
US 20220006496A1 · Park · 2022 [cited by applicant]
US 20220393736A1 · Park · 2022 [cited by applicant]
WO 2011088403A1 · 2011 [cited by applicant]
WO 2016163843A1 · 2016 [cited by applicant]
WO WO2022150484A1 · 2022 [cited by examiner]
“3rd Generation Partnership Project; Technical Specification Group Radio Access Network; Evolved Universal Terrestrial Radio Access (E-UTRA); Physical channels and modulation (Release 16)”, 3GPP TS 36.211 V16.3.0, Sep. … [cited by applicant]
“3rd Generation Partnership Project; Technical Specification Group Radio Access Network; Evolved Universal Terrestrial Radio Access (E-UTRA); Multiplexing and channel coding (Release 16)”, 3GPP TS 36.212 V16.3.0, Sep. 2… [cited by applicant]
“3rd Generation Partnership Project; Technical Specification Group Radio Access Network; Evolved Universal Terrestrial Radio Access (E-UTRA); Physical layer procedures (Release 16)”, 3GPP TS 36.213 V16.3.0, Sep. 2020, 5… [cited by applicant]
“3rd Generation Partnership Project; Technical Specification Group Radio Access Network; Evolved Universal Terrestrial Radio Access (E-UTRA); Medium Access Control (MAC) protocol specification (Release 16)”, 3GPP TS 36.… [cited by applicant]
“3rd Generation Partnership Project; Technical Specification Group Radio Access Network; Evolved Universal Terrestrial Radio Access (E-UTRA); Radio Resource Control (RRC); Protocol specification (Release 16)”, 3GPP TS 3… [cited by applicant]
“3rd Generation Partnership Project; Technical Specification Group Services and System Aspects; Feasibility Study on New Services and Markets Technology Enablers; Stage 1 (Release 14)”, 3GPP TR 22.891 V14.2.0, Sep. 2016… [cited by applicant]
“3rd Generation Partnership Project; Technical Specification Group Radio Access Network; NR; Multiplexing and channel coding (Release 16)”, 3GPP TS 38.212 V16.3.0, Sep. 2020, 497 pages. [cited by applicant]
“3rd Generation Partnership Project; Technical Specification Group Radio Access Network; NR; Physical layer procedures for control (Release 16)”, 3GPP TS 38.213 V16.3.0, Sep. 2020, 179 pages. [cited by applicant]
“3rd Generation Partnership Project; Technical Specification Group Radio Access Network; NR; Physical layer procedures for data (Release 16)”, 3GPP TS 38.214 V16.3.0, Sep. 2020, 166 pages. [cited by applicant]
International Search Report and Written Opinion of the International Searching Authority dated Apr. 15, 2021 in connection with International Application No. PCT/KR2020/019493, 10 pages. [cited by applicant]
3GPP TS 38.214 V15.7.0 (Sep. 2019), Technical Specification, 3rd Generation Partnership Project; Technical Specification Group Radio Access Network; NR; Physical layer procedures for data (Release 15), Sep. 2019, 106 pa… [cited by applicant]
Extended European Search Report dated Nov. 4, 2022 regarding Application No. 20909452.3, 12 pages. [cited by applicant]
“5G; NR; Physical layer procedures for data (3GPP TS 38.214 version 15.8.0 Release 15)”, ETSI TS 138 214 V15.8.0, Jan. 2020, 109 pages. [cited by applicant]
Ericsson, “On CSI enhancements for MU-MIMO”, 3GPP TSG RAN WG1 Meeting Ad-Hoc Meeting 1901, R1-1900757, Jan. 2019, 12 pages. [cited by applicant]
Fraunhofer IIS et al., “Enhancements on Type-II CSI reporting”, 3GPP TSG-RAN WG1 AH-1901, R1-1901305, Jan. 2019, 18 pages. [cited by applicant]