# US 2025/0096986 A1 · Method and device for transmitting/receiving channel state information in wireless communication system

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- Number: US 2025/0096986 A1
- Document ID: US20250096986A1
- Status: Published application
- Kind: A1
- Application number: 18/290,682
- Filed: 2022-07-18
- Published: 2025-03-20
- Earliest claimed: 2021-07-20
- Assignees: LG Electronics Inc.
- Applicants: LG Electronics Inc.
- Inventors: Hyungtae KIM; Jiwon KANG; Seongwon GO
- Web page: https://patentgrep.com/patent/US20250096986A1

## CPC

- H04L 5/00: Arrangements affording multiple use of the transmission path
- H04W 24/10: Scheduling measurement reports {; Arrangements for measurement reports}
- H04B 7/024: Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems
- H04B 7/06: at the transmitting station
- H04B 7/0626: {Channel coefficients, e.g. channel state information [CSI]}
- H04B 7/063: {Parameters other than those covered in groups H04B7/0623 - H04B7/0634, e.g. channel matrix rank or transmit mode selection}
- H04B 7/0632: {Channel quality parameters, e.g. channel quality indicator [CQI]}
- H04B 7/0639: {Using selective indices, e.g. of a codebook, e.g. pre-distortion matrix index [PMI] or for beam selection}
- H04B 17/24: with feedback of measurements to the transmitter
- H04B 17/252: {measuring signals from different transmission points or directions of arrival, e.g. in multi RAT or dual connectivity}
- H04L 5/0023: {Time-frequency-space}
- H04L 5/0048: {Allocation of pilot signals, i.e. of signals known to the receiver (allocation of control signalling H04L5/0053; use of control signalling H04L5/0091)}
- H04L 5/005: {of common pilots, i.e. pilots destined for multiple users or terminals}
- H04L 5/0057: {Physical resource allocation for CQI}
- H04L 5/0091: {Signalling for the administration of the divided path, e.g. signalling of configuration information}
- H04W 8/22: Processing or transfer of terminal data, e.g. status or physical capabilities
- H04W 24/08: Testing, {supervising or monitoring} using real traffic
- H04W 72/046: {the resource being in the space domain, e.g. beams}
- H04W 8/24: Transfer of terminal data
- H04W 84/02: Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W 88/02: Terminal devices
- H04W 88/08: Access point devices
- H04W 92/02: Inter-networking arrangements
- H04W 92/10: between terminal device and access point, i.e. wireless air interface
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)
- H04B: TRANSMISSION

## Abstract

A method and a device for transmitting/receiving channel state information (CSI) in a wireless communication system are disclosed. A method by which a terminal transmits CSI in a wireless communication system, according to an embodiment of the present disclosure, may comprise the steps of: receiving configuration information related to CSI reporting; receiving a CSI-reference signal (RS) from at least one CSI-RS resource corresponding to the configuration information; and transmitting the CSI on the basis of at least one CSI-RS and the configuration information.

## Claims

### Claim 1

A method for transmitting channel state information (CSI) by a user equipment (UE) in a wireless communication system, the method comprising:
receiving configuration information related to CSI reporting;
receiving a CSI-RS on at least one CSI-reference signal (RS) resource corresponding to the configuration information; and
transmitting CSI based on the at least one CSI-RS and the configuration information,
wherein, based a specific CSI-RS resource among the at least one CSI-RS resource being configured as one channel measurement resource (CMR), CSI for the one CMR is calculated based on a first port group and a second port group of the specific CSI-RS resource, and
wherein the first port group and the second port group are associated with a first spatial parameter and a second spatial parameter, respectively.

### Claim 2 (depends on 1)

The method of claim 1,
wherein CSI calculation for the one CMR occupies a number of CSI processing units (CPUs) exceeding 1.

### Claim 3 (depends on 1)

The method of claim 1,
further comprising, transmitting UE capability information including information on a number of active CSI-RS resources,
wherein, based on the UE capability information being related to the specific CSI-RS resource, a number of active CSI-RS resources corresponding to the specific CSI-RS is counted in excess of 1.

### Claim 4 (depends on 1)

The method of claim 1,
further comprising, transmitting UE capability information including information on a maximum number of downlink RS resources in at least one of an active TCI state or active spatial relation info,
wherein, based on the UE capability information being related to the specific CSI-RS resource, a number of the specific CSI-RS resource is counted in excess of 1.

### Claim 5 (depends on 1)

The method of claim 1,
further comprising, transmitting UE capability information including information on a number of supports of active TCI states for each bandwidth part,
wherein, based on the UE capability information being related to the specific CSI-RS resource, a number of active TCI states associated with the specific CSI-RS is counted in excess of 1.

### Claim 6 (depends on 1)

The method of claim 1,
wherein, based on that a number of CPUs for CSI based on the at least one CSI-RS resource is greater than a remaining number of CPUs of the UE, CSI reporting associated with the CSI based on the at least one CSI-RS resource is dropped.

### Claim 7 (depends on 6)

The method of claim 6,
wherein, based on a number of CPUs for CSI based on the specific CSI-RS resource being less than or equal to a remaining CPU number of the UE, CSI for the one CMR is only calculated and reported.

### Claim 8 (depends on 1)

The method of claim 1,
wherein the first spatial parameter and the second spatial parameter correspond to TCI state or spatial relation info.

### Claim 9 (depends on 1)

The method of claim 1,
wherein each of the first spatial parameter and the second spatial parameter includes at least of a quasi co-located (QCL) RS corresponding to QCL type A or a QCL RS corresponding to QCL type D.

### Claim 10 (depends on 1)

The method of claim 1,
wherein the first spatial parameter and the second spatial parameter are associated with different control resource set (CORESET) pool indexes.

### Claim 11

A user equipment (UE) for performing downlink reception or uplink transmission in a wireless communication system, the UE comprising:
at least one transceiver; and
at least one processor coupled with the at least one transceiver,
wherein the at least one processor is configured to:
receive configuration information related to CSI reporting;
receive a CSI-RS on at least one CSI-reference signal (RS) resource corresponding to the configuration information; and
transmit CSI based on the at least one CSI-RS and the configuration information,
wherein, based a specific CSI-RS resource among the at least one CSI-RS resource being configured as one channel measurement resource (CMR), CSI for the one CMR is calculated based on a first port group and a second port group of the specific CSI-RS resource, and
wherein the first port group and the second port group are associated with a first spatial parameter and a second spatial parameter, respectively.

### Claim 12

(canceled)

### Claim 13

A base station for receiving channel state information (CSI) in a wireless communication system, the BS comprising:
at least one transceiver; and
at least one processor coupled with the at least one transceiver,
wherein the at least one processor is configured to:
transmit configuration information related to CSI reporting;
transmit a CSI-RS on at least one CSI-reference signal (RS) resource corresponding to the configuration information; and
receive CSI based on the at least one CSI-RS and the configuration information,
wherein, based a specific CSI-RS resource among the at least one CSI-RS resource being configured as one channel measurement resource (CMR), CSI for the one CMR is calculated based on a first port group and a second port group of the specific CSI-RS resource, and
wherein the first port group and the second port group are associated with a first spatial parameter and a second spatial parameter, respectively.

### Claim at position 14

14-15. (canceled)