IP Library › Granted Patent US 12,335,761
Granted Patent B2
US 12,335,761 · App. 17/361,969 · Granted Jun 17, 2025

Method and apparatus for indicating measurement purpose of channel state information and system

Inventors: Zhe Chen (Beijing, CN); Lei Zhang (Beijing, CN); Xin Wang (Beijing, CN)
Assignee: FUJITSU LIMITED
H04W24/10H04W24/08
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Quick Facts
Patent No.
US 12,335,761
App. No.
17/361,969
Granted
Jun 17, 2025
Kind
B2
Abstract

A method and apparatus for indicating a measurement purpose of channel state information (CSI) and a communication system. The method includes: a terminal equipment receives first indication information transmitted by a network device, the first indication information indicating a measurement purpose of a first channel state information (CSI) measurement resource set of the terminal equipment; and the terminal equipment determines the measurement purpose of the first CSI measurement resource set according to the first indication information. A network device and the terminal equipment may have a common understanding of a purpose of the same CSI measurement resource.

Claims (21)

1. An apparatus for determining a resource occupied for channel state information calculation, configured in a terminal equipment, the apparatus comprising:

a receiver configured to receive indication information transmitted by a network device, the indication information indicating that a CSI (Channel State Information) measurement resource set only comprises channel measurement resource(s) which is used as measurement resource(s), and the indication information further indicating that the first CSI report set needs to perform CSI report, and that a content of the CSI report is related to L1-SINR (layer 1-Signal to Interference Noise Ratio); and

processor circuitry configured to determine, according to the indication information, a time (T) and a number (K) of CSI processing units (CPUs) occupied by CSI report or CSI measurement to which the first CSI report set corresponds, wherein the number, K, of CSI processing units occupied by CSI report or CSI measurement to which the first CSI report set corresponds is 1.

2. The apparatus according to claim 1 , wherein,

in response to determining that a CSI channel measurement resource set associated with the first CSI report set only comprises SSBs (Synchronization Signal Blocks), K s is the number of SSB resources;

in response to determining that a CSI channel measurement resource set associated with the first CSI report set only comprises CSI-RSs (Channel State Information-Reference Signals), K s is the number of CSI-RS resources; or

in response to determining that a CSI channel measurement resource set associated with the first CSI report set comprises CSI-RSs and SSBs, K s is a maximum value of the number of CSI-RS resources and the number of SSB resources.

3. The apparatus according to claim 1 , wherein,

in response to determining that the terminal equipment needs to perform CSI report, the time (T) of CSI processing units (CPUs) occupied by CSI report to which the first CSI report set corresponds is at least one of the following:

in response to determining that the CSI report is aperiodic CSI report, the time (T) of CSI processing units (CPUs) occupied by the CSI report is: from a first or a last symbol after downlink control information triggering the CSI report to a first or a last symbol of an uplink shared channel or an uplink control channel carrying the CSI report;

in response to determining that the CSI report is periodic CSI report, the time (T) of CSI processing units (CPUs) occupied by the CSI report is: from a first or a last symbol of a CSI measurement opportunity related to the CSI report to a first or a last symbol of an uplink shared channel or an uplink control channel carrying the CSI report;

in response to determining that the CSI report is semi-persistent CSI report carried by an uplink shared channel and is initially triggered by downlink control information, the time (T) of CSI processing units (CPUs) occupied by the CSI report is: from a first or a last symbol after the downlink control information triggering the CSI report to a first or a last symbol of the uplink shared channel carrying the CSI report; and

in response to determining that the CSI report is semi-persistent CSI report carried by an uplink shared channel and is not initially triggered by downlink control information, the time (T) of CSI processing units (CPUs) occupied by the CSI report is: from a first or a last symbol of a CSI measurement opportunity related to the CSI report to a first or a last symbol of the uplink shared channel carrying the CSI report.

4. The apparatus according to claim 1 , wherein,

in response to determining that the terminal equipment needs not to perform CSI report, the time (T) of CSI processing units (CPUs) occupied by CSI measurement to which the first CSI report set corresponds is at least one of the following:

in response to determining that a time domain behavior to which the CSI report set corresponds is aperiodic, the time (T) of CSI processing units (CPUs) occupied by the CSI measurement to which the CSI report set corresponds is: from a first or a last symbol after the downlink control information triggering the CSI report set to a maximum value of x+Z 0 and y+Z 1 ;

in response to determining that a time domain behavior to which the CSI report set corresponds is periodic, the time (T) of CSI processing units (CPUs) occupied by the CSI measurement to which the CSI report set corresponds is: from a first symbol of an earlier measurement opportunity in measurement opportunities of the CSI measurement resource related to the CSI report set in a transmission opportunity related to the CSI report set to y′+Z 1 ;

in response to determining that a time domain behavior to which the CSI report set corresponds is semi-persistent and initial CSI resource measurement to which the CSI report set corresponds is triggered by downlink control information, for the initial CSI resource measurement, the time (T) of CSI processing units (CPUs) occupied by the CSI measurement to which the CSI report set corresponds is: from a first symbol after the downlink control information triggering the CSI report set to a maximum value of x+Z 0 and y+Z 1 ;

in response to determining that a time domain behavior to which the CSI report set corresponds is semi-persistent but initial CSI resource measurement to which the CSI report set corresponds is not triggered by downlink control information, the time (T) of CSI processing units (CPUs) occupied by the CSI measurement to which the CSI report set corresponds is: from a first symbol of an earliest measurement opportunity in measurement opportunities of the CSI measurement resource related to the CSI report set to y′+Z 1 ; and

in response to determining that a time domain behavior to which the CSI report set corresponds is semi-persistent and initial CSI resource measurement to which the CSI report set corresponds is triggered by downlink control information, for other CSI resource measurement than the initial CSI resource measurement, the time (T) of CSI processing units (CPUs) occupied by the CSI measurement to which the CSI report set corresponds is: from a first symbol of an earliest measurement opportunity in measurement opportunities of the CSI measurement resource related to the CSI report set to y′+Z 1 ;

where, x is the first or the last symbol after the downlink control information triggering the CSI report set, y is a last symbol of a latest CSI channel measurement resource or interference measurement resource related to the CSI report set, y′ is a first symbol of a latest measurement opportunity in transmission opportunities of the CSI measurement resource related to the CSI report set in the transmission opportunities, Z 0 is a CSI calculation time related to CSI measurement or report triggered by control information, and Z 1 is a CSI calculation time related to the CSI measurement resource.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 5, 2026
From: FUJITSU LIMITED
To: 1FINITY INC.
Reel/Frame 074197/0244 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 29, 2021
From: CHEN, ZHE; ZHANG, LEI; WANG, XIN
To: FUJITSU LIMITED
Reel/Frame 056705/0475 →
Continuity (2)
Continuation PCTCN2019071037 · Jan 9, 2019
Related Publication 20210337415A1 · Oct 28, 2021
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