CSI-ResourceConfig

RRC IE · TS 38.331 v19.4.0 (2026-09) · clause 6.3.2

CSI-ResourceConfig is an RRC information element of 3GPP TS 38.331 (38331), the 5G NR Radio Resource Control (RRC) protocol.

First seen v15.0.0 (2018-01) · Last changed v19.0.0 (2025-10)

Definition

The IE CSI-ResourceConfig defines a group of one or more NZP-CSI-RS-ResourceSet , CSI-IM-ResourceSet , CSI-SSB-ResourceSet, CLI-RSSI-MeasResourceSet and/or SRS-RSRP-MeasResourceSet .

CSI-ResourceConfig ::=      SEQUENCE {
    csi-ResourceConfigId        CSI-ResourceConfigId,
    csi-RS-ResourceSetList      CHOICE {
        nzp-CSI-RS-SSB              SEQUENCE {
            nzp-CSI-RS-ResourceSetList  SEQUENCE (SIZE (1..maxNrofNZP-CSI-RS-ResourceSetsPerConfig)) OF NZP-CSI-RS-ResourceSetId
            OPTIONAL, -- Need R
            csi-SSB-ResourceSetList     SEQUENCE (SIZE (1..maxNrofCSI-SSB-ResourceSetsPerConfig)) OF CSI-SSB-ResourceSetId  OPTIONAL  -- Need R
        },
        csi-IM-ResourceSetList      SEQUENCE (SIZE (1..maxNrofCSI-IM-ResourceSetsPerConfig)) OF CSI-IM-ResourceSetId
    },
    bwp-Id                      BWP-Id,
    resourceType                ENUMERATED { aperiodic, semiPersistent, periodic },
    ...,
    [[
        csi-SSB-ResourceSetListExt-r17      CSI-SSB-ResourceSetId                                                  OPTIONAL  -- Need R
    ]],
    [[
        cli-MeasResourceSetList-r19       CHOICE {
            cli-RSSI-MeasResourceSetList-r19  SEQUENCE (SIZE (1..maxNrofCLI-RSSI-MeasResourceSetsPerConfig-r19)) OF CLI-RSSI-MeasResourceSetId-r19,
            srs-RSRP-MeasResourceSetList-r19  SEQUENCE (SIZE (1..maxNrofSRS-RSRP-MeasResourceSetsPerConfig-r19)) OF SRS-RSRP-MeasResourceSetId-r19,
            ...
        }                                                                                                          OPTIONAL -- Need R
    ]]
}

Fields (12)

Field	Description
csi-ResourceConfigId CSI-ResourceConfigId	Used in CSI-ReportConfig to refer to an instance of CSI-ResourceConfig.
csi-RS-ResourceSetList CHOICE { since v15.1.0
nzp-CSI-RS-SSB SEQUENCE { since v15.1.0
nzp-CSI-RS-ResourceSetList SEQUENCE (SIZE (1..maxNrofNZP-CSI-RS-ResourceSetsPerConfig)) OF NZP-CSI-RS-ResourceSetId · OPTIONAL Need R since v15.1.0	List of references to NZP CSI-RS resources used for beam measurement and reporting in a CSI-RS resource set. If resourceType is set to 'aperiodic', the network configures up to maxNrofNZP-CSI-RS-ResourceSetsPerConfig resource sets. If resourceType is is set to 'periodic' or 'semiPersistent' and groupBasedBeamReporting-v1710 is not configured in IE CSI-ReportConfig , the network configures 1 resource set. If resourceType is set to 'periodic' or 'semiPersistent' and groupBasedBeamReporting-v1710 is configured, the network configures 2 resource sets, which may be two NZP CSI-RS resource sets (see TS 38.214 [19], clause 5.2.1.2 and 5.2.1.4.2). In this case, in TS 38.212 [17] Table 6.3.1.1.2-8B, the first resource set is indicated by a resource set indicator set to 0 and the second resource set by a resource set indicator set to 1. If resourceType is set to 'periodic' and reportQuantity is set to 'TDCP', the network configures up to 3 resource sets, see TS 38.214 [19] clause 5.2.1.2.
csi-SSB-ResourceSetList SEQUENCE (SIZE (1..maxNrofCSI-SSB-ResourceSetsPerConfig)) OF CSI-SSB-ResourceSetId · OPTIONAL Need R since v15.1.0	List of references to SSB resources used for CSI measurement and reporting in a CSI-RS resource set (see TS 38.214 [19], clause 5.2.1.2). The csi-SSB-ResourceSetListExt provides additional references and can only be configured if csi-SSB-ResourceSetList is configured and groupBasedBeamReporting-v1710 is configured in the CSI-ReportConfig that indicates this CSI-ResourceConfig as resourcesForChannelMeasurement . If groupBasedBeamReporting-v1710 is configured in the IE CSI-ReportConfig that indicates this CSI-ResourceConfig as resourcesForChannelMeasurement , the network configures 2 resource sets, which may be two CSI SSB resource sets (see TS 38.214 [19], clause 5.2.1.2 and 5.2.1.4.2). In this case, in TS 38.212 [17] Table 6.3.1.1.2-8B, the first resource set is indicated by a resource set indicator set to 0 and the second resource set by a resource set indicator set to 1.
csi-IM-ResourceSetList SEQUENCE (SIZE (1..maxNrofCSI-IM-ResourceSetsPerConfig)) OF CSI-IM-ResourceSetId since v15.1.0	List of references to CSI-IM resources used for CSI measurement and reporting in a CSI-RS resource set. Contains up to maxNrofCSI-IM-ResourceSetsPerConfig resource sets if resourceType is 'aperiodic' and 1 otherwise (see TS 38.214 [19], clause 5.2.1.2).
bwp-Id BWP-Id since v15.1.0	The DL BWP which the CSI-RS or CLI measurement resources associated with this CSI-ResourceConfig are located in (see TS 38.214 [19], clause 5.2.1.2.
resourceType ENUMERATED { aperiodic, semiPersistent, periodic }	Time domain behavior of resource configuration (see TS 38.214 [19], clause 5.2.1.2). It does not apply to resources provided in the csi-SSB-ResourceSetList . If the associated csi-ResourceConfigId is included in CSI-LoggedMeasurementConfig , it is set to 'periodic'.
csi-SSB-ResourceSetListExt-r17 CSI-SSB-ResourceSetId · OPTIONAL Need R since v17.0.0	List of references to SSB resources used for CSI measurement and reporting in a CSI-RS resource set (see TS 38.214 [19], clause 5.2.1.2). The csi-SSB-ResourceSetListExt provides additional references and can only be configured if csi-SSB-ResourceSetList is configured and groupBasedBeamReporting-v1710 is configured in the CSI-ReportConfig that indicates this CSI-ResourceConfig as resourcesForChannelMeasurement . If groupBasedBeamReporting-v1710 is configured in the IE CSI-ReportConfig that indicates this CSI-ResourceConfig as resourcesForChannelMeasurement , the network configures 2 resource sets, which may be two CSI SSB resource sets (see TS 38.214 [19], clause 5.2.1.2 and 5.2.1.4.2). In this case, in TS 38.212 [17] Table 6.3.1.1.2-8B, the first resource set is indicated by a resource set indicator set to 0 and the second resource set by a resource set indicator set to 1.
cli-MeasResourceSetList-r19 CHOICE { · OPTIONAL Need R since v19.0.0	List of references to SRS-RSRP measurement resource set(s) or CLI-RSSI measurement resource set(s) used for L1 SRS-RSRP measurement and reporting or L1 CLI-RSSI measurement and reporting (see TS 38.214 [19], clause 5). Value cli-RSSI-MeasResourceSetList contains up to maxNrofCLI-RSSI-MeasResourceSetsPerConfig resource sets if resourceType is ' aperiodic ' and 1 otherwise. Value srs-RSRP-MeasResourceSetList contains up to maxNrofSRS-RSRP-MeasResourceSetsPerConfig resource sets if resourceType is ' aperiodic ' and 1 otherwise. If this field is configured, the UE shall ignore the field csi-RS-ResourceSetList .
cli-RSSI-MeasResourceSetList-r19 SEQUENCE (SIZE (1..maxNrofCLI-RSSI-MeasResourceSetsPerConfig-r19)) OF CLI-RSSI-MeasResourceSetId-r19 since v19.0.0
srs-RSRP-MeasResourceSetList-r19 SEQUENCE (SIZE (1..maxNrofSRS-RSRP-MeasResourceSetsPerConfig-r19)) OF SRS-RSRP-MeasResourceSetId-r19 since v19.0.0

Used by (1)

CSI-MeasConfig

CSI-ResourceConfig

Definition

Fields (12)

Used by (1)

Uses (12)

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