specviewer.org TS 38.331 ASN.1 index QCL-Info

QCL-Info

RRC IE · TS 38.331 v19.4.0 (2026-09) · clause 6.3.2, in the TCI-State clause

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

First seen v15.1.0 (2018-04) · Last changed v17.1.0 (2022-07)

Definition

QCL-Info ::=                        SEQUENCE {
    cell                                ServCellIndex                                               OPTIONAL,   -- Need R
    bwp-Id                              BWP-Id                                                      OPTIONAL, -- Cond CSI-RS-Indicated
    referenceSignal                     CHOICE {
        csi-rs                              NZP-CSI-RS-ResourceId,
        ssb                                 SSB-Index
    },
    qcl-Type                            ENUMERATED {typeA, typeB, typeC, typeD},
    ...
}

Fields (6)

FieldDescription
cell
ServCellIndex · OPTIONAL Need R
The UE's serving cell in which the referenceSignal is configured. If the field is absent, the referenceSignal is configured in the serving cell in which the TCI-State is applied by the UE. The RS can be located on a serving cell other than the serving cell for which the TCI-State is applied by the UE only if the qcl-Type is configured as typeC or typeD . If the referenceSignal is set to csi-rs and unifiedTCI-StateType is configured, either both cell and bwp-Id are present or both cell and bwp-Id are absent. See TS 38.214 [19] clause 5.1.5.
bwp-Id
BWP-Id · OPTIONAL Cond CSI-RS-Indicated
The DL BWP which the RS is located in. If the field is absent, the RS is located in the DL BWP in which the TCI-State is applied by the UE.
referenceSignal
CHOICE {
Reference signal with which quasi-collocation information is provided as specified in TS 38.214 [19] clause 5.1.5.
csi-rs
NZP-CSI-RS-ResourceId
ssb
SSB-Index
qcl-Type
ENUMERATED {typeA, typeB, typeC, typeD}
QCL type as specified in TS 38.214 [19] clause 5.1.5.

Used by (1)

Uses (4)

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