DLInformationTransfer

RRC message · TS 38.331 v19.4.0 (2026-09) · clause 6.2.2

DLInformationTransfer is an RRC message of 3GPP TS 38.331 (38331), the 5G NR Radio Resource Control (RRC) protocol.

First seen v15.3.0 (2018-09) · Last changed v18.1.0 (2024-04), in DLInformationTransfer-v1800-IEs

Definition

The DLInformationTransfer message is used for the downlink transfer of NAS dedicated information, timing information for the 5G internal system clock, or IAB-DU specific F1-C related information.

DLInformationTransfer ::=           SEQUENCE {
    rrc-TransactionIdentifier           RRC-TransactionIdentifier,
    criticalExtensions                  CHOICE {
        dlInformationTransfer           DLInformationTransfer-IEs,
        criticalExtensionsFuture            SEQUENCE {}
    }
}

Fields (4)

Field	Description
rrc-TransactionIdentifier RRC-TransactionIdentifier
criticalExtensions CHOICE {
dlInformationTransfer DLInformationTransfer-IEs
criticalExtensionsFuture SEQUENCE {}

Fields of DLInformationTransfer-IEs (3)

Field	Description
dedicatedNAS-Message DedicatedNAS-Message · OPTIONAL Need N
lateNonCriticalExtension OCTET STRING · OPTIONAL
nonCriticalExtension DLInformationTransfer-v1610-IEs · OPTIONAL

Fields of DLInformationTransfer-v1610-IEs (2)

Field	Description
referenceTimeInfo-r16 ReferenceTimeInfo-r16 · OPTIONAL Need N since v16.1.0
nonCriticalExtension DLInformationTransfer-v1700-IEs · OPTIONAL since v16.1.0

Fields of DLInformationTransfer-v1700-IEs (5)

Field	Description
dedicatedInfoF1c-r17 DedicatedInfoF1c-r17 · OPTIONAL Need N since v17.0.0
rxTxTimeDiff-gNB-r17 RxTxTimeDiff-r17 · OPTIONAL Need N since v17.0.0	Indicates the Rx-Tx time difference measurement at the gNB (see clause 5.2.3, TS 38.215 [9]). Upon receiving this field, the UE calculates the propagation delay based on the RTT-based PDC mechanism method as described in TS 38.300 [2]. The network does not configure this field, if the UE is configured with ta-PDC with value activate .
ta-PDC-r17 ENUMERATED {activate,deactivate} · OPTIONAL Need N since v17.0.0	Indicates whether the UE-side TA-based propagation delay compensation (PDC) is activated or de-activated. The network does not configure this field with activate, if the field rxTxTimeDiff-gNB is configured.
sib9Fallback-r17 ENUMERATED {true} · OPTIONAL Need N since v17.0.0	Indicates that the UE fallbacks to receive referenceTimeInfo in SIB9.
nonCriticalExtension DLInformationTransfer-v1800-IEs · OPTIONAL since v17.0.0

Fields of DLInformationTransfer-v1800-IEs (5)

Field	Description
eventID-TSS-r18 INTEGER(0..63) · OPTIONAL Cond ClockQualityDetailsLevel since v18.0.0	This field indicates the status of the 5G access stratum time distribution parameter Clock Quality Reporting Control Information as defined in TS 23.501 [32].
clockQualityDetailsLevel-r18 CHOICE { · OPTIONAL Need N since v18.0.0	This field indicates the clock quality reporting control information as defined in TS 23.501 [32].
clockQualityMetrics-r18 ClockQualityMetrics-r18 since v18.0.0
clockQualityAcceptanceStatus-r18 ENUMERATED {acceptable, notAcceptable} since v18.0.0
nonCriticalExtension SEQUENCE {} · OPTIONAL since v18.0.0

Used by (1)

DL-DCCH-MessageType