specviewer.org TS 38.331 ASN.1 index LTM-TCI-Info-r18

LTM-TCI-Info (LTM-TCI-Info-r18)

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

LTM-TCI-Info-r18 is an RRC information element of 3GPP TS 38.331 (38331), the 5G NR Radio Resource Control (RRC) protocol.

First seen v18.1.0 (2024-04) · Not changed since

Definition

The IE LTM-TCI-Info is used to configure TCI related information for an LTM candidate configuration to be used during activation of TCI state(s) and/or upon the reception of the LTM Cell Switch procedure.

LTM-TCI-Info-r18 ::=             SEQUENCE {
    ltm-DL-OrJointTCI-StateToAddModList-r18        SEQUENCE (SIZE (1..maxNrofCandidateTCI-State-r18)) OF CandidateTCI-State-r18
    OPTIONAL,    -- Need N
    ltm-DL-OrJointTCI-StateToReleaseList-r18       SEQUENCE (SIZE (1..maxNrofCandidateTCI-State-r18)) OF TCI-StateId
    OPTIONAL,    -- Need N
    ltm-UL-TCI-StateToAddModList-r18               SEQUENCE (SIZE (1..maxNrofCandidateUL-TCI-r18)) OF CandidateTCI-UL-State-r18
    OPTIONAL,    -- Need N
    ltm-UL-TCI-StateToReleaseList-r18              SEQUENCE (SIZE (1.. maxNrofCandidateUL-TCI-r18)) OF TCI-UL-StateId-r17
    OPTIONAL,    -- Need N
    ltm-NZP-CSI-RS-ResourceToAddModList-r18        SEQUENCE (SIZE (1..maxNrofNZP-CSI-RS-Resources)) OF NZP-CSI-RS-Resource
    OPTIONAL,    -- Need N
    ltm-NZP-CSI-RS-ResourceToReleaseList-r18       SEQUENCE (SIZE (1..maxNrofNZP-CSI-RS-Resources)) OF NZP-CSI-RS-ResourceId
    OPTIONAL,    -- Need N
    ltm-NZP-CSI-RS-ResourceSetToAddModList-r18     SEQUENCE (SIZE (1..maxNrofNZP-CSI-RS-ResourceSets)) OF NZP-CSI-RS-ResourceSet
    OPTIONAL,    -- Need N
    ltm-NZP-CSI-RS-ResourceSetToReleaseList-r18    SEQUENCE (SIZE (1..maxNrofNZP-CSI-RS-ResourceSets)) OF NZP-CSI-RS-ResourceSetId
    OPTIONAL,    -- Need N
    pathlossReferenceRS-ToAddModList-r18           SEQUENCE (SIZE (1..maxNrofPathlossReferenceRSs-r17)) OF PathlossReferenceRS-r17
    OPTIONAL,    -- Need N
    pathlossReferenceRS-ToReleaseList-r18          SEQUENCE (SIZE (1..maxNrofPathlossReferenceRSs-r17)) OF PathlossReferenceRS-Id-r17
    OPTIONAL,    -- Need N
    unifiedTCI-StateType-r18                       ENUMERATED {separate, joint}                          OPTIONAL,    -- Need R
    ...
}

Fields (11)

FieldDescription
ltm-DL-OrJointTCI-StateToAddModList-r18
SEQUENCE (SIZE (1..maxNrofCandidateTCI-State-r18)) OF CandidateTCI-State-r18 · OPTIONAL Need N
ltm-DL-OrJointTCI-StateToReleaseList-r18
SEQUENCE (SIZE (1..maxNrofCandidateTCI-State-r18)) OF TCI-StateId · OPTIONAL Need N
ltm-UL-TCI-StateToAddModList-r18
SEQUENCE (SIZE (1..maxNrofCandidateUL-TCI-r18)) OF CandidateTCI-UL-State-r18 · OPTIONAL Need N
ltm-UL-TCI-StateToReleaseList-r18
SEQUENCE (SIZE (1.. maxNrofCandidateUL-TCI-r18)) OF TCI-UL-StateId-r17 · OPTIONAL Need N
ltm-NZP-CSI-RS-ResourceToAddModList-r18
SEQUENCE (SIZE (1..maxNrofNZP-CSI-RS-Resources)) OF NZP-CSI-RS-Resource · OPTIONAL Need N
When the field ltm-NZP-CSI-RS-ResourceToAddModList is configured within an LTM-Candidate IE, this field is absent
ltm-NZP-CSI-RS-ResourceToReleaseList-r18
SEQUENCE (SIZE (1..maxNrofNZP-CSI-RS-Resources)) OF NZP-CSI-RS-ResourceId · OPTIONAL Need N
When the field ltm-NZP-CSI-RS-ResourceToReleaseList is configured within an LTM-Candidate IE, this field is absent
ltm-NZP-CSI-RS-ResourceSetToAddModList-r18
SEQUENCE (SIZE (1..maxNrofNZP-CSI-RS-ResourceSets)) OF NZP-CSI-RS-ResourceSet · OPTIONAL Need N
When the field ltm-NZP-CSI-RS-ResourceSetToAddModList is configured within an LTM-Candidate IE, this field is absent
ltm-NZP-CSI-RS-ResourceSetToReleaseList-r18
SEQUENCE (SIZE (1..maxNrofNZP-CSI-RS-ResourceSets)) OF NZP-CSI-RS-ResourceSetId · OPTIONAL Need N
When the field ltm-NZP-CSI-RS-ResourceSetToReleaseList is configured within an LTM-Candidate IE, this field is absent
pathlossReferenceRS-ToAddModList-r18
SEQUENCE (SIZE (1..maxNrofPathlossReferenceRSs-r17)) OF PathlossReferenceRS-r17 · OPTIONAL Need N
pathlossReferenceRS-ToReleaseList-r18
SEQUENCE (SIZE (1..maxNrofPathlossReferenceRSs-r17)) OF PathlossReferenceRS-Id-r17 · OPTIONAL Need N
unifiedTCI-StateType-r18
ENUMERATED {separate, joint} · OPTIONAL Need R
Indicates the unified TCI states type the UE is configured for this LTM candidate configuration. The value separate means this LTM candidate configuration is configured with ltm-DL-OrJointTCI-StateToAddModList for DL TCI states and ltm-UL-TCI-StateToAddModList for UL TCI states. The value joint means this LTM candidate configuration is configured with ltm-DL-OrJointTCI-StateToAddModList for joint TCI states for UL and DL operation. The network always configures this field.

Used by (1)

Uses (15)

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