MeasGapConfig

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

MeasGapConfig 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

The IE MeasGapConfig specifies the measurement gap configuration and controls setup/release of measurement gaps.

MeasGapConfig ::=                   SEQUENCE {
    gapFR2                              SetupRelease { GapConfig }                                              OPTIONAL,   -- Need M
    ...,
    [[
        gapFR1                              SetupRelease { GapConfig }                                              OPTIONAL,   -- Need M
        gapUE                               SetupRelease { GapConfig }                                              OPTIONAL    -- Need M
    ]],
    [[
        gapToAddModList-r17           SEQUENCE (SIZE (1..maxNrofGapId-r17)) OF GapConfig-r17                    OPTIONAL,   -- Need N
        gapToReleaseList-r17          SEQUENCE (SIZE (1..maxNrofGapId-r17)) OF MeasGapId-r17                    OPTIONAL,   -- Need N
        posMeasGapPreConfigToAddModList-r17      PosMeasGapPreConfigToAddModList-r17                                OPTIONAL,   -- Need N
        posMeasGapPreConfigToReleaseList-r17     PosMeasGapPreConfigToReleaseList-r17                               OPTIONAL    -- Need N
    ]]
}

Fields (7)

Field	Description
gapFR2 SetupRelease { GapConfig } · OPTIONAL Need M	Indicates measurement gap configuration applies to FR2 only. In (NG)EN-DC or NE-DC, gapFR2 can only be set up by NR RRC (i.e. LTE RRC cannot configure FR2 gap). In NR-DC, gapFR2 can only be set up in the measConfig associated with MCG. gapFR2 cannot be configured together with gapUE . The applicability of the FR2 measurement gap is according to Table 9.1.2-2 and Table 9.1.2-3 in TS 38.133 [14].
gapFR1 SetupRelease { GapConfig } · OPTIONAL Need M since v15.3.0	Indicates measurement gap configuration that applies to FR1 only. In (NG)EN-DC, gapFR1 cannot be set up by NR RRC (i.e. only LTE RRC can configure FR1 measurement gap). In NE-DC, gapFR1 can only be set up by NR RRC (i.e. LTE RRC cannot configure FR1 gap). In NR-DC, gapFR1 can only be set up in the measConfig associated with MCG. gapFR1 can not be configured together with gapUE . The applicability of the FR1 measurement gap is according to Table 9.1.2-2 and Table 9.1.2-3 in TS 38.133 [14].
gapUE SetupRelease { GapConfig } · OPTIONAL Need M since v15.3.0	Indicates measurement gap configuration that applies to all frequencies (FR1 and FR2). In (NG)EN-DC, gapUE cannot be set up by NR RRC (i.e. only LTE RRC can configure per UE measurement gap). In NE-DC, gapUE can only be set up by NR RRC (i.e. LTE RRC cannot configure per UE gap). In NR-DC, gapUE can only be set up in the measConfig associated with MCG. If gapUE is configured, then neither gapFR1 nor gapFR2 can be configured. For TN, the applicability of the per UE measurement gap is according to Table 9.1.2-2 and Table 9.1.2-3 for non-RedCap UEs, and Table 9.1A.2-2 for RedCap UEs in TS 38.133 [14]. For NTN, the applicability of per UE measurement gap is according to subclause 9.1C.2 in TS 38.133 [14].
gapToAddModList-r17 SEQUENCE (SIZE (1..maxNrofGapId-r17)) OF GapConfig-r17 · OPTIONAL Need N since v17.1.0	A list of of measurement gap configuration to be added or modified. If more than one measurement gap is configured (i.e. concurrent measurement gap as specified in TS 38.133[14], clause 9.1.8 for TN or clause 9.1C.8 for NTN), the maximum number of configured measurement gap is limited by the gap combinations defined in Table 9.1.8-1 in TS 38.133 [14] for TN.For NTN the maximum number of configured measurement gap is limited by UE capability indicated in parallelMeasurementGap . In this version of the specification, the network configures this field only in NR standalone. This field is used only for a UE that supports pre-configured measurement gap, concurrent measurement gap, or NCSG. In this version of the specification, the network does not configure concurrent measurement gap together with preconfigured measurement gap for positioning. For the UE supporting the capability of musim-GapPriorityPreference , the network can configure concurrent measurement gap together with MUSIM gap. Otherwise, the network does not configure concurrent measurement gap together with MUSIM gap.
gapToReleaseList-r17 SEQUENCE (SIZE (1..maxNrofGapId-r17)) OF MeasGapId-r17 · OPTIONAL Need N since v17.1.0	A list of measurement gap configuration to be released.
posMeasGapPreConfigToAddModList-r17 PosMeasGapPreConfigToAddModList-r17 · OPTIONAL Need N since v17.1.0	List of preconfigured measurement gap for positioning to add and/or modify. All the gaps configured are associated with the measurement of PRS for RSTD, UE-RxTx Time Difference, PRS-RSRP and PRS-RSRPP as defined in TS 38.215 [9]. In this version of the specification, the network does not configure preconfigured measurement gap for positioning together with concurrent measurement gap or MUSIM gap.
posMeasGapPreConfigToReleaseList-r17 PosMeasGapPreConfigToReleaseList-r17 · OPTIONAL Need N since v17.1.0	List of preconfigured measurement gap for positioning to release.

Used by (1)

MeasConfig

MeasGapConfig

Definition

Fields (7)

Used by (1)

Uses (7)

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