SL-FreqConfigCommon (SL-FreqConfigCommon-r16)

RRC IE · TS 38.331 v19.4.0 (2026-09) · clause 6.3.5

SL-FreqConfigCommon-r16 is an RRC information element of 3GPP TS 38.331 (38331), the 5G NR Radio Resource Control (RRC) protocol.

First seen v16.0.0 (2020-04) · Last changed v18.6.0 (2025-06)

Definition

The IE SL-FreqConfigCommon specifies the cell-specific configuration information on one particular carrier frequency for NR sidelink communication/positioning.

SL-FreqConfigCommon-r16 ::=       SEQUENCE {
    sl-SCS-SpecificCarrierList-r16    SEQUENCE (SIZE (1..maxSCSs)) OF SCS-SpecificCarrier,
    sl-AbsoluteFrequencyPointA-r16    ARFCN-ValueNR,
    sl-AbsoluteFrequencySSB-r16       ARFCN-ValueNR                                                      OPTIONAL, -- Need R
    frequencyShift7p5khzSL-r16        ENUMERATED {true}                                                  OPTIONAL, -- Cond V2X-SL-Shared
    valueN-r16                        INTEGER (-1..1),
    sl-BWP-List-r16                   SEQUENCE (SIZE (1..maxNrofSL-BWPs-r16)) OF SL-BWP-ConfigCommon-r16 OPTIONAL, -- Need R
    sl-SyncPriority-r16               ENUMERATED {gnss, gnbEnb}                                          OPTIONAL, -- Need R
    sl-NbAsSync-r16                   BOOLEAN                                                            OPTIONAL, -- Need R
    sl-SyncConfigList-r16             SL-SyncConfigList-r16                                              OPTIONAL, -- Need R
    ...,
    [[
        sl-UnlicensedFreqConfigCommon-r18     SEQUENCE {
            absenceOfAnyOtherTechnology-r18       ENUMERATED {true}                                           OPTIONAL, -- Need R
            sl-FreqSelectionConfigList-r18        SEQUENCE (SIZE (1..8)) OF SL-FreqSelectionConfig-r18        OPTIONAL, -- Need R
            sl-SyncTxDisabled-r18                 ENUMERATED {true}                                           OPTIONAL, -- Need R
            sl-EnergyDetectionConfig-r18          CHOICE {
                sl-MaxEnergyDetectionThreshold-r18    INTEGER (-85..-52),
                sl-EnergyDetectionThresholdOffset-r18 INTEGER (-13..20)
            }                                                                                                 OPTIONAL, -- Need R
            ue-ToUE-COT-SharingED-Threshold-r18      INTEGER (-85..-52)                                       OPTIONAL, -- Need R
            harq-ACK-FeedbackRatioforCW-AdjustmentGC-Option2-r18 INTEGER (10..100)                            OPTIONAL  -- Need R
        }                                                                                                        OPTIONAL, -- Cond SIB12
        sl-PosBWP-List-r18                SEQUENCE ( SIZE (1..maxNrofSL-BWPs-r16)) OF SL-PosBWP-ConfigCommon-r18 OPTIONAL  -- Cond SIB23
    ]],
    [[
        additionalSpectrumEmission-v1860      AdditionalSpectrumEmission-v1760                                OPTIONAL  -- Need R
    ]]
}

Candidate change requests of v18.6.0

The CRs whose title or cover names this change, strong and likely matches only.

CR 5386 r1 (strong): (R18)Introduction of additionalSpectrumEmission in SL

Fields (20)

Field	Description
sl-SCS-SpecificCarrierList-r16 SEQUENCE (SIZE (1..maxSCSs)) OF SCS-SpecificCarrier
sl-AbsoluteFrequencyPointA-r16 ARFCN-ValueNR	Absolute frequency of the reference resource block (Common RB 0). Its lowest subcarrier is also known as Point A.
sl-AbsoluteFrequencySSB-r16 ARFCN-ValueNR · OPTIONAL Need R	Indicates the frequency location of sidelink SSB. The transmission bandwidth for sidelink SSB is within the bandwidth of this sidelink BWP.
frequencyShift7p5khzSL-r16 ENUMERATED {true} · OPTIONAL Cond V2X-SL-Shared	Enable the NR SL transmission with a 7.5 kHz shift to the LTE raster. If the field is absent, the frequency shift is disabled.
valueN-r16 INTEGER (-1..1)	Indicate the NR SL transmission with a valueN 5kHz shift to the LTE raster (see TS 38.101-1 [15], clause 5.4E.2).
sl-BWP-List-r16 SEQUENCE (SIZE (1..maxNrofSL-BWPs-r16)) OF SL-BWP-ConfigCommon-r16 · OPTIONAL Need R	This field indicates the list of sidelink BWP(s) on which the NR sidelink communication configuration. In this release, only one BWP is allowed to be configured for NR sidelink communication.
sl-SyncPriority-r16 ENUMERATED {gnss, gnbEnb} · OPTIONAL Need R	This field indicates synchronization priority order, as specified in clause 5.8.6. All values in sl-SyncPriority are same across all carrier frequencies configured for UEs performing NR sidelink communication on multiple carrier frequencies.
sl-NbAsSync-r16 BOOLEAN · OPTIONAL Need R	This field indicates whether the network can be selected as synchronization reference directly/indirectly only, if sl-SyncPriority is set to gnss. If this field is set to TRUE, the network is enabled to be selected as synchronization reference directly/indirectly. The field is only present in SidelinkPreconfigNR . Otherwise it is absent. All values in sl-NbAsSync are same across all carrier frequencies configured for UEs performing NR sidelink communication on multiple carrier frequencies.
sl-SyncConfigList-r16 SL-SyncConfigList-r16 · OPTIONAL Need R	This field indicates the configuration by which the UE is allowed to receive and transmit synchronisation information for NR sidelink communication. Network configures sl-SyncConfig including txParameters when configuring UEs to transmit synchronisation information. If this field is configured in SL-PreconfigurationNR-r16 , only one entry is configured in sl-SyncConfigList .
sl-UnlicensedFreqConfigCommon-r18 SEQUENCE { · OPTIONAL Cond SIB12 since v18.1.0
absenceOfAnyOtherTechnology-r18 ENUMERATED {true} · OPTIONAL Need R since v18.1.0	Presence of this field indicates absence on a long term basis (e.g. by level of regulation) of any other technology sharing the carrier; absence of this field indicates the potential presence of any other technology sharing the carrier, as specified in TS 37.213 [48] clauses 4.5.5. This parameter is not expected to be provided if the sidelink carrier is overlapped with uplink carrier.
sl-FreqSelectionConfigList-r18 SEQUENCE (SIZE (1..8)) OF SL-FreqSelectionConfig-r18 · OPTIONAL Need R since v18.1.0
sl-SyncTxDisabled-r18 ENUMERATED {true} · OPTIONAL Need R since v18.1.0	Indicates that the carrier, even though equipped with synchronisation resources, cannot be used as a synchronisation carrier frequency to transmit S-SSB.
sl-EnergyDetectionConfig-r18 CHOICE { · OPTIONAL Need R since v18.1.0	Indicates whether to use the maxEnergyDetectionThreshold or the energyDetectionThresholdOffset (see TS 37.213 [48], clause 4.5.5).
sl-MaxEnergyDetectionThreshold-r18 INTEGER (-85..-52) since v18.1.0	Indicates the absolute maximum energy detection threshold value. Unit in dBm. Value -85 corresponds to -85 dBm, value -84 corresponds to -84 dBm, and so on (i.e. in steps of 1dBm) as specified in TS 37.213 [48], clause 4.5.5.
sl-EnergyDetectionThresholdOffset-r18 INTEGER (-13..20) since v18.1.0	Indicates the offset to the default maximum energy detection threshold value. Unit in dB. Value -13 corresponds to -13dB, value -12 corresponds to -12dB, and so on (i.e. in steps of 1dB) as specified in TS 37.213 [48], clause 4.5.5.
ue-ToUE-COT-SharingED-Threshold-r18 INTEGER (-85..-52) · OPTIONAL Need R since v18.1.0	Indicates the energy detection threshold that a UE uses to initiate a channel occupancy with to other UE(s), and the other UE(s) that shares the initiated channel occupancy shall use this configured parameter for accessing the channel(s) as specified in TS 37.213 [48], clause 4.5.5 for sidelink channel access. Unit in dBm. Value -85 corresponds to -85 dBm, value -84 corresponds to -84 dBm, and so on (i.e. in steps of 1dBm).
harq-ACK-FeedbackRatioforCW-AdjustmentGC-Option2-r18 INTEGER (10..100) · OPTIONAL Need R since v18.1.0	Indicates the ratio threshold for contention window adjustment for SL groupcast option 2 as specified in TS 37.213 [48], clause 4.5.4. Unit is percentage.
sl-PosBWP-List-r18 SEQUENCE ( SIZE (1..maxNrofSL-BWPs-r16)) OF SL-PosBWP-ConfigCommon-r18 · OPTIONAL Cond SIB23 since v18.1.0	This field indicates the list of sidelink BWP(s) for NR sidelink positioning configuration. Only one BWP is allowed to be configured for NR sidelink positioning.
additionalSpectrumEmission-v1860 AdditionalSpectrumEmission-v1760 · OPTIONAL Need R since v18.6.0	Provides the additionalSpectrumEmission values as defined in TS 38.101-1 [15], clause 6.2E.3.1 or 6.2E.3F.1. Only one of additionalSpectrumEmission-r16 or additionalSpectrumEmission-v1860 is configured by network for each sidelink frequency.

SL-FreqConfigCommon (SL-FreqConfigCommon-r16)

Definition

Candidate change requests of v18.6.0

Fields (20)

Used by (4)

Uses (9)

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