BWP-Id

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

BWP-Id 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) · Not changed since

Definition

The IE BWP-Id is used to refer to Bandwidth Parts (BWP). The initial BWP (including RedCap-specific initial BWP, if configured) is referred to by BWP-Id 0. The other BWPs are referred to by BWP-Id 1 to maxNrofBWPs .

BWP-Id ::=                          INTEGER (0..maxNrofBWPs)

Used by (24)

• BWP-Downlink
• BWP-Uplink
• CSI-ResourceConfig
• DormantBWP-Config-r16
• OutsideActiveTimeConfig-r16
• PUCCH-CSI-Resource
• PUCCH-SRS
• PUSCH-ResourceOfModeB-r19
• QCL-Info
• RMTC-Config-r16
• SL-BWP-Config-r16
• SL-FreqConfig-r16
• SRS-ResourceConfigCLI-r16
• SRS-SpatialRelationInfo
• SRS-SpatialRelationInfoPos-r16
• ServingCellAndBWP-Id-r17
• ServingCellConfig
• SpatialRelationInfo-PDC-r17
• TCI-UL-State-r17
• UE-InitiatedResource-r19
• UplinkConfig
• UplinkTxDirectCurrentBWP
• UplinkTxDirectCurrentCarrierInfo-r16
• WithinActiveTimeConfig-r16

Uses (1)

• maxNrofBWPs

In the viewer

• Read BWP-Id in v19.4.0
• History of BWP-Id across versions
• All versions of TS 38.331
• ASN.1 index