3GPP Scout / RRC information elements

RRC information element

RadioBearerConfig: the RRC information element in TS 38.331

Published 2026-11-05Updated 2026-10-16

At a glance

Specification
3GPP TS 38.331 V19.4.0, clause 6.3.2
Structure
SEQUENCE with 13 fields (5 in Rel-15, 4 in Rel-17, 2 in Rel-18, 2 in Rel-19)
Used in
SIB12, SL-ConfigDedicatedNR, SL-RadioBearerConfig

In plain words

In 3GPP TS 38.331, RadioBearerConfig is used to "add, modify and release signalling, multicast MRBs and/or data radio bearers.". Its securityConfig indicates the security algorithm and key for the signalling and data radio bearers configured in the IE. SRB3 release is possible only over SRB1, and only at SCG release and reconfiguration with sync. The SEQUENCE has 13 fields, with 5 from Rel-15, 4 from Rel-17, 2 from Rel-18 and 2 from Rel-19.

Source: 3GPP TS 38.331 V19.4.0, clause 6.3.2. © 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TSDSI, TTA, TTC). Official text: https://www.3gpp.org/ftp/Specs/archive/38_series/38.331/38331-j40.zip

Sources

  1. 3GPP TS 38.331 V19.4.0, clause 6.3.2. © 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TSDSI, TTA, TTC). Official text: https://www.3gpp.org/ftp/Specs/archive/38_series/38.331/38331-j40.zip
  2. ASN.1 definition in the same clause, counted by 3GPP Scout.

How this page was made

The facts box comes straight from the 3GPP TDoc list and specification archive as indexed by 3GPP Scout. An AI model (GPT-6 Luna) wrote the paragraph and named the source of each sentence. Code checked every quote word for word against the stored source text and every number against the cited source. A second AI model from another company (Claude Opus 5.5) reviewed the paragraph against the same sources. The 3GPP documents themselves govern.