3GPP Scout / RRC information elements

RRC information element

CSI-ReportConfig: 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 48 fields (17 in Rel-15, 4 in Rel-16, 10 in Rel-17, 5 in Rel-18, 12 in Rel-19)
Used in
CA-ParametersNR, CSI-MeasConfig, LTM-CSI-ReportConfig, LTM-Candidate

In plain words

CSI-ReportConfig in 3GPP TS 38.331 uses its carrier field to indicate "in which serving cell the CSI-ResourceConfig indicated below are to be found." It identifies configured resources for channel measurement and CSI interference measurement on that serving cell. Its SEQUENCE has 48 fields, growing from 17 in Rel-15 to 12 additional fields in Rel-19, with additions in each intervening release.

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.