SystemInformation

RRC message · TS 38.331 v19.4.0 (2026-09) · clause 6.2.2

SystemInformation is an RRC message of 3GPP TS 38.331 (38331), the 5G NR Radio Resource Control (RRC) protocol.

First seen v15.3.0 (2018-09) · Last changed v19.1.0 (2026-01), in SystemInformation-IEs

Definition

The SystemInformation message is used to convey one or more System Information Blocks or Positioning System Information Blocks. All the SIBs or posSIBs included are transmitted with the same periodicity.

SystemInformation ::=               SEQUENCE {
    criticalExtensions                  CHOICE {
        systemInformation                   SystemInformation-IEs,
        criticalExtensionsFuture-r16    CHOICE {
            posSystemInformation-r16        PosSystemInformation-r16-IEs,
            criticalExtensionsFuture        SEQUENCE {}
        }
    }
}

Fields (5)

Field	Description
criticalExtensions CHOICE {
systemInformation SystemInformation-IEs since v15.6.0
criticalExtensionsFuture-r16 CHOICE { since v16.0.0
posSystemInformation-r16 PosSystemInformation-r16-IEs since v16.0.0
criticalExtensionsFuture SEQUENCE {} since v16.0.0

Fields of SystemInformation-IEs (31)

Field	Description
sib-TypeAndInfo SEQUENCE (SIZE (1..maxSIB)) OF CHOICE {
sib2 SIB2
sib3 SIB3
sib4 SIB4
sib5 SIB5
sib6 SIB6
sib7 SIB7
sib8 SIB8
sib9 SIB9
sib10-v1610 SIB10-r16 since v16.1.0
sib11-v1610 SIB11-r16 since v16.1.0
sib12-v1610 SIB12-r16 since v16.1.0
sib13-v1610 SIB13-r16 since v16.1.0
sib14-v1610 SIB14-r16 since v16.1.0
sib15-v1700 SIB15-r17 since v17.0.0
sib16-v1700 SIB16-r17 since v17.0.0
sib17-v1700 SIB17-r17 since v17.0.0
sib18-v1700 SIB18-r17 since v17.0.0
sib19-v1700 SIB19-r17 since v17.0.0
sib20-v1700 SIB20-r17 since v17.0.0
sib21-v1700 SIB21-r17 since v17.0.0
sib22-v1800 SIB22-r18 since v18.0.0
sib23-v1800 SIB23-r18 since v18.0.0
sib24-v1800 SIB24-r18 since v18.0.0
sib25-v1800 SIB25-r18 since v18.0.0
sib17bis-v1820 SIB17bis-r18 since v18.2.0
sib26-v1900 SIB26-r19 since v19.0.0
sib27-v1900 SIB27-r19 since v19.0.0
sib28-v1910 SIB28-r19 since v19.1.0
lateNonCriticalExtension OCTET STRING · OPTIONAL
nonCriticalExtension SEQUENCE {} · OPTIONAL

Fields of PosSystemInformation-r16-IEs (59)

Field	Description
posSIB-TypeAndInfo-r16 SEQUENCE (SIZE (1..maxSIB)) OF CHOICE { since v16.0.0
posSib1-1-r16 SIBpos-r16 since v16.0.0
posSib1-2-r16 SIBpos-r16 since v16.0.0
posSib1-3-r16 SIBpos-r16 since v16.0.0
posSib1-4-r16 SIBpos-r16 since v16.0.0
posSib1-5-r16 SIBpos-r16 since v16.0.0
posSib1-6-r16 SIBpos-r16 since v16.0.0
posSib1-7-r16 SIBpos-r16 since v16.0.0
posSib1-8-r16 SIBpos-r16 since v16.0.0
posSib2-1-r16 SIBpos-r16 since v16.0.0
posSib2-2-r16 SIBpos-r16 since v16.0.0
posSib2-3-r16 SIBpos-r16 since v16.0.0
posSib2-4-r16 SIBpos-r16 since v16.0.0
posSib2-5-r16 SIBpos-r16 since v16.0.0
posSib2-6-r16 SIBpos-r16 since v16.0.0
posSib2-7-r16 SIBpos-r16 since v16.0.0
posSib2-8-r16 SIBpos-r16 since v16.0.0
posSib2-9-r16 SIBpos-r16 since v16.0.0
posSib2-10-r16 SIBpos-r16 since v16.0.0
posSib2-11-r16 SIBpos-r16 since v16.0.0
posSib2-12-r16 SIBpos-r16 since v16.0.0
posSib2-13-r16 SIBpos-r16 since v16.0.0
posSib2-14-r16 SIBpos-r16 since v16.0.0
posSib2-15-r16 SIBpos-r16 since v16.0.0
posSib2-16-r16 SIBpos-r16 since v16.0.0
posSib2-17-r16 SIBpos-r16 since v16.0.0
posSib2-18-r16 SIBpos-r16 since v16.0.0
posSib2-19-r16 SIBpos-r16 since v16.0.0
posSib2-20-r16 SIBpos-r16 since v16.0.0
posSib2-21-r16 SIBpos-r16 since v16.0.0
posSib2-22-r16 SIBpos-r16 since v16.0.0
posSib2-23-r16 SIBpos-r16 since v16.0.0
posSib3-1-r16 SIBpos-r16 since v16.0.0
posSib4-1-r16 SIBpos-r16 since v16.1.0
posSib5-1-r16 SIBpos-r16 since v16.1.0
posSib6-1-r16 SIBpos-r16 since v16.0.0
posSib6-2-r16 SIBpos-r16 since v16.0.0
posSib6-3-r16 SIBpos-r16 since v16.0.0
posSib1-9-v1700 SIBpos-r16 since v17.0.0
posSib1-10-v1700 SIBpos-r16 since v17.0.0
posSib2-24-v1700 SIBpos-r16 since v17.0.0
posSib2-25-v1700 SIBpos-r16 since v17.0.0
posSib6-4-v1700 SIBpos-r16 since v17.0.0
posSib6-5-v1700 SIBpos-r16 since v17.0.0
posSib6-6-v1700 SIBpos-r16 since v17.0.0
posSib2-17a-v1770 SIBpos-r16 since v17.7.0
posSib2-18a-v1770 SIBpos-r16 since v17.7.0
posSib2-20a-v1770 SIBpos-r16 since v17.7.0
posSib1-11-v1800 SIBpos-r16 since v18.0.0
posSib1-12-v1800 SIBpos-r16 since v18.0.0
posSib2-26-v1800 SIBpos-r16 since v18.0.0
posSib2-27-v1800 SIBpos-r16 since v18.0.0
posSib6-7-v1800 SIBpos-r16 since v18.1.0
posSib7-1-v1800 SIBpos-r16 since v18.1.0
posSib7-2-v1800 SIBpos-r16 since v18.1.0
posSib7-3-v1800 SIBpos-r16 since v18.1.0
posSib7-4-v1800 SIBpos-r16 since v18.1.0
lateNonCriticalExtension OCTET STRING · OPTIONAL since v16.0.0
nonCriticalExtension SEQUENCE {} · OPTIONAL since v16.0.0

SystemInformation

Definition

Fields (5)

Fields of SystemInformation-IEs (31)

Fields of PosSystemInformation-r16-IEs (59)

Used by (5)

Uses (2)

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