SecurityModeCommand

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

SecurityModeCommand 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) · Not changed since

Definition

The SecurityModeCommand message is used to command the activation of AS security.

SecurityModeCommand ::=             SEQUENCE {
    rrc-TransactionIdentifier           RRC-TransactionIdentifier,
    criticalExtensions                  CHOICE {
        securityModeCommand                 SecurityModeCommand-IEs,
        criticalExtensionsFuture            SEQUENCE {}
    }
}

Fields (4)

Fields of SecurityModeCommand-IEs (3)

Used by (1)

• DL-DCCH-MessageType

Uses (2)

• RRC-TransactionIdentifier
• SecurityModeCommand-IEs

In the viewer

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