NR RRC Messages
NR RRC messages manage radio control between the UE and gNB in 5G access.
Use this category to browse setup, reconfiguration, measurement, and mobility-related NR RRC signaling.
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All Messages in This Category
This is the full published list for the RRC category. Use the filter section above for a narrower interactive view.
5G NR - Counter Check
Counter Check is the NR RRC message the network uses to provide current PDCP COUNT MSB values for configured DRBs and ask the UE to compare them with its own COUNT state.
5G NR - Counter Check Response
Counter Check Response is the NR RRC message the UE sends after Counter Check to return the compared DRB COUNT values for bearer-state verification.
5G NR - Dedicated SIB Request
Dedicated SIB Request is the UE-to-network NR RRC message used to request on-demand system information while the UE is already in connected mode.
5G NR - DL Dedicated Message Segment
DL Dedicated Message Segment is the NR downlink RRC segmentation container used when a dedicated RRC message is too large to send as a single unit.
5G NR - DL Information Transfer
DL Information Transfer is the NR RRC message the network uses to send upper-layer information, most commonly NAS messages, to the UE over the established RRC connection.
5G NR - DL Information Transfer MRDC
DL Information Transfer MRDC is the downlink NR RRC container used to deliver MR-DC-related information toward the UE.
5G NR - Failure Information
Failure Information is the NR RRC message the UE uses to inform the network that it has detected a failure, especially an RLC bearer failure associated with an MCG or SCG bearer.
5G NR - IAB Other Information
IAB Other Information is an NR RRC message used to deliver additional IAB-specific information needed by an IAB node.
5G NR - Indirect Path Failure Information
Indirect Path Failure Information is an NR RRC message used to report failure related to an indirect path or relayed path in advanced deployment scenarios.
5G NR - Location Measurement Indication
Location Measurement Indication is the NR RRC message used by the UE to indicate location-related measurement information toward the network.
5G NR - Logged Measurement Configuration
Logged Measurement Configuration is the NR RRC message used to configure measurement logging behavior for MDT and later reporting workflows.
5G NR - Master Information Block (MIB)
The NR Master Information Block (MIB) is the first essential broadcast RRC information a UE decodes from PBCH after synchronization. It gives the UE the minimal system information needed to continue toward SIB1 acquisition and initial access.
5G NR - MBS Broadcast Configuration
MBS Broadcast Configuration is the NR RRC message used to provide UE-specific or dedicated MBS broadcast configuration.
5G NR - MBS Interest Indication
MBS Interest Indication is the UE-to-network NR RRC message used to indicate interest in MBS services or sessions.
5G NR - MBS Multicast Configuration
MBS Multicast Configuration is the NR RRC message used to provide dedicated MBS multicast configuration to the UE.
5G NR - MCG Failure Information
MCG Failure Information is the NR RRC message used by the UE to report failure related to the master cell group.
5G NR - Measurement Configuration
Measurement Configuration is the NR RRC configuration block that tells the UE what to measure, when to report, and how measurement identities map objects and report rules. It is usually delivered inside RRC Reconfiguration rather than as a standalone message.
5G NR - Measurement Report
Measurement Report is the NR RRC message a UE sends to the gNB when configured measurement conditions are met, allowing the network to make mobility, beam, and radio-resource decisions.
5G NR - Measurement Report AppLayer
Measurement Report AppLayer is the NR RRC message used by the UE to report application-layer measurements to the network.
5G NR - Mobility From NR Command
Mobility From NR Command is the NR RRC message used by the network to command mobility away from the current NR context toward another target system or mobility outcome.
5G NR - Paging
Paging is the NR RRC message used by the network to notify an idle-mode or inactive-mode UE that downlink signaling or service activity requires the UE's attention.
5G NR - RRC Reconfiguration
Reconfigures the UE radio connection after setup, including bearers, measurements, and mobility.
5G NR - RRC Reconfiguration Complete
RRC Reconfiguration Complete is the UE-to-network NR RRC message confirming that the UE successfully applied the received RRC Reconfiguration.
5G NR - RRC Reestablishment
RRC Reestablishment is the downlink NR RRC message the network sends when it accepts a reestablishment attempt and provides the recovered connected-mode context.
5G NR - RRC Reestablishment Complete
RRC Reestablishment Complete is the UE-to-network NR RRC message confirming that reestablishment succeeded and the recovered context is active.
5G NR - RRC Reestablishment Request
Uplink NR RRC message sent by the UE on SRB0 and CCCH to request re-establishment of an existing RRC connection after radio link failure, handover failure, or reconfiguration failure.
5G NR - RRC Reject
Downlink NR RRC message used by the network to reject an RRC connection establishment attempt or an RRC connection resumption attempt.
5G NR - RRC Release
RRC Release is the downlink NR RRC message used by the network to release the connected-mode context and move the UE out of active connected signaling.
5G NR - RRC Resume
RRC Resume is the downlink NR RRC message used by the network to resume a suspended or inactive context after a valid resume request.
5G NR - RRC Resume Complete
RRC Resume Complete is the UE-to-network NR RRC message confirming that the suspended or inactive context was resumed successfully.
5G NR - RRC Resume Request
RRC Resume Request is the UE-to-network NR RRC message used to request resumption of a suspended or inactive context.
5G NR - RRC Resume Request1
RRC Resume Request1 is an alternate NR RRC resume request message variant used in the resume procedure.
5G NR - RRC Setup
Downlink NR RRC message sent by the gNB to establish SRB1 and move the UE into the connected RRC procedure.
5G NR - RRC Setup Complete
Uplink NR RRC message sent by the UE on SRB1 and DCCH to confirm successful RRC connection establishment and transfer the initial NAS message.
5G NR - RRC Setup Request
Uplink NR RRC message sent by the UE on SRB0 and CCCH to request establishment of an RRC connection.
5G NR - RRC SystemInfo Request
RRC SystemInfo Request is the NR RRC message the UE uses to request system information directly from the network.
5G NR - SCG Failure Information
SCG Failure Information is the NR RRC message used by the UE to report failure related to the secondary cell group.
5G NR - SCG Failure Information EUTRA
SCG Failure Information EUTRA is the NR RRC message used to report failure in an E-UTRA secondary cell group context.
5G NR - Security Mode Command
Downlink NR RRC message used by the gNB to activate AS security for the UE in RRC_CONNECTED.
5G NR - Security Mode Complete
Uplink NR RRC message used by the UE to confirm successful activation of the selected AS security configuration.
5G NR - Security Mode Failure
Uplink NR RRC message used by the UE to indicate that the commanded AS security activation could not be completed successfully.
5G NR - Sidelink UE Information NR
Sidelink UE Information NR is the UE-to-network NR RRC message used to provide sidelink-related information toward the network.
5G NR - System Information
System Information is the NR RRC broadcast container used to carry one or more SIBs or positioning SIBs with the same periodicity.
5G NR - System Information Block 1 (SIB1)
SystemInformationBlockType1 (SIB1) is the key NR broadcast system information block that tells the UE how to access the cell, select PLMN context, and interpret important cell-level access restrictions and configuration.
5G NR - System Information Block 10 (SIB10)
System Information Block 10 (SIB10) is an NR broadcast system information block used to carry the Human-Readable Network Names (HRNN) of NPNs listed in SIB1.
5G NR - System Information Block 11 (SIB11)
System Information Block 11 (SIB11) is an NR broadcast system information block used to provide idle and inactive measurement configuration for the UE.
5G NR - System Information Block 12 (SIB12)
System Information Block 12 (SIB12) is an NR broadcast system information block used to provide sidelink communication and discovery configuration to UEs that support NR sidelink.
5G NR - System Information Block 13 (SIB13)
System Information Block 13 (SIB13) is an NR broadcast system information block used to provide V2X sidelink communication information aligned with the LTE SystemInformationBlockType21 behavior referenced by NR.
5G NR - System Information Block 14 (SIB14)
System Information Block 14 (SIB14) is an NR broadcast system information block used to provide information related to LTE SystemInformationBlockType26 for V2X sidelink communication.
5G NR - System Information Block 15 (SIB15)
System Information Block 15 (SIB15) is an NR broadcast system information block used to provide disaster roaming information for PLMNs sharing the cell.
5G NR - System Information Block 16 (SIB16)
System Information Block 16 (SIB16) is an NR broadcast system information block used to provide slice-based cell reselection information.
5G NR - System Information Block 17 (SIB17)
System Information Block 17 (SIB17) is an NR broadcast system information block used to provide TRS resource configuration for idle and inactive UEs.
5G NR - System Information Block 18 (SIB18)
System Information Block 18 (SIB18) is an NR broadcast system information block used to provide Group IDs for Network selection (GINs) to support credentials-holder based access and UE onboarding.
5G NR - System Information Block 19 (SIB19)
System Information Block 19 (SIB19) is an NR broadcast system information block used to provide NTN-specific parameters for the serving cell and, when present, neighboring NTN cells.
5G NR - System Information Block 2 (SIB2)
System Information Block 2 (SIB2) is an NR broadcast system information block used mainly for cell reselection and idle-state mobility-related behavior after the UE has already acquired the essential access information from MIB and SIB1.
5G NR - System Information Block 20 (SIB20)
System Information Block 20 (SIB20) is an NR broadcast system information block used to provide the MCCH and MTCH acquisition configuration for MBS broadcast.
5G NR - System Information Block 21 (SIB21)
System Information Block 21 (SIB21) is an NR broadcast system information block used to provide MBS Frequency Selection Area Identity mapping for service continuity.
5G NR - System Information Block 22 (SIB22)
System Information Block 22 (SIB22) is an NR broadcast system information block used to provide ATG-specific parameters for the serving cell and optionally neighboring cells.
5G NR - System Information Block 23 (SIB23)
System Information Block 23 (SIB23) is an NR broadcast system information block used to provide ranging and sidelink positioning information.
5G NR - System Information Block 24 (SIB24)
System Information Block 24 (SIB24) is an NR broadcast system information block used to provide the information required to acquire multicast MCCH and MTCH configuration.
5G NR - System Information Block 25 (SIB25)
System Information Block 25 (SIB25) is an NR broadcast system information block used to provide TN coverage information for NTN-related operation.
5G NR - System Information Block 3 (SIB3)
System Information Block 3 (SIB3) is an NR broadcast system information block used for intra-frequency cell reselection behavior and idle-state mobility decisions on the current NR carrier.
5G NR - System Information Block 4 (SIB4)
System Information Block 4 (SIB4) is an NR broadcast system information block used for inter-frequency cell reselection behavior and idle-state mobility decisions across other NR carrier frequencies.
5G NR - System Information Block 5 (SIB5)
System Information Block 5 (SIB5) is an NR broadcast system information block used for inter-RAT mobility context, helping the UE evaluate reselection toward other radio access technologies such as LTE.
5G NR - System Information Block 6 (SIB6)
System Information Block 6 (SIB6) is an NR broadcast system information block used for inter-RAT mobility context toward UTRA, helping the UE evaluate reselection from NR toward UMTS when that mobility path is part of the deployment.
5G NR - System Information Block 7 (SIB7)
System Information Block 7 (SIB7) is an NR broadcast system information block used for inter-RAT mobility context toward GERAN, helping the UE evaluate reselection from NR toward GSM where that legacy mobility path still exists.
5G NR - System Information Block 8 (SIB8)
System Information Block 8 (SIB8) is an NR broadcast system information block used for inter-RAT mobility context toward cdma2000 systems where that legacy mobility path still exists.
5G NR - System Information Block 9 (SIB9)
System Information Block 9 (SIB9) is an NR broadcast system information block used to convey time information such as UTC and GPS-related timing context to the UE.
5G NR - UE Assistance Information
UE Assistance Information is the UE-to-network NR RRC message used to provide assistance or preference information that helps the network optimize handling for the UE.
5G NR - UE Capability Enquiry
Downlink NR RRC message used by the gNB to request UE capability information needed for feature, bearer, mobility, and radio configuration decisions.
5G NR - UE Capability Information
Uplink NR RRC message used by the UE to report its supported radio capability containers to the gNB.
5G NR - UE Information Request
UE Information Request is the NR RRC message the network uses to ask the UE for diagnostic information such as radio link failure context, connection establishment failure context, logged measurements, mobility history, random access reports, or idle and inactive measurement information.
5G NR - UE Information Response
UE Information Response is the NR RRC message the UE uses to return requested diagnostic information such as RLF data, connection establishment failure data, logged measurements, mobility history, random access reports, or idle and inactive measurement information.
5G NR - UE Positioning Assistance Info
UE Positioning Assistance Info is the UE-to-network NR RRC message used to provide UE-side positioning assistance information.
5G NR - UL Dedicated Message Segment
UL Dedicated Message Segment is the uplink NR RRC segmentation container used when a UE dedicated RRC payload is too large to send as a single message.
5G NR - UL Information Transfer
UL Information Transfer is the NR RRC message the UE uses to send upper-layer information, most commonly NAS messages, to the network over the established RRC connection.
5G NR - UL Information Transfer IRAT
UL Information Transfer IRAT is the UE-to-network NR RRC wrapper used to carry inter-RAT related information in the uplink direction.
5G NR - UL Information Transfer MRDC
UL Information Transfer MRDC is the UE-to-network NR RRC wrapper used to carry MR-DC-related information in the uplink direction.