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Content for  TS 36.331  Word version:  16.3.0

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1  ScopeWord‑p. 25
The present document specifies the Radio Resource Control protocol for the radio interface between UE and E-UTRAN as well as for the radio interface between RN and E-UTRAN.
The scope of the present document also includes:
  • the radio related information transported in a transparent container between source eNB and target eNB upon inter eNB handover;
  • the radio related information transported in a transparent container between a source or target eNB and another system upon inter RAT handover.
The RRC protocol is also used to configure the radio interface between an IAB-node and its parent nodes as specified in TS 38.300.
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2  References

The following documents contain provisions which, through reference in this text, constitute provisions of the present document.
  • References are either specific (identified by date of publication, edition number, version number, etc.) or non specific.
  • For a specific reference, subsequent revisions do not apply.
  • For a non-specific reference, the latest version applies. In the case of a reference to a 3GPP document (including a GSM document), a non-specific reference implicitly refers to the latest version of that document in the same Release as the present document.
[1]
TR 21.905: "Vocabulary for 3GPP Specifications".
[2]  Void.
[3]
TS 36.302: "Evolved Universal Terrestrial Radio Access (E-UTRA); Services provided by the physical layer ".
[4]
TS 36.304: "Evolved Universal Terrestrial Radio Access (E-UTRA); UE Procedures in Idle Mode".
[5]
TS 36.306: "Evolved Universal Terrestrial Radio Access (E-UTRA); UE Radio Access Capabilities".
[6]
TS 36.321: "Evolved Universal Terrestrial Radio Access (E-UTRA); Medium Access Control (MAC) protocol specification".
[7]
TS 36.322: "Evolved Universal Terrestrial Radio Access (E-UTRA); Radio Link Control (RLC) protocol specification".
[8]
TS 36.323: "Evolved Universal Terrestrial Radio Access (E-UTRA); Packet Data Convergence Protocol (PDCP) Specification".
[9]
TS 36.300: "Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Universal Terrestrial Radio Access (E-UTRAN); Overall description; Stage 2".
[10]
TS 22.011: "Service accessibility".
[11]
TS 23.122: "Non-Access-Stratum (NAS) functions related to Mobile Station (MS) in idle mode".
[12]
3GPP2 C.S0002-F v1.0: "Physical Layer Standard for cdma2000 Spread Spectrum Systems".
[13]
ITU-T Recommendation X.680 (07/2002): "Information Technology - Abstract Syntax Notation One (ASN.1): Specification of basic notation" (Same as the ISO/IEC International Standard 8824-1).
[14]
ITU-T Recommendation X.681 (07/2002): "Information Technology - Abstract Syntax Notation One (ASN.1): Information object specification" (Same as the ISO/IEC International Standard 8824-2).
[15]
ITU-T Recommendation X.691 (07/2002): "Information technology - ASN.1 encoding rules: Specification of Packed Encoding Rules (PER)" (Same as the ISO/IEC International Standard 8825-2).
[16]
TS 36.133: "Evolved Universal Terrestrial Radio Access (E-UTRA); Requirements for support of radio resource management".
[17]
TS 25.101: "Universal Terrestrial Radio Access (UTRA); User Equipment (UE) radio transmission and reception (FDD)".
[18]
TS 25.102: "Universal Terrestrial Radio Access (UTRA); User Equipment (UE) radio transmission and reception (TDD)".
[19]
TS 25.331: "Universal Terrestrial Radio Access (UTRA); Radio Resource Control (RRC); Protocol specification".
[20]
TS 45.005: "Radio transmission and reception".
[21]
TS 36.211: "Evolved Universal Terrestrial Radio Access (E-UTRA); Physical Channels and Modulation".
[22]
TS 36.212: "Evolved Universal Terrestrial Radio Access (E-UTRA); Multiplexing and channel coding".
[23]
TS 36.213: "Evolved Universal Terrestrial Radio Access (E-UTRA); Physical layer procedures".
[24]
3GPP2 C.S0057-E v1.0: "Band Class Specification for cdma2000 Spread Spectrum Systems".
[25]
3GPP2 C.S0005-F v1.0: "Upper Layer (Layer 3) Signaling Standard for cdma2000 Spread Spectrum Systems".
[26]
3GPP2 C.S0024-C v2.0: "cdma2000 High Rate Packet Data Air Interface Specification".
[27]
TS 23.003: "Numbering, addressing and identification".
[28]
TS 45.008: "Radio subsystem link control".
[29]
TS 25.133: "Requirements for Support of Radio Resource Management (FDD)".
[30]
TS 25.123: "Requirements for Support of Radio Resource Management (TDD)".
[31]
TS 36.401: "Evolved Universal Terrestrial Radio Access (E-UTRA); Architecture description".
[32]
TS 33.401: "3GPP System Architecture Evolution (SAE); Security architecture".
[33]
3GPP2 A.S0008-C v4.0: "Interoperability Specification (IOS) for High Rate Packet Data (HRPD) Radio Access Network Interfaces with Session Control in the Access Network"
[34]
3GPP2 C.S0004-F v1.0: "Signaling Link Access Control (LAC) Standard for cdma2000 Spread Spectrum Systems"
[35]
TS 24.301: "Non-Access-Stratum (NAS) protocol for Evolved Packet System (EPS); Stage 3".
[36]
TS 44.060: "General Packet Radio Service (GPRS); Mobile Station (MS) - Base Station System (BSS) interface; Radio Link Control/Medium Access Control (RLC/MAC) protocol".
[37]
TS 23.041: "Technical realization of Cell Broadcast Service (CBS)".
[38]
TS 23.038: "Alphabets and Language".
[39]
TS 36.413: "Evolved Universal Terrestrial Radio Access (E-UTRAN); S1 Application Protocol (S1 AP)".
[40]
TS 25.304: "Universal Terrestrial Radio Access (UTRAN); User Equipment (UE) procedures in idle mode and procedures for cell reselection in connected mode".
[41]
TS 23.401: "General Packet Radio Service (GPRS) enhancements for Evolved Universal Terrestrial Radio Access Network (E-UTRAN) access".
[42]
TS 36.101: "Evolved Universal Terrestrial Radio Access (E-UTRA); User Equipment (UE) radio transmission and reception".
[43]
TS 45.005: "GSM/EDGE Radio transmission and reception".
[44]
3GPP2 C.S0087-A v2.0: "E-UTRAN - cdma2000 HRPD Connectivity and Interworking Air Interface Specification"
[45]
TS 44.018: "Mobile radio interface layer 3 specification; Radio Resource Control (RRC) protocol".
[46]
TS 25.223: "Spreading and modulation (TDD)".
[47]
TS 36.104: "Evolved Universal Terrestrial Radio Access (E-UTRA); Base Station (BS) radio transmission and reception".
[48]
TS 36.214: "Evolved Universal Terrestrial Radio Access (E-UTRA); Physical layer - Measurements".
[49]
TS 24.008: "Mobile radio interface layer 3 specification; Core network protocols; Stage 3".
[50]
TS 45.010: "Radio subsystem synchronization".
[51]
TS 23.272: "Circuit Switched Fallback in Evolved Packet System; Stage 2".
[52]
TS 29.061: "Interworking between the Public Land Mobile Network (PLMN) supporting packet based services and Packet Data Networks (PDN)".
[53]
3GPP2 C.S0097-0 v3.0: "E-UTRAN - cdma2000 1x Connectivity and Interworking Air Interface Specification".
[54]
TS 36.355: "LTE Positioning Protocol (LPP)".
[55]
TS 36.216: "Evolved Universal Terrestrial Radio Access (E-UTRA); Physical layer for relaying operation".
[56]
TS 23.246: "Multimedia Broadcast/Multicast Service (MBMS); Architecture and functional description".
[57]
TS 26.346: "Multimedia Broadcast/Multicast Service (MBMS); Protocols and codecs".
[58]
TS 32.422: "Telecommunication management; Subsriber and equipment trace; Trace control and confiuration management".
[59]
TS 22.368: "Service Requirements for Machine Type Communications; Stage 1".
[60]
TS 37.320: "Universal Terrestrial Radio Access (UTRA) and Evolved Universal Terrestrial Radio Access (E-UTRA); Radio measurement collection for Minimization of Drive Tests (MDT); Overall description; Stage 2".
[61]
TS 23.216: "Single Radio Voice Call Continuity (SRVCC); Stage 2".
[62]
TS 22.146: "Multimedia Broadcast/Multicast Service (MBMS); Stage 1".
[63]
TR 36.816: "Evolved Universal Terrestrial Radio Access (E-UTRA); Study on signalling and procedure for interference avoidance for in-device coexistence".
[64]
IS-GPS-200F: "Navstar GPS Space Segment/Navigation User Segment Interfaces".
[65]
TS 25.307: "Requirement on User Equipments (UEs) supporting a release-independent frequency band".
[66]
TS 24.312: "Access Network Discovery and Selection Function (ANDSF) Management Object (MO)".
[67]
IEEE 802.11-2012, Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) specifications, IEEE Std.
[68]
TS 23.303: "Proximity-based services (ProSe); Stage 2".
[69]
TS 24.334: "Proximity-services (ProSe) User Equipment (UE) to ProSe function protocol aspects; Stage 3".
[70]
TS 24.333: "Proximity-services (ProSe) Management Objects (MO)".
[71]
TS 36.314: "Evolved Universal Terrestrial Radio Access (E-UTRA); Layer 2- Measurements".
[72]
TS 24.105: "Application specific Congestion control for Data Communication (ACDC) Management Object (MO)".
[73]
TS 23.179: "Functional architecture and information flows to support mission critical communication services; Stage 2".
[74]
TS 24.302: "Access to the 3GPP Evolved Packet Core (EPC) via non-3GPP access networks".
[75]
TS 23.402: "Architecture enhancements for non-3GPP accesses; Stage-2".
[76]
Wi-Fi Alliance® Technical Committee, Hotspot 2.0 Technical Task Group Hotspot 2.0 (Release 2) Technical Specification Version 3.11.
[77]
TS 22.101: "Service aspects; Service principles".
[78]
TS 23.285: "Technical Specification Group Services and System Aspects; Architecture enhancements for V2X services".
[79]
TS 36.307: "Evolved Universal Terrestrial Radio Access (E-UTRA); Requirements on User Equipments (UEs) supporting a release-independent frequency band".
[80]
Military Standard WGS84 Metric MIL-STD-2401 (11 January 1994): "Military Standard Department of Defence World Geodetic System (WGS)".
[81]
TS 37.340: "NR; Multi-connectivity; Overall description; Stage-2".
[82]
TS 38.331: "NR; Radio Resource Control (RRC); Protocol specification".
[83]
TS 38.323: "NR; Packet Data Convergence Protocol (PDCP) Specification".
[84]
TS 38.133: "NR; Requirements for support of radio resource management".
[85]
TS 38.101-1: "NR; User Equipment (UE) radio transmission and reception; Part 1: Range 1 Standalone ".
[86]
TS 33.501: "Security Architecture and Procedures for 5G System".
[87]
TS 38.306: "NR; UE Radio Access Capabilities".
[88]
TS 38.213: "NR; Physical layer procedures for control".
[89]
TS 38.215: "NR; Physical layer measurements".
[90]
TS 26.247: "Transparent end-to-end Packet-switched Streaming Service (PSS); Progressive Download and Dynamic Adaptive Streaming over HTTP (3GP-DASH)".
[91]
TS 38.104: "NR; Base Station (BS) radio transmission and reception".
[92]
TS 38.304: "NR; User Equipment (UE) procedures in Idle mode and RRC Inactive state".
[93]
Bluetooth Special Interest Group: "Bluetooth Core Specification v5.0", December 2016.
[94]
TS 37.213: "Physical layer procedures for shared spectrum channel access".
[95]
TS 24.501: "Non-Access-Stratum (NAS) protocol for 5G System (5GS); Stage 3".
[96]
TS 22.261: "Service requirements for the 5G System".
[97]
TS 37.324: "Service Data Adaptation Protocol (SDAP) specification".
[98]
ATIS 0700041: "WEA 3.0: Device-Based Geo-Fencing".
[99]
TS 26.114: "IP Multimedia Subsystem (IMS); Multimedia Telephony; Media handling and interaction ".
[100]
TS 38.101-2: "NR; User Equipment (UE) radio transmission and reception; Part 2: Range 2 Standalone ".
[101]
TS 38.101-3: "NR; User Equipment (UE) radio transmission and reception; Part 3: Range 1 and Range 2 Interworking operation with other radios".
[102]
TS 23.502: "Procedures for the 5G System; Stage 2".
[103]
TS 38.314: "NR; layer 2 measurements".
[104]
TS 23.287: "Architecture enhancements for 5G System (5GS) to support Vehicle-to-Everything (V2X) services ".
[105]
TS 38.472: "NG-RAN; F1 signalling transport".
[106]
TS 38.300: "NR; Overall description; Stage 2".
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3  Definitions, symbols and abbreviationsWord‑p. 29

3.1  Definitions

For the purposes of the present document, the terms and definitions given in TR 21.905 and the following apply. A term defined in the present document takes precedence over the definition of the same term, if any, in TR 21.905.
Anchor carrier:
In NB-IoT, a carrier where the UE assumes that NPSS/NSSS/NPBCH/SIB-NB for FDD or NPSS/NSSS/NPBCH for TDD are transmitted.
Bandwidth Reduced:
Refers to operation in downlink and uplink with a limited channel bandwidth of 6 PRBs.
CEIL:
Mathematical function used to 'round up' i.e. to the nearest integer having a higher or equal value.
Cellular IoT EPS Optimisation:
Provides improved support of small data transfer, as defined in TS 24.301.
Commercial Mobile Alert System:
Public Warning System that delivers Warning Notifications provided by Warning Notification Providers to CMAS capable UEs.
Common access barring parameters:
The common access barring parameters refer to the access class barring parameters that are broadcast in SystemInformationBlockType2 outside the list of PLMN specific parameters (i.e. in ac-BarringPerPLMN-List).
Control plane CIoT 5GS optimisation:
Enables support of efficient transport of user data (IP, Ethernet or unstructured) or SMS messages over control plane via the AMF without triggering data radio bearer establishment, as defined in TS 24.501.
Control plane CIoT EPS optimisation:
Enables support of efficient transport of user data (IP, non-IP or SMS) over control plane via the MME without triggering data radio bearer establishment, as defined in TS 24.301.
Control plane EDT:
Early Data Transmission used with the Control plane CIoT EPS optimisation or Control plane CIoT 5GS optimisation.
CSG member cell:
A cell broadcasting the identity of the selected PLMN, registered PLMN or equivalent PLMN and for which the CSG whitelist of the UE includes an entry comprising cell's CSG ID and the respective PLMN identity.
DAPS bearer:
A bearer whose radio protocols are located in both the source eNB and the target eNB during a DAPS handover to use both source eNB and target eNB resources.
Dual Connectivity:
A UE in RRC_CONNECTED is configured with Dual Connectivity when configured with a Master and a Secondary Cell Group.
Early Data Transmission:
Allows one uplink data transmission optionally followed by one downlink data transmission during the random access procedure as specified in TS 36.300. The S1 connection is established or resumed upon reception of the uplink data and may be released or suspended along with the transmission of the downlink data. Early data transmission refers to both CP-EDT and UP-EDT.
Early Security Reactivation:
Re-activation of AS security prior to the transmission of RRCConnectionResumeRequest message when a UE is provided with an NCC value during suspension.
E-UTRA-NR Dual Connectivity:
A form of dual connectivity in which a UE in RRC_CONNECTED is configured with MCG cells using E-UTRA and SCG cells using NR as defined in TS 37.340.
EU-Alert:
Public Warning System that delivers Warning Notifications provided by Warning Notification Providers using the same AS mechanisms as defined for CMAS.
Field:
The individual contents of an information element are referred as fields.
FLOOR:
Mathematical function used to 'round down' i.e. to the nearest integer having a lower or equal value.
Information element:
A structural element containing a single or multiple fields is referred as information element.
Korean Public Alert System (KPAS):
Public Warning System that delivers Warning Notifications provided by Warning Notification Providers using the same AS mechanisms as defined for CMAS.
Master Cell Group:
For a UE not configured with DC, the MCG comprises all serving cells. For a UE configured with DC, the MCG concerns a subset of the serving cells comprising of the PCell and zero or more secondary cells.
Mixed Operation Mode:
In NB-IoT FDD, multi-carrier operation where the anchor carrier is in standalone mode while the non-anchor carrier is in inband or guardand mode, and vice versa. See TS 36.300.
MBMS service:
MBMS bearer service as defined in TS 23.246 (i.e. provided via an MRB or an SC-MRB).
NB-IoT:
NB-IoT allows access to network services via E-UTRA with a channel bandwidth limited to 200 kHz.
NB-IoT UE:
A UE that uses NB-IoT.
NCSG:
Network controlled small gap as defined in TS 36.133.
NR-E-UTRA Dual Connectivity (NE-DC):
A form of dual connectivity in which a UE in RRC_CONNECTED is configured with MCG cells using NR and SCG cells using E-UTRA as defined in TS 37.340.
Non-anchor carrier:
In NB-IoT, a carrier where the UE does not assume that NPSS/NSSS/NPBCH/SIB-NB for FDD or NPSS/NSSS/NPBCH for TDD are transmitted.
NR Carrier Frequency:
Frequency referring to the position of resource element RE=#0 (subcarrier #0) of resource block RB#10 of the SS block.
NR sidelink communication:
AS functionality enabling at least V2X Communication as defined in TS 23.287, between two or more nearby UEs, using NR technology but not traversing any network node.
Primary Cell:
The cell, operating on the primary frequency, in which the UE either performs the initial connection establishment procedure or initiates the connection re-establishment procedure, or the cell indicated as the primary cell in the handover procedure.
Primary Secondary Cell:
The SCG cell in which the UE is instructed to perform random access or initial PUSCH transmission if random access procedure is skipped when performing the SCG change procedure.
Primary Timing Advance Group:
Timing Advance Group containing the PCell or the PSCell.
PUCCH SCell:
An SCell configured with PUCCH.
RLC bearer configuration:
The lower layer part of the radio bearer configuration comprising the RLC and logical channel configurations.
Secondary Cell:
A cell, operating on a secondary frequency, which may be configured once an RRC connection is established and which may be used to provide additional radio resources. Except for the case of (NG)EN-DC, the PSCell is considered to be an SCell.
Secondary Cell Group:
For a UE configured with DC, the subset of serving cells not part of the MCG, i.e. comprising of the PSCell and zero or more other secondary cells.
Secondary Timing Advance Group:
Timing Advance Group neither containing the PCell nor the PSCell. A secondary timing advance group contains at least one cell with configured uplink.
Serving Cell:
For a UE in RRC_CONNECTED not configured with CA/ DC there is only one serving cell comprising of the primary cell. For a UE in RRC_CONNECTED configured with CA/ DC the term 'serving cells' is used to denote the set of one or more cells comprising of the primary cell and all secondary cells.
Sidelink:
UE to UE interface for sidelink communication, V2X sidelink communication and sidelink discovery. The sidelink corresponds to the PC5 interface as defined in TS 23.303.
Sidelink communication:
AS functionality enabling ProSe Direct Communication as defined in TS 23.303, between two or more nearby UEs, using E-UTRA technology but not traversing any network node. In this version, the terminology "sidelink communication" without "V2X" prefix only concerns PS unless specifically stated otherwise.
Sidelink discovery:
AS functionality enabling ProSe Direct Discovery as defined in TS 23.303, using E-UTRA technology but not traversing any network node.
Sidelink operation:
Includes sidelink communication, V2X sidelink communication and sidelink discovery.
Split SRB:
in MR-DC, an SRB between the MN and the UE, allowing selection of either the direct path or the path via the SN as well as duplication of RRC PDUs across both paths as defined in TS 37.340.
Timing Advance Group:
A group of serving cells that is configured by RRC and that, for the cells with an UL configured, use the same timing reference cell and the same Timing Advance value. A Timing Advance Group only includes cells of the same cell group i.e. it either includes MCG cells or SCG cells.
Transmission using PUR:
Allows one uplink data transmission using preconfigured uplink resource from RRC_IDLE mode as specified in TS 36.300. Transmission using PUR refers to both CP transmission using PUR and UP transmission using PUR.
UE Inactive AS Context:
UE Inactive AS Context is stored when the connection is suspended and restored when the connection is resumed. It includes information as defined in clause 5.3.8.7.
UE in CE:
Refers to a UE that is capable of using coverage enhancement, and requires coverage enhancement mode to access a cell or is configured in a coverage enhancement mode.
User plane CIoT 5GS optimisation:
Enables support for change from 5GMM-IDLE mode to 5GMM-CONNECTED mode without the need for using the Service Request procedure, as defined in TS 24.501.
User plane CIoT EPS optimisation:
Enables support for change from EMM-IDLE mode to EMM-CONNECTED mode without the need for using the Service Request procedure, as defined in TS 24.301.
User plane EDT:
Early Data Transmission used with the User plane CIoT EPS optimisation or User plane CIoT 5GS optimisation.
V2X Sidelink communication:
AS functionality enabling V2X Communication as defined in TS 23.285, between nearby UEs, using E-UTRA technology but not traversing any network node.
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3.2  AbbreviationsWord‑p. 32
For the purposes of the present document, the abbreviations given in TR 21.905, TS 36.300 and the following apply. An abbreviation defined in the present document takes precedence over the definition of the same abbreviation, if any, in TR 21.905 or TS 36.300.
1xRTT
CDMA2000 1x Radio Transmission Technology
AB
Access Barring
ACDC
Application specific Congestion control for Data Communication
ACK
Acknowledgement
AILC
Assistance Information bit for Local Cache
AM
Acknowledged Mode
ANDSF
Access Network Discovery and Selection Function
ARQ
Automatic Repeat Request
AS
Access Stratum
ASN.1
Abstract Syntax Notation One
AUL
Autonomous Uplink
BCCH
Broadcast Control Channel
BCD
Binary Coded Decimal
BCH
Broadcast Channel
BL
Bandwidth reduced Low complexity
BLER
Block Error Rate
BR
Bandwidth Reduced
BR-BCCH
Bandwidth Reduced Broadcast Control Channel
CA
Carrier Aggregation
CAS
Cell Acquisition Subframes
CBR
Channel Busy Ratio
CCCH
Common Control Channel
CCO
Cell Change Order
CE
Coverage Enhancement
CFI
Control Format Indicator
CG
Cell Group
CHO
Conditional Handover
CIoT
Cellular IoT
CMAS
Commercial Mobile Alert Service
CP
Control Plane
CPC
Conditional PSCell Change
CP-EDT
Control Plane EDT
C-RNTI
Cell RNTI
CRS
Cell-specific Reference Signal
CSFB
CS fallback
CSG
Closed Subscriber Group
CSI
Channel State Information
DAPS
Dual Active Protocol Stack
DC
Dual Connectivity
DCCH
Dedicated Control Channel
DCI
Downlink Control Information
DCN
Dedicated Core Networks
DFN
Direct Frame Number
DL
Downlink
DL-SCH
Downlink Shared Channel
DRB
(user) Data Radio Bearer
DRX
Discontinuous Reception
DTCH
Dedicated Traffic Channel
EAB
Extended Access Barring
eDRX
Extended DRX
EDT
Early Data Transmission
EHPLMN
Equivalent Home Public Land Mobile Network
eIMTA
Enhanced Interference Management and Traffic Adaptation
ENB
Evolved Node B
EN-DC
E-UTRA NR Dual Connectivity with E-UTRAN connected to EPC
EPC
Evolved Packet Core
EPDCCH
Enhanced Physical Downlink Control Channel
EPS
Evolved Packet System
ETWS
Earthquake and Tsunami Warning System
E-UTRA
Evolved Universal Terrestrial Radio Access
E-UTRA/5GC
E-UTRA connected to 5GC
E-UTRA/EPC
E-UTRA connected to EPC
E-UTRAN
Evolved Universal Terrestrial Radio Access Network
FDD
Frequency Division Duplex
FFS
For Further Study
GERAN
GSM/EDGE Radio Access Network
GNSS
Global Navigation Satellite System
G-RNTI
Group RNTI
GSM
Global System for Mobile Communications
GWUS
Group Wake Up Signal
HARQ
Hybrid Automatic Repeat Request
HFN
Hyper Frame Number
HPLMN
Home Public Land Mobile Network
HRPD
CDMA2000 High Rate Packet Data
HSDN
High Speed Dedicated Network
H-SFN
Hyper SFN
IAB
Integrated Access and Backhaul
IAB-DU
IAB-node DU
IAB-MT
IAB Mobile Termination
IDC
In-Device Coexistence
IE
Information element
IMEI
International Mobile Equipment Identity
IMSI
International Mobile Subscriber Identity
IoT
Internet of Things
ISM
Industrial, Scientific and Medical
kB
Kilobyte (1000 bytes)
L1
Layer 1
L2
Layer 2
L3
Layer 3
LAA
Licensed-Assisted Access
LWA
LTE-WLAN Aggregation
LWAAP
LTE-WLAN Aggregation Adaptation Protocol
LWIP
LTE-WLAN Radio Level Integration with IPsec Tunnel
MAC
Medium Access Control
MBMS
Multimedia Broadcast Multicast Service
MBSFN
Multimedia Broadcast multicast service Single Frequency Network
MCG
Master Cell Group
MCOT
Maximum Channel Occupancy Time
MCPTT
Mission Critical Push To Talk
MDT
Minimization of Drive Tests
MIB
Master Information Block
MO
Mobile Originating
MPDCCH
MTC Physical Downlink Control Channel
MRB
MBMS Point to Multipoint Radio Bearer
MR-DC
Multi-Radio Dual Connectivity
MRO
Mobility Robustness Optimisation
MSI
MCH Scheduling Information
MT
Mobile Terminating
MTSI
Multimedia Telephony Service for IMS
MUST
MultiUser Superposition Transmission
N/A
Not Applicable
NACC
Network Assisted Cell Change
NAICS
Network Assisted Interference Cancellation/Suppression
NAS
Non Access Stratum
NB-IoT
NarrowBand Internet of Things
NE-DC
NR E-UTRA Dual Connectivity
(NG)EN-DC
E-UTRA NR Dual Connectivity (i.e. covering both EN-DC and NGEN-DC)
NGEN-DC
E-UTRA NR Dual Connectivity with E-UTRAN connected to 5GC
NPBCH
Narrowband Physical Broadcast channel
NPDCCH
Narrowband Physical Downlink Control channel
NPDSCH
Narrowband Physical Downlink Shared channel
NPRACH
Narrowband Physical Random Access channel
NPSS
Narrowband Primary Synchronization Signal
NPUSCH
Narrowband Physical Uplink Shared channel
NR
NR Radio Access
NRS
Narrowband Reference Signal
NSSAI
Network Slice Selection Assistance Information
NSSS
Narrowband Secondary Synchronization Signal
OS
OFDM Symbol
P2X
Pedestrian-to-Everything
PCCH
Paging Control Channel
PCell
Primary Cell
PDCCH
Physical Downlink Control Channel
PDCP
Packet Data Convergence Protocol
PDU
Protocol Data Unit
PLMN
Public Land Mobile Network
PMK
Pairwise Master Key
PO
Paging Occasion
posSIB
Positioning SIB
ProSe
Proximity based Services
PS
Public Safety (in context of sidelink), Packet Switched (otherwise)
PSCell
Primary Secondary Cell
PSK
Pre-Shared Key
PTAG
Primary Timing Advance Group
PUCCH
Physical Uplink Control Channel
PUR
Preconfigured Uplink Resource
QCI
QoS Class Identifier
QoE
Quality of Experience
QoS
Quality of Service
RACH
Random Access CHannel
RAI
Release Assistance Indication
RAT
Radio Access Technology
RB
Radio Bearer
RCLWI
RAN Controlled LTE-WLAN Integration
RLC
Radio Link Control
RLOS
Restricted Local Operator Services
RMTC
RSSI Measurement Timing Configuration
RN
Relay Node
RNA
RAN-based Notification Area
RNAU
RAN-based Notification Area Update
RNTI
Radio Network Temporary Identifier
ROHC
RObust Header Compression
RPLMN
Registered Public Land Mobile Network
RRC
Radio Resource Control
RSCP
Received Signal Code Power
RSRP
Reference Signal Received Power
RSRQ
Reference Signal Received Quality
RSS
Resynchronisation signal
RSSI
Received Signal Strength Indicator
SAE
System Architecture Evolution
SAP
Service Access Point
SBAS
Satellite Based Augmentation System
SC
Sidelink Control
SCell
Secondary Cell
SCG
Secondary Cell Group
SC-MRB
Single Cell MRB
SC-RNTI
Single Cell RNTI
SD-RSRP
Sidelink Discovery Reference Signal Received Power
SFN
System Frame Number
SI
System Information
SIB
System Information Block
SI-RNTI
System Information RNTI
SL
Sidelink
SLSS
Sidelink Synchronisation Signal
SMC
Security Mode Control
SPDCCH
Short PDCCH
SPS
Semi-Persistent Scheduling
SPT
Short Processing Time
SPUCCH
Short PUCCH
SR
Scheduling Request
SRB
Signalling Radio Bearer
S-RSRP
Sidelink Reference Signal Received Power
SSAC
Service Specific Access Control
SSTD
SFN and Subframe Timing Difference
STAG
Secondary Timing Advance Group
S-TMSI
SAE Temporary Mobile Station Identifier
STTI
Short TTI
TA
Tracking Area
TAG
Timing Advance Group
TDD
Time Division Duplex
TDM
Time Division Multiplexing
TM
Transparent Mode
TPC-RNTI
Transmit Power Control RNTI
T-RPT
Time Resource Pattern of Transmission
TTI
Transmission Time Interval
TTT
Time To Trigger
UDC
Uplink Data Compression
UE
User Equipment
UICC
Universal Integrated Circuit Card
UL
Uplink
UL-SCH
Uplink Shared Channel
UM
Unacknowledged Mode
UP
User Plane
UP-EDT
User Plane EDT
UTC
Coordinated Universal Time
UTRAN
Universal Terrestrial Radio Access Network
V2X
Vehicle-to-Everything
VoLTE
Voice over Long Term Evolution
WLAN
Wireless Local Area Network
WT
WLAN Termination
WUS
Wake-up Signal
In the ASN.1, lower case may be used for some (parts) of the above abbreviations e.g. c-RNTI.
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