Content for TS 36.300 Word version: 18.2.0
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1 Scope p. 20
The present document provides an overview and overall description of the E-UTRAN radio interface protocol architecture. Details of the radio interface protocols are specified in companion specifications of the 36 series. For Multi-Connectivity involving E-UTRAN, the differences relative to E-UTRA and E-UTRAN are specified in TS 37.340.
2 References p. 20
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]
TR 25.913: "Requirements for Evolved UTRA (E-UTRA) and Evolved UTRAN (E-UTRAN)".
[3]
TS 36.201: "Evolved Universal Terrestrial Radio Access (E-UTRA); Physical layer; General description".
[4]
TS 36.211: "Evolved Universal Terrestrial Radio Access (E-UTRA); Physical Channels and Modulation".
[5]
TS 36.212: "Evolved Universal Terrestrial Radio Access (E-UTRA); Multiplexing and channel coding".
[6]
TS 36.213: "Evolved Universal Terrestrial Radio Access (E-UTRA); Physical layer procedures".
[7]
TS 36.214: "Evolved Universal Terrestrial Radio Access (E-UTRA); Physical layer; Measurements".
[8]
RFC 4960 (09/2007): "Stream Control Transmission Protocol".
[9]
TS 36.302: "Evolved Universal Terrestrial Radio Access (E-UTRA); Services provided by the physical layer".
[10] Void
[11]
TS 36.304: "Evolved Universal Terrestrial Radio Access (E-UTRA); User Equipment (UE) procedures in idle mode".
[12]
TS 36.306: "Evolved Universal Terrestrial Radio Access (E-UTRA); User Equipment (UE) radio access capabilities".
[13]
TS 36.321: "Evolved Universal Terrestrial Radio Access (E-UTRA); Medium Access Control (MAC) protocol specification".
[14]
TS 36.322: "Evolved Universal Terrestrial Radio Access (E-UTRA); Radio Link Control (RLC) protocol specification".
[15]
TS 36.323: "Evolved Universal Terrestrial Radio Access (E-UTRA); Packet Data Convergence Protocol (PDCP) specification".
[16]
TS 36.331: "Evolved Universal Terrestrial Radio Access (E-UTRA); Radio Resource Control (RRC) protocol specification".
[17]
TS 23.401: "Technical Specification Group Services and System Aspects; GPRS enhancements for E-UTRAN access".
[18]
TR 24.801: "3GPP System Architecture Evolution (SAE); CT WG1 aspects".
[19]
TS 23.402: "3GPP System Architecture Evolution: Architecture Enhancements for non-3GPP accesses".
[20]
TS 24.301: "Non-Access-Stratum (NAS) protocol for Evolved Packet System (EPS); Stage 3".
[21]
TS 36.133: "Evolved Universal Terrestrial Radio Access (E-UTRA); "Requirements for support of radio resource management".
[22]
TS 33.401: "3GPP System Architecture Evolution: Security Architecture".
[23]
TS 23.272: "Circuit Switched Fallback in Evolved Packet System; Stage 2".
[24] Void.
[25]
TS 36.413: "Evolved Universal Terrestrial Radio Access Network (E-UTRAN); S1 Application Protocol (S1AP)".
[26]
TS 23.003: "Numbering, addressing and identification".
[27]
TR 25.922: "Radio Resource Management Strategies".
[28]
TS 23.216: "Single Radio voice Call continuity (SRVCC); Stage 2".
[29]
TS 32.421: "Subscriber and equipment trace: Trace concepts and requirements".
[30]
TS 32.422: "Subscriber and equipment trace; Trace control and configuration management".
[31]
TS 32.423: "Subscriber and equipment trace: Trace data definition and management".
[32] Void.
[33]
TS 22.220: "Service Requirements for Home NodeBs and Home eNodeBs".
[34]
TS 22.268: "Public Warning System (PWS) Requirements".
[35]
RFC 3168 (09/2001): "The Addition of Explicit Congestion Notification (ECN) to IP".
[36]
TS 25.446: "MBMS synchronisation protocol (SYNC)".
[37]
TS 22.168: "Earthquake and Tsunami Warning System (ETWS) requirements; Stage 1".
[38] Void.
[39] Void.
[40]
TS 29.274: "Tunnelling Protocol for Control Plane (GTPv2-C); Stage 3".
[41]
TS 29.061: "Interworking between the Public Land Mobile Network (PLMN) supporting packet based services and Packet Data Networks (PDN)".
[42]
TS 36.423: "Evolved Universal Terrestrial Radio Access Network (E-UTRAN); X2 Application Protocol (X2AP)".
[43]
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".
[44]
TS 36.443: "Evolved Universal Terrestrial Radio Access Network (E-UTRAN); M2 Application Protocol (M2AP)".
[45]
TS 36.444: "Evolved Universal Terrestrial Radio Access Network (E-UTRAN); M3 Application Protocol (M3AP)".
[46]
TS 36.420: "Evolved Universal Terrestrial Radio Access Network (E-UTRAN); X2 general aspects and principles".
[47]
TS 29.281: "General Packet Radio System (GPRS) Tunnelling Protocol User Plane (GTPv1-U)"
[48]
TS 23.246: "Multimedia Broadcast/Multicast Service (MBMS); Architecture and functional description"
[49]
TS 26.346: "Multimedia Broadcast/Multicast Service (MBMS); Protocols and codecs"
[50]
TR 36.816: "Evolved Universal Terrestrial Radio Access (E-UTRA); Study on signalling and procedure for interference avoidance for in-device coexistence".
[51]
TS 36.305: "Evolved Universal Terrestrial Radio Access Network (E-UTRAN); Stage 2 functional specifications of User Equipment (UE) positioning in E-UTRAN".
[52]
TS 36.101: "Evolved Universal Terrestrial Radio Access (E-UTRA); User Equipment (UE) radio transmission and reception".
[53]
TS 33.320: "Security of Home Node B (HNB) / Home evolved Node B (HeNB)".
[54]
TS 23.251: "Technical Specification Group Services and System Aspects; Network Sharing; Architecture and functional description".
[55]
TS 23.139: "3GPP system - fixed broadband access network interworking".
[56]
TS 23.007: "Technical Specification Group Core Network and Terminals; Restoration procedures".
[57]
TS 23.682: "Architecture enhancements to facilitate communications with packet data networks and applications".
[58]
TS 24.312: "Access Network Discovery and Selection Function (ANDSF) Management Object (MO)".
[59]
TR 36.842: "Study on Small Cell enhancements for E-UTRA and E-UTRAN; Higher layer aspects"
[60]
TR 36.932: "Scenarios and Requirements for Small Cell Enhancements for E-UTRA and E-UTRAN".
[61]
TS 36.425: "Evolved Universal Terrestrial Radio Access Network (E-UTRAN); X2 interface user plane protocol".
[62]
TS 23.303: "Technical Specification Group Services and System Aspects; Proximity-based services (ProSe)"
[63]
TS 36.314: "Evolved Universal Terrestrial Radio Access (E-UTRA); Layer 2 - Measurements".
[64]
TR 36.889: "Study on Licensed-Assisted Access to Unlicensed Spectrum".
[65]
IEEE 802.11, Part 11: "Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) specifications, IEEE Std.".
[66]
TS 36.360: "LTE-WLAN Aggregation Adaptation Protocol (LWAAP) specification".
[67]
TS 24.302: "Access to the 3GPP Evolved Packet Core (EPC) via non-3GPP access networks".
[68]
TS 36.361: "LTE/WLAN Radio Level Integration Using IPsec Tunnel (LWIP) encapsulation; Protocol specification".
[69]
TS 36.463: "Evolved Universal Terrestrial Radio Access Network (E-UTRAN) and Wireless LAN (WLAN); Xw application protocol (XwAP)".
[70]
TS 33.402: "3GPP System Architecture Evolution (SAE); Security aspects of non-3GPP accesses".
[71]
TS 22.185: "Service requirements for V2X services; Stage 1".
[72]
TS 23.285: "Technical Specification Group Services and System Aspects; Architecture enhancements for V2X services".
[73]
RFC 7567 "IETF Recommendations Regarding Active Queue Management".
[74]
TS 26.114: "Technical Specification Group Services and System Aspects; IP Multimedia Subsystem (IMS); Multimedia Telephony; Media handling and interaction".
[75]
TS 24.386: "User Equipment (UE) to V2X control function; protocol aspects; Stage 3".
[76]
TS 37.340: "Evolved Universal Terrestrial Radio Access (E-UTRA) and NR; Multi-connectivity".
[77]
TS 23.280: "Common functional architecture to support mission critical services; Stage 2".
[78]
TS 36.355: " Evolved Universal Terrestrial Radio Access (E-UTRA);LTE Positioning Protocol (LPP)".
[79]
TS 38.300: "NR; NR and NG-RAN Overall Description, Stage 2".
[80]
TS 37.324: "NR; Service Data Protocol (SDAP) specification".
[81]
TS 38.323: "NR; Packet Data Convergence Protocol (PDCP) specification".
[82]
TS 23.501: "System Architecture for the 5G System; Stage 2".
[83]
TS 23.502: "Procedures for the 5G System; Stage 2".
[84]
TS 29.002: "Mobile Application Part (MAP) specification".
[85]
TS 25.412: "UTRAN Iu interface signalling transport".
[86]
TS 38.423: "NG-RAN; Xn Application Protocol (XnAP)".
[87] Void
[88]
TS 38.101-1: "NR; User Equipment (UE) radio transmission and reception; Part 1: Range 1 Standalone".
[89]
TS 38.306: "NR; User Equipment (UE) radio access capabilities".
[90]
TS 37.213: "Physical layer procedures for shared spectrum channel access".
[91]
TS 24.501: "Non-Access-Stratum (NAS) protocol for 5G System (5GS); Stage 3".
[92]
TS 38.331: "NR; Radio Resource Control (RRC); Protocol specification".
[93]
TS 23.287: "Architecture enhancements for 5G System (5GS) to support Vehicle-to-Everything (V2X) services ".
[94]
TS 23.122: "Non-Access-Stratum (NAS) functions related to Mobile Station (MS) in idle mode".
[95]
TS 36.410: "Evolved Universal Terrestrial Radio Access Network (E-UTRAN); S1 general aspects and principles".
3 Definitions, symbols and abbreviations p. 24
3.1 Definitions p. 24
For the purposes of the present document, the following terms and definitions apply.
A2X communication:
A communication to support A2X services leveraging PC5 reference points. A2X services are realized by various types of A2X applications, e.g. BRID or DAA.
Access Control:
the process that checks whether a UE is allowed to access and to be granted services in a closed cell.
Aerial UE communication:
functionality enabling Aerial UE function as defined in 23.17.
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.
Carrier frequency:
center frequency of the cell.
Cell:
combination of downlink and optionally uplink resources. The linking between the carrier frequency of the downlink resources and the carrier frequency of the uplink resources is indicated in the system information transmitted on the downlink resources.
Cell Group:
in dual connectivity, a group of serving cells associated with either the MeNB or the SeNB.
CHO candidate cell:
a candidate cell for CHO, for which UE has been configured with a CHO configuration.
Conditional Handover (CHO):
a handover procedure that is executed only when execution condition(s) are met.
Control plane CIoT 5GS Optimisation:
Enables support of efficient transport of user data (IP, Ethernet and Unstructured) or SMS messages over control plane via the AMF without triggering user-plane resource establishment, as defined in TS 24.501. In the context of this specification, a NB-IoT UE that only supports Control plane CIoT 5GS Optimisation is a UE that does not support User plane CIoT 5GS Optimisation and NG-U data transfer but may support other CIoT 5GS Optimisations.
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. In the context of this specification, a NB-IoT UE that only supports Control plane CIoT EPS optimisation is a UE that does not support User plane CIoT EPS optimisation and S1-U data transfer but may support other CIoT EPS optimisations.
CSG Cell:
a cell broadcasting a CSG indicator set to true and a specific CSG identity.
CSG ID Validation:
the process that checks whether the CSG ID received via handover messages is the same as the one broadcast by the target E-UTRAN.
CSG member cell:
a cell broadcasting the identity of the selected PLMN, registered PLMN or equivalent PLMN and for which the Permitted CSG list of the UE includes an entry comprising cell's CSG ID and the respective PLMN identity.
DAPS Handover:
a handover procedure that maintains the source eNB connection after reception of RRC message for handover and until releasing the source cell after successful random access to the target eNB.
DCN-ID:
DCN identity identifies a specific dedicated core network (DCN).
Dual Connectivity:
mode of operation of a UE in RRC_CONNECTED, configured with a Master Cell Group and a Secondary Cell Group.
Early Data Forwarding:
data forwarding that is initiated before the UE executes the handover.
en-gNB:
as defined in TS 37.340.
Ephemeris:
a set of parameters that describe the movement of an NTN node over time.
E-RAB:
an E-RAB uniquely identifies the concatenation of an S1 Bearer and the corresponding Data Radio Bearer. When an E-RAB exists, there is a one-to-one mapping between this E-RAB and an EPS bearer of the Non Access Stratum as defined in [17].
Feeder link:
wireless link between the NTN Gateway and the NTN payload.
Frequency layer:
set of cells with the same carrier frequency.
FeMBMS:
further enhanced multimedia broadcast multicast service.
FeMBMS/Unicast-mixed cell:
cell supporting MBMS transmission and unicast transmission as SCell.
Geosynchronous Orbit:
Earth-centred orbit at approximately 35,786 kilometres in altitude above Earth's surface and synchronised with Earth's rotation. A geostationary orbit is a non-inclined geosynchronous orbit, i.e in the Earth's equator plane.
Handover:
procedure that changes the serving cell of a UE in RRC_CONNECTED.
Hybrid cell:
a cell broadcasting a CSG indicator set to false and a specific CSG identity. This cell is accessible as a CSG cell by UEs which are members of the CSG and as a normal cell by all other UEs.
Late Data Forwarding:
data forwarding that is initiated after the source eNB knows that the UE has successfully accessed a target eNB.
Local Home Network:
as defined in TS 23.401.
LTE bearer:
in LTE-WLAN Aggregation, a bearer whose radio protocols are located in the eNB only to use eNB radio resources only.
LWA bearer:
in LTE-WLAN Aggregation, a bearer whose radio protocols are located in both the eNB and the WLAN to use both eNB and WLAN resources.
LWAAP PDU:
in LTE-WLAN Aggregation, a PDU with DRB ID generated by LWAAP entity for transmission over WLAN.
Make-Before-Break HO/SeNB change:
maintaining source eNB/SeNB connection after reception of RRC message for handover or change of SeNB before the initial uplink transmission to the target eNB during handover or change of SeNB.
Mapped Cell ID:
in NTN, it corresponds to a fixed geographical area.
Master Cell Group:
in dual connectivity, a group of serving cells associated with the MeNB, comprising of the PCell and optionally one or more SCells.
Master eNB:
in dual connectivity, the eNB which terminates at least S1-MME.
MBMS-dedicated cell:
cell dedicated to MBMS transmission.
MBMS/Unicast-mixed cell:
cell supporting both unicast and MBMS transmissions.
MCG bearer:
in dual connectivity, a bearer whose radio protocols are only located in the MeNB to use MeNB resources only.
Membership Verification:
the process that checks whether a UE is a member or non-member of a hybrid cell.
Multi-Connectivity:
Mode of operation whereby a multiple Rx/Tx UE in the connected mode is configured to utilise radio resources amongst E-UTRA and/or NR provided by multiple distinct schedulers connected via non-ideal backhaul.
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.
ng-eNB:
node providing E-UTRA user plane and control plane protocol terminations towards the UE, and connected via the NG interface to the 5GC.
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.
Non-geosynchronous orbit:
Earth-centred orbit with an orbital period that does not match Earth's rotation on its axis. This includes Low Earth Orbit (LEO) and Medium Earth Orbit (MEO).
Non-terrestrial networks:
an E-UTRAN consisting of eNBs, which provide non-terrestrial LTE access to UEs by means of an NTN payload embarked on a space-borne NTN vehicle and an NTN Gateway.
NR:
NR radio access
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.
NTN Gateway:
an earth station located at the surface of the earth, providing connectivity to the NTN payload using the feeder link. An NTN Gateway is a TNL node.
NTN payload:
a network node, embarked on board a satellite or high altitude platform station, providing connectivity functions, between the service link and the feeder link. In the current version of this specification, the NTN payload is a TNL node.
PLMN ID Check:
the process that checks whether a PLMN ID is the RPLMN identity or an EPLMN identity of the UE.
Power saving mode:
mode configured and controlled by NAS that allows the UE to reduce its power consumption, as defined in TS 24.301, TS 23.401, TS 23.682.
Primary PUCCH group:
a group of serving cells including PCell whose PUCCH signalling is associated with the PUCCH on PCell.
Primary Timing Advance Group:
Timing Advance Group containing the PCell. In this specification, Primary Timing Advance Group refers also to Timing Advance Group containing the PSCell unless explicitly stated otherwise.
ProSe-enabled Public Safety UE:
a UE that the HPLMN has configured to be authorized for Public Safety use, and which is ProSe-enabled and supports ProSe procedures and capabilities specific to Public Safety. The UE may, but need not, have a USIM with one of the special access classes {12, 13, 14}.
ProSe Per-Packet Priority:
a scalar value associated with a protocol data unit that defines the priority handling to be applied for transmission of that protocol data unit.
ProSe UE-to-Network Relay:
a UE that provides functionality to support connectivity to the network for Remote UE(s).
ProSe UE-to-Network Relay Selection:
Process of identifying a potential ProSe UE-to Network Relay, which can be used for connectivity services (e.g. to communicate with a PDN).
ProSe UE-to-Network Relay Reselection:
process of changing previously selected ProSe UE-to-Network Relay and identifying potential a new ProSe UE-to-Network Relay, which can be be used for connectivity services (e.g. to communicate with PDN).
Public Safety ProSe Carrier:
carrier frequency for public safety sidelink communication and public safety sidelink discovery.
PUCCH group:
either primary PUCCH group or a secondary PUCCH group.
PUCCH SCell:
a Secondary Cell configured with PUCCH.
RACH-less HO/SeNB change:
skipping random access procedure during handover or change of SeNB.
Receive Only Mode:
See TS 23.246.
Remote UE:
a ProSe-enabled Public Safety UE, that communicates with a PDN via a ProSe UE-to-Network Relay.
Satellite:
a space-borne vehicle orbiting the Earth that carries the NTN payload.
SCG bearer:
in dual connectivity, a bearer whose radio protocols are only located in the SeNB to use SeNB resources.
Secondary Cell Group:
in dual connectivity, a group of serving cells associated with the SeNB, comprising of PSCell and optionally one or more SCells.
Secondary eNB:
in dual connectivity, the eNB that is providing additional radio resources for the UE but is not the Master eNB.
Secondary PUCCH group:
a group of SCells whose PUCCH signalling is associated with the PUCCH on the PUCCH SCell.
Secondary Timing Advance Group:
Timing Advance Group containing neither the PCell nor PSCell.
Service link:
wireless link between the NTN payload and the UE.
Short Processing Time:
For 1 ms TTI length, the operation with short processing time in UL data transmission and DL data reception.
Short TTI:
TTI length based on a slot or a subslot.
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 Control period:
period over which resources are allocated in a cell for sidelink control information and sidelink data transmissions. The Sidelink Control period corresponds to the PSCCH period as defined in TS 36.213.
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.
Split bearer:
in dual connectivity, a bearer whose radio protocols are located in both the MeNB and the SeNB to use both MeNB and SeNB resources.
Split LWA bearer:
in LTE-WLAN Aggregation, a bearer whose radio protocols are located in both the eNB and the WLAN to use both eNB and WLAN radio resources.
Switched LWA bearer:
in LTE-WLAN Aggregation, a bearer whose radio protocols are located in both the eNB and the WLAN but uses WLAN radio resources only.
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.
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.
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.
WLAN Termination:
the logical node that terminates the Xw interface on the WLAN side.
3.2 Abbreviations p. 27
For the purposes of the present document, the abbreviations given in TR 21.905 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.
1xCSFB
Circuit Switched Fallback to 1xRTT
5GC
5G Core Network
A2X
Aircraft-to-Everything
ABS
Almost Blank Subframe
AC
Access Category
ACK
Acknowledgement
ACLR
Adjacent Channel Leakage Ratio
AM
Acknowledged Mode
AMBR
Aggregate Maximum Bit Rate
ANDSF
Access Network Discovery and Selection Function
ANR
Automatic Neighbour Relation
ARP
Allocation and Retention Priority
ARQ
Automatic Repeat Request
AS
Access Stratum
AUL
Autonomous Uplink
BCCH
Broadcast Control Channel
BCH
Broadcast Channel
BL
Bandwidth reduced Low complexity
BR-BCCH
Bandwidth Reduced Broadcast Control Channel
BRID
Broadcast Remote Identification
BSR
Buffer Status Report
C/I
Carrier-to-Interference Power Ratio
CA
Carrier Aggregation
CAZAC
Constant Amplitude Zero Auto-Correlation
CBC
Cell Broadcast Center
CC
Component Carrier
CG
Cell Group
CHO
Conditional Handover
CIF
Carrier Indicator Field
CIoT
Cellular Internet of Things
CMAS
Commercial Mobile Alert Service
CMC
Connection Mobility Control
C-plane
Control Plane
C-RNTI
Cell RNTI
CoMP
Coordinated Multi Point
CP
Cyclic Prefix
CQI
Channel Quality Indicator
CRC
Cyclic Redundancy Check
CRE
Cell Range Extension
CRS
Cell-specific Reference Signal
CSA
Common Subframe Allocation
CSG
Closed Subscriber Group
CSI
Channel State Information
CSI-IM
CSI interference measurement
CSI-RS
CSI reference signal
DAA
Detect and Avoid
DAPS
Dual Active Protocol Stack
DC
Dual Connectivity
DCCH
Dedicated Control Channel
DCN
Dedicated Core Network
DeNB
Donor eNB
DFTS
DFT Spread OFDM
DL
Downlink
DMTC
Discovery Signal Measurement Timing Configuration
DRB
Data Radio Bearer
DRS
Discovery Reference Signal
DRX
Discontinuous Reception
DTCH
Dedicated Traffic Channel
DTX
Discontinuous Transmission
DwPTS
Downlink Pilot Time Slot
E-CID
Enhanced Cell-ID (positioning method)
E-RAB
E-UTRAN Radio Access Bearer
E-UTRA
Evolved UTRA
E-UTRAN
Evolved UTRAN
EAB
Extended Access Barring
ECGI
E-UTRAN Cell Global Identifier
ECM
EPS Connection Management
EDT
Early Data Transmission
EHC
Ethernet Header Compression
eHRPD
enhanced High Rate Packet Data
eIMTA
Enhanced Interference Management and Traffic Adaptation
EMM
EPS Mobility Management
eNB
E-UTRAN NodeB
EPC
Evolved Packet Core
EPDCCH
Enhanced Physical Downlink Control Channel
EPS
Evolved Packet System
ETWS
Earthquake and Tsunami Warning System
FDD
Frequency Division Duplex
FDM
Frequency Division Multiplexing
G-RNTI
Group RNTI
GBR
Guaranteed Bit Rate
GERAN
GSM EDGE Radio Access Network
GNSS
Global Navigation Satellite System
GP
Guard Period
GRE
Generic Routing Encapsulation
GSM
Global System for Mobile communication
GSO
Geosynchronous Orbit
GUMMEI
Globally Unique MME Identifier
GUTI
Globally Unique Temporary Identifier
GWCN
GateWay Core Network
GWUS
Group Wake Up Signal
H-SFN
Hyper System Frame Number
HARQ
Hybrid ARQ
(H)eNB
eNB or HeNB
HO
Handover
HPLMN
Home Public Land Mobile Network
HRPD
High Rate Packet Data
HSDPA
High Speed Downlink Packet Access
ICIC
Inter-Cell Interference Coordination
IDC
In-Device Coexistence
IP
Internet Protocol
ISM
Industrial, Scientific and Medical
KPAS
Korean Public Alert System
L-GW
Local Gateway
LAA
Licensed-Assisted Access
LB
Load Balancing
LBT
Listen Before Talk
LCG
Logical Channel Group
LCR
Low Chip Rate
LCS
LoCation Service
LEO
Low Earth Orbit
LHN
Local Home Network
LHN ID
Local Home Network ID
LIPA
Local IP Access
LMU
Location Measurement Unit
LPPa
LTE Positioning Protocol Annex
LTE
Long Term Evolution
LWA
LTE-WLAN Aggregation
LWAAP
LTE-WLAN Aggregation Adaptation Protocol
LWIP
LTE WLAN Radio Level Integration with IPsec Tunnel
LWIP-SeGW
LWIP Security Gateway
MAC
Medium Access Control
MBMS
Multimedia Broadcast Multicast Service
MBR
Maximum Bit Rate
MBSFN
Multimedia Broadcast multicast service Single Frequency Network
MCCH
Multicast Control Channel
MCE
Multi-cell/multicast Coordination Entity
MCG
Master Cell Group
MCH
Multicast Channel
MCS
Modulation and Coding Scheme
MDT
Minimization of Drive Tests
MeNB
Master eNB
MEO
Medium Earth Orbit
MGW
Media Gateway
MIB
Master Information Block
MIMO
Multiple Input Multiple Output
MME
Mobility Management Entity
MMTEL
Multimedia telephony
MO-EDT
Mobile Originated Early Data Transmission
MPDCCH
MTC Physical Downlink Control Channel
MSA
MCH Subframe Allocation
MSI
MCH Scheduling Information
MSP
MCH Scheduling Period
MT-EDT
Mobile Terminated Early Data Transmission
MTC
Machine-Type Communications
MTCH
Multicast Traffic Channel
MTSI
Multimedia Telephony Service for IMS
MUSIM
Multi-Universal Subscriber Identity Module
N2
Reference point between the NG-RAN and the AMF
NACK
Negative Acknowledgement
NAS
Non-Access Stratum
NB-IoT
Narrow Band Internet of Things
NCC
Next Hop Chaining Counter
NCGI
NR Cell Global Identifier
NCR
Neighbour Cell Relation
NG-RAN
NG Radio Access Network
NGSO
Non-Geosynchronous Orbit
NH
Next Hop key
NNSF
NAS Node Selection Function
NPBCH
Narrowband Physical Broadcast channel
NPDCCH
Narrowband Physical Downlink Control channel
NPDSCH
Narrowband Physical Downlink Shared channel
NPRACH
Narrowband Physical Random Access channel
NPUSCH
Narrowband Physical Uplink Shared channel
NPRS
Narrowband Positioning Reference Signal
NPSS
Narrowband Primary Synchronization Signal
NR
NR Radio Access
NRT
Neighbour Relation Table
NSSS
Narrowband Secondary Synchronization Signal
NTN
Non-Terrestrial Network
OFDM
Orthogonal Frequency Division Multiplexing
OFDMA
Orthogonal Frequency Division Multiple Access
OPI
Offload Preference Indicator
OTDOA
Observed Time Difference Of Arrival (positioning method)
P-GW
PDN Gateway
P-RNTI
Paging RNTI
PA
Power Amplifier
PAPR
Peak-to-Average Power Ratio
PBCH
Physical Broadcast CHannel
PBR
Prioritised Bit Rate
PCC
Primary Component Carrier
PCCH
Paging Control Channel
PCell
Primary Cell
PCFICH
Physical Control Format Indicator CHannel
PCH
Paging Channel
PCI
Physical Cell Identifier
PDCCH
Physical Downlink Control CHannel
PDCP
Packet Data Convergence Protocol
PDN
Packet Data Network
PDSCH
Physical Downlink Shared CHannel
PDU
Protocol Data Unit
PHICH
Physical Hybrid ARQ Indicator CHannel
PHY
Physical layer
PLMN
Public Land Mobile Network
PMCH
Physical Multicast CHannel
PMK
Pairwise Master Key
PPPP
ProSe Per-Packet Priority
PPPR
ProSe Per-Packet Reliability
PRACH
Physical Random Access CHannel
PRB
Physical Resource Block
ProSe
Proximity based Services
PSBCH
Physical Sidelink Broadcast CHannel
PSC
Packet Scheduling
PSCCH
Physical Sidelink Control CHannel
PSCell
Primary SCell
PSDCH
Physical Sidelink Discovery CHannel
PSK
Pre-Shared Key
PSM
Power Saving Mode
PSSCH
Physical Sidelink Shared CHannel
pTAG
Primary Timing Advance Group
PTW
Paging Time Window
PUCCH
Physical Uplink Control CHannel
PUR
Preconfigured Uplink Resource
PUR-RNTI
Preconfigured Uplink Resource RNTI
PUSCH
Physical Uplink Shared CHannel
PWS
Public Warning System
QAM
Quadrature Amplitude Modulation
QCI
QoS Class Identifier
QoE
Quality of Experience
QoS
Quality of Service
R-PDCCH
Relay Physical Downlink Control CHannel
RA-RNTI
Random Access RNTI
RAC
Radio Admission Control
RACH
Random Access Channel
RANAC
RAN-based Notification Area code
RAT
Radio Access Technology
RB
Radio Bearer
RBC
Radio Bearer Control
RCLWI
RAN Controlled LTE-WLAN Interworking
RF
Radio Frequency
RIBS
Radio-interface based synchronization
RIM
RAN Information Management
RLC
Radio Link Control
RLM
Radio Link Monitoring
RMTC
RSSI Measurement Timing Configuration
RN
Relay Node
RNA
RAN-based Notification Area
RNAU
RAN-based Notification Area Update
RNC
Radio Network Controller
RNL
Radio Network Layer
RNTI
Radio Network Temporary Identifier
ROHC
Robust Header Compression
ROM
Receive Only Mode
RRC
Radio Resource Control
RRM
Radio Resource Management
RTT
Round Trip Time
RU
Resource Unit
S-GW
Serving Gateway
S-RSRP
Sidelink Reference Signal Received Power
S1-MME
S1 for the control plane
SAE
System Architecture Evolution
SAP
Service Access Point
SBCCH
Sidelink Broadcast Control Channel
SC-FDMA
Single Carrier - Frequency Division Multiple Access
SC-MCCH
Single Cell Multicast Control Channel
SC-MTCH
Single Cell Multicast Transport Channel
SC-N-RNTI
Single Cell Notification RNTI
SC-PTM
Single Cell Point To Multiploint
SC-RNTI
Single Cell RNTI
SCC
Secondary Component Carrier
SCell
Secondary Cell
SCG
Secondary Cell Group
SCH
Synchronization Channel
SCTP
Stream Control Transmission Protocol
SD-RSRP
Sidelink Discovery Reference Signal Received Power
SDAP
Service Data Adaptation Protocol
SDF
Service Data Flow
SDMA
Spatial Division Multiple Access
SDU
Service Data Unit
SeGW
Security Gateway
SeNB
Secondary eNB
SFN
System Frame Number
SI
System Information
SI-RNTI
System Information RNTI
S1-U
S1 for the user plane
SIB
System Information Block
SIPTO
Selected IP Traffic Offload
SIPTO@LN
Selected IP Traffic Offload at the Local Network
SL-BCH
Sidelink Broadcast Channel
SL-DCH
Sidelink Discovery Channel
SL-RNTI
Sidelink RNTI
SL-SCH
Sidelink Shared Channel
SPDCCH
Short PDCCH
SPID
Subscriber Profile ID for RAT/Frequency Priority
SPT
Short Processing Time
SPUCCH
Short PUCCH
SR
Scheduling Request
SRB
Signalling Radio Bearer
sTAG
Secondary Timing Advance Group
STCH
Sidelink Traffic Channel
SU
Scheduling Unit
TA
Tracking Area
TAC
Tracking Area Code
TAG
Timing Advance Group
TB
Transport Block
TCP
Transmission Control Protocol
TDD
Time Division Duplex
TDM
Time Division Multiplexing
TEID
Tunnel Endpoint Identifier
TFT
Traffic Flow Template
TM
Transparent Mode
TMGI
Temporary Mobile Group Identity
TNL
Transport Network Layer
TTI
Transmission Time Interval
U-plane
User plane
UAC
Unified Access Control
UDC
Uplink Data Compression
UE
User Equipment
UL
Uplink
UM
Unacknowledged Mode
UMTS
Universal Mobile Telecommunication System
UpPTS
Uplink Pilot Time Slot
UTRA
Universal Terrestrial Radio Access
UTRAN
Universal Terrestrial Radio Access Network
V2I
Vehicle-to-Infrastructure
V2N
Vehicle-to-Network
V2P
Vehicle-to-Pedestrian
V2V
Vehicle-to-Vehicle
V2X
Vehicle-to-Everything
VRB
Virtual Resource Block
WLAN
Wireless Local Area Network
WT
WLAN Termination
WUS
Wake Up Signal
X2-C
X2-Control plane
X2 GW
X2 GateWay
X2-U
X2-User plane
Xw-C
Xw-Control plane
Xw-U
Xw-User plane
