IS Interface Specification
ISC International Switching Centre
ISCP Interference Signal Code Power
ISDN Integrated Services Digital Network
ISIM IM Services Identity Module
ISM Industrial, Scientific and Medical
ISO International Organisation for Standardisation
ISP Internet Service Provider
ISUP ISDN User Part
ITC Information Transfer Capability
ITS Intelligent Transportation Systems
ITU International Telecommunication Union
ITU-R Radiocommunication Sector of the ITU
IUI International USIM Identifier
IUT Implementation Under Test
IWF InterWorking Function
I-WLAN Interworking WLAN
IWMSC InterWorking MSC
IWU Inter Working Unit
JAR file Java Archive File
JCRE Java Card™ Run Time Environment
JD Joint Detection
JNDI Java Naming Directory Interface
JP Joint Predistortion
JPEG Joint Photographic Experts Group
JTAPI Java Telephony Application Programming Interface
JVM Java™ Virtual Machine
K Constraint length of the convolutional code
Windows size
kB Kilobyte (1000 bytes)
Kbps kilo-bits per second
Kc Ciphering key
Ki Individual subscriber authentication key
KPAS Korean Public Alert System
KSI Key Set Identifier
Ksps kilo-symbols per second
L1 Layer 1 (physical layer)
L2 Layer 2 (data link layer)
L2ML Layer 2 Management Link
L2R BOP L2R Bit Orientated Protocol
L2R COP L2R Character Orientated Protocol
L2R Layer 2 Relay
L3 Layer 3 (network layer)
LA Location Area
LAA Licensed-Assisted Access
LAC Link Access Control
Location Area Code
LAI Location Area Identity
LAN Local Area Network
LAPB Link Access Protocol Balanced
LAPDm Link Access Protocol on the Dm channel
LATA Local Access and Transport Area
LAU Location Area Update
LB Load Balancing
LBT Listen Before Talk
LCD Low Constrained Delay
LCG Logical Channel Group
LCN Local Communication Network
LCP Link Control Protocol
LCR Low Chip Rate
LCS Location Services
LCSC LCS Client
LCSS LCS Server
LE Local Exchange
LEN LENgth
L-GW Local Gateway
LHN ID Local Home Network ID
LHN Local Home Network
LI Language Indication
Length Indicator
Line Identity
LIPA Local IP Access
LLC Logical Link Control
Low Layer Compatibility
Lm Traffic channel with capacity lower than a Bm
LMA Local Mobility Anchor, точка привязки (якорь) локального местоположения мобильного абонента.
LMSI Local Mobile Station Identity
LMU Location Measurement Unit
LN Logical Name
LNA Low Noise Amplifier
LND Last Number Dialled
LNS L2TP Network Server
LP Location Probability
LPLMN Local PLMN
LPP LTE Positioning Protocol
LPPa LTE Positioning Protocol Annex
LR Location Register
LSA Localised Service Area
LSB Least Significant Bit
LSTR Listener SideTone Rating
LTE Long Term Evolution
Local Terminal Emulator
LTZ Local Time Zone
LU Local Units
Location Update
LV Length and Value
LWA LTE-WLAN Aggregation
LWAAP LTE-WLAN Aggregation Adaptation Protocol
LWIP LTE WLAN Radio Level Integration with IPsec Tunnel
LWIP-SeGW LWIP Security Gateway
M Mandatory
MA Mobile Allocation
MAC Medium Access Control, ( под )уровень управления доступом к среде.
MAC Message authentication code (encryption context), Код аутентификации сообщения (контекст шифрования)
MAC-A MAC used for authentication and key agreement (TSG T WG3 context)
MAC-I MAC used for data integrity of signalling messages (TSG T WG3 context)
MACN Mobile Allocation Channel Number
MAF Mobile Additional Function
MAH Mobile Access Hunting supplementary service
MAHO Mobile Assisted Handover
MAI Mobile Allocation Index
MAIO Mobile Allocation Index Offset
MAP Mobile Application Part
MBMS Multimedia Broadcast Multicast Service, услуга мультимедийного вещания.
MBMS Gateway шлюз мультимедийного вещания.
MBMS Multimedia Broadcast and Multicast Service
MBR Maximum Bit Rate
MBSFN Multicast Broadcast Single Frequency Network, одночастотная групповая вещательная сеть.
MCC Mobile Country Code
MCCH Multicast Control Channel, логический групповой управляющий канал, при помощи которого обеспечивается передача услуг мультимедийного вещания.
MCE Multi-cell/multicast Coordination Entity
MCG Master Cell Group
Main Carrier Group
MCH Multicast Channel, транспортный вещательный канал.
MCH Multicast channel
MCI Malicious Call Identification supplementary service
MCML Multi-Class Multi-Link PPP
Mcps Mega-chips per second
MCPTT Mission Critical Push To Talk
MCS Modulation and Coding Scheme, модуляция и схема кодирования
MCU Media Control Unit
MD Mediation Device
MDL (mobile) Management (entity) – Data Link (layer)
MDS Multimedia Distribution Service
MDT Minimization of Drive Tests
ME Maintenance Entity
Mobile Equipment
MEF Maintenance Entity Function
MEHO Mobile evaluated handover
MeNB Master eNB
MER Message Error Ratio
MExE Mobile Execution Environment
MF Master File
MultiFrame
MGCF Media Gateway Control Function
MGCP Media Gateway Control Part
MGT Mobile Global Title
MGW Media GateWay
MHEG Multimedia and Hypermedia Information Coding Expert Group
MHS Message Handling System
MIB Master Information Block
Management Information Base
MIC Mobile Interface Controller
MIM Management Information Model
MIME Multipurpose Internet Mail Extensions, стандарт многоцелевого расширения электронной почты.
MIMO Multiple Input Multiple Output, методы разнесённой передачи и параллельной антенной обработки.
MIP Mobile IP
MIPS Million Instructions Per Second
MLC Mobile Location Centre
MM Mobility Management
Man Machine
MM1 интерфейс логический стык между MMS-сервером и пользовательским MMS-агентом.
MM2 интерфейс логический стык между базовым и транзитным MMS-серверами.
MM3 интерфейс логический стык между MMS-сервером и внешними интернет-серверами.
MME Mobility Management Entity, наземные пункты управления мобильностью
MME Mobility Management Entity
MMI Man Machine Interface
MMS Multimedia Messaging Service, услуга по передаче мультимедийных сообщений.
MMSE Multimedia Messaging Service Environment, окружение мультимедийной услуги. Совокупность сетевых элементов, отвечающих за доставку мультимедийных сообщений и находящихся под управлением единого узла.
MMTEL Multimedia telephony
MNC Mobile Network Code
MNP Mobile Number Portability
MO Mobile Originated
MOHO Mobile Originated Handover
MO-LR Mobile Originating Location Request
MOP Maximum Output Power
MOS Mean Opinion Score
MO-SMS Mobile Originated Short Message Service
MoU Memorandum of Understanding
MP Multi-link PPP
MPDCCH MTC Physical Downlink Control Channel
MPEG Moving Pictures Experts Group
MPH (mobile) Management (entity) – PHysical (layer) [primitive]
MPR Maximum Power Reduction
MPS Multimedia Priority Service
MPTY MultiParTY
MR Medium Range
MRB MBMS Point to Multipoint Radio Bearer
MRF Media Resource Function
M-RNTI MBMS RNTI
MRO Mobility Robustness Optimisation
MRP Mouth Reference Point
MS Mobile Station
MSA MCH Subframe Allocation
MSAS Multi-functional Satellite Augmentation System
MSB Most Significant Bit
MSC Mobile Switching Centre
MSCM Mobile Station Class Mark