Glossary

A digital modulation technique used for signals in which four bits are modulated at once by selecting one of 16 possible combinations of carrier phase shift and amplitude.

The name of a gateway between a mobile network and another computer network, usually the Internet.

The communication unit between a terminal and smart card (Universal Integrated Circuit Card (UICC)).

A command used to control the modem.

A set of commands and events that allows a smart card to establish a communication channel with a terminal and through the terminal with a remote server or a remote device.

A digital modulation technique used for signals in which one bit is modulated by selecting one of two possible carrier phase shifts with a 180-phase difference.

A single-frequency electromagnetic wave that can be modulated in amplitude, frequency, or phase to convey information.

The last one-digit number of the International Mobile (Station) Equipment Identity (IMEI) code used for error detection.

A method for allocating IP (Internet Protocol) addresses.

A non-cellular radio standard included as part of the 5G standards by the ITU.

A functional grouping of files consisting of a dedicated file and all files which contain the dedicated file in their parental hierarchy.

A method in mobile communication to conserve the battery of a mobile device by turning the RF modem in a sleep state.

Distinguished Encoding Rules

A network management protocol used for automatic and centralized management of IP addresses within a network.

A unique number embedded on a microchip for identifying mobile devices.

A file containing administrative information associated with the UICC which might include network-specific settings or information essential for the mobile device's interaction with the network.

A low-power wide area network radio technology standard developed by 3GPP to enable a wide range of cellular devices and services.

The Evolved Packet System (EPS) Mobility Management (EMM) sublayer in the Non-access Stratum (NAS) protocol provides mobility service to the UE.

LTE carrier channel number for unique identification of LTE band and carrier frequency.

A connection-oriented transmission network in LTE (Long-term Evolution) consisting of an EPC (Evolved Packet Core) and an E-UTRAN (Evolved Terrestrial Radio Access Network).

The network architecture defined for the E-UTRA radio interface consisting of evolved Node Bs (eNB) and providing user plane and control plane protocol terminations towards the User Equipment (UE).

The air interface of LTE.

A method to conserve the battery of an IoT (Internet of Things) device by allowing it to remain inactive for extended periods.

A firmware update performed remotely over the air (OTA).

A packet-based mobile data service for 2G and 3G mobile networks with data rates of 56-114 kbps/second and continuous connection to the Internet.

A satellite navigation system with global coverage. The system provides signals from space transmitting positioning and timing data to GNSS receivers, which use this data to determine location.

A satellite-based radio navigation system that provides its users with accurate location and time information over the globe.

A digital signal pin that can be used as input, output, or both. It is uncommitted and can be controlled by the user at runtime.

Any combined Automatic Repeat Request (ARQ) and Forward Error Coding (FEC) method that saves failed decoding attempts for future joint decoding.

A unique serial number of a SIM card.

An application which resides on a mobile device's Subscriber Identity Module (SIM) card (UICC).

A unique code consisting of 14 digits and a check digit for identifying 3GPP-based mobile devices.

A unique code consisting of 16 decimal digits and two software version digits for identifying 3GPP-based mobile devices.

A unique code, usually 15 digits, used for the identification of a mobile subscriber and consisting of an Mobile Country Code (MCC), Mobile Network Code (MNC), and MSIN (Mobile Subscription Identification Number).

Physical objects that are embedded with sensors, processing ability, software, and other technologies that connect and exchange data with other devices and systems of the Internet or other communications networks.

The network layer communications protocol in the Internet protocol suite for relaying datagrams across network boundaries. Its routing function enables internetworking, and essentially establishes the Internet.

A seven-bit coded character set for information exchange.

An Internet-proposed standard for creating data with optional signature and optional encryption whose payload holds JSON that asserts some number of claims.

In a radio receiving system, an electronic amplifier that amplifies a very low-power signal without significantly degrading its signal-to-noise ratio.

A wireless broadband communication standard for mobile devices and data terminals, based on the GSM/EDGE and UMTS/HSPA technologies. 

The largest packet or frame that can be sent in a single network layer transaction.

A dedicated control interface for the RF front-end subsystem. MIPI Alliance

A unique three-digit part of an IMSI code identifying the country of domicile of the mobile subscriber. MCC is used together with the Mobile Network Code (MNC).

The physical UE consisting of one of more Mobile Termination (MT) and one or more Terminal Equipment (TE).

A code identifying the telecommunications network. The code is defined by ITU-T Recommendation E.212, consists of two or three decimal digits, and is used together with the Mobile Country Code (MCC).

A number consisting of a maximum of 15 digits identifying a mobile subscriber by mapping the telephone number to the SIM card in a phone.

A component of the Mobile Equipment (ME) performing functions specific to management of the radio interface. The R interface between TE and MT uses the AT command set. The IMEI code is attached to the MT.

A narrowband technology standard with longer range, lower throughput, and better penetration in, for example, cellars and parking garages compared to LTE-M. NB-IoT is most suitable for static, low throughput applications like smart metering, smart agriculture, and smart city applications. Also known as E-UTRAN (NB-S1), Cat-NB1, and Cat-NB2.

In telecom protocol stacks, the highest stratum of the control plane between the core network and User Equipment (UE). The layer is used to manage the establishment of communication sessions and for maintaining communications with the UE as it moves.

A 3GPP communication system that delivers wireless connectivity using satellites, drones, or high-altitude platforms instead of ground-based infrastructure.

Used by the network for NAS-level mobility management congestion control.

Memory that can retrieve stored information even after having been power-cycled.

Refers to any type of wireless transmission. For Matter, OTA is synonymous with the Over-the-Air software update mechanism.

A type of non-volatile memory that permits data to be written to memory only once.

A network that provides data services.

A packet transfer protocol in wireless GPRS (General Packet Radio Services) and HSDPA (High-speed Downlink Packet Access) networks.

An optional security feature in mobile devices used for identifying a user. PIN is a numeric code which must be entered each time a mobile device is started.

A digit sequence required in 3GPP mobile phones to unlock a SIM that has disabled itself after an in correct personal identification number has been entered multiple times.

A device used to increase the transmit power level of a radio signal.

A feature introduced in 3GPP Release 12 to improve battery life of IoT (Internet of Things) devices by minimizing energy consumption. The device stays dormant during the PSM window.

A password authentication method, a string of text, expected before a username and password to establish a secured connection. Also known as a shared secret.

A board that connects electronic components.

A public key certificate defined in the X.509 cryptography standard and used to privately transmit email.

A modem firmware version used in the device manufacturing phase.

An element of NAS message used for transferring parameters between the UE and the P-GW (Packet Data Network Gateway).

Information transferred as a single unit between peer entities of a computer network and containing control and address information or data. PDU mode is one of the two ways of sending and receiving SMS messages.

A network that provides land mobile telecommunications services to the public. A PLMN is identified by the MCC and MNC.

A digital modulation technique used for signals in which two bits are modulated at once, selecting one of four possible carrier phase shifts.

The measured overall performance of a service, such as a telephony or computer network, a connection, or a cloud computing service.

A radio baseband chipset feature that protects the mobile network from signaling overload.

A protocol used in UMTS, LTE, and 5G on the radio interface. It is an OSI model network layer 3 protocol used between the User Equipment and Base Station.

The average power level received from a single reference signal in an LTE (Long-Term Evolution) network.

The quality of a single reference signal received in an LTE (Long-Term Evolution) network and calculated from Reference Signal Received Power (RSRP).

A 3GPP feature that allows an LTE-M or NB-IoT device to indicate to the eNB that it has no more UL data and that the device does not anticipate receiving further DL data.

The smallest unit of resources that can be allocated to a user.

A unique six-digit number part of the IMEI code identifying each equipment within each Type Allocation Code (TAC).

The level of signal power compared to the level of noise power, often expressed in decibels (dB).

Part of the IMEI code identifying the revision of the software installed on a mobile device.

A card used in User Equipment (UE) containing data for subscriber identification.

Several integrated circuits, often from different technologies, enclosed in a single module that performs as a system or subsystem.

A microchip that integrates all the necessary electronic circuits and components of a computer or other electronic systems on a single integrated circuit.

A device that connects a UE to a communications network. In mobile networks, the terminal adapter is used by the terminal equipment to access the mobile termination using AT commands.

Communications equipment at either end of a communications link, used to permit the stations involved to accomplish the mission for which the link was established.

A unique code used to identify a tracking area within a particular network.

A procedure initiated by the User Equipment (UE) when moving to a new tracking area in the LTE (Long-term Evolution) system.

A cryptographic protocol that provides end-to-end security of data sent over a computer network.

The initial eight-digit part of an International Mobile (Station) Equipment Identity (IMEI) code used for identifying the model of a mobile phone.

A hardware device for asynchronous serial communication between devices.

Any device used by an end-user to communicate. The UE consists of the Mobile Equipment (ME) and the Universal Integrated Circuit Card (UICC).

A new generation Subscriber Identity Module (SIM) used in User Equipment (UE) for ensuring the integrity and security of personal data.

A unique address for identifying each slave device in an RFFE (RF Front-End) system.

A card used in UE containing data for subscriber identification.

A standard that provides mechanisms which allow applications in the Universal Subscriber Identity Module (USIM) to interact and operate with Mobile Equipment (ME).