MAC-48

48 bit MAC address

EUI-64

64-bit EUI

address location (AL)

application category that deals with the task of expressing a real world position in terms of the data representation
NOTE: Address location is one of the six application categories supported by the API.

application category that deals with the task of expressing a real world position in terms of the data representation
NOTE: Address location is one of the six application categories supported by the API.

adjacent channel

refers to the use of a neighbouring DSRC channel by two or more emissions
NOTE: It is possible that a DSRC channel has either one or two adjacent channels.

refers to the use of a neighbouring DSRC channel by two or more emissions
NOTE: It is possible that a DSRC channel has either one or two adjacent channels.

AFI

Alternative Frequency Information (an RDS-TMC feature)

ATR

answer to reset

application data protocol

application interface

communication point where one part of a system communicates with another in order to service an application
NOTE 1 to entry: The communication point is typically but not necessarily wireless in the scenarios of ISO 26683.

communication point where one part of a system communicates with another in order to service an application
NOTE 1 to entry: The communication point is typically but not necessarily wireless in the scenarios of ISO 26683.

application layer (L7)

top layer of the OSI seven-layer model as defined in ISO/IEC 7498-4
NOTE: This layer defines the structure and format of the data packet content along with the rules and procedures for exchanging data packets.

top layer of the OSI seven-layer model as defined in ISO/IEC 7498-4
NOTE: This layer defines the structure and format of the data packet content along with the rules and procedures for exchanging data packets.

A_PDU

application layer protocol data unit

A_SDU

application layer service data unit

application program interface; application programming interface (API)

set of routines, protocols, and tools for building software applications
[SOURCE: ISO 17627:2009, 2.4, modified]
NOTE 1 to entry: An API expresses a software component in terms of its operations, inputs, outputs, and underlying types; it defines functionalities that are independent of their respective implementations, which
allows definitions and implementations to vary without…

set of routines, protocols, and tools for building software applications
[SOURCE: ISO 17627:2009, 2.4, modified]
NOTE 1 to entry: An API expresses a software component in terms of its operations, inputs, outputs, and underlying types; it defines functionalities that are independent of their respective implementations, which
allows definitions and implementations to vary without compromising the interface. An API can also assist otherwise distinct applications with sharing data, which can help to integrate and enhance the functionalities of
the applications.
NOTE 2 to entry: APIs often come in the form of a library that includes specifications for routines, data structures,
object classes, and variables. In addition to accessing databases or computer hardware, such as hard disk drives or video cards, an API can be used to ease the work of programming graphical user interface components.

APCI

application protocol control information

APDU

application protocol data unit

Base Station Controller (BSC) area

area of radio coverage consisting of one or more cells controlled by one BSC
NOTE 1 to entry: The boundaries of a BSC area and a location area are independent; a location area may span the boundary between BSC area and a BSC area may span the boundary between location areas.

area of radio coverage consisting of one or more cells controlled by one BSC
NOTE 1 to entry: The boundaries of a BSC area and a location area are independent; a location area may span the boundary between BSC area and a BSC area may span the boundary between location areas.

beacon data

information on the identity and location and movement of a CALM station together with a time stamp

information on the identity and location and movement of a CALM station together with a time stamp

beacon point (Activation MODEL)

a POINT where a beacon or similar device to support the automatic detection of vehicles passing by is located

a POINT where a beacon or similar device to support the automatic detection of vehicles passing by is located

bi-directional dialogue

two way communications between fixed equipment and OBE(s)

two way communications between fixed equipment and OBE(s)

bi-directional monologue

“read only” functionality with a start signal from the FE side

“read only” functionality with a start signal from the FE side

broadband

characteristic of systems that support information transmission rates greater than the primary rate (i.e. consistent with “broadband” as defined in Recommendation ITU-R F.1399)

characteristic of systems that support information transmission rates greater than the primary rate (i.e. consistent with “broadband” as defined in Recommendation ITU-R F.1399)

broadcast pool

data structure broadcast from the RSU to the OBUs

data structure broadcast from the RSU to the OBUs

broadcast service

B-Kernel

Broadcast-kernel

Broadcast/TPEG (B/TPEG)

the EBU project group name for the CEN ISO TS 18234 specification drafting group

the EBU project group name for the CEN ISO TS 18234 specification drafting group

CUP

CAN utility protocol

CANopen

application layer and the communication profile for CAN-based networks

application layer and the communication profile for CAN-based networks

carrier signal

electromagnetic signal that can be modulated to carry lower frequency encoded information across an air interface

electromagnetic signal that can be modulated to carry lower frequency encoded information across an air interface

cellular network (CN)

wireless communications network consisting of multiple adjacent access points (cells) with the capability of homogeneous transfer of a communications session instance to an adjacent cell without significant interruption to the session

wireless communications network consisting of multiple adjacent access points (cells) with the capability of homogeneous transfer of a communications session instance to an adjacent cell without significant interruption to the session

RX/TX-CI

CI capable of operating in receive and transmit mode

RX-CI

CI capable of operating in receive mode only