MAC-48

48 bit MAC address

EUI-64

64-bit EUI

A-COMMAND

a command issued by the CALM management and sent to the CALM service layer via the A-SAP

a command issued by the CALM management and sent to the CALM service layer via the A-SAP

A-REQUEST

a command issued by the CALM service layer and sent to the CALM management via the A-SAP

a command issued by the CALM service layer and sent to the CALM management via the A-SAP

access layer

protocol layer that contains the OSI physical and data link layer protocols

protocol layer that contains the OSI physical and data link layer protocols

access technology

technology employed in a communication interface to access a specific medium

technology employed in a communication interface to access a specific medium

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.

antenna bore sight direction

direction of maximum antenna gain

direction of maximum antenna gain

application data unit (ADU)

data unit exchanged between ITS-S application processes

data unit exchanged between ITS-S application processes

application entity; ITS-S application entity

DEPRECATED: information layer
ITS-S part of the ITS station reference architecture that is responsible for providing ITS-related functionality
NOTE 1 to entry: Within the US, the National Transportation Communications for ITS Protocol (NTCIP) standards identify an “information layer” on top of the traditional OSI stack. However, the purpose of this layer includes both information…

DEPRECATED: information layer
ITS-S part of the ITS station reference architecture that is responsible for providing ITS-related functionality
NOTE 1 to entry: Within the US, the National Transportation Communications for ITS Protocol (NTCIP) standards identify an “information layer” on top of the traditional OSI stack. However, the purpose of this layer includes both information configuration and functionality. The ITS-S reference architecture separates these two roles between the management entity and the application entity.

application management entity (AME)

software residing in OBE and/or WAE that manages installation, uninstallation and modification of resident applications

software residing in OBE and/or WAE that manages installation, uninstallation and modification of resident applications

application management table (AMT)

table in an AME that stores management related information for resident applications

table in an AME that stores management related information for resident applications

attribute identifier

unambiguously distinguishes an attribute from all other attributes within the same element

unambiguously distinguishes an attribute from all other attributes within the same element

auxiliary channel

is a logical property of a physical wireless communication channel to run application sessions for applications with low user priority

is a logical property of a physical wireless communication channel to run application sessions for applications with low user priority

base station

fixed DSRC equipment on the roadside, which performs communications with multiple mobile stations

fixed DSRC equipment on the roadside, which performs communications with multiple mobile stations

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

bit error rate (BER)

averaged number of erroneous bits relative to the total number of transmitted bits

averaged number of erroneous bits relative to the total number of transmitted bits

bit rate

number of bits per second, independent of the data coding

number of bits per second, independent of the data coding

bounded secured managed domain (BSMD)

abstract entity representing a managed processing and memory environment that provides protection from code and data that has not been determined to meet established security requirements

abstract entity representing a managed processing and memory environment that provides protection from code and data that has not been determined to meet established security requirements

BSME

Bounded Secured Managed Entity

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

CALM application session

association of two or more parties for the provision of CALM application service and, until its termination, which may involve more than one communication session in order to exchange information (e.g. are involved in a transaction)
NOTE: A CALM application session is not possible unless a communication session is first established
NOTE: An application session will normally involve multiple…

association of two or more parties for the provision of CALM application service and, until its termination, which may involve more than one communication session in order to exchange information (e.g. are involved in a transaction)
NOTE: A CALM application session is not possible unless a communication session is first established
NOTE: An application session will normally involve multiple bidirectional transfers of data, but may be a unidirectional transfer of data.

CALM beaconing

periodic broadcasting of “Beacon Data”.

periodic broadcasting of “Beacon Data”.

CALM communication kernel (CCK)

basic CALM implementation – interface with minimum set of CALM functionality

basic CALM implementation – interface with minimum set of CALM functionality

CALM management entity (CME)

CALM submodul responsible for managing of functions responsible for managing of access to communication medium

CALM submodul responsible for managing of functions responsible for managing of access to communication medium

CALM-aware application

ITS-S application which is capable of supporting features specific to CALM
NOTE: CI selection management is an example.

ITS-S application which is capable of supporting features specific to CALM
NOTE: CI selection management is an example.

carrier frequencies

number and values of the downlink carrier frequencies, which are equal to the frequencies of the continuous wave CW, transmitted by the RSU and used by transponder OBUs for uplink communication; each carrier frequency is the centre frequency of a downlink channel

number and values of the downlink carrier frequencies, which are equal to the frequencies of the continuous wave CW, transmitted by the RSU and used by transponder OBUs for uplink communication; each carrier frequency is the centre frequency of a downlink channel

cell

communication zone/service area of a wireless access point (AP) or base station

communication zone/service area of a wireless access point (AP) or base station

central ITS station; central ITS-S (C-ITS-S)

implementation of an ITS station in a central ITS subsystem

implementation of an ITS station in a central ITS subsystem