Results for area 12.3 Telecommunications
conductor-free medium between an OBE and the reader/interrogator through which the linking of the OBE to the reader/interrogator is achieved by means of electro-magnetic signals
complete sequence of interaction by the reader/interrogator where the OBE is unambiguously identified and new data, comprising either whole or part of the full data set, is written onto the OBE by means of the air interface
a data mode corresponding to an OBE in which data content can be changed by means of a compatible interrogator via the air interface
one way communication between the fixed equipment and OBE(s)
two way communications between fixed equipment and OBE(s)
“read only” functionality with a start signal from the FE side
procedure for registration as defined in ISO/TS 24534-3
a set of parameters constituting a certain international standardized profile of the DSRC protocol stack (L1, L2 and L7)
common term describing an automatic identification system comprising one or more reader/interrogator(s) and one or more OBE(s) in which communication and data transfer is achieved by wireless means of electromagnetic signals
NOTE It varies from low frequency (inductive) to microwave frequencies.
an instance of a ’Vehicle Identification’ using a harmonised air interface protocol known as ‘CEN DSRC profile’, using a distinct set of ‘AVI/AEI attributes’, retrieved by ‘service primitives (communication)’ and ‘security mechanisms’
fixed equipment function to control the communication between fixed equipment and OBE
transaction as defined in ISO 24534-4
condition where the close proximity of a vehicle/equipment interposed between FE and OBE obscures the signals, thus preventing a successful AVI/AEI transaction
NOTE The shadowing caused by normal traffic behaviour is taken into account and overcome to provide a successful transaction. Abnormal shadowing may be caused by large or unusually shaped vehicles/equipment or by vehicles travelling too closely together.
completed cycle of communication (across the air interface at reference point delta) wherein a message identifying a vehicle or item of equipment is successfully received and understood by the receiver during one passage through the read zone
NOTE The number of attempts, retries and repeats is not relevant, it is only that one fully completed identification process communication cycle is successfully completed to the extent that no communications error could be detected.
means of effecting local (short range) transactions between fixed equipment and OBE(s) using an “air interface” comprising inductive or propagated signals between the fixed equipment and OBE(s); technology for the transmission of information between multiple vehicles50) (V2V) and between vehicles and the transportation infrastructure (V2I and I2V) using wireless technologies
NOTE 1 to entry It is characterized as having a limited distance (approximately 300 m) but is assumed to be low latency to establish a connection and exchange information.
data flow between two function blocks, where protocols define the information flow across the reference point