ISO/TR 17427-2:2015 高度道路交通システム—協調型ITS —パート2：フレームワークの概要 | ページ 5

2.1

application

app

software application

2.2

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 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.

2.3

application service

service provided by a service provider accessing data from the IVS (2.11) in a vehicle in the case of C-ITS, via a wireless communications network, or provided on-board the vehicle as the result of software (and potentially also hardware and firmware) installed by a service provider or to a service provider’s instruction

2.4

bounded secure managed domain

BSMD

secure peer-to-peer communications between entities ( ITS-stations (2.17) ) that are themselves capable of being secured and remotely managed; the bounded nature is derived from the requirement for ITS-stations to be able to communicate amongst themselves, i.e. peer-to-peer, as well as with devices that are not secured (referred to as ‘other ITS-stations’), and realizing that to achieve this in a secure manner often requires distribution and storage of security-related material that must be protected within the boundaries of the ITS-stations, leads to the secured nature of the entity, as there is great flexibility to achieve desired communication goals, there is a requirement that this flexibility be managed

Note 1 to entry: Within C-ITS and ISO 21217, such ITS-stations are defined as operating within bounded secured managed domains (BSMD), or outside of the BSMD.

2.5

Cooperative ITS

C-ITS

use of ITS technologies where service provision is enabled, or enhanced by, the use of ‘live’, present situation related, data/information from other entities (for example, from one vehicle to other vehicle(s)), and/or between different elements of the transport network, including vehicles and infrastructure (for example, from the vehicle to an infrastructure managed central system (2.6) or from a central infrastructure managed system to vehicle(s))

2.6

central system

service centre system that provides/supports application service(s) (2.3) managed through a central facility

2.7

Controller Area Networking bus

CAN bus

Note 1 to entry: CAN is unusual in that the entities on the network, called nodes, are not given specific addresses. Instead, it is the messages themselves that have an identifier which also determines the messages' priority. For this reason, there is no theoretical limit to the number of nodes, although in practice it is ~64.

2.8

‘Core’ system

combination of enabling technologies and services that will provide the foundation for the support of a distributed, diverse set of applications (2.1) /application transactions, which work in conjunction with ‘External Support Systems’ such as ‘Certificate Authorities’; the system boundary for the core system is not defined in terms of devices or agencies or vendors, but by the open, standardized interface specifications that govern the behaviour of all interactions between core system users

2.9

global navigation satellite system

GNSS

comprises several networks of satellites that transmit radio signals containing time and distance data that can be picked up by a receiver, allowing the user to identify the location of its receiver anywhere around the globe

2.10

host management centre

HMC

service gateway that supervises the secure provision of software and services for C-ITS service provision

2.11

in-vehicle system

hardware, firmware and software on board a vehicle that provides a platform to support C-ITS service provision, including that of the ITS-station (2.17) (ISO 21217), the facilities layer, data pantry and on-board ‘apps’ (2.1)

2.12

intelligent transport systems

ITS

transport systems in which advanced information, communication, sensor and control technologies, including the Internet, are applied to increase safety, sustainability, efficiency, and comfort

2.13

ITS application

functionality that either completely provides what is required by an ITS service (2.16) or works in conjunction with other ITS applications (2.1) to provide one or more ITS services

2.14

ITS border router

ITS-s router with additional functionality that provides connectivity to other ITS communication nodes over external networks

2.15

ITS mobile router

ITS-s border router (2.14) with additional functionality that allows a change of point of attachment to an external network while maintaining session continuity

2.16

ITS service

functionality provided to surface transport users

2.17

ITS-station

entity in a communication network (comprised of application (2.1) , facilities, networking and access layer components) that is capable of executing ITS-s application processes (sometimes within a bounded, secured, managed domain), comprised of an ITS-s facilities layer, ITS-s networking and transport layer, ITS-s access layer, ITS-s management entity and ITS-s security entity, which adheres to a minimum set of security principles and procedures so as to establish a level of trust between itself and other similar ITS stations with which it communicates

2.18

wireline

traditional permanent ‘wired’ connection (although may in reality include microwave and other wireless connections)