set of protocols and functions to adapt access technologies to the ITS-S networking and transport layer

ITS-S application process residing in the ITS-S management entity

ITS-S application process residing in the ITS-S facilities layer

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.

characteristic of a material entity that is not and has never been equipped with communications equipment for sending data to or receiving data from connected entities

ITS-S part of the ITS station reference architecture that is responsible for providing privacy, communication security and system security

ITS-S node used to interconnect two different OSI protocol stacks at layers 5 through to 7

NOTE 1 to entry An ITS-S gateway can convert between different protocols

functional and physical means which serve as the repository where all data to be retained are stored, enforcing all required security measures

adaptation entity based on InfraRed communication

Control interface management adaptation entity communicates through M-SAP with IME. Entity is responsible for management of CIME and mediaum adaptation layer. Entity is responsible for medium adaptation process.

uniquely addressable protocol or functionality that is part of an ITS-S managed service entity

NOTE 1 to entry Examples of ITS-S capabilities in the ITS station facilities layer are generic ITS-S facilities layer services specified in ISO/TS 17429 (Communication Profile Handler, Facilities Services Handler, Content Subscription Handler), the position and time service defined in ISO/TS 21176, the security services defined in ISO/TS 21177; examples of ITS-S capabilities in the ITS-S networking and transport layer are IPv6 functionalities defined in ISO 21210 (IPv6 neighbour discovery, IPv6 forwarding, IPv6 mobility support, etc.), the fast service announcement protocol defined in ISO 22418, etc.

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

ITS-S application process installation within the application entity

means for installing, uninstalling and modifying applications in OBE or WAE

EXAMPLE Software on a server that is responsible for downloading applications from a (possibly different) remote server over an IP network to OBE or WAE which is connected to the network.

instantiation of an ITS station

ITS-S internal management communications

bounded secured managed domain that is able to meet requirements of the ITS trust domainwithin which it wishes to participate

NOTE 1 to entry The ITS station reference architecture is defined in ISO 21217.

functional entity comprised of an ITS-S facilities layer, ITS-S networking & transport layer, ITS-S access layer, ITS-S management entity, ITS-S security entity and ITS-S applications entity providing ITS services

NOTE 1 to entry From an abstract point of view, the term “ITS station” refers to a set of functionalities. The term is often used to refer to an instantiation of these functionalities in a physical unit. Often the appropriate interpretation is obvious from the context. The proper name of physical instantiation of an ITS-S is ITS station unit (ITS-SU).

ITS-S entity that delivers one or more ITS-S communication services

instantiation of a specific access technology and ITS-S access layer protocol

wireless station that communicates with the equipment under test (EUT) by using the communications access for land mobiles (CALM) medium for the application management (AM) conformance test

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

characteristic of a material entity that is equipped with communications equipment that is not active or is otherwise unable to send data to or receive data from connected entities

ITS-Sthat delivers one or more ITS-S services

characteristic of a material entity that is or was equipped with communications equipment that is sufficiently physically disconnected such that the material entity is no longer able to send data to or receive data from connected entities

NOTE 1 to entry The vehicle on-board equipment can still be present in the vehicle and can even be partially connected, but not in any operational sense.

protocol data unit exchanged between peer ITS-S networking & transport layers

NOTE 1 to entry The deprecated term ITS-NPDU is in use in published standards with the same meaning as ITS-NTPDU.

wireless broadband system including communication between user terminals and wireless access points in which the location of the user terminals and the wireless access points may change, but are stationary during communication sessions (i.e. consistent with “nomadic wireless access” as defined in Recommendation ITUR F.1399)

ITS-S protocol layer in the ITS station reference architecture containing the OSI physical and data link layer protocols for ITS communications

NOTE 1 to entry Within the Internet Engineering Task Force (IETF), the term “link layer” is used to describe the same functionality as the ITS-S access layer.

NOTE 2 to entry Within the US, the NTCIP standards use the term “subnet layer” to describe the same functionality as the ITS-S access layer.

ITS-Sfunctionalities in an ITS-S node that enable connecting two networks and forwarding packets not explicitly addressed to the ITS-S node

interface between the access layer and the networking and transport layer

interface between the ITS-S management entity and the ITS-S facilities layer

interface between the ITS-S management entity and the ITS-S networking & transport layer

interface between the ITS-S networking & transport layer and the ITS-S facilities layer

interface between the ITS-S security entity and the ITS-S facilities layer

interface between the ITS-S security entity and the ITS-S networking & transport layer

ITS-S part of the ITS station reference architecture that is responsible for management of communications and configuration information for the local physical object and possibly remote physical objects

service data unit exchanged between ITS-S networking and transport layer and ITS-S facilities layer

the network layer routes the data grams to the appropriate functional unit or program addressed; it also isolates the upper layers from the different technologies that are making the connections

NOTE Network Protocols such as PPP (Point to Point Protocol), IPv6, IPX, ROHC (Robust Header Compression), and others that may be needed operate in this layer. The Network Layer implements the functionality of Global multicast, RSVP (Resource Reservation Protocol), diffserv (differentiated service), NEMO (Network Mobility), IPsec (IP Security), IP Firewall, Static Routing, Dynamic Routing Protocol NDP (Network Discovery Protocol), DHCP (Dynamic Host Configuration Protocol), and SLAAC (Stateless Address Auto-Configuration). The network Management Entity responds to commands from the CALM Management Entity to modify the routing table of the resident device so that data grams from the managed application will flow to the desired destination.

ITS-S capability of the ITS-S facilities layer providing a service that may be applied to ADUs at the request of the source ITS-S-AP

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

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

lowest layer of the CALM management stack which is horizontally connected to the MMAE

access technology dedicated to operation in an ITS-S

ITS-S protocol layer in the ITS station reference architecture containing the OSI network and transport layer protocols

NOTE 1 to entry The full name of this layer is the networking and transport layer, but the term transnet layer provides a more concise name.

ITS-S entity that has an ITS-S user need to be fulfilled

software running in a CALM host, or optionally in a CALM router, providing a service to the end user

all OSI communication protocol layers of a CALM medium that are below the CALM network layer

NOTE This also includes CAL.

equipment installed at fixed locations that exchanges information via one or more radio communication interfaces with OBE and possibly other WAE, and which may have connection to a wide-area network