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.

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

geo-anycast provides data dissemination from a source node to all nodes within a specified target area

NOTE The first station in the target area receiving the data shall forward the received data in a next hop. All other stations in the target area must not further forward the received data.

geo-routing network layer protocol using addresses in the form of geo-coordinates which identify target areas of possible destination stations

set of data required in order to effect a transmission

NOTE It is (the information) processed at the communication layer, such as a unique communication ID, and includes information on the transmitting/original entity. Personal data may be included depending on the communication medium used.

composition of multiple access technologies and communication protocols combined to provide complementary or redundant communication channels

allows a distinction to be made between several physically available media

globally unique, registered reference number identifying a non-parameterized communications protocol stack

directed sequence of nodes connected by links, starting at a source node and ending at one or more destination nodes

FSAP message type for service context messages (CTX)

communications with nearby stations without involving support of an infrastructure network

parameter of a CALM M5 CI / VCI specified in ISO 21215:2010

wireless broadband system including communication between user terminals and wireless access points in which the user terminals may move within the communication zones of the wireless access points during communication sessions, but session handover between wireless access points is not supported

period of time during which the physical medium is allocated either to the fixed equipment or to the mobile equipment

portion of sub-channels in the resource pool whose S-RSSI measured by the ITS station exceed a (pre-)configured threshold sensed over last 100 ms

an entity providing a service to a client entity where the service provider entity acts as a communications master, initiating and controlling the service session

A command issued by the CALM CI layer and sent to the CALM management via the M-SAP

command issued by the ITS-S networking and transport layer and sent to the ITS-S management entity via the MN-SAP

a command issued by the CALM networking layer and sent to the CALM management via the N-SAP

request or response message PDU out of the set REQW, REQN, RES

command issued by the ITS-S facilities layer and sent to the ITS-S security entity via the SF-SAP

command issued by the ITS-S networking and transport layer and sent to the ITS-S security entity via the SN-SAP

unique set of parameter values controlling the behaviour of the DSRC

part of a communication path between a source node and an anchor node being uniquely identified by a LinkID (identifying a CI in the source node and the next hop node) and by the anchor node

a command issued by the CALM management and sent to the CALM CI layer via the M-SAP

A command issued by the CALM management in order to set the value of one or several CI parameters. It is sent via the M-SAP to the CALM CI-layer.

command issued by the ITS-S management entity and sent to the ITS-S security entity via the MS-SAP

command issued by the ITS-S security entity and sent to the ITS-S facilities layer via the SF-SAP

command issued by the ITS-S security entity and sent to the ITS-S networking and transport layer via the SN-SAP

set of messages designed for an ITS-related purpose

name of an ITS message set used to carry information on digital maps covering the area of intersections

file containing information that is accessible to (and used by) more than one resident application

communications using support of an infrastructure network

a service offered by a FAST service provider via a wireless communication interface to a FAST service user, which may provide as a minimum, but not limited to this, a single information message, where the service is implemented in a provider application and in a client application

logical entity in a CI that is managing priority queues

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)

wireless broadband system including communication between user terminals and wireless access points in which the locations of the user terminals and the wireless access points are stationary (i.e. consistent with “fixed wireless access” as defined in Recommendation ITU-R F.1399)

wireless communications network which supports 'public services' such as cellular telephony, mobile wireless broadband and satellite systems

logical entity in a CI that is associated with a peer station

short-range localized communications WiFi access technology specifically designed for vehicular localized communications

NOTE 1 to entry An example of vehicular WiFi is IEEE 802.11 operating outside the context of a Basic Service (OCB), also known as IEEE 802.11p[51], used in the 5,9 GHz frequency range reserved for ITS services with profile standards named ITS-G5 (ETSI) in Europe and Australia, and US-DSRC in North America and their harmonization at ISO ( ITS-M5).

one of several data elements that are included in all PDRMs

SAE J2735™ message from a C-ITS device to the infrastructure by which the vehicle asks for priority treatment by an intersection’s traffic signal controller