ISO 21219-9:2023 高度道路交通システム — トランスポート プロトコル専門家グループ、第 2 世代 (TPEG2) による交通および旅行情報 (TTI) — Part 9: サービスおよびネットワーク情報 (TPEG2-SNI) | ページ 6

3.1

application identification

AID

identifier that specifies how to process TPEG content and route information to the appropriate application decoder

Note 1 to entry: Each TPEG application has a unique number, which identifies the application according to Clause 5. The application identification is part of the TPEG specification and is defined as and when new applications are developed.

3.2

application instance

actual data stream containing content as defined by an application

3.3

application and content identification

ACID

worldwide unique identifier that defines the content of a service

Note 1 to entry: The ACID is composed of the originator service identification (SID-A, SID-B, SID-C) (3.13), the content identification (3.5) and the application identification (3.1) .

3.4

content description

textual description of a selected service component (3.11)

3.5

content identification

COID

identifier that is unique within a given application and used to specify its content

Note 1 to entry: The COID is defined by the originator of the content and is unique within a specific application. It is used for labelling the content of a component.

3.6

data radio channel

DARC

FM sub-carrier system for data transmission

3.7

content originator

original provider of an application instance (3.2)

Note 1 to entry: The content originator may distribute the application data to different service providers. In some cases, the service provider generates its own application data and is therefore also the content originator.

3.8

fast tuning GST

FT-GST

directory of the applications and content of the service that indicates in which components the relevant information can be found

Note 1 to entry: This contains the minimum set of information required for the acquisition of application data.

3.9

guide to the service table

GST

basic service information such as service structure, service timing and content description (3.4) , etc.

3.10

Reference-English “word”

word which enables information to be transmitted as a concept, thereby letting the receiver device choose the best possible representation of the given concept in the context of the other parts of the message

Note 1 to entry: This approach means that devices can present concepts in any language or even as graphical icons, for example. For further explanation, see ISO 21219-2.

3.11

service component

virtual channel for messages of a particular application

3.12

service component identification

SCID

unique identifier that defines a service component (3.11) within a service

Note 1 to entry: The SCID is chosen by the carrier service provider and identifies a component, which itself has an ACID comprising originator SID, COID and AID. The same number may be used in a different service or, in the same service at a later time to identify a completely different combination of originator SID, COID and AID.

3.13

service identification

worldwide unique identifier for a service

Note 1 to entry: It consists of three elements called SID A, SID-B, SID-C. These are allocated as described in ISO/TS 18234-2.

3.14

service table

table containing basic service information, such as service structure, service timing and content description (3.4) , etc.

3.15

time schedule GST

T-GST

table indicating the operation times of selected service components (3.11)