ISO/DIS 15662

Intelligent transport systems -- Wide area communication -- Protocol management information

Systèmes de transport intelligents -- Communication étendue -- Protocole de gestion de l'Information

Standards Content (sample)

DRAFT INTERNATIONAL STANDARD ISO/DIS 15662
ISO/TC 204 Secretariat: ANSI
Voting begins on: Voting terminates on:
2003-03-20 2003-08-20

INTERNATIONAL ORGANIZATION FOR STANDARDIZATION • МЕЖДУНАРОДНАЯ ОРГАНИЗАЦИЯ ПО СТАНДАРТИЗАЦИИ • ORGANISATION INTERNATIONALE DE NORMALISATION

Intelligent transport systems — Wide area communication —
Protocol management information

Systèmes de transport intelligents — Communication étendue — Protocole de gestion de l'Information

ICS 03.220.01; 35.240.60

In accordance with the provisions of Council Resolution 15/1993 this document is circulated in

the English language only.

Conformément aux dispositions de la Résolution du Conseil 15/1993, ce document est distribué

en version anglaise seulement.

To expedite distribution, this document is circulated as received from the committee secretariat.

ISO Central Secretariat work of editing and text composition will be undertaken at publication

stage.

Pour accélérer la distribution, le présent document est distribué tel qu'il est parvenu du

secrétariat du comité. Le travail de rédaction et de composition de texte sera effectué au

Secrétariat central de l'ISO au stade de publication.

THIS DOCUMENT IS A DRAFT CIRCULATED FOR COMMENT AND APPROVAL. IT IS THEREFORE SUBJECT TO CHANGE AND MAY NOT BE

REFERRED TO AS AN INTERNATIONAL STANDARD UNTIL PUBLISHED AS SUCH.

IN ADDITION TO THEIR EVALUATION AS BEING ACCEPTABLE FOR INDUSTRIAL, TECHNOLOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT

INTERNATIONAL STANDARDS MAY ON OCCASION HAVE TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL TO BECOME STANDARDS TO

WHICH REFERENCE MAY BE MADE IN NATIONAL REGULATIONS.
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ISO/DIS 15662
Copyright notice

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under the applicable laws of the user's country, neither this ISO draft nor any extract from it may be reproduced,

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ISO/DIS 15662
Contents Page

Foreword......................................................................................................................................................................ii

Introduction .................................................................................................................................................................ii

1 Scope..............................................................................................................................................................2

2 Normative references....................................................................................................................................2

3 Terms and definitions....................................................................................................................................2

3.1 message..........................................................................................................................................................2

3.2 Protocol Management Information...............................................................................................................2

4 Protocol Management Information Items ....................................................................................................2

4.1 Selection of Communication System...........................................................................................................2

4.1.1 Responsiveness.............................................................................................................................................2

4.1.2 Directionality..................................................................................................................................................2

4.1.3 Usage environment........................................................................................................................................2

4.1.4 Service (provision) area................................................................................................................................2

4.1.5 Service (provision) time................................................................................................................................2

4.1.6 Bandwidth.......................................................................................................................................................2

4.1.7 Connection cost.............................................................................................................................................2

4.2 Application identifiers...................................................................................................................................2

4.2.1 Message identifier..........................................................................................................................................2

4.2.2 Message number............................................................................................................................................2

4.2.3 Time of message transmission ....................................................................................................................2

4.3 Address...........................................................................................................................................................2

4.3.1 Address of origin ...........................................................................................................................................2

4.3.2 Address of destination ..................................................................................................................................2

4.4 Priority.............................................................................................................................................................2

4.4.1 Interrupt handling..........................................................................................................................................2

4.4.2 Queue control.................................................................................................................................................2

4.5 Security...........................................................................................................................................................2

4.5.1 Mutual authentication....................................................................................................................................2

4.5.2 Data authentication........................................................................................................................................2

4.5.3 Concealment...................................................................................................................................................2

4.6 Application execution....................................................................................................................................2

4.6.1 Valid time........................................................................................................................................................2

4.6.2 Time stamp.....................................................................................................................................................2

4.6.3 Target area......................................................................................................................................................2

Annex A (normative) Protocol Management Information structure .....................................................................2

Annex B (normative) Protocol Management Information data type definition..................................................2

Annex C (informative) Protocol Management Information Usage .......................................................................2

C.1 Protocol Management Information Usage...................................................................................................2

C.1.1 Examples of Message Attributes..................................................................................................................2

C.1.2 Example of Organizing Communication System Characteristics (Presumed)........................................2

C.1.3 Usage and Caution Examples.......................................................................................................................2

C.2 Service cases.................................................................................................................................................2

C.2.1 Basic case.......................................................................................................................................................2

C.2.2 Mobile Internet case.......................................................................................................................................2

C.2.3 Multicast case.................................................................................................................................................2

C.2.4 Combined communication systems case ...................................................................................................2

C.3 Usage Range of Service Providers in Protocol Management Information ..............................................2

C.4 Protocol Management Information Usage for each case...........................................................................2

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ISO/DIS 15662

C.4.1 Basic case...................................................................................................................................................... 2

C.4.2 Mobile Internet case...................................................................................................................................... 2

C.4.3 Multicast case................................................................................................................................................ 2

C.4.4 Combined communication systems case .................................................................................................. 2

Annex D (informative) Extracting Protocol Management Information Items...................................................... 2

D.1 Approach to extracting Protocol Management Information candidate items......................................... 2

D.2 Process of extracting Protocol Management Information as header candidate items.......................... 2

Bibliography ............................................................................................................................................................... 2

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ISO/DIS 15662
Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO

member bodies). The work of preparing International Standards is normally carried out through ISO technical

committees. Each member body interested in a subject for which a technical committee has been established has

the right to be represented on that committee. International organizations, governmental and non-governmental, in

liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical

Commission (IEC) on all matters of electrotechnical standardization.

International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.

The main task of technical committees is to prepare International Standards. Draft International Standards adopted

by the technical committees are circulated to the member bodies for voting. Publication as an International

Standard requires approval by at least 75 % of the member bodies casting a vote.

ISO 15662 was prepared by Technical Committee ISO/TC 204, Intelligent Transport systems .

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ISO/DIS 15662
Introduction

Most of the application services in the ITS sector use a variety of wide area communication systems in order to

connect user terminals and Service Centers. In addition, the application services that are currently being provided

connect specific user terminals to specific Service Centers using specific wide area communications systems. In

other words, the various conditions that must be established to provide services are fixed. However, when the

future modes of service use are considered, it is assumed that a user will utilize the same terminal to access

Service Center A in some cases and Service Center B in other cases. It can also be assumed that in some cases

the user may be on foot and in others he or she may be traveling in a vehicle. It can also be assumed that some

users may access the Service Center from "smart phones," while others may do so from navigation systems, while

still others may do so using interactive TVs.

When a variety of user terminals utilize a variety of wide area communications systems to connect to a variety of

Service Centers in this manner, the type and content of the conditions that must be established will differ for each

individual service usage. In order to provide appropriate service based on these conditions, it is crucial to establish

a mechanism by which the type of conditions and the content established for them are transmitted to an

appropriate entity and interpreted.

This standard summarizes information for assessing internal processing in communication systems, terminals and

so forth (Protocol Management Information) suitable for providing ITS application services utilizing wide area

communication systems.
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DRAFT INTERNATIONAL STANDARD ISO/DIS 15662
Intelligent transport systems — Wide area communication —
Protocol management information
1 Scope

This document provides information for assessing internal processing in communication system, terminals and so

forth (Protocol Management Information) suitable for providing ITS application services utilizing wide area

communication systems. This information is in the form of meta-information of messages as defined by the

application working group of ISO/TC204, and serves as a check list to be considered when installing systems

handling messages. Thus, this information is not necessarily that contained in message instances that are actually

transmitted.

For example, this information is used to organize the characteristics of messages such as those requesting hand-

over based on the relationship between the size of the information service area and the communication range of

each communication system.
Figure 1 — Scope of 15662 (in the architecture of ISO / TC204 / WG16)
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ISO/DIS 15662
2 Normative references

The following normative documents contain provisions which, through reference in this text, constitute provisions of

this International Standard. For dated references, subsequent amendments to, or revisions of, any of these

publications do not apply. However, parties to agreements based on this International Standard are encouraged to

investigate the possibility of applying the most recent editions of the normative documents indicated below. For

undated references, the latest edition of the normative document referred to applies. Members of ISO and IEC

maintain registers of currently valid International Standards.

ISO/IEC 7498-1:1994, Information technology – Open Systems Interconnection — Basic Reference Model: The

basic model.

ISO/IEC 8824-1:1995, Information technology – Abstract Syntax Notation One (ASN.1): Specification of basic

notation.

ISO 14817, Transport information and control systems – Requirements for an ITS/TICS central data registry and

ITS/TICS data dictionaries.
3 Terms and definitions

For the purposes of this, the terms and definitions given in ISO 14817 and the following apply.

3.1 message

Message is defined as grouping of data elements and/or data frames, as well as associated message metadata,

that is used to convey a complete unit of information
3.2 Protocol Management Information

Protocol Management Information is defined as information for accessing the internal processing of communication

systems, terminals and so forth suitable for providing ITS application services utilizing wide area communication

systems. This information is in the form of meta-information of messages as defined by the application working

group of ISO/TC204, and serves as a check list to be considered when installing systems handling messages.

Thus, this information is not necessarily that contained in message instances that are actually transmitted.

4 Protocol Management Information Items

Protocol Management Information is as follows and its structure is described in Annex A.

4.1 Selection of Communication System

This information is for selecting the wide area communication system to be used for the response in accordance

with the requirements for executing the application service, the usage environment of the service user, the status of

the user terminal and so forth.
4.1.1 Responsiveness
4.1.1.1 Descriptive name
ProtocolManagementInformation. responsiveness
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4.1.1.2 Definition

This information represents the response speed and allowed delay time while receiving services in terms of

whether response will take place in real time and how much delay time will be allowed.

In cases where response time is conditioned for executing application services, the wide area communication

system must be selected in accordance with the required response time, and this information can be used to make

such assessment. Furthermore, in case of receiving information in an "on demand" mode, this information indicates

the time from request until reception, for emergency bulletins, it indicates the time until the information reaches the

other party, and for transportation support and the like, it indicates the time until forward road status, pavement

status or other services are completed.
The following depict some examples of categories.
 Within 1 second
 Within 30 seconds
 Within 1 minute
 Within 15 minutes
 15 minutes or longer

In addition, the required response time may be concretely specified as necessary.

4.1.1.3 Descriptive name context
Protocol Management Information.
4.1.1.4 Data concept type
Data Element Concept.
4.1.2 Directionality
4.1.2.1 Descriptive name
ProtocolManagementInformation. directionality
4.1.2.2 Definition

This information indicates the combinations of unidirectional or bidirectional and symmetric or asymmetric with

respect to transmission and reception of information.

In cases where the directionality of communications (unidirectional, interactive, etc.) is needed to execute

application services, the wide area communication system must be selected in accordance with the type of

communication (unidirectional or bidirectional, symmetric or asymmetric), and this information can be used to make

such assessment. Furthermore, interactive indicates cases where a response is expected to a given message,

while unidirectional indicates cases where a response is not expected to a message.

The following depict combination examples.

 Unidirectional: In the case of an uplink, this corresponds to information provided from the vehicle such as

emergency bulletins. In the case of a downlink, it corresponds to cases in which the service user cannot (or

does not need to) make a request in order for the service provider to make the decision to start service.

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 Interactive - symmetric: When service begins in response to a request from the service user and the amount

of data being transmitted and data being received is almost equal

 Interactive - asymmetric (large uplink): When service begins in response to a request from the service user

and when the amount of data being transmitted is greater than the amount of data being received.

 Interactive - asymmetric (large downlink): When service begins in response to a request from the service user

and when the amount of data being received is greater than the amount of data being transmitted.

4.1.2.3 Descriptive name context
Protocol Management Information.
4.1.2.4 Data concept type
Data Element Concept.
4.1.3 Usage environment
4.1.3.1 Descriptive name
ProtocolManagementInformation. usageEnvironment
4.1.3.2 Definition

This information represents the combination of the means of transportation when using services and the speed of

movement when receiving services.

Depending on the usage environment of the service user, the requirements for responsiveness and directionality

may not be met in some cases. For this reason, the wide area communication system must be selected in

accordance with the means of transportation, speed of movement and other usage environment factors, and this

information can be used for making such assessment.
The following depict examples of categories by means of transportation.
— Vehicle: In the case of driving a vehicle
— Public transportation: In the case of riding on public transportation
— Pedestrians: In the case of being on foot or on a bicycle
The following indicate examples of categories by speed of movement.

— Fast: In the case of travelling on expressways, case of traveling on a railroad (60-350 km/h)

— Medium speed: In the case of traveling on ordinary roads (20-60 km/h)

— Slow: In the case of traveling slowly at speeds at which it is possible to stop quickly (less than 20 km/h)

— Stopped: In the case of not being in motion
4.1.3.3 Descriptive name context
Protocol Management Information.
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4.1.3.4 Data concept type
Data Element Concept.
4.1.4 Service (provision) area
4.1.4.1 Descriptive name
ProtocolManagementInformation. serviceArea
4.1.4.2 Definition

This information represents the range/areas at which users receive services and the need for continuity.

In cases where a service area and the continuity of this area and other conditions are required to use application

services, the wide area communication system must be selected to match the areas in which service can be

provided, and this information can be used to make such assessment.
The following depict examples of categories for continuity.

 Continuous area designation: When the area in which service is provided must be continuous and users must

be able to use the service anywhere (this can be broken down into two types: "area-wide continuity" covering

an entire area and "linear continuity" limited to a specific route)

 Non-continuous: When service can only be used in specific non-continuous locations

In addition, positional information of the range and areas at which services are provided are specified as the

range/areas.
Area in which service is
Area in which service is
provided
provided
Area in w hich service is
provided
Figure 2 — Service Provision Areas
4.1.4.3 Descriptive name context
Protocol Management Information.
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4.1.4.4 Data concept type
Data Element Concept.
4.1.5 Service (provision) time
4.1.5.1 Descriptive name
ProtocolManagementInformation. serviceTime
4.1.5.2 Definition

This information represents the information service starting time, service ending time and the continuity of service

time.

When the conditions relating to communication connection time for use of application services are required, the

wide area communication system must be selected to match the service time, and this information can be used to

make such assessment.
The following depict examples of categories.

— Start and end times: In the case of specifying the times that information service starts and ends

— Start time: In the case of specifying the time that information service starts

— End time: In the case of specifying the time that information service ends

— Continuous: In the case of specifying that information is provided continuously

In addition, time is also specified as necessary.
4.1.5.3 Descriptive name context
Protocol Management Information.
4.1.5.4 Data concept type
Data Element Concept.
4.1.6 Bandwidth
4.1.6.1 Descriptive name
ProtocolManagementInformation. bandwidth
4.1.6.2 Definition

This information represents the transmission ability in terms of the transmission capacity and format (text, audio,

simple graphic, still image, video) required by the information to be provided.

Depending on the amount of information to be transmitted and the format of the data involved in the use of

application services, the conditions for responsiveness and data format, etc. may not be satisfied in some cases.

Accordingly, the wide area communication system must be selected to match the transmission capacity, data

format and other aspects of transmission ability, and this information can be used to make such assessment.

The following depict examples of describing transmission capacity and data format.

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— Transmission capacity: Described according to the required transmission speed (bps)

— Format: Text, audio, simple graphic, still image, video, other special format which can describe the data volume

4.1.6.3 Descriptive name context
Protocol Management Information.
4.1.6.4 Data concept type
Data Element Concept.
4.1.7 Connection cost
4.1.7.1 Descriptive name
ProtocolManagementInformation. connectionCost
4.1.7.2 Definition

This information represents the communication cost requirements for providing information.

When conditions relating to communication connection costs (upper limit, etc.) for use of application services are

required, the wide area communication system must be selected to match the cost requirements, and this

information can be used to make such assessment.
The following depict examples of categories.

 Upper limit specification: Case of specifying an upper limit price of the total cost value of communication

 Unit price upper limit specification: Case of specifying the upper limit of the unit price of communication costs

(in communication time units or transmitted information volume units)
In addition, the upper limit cost is specified as necessary.
4.1.7.3 Descriptive name context
Protocol Management Information.
4.1.7.4 Data concept type
Data Element Concept.
4.2 Application identifiers
This information is for identifying requested application services.
4.2.1 Message identifier
4.2.1.1 Descriptive name
ProtocolManagementInformation. messageIdentifier
4.2.1.2 Definition
This identifies the message belonging to an application or a specific batch.
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4.2.1.3 Descriptive name context
Protocol Management Information.
4.2.1.4 Data concept type
Data Element Concept.
4.2.2 Message number
4.2.2.1 Descriptive name
ProtocolManagementInformation. messageNumber
4.2.2.2 Definition

This identifies the order of transmission and reception for a series of messages belonging to an application or a

specific batch.
4.2.2.3 Descriptive name context
Protocol Management Information.
4.2.2.4 Data concept type
Data Element Concept.
4.2.3 Time of message transmission
4.2.3.1 Descriptive name
ProtocolManagementInformation. timeOfMessageTransmission
4.2.3.2 Definition
This information represents the time when an individual message was transmitted.

The time is indicated at which an individual message was transmitted from the communication carrier to the user.

Content Provider
Information Information Communication
User
gathering processing Career
Time of message transmission
Figure 3 — Time of message transmission
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4.2.3.3 Descriptive name context
Protocol Management Information.
4.2.3.4 Data concept type
Data Element Concept.
4.3 Address

This information is for identifying service users and the internal processing of the service provider.

It is necessary to select a wide area communication system and perform routing for use of a

...