Tiêu chuẩn iso ts 17429 2017

[ SOURCE:ISO 241 2-6:2 1 , 3.6] 3.4 ITS-S faci ities laye protocol data unit ITS-FPDU prot ocol data unit as embled b the F aci tiesS rvic s Han le in the ITS-S faci ties la e consis ing

Intel ig ent transport systems —

S stème s inte lligent de tra sport — ITS co p ratifs —

Fo c tion alités de s stations ITS p ur le tra sfe t d’inf rmation entr

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F reword v

Introduction vi

1 Sc ope 1

2 Nor mati ve r eferenc es 1

3 Terms an definitions 2

4 A bbreviated terms 4

5 Co for manc e 4

6 Overview 5

6.1 Motiv tions

5 6.1.1 C mmu ication se vic s 5

6.1.2 General purp se ITS s ation faci ties la ye se vic s 6

6.1.3 Information sharing se vic s 7

6.2 Te h ical spe ification o e view 8

6.2.1 A r chite tur e elements 8

6.2.2 ITS-S a plcation pr oc s es 9

6.2.3 C mmu ication Pr ofie Han le (CPH) 1

6.2.4 Faci ties S rvic sHandle (FSH) 1

6.2.5 C ntent Subsc iption Handle (CSH) 1

6.2.6 S rvic ac es p int (SA P) 1

6.2.7 A pplcation data u it and pr otocol data u it 1

7 General r equirements 13

8 Req irements for the “ITS-S appl cation Pr oc es es” 13

8.1 ITS-S-A P: Req ir ement for data tr ansmis ion 1

8.2 ITS-S-A P: Req ir ement for publshing and subsc ibing to data o je t 1

8.3 ITS-S-A P: Flow type r eg is ration 14

8.4 ITS-S-A P: Tr ansmitting data 14

8.5 ITS-S-A P: Re eiving data 14

8.6 ITS-S-A P: P blshing data o je t 14

8.7 ITS-S-A P: Subsc ibing to the r ec ption of data o je t 1

8.8 ITS-S-A P: Sto ping the r ec ption of data o je t 1

8.9 ITS-S-A P: Re eiving data o je t 1

9 Requirements for the C mmunication Profie Handler 15

9.1 CPH:Initialzation 1

9.2 CPH:Manag ement of commu ication pr ofies 1

9.2.1 CPH: C mmu ication flow pr ofi e p ramete s 1

9.2.2 CPH: Updating commu ication flow pr ofie paramete s 1

9.2.3 CPH: Rep rting commu ication flow s atistics 1

9.3 CPH:Proc s ing data sent b ITS-S a plcation pr oc s es 1

9.3.1 CPH: Pr oc s ing TransmitFlow Data instructions

1 9.3.2 CPH: Che king for a corr esp n ing communication flow pr ofie 1

9.3.3 CPH: Che king for an a vaia le p th 1

9.3.4 CPH: Pe forming ad r es resolution 1

9.3.5 CPH: Che king for ITS-S faci ties se vic s 2

9.3.6 CPH: Tr ansmis ion to the NF-SA P 2

10 Req irements for the Faciities S r vic es Handler 20 1 1 FSH: Initialzation 2

1 2 FSH: ITS-S faci ties la ye pr otocol data u it format (ITS-FPDU) 2

1 3 FSH: Exe ution of faci ties se vic s 2

1 4 FSH: Transmis ion to the NF -SA P 2

1 5 FSH: Re eption of mes ag es 2

11 Req irements for the C ntent Subs r iptio Handler 22

1 1 CSH: Initialzation 2

1 2 CSH: pr oc s ing content publcation fr om ITS-S-A P 2

1 3 CSH: pr oc s ing content subsc iption fr om ITS-S-A P 24

1 4 CSH: pr oc s ing content subsc iption canc lation fr om ITS-S-A P 24

1 5 CSH: transmiting content to ITS-S-A P 24

1 6 ITS-S g ene ic data containe format 24

12 FA-SA P servic e pr imiti ve fu ctions 25 1 1 Ove view 2

1 2 Error codes 2

1 3 TransmitFlowData 2

1 4 Re eiveFlow Data 2

1 5 PublshC ntent 2

1 6 Subsc ibeC ntent 2

1 7 Canc lC ntent 2

1 8 Re eiveC ntent 2

13 NF-SA P ser vic e primiti ve functio s 29 1 1 Re eiveNTSDU 2

1 2 TransmitNTSDU 3

A nne x A (normative) ASN.1 mo ules 31 A nne x B (informative) Pr ofi es 37 Biblog raph y 42

ISO (he Int ernational Org nization for Stan ardization) is a worldwide fede ation of national s an ards

b dies (ISO membe b dies) The work of pr p ring Int ernational Standards is normaly car ied out

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org nizations, g ove nmental an non-g ove nmental, in laison with ISO, also take part in the work

ISO cola orat es closely with the Int ernational Ele trot ech ical C mmis ion (IEC) on al matt ers of

ele trot ech ical s an ardization

The proc d r s used t o develo this document an those int en ed for it furthe maint enanc ar

desc ibed in the ISO/IEC Dir ctives, Part 1 In p rticular the dife ent a pro al c it eria ne ded for the

dife ent ty es of ISO document should be not ed This document was draft ed in ac ordanc with the

edit orial rules of the ISO/IEC Dir ctives, Part 2 ( e www iso org dir ctives)

A tt ention is drawn t o the p s ibi ity that ome of the element of this document ma be the subje t of

p t ent right ISO shal not be held r sponsible for identifying any or al such pat ent right Detais of

any p t ent right identif ied d ring the develo ment of the document wi be in the Introd ction an / r

on the ISO ls of p t ent de larations r c ived ( e www iso org p t ent )

Any trade name used in this document is information given for the convenienc of use s an does not

cons itut e an en orsement

For an ex lanation on the meaning of ISO spe ific terms an ex r s ions r lated to conformity as es ment,

as wel as information a out ISO’s adhe enc to the Wor ld Trade Org nization (WTO) principles in the

Te h ical Bar ie s to Trade (TBT) se the folowing URL: www iso org / iso/ for word html

The committ ee r sp nsible for this document is ISO/TC2 4, Intel gent tra s port sys tems

ITS s ation unit complant with the ITS s ation r fe enc ar hit ectur spe if ied in ISO 2 2 7 ma

eng g e in C o e ative ITS(C-ITS) activitiesinv lving data ex chang esbetwe n ITSs ations in a v riety

of roles Such data ex chang es inclu e, but ar not lmit ed t o:

— data cole t ed b the ro dside infras ructur an transmitt ed t o traff ic control c nt ers, p s ibly

aft er a gr g tion,

— ro dside eq ipment con gur d from the control c nt ers t o proc s a given set of data or is ue

mes ag es t o vehicles,

— ro dside event r port ed t o control c nt ers, an

— bro dcas transmis ion of vehicle s atus an event mes ag es (e.g CAM) t o nearb ITS s ations

An ex mple of an ITS s ation u it eng g ed in a C-ITS activity is a ro dside ITS s ation unit cole ting

traffic -r lat ed information g ene at ed b ro d sensorsan / r b vehicle ITS s ation unit The cole t ed

data can oft en se ve othe purp ses than the originaly int en ed one F or ex mple, the co pe ative

awar nes mes ag e (CAM) from the ETSI C-ITS mes ag e set g ene at ed for traff ic -safety a plcations

can be cole t ed b ro dside ITSs ation u it for ex loitation b traffic eff iciency a pl cations in traff ic

control c nt ers (e.g c ntral ITS s ations) The same information isth s used t o impro e ro d safety, as

wel as traffic eff iciency an also t o r d c gr en ouse g s emis ions

The ex loitation of such ex chang es for purposes not initial y int en ed is made p s ible onc this

ex chang e of information is pe formed in a s an ardiz d wa through an ITS s ation faci ities la e

that is a le t o r co niz mes ag es from spe ific mes ag e set (e.g DATEX I , TP G, C-ITS mes ag e set )

with data ac ording t o data o je t spe ifications from data dictionaries (e.g the common ETSI data

dictionary) an t o forward them t o a plcations w hich ha e an int er s the ein an ha e subsc ibed t o

the del ve y of such mes ag e() an data A Commu ication Prof ile Han le (CPH), a Faci ties S rvic s

Han le (FSH) an a C nt ent Subsc iption Han le (CSH) ar def ined in this Te hnical Spe ification t o

se ve this purpose

Out ide of this Te hnical Spe ification, the commonly used t erm “ mes ag e set” is used t o in icat e a

cole tion of “ mes ag es” used in the ex chang e of information between pe r ITS s ation unit ( e

ISO/TS 1 41 ) These mes ag es ar comp sed of s ructur s sometime r fe r d t o as “data frames”

an / r “data o je t ” w hich ar in turn composed of o je t caled “data element ” ( e SAE J2 3 )

He ein, a slghtly dife ent lexicon is ado t ed The t erm “data dictionary” is used t o in icat e a

cole tion of “ mes ag es” , inclu ing “data o je t” from w hich the mes ag es ar comp sed Th s, he ein,

“data o je t ” ar synonymous with “data frames” and “data element ” Howeve , in this Te h ical

Spe if ication, the t erms ar used with the pr cise meaning t o dis inguish mes ag es an data o je t

from w hich mes ag es ar cons ruct ed

The functionalties spe ified in this Te h ical Spe if ication inclu e a Commu ication Prof ile

Han le (CPH), a Faci ties S rvic s Han le (FSH), an a C nt ent Subsc iption Han le (CSH) These

fu ctionalties ar int en ed t o ena le, an be invoked b , t ech olo y-a nos ic ITS a plcations an t o

faci itat e the deplo ment of C-ITSa plcations that har information In p rticular, these functional ties

alow an a plcation t o

— spe ify a set of faci ties la e se vic s t o be a pled t o it data u it (ADUs),

— alow ITS s ation manag ement t o sele t the o timum communication profile (as a fu ction of time)

for any or al of it data flow s, an

— publ sh information t o and subsc ibe t o information from a c ntral r p sit ory ( he CSH) in a

s an ardiz d wa that ena lessharing of information betwe n a plcations ( he def inition of C-ITS)

These fu ctionalties pro ide a t oolkit faci itating the spe if ication of s an ards and the develo ment

of ITS a plcations [e.g In-Vehicle Signag e (ISO/TS 1 42 ), Cont extual Spe d (ISO/TS 1 42 ), Point of

Int er s , Pro e Data, IVI, LDM synchronization, r mot e ITS s ation configuration, and ITS a plcations

for fr ight, lo is ics, publc transp rtation, et c.] complying with the set of Co pe ative ITS s an ards

Intel ig ent transport systems — Cooperati ve ITS — ITS

ITS stations

This Te hnical Spe ification spe ifies g ene ic me hanisms ena lng the ex chang e of information

betwe n ITS s ations for a plcations r lat ed t o Int el ig ent Transp rt Sy st ems It comples with the

ITS s ation r fe enc ar hit ectur (ISO 2 2 7) an def ines the folowing ITS s ation faci ties la e

fu ctionalties:

— Commu ication Prof ile Handle (CPH);

— Cont ent Subsc iption Han le (CSH);

— F aci ities S rvic s Han le (FSH)

These fu ctionalties ar used b ITS-S a pl cation proc s es (ITS-S-AP) t o communicat e with othe

ITS-S a plcation proc s es an shar information These functional ties desc ibe

— how lower-la e commu ication se vic s as igned t o a given data flow ar a pled t o the se vic

data u it at he v rious la e s in the commu ication prot ocol s ack (CPH, se 6.2.3),

— how cont ent from data dictionaries can be publ shed an subsc ibed t o b ITS-S a plcation

proc s es(CSH, se 6.2.5),

— how wel-k own ITSs ation faci ities la e an manag ement se vic scan be a pl ed t o a plcation

proc s data u it (FSH, se 6.2.4), r leving (ITS-S)a plcation proc s es from ha ing t o implement

these se vic s on their own,

— how se vic ac es p int ( SAP)primitives spe if ied in ISO 241 2-3 ar used,

— se vic primitives for theex chang e of information betwe n ITS-Sa plcation proc s es an the ITS

s ation faci ities la e (FA-SAP), an

— a set of commu ication r q ir ment an o je tives (profiles) using the methods defined in

ISO/TS 1 42 t o sele t the level of pe formanc (bes efort or r al-time, et c ), conf idenc an

se urity (authentication, enc y tion, et c ) for information ex chang e betwe n ITS s ations, such as

data pro ision, event notif ication, ro dside configuration, ma updat e

2 Normati ve r eferences

The folowing document ar r fe r d t o in the t ext in such a wa that some or al of their cont ent

cons itut es r q ir ment of this document F or dat ed r fe enc s, only the edition cit ed a ples F or

un at ed r fe enc s, the lat es edition of the r fe enc d document ( inclu ing any amen ment ) a ples

ISO/TS 1 41 , Intel gent tra s port sys tems — Co pe ati ve sys tems — Clas s ific ation a d ma a ement o

ITS a plc ations in a glo al c ontex t

ISO/TS 1 42 , Intel gent tra s port sys tems — Co pe ati ve sys tems — ITS a plc ation r q ir ment a d

o jec ti ves fr s elec tio o c ommu ic atio profies

ISO 2 2 7, Intel gent tra s port sys tems — Commu ic atio s ac c es s fr la d mo ies (CALM) — Architec tur

ISO 241 2-3, Intel gent tra s port sys tems — Commu ic atio s ac c es s f r la d mo ies (CALM) — ITS

s tatio ma a ement — Part 3 : Se vic e ac c es s p ints

ISO 241 2-6, Intel gent tra s port sys tems — Commu ic ations ac c es s fr la d mo ies (CALM) — ITS

s tatio ma a ement Part 6 : Path a d flow ma a ement

3 Terms and definitions

F or the purposes of this document, the fol owing t erms and def initionsa ply

3.1

ITS-S applcation

ITS-S a plcation proc s r siding in the ITS-S a plcation entity

[ SOURCE:ISO 2 2 7 :2 14, 3.1 ]

3.2

ITS-S applcation proces

ITS-S-AP

element in an ITS s ation that pe forms information proc s ing for a p rticular a plcation, an uses

ITS-S se vic s t o transmit an r c ive information

Not e 1 t o entry: Ex mples of ITS-S ap lication proces es are conte tual spe d (ISO/TS 17 26) an In-Vehicle

Signa e (ISO /TS 17 2 )

[ SOURCE:ISO 2 2 7 :2 14, 3.1 ]

3.3

ITS-S capabiity

ITS-S capabiities

uniq ely ad r s a le prot ocol functional ty

Not e 1 to entry: Ex mples of ITS-S capa ilities are Content Subs ription Han ler (CSH), Fac ilties Se v ic e Ha dle

(FSH), Commu ication Prof ile Han ler (C H)

[ SOURCE:ISO 241 2-6:2 1 , 3.6]

3.4

ITS-S faci ities laye protocol data unit

ITS-FPDU

prot ocol data unit as embled b the F aci tiesS rvic s Han le in the ITS-S faci ties la e consis ing of

nest ed prot ocol data u it ex chang ed betwe n pe r faci ities la e se vic s in ITS-S

3.5

ITS-S communicatio profi e

p ramet eriz d ITS-S communication prot ocol s ack

[ SOURCE:ISO/TS1 42 :2 14, 3.7]

3.6

ITS-S data co tainer

seq enc of ty e-length-v lue (TLV) encoded data o je t

3.7

ITS-S data he der

heade of the “ ITS-S g ene ic data containe format” u iq ely identifying thedata contained in the ITS-S

data containe s b means of data dictionary identifie s u iq e in the ITS domain an the n mbe of

data o je t from the data dictionary in the containe

ITS-S flow

identifia le seq enc of p cket of a given ITS-S flow ty e transmitt ed betwe n a sour e node an a

des ination node

ITS-S flow type

set of charact eris ics desc ibing a data flow

ITS-S g eneric data co taine format

format of an ADU ex chang ed betwe n an “ ITS-S a plcation proc s ”an a Cont ent Subsc iption Han le

(CSH)or betwe n two pe r CSHs containing an “ ITS-S data heade ” an folowed b a n mbe of “ ITS-S

data containe s”

3.13

ITS-S faci ities he der

heade used t o form an “ ITS-S faci ties la e prot ocol data unit”

3.1

ITS-S faci ities service

ITS-S ca a i ty of the ITS-S faci ities la e pro iding a se vic that ma be a pled t o ADUs at the

r q es of the sour e ITS-S-AP

Note 1t o entry: Ex mples of ITS-S facilities services are “time stamping”, “g o-stamping”

3.1

ITS-S manag ed service entity

ITS-S MSE

uniq ely ad r s a le entity in an ITS-Sla e comprised of a set of r lat ed ITS-S ca a i ties

Note 1 to entry: Ex mples of ITS-S mana ed service entities are: a commu ication mod le in the ITS-S ac es

tech olo ies layer (M5, cel ular, etc ), a prot ocol suite in the ITS-S networking & transport layer (IP 6, FNT ,

Ge Networking, 6 oWPAN, etc ), an MSEGenF ac, the entity comprising the g neric ITS-S facilities services

specif ied in this Tech ical Specif ication (C H, CSH, the FSH an pos ibly more)

[ SOURCE:ISO 241 2-6:2 1 , 3.14 ]

3.1

re istered ITS-S flow

ITS-S flow that has be n alocat ed an ITS-S-FlowID

4 A bbreviated terms

BSMD b u ded se ur d manag ed domain ( e ISO/TS 1 41 )

BSME b u ded se ur d manag ed entity ( e ISO 2 2 7)

CSH Cont ent Subsc iption Han le

ITS int el g ent transp rt sy st ems ( e ISO/TS1 41 )

ITS-FlowTy eID ITS flow ty e identif ie ( e ISO/TS 1 42 )

ITS-FPDU ITS s ation faci ities la e prot ocol data u it ( e ISO 2 2 7)

ITS-FSDU ITS s ation faci ities la e se vic data unit se ISO 2 2 7)

ITS-PN ITS p rt n mbe ( e ISO/TS 1 41 )

ITS-S ITS s ation ( e ISO 2 2 7)

ITS-S-AP ITS-S a pl cation proc s ( e ISO 241 2-6)

ITS-S MSE ITS-S manag ed se vic entity

ITS-SCP ITS s ation commu ication prof ile ( e ISO/TS1 42 )

ITS-S-FlowID ITS s ation flow identif ie ( e ISO 241 2-6)

MSE enFac g ene ic faci ties ITS-S MSE

MSE enFacID g ene ic faci ties ITS-S MSE identifie

Detais on conformity of eq ipment with this Te hnical Spe if ication an on conformanc t es s ar

spe ified in the multip rt ISO 2 5 4

6 Ov rview

6.1 Moti vations

6.1.1 C mmunication servic es

Abs racting a pl cations from the commu ications se vic s used t o ex chang einformation betwe n pe r

entities is a useful b sic ar hit ectural principle of int el ig ent transp rt sy st ems (ITS) emb died in the ITS

s ation and commu ication ar hit ectur pr sent ed in ISO 2 2 7 Ap lcations and the commu ications

se vic s they use ar lnked t og ethe using the conc pt of p ths and flow s an commu ication prof iles

desc ibed in ISO 2 2 7 with r lat ed p th and flow manag ement proc d r s spe if ied in ISO 241 2-6

The ITS s ation manag ement entity ( SME) uses commu ication r q ir ment an o je tives pro ided

b the ITS s ation a plcation proc s es (ITS-S-AP) as spe ified in ISO/TS 1 42 t og ethe with the

“ ITS-S ca a i ities” of each la e , dynamic information pro ided b each la e (comput ed int ernal y or

cole t ed from neighb ur ITSs ations) an set of de ision rules (r gulations an p lcies)t o sele t the

mos suita le ITS-S communication prot ocol s ack, also r fe r d t o as ITS-S commu ication prof iles

(ITS-SCP), for each sour e of a p t ential flow as i us rat ed in Figur 1

A set of communication r q ir ment is r fe r d t o as a flow ty e (ITS-FlowTy e) in ISO 241 2-6 The e

ar wel-k own r gist er d Flow Ty es as spe if ied in ISO/TS 1 41 A flow identifie (ITS-S-FlowID )

w hich is uniq e within the ITSs ation is pro ided t o ther q es ing ITSs ation a plcation proc s an

the de ision rules ar commu icat ed b the ITS s ation manag ement entity t o the r lev nt ITS s ation

la e s in the ITS s ation The proc d r s for the manag ement of p ths an flow s ar out of sco e of this

Te hnical Spe ification an ar def ined in ISO 241 2-6

The flow identif ie is used b the C mmu ication Prof ile Han le (CPH) ( e 6.2.3) t o det ermine the

actions t o be a pled t o each a plcation data u it (ADU) ( e Figur 6), pr sent ed b an ITS s ation

a plcation proc s for transmis ion using lowe la e commu ication se vic s From this flow

identifie pointing t o the ITS-S commu ication prof ile sele t ed b the ITSs ation manag ement entity, the

Commu ication Profile Han le det ermines, amongs othe things, how t o pe form ad r s r solution,

w hethe se urity actions ha e t o be pe formed (b the ITS s ation se urity entity), an how t o pr p r

the se vic data u it (ITS-SDUs) for proc s ing b the next lowe la e As shown in Figur 4, at the

faci ities la e , the CPH p s es the ADU t o the faci ities se vic handle (FSH) for a plying wel-k own

faci ities la e se vic s t o the ADU, if r q est ed b the ITS s ation a plcation proc s , t o form an I

TS-FSDU for transmis ion t o the ITS s ation networking an transport la e

The me hanisms pr sent ed in this Te h ical Spe if ication an in ISO 241 2-6 alow dynamic sele tion

of the bes prot ocol s ack at any given time an location ac ording t o the cur ent r sour es (a aia le

ac es t echnolo ies, a aia le commu ication ca a i ties of the des ination, et c ) F or ex mple, an ITS

s ation implementing such ca a i ities could transmit data using an IP communication s ack in one

situation an a non-IP commu ication s ack in anothe situation (network prot ocol a nos ic) Simiarly,

data could be transmitt ed using a long -rang e commu ication t ech olo y (e.g 3G

[8]

) in one situation

an a short-rang e commu ication t ech olo y (e.g 8 2.1

[9]

) in anothe situation, transp r ntly t o the

a pl cation (ac es t ech olo y a nos ic) This eases deplo ment as a plcations can fu ction pro e ly

in dife ent deplo ment sc narios an in situations w he e dife ent commu ication t ech olo ies

ar a aia le Such a plcations would also easiy co e with the deplo ment of new communication

t ech olo ies

Figure 1 — ITS-S communicatio profie selectio proces (ISO/TS 1 74 23)

Figure 2 — ITS statio faci ities layer functionalties

6.1.2 General p r pose ITS statio faciities laye servic es

ITS s ations g ene aly hos a n mbe of a plcations that ins antiat e v riousITS-r lat ed se vic s These

a pl cations, in turn, make use of ITS-S se vic s t o pe form their functions A n mbe of these ITS-S

se vic s r side in OSI la e s5 through 7 ( es ion, pr sentation, an a pl cation layers r spe tively)an

ar inv ked b many a plcations Ex mplesof actions that ar commonly pe formed inclu e:

— det ermination of a network ad r s of the des ination( ) identified b e.g a name (group name), a

URL or a g eo ra hic location;

— det ermination ofa communication prot ocol s ack t o be used t o r ach the des ination();

— ad ition of a time-s amp t o the p y lo d at he sour e;

— ad ition of a g eo-s amp t o the p y lo d at the sour e;

— ad ition of non-r pu iation mat erial t o the p y lo d at the sour e an as es ing the cor e tnes of

the p y lo d at he des ination;

— addition of a uthentication mat erial (a c rtif icat e)t o the p y lo d at the sour e an authentication of

thesour e at the des ination;

— enc y tion of the p y lo d at the sour e an de ry tion at the des ination;

— compr s ion of the p y lo d at the sour e an de ompr s ion at the des ination

Onc g ene ic se vic s that pe form these an simiar common actions ar s an ardiz d an ins antiat ed

in the ITS-S faci ties la e , they ar a ai a le t o al a plcations The a aia i ity of such se vic s

can simplfy, the develo ment of a plcations the eb de r asing develo ment cos s an a plcation

complexity Furthe mor , it alow s a plcations t o make use of up rades t o such se vic s seamles ly

The Fa ci ties S rvic s Han le (FSH) desc ibed in 6.2.4 an spe ified in Cla use 1 pro ides a me hanism

for a pplying gene ic se vic s (ITS-S fa ci ties se vic s) to p ylo ds (ADUs) transmitted b a plcations

(ITS-S APs) up n their r q es Pe forming any of these gene ic se vic s r q ir s the definition ofan ITS-S

fa ci ties la e hea de car ying the information ne es ary to pe form the r ve se action as ociated with

each se vic at the des ination of the data (enc y tion/de ry tion, compr s ion/de ompr s ion, etc.)

The n mbe of ITS-S faci ities se vic s sup ort ed b the Faci ties S rvic s Han le is ext ensible b

means of a g ene ic se vic s r gis ry New se vic s can be ins aled in the ITS-S faci ties la e at any

time, without r q iring modif ications t o this Te h ical Spe ification The r gis ration me hanism

supp rt glo al, r gional, or local se vic s, as wel as wel-known an pro rietary se vic s

In orde for suc es ful ex chang e of ADUs betwe n pe r ITS-S-APs t o oc ur, the se vic s a pled on

transmis ion g ene aly mus be a aia le at the r c ive so the r ve se actions can be pe formed

Me hanisms for ensuring se vic a ai a i ty at b th transmit ing ITS-S-APs an pe r r c iving I

TS-S-APs ar out ide the sco e of this Te h ical Spe ification Such me hanisms can inclu e a plcation level

neg otiation, inclusion of a pro riat e information in se vic adve tisement , and syst em conf iguration

r q ir ment on ITS-Sswith se vic push an updat e fu ctionalty

6.1.3 Infor mation shar ing ser vic es

Mes ag es ex chang ed betwe n ITS s ations contain information that is oft en useful t o a n mbe of

a plcations, not only the pe r a plcation r c iving the mes ag e, and not only ITS a plcations F or

ins anc , the spe d of vehicles contained in mes ag es cole t ed b the ro dside infras ructur could be

used b an a pl cation t o as es traff ic cong es ion an at thesame time be used b anothe a plcation

t o es imat e p lution levels Whi e the information being proc s ed is the same, the se vic s ar q it e

dife ent

Dife ent a plcations would in e d comput e new information b sed on the a gr g tion of dife ent

pie es of data Thiscan be done t o the con ition the ty e of data can easi y be identified an can easiy

be divided int o at omic pie es

Mes ag es sent b vehicles, the ro dside infras ructur an control c nt ers g ene al y contain data

formatt ed dife ently ac ording t o the purp se of the mes ag es, the org nization in charg e of defining

the format, an the r gion w he e they ar used F or ins anc the co pe ative awar nes mes ag e (CAM)

ha e be n def ined b E SI; ISO an CEN ha e def ined mes ag es for

In-Vehicle Signag e (ISO/TS 1 42 )

ar othe mes ag es set that ar hea iy used

S ve al of the defined mes ag es contain simiar basic pie es of information (e.g vehicle spe d or ty e,

time, g eo ra hic p sition, ro d identification) an each mes ag e or set of mes ag es contains a v riety

of these b sic pie es of information This r sult in r d n ancies an ineff iciencies unles the data

contained in these mes ag es is pr sent ed ac ording t o a harmoniz d r fe enc model

This Te h ical Spe ification pro ides spe if ications for a g ene ic means for the sharing of information

from wel-k own mes ag e set These inclu e:

— Spe if ication of a g ene ic data containe (mes ag e) format (ITS-S g ene ic data containe format)

made of a heade (ITS-S data heade ) containing an identif ie of the data dictionary an a n mbe

in icating the q antity of data o je t (ITS-S data containe ) from this data dictionary This ITS-S

faci ities la e heade is proc s ed b the Faci ties S rvic s Han le (FSH) spe ified in Clause 1

— Def inition of a functionalty alowing a pl cations t o publsh data o je t t o an t o subsc ibe t o the

r c ption of a spe if ic data o je t from a given data dictionary This fu ctionalty is pro ided b the

Cont ent Subsc iption Han le (CSH)spe ified in Clause 1

The me hanisms def ined in this Te h ical Spe ification alow information develo ed for spe if ic

se vic s an purp ses t o beshar d among a plcations that can make beneficial use of such information

The mes ag es can contain data o je t from wel -k own an publcly a aia le data dictionaries or

r s rict ed pro rietary data dictionariest o thecon ition data dictionaries ar r gist er d an identif ied

b a glo aly u iq e data dictionary identif ie

These me hanisms alow the harmonization of the transmis ion an han l ng of mes ag es defined

for v arious use cases an fulf il ng r gional r q ir ment , w hie pr se ving spe if ic int er s s of al

s akeholde s The n mbe of meanst o use an combine data o je t contained in mes ag es is lmitles

an o ens the do r t o inno ative a plcations

6.2 Technical specification overview

6.2.1 A r chitecture elements

This Te h ical Spe if ication def ines new fu ctionalties of the ITS-S faci ities la e of the ITS s ation

r fe enc ar hit ectur spe if ied in ISO 2 2 7, an the int eraction of the ITS-S faci ities la e with othe

la e s an entities of the ITS s ation r fe enc ar hit ectur

— Cla use 8 spe if ies ad itional r q ir ment for ITS-S a plcation proc s es (ITS-S-AP) in orde t o

use the ITS-S faci tiesla e ca a i ities spe ified in this Te h ical Spe if ication

— Cla use 9 spe ifies the C mmu ication Prof ile Han le (CPH) ca a i ty within the ITS-S faci ties

la e Thisca a i ty simpl f ies the ex chang e of information between ITSs ation u it or within an

ITS s ation u it, i.e betwe n dis inct nodes(ITS-SCUs) of the same ITS s ation u it

— Cla use 1 spe if ies the Faci ties S rvic s Han le (FSH)ca a i ity within the ITS-S faci ties la e

This ca a i ty a pen s an ITS-S faci ties la e heade t o the a pl cation data unit ADU), w heneve

“ ITS-S faci ities se vic s” ar r q est ed b the transmit ing ITS-S-AP an r q ir tr atment of the

ADU at b th the sen e an the r cipient (s) of the p cket containing the ADU

— Cla use 1 spe if ies the C nt ent Subsc iption Han le (CSH) ca a i ity of the ITS-S faci ties la e

This ca a i ty is used t o delve cont ent formatt ed ac ording t o the “ITS-S g ene ic data containe

format” t o al ITS-S a pl cation proc s es w hich ha e subsc ibed t o the r c ption of data o je t

from a data dictionary

— Clauses 1 and 1 spe ify the se vic ac es p int ( SAP) b means of w hich the ITS-S faci ities

la e int eract with ITS-S a plcation proc s es (ITS-S-APs) an with the ITS-S networking an

transp rt la e

— Annex A pro ides ASN.1 definitions

— Annex B pro ides an ex mples of commu ication profiles for w hich se vic s spe if ied in this

Te hnical Spe ification ar ne es ary

ITS s ation ar hit ectur element conside ed in this Te h ical Spe if ication ar i lus rat ed in Figur 3

Figure 3 — ITS statio ar hitecture elements considered in this Technical Specificatio

6.2.2 ITS-S applcatio pr oc es es

As in icat ed in ISO/TS 1 42 , an ITS-S a plcation proc s (ITS-S-AP) ma r side in the ITS-S

a plcation entity (a o e the commu ication s ack), the ITS-S manag ement entity or any of the ITS-S

la e s Ex mples of ITS-S-APs inclu e the folowing

— ITS-S-APs locat ed in the ITS-S a pl cation entity: e.g C nt extual Spe d (ISO/TS 1 42 )

[1]

In- Vehicle

Signag e (ISO/TS 1 42 )

[2],

Point of Int er s , Ele tric Vehicle Charging Sp t

— ITS-S-APs locat ed in the ITS-S manag ement entity: e.g r mot e ITS s ation manag ement

onc I

TS-FSDUs ar pr sent ed t o the ITS-S faci ities la e in a manne complying with ISO/TS 1 42 an

ISO/TS1 41

In orde t o use ITS-S faci ities la e fu ctionalties t o commu icat e with pe r ITS-S-APs, an I

TS-S-AP shal f irs r gist er it communication r q ir ment t o the ITS-S manag ement entity ( SME) using

the proc d r s spe if ied in ISO/TS 1 42 This firs -st ep r gis ration mus be pe formed for each

“commu ication sour e” identif ied b an Int erfac No ( e ISO/TS 1 42 :2 14, 5.1) an it ITS-S

flow ty e As a r sult of a suc es ful commu ication r q ir ment r gis ration, the r q es ing I

TS-S-AP o tains an ITS-S flow ty e identifie (FlowTy eID ) from the ITS-S manag ement entity for each

r gist er d commu ication sour e This informs the ITS-S-AP that the ITS s ation has the ne es ary

ITS-S ca a i ities t o sup ort ITS-Sflow s with charact eris ics of such ITS-S flow ty es

Befor transmit ing, anITS-S-AP shal r gist er it ITS-S flows cor espon ing t o the r gist er d ITS-S

flow ty es an the communication sour es using the methods spe if ied in ISO 241 2-6 This se on

st ep r gis ration shal be pe formed for each des ination t o w hich ADUs ar t o be sent As a r sult of

each suc es ful ITS-S flow r gis ration, the r q es ing ITS-S-AP o tains an ITS-S flow identif ie (I

TS-S-Flow ID ) from the ITS-S manag ement entity The ITS-AP can now s art transmit ing ADUs

ITS-S-APstransmit their ADUs (ITS-FSDUs) an the cor esp n ing ITS-Sflow identif ie (ITS-S-FlowID )

t o the u de lying ITS s ation layer for furthe proc s ing ( e Figur 6) The ITS-S flow identifie p int

t o the information ne es ary for each la e t o pro e ly form it PDUs for transmis ion t o it pe r( )

This information is contained in the spe ific commu ication prof ile (ITS-SCP) sele t ed b the ITS-S

manag ement entity

ADUs ma be transmitt ed down t o the ITS-S networking an transp rt la e eithe dir ctly without

furthe proc s ing b the ITS-S faci ities la e or aft er invoking a set of r q est ed se vic s of the ITS-S

faci ities la e In eithe case, the ITS-FSDU ( he ADU aft er proc s ing) or the ADU it elf is transmitt ed

t o the ITS-S networking an transp rt la e ( in the form of ITS-NTSDUs) w he e the ITS flow identifie is

used t o c eat e the NPDU using the a pro riat e port n mbe s astransp rt la e sour e an des ination

ad r s es (p rt ) Not e that dynamicaly as igned port can be used t o implement s at eful se vic s in

the faci ties la e

In ad ition, an ITS-S-AP can publ sh or subsc ibe t o the r c ption of data o je t ( identif ied b

DataObje tIDs) from data dictionaries identified b DataDictionaryIDs These dictionaries can bewel

-k own, publcly a ai a le dictionaries, such as SAE J2 3 , ETSI Common Data Dictionary, DATEX I ,

TP G an RDS-TMC, or pro rietary dictionaries w hose use is r s rict ed t o entities a uthoriz d b the

owne of the dictionary Publcation an subsc iption ar ITS-S int ernal proc s es, an ar pe formed

using the PublshCont ent an Subsc ibeC nt ent r q es s, r spe tively ( e 6.2.5) TheADUs ex chang ed

betwe n the CSH an an ITS-S-AP ar formatt ed ac ording t o the “ ITS-S g ene ic data containe format”

The flow of information betwe n ITS-S-APs, the ITS-S manag ement entity an the ITS-S faci ties la e

is shown in Figur 4

NOTE S rvice primitive fu ctions def ined in ISO /TS 17 2 /ISO 2410 -6

Figure 4 — Relation betwe n ITS-S appl catio proces and othe elements of the ITS statio

6.2.3 C mmunication Pr ofie Handler (CPH)

The Commu ication Profile Handle (CPH) is a manag ement ITS-S ca a i ity of the ITS-S faci ties

la e that is r q ir d t o proc s ITS-FSDUs /ADUs ( e Figur 6), transmitt ed b an ITS-S a plcation

proc s (ITS-S-AP) It che ks w hethe the e is a v ld commu ication prof ile (ITS-SCP) cor esp n ing

t o the ITS-S flow identif ie as ociat ed with the ITS-FSDU The CPH causes the a pro riat e actions t o

be pe formed ac ording t o the p ramet ers of the commu ication prof ile (ITS-SCP), inclu ing the

transmis ion t o the FSH if the ITS-SAP r q est ed the use of ITS-S g ene ic faci ty la e se vic s

The transmis ion of data from the ITS-S a plcation proc s t o the ITS-S networking and transp rt

la e is i us rat ed in Figur 5 FSH se vic s ar inv ked only w hen ITS-S faci ties se vic s ar t o be

a pled

Figure 5 — Data transmis io

The ITS-SCP is det ermined b the ITS-S manag ement entity an is as ociat ed with an ITS-S flow

identifie (ITS-S-Flow ID ) It pro ides the ne es ary information for the CPH t o manag e each ITS-S flow

ac ording t o it spe ificities (w hich faci ities se vic s should be a pled, w hich prot ocols mus be used

in the ITSs ation network an transp rt la e , et c )

The ls of activeITS-SCPs is maintained within the ITS-S faci ities la e an can beupdat ed or r mo ed

at any time up n r q es from the ITS-Smanag ement entity

The CPH int eract with the ITS-S manag ement entity, the ITS-S se urity entity, the ITS-S a pl cation

entity an the ITS-Snetworking and transp rt la e of the ITS-S through SAPs as def ined in ISO 241 2-3

(MF-SAP an SF-SAP) using the proc d r s spe ified in ISO 241 2-6 an in this Te hnical Spe ification

6.2.4 Faciities S r vic es Handler (FSH)

The F aci ties S rvic s Han le (FSH) is an ITS-S ca a i ity of the ITS-S faci ties la e It is used t o a ply

“ ITS-S faci ties se vic s” t o ITS-FSDUs ( e Figur 6) Ex mples of “ ITS-S faci ties se vic s” inclu e

se vic s r lat ed t o se urity (enc y tion, authentication, non-r pu iation, priv cy), time s amping, g

eo-s amping, an compr s ion The spe if ication of ITS-Sfaci ities se vic s isout of sco e of this Te h ical

Spe ification

The ls of “ ITS-S faci ities se vic s” that mus be a pled ont o the ITS-FSDU is neg otiat ed between the

ITS-S a plcation proc s an the ITS-S manag ement entity w hen the “ ITS-S flow” is r gist er d Onc

an ITS-S flow identifie (ITS-S-FlowID ) is alocat ed, the flow o je t p int ed t o b the as igned I

TS-S-Flow ID is pro ided b the ITS-S manag ement entity t o the ITS-S faci ties la e The flow o je t contains

the l s of ITS-S faci tiesse vic s that mus be a pled t o ITS-FSDU identified b the ITS-S-FlowID

ITS-FSDUs transmitt ed b an ITS-S a plcation proc s ar initialy han led b the C mmunication

Prof ile Han le an then p s ed t o the FSH w heneve at leas one of the “ ITS-S faci ities se vic s” is

l st ed in p ramet ersp int ed b the ITS-S-FlowID

The FSH cons ruct the ITS-S faci ties la e prot ocol data u it (ITS-FPDU) b a pen ing an “ITS-S

data heade ” in front of the ADU transmitt ed b the ITS-S a plcation proc s in orde t o car y the

information ne ded b the r cipient (s) t o pe form the ne es ary o e ation() on the ITS-S faci ties

la e prot ocol data unit e.g de ompr s ing w hen data ar compr s ed, de ry ting w hen the data ar

enc y t ed, authenticating w hen authentication data ar pro ided) Each such mes ag e contains an

ITS-S faci ties heade

6.2.5 C ntent Subs r iptio Handle (CSH)

The Cont ent Subsc iption Han le (CSH) is an ITS-S ca a i ty of the ITS-S faci ties la e It is used

t o manag e the subsc iption of ins anc s of ITS-S a plcation proc s es t o the r c ption of publshed

data o je t Data o je t ar identified b a DataObje t identif ie an ar formatt ed ac ording t o the

dictionary t o w hich they belong

As a r sult of a suc es ful subsc iption, publshed data o je t transmitt ed in mes ag es proc s ed b

the ITS-Sfaci ities la e ar p s ed t o al ITS-S-APs subsc ibed t o the r c ption of such data o je t

6.2.6 S rvic e ac c es points (SA P)

The se vic ac es p int ( SAP) of the MF-SAP, the FA-SAP, the NF-SAP an the SF-SAP pro ide the

me hanisms for the ITS-S faci ties la e t o int eract with the ITS-S manag ement entity, the ITS-S

a plcation entity, the ITS-S networking an transport lat er, an the ITS-S se urity entity, r spe tively

These se vic s an r lat ed r q es an conf irm se vic primitives ar spe if ied in ISO 241 2-3

— The se vic s REQUEST and COMMAND of the MF-SAP ar used b the C mmunication Prof ile

Han le t o o tain an updat e ITS-S commu ication prof iles (ITS-SCP) from the ITS-Smanag ement

entity an t o pro ide the ITS-S manag ement entity r lev nt information a aia le at the ITS-S

faci ities la e (ITS-S ca a i ties, s atis ics on a given ITS-S flow, et c )

— The se vic s of the FA-SAP with some ASN.1 detai s spe if ied in ISO 241 2-3 ar used b the

Commu ication Prof ile Han le t o transmit pay lo d betwe n the ITS-S faci ities la e an the ITS-S

a plcation entity, an b the C nt ent Subsc iption Han le (CSH) t o manag e the subsc iption of

ITS-S-APs t o the del ve y of a c rtain data o je t

This Te h ical Spe if ication spe ifies functions car ied in se vic primitives of the se vic s

introd c d a ove

6.2.7 A pplcatio data unit and pr otoc ol data unit

Figure 6 — ITS station appl catio data units and protocol data units (ISO 2121 7)

Prot ocol data u it (PDU) transmitt ed between pe r ITS s ations (ITS-FPDU, ITS-NTPU) an S rvic

Data Unit ( SDU) ex chang ed localy in SAPs of ITS s ation (ITS-FSDU, ITS-NSDU) ar def ined in

ISO 2 2 7 :2 14, 7.2.3 and ISO 2 2 7 :2 14, Figur 1 an i lus rat ed in Figur 6

7 General r equir ements

An authoriz d ITS-S a plcation proc s or a pe mitt ed ITS-S a plcation proc s c rtified for a BSME

an identified b an ITSa pl cation identif ie (ITS-AID ) as spe if ied in ISO/TS 1 42 and ISO/TS1 41

shal implement thefu ctions spe if ied in Cla use 8

The fu ctionalties of the ITS-S faci ties la e spe ified in this Te h ical Spe ification shal be

implement ed as ITS-Sca a i ities of an ITS-Smanag ed se vic entity (ITS-S MSE) at the ITS-S faci ties

la e ( Gene ic F aci ties ITS-S MSE” — MSE enF ac in short) Gene al proc d r s r lat ed t o the

manag ement of ITS-S MSEs ar spe if ied in ISO 241 2-6

The “Gene ic F aci ities ITS-S MSE” shal be alocat ed a glo al y u iq e identif ie (MSEGenFacID )

NOTE ITS-S MSEs are identif ied by glo aly u iq e identif ier Glo al y u iq e ITS identif ier are specif ied

in ISO /TS 17419

The “Gene ic ITS Station F aci ties” ITS-S MSE has the folowing ITS-S ca a i ties:

— Commu ication Prof ile Handle (CPH);

— F aci ities S rvic s Han le (FSH);

— Cont ent Subsc iption Han le (CSH)

An ITS s ation sup orting ITS-S a pl cation proc s es complant with ISO/TS 1 42 shal implement

the CPHITS-S ca a i ty as spe if ied in Clause 9

An ITS s ation alowing ITS-S a plcation proc s es t o r q es the use of “ ITS-S faci ities se vic s” shal

implement the FSH ITS-Sca a i ity as spe if ied in Cla use 1

An ITS s ation alowing ITS-S a plcation proc s es t o publ sh or subsc ibe data o je t from a data

dictionary shal implement heCSH ITS-S ca a i ty as spe if ied in Cla use 1

Wheneve ne es ary, the “Gene ic ITS Station Faci ties” ITS-S MSE shal int eract with the ITS-S

manag ement entity using se vic s of the MF-SAP as spe if ied in ISO/TS1 42 an ISO 241 2-6

Wheneve ne es ary, the “Gene ic ITS Station Faci ties” ITS-S MSE shal int eract with the ITS-S

a plcation entity using se vic s of the FA-SAP as spe ified in ISO 241 2-3 an Clause 1

Wheneve ne es ary, the “Gene ic ITS Station Faci ties” ITS-S MSE shal int eract with the ITS-S

networking an transport la e using se vic s of the NF-SAP as spe if ied in ISO 241 2-3 an Clause 1

8 Requir ements for the “ITS-S appl cation Proc es es”

8.1 ITS-S-A P: Requirements for data transmis ion

In orde t o transmit data, the ITS-S-AP shal pe form the folowing actions:

— ITS-S-AP shal r gist er it commu ication flow r q ir ment asspe ified in 8.3;

— ITS-S-AP shal r gist er it ITS-S flow s as spe ified in ISO 241 2-6;

— ITS-S-AP shal transmit ADUs as spe ified in 8.4;

— ITS-S-AP shal lst en for ADUsas spe if ied in 8.5

8.2 ITS-S-A P: Requirements for publ shing and subs ribing to data objects

In orde t o publ sh an subsc ibe t o data formatt ed as data o je t from a data dictionary using the

publ cation/subsc ibe se vic desc ibed in 6.2.5 an spe ified in Clause 1 , the ITS-S-AP shal

pe form the folowing actions:

— ITS-S-AP shal r gist er it commu ication flow r q ir ment asspe if ied in 8.3.

— ITS-S-AP shal r gist er it ITS-S flow s as spe if ied in ISO 241 2-6

— ITS-S-AP shal publsh data o je t as spe if ied in 8.6

— ITS-S-AP shal subsc ibe t o the r c ption of data o je t as spe if ied in 8.7

— ITS-S-AP shal canc l the subsc iption r c ption of data o je t as spe if ied in 8.8

8.3 ITS-S-A P: Flow type reg istration

The ITS-S-AP shal r gist er it communication flow r q ir ment with the ITS-S manag ement entity

using the proc d r s spe if ied in ISO/TS 1 42 an ISO 241 2-6 An ITS-S flow ty e identifie (I

TS-FlowTy eID ) is r c ived from the ITS-S manag ement entity for each suc es ful r gis ration of a

commu ication int erfac an it “ ITS-S flow ty e”

NOTE 1 Whenever ADUs are format ed ac ording to the ITS-S g neric data contained format (i.e when ITS-S

facilities services are ap lied), ITS-F DUs are transmit ed to the wel-k own port POR T_FSH

NOTE 2 Packets from the ITS-S ap lication proces can either b sent t o a wel -k own port cor espon ing to

the F acilities S rvices Han ler (POR T _FSH) or a dedicat ed port provided by the ITS-S ap lication proces T e

former al ows the ap lication t o b nef it, at b th the sen ing an receiving side, from ITS-S facilities services

(security, compres ion, time-stamping, etc ) ap lied by the ITS-S facilities layer at the req est of the ITS

ap lication proces es T is req ires the use of a short ITS-S facilities he der, therefore han ling by the ITS-S

facilities layer (FSH) at reception T e ITS-S facilities layer wil for e the transmis ion of packets t o POR T_FSH

whenever an ITS-S facilities layer service is used T e latt er al ows ap lications t o mana e security an other

services on their own an t o e se the su port of e isting ap lications

In orde t o a ply dis inct ITS-S faci ties se vic s ont o dis inct ITS-S flows of the same flow ty e, the

ITS-S-AP mus r al z dis inct commu ication flow r q ir ment r gis rations

8.4 ITS-S-A P: Transmit ing data

The ITS-S-AP shal sen ADUs t o the ITS-S faci ities la e using the se vic primitive fu ction

Transm it lowData spe ified in 1 3

NOTE T is proced re ap lies t o an ty e of data directly transmit ed from an ITS-S-AP to pe r ITS-S-APs

There are no req irements on the format an p rpose of the data content Transmis ion of p blished cont ent is

re lized using the service primitive fu ction P b ish o t n specif ied in 8.6

8.5 ITS-S-A P: Rec ei ving data

The ins anc ITS-S-AP identified b appID shal proc s the R eceive lowDa a notification spe ified

in 1 4 in orde t o r c ive ADUs using the g ene ic se vic s sup ort ed b the ITS-Sfaci ties la e

NOTE T is proced re ap lies t o an ty e of data directly transmit ed from an ITS-S-AP to pe r ITS-S-APs

There are no req irements on the format an p rpose of the data content R eception of p blished content is

re lized using the in ication R ec ive o t n specif ied in 8.9

8.6 ITS-S-A P: Publ shing data objects

The ITS-S AP can publsh data o je t on it own or using the cont ent ubsc iption me hanism (CSH) of

the ITS-Sfaci ities la e ( pe if ied in Cla use 1 )

The ADU shal be formatt ed using the“ ITS-S data heade ” as spe ified in Ta le 6folowed b a seq enc

of “ ITS-S data containe s” containing ty e length v lue (TLV) encoded data o je t as spe if ied in

Ta le 7 Every f ield is oct et algned

In orde t o publsh a data o je t (defined in a data dictionary) using the publcation me hanism of the

CSH, the sour e ITS-S-AP shal transmit the ADU using the se vic primitive fu ction Publi hContent

as spe ified in 1 5

Cr dentials shal be pr sent ed for data o je t defined in a data dictionary for w hich ac es is r s rict ed

NOTE 1 T ose c edentials are req ired for the ITS-S facilities layer t o as es p blication rights of the ITS-S-AP

Alt ernatively, the ITS-S-AP can also transmit the ADU on it own, without r lying on the publcation

me hanism pro ided b the ITS-S faci ities la e In this situation, the ITS S-FlowID used b the

ITS-S-AP is pro ided b the ITS-S manag ement entity as a r sult of the ITS-S flow r gis ration with

commu ication r q ir ment paramet ers in icat ed in B.1 The ITS-S-AP shal then transmit the ADU

using the se vic primitive function T ansm itFlo Data as spe if ied in 1 3

NOTE 2 T is is req ired so that CSHs instaled on other ITS stations or distinct ITS-SCUs of the same ITS station

can forward the p blished content t o ITS-S-AP int erested in such data cont ent In particular, the commu ication

req irements in icate that the data are proces ed by the entity listening on POR T _FSH

Table 1 — ITS-FSDU transmitted directly by the ITS-S-AP

Concatenation of a ITS-S Data He der an su seq ent ITS-S

Data Container containing data o ject p blished by an ITS-S

ap lication proces

8.7 ITS-S-A P: Subs ribing to the r ec eption of data objects

In orde t o subsc ibe t o the r c ption of a data o je t (def ined in a data dictionary) using the

publcation/subsc ibe me hanism desc ibed in 6.2.5 an spe if ied in Clause 1 , the sink ITS-S-AP

ins anc shal inform the ITS-S faci ties la e using the se vic primitive fu ction SubscribeContent

as spe ified in 1 6

Cr dentials shal be pr sent ed for data o je t defined in a data dictionary for w hich ac es is r s rict ed

NOTE T ose c edentials are req ired for the ITS-S facilities layer to as es ac es rights of the ITS-S-AP

8.8 ITS-S-A P: Stopping the rec eption ofdata objects

In orde t o st opthe r c ption of a data o je t (defined in a data dictionary) using the publcation/subsc ibe

me hanism desc ibed in 6.2.5 an spe if ied in Clause 1 , the sink ITS-S-AP ins anc shal inform the

ITS-S faci ities la e using the se vic primitive function CancelCont nt as spe if ied in 1 7

8.9 ITS-S-A P: Rec ei ving data objects

Up n r c ption of a R eceiveCon ent notif ication from the ITS-S faci ties la e , the ins anc I

TS-S-AP identif ied b appID shal proc s the ADU

9 Requirements for the Communication Profi e Handler

9.1 CPH: Initial zation

The C mmunication Profile Han le (CPH) shal be implement ed as an ITS-S ca a i ty of the “Gene ic

Faci ities ITS-MSE” (MSEGenFac) as spe ified in ISO 241 2-6

The CPH shal be alocat ed a glo aly u iq e ITS-S ca a i ty identif ie r corded in a r gis ry.

NOTE ITS-S capa ilities are identif ied by glo al y u iq e identif ier Glo aly u iq e ITS identif ier are

specif ied in ISO/TS 17419

Wheneve the C mmu ication Prof ile Han le is initial z d, the ITS-S faci ities la e shal

— r port t o the ITS-S manag ement entity that the CPH is up an run ing using the r q es N tifyCapa

with m seID set t o MSE enFacID an ca aList containing detai s of the CPH ITS-S ca a i ty,

— r q es the ITS-S manag ement entity t o pro ide exis ing commu ication flow profiles using the

r q es GetCP,

— pe form the o e ations spe ified in 9.2 an 9.3

9.2 CPH: Manag ement of communication pr ofi es

9.2.1 CPH: Communication flow profie parameter s

The ITS-S manag ement entity uses the comman SetC spe ified in ISO 241 2-6 t o pro ide

commu ication flow prof iles t o the ITS-S faci ities la e F olowing the r c ption of the SetCP

commands, the ITS-S faci ties la e maintains information a out commu ication flow prof iles as

i lus rat ed in Ta le 2 Mos of the p ramet ersar f iled up with the information dir ctly pro ided from

the ITS-S manag ement entity; s atis ics a out flow s (cfpStat ) ma be infe r d int ernaly within the

ITS-S faci ities la e

NOTE The paramet er of the entries are def ined in Ta le 2 T e method used to record these commu ication

flow prof iles is implementation specif ic an is out of s ope of this Tech ical Specif ication

Table 2 — C mmunicatio flow profie parameter used by the Communicatio Profi e Handler

C mmu ication flow

In icates whether there is no path cur ently

selected for this flow (NUL ), or that here do s

not se m t o b an path alowing transmis ion at

ful rat e (C H_PATHCO GEST D), or that here

e ists at le st one cle r path (C H_OK)

T pe of destination (single receiver, or a grou

of receivers) specif ied in ISO/TS 1742

The ma imum ITS-F DU size is in icated b

the ITS-S manag ement entity in order t o avoid

fra mentation of the packets given the prot ocols

an services used for this flow

cfp riority

Use P i r ty

Priority t o b ap lied to this ITS-S flow

C mmu ication flow

p ramet ers

cfp athAvaila ility

C p a hA va l b l ty

In icates whether there is no path cur ently

selected for this flow (NUL ), or that there do s

not se m t o b an path alowing transmis ion at

ful rate (C H_PATHCO GEST D), or that there

e ists at le st one cle r path (C H_OK)

cfpS rvS c

C p In os

List of security services (su ported b ITS-S

capa ilities) to b ap lied t o ADUs of this ITS-S

flow These services req ire proces ing by the

FSH (an the ITS-S security entity) an the

ad ition of the ITS-S facilities he der S curity

services inclu e sour e authentication, non-

rep diation, data inte rity,data conf identiality

The specif ication of these services is out of s ope

of the Tech ical Specif ication

cfpS rv F ac

C p In os

List of faci ties services (su ported b ITS-S

capa ilities) to b ap lied t o ADUs of this ITS-S

flow T ese services may b ex ecut ed once or on

a per -pack et b sis (e.g time stamping) T ese

services req ire proces ing by the FSH an the

ad ition of the ITS-S facilities he der The spec

-if ication of these services is out of s ope of the

Tech ical Specif ication

cfpStats

F owS a ist csL st

S t of statistic colected for e ch ITS-S flow

specified in ISO 241 2-6 (n mber ofpackets

sent, n mber of ack owledg ments receiv ed,

n mb r of ne ative ack ow ledg ements received,

transmis ion rate, etc )

9.2.2 CPH: Up ating c ommunicatio flow profie parameter s

The ITS-Smanag ement entity uses the comman SetCP spe ified in ISO 241 2-6 with CfsCpsA ction

set t o “c eat e” t o ins ruct the ITS-S faci ties la e that a new commu ication prof ile identif ied b an

ITS-S flow identif ie hasbe n det ermined

Up n r c ption of a comman SetC with CfsCpsA ction set t o “c eat e” , the p ramet ers of the

commu ication prof ile pro ided b the ITS-S manag ement entity shal be maintained int ernaly as

i lus rat ed in Ta le 2 Up n suc es ( uc es ful ad ition of the entry), the e ror code p m OK spe if ied in

ISO 241 2-6shal be r turned t o the ITS-S manag ement entity

The ITS-Smanag ement entity uses the comman SetCP spe ified in ISO 241 2-6 with CfsCpsA ction

set t o “ updat e” t o ins ruct the ITS-S faci ities la e that the p ramet ers of an exis ing communication

profile identified b FlowID ha e be n updat ed

Up n r c ption of a comman SetCP with C sCpsA ction set t o “ updat e” , the p ramet ers maintained

int ernaly shal be updat ed for the communication profile identif ied b FlowID:

— Up n suc es ( uc es ful updat e of the entry), the e ror code pfm OK spe ified in ISO 241 2-6 shal

be r turned t o the ITS-S manag ement entity

— Up n fai ur , the e ror code pfm FlowInvalid spe if ied in ISO 241 2-6 shal be r turned t o the

ITS-S manag ement entity

The ITS-S manag ement entity uses the se vic primitive SetCP with CfsCpsA ction set t o “delet e”

t o notify the ITS-S faci ities la e that an exis ing communication profile identified b FlowID is no

long er ne ded an hast o be delet ed

Table 2 (c ontin ed)

Up n r c ption of a comman SetCP with CfsCpsA ction set t o “delet e” , al entries maintained

int ernaly cor esp n ing t o FlowID shal be delet ed

— Up n suc es ( uc es ful deletion of the entry), the e ror code pfm OK spe ified in ISO 241 2-6 shal

be r turned t o the ITS-S manag ement entity

— Up n faiur , the e ror code pfm Fail spe ified in ISO 241 2-6 shal be r turned t o the ITS-S

manag ement entity

NOTE If neces ary t o adapt o chang of network con itions, the ITS-S mana ement entity may u dat e the

commu ication prof ile for a given flow at an time even when packets of this flow have alre d b en transmit ed

This may result in the chang of the network prot ocol or transport prot ocol in icated in the commu ication

prof ile The b nef it of using g neric ITS-S facilities layer services is that his chang of the commu ication prof ile

can b performed transparently to the ITS-S-AP (se mles han over) T is is particularly useful when an ac es

t ech olo y b comes u availa le or overlo ded

9.2.3 CPH: Repor ting c ommunication flow statistic

The ITS-S manag ement entity uses the se vic primitive function CollectFlowStats t o ins ruct the

ITS-S faci ties layer t o cole t s atis ics a out a given ITS-S flow or the entir set of ITS-S flows The

r q est ed actions ar pe formed for al ITS-S flow s if the v lue of FlowID is set t o 0; othe wise, the

r q est ed action ar pe formed only for theITS_S flow identif ied b FlowID

Up n r c ption of a Collec FlowStats ins ruction, the ITS-S faci ities la e shal r sp n with

an e ror using the se vic primitive function CollectFlowStatsC nf if the e is no k own

commu ication flow profile cor esp n ing t o FlowID, othe wise,

— if CfsCpsA ction is set t o “ tart” , the cole tion of s atis ics isinitiat ed for the ITS-S flow identif ied

b FlowID,

— if CfsCpsA ction is set t o “ t op the cole tion of s atis ics is st op ed an s atis ics ar delet ed for

theITS-S flow identified b FlowID,

— it CfsC sA ction is set t o “ uspen ” , the cole tion of s atis ics is initiat ed for the ITS-S flow

identif ied b FlowID,

— if CfsCpsA ction is set t o “ resume” , the cole tion of s atis ics is r sumed for the ITS-S flow

identif ied b FlowID,

— if CfsCpsA ction is set t o “ report” , s atis ics maintained int ernal y shal be r turned t o the ITS-S

manag ement entity using the se vic primitive function C llectFlo StatsConf

9.3 CPH: Proces ing data sent by ITS-S appl cation proc es es

9.3.1 CPH:Proc es ing TransmitFlow Data instr uctions

The se vic primitive fu ction Transm itFlowData is used b ITS-S-APs t o transmit ITS-FSDUs using

g ene ic se vic s supp rt ed b the ITS-S faci ties la e The f ield FlowID in the ITS-FSDU alow s the

ITS-S faci ities la e t o r trieve the commu ication profile ma ped t o the a pro riat e ITS-S flow

Up n r c ption of a Transm itFlowData ins ruction from an ITS-S-AP, the actions spe if ied in 9.3.2,

9.3.3, 9.3.4, 9.3.5 an 9.3.6 shal be ex ecut ed, in this orde

NOTE T e pre-req isite for the ex ecution of these instructions is that the ITS-S-AP has previously re istered

its ITS-S flow commu ication req irements an o jectives with the ITS-S mana ement entity using the methods

specif ied in ISO /TS 1742 an ISO/TS 1742 As a result of this re istration, the ITS-S-AP has o tained an

ITS-S-Flow ID for e ch ITS-S flow The ITS-S-Flow ID is then inclu ed in e ch ITS-FSDU sent by the ITS-S-AP In the

me ntime, the ITS-S mana ement entity informed the Commu ication Prof ile Han ler a out the commu ication

prof iles used for e ch ITS-S flow