CPM-PDU-Descriptions { itu-t (0) identified-organization (4) etsi (0) itsDomain (5) wg1 (1) ts (103324) cpm (1) major-version-1 (1) minor-version-1(1)}

DEFINITIONS AUTOMATIC TAGS ::=

BEGIN

IMPORTS

ItsPduHeader, MessageRateHz, MessageSegmentationInfo, OrdinalNumber1B,  ReferencePosition, StationType, TimestampIts
FROM ETSI-ITS-CDD {itu-t (0) identified-organization (4) etsi (0) itsDomain (5) wg1 (1) ts (102894) cdd (2) major-version-4 (4) minor-version-3 (3)}
WITH SUCCESSORS

OriginatingRsuContainer, OriginatingVehicleContainer
FROM CPM-OriginatingStationContainers {itu-t (0) identified-organization (4) etsi (0) itsDomain (5) wg1 (1) ts (103324) originatingStationContainers (2) major-version-1 (1) minor-version-1(1)}
WITH SUCCESSORS

SensorInformationContainer
FROM CPM-SensorInformationContainer {itu-t (0) identified-organization (4) etsi (0) itsDomain (5) wg1 (1) ts (103324) sensorInformationContainer (3) major-version-1 (1) minor-version-1(1)}
WITH SUCCESSORS

PerceptionRegionContainer
FROM CPM-PerceptionRegionContainer {itu-t (0) identified-organization (4) etsi (0) itsDomain (5) wg1 (1) ts (103324) perceptionRegionContainer (5) major-version-1 (1) minor-version-1(1)}
WITH SUCCESSORS

PerceivedObjectContainer
FROM CPM-PerceivedObjectContainer {itu-t (0) identified-organization (4) etsi (0) itsDomain (5) wg1 (1) ts (103324) perceivedObjectContainer (4) major-version-1 (1) minor-version-1(1)}
WITH SUCCESSORS

;

/**
 * This DF  represents the Collective Perception Message (CPM) and is the top level Protocol Data Unit. 
 *
 * It shall include the following components: 
 *
 * @field header: the common message header for the facilities layer message. 
 *
 * @field payload: the payload of the message. 
 *
*/
CollectivePerceptionMessage ::= SEQUENCE {
    header     ItsPduHeader (WITH COMPONENTS {... , protocolVersion (2), messageId(cpm)}),
    payload    CpmPayload
}

/**
 * This DF  represents the payload of the CPM. 
 *
 * It shall include the following components: 
 *
 * @field managementContainer: the management container. 
 *
 * @field cpmContainers: the list of CPM containers, including its container type identifier and including either one or none of originatingVehicleContainer and/or originatingRsuContainer. 
 *
*/
CpmPayload ::= SEQUENCE {
    managementContainer   ManagementContainer,
    cpmContainers         ConstraintWrappedCpmContainers,
    ...
}

/**
 * This DF  represents the management container of the CPM. 
 * The management container provides basic information about the originating ITS-S, which are not specific to a specific type of station.
 *
 * It shall include the following components: 
 *
 * @field referenceTime: the reference time for all time related information in the CPM.
 *
 * @field messageRateRange: the planned or expected range of the CPM generation rate.
 *
 * @field segmentationInfo: information regarding the message segmentation on facility layer.
 *
 * @field referencePosition: the reference position for all position related information in the CPM.
 *
*/
ManagementContainer ::= SEQUENCE {
    referenceTime      TimestampIts,
    referencePosition  ReferencePosition,
    segmentationInfo   MessageSegmentationInfo OPTIONAL,
    messageRateRange   MessageRateRange OPTIONAL,
    ...
}

/**
 * This information object class is an abstract template to instantiate containers.
 *
 * It shall include the following components: 
 *
 * @field &id: the identifier of the container type.
 *
 * @field &Type: the container content.
 *
*/

CPM-CONTAINER-ID-AND-TYPE ::= CLASS {
    &id     CpmContainerId UNIQUE,
    &Type
} WITH SYNTAX {&Type IDENTIFIED BY &id}

/**
 * This DE represents the identifier of the container type. 
 *
*/
CpmContainerId ::= INTEGER (1..16)

/**
 * These value assignements represent specific values of the container type identifier. 
*/
originatingVehicleContainer CpmContainerId ::= 1
originatingRsuContainer CpmContainerId ::= 2
sensorInformationContainer CpmContainerId ::= 3
perceptionRegionContainer CpmContainerId ::= 4
perceivedObjectContainer CpmContainerId ::= 5


/**
 * This information object set represents the association between the container type and the container content.
*/
CpmContainers CPM-CONTAINER-ID-AND-TYPE ::= {
    {OriginatingVehicleContainer IDENTIFIED BY originatingVehicleContainer} |
    {OriginatingRsuContainer IDENTIFIED BY originatingRsuContainer} |
    {SensorInformationContainer IDENTIFIED BY sensorInformationContainer} |
    {PerceptionRegionContainer IDENTIFIED BY perceptionRegionContainer} |
    {PerceivedObjectContainer IDENTIFIED BY perceivedObjectContainer},
    ...
}

/**
 * This DF represents a CPM container preceded by its type identifier and a lenght indicator.
 *
 * It shall include the following components: 
 *
 * @field containerId: the identifier of the container type.
 *
 * @field containerData: the container content consistent with the container type.
 *
*/
WrappedCpmContainer ::= SEQUENCE {
   containerId     CPM-CONTAINER-ID-AND-TYPE.&id( {CpmContainers} ),
   containerData   CPM-CONTAINER-ID-AND-TYPE.&Type( {CpmContainers}{@containerId} )
}

/**
 * This DF represents a list of CPM containers, each with their type identifier. 
*/
WrappedCpmContainers::= SEQUENCE SIZE(1..8,...) OF WrappedCpmContainer 

/**
 * This DF represents a list of CPM containers, each with their type identifier with an additional constraint. 
*/
ConstraintWrappedCpmContainers ::= WrappedCpmContainers
    ((WITH COMPONENT (WITH COMPONENTS {..., containerId (ALL EXCEPT 1)})) |
    (WITH COMPONENT (WITH COMPONENTS {..., containerId (ALL EXCEPT 2)})))

/**
 * This DF  represents the planned or expected range of the message generation rate.
 *
 * It shall include the following components: 
 *
 * @field messageRateMin: the minimum planned or expected message rate.
 *
 * @field messageRateMax: the maximum planned or expected message rate.
 *
*/
MessageRateRange::= SEQUENCE{
   messageRateMin   MessageRateHz,
   messageRateMax   MessageRateHz
}

END