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SAE J2735-Draft-Rev28 [issued: 11-10-08]
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166 -
This is an SAE Motor Vehicle Council draft document of the DSRC committee, subject to change.
<xs:enumeration value="other"/>
<xs:enumeration value="notActive"/>
<xs:enumeration value="notActiveWithCall"/>
<xs:enumeration value="entryStarted"/>
<xs:enumeration value="trackService"/>
<xs:enumeration value="dwell"/>
<xs:enumeration value="linkActive"/>
<xs:enumeration value="existStarted"/>
<xs:enumeration value="maximumPresence"/>
<xs:enumeration value="ackowledgedButOverridden"/>
</xs:restriction>
</xs:simpleType >
<xs:simpleType>
<xs:restriction base="local:PreemptState" />
</xs:simpleType>
</xs:union>
</xs:simpleType>
In addition, this item may be used by data structures in other ITS standards.
Remarks: Used in the SignalState definition (a complex octet encoding).
7.104 Data Element: DE_Priority
Use: A priority for the alert message, giving urgency of this message. A relative degree of merit compared
with other similar messages for this type (not other message being sent by the device, nor a priority of
display urgency at the receiver).
At this time, the lower five bits are reserved and shall be set to zero. This effectively reduces the number of
priority levels to eight. The value of all zeros shall be used for "routine" messages such as roadside signage
where not displaying the message to the drive is of only modest impact. The value 111xxxxx shall be the
highest level of priority and shall be consider the most important level. When choices of display order or
transmission order are considered, messages with this level of priority shall be given precedence. The
remaining 6 levels shall be used as determined by local conventions.
ASN.1 Representation:
Priority ::= OCTET STRING (SIZE(1))
-- Follow definition notes on setting these bits
XML Representation:
<xs:complexType name="Priority" >
<xs:simpleContent>
<xs:annotation>
<xs:documentation>
Follow definition notes on setting these bits
</xs:documentation>
</xs:annotation>
<xs:extension base="Priority-string" >
<xs:attribute name="EncodingType" use="required">
<xs:simpleType>
<xs:restriction base="xs:NMTOKEN">
<xs:enumeration value="base64Binary"/>
</xs:restriction>
</xs:simpleType>
</xs:attribute>
</xs:extension>
</xs:simpleContent>
</xs:complexType>
<xs:simpleType name="Priority-string">
<xs:restriction base="xs:base64Binary">
<xs:length value="2"/>
</xs:restriction>
</xs:simpleType >