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SAE J2735-Draft-Rev15 [issued: 01-30-07]
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This is an SAE Motor Vehicle Council draft document of the DSRC committee, subject to change.
<xs:element name="cnt" >
<xs:simpleType>
<xs:restriction base="xs:unsignedShort">
<xs:maxInclusive value="256"/>
</xs:restriction>
</xs:simpleType>
</xs:element>
<!-- count of object defintions that follow -->
<xs:element name="objs" >
<xs:complexType>
<xs:sequence minOccurs="0" maxOccurs="256">
<xs:element name="obj" >
<xs:complexType>
<xs:choice>
<xs:element name="anchor" type="Anchor" />
<xs:element name="zoom" type="Zoom" />
<xs:element name="point" type="Point" />
<xs:element name="line" type="Line" />
<xs:element name="shape" type="Shape" />
<xs:element name="approach" type="Approach" />
<xs:element name="phase" type="Phase" />
<xs:element name="overlap" type="Overlap" />
<xs:element name="etc" type="Etc" />
</xs:choice>
</xs:complexType>
</xs:element>
<!-- a collection of basic map objects, the precise nature TBD and nesting
vs flat or linked TBD -->
<!-- a collection of basic map objects , the precise nature TBD and nesting
vs flat or linked TBD -->
</xs:sequence>
</xs:complexType>
</xs:element>
</xs:sequence>
</xs:complexType>
Remarks: Note: This message is being developed by the Map subcommittee with input from other efforts. The
primary formats of the geometry objects to be supported remain under discussion, but will likely allow some form
of describing the approaches and possible phases/overlaps in the intersection signaling system.
5.7 Message: MSG_NMEA_Corrections
Use: The NMEA_Corrections message is used to encapsulate NMEA 183 style differential corrections for GPS
radio navigation signals as defined by the NMEA (National Marine Electronics Association) committee in its
Protocol 0183 standard. Here, in the work of DSRC, these messages are "wrapped" for transport on the DSRC
media, and then can be re-constructed back into the final expected formats defined by the NMEA standard and
used directly by GPS positioning systems to increase the absolute and relative accuracy estimates produced.
ASN.1 Representation:
NMEA-Corrections ::= SEQUENCE {
rev NMEA-Revision,
-- the specific edition of the standard
-- that is being sent, normally 2.0
msg NMEA-MsgType,
-- the message and sub-message type, as
-- defined in the revision being used
-- NOTE as the message type is also in the payload,
-- we may want to remove it from here, not sure right now. DCK
wdCount INTEGER (0..1023),
-- a count of bytes to follow
payload OCTET STRING (SIZE(0..1023)),
...