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SAE J2735-Draft-Rev15 [issued: 01-30-07]
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176 -
This is an SAE Motor Vehicle Council draft document of the DSRC committee, subject to change.
TAG = STDTAGLIST.ANTILOCKBRAKESTATUS,
VALUE = <DE_ANTILOCKBRAKESTATUS DATA (2 BITS)>,
TAG = STDTAGLIST.BRAKEAPPLIEDPRESSURE,
VALUE = <DE_BRAKEAPPLIEDPRESSURE DATA (4 BITS)>,
TAG = STDTAGLIST.BRAKEAPPLIEDSTATUS,
VALUE = <DE_BRAKEAPPLIEDSTATUS DATA (4 BITS)>,
TAG = STDTAGLIST.BRAKEBOOSTAPPLIED,
VALUE = <DE_BRAKEBOOSTAPPLIED DATA (1 BYTE)>,
TAG = STDTAGLIST.OBSTACLEDISTANCE,
VALUE = <DE_OBSTACLEDISTANCE DATA (1 BYTE)>,
TAG = STDTAGLIST.STEERINGWHEELANGLECONFIDENCE,
VALUE = <DE_STEERINGWHEELANGLECONFIDENCE DATA (2 BITS)>,
TAG = STDTAGLIST.STEERINGWHEELANGLERATEOFCHANGE,
VALUE = <DE_STEERINGWHEELANGLERATEOFCHANGE DATA (1 BYTE)>,
TAG = STDTAGLIST.STEERINGWHEELANGLE,
VALUE = <DE_STEERINGWHEELANGLE DATA (1 BYTE)>
TAG = STDTAGLIST.VEHICLEHEIGHT,
VALUE = <DE_VEHICLEHIGHT DATA (1 BYTE)>
TAG = STDTAGLIST.VEHICLELENGTH,
VALUE = <DE_VEHICLELENGTH DATA (14 BITS)>
TAG = STDTAGLIST.VEHICLEMASS,
VALUE = <DE_VEHICLEMASS DATA (1 BYTE)>
TAG = STDTAGLIST.VEHICLETYPE,
VALUE = <DE_VEHICLETYPE DATA (1 BYTE)>
TAG = STDTAGLIST.VEHICLEWIDTH,
VALUE = <DE_VEHICLEWIDTH DATA (1 BYTE)>
},
-- AD HOC DATA
VALUECNT2 = 1,
ITEM2 SEQUENCE(2) OF SEQUENCE {
TAG = <AH_CAWMAP>,
DATA = <AH_CAWMAP DATA>
},
}
3.3 Message Send
This section illustrates a timeline for the MD. For this example, the following steps would be representative of
the MD behavior:
1.
The MD starts at time t by sending the Msg3Hz message.
2.
After 0.1 seconds, at time “t + 0.1”, the MD sends the Msg10Hz message.
3.
At time “t + 0.2”, the MD sends the Msg5Hz message. The Msg10Hz is not sent since it is contained
into Msg5Hz.
4.
At time “t + 0.3”, the MD sends the Msg10Hz message.
5.
At time “t + 0.4”, the MD sends the Msg3Hz message. The Msg5Hz and Msg10Hz are not sent since
they are both contained into Msg3Hz.
6.
At time “t + 0.5”, message Msg10Hz is sent.
7.
At time “t + 0.6”, message Msg5Hz is sent. At time “t + 0.7”, message Msg10Hz is sent.
8.
At time “t + 0.8”, message Msg5Hz is sent.
9.
At time “t + 0.9”, message Msg3Hz is sent.
At this point 1 second is complete and for time “t + 1.0”, the MD returns to step 1.
Consider the structure of the three different messages as shown in the previous section. Note that Msg10Hz
data is contained into Msg5Hz data, and in turn Msg5Hz data is contained into Msg3Hz data. Therefore, the