private IEnumerable <CellularTowerEvent> DetectEvent(string vehicleId, string linkId, long currentTick)
{
VehicleEvent vEvent = vehicleEvents[vehicleId];
//if the linkId is null, it means the vehicle event is pre-defined (non-vehicular event)
if (string.IsNullOrEmpty(linkId))
{
linkId = vEvent.CurLinkId;
}
else
{
vEvent.PreLinkId = vEvent.CurLinkId;
vEvent.CurLinkId = linkId;
}
//find out the active event on this vehicle
foreach (Event evt in vEvent.GetActiveEvent(currentTick))
{
//check if the event is happenning
if (evt != null)
{
///current time.
Location curLocation = null;
CellTower curCell = null;
Location preLocation = null;
CellTower preCell = null;
curLocation = cellularNetwork.FindLocationByLinkId(vEvent.CurLinkId);
curCell = cellularNetwork.FindCellTowerByLinkId(vEvent.CurLinkId);
preLocation = cellularNetwork.FindLocationByLinkId(vEvent.PreLinkId);
preCell = cellularNetwork.FindCellTowerByLinkId(vEvent.PreLinkId);
switch (evt.EventType)
{
case EventType.OnCall:
//for any oncall events, just return the location
if (curCell != null && preCell != null && !curCell.Equals(preCell))
{
yield return(new CellularTowerEvent(vehicleId, curLocation.LocationId, curCell.CellTowerId, preLocation?.LocationId, preCell?.CellTowerId, evt, currentTick));
}
break;
case EventType.PowerOn:
if (curLocation != null && curCell != null &&
preLocation != null && preCell != null &&
!curCell.Equals(preCell))
{
//for now just use vechileId to represnet IMSI
yield return(new CellularTowerEvent(vehicleId, curLocation.LocationId, curCell.CellTowerId, preLocation.LocationId, preCell.CellTowerId, evt, currentTick));
}
break;
default:
break;
}
}
}
yield return(null);
}
private CellularTowerEvent DetectEvent(string vehicleId, string linkId, long currentTick)
{
VehicleEvent vEvent = vehicleEvents[vehicleId];
//find out the active event on this vehicle
Event evt = vEvent.GetActiveEvent(currentTick);
//check if the event is happenning
if (evt != null)
{
///current time.
Location curlocation = null;
CellTower curCell = null;
switch (evt.EventType)
{
case EventType.PowerOn: //this is a LU event
curlocation = cellularNetwork.FindLocationByLinkId(linkId);
curCell = cellularNetwork.FindCellTowerByLinkId(linkId);
if (curlocation != null && curCell != null)
{
//for now just use vechileId to represnet IMSI
return(new CellularTowerEvent(vehicleId, curlocation.LocationId, curCell.CellTowerId, evt, currentTick));
}
break;
case EventType.OnCall: //this is a hand-off event
curlocation = cellularNetwork.FindLocationByLinkId(linkId);
curCell = cellularNetwork.FindCellTowerByLinkId(linkId);
if (curlocation != null && curCell != null)
{
//for now just use vechileId to represnet IMSI
return(new CellularTowerEvent(vehicleId, curlocation.LocationId, curCell.CellTowerId, evt, currentTick));
}
break;
default:
break;
}
}
return(null);
}