private static void UpdateNearestCell(ISimUser user, ref ISimCellBase nearestCell, ref float minDistance, ISimCellBase cellBase)
{
GeoXYPoint trancXY = new GeoXYPoint(cellBase.X, cellBase.Y);
GeoXYPoint userXY = new GeoXYPoint(user.X, user.Y);
GeoXYLine trancToUser = new GeoXYLine(trancXY, userXY);
FindNearestCell(ref nearestCell, ref minDistance, cellBase, trancToUser);
}
private static void CalcNearestCell(ISimUser user, ref ISimCellBase nearestCell, ref float minDistance, ISimCellBase cellBase)
{
bool isUserNear = IsUserNear(user, cellBase);
if (!isUserNear)
{
UpdateNearestCell(user, ref nearestCell, ref minDistance, cellBase);
}
}
public float GetFastFadingdB(ISimCellBase carrier, ISimUser user, LinkType type)
{
float speed = user.TrafficUser.Mobility.MeanSpeed;
float frequency = (float)(carrier.Cell.FreqBand.DLFrequency * 1e6);
//ChannelTypeManage CTManage = new ChannelTypeManage();
//CTManage.GetChannelTypeInfo();
ChannelType CT = m_CTManage.SpeedChannelDic[speed];
ChannelModel CM = new ChannelModel(CT.ChannelPath, speed, frequency);
CalcFastFading calc = new CalcFastFading(10);
return calc.GetFastFadingdB(CM, m_TimeSpan);
}
/// <summary>
/// 计算ISimCellBase集合中距离User最近的一个
/// </summary>
/// <param name="user">用户</param>
/// <param name="trans">Tranceiver集合</param>
/// <param name="nearestTran">最近Tranceiver</param>
public static ISimCellBase CalcUserNearestOneNetTran(ISimUser user, List<ISimCellBase> cells)
{
ISimCellBase nearestCell = null;
float minDistance = float.MaxValue;
foreach (ISimCellBase cellBase in cells)
{
CalcNearestCell(user, ref nearestCell, ref minDistance, cellBase);
//if (IsUserNear(user, cellBase))
//{
// continue;
//}
}
return CheckNearestCell(cells, nearestCell);
}
private static bool IsUserNear(ISimUser user, ISimCellBase cellBase)
{
bool isUserXNear = Math.Abs(user.X - cellBase.X) > GetCalcRadius(cellBase);
bool isUserYNear = Math.Abs(user.Y - cellBase.Y) > GetCalcRadius(cellBase);
return (isUserXNear || isUserYNear);
}
public float GetFastFadingdB(ISimCellBase cell, ISimUser user, LinkType type)
{
return 110;
}
