public GroupHub(int node)
 {
     DownSpeed = 4000;               // Mbps
     UpSpeed   = 4000;               // Mbps
     numTransmissionRequests = 0;
     downloadRequest         = false;
     NodeNum = node;
     for (int i = 0; i < GV.numAPsperGroup; i++)
     {
         AccessPoints[i] = new AccessPoint(NodeNum * GV.numAPsperGroup + i, this);
     }
 }         // GroupHub
        //private TransmissionPacket uploadPacket = null;
        //private TransmissionPacket downloadPacket = null;


        public Vehicle(int space, AccessPoint AP)
        {
            LocalAP = AP;
//			GV.GlobalComms.Rows[space]["Status"] = GV.VMStatus.justArrived;
        }