LibItsGeoNetworking_Functions.ttcn

/**
 *  @author     ETSI / STF405
 *  @version    $URL$
 *              $Id$
 *  @desc       Module containing functions for GeoNetworking
 *
 */
module LibItsGeoNetworking_Functions {
    
    // Libcommon
    import from LibCommon_BasicTypesAndValues all;
    import from LibCommon_VerdictControl {type FncRetCode;}
    import from LibCommon_Sync all;
    import from LibCommon_Time all;
    
    // LibIts
    import from LibIts_TestSystem all;
    import from LibIts_Interface all; 
    import from LibItsCommon_Functions all;
    import from LibItsGeoNetworking_TypesAndValues all;
    import from LibItsGeoNetworking_Templates all;
    import from LibItsGeoNetworking_Pixits all;
    import from LibItsGeoNetworking_Pics all;
    import from LibItsExternal_TypesAndValues {type MacAddress};
    
    group geoConfigurationFunctions {
        
        /**
         * @desc This configuration features:
         *       - one ITS node (IUT)
         *       - two ITS nodes (nodeA, nodeB)
         *       - Area1 which only includes NodeB and IUT
         *       - Area2 which only includes NodeB 
         *         NodeB being close to the area center    
         */
        function f_cf01Up() runs on ItsNt {

            // Variables
            var PositionTable v_positionTable := {};
            var GeoAreaTable v_areaTable := {};
            var LongPosVector v_longPosVectorIut, v_longPosVectorNodeA, v_longPosVectorNodeB, v_longPosVectorNodeD;
            
            // Map
            map(self:acPort, system:acPort);
            map(self:utPort, system:utPort);
            map(self:geoNetworkingPort, system:geoNetworkingPort);
                        
            // Connect
            f_connect4SelfOrClientSync();
            activate(a_cf01Down());            
            
            //Initialze the IUT
            f_initialState();
            
            //Get positions
            v_longPosVectorIut := f_getIutLongPosVector();
            v_longPosVectorNodeA := f_computePosition(v_longPosVectorIut, c_longitudeFactorNodeA, c_latitudeFactorNodeA);
            v_longPosVectorNodeB := f_computePosition(v_longPosVectorIut, c_longitudeFactorNodeB, c_latitudeFactorNodeB);
            v_longPosVectorNodeD := f_computePosition(v_longPosVectorIut, c_longitudeFactorNodeD, c_latitudeFactorNodeD);
            
            // Propagate GN addresses
            v_longPosVectorNodeA.gnAddr := f_getTsGnLocalAddress(c_compNodeA);
            v_longPosVectorNodeB.gnAddr := f_getTsGnLocalAddress(c_compNodeB);
            
            // Position table            
            f_addPosition(v_positionTable, c_compIut, v_longPosVectorIut);
            f_addPosition(v_positionTable, c_compNodeA, v_longPosVectorNodeA);
            f_addPosition(v_positionTable, c_compNodeB, v_longPosVectorNodeB);
        
            // Area table
            f_addArea(v_areaTable, c_area1, 
                f_computeCircularArea(v_longPosVectorNodeD, float2int(1.1 * f_distance(v_longPosVectorNodeB, v_longPosVectorNodeD))));
            f_addArea(v_areaTable, c_area2, 
                f_computeCircularArea(v_longPosVectorNodeB, float2int(1.1 * f_distance(v_longPosVectorNodeB, v_longPosVectorNodeD))));
        
            f_initialiseComponent(v_positionTable, v_areaTable, c_compNodeB);

        } // end f_cf01Up

        /**
         * @desc Deletes configuration cf01
         */
        function f_cf01Down() runs on ItsNt {

            // Unmap
            unmap(self:acPort, system:acPort);
            unmap(self:utPort, system:utPort);
            unmap(self:geoNetworkingPort, system:geoNetworkingPort);
            
            // Disconnect
            f_disconnect4SelfOrClientSync();
            
        } // end f_cf01Down
        
        /**
         * @desc This configuration features:
         *       - one ITS node (IUT)
         *       - one ITS node (NodeB)
         *       - one ITS node (NodeD)
         *       - Area1 which only includes NodeB, NodeD and IUT
         *       - Area2 which only includes NodeB and NodeD 
         *         NodeB being close to the area center          
         *         
         * @param p_nodeB   Component for NodeB
         * @param p_nodeD   Component for NodeD
         */
        function f_cf02Up(out ItsNt p_nodeB, out ItsNt p_nodeD) runs on ItsMtc {
            
            // Variables
            var PositionTable v_positionTable := {};
            var GeoAreaTable v_areaTable := {};
            var LongPosVector v_longPosVectorIut, v_longPosVectorNodeB, v_longPosVectorNodeC, v_longPosVectorNodeD;
            
            // Create
            p_nodeB := ItsNt.create(c_compNodeB) alive;
            p_nodeD := ItsNt.create(c_compNodeD) alive;

            // Map    
            map(self:acPort, system:acPort);
            map(self:utPort, system:utPort); 
            map(p_nodeB:acPort, system:acPort);
            map(p_nodeD:acPort, system:acPort);
            map(p_nodeB:utPort, system:utPort);
            map(p_nodeD:utPort, system:utPort);
            map(p_nodeB:geoNetworkingPort, system:geoNetworkingPort);
            map(p_nodeD:geoNetworkingPort, system:geoNetworkingPort);
            
            // Connect            
            connect(p_nodeB:syncPort, self:syncPort);
            connect(p_nodeD:syncPort, self:syncPort);
			connect(self:syncPort, mtc:syncPort);
			activate(a_cf02Down(p_nodeB, p_nodeD));
        
            //Initialze the IUT
            f_initialState();
            
            //Get positions
            v_longPosVectorIut := f_getIutLongPosVector();
            v_longPosVectorNodeB := f_computePosition(v_longPosVectorIut, c_longitudeFactorNodeB, c_latitudeFactorNodeB);
            v_longPosVectorNodeD := f_computePosition(v_longPosVectorIut, c_longitudeFactorNodeD, c_latitudeFactorNodeD);
            
            // Propagate GN addresses
            v_longPosVectorNodeB.gnAddr := f_getTsGnLocalAddress(c_compNodeB);
            v_longPosVectorNodeD.gnAddr := f_getTsGnLocalAddress(c_compNodeD);
            
            // Position table
            f_addPosition(v_positionTable, c_compIut, v_longPosVectorIut);
            f_addPosition(v_positionTable, c_compNodeB, v_longPosVectorNodeB);
            f_addPosition(v_positionTable, c_compNodeD, v_longPosVectorNodeD);

            // Area table
            f_addArea(v_areaTable, c_area1, 
                f_computeCircularArea(v_longPosVectorNodeD, float2int(1.1 * f_distance(v_longPosVectorNodeB, v_longPosVectorNodeD))));
            f_addArea(v_areaTable, c_area2, 
                f_computeCircularArea(v_longPosVectorNodeB, float2int(1.1 * f_distance(v_longPosVectorNodeB, v_longPosVectorNodeD))));
            
            p_nodeB.start(f_initialiseComponent(v_positionTable, v_areaTable, c_compNodeB));
            p_nodeD.start(f_initialiseComponent(v_positionTable, v_areaTable, c_compNodeD));
            p_nodeB.done;
            p_nodeD.done;
        
        } // end f_cf02Up

        /**
         * @desc Deletes configuration cf02
         * @param p_nodeB   Component for NodeB
         * @param p_nodeD   Component for NodeD
         */
        function f_cf02Down(in ItsNt p_nodeB, in ItsNt p_nodeD) runs on ItsMtc {
            
            // Unmap
			unmap(self:acPort, system:acPort);
            unmap(self:utPort, system:utPort); 
            unmap(p_nodeB:acPort, system:acPort);
            unmap(p_nodeD:acPort, system:acPort);
            unmap(p_nodeB:utPort, system:utPort);
            unmap(p_nodeD:utPort, system:utPort);
            unmap(p_nodeB:geoNetworkingPort, system:geoNetworkingPort);
            unmap(p_nodeD:geoNetworkingPort, system:geoNetworkingPort);
            
            // Disconnect
            disconnect(p_nodeB:syncPort, self:syncPort);
            disconnect(p_nodeD:syncPort, self:syncPort);
			disconnect(self:syncPort, mtc:syncPort);
        
        } // end f_cf02Down
        
        /**
         * @desc This configuration features:
         *       - one ITS node (IUT)
         *       - one ITS node (NodeA)
         *       - one ITS node in direction of NodeA (NodeB)
         *       - one ITS node not in direction of NodeA (NodeC)       
         *       - Area1 which only includes NodeB and IUT
         *       - Area2 which only includes NodeB 
         *         NodeB being close to the area center   
         * @param p_nodeB   Component for NodeB
         * @param p_nodeC   Component for NodeC
         */
        function f_cf03Up(out ItsNt p_nodeB, out ItsNt p_nodeC) runs on ItsMtc {

            // Variables
            var PositionTable v_positionTable := {};
            var GeoAreaTable v_areaTable := {};
            var LongPosVector v_longPosVectorIut, v_longPosVectorNodeA, v_longPosVectorNodeB, v_longPosVectorNodeC, v_longPosVectorNodeD;
            
            // Create
            p_nodeB := ItsNt.create(c_compNodeB) alive;
            p_nodeC := ItsNt.create(c_compNodeC) alive;

            // Map
			map(self:acPort, system:acPort);
            map(self:utPort, system:utPort); 
            map(p_nodeB:acPort, system:acPort);
            map(p_nodeC:acPort, system:acPort);
            map(p_nodeB:utPort, system:utPort);
            map(p_nodeC:utPort, system:utPort);
            map(p_nodeB:geoNetworkingPort, system:geoNetworkingPort);
            map(p_nodeC:geoNetworkingPort, system:geoNetworkingPort);
            
            // Connect
            connect(p_nodeB:syncPort, self:syncPort);
            connect(p_nodeC:syncPort, self:syncPort);
			connect(self:syncPort, mtc:syncPort);
			activate(a_cf03Down(p_nodeB, p_nodeC));

            //Initialze the IUT
            f_initialState();
            
            //Get positions
            v_longPosVectorIut := f_getIutLongPosVector();
            v_longPosVectorNodeA := f_computePosition(v_longPosVectorIut, c_longitudeFactorNodeA, c_latitudeFactorNodeA);
            v_longPosVectorNodeB := f_computePosition(v_longPosVectorIut, c_longitudeFactorNodeB, c_latitudeFactorNodeB);
            v_longPosVectorNodeC := f_computePosition(v_longPosVectorIut, c_longitudeFactorNodeC, c_latitudeFactorNodeC);
            v_longPosVectorNodeD := f_computePosition(v_longPosVectorIut, c_longitudeFactorNodeD, c_latitudeFactorNodeD);
            
            // Propagate GN addresses
            v_longPosVectorNodeA.gnAddr := f_getTsGnLocalAddress(c_compNodeA);
            v_longPosVectorNodeB.gnAddr := f_getTsGnLocalAddress(c_compNodeB);
            v_longPosVectorNodeC.gnAddr := f_getTsGnLocalAddress(c_compNodeC);
            
            // Position table
            f_addPosition(v_positionTable, c_compIut, v_longPosVectorIut);
            f_addPosition(v_positionTable, c_compNodeA, v_longPosVectorNodeA);
            f_addPosition(v_positionTable, c_compNodeB, v_longPosVectorNodeB);
            f_addPosition(v_positionTable, c_compNodeC, v_longPosVectorNodeC);
            
            // Area table
            f_addArea(v_areaTable, c_area1, 
                f_computeCircularArea(v_longPosVectorNodeD, float2int(1.1 * f_distance(v_longPosVectorNodeB, v_longPosVectorNodeD))));
            f_addArea(v_areaTable, c_area2, 
                f_computeCircularArea(v_longPosVectorNodeB, float2int(1.1 * f_distance(v_longPosVectorNodeB, v_longPosVectorNodeD))));
            
            p_nodeB.start(f_initialiseComponent(v_positionTable, v_areaTable, c_compNodeB));
            p_nodeC.start(f_initialiseComponent(v_positionTable, v_areaTable, c_compNodeC));
            p_nodeB.done;
            p_nodeC.done;
                    
        } // end f_cf03Up

        /**
         * @desc Deletes configuration cf03
         * @param p_nodeB   Component for NodeB
         * @param p_nodeC   Component for NodeC
         */
        function f_cf03Down(in ItsNt p_nodeB, in ItsNt p_nodeC) runs on ItsMtc {
            
            // Unmap
			unmap(self:acPort, system:acPort);
            unmap(self:utPort, system:utPort);
            unmap(p_nodeB:acPort, system:acPort);
            unmap(p_nodeC:acPort, system:acPort);
            unmap(p_nodeB:utPort, system:utPort);
            unmap(p_nodeC:utPort, system:utPort);
            unmap(p_nodeB:geoNetworkingPort, system:geoNetworkingPort);
            unmap(p_nodeC:geoNetworkingPort, system:geoNetworkingPort);
            
            // Disconnect
            disconnect(p_nodeB:syncPort, self:syncPort);
            disconnect(p_nodeC:syncPort, self:syncPort);
			disconnect(self:syncPort, mtc:syncPort);
        
        } // end f_cf03Down

        /**
         * @desc This configuration features:
         *       - one ITS node (IUT)
         *       - one ITS node (NodeA)
         *       - one ITS node in direction of NodeA and having 
         *         shortest distance to NodeA (NodeB)
         *       - one ITS node in direction of NodeA (NodeD)
         *       - one ITS node not in direction of NodeA (NodeC)
         *       - Area1 which only includes NodeB, NodeD and IUT
         *       - Area2 which only includes NodeA, NodeB and NodeD 
         *         NodeB being close to the area center 
         * @param p_nodeB   Component for NodeB
         * @param p_nodeC   Component for NodeC
         * @param p_nodeD   Component for NodeD            
         */
        function f_cf04Up(out ItsNt p_nodeB, out ItsNt p_nodeC, out ItsNt p_nodeD) runs on ItsMtc {

            // Variables
            var PositionTable v_positionTable := {};
            var GeoAreaTable v_areaTable := {};
            var LongPosVector v_longPosVectorIut, v_longPosVectorNodeA, v_longPosVectorNodeB, v_longPosVectorNodeC, v_longPosVectorNodeD;
            
            // Create
            p_nodeB := ItsNt.create(c_compNodeB) alive;
            p_nodeC := ItsNt.create(c_compNodeC) alive;
            p_nodeD := ItsNt.create(c_compNodeD) alive;

            // Map
			map(self:acPort, system:acPort);
            map(self:utPort, system:utPort); 
            map(p_nodeB:acPort, system:acPort);
            map(p_nodeC:acPort, system:acPort);
            map(p_nodeD:acPort, system:acPort);
            map(p_nodeB:utPort, system:utPort);
            map(p_nodeC:utPort, system:utPort);
            map(p_nodeD:utPort, system:utPort);
            map(p_nodeB:geoNetworkingPort, system:geoNetworkingPort);
            map(p_nodeC:geoNetworkingPort, system:geoNetworkingPort);
            map(p_nodeD:geoNetworkingPort, system:geoNetworkingPort);
            
            // Connect
            connect(p_nodeB:syncPort, self:syncPort);
            connect(p_nodeC:syncPort, self:syncPort);
            connect(p_nodeD:syncPort, self:syncPort);
			connect(self:syncPort, mtc:syncPort);
			activate(a_cf04Down(p_nodeB, p_nodeC, p_nodeD));
            
            //Initialze the IUT
            f_initialState();
            
            //Get positions
            v_longPosVectorIut := f_getIutLongPosVector();
            v_longPosVectorNodeA := f_computePosition(v_longPosVectorIut, c_longitudeFactorNodeA, c_latitudeFactorNodeA);
            v_longPosVectorNodeB := f_computePosition(v_longPosVectorIut, c_longitudeFactorNodeB, c_latitudeFactorNodeB);
            v_longPosVectorNodeC := f_computePosition(v_longPosVectorIut, c_longitudeFactorNodeC, c_latitudeFactorNodeC);
            v_longPosVectorNodeD := f_computePosition(v_longPosVectorIut, c_longitudeFactorNodeD, c_latitudeFactorNodeD);
            
            // Propagate GN addresses
            v_longPosVectorNodeA.gnAddr := f_getTsGnLocalAddress(c_compNodeA);
            v_longPosVectorNodeB.gnAddr := f_getTsGnLocalAddress(c_compNodeB);
            v_longPosVectorNodeC.gnAddr := f_getTsGnLocalAddress(c_compNodeC);
            v_longPosVectorNodeD.gnAddr := f_getTsGnLocalAddress(c_compNodeD);
            
            // Position table
            f_addPosition(v_positionTable, c_compIut, v_longPosVectorIut);
            f_addPosition(v_positionTable, c_compNodeA, v_longPosVectorNodeA);
            f_addPosition(v_positionTable, c_compNodeB, v_longPosVectorNodeB);
            f_addPosition(v_positionTable, c_compNodeC, v_longPosVectorNodeC);
            f_addPosition(v_positionTable, c_compNodeD, v_longPosVectorNodeD);

            // Area table
            f_addArea(v_areaTable, c_area1, 
                f_computeCircularArea(v_longPosVectorNodeD, float2int(1.1 * f_distance(v_longPosVectorNodeB, v_longPosVectorNodeD))));
            f_addArea(v_areaTable, c_area2, 
                f_computeCircularArea(v_longPosVectorNodeB, float2int(1.1 * f_distance(v_longPosVectorNodeB, v_longPosVectorNodeD))));
                            
            p_nodeB.start(f_initialiseComponent(v_positionTable, v_areaTable, c_compNodeB));
            p_nodeC.start(f_initialiseComponent(v_positionTable, v_areaTable, c_compNodeC));
            p_nodeD.start(f_initialiseComponent(v_positionTable, v_areaTable, c_compNodeD));
            p_nodeB.done;
            p_nodeC.done;
            p_nodeD.done;
                    
        } // end f_cf04Up

        /**
         * @desc Deletes configuration cf04
         * @param p_nodeB   Component for NodeB
         * @param p_nodeC   Component for NodeC
         * @param p_nodeD   Component for NodeD            
         */
        function f_cf04Down(in ItsNt p_nodeB, in ItsNt p_nodeC, in ItsNt p_nodeD) runs on ItsMtc {
            
            // Unmap
			unmap(self:acPort, system:acPort);
            unmap(self:utPort, system:utPort);
            unmap(p_nodeB:acPort, system:acPort);
            unmap(p_nodeC:acPort, system:acPort);
            unmap(p_nodeD:acPort, system:acPort);
            unmap(p_nodeB:utPort, system:utPort);
            unmap(p_nodeC:utPort, system:utPort);
            unmap(p_nodeD:utPort, system:utPort);
            unmap(p_nodeB:geoNetworkingPort, system:geoNetworkingPort);
            unmap(p_nodeC:geoNetworkingPort, system:geoNetworkingPort);
            unmap(p_nodeD:geoNetworkingPort, system:geoNetworkingPort);
            
            // Disonnect
            disconnect(p_nodeB:syncPort, self:syncPort);
            disconnect(p_nodeC:syncPort, self:syncPort);
            disconnect(p_nodeD:syncPort, self:syncPort);
			disconnect(self:syncPort, mtc:syncPort);
        
        } // end f_cf04Down
        
        /**
         * @desc    Behavior function for initializing component's variables and tables
         * @param   p_positionTable Table containing position vectors of all nodes
         * @param   p_areaTable     Table containing all defined geoAreas
         * @param   p_componentName Name of the component
         */
        function f_initialiseComponent(
            in PositionTable p_positionTable,
            in GeoAreaTable p_areaTable,
            in charstring p_componentName) 
        runs on ItsNt {
            
            vc_positionTable := p_positionTable;
            vc_areaTable := p_areaTable;
            vc_componentName := p_componentName; 
            
        } // end f_initialiseComponent
        
        /**
         * @desc    Makes the simulated ITS node behave as a neighbour of IUT 
         */
        function f_startBeingNeighbour() runs on ItsNt {
            
            vc_neighbourDefault := activate(a_neighbourDefault());
            f_acTriggerEvent(m_startBeaconing(m_beaconHeader(f_getPosition(vc_componentName)).beaconHeader));
            f_sleepIgnoreDef(1.0);
        } // end f_startBeingNeighbour

        /**
         * @desc    Makes the simulated ITS node behave as not being a neighbour of IUT 
         */        
        function f_stopBeingNeighbour() runs on ItsNt  {
            
            f_acTriggerEvent(m_stopBeaconing);
            deactivate(vc_neighbourDefault); 
            
        } // end f_stopBeingNeighbour
        
    } // end geoConfigurationFunctions
    
    group geoPositionFunctions {
        
        /**
         * @desc    Add a position vector in position table
         * @param   p_positionTable Position table to be updated
         * @param   p_positionKey   Reference key of the added position vector
         * @param   p_positionValue Added position vector
         */
        function f_addPosition(
            inout PositionTable p_positionTable,
            in charstring p_positionKey,
            in LongPosVector p_positionValue
        ) {
            
            p_positionTable[lengthof(p_positionTable)] := {
                key := p_positionKey,
                position := p_positionValue
            };
        }
        
        /**
         * @desc    Get the position vector corresponding to a key   
         * @param   p_positionKey   Reference key of the searched position vector
         * @return  LongPosVector - The serached position vector
         */
        function f_getPosition(
            in charstring p_positionKey
        ) runs on ItsNt 
        return LongPosVector {
            
            var LongPosVector v_return;
            var integer i := 0;
            
            for (i:=0; i<lengthof(vc_positionTable); i:=i+1) {
                if (vc_positionTable[i].key == p_positionKey) {
                    v_return := vc_positionTable[i].position;
                }
            }
            
            if(v_return.timestamp == 0) {
            	v_return.timestamp := f_computeGnTimestamp();
            }
            return v_return;
        }
        
        /**
         * @desc    Compute a position based on reference point and distance factors
         * @param   p_refPosition       Reference point
         * @param   p_longitudeFactor   Number of PX_DISTANCE_UNIT applied for computing longitude   
         * @param   p_latitudeFactor    Number of PX_DISTANCE_UNIT applied for computing latitude
         * @return  LongPosVector - Computed position
         * @see     PX_DISTANCE_UNIT
         */
        function f_computePosition(
            in LongPosVector p_refPosition, 
            in integer p_longitudeFactor, 
            in integer p_latitudeFactor
        ) return LongPosVector {
        
            var LongPosVector v_return := p_refPosition;
            
            v_return.latitude := v_return.latitude + p_latitudeFactor * PX_DISTANCE_UNIT;
            v_return.longitude := v_return.longitude + p_longitudeFactor * PX_DISTANCE_UNIT;
            v_return.timestamp := f_computeGnTimestamp();

            return v_return;
        }
        
        /**
         * @desc    Add a geoArea in geoArea table
         * @param   p_geoAreaTable  GeoArea table to be updated
         * @param   p_areaKey       Reference key of the added geoArea
         * @param   p_geoArea       Added geoArea
         */
        function f_addArea(
            inout GeoAreaTable p_geoAreaTable,
            in charstring p_areaKey,
            in GeoArea p_geoArea
        ) {
            p_geoAreaTable[lengthof(p_geoAreaTable)] := {
                key := p_areaKey,
                geoArea := p_geoArea
            };
        }

        /**
         * @desc    Get the geoArea corresponding to a key   
         * @param   p_areaName   Reference key of the searched geoArea
         * @return  GeoArea - The serached geoArea
         */        
        function f_getArea(
            in charstring p_areaName
        ) runs on ItsNt 
        return GeoArea {
            var GeoArea v_return;
            var integer i := 0;
            
            for (i:=0; i<lengthof(vc_areaTable); i:=i+1) {
                if (vc_areaTable[i].key == p_areaName) {
                    v_return := vc_areaTable[i].geoArea;
                }
            }
            
            return v_return;
        }
        
        /**
         * @desc    Get the geoBroadcastArea corresponding to a key   
         * @param   p_areaName   Reference key of the searched geoBroadcastArea
         * @return  GeoBroadcastArea - The serached geoBroadcastArea
         */   
        function f_getGeoBroadcastArea(in charstring p_areaName) runs on ItsNt 
        return GeoBroadcastArea {         
            return f_geoArea2GeoBroadcastArea(f_getArea(p_areaName));
        }
        
        /**
         * @desc    Get the GeoAnycastArea corresponding to a key   
         * @param   p_areaName   Reference key of the searched GeoAnycastArea
         * @return  GeoAnycastArea - The serached GeoAnycastArea
         */           
        function f_getGeoAnycastArea(in charstring p_areaName) runs on ItsNt 
        return GeoAnycastArea {
            return f_geoArea2GeoAnycastArea(f_getArea(p_areaName));
        }
        
        /**
         * @desc    Convert GeoArea type to GeoBroadcastArea
         * @param   p_area  GeoArea to be converted
         * @return  GeoBroadcastArea
         */
        function f_geoArea2GeoBroadcastArea(GeoArea p_area) 
        return GeoBroadcastArea {
            var GeoBroadcastArea v_broadcastArea;
            
            if (p_area.shape == e_geoCircle) {
                v_broadcastArea.geoBroadcastSubType := e_geoBroadcastCircle;
            }
            else if (p_area.shape == e_geoRect) {
                v_broadcastArea.geoBroadcastSubType := e_geoBroadcastRect;
            }
            else if (p_area.shape == e_geoElip) {
                v_broadcastArea.geoBroadcastSubType := e_geoBroadcastElip;
            }
            else {
                v_broadcastArea.geoBroadcastSubType := e_reserved;
            }
            
            v_broadcastArea.geoBroadcastArea := p_area.area;
            
            return v_broadcastArea;
        }

        /**
         * @desc    Convert GeoArea type to GeoAnycastArea
         * @param   p_area  GeoArea to be converted
         * @return  GeoAnycastArea
         */        
        function f_geoArea2GeoAnycastArea(GeoArea p_area) 
        return GeoAnycastArea {
            var GeoAnycastArea v_anycastArea;
            
            if (p_area.shape == e_geoCircle) {
                v_anycastArea.geoAnycastSubType := e_geoAnycastCircle;
            }
            else if (p_area.shape == e_geoRect) {
                v_anycastArea.geoAnycastSubType := e_geoAnycastRect;
            }
            else if (p_area.shape == e_geoElip) {
                v_anycastArea.geoAnycastSubType := e_geoAnycastElip;
            }
            else {
                v_anycastArea.geoAnycastSubType := e_reserved;
            }
            
            v_anycastArea.geoAnycastArea := p_area.area;
            
            return v_anycastArea;
        }
        
        /**
         * @desc    Compute a square geoArea
         * @param   p_centerLongPosVector   Center point of the square area
         * @param   p_distanceA             Width of the square area in meters
         * @return  GeoArea - Computed geoArea
         */
        function f_computeSquareArea(
            in LongPosVector p_centerLongPosVector, 
            in UInt16 p_distanceA
        ) return GeoArea {
                
            var GeoArea v_geoArea;
            
            v_geoArea := {
                shape := e_geoRect,
                area := {
                    geoAreaPosLatitude := p_centerLongPosVector.latitude,
                    geoAreaPosLongitude := p_centerLongPosVector.longitude,
                    distanceA := p_distanceA,
                    distanceB := p_distanceA,
                    angle := 0 
                }
            }
            
            return v_geoArea;   
        }
        
        /**
         * @desc    Compute a circular geoArea
         * @param   p_centerLongPosVector   Center point of the square area
         * @param   p_distanceA             Radius of the square area in meters
         * @return  GeoArea - Computed geoArea
         */
        function f_computeCircularArea(
            in LongPosVector p_centerLongPosVector, 
            in UInt16 p_distanceA
        ) return GeoArea {
                
            var GeoArea v_geoArea;
            
            v_geoArea := {
                shape := e_geoCircle,
                area := {
                    geoAreaPosLatitude := p_centerLongPosVector.latitude,
                    geoAreaPosLongitude := p_centerLongPosVector.longitude,
                    distanceA := p_distanceA,
                    distanceB := 0,
                    angle := 0 
                }
            }
            
            return v_geoArea;   
        }        
        
        /**
         * @desc    Compute distance between two points
         * @param   p_pointA    First point
         * @param   p_pointB    Second point
         * @return  Computed distance in meters
         * @see     fx_computeDistance
         */
        function f_distance(
            in LongPosVector p_pointA,
            in LongPosVector p_pointB
        ) return float {
         
            log("*** f_distance: INFO: calling fx_computeDistance() ***");
            return fx_computeDistance(p_pointA.latitude, p_pointA.longitude, p_pointB.latitude, p_pointB.longitude);   
        }
        
    } // end geoPositionFunctions    
    
    group geoAltsteps {
        
        /**
         * @desc The base default.
         */
        altstep a_default() runs on ItsNt {
            
            var LongPosVector v_longPosVectorIut;
            
            [] a_receiveLsRequest(
                ?, ?, v_longPosVectorIut
               ) { 
                repeat;
            }
            [] geoNetworkingPort.receive {
                log("*** a_default: ERROR: Received an unexpected message ***");
                f_selfOrClientSyncAndVerdict("error", e_error);
            }
            [] tc_wait.timeout {
                log("*** a_default: ERROR: Timeout while awaiting reaction of the IUT prior to Upper Tester action ***");
                f_selfOrClientSyncAndVerdict("error", e_timeout);
            }
            [] tc_ac.timeout {
                log("*** a_default: ERROR: Timeout while awaiting the reception of a message ***");
                f_selfOrClientSyncAndVerdict("error", e_timeout);
            }
            [] a_shutdown() {
                log("*** a_default: INFO: TEST COMPONENT NOW STOPPING ITSELF! ***");
                stop;                 
            }
        }        

        /**
         * @desc    Neighbour default altstep (answers to LS Requests) 
         */
        altstep a_neighbourDefault() runs on ItsNt {
      
            [] a_receiveLsRequestAndReply(
                ?, f_getPosition(vc_componentName).gnAddr.mid, 
                f_getPosition(vc_componentName), 
                f_getPosition(vc_componentName)
               ) { 
                repeat;
            }    
            [vc_componentName == c_compNodeB] a_receiveLsRequestAndReply(
                ?, f_getPosition(c_compNodeA).gnAddr.mid, 
                f_getPosition(c_compNodeA), 
                f_getPosition(vc_componentName)
               ) { 
                repeat;
            }          
            [] a_default() {
            	                
            }
        }

		/**
		 * @desc Default handling cf01 de-initialisation.
		 */
		altstep a_cf01Down() runs on ItsNt {
			[] a_shutdown() {
				f_poDefault();
				f_cf01Down();
				log("*** a_cf01Down: INFO: TEST COMPONENT NOW STOPPING ITSELF! ***");
				stop;   
			}
		}
		
		/**
		 * @desc Default handling cf02 de-initialisation.
		 */
		altstep a_cf02Down(in ItsNt p_nodeB, in ItsNt p_nodeD) runs on ItsMtc {
			[] a_shutdown() {
				f_cf02Down(p_nodeB, p_nodeD);
				log("*** a_cf02Down: INFO: TEST COMPONENT NOW STOPPING ITSELF! ***");
				stop;   
			}
		}
		
		/**
		 * @desc Default handling cf03 de-initialisation.
		 */
		altstep a_cf03Down(in ItsNt p_nodeB, in ItsNt p_nodeC) runs on ItsMtc {
			[] a_shutdown() {
				f_cf03Down(p_nodeB, p_nodeC);
				log("*** a_cf03Down: INFO: TEST COMPONENT NOW STOPPING ITSELF! ***");
				stop;   
			}
		}
				
		/**
		 * @desc Default handling cf04 de-initialisation.
		 */
		altstep a_cf04Down(in ItsNt p_nodeB, in ItsNt p_nodeC, in ItsNt p_nodeD) runs on ItsMtc {
			[] a_shutdown() {
				f_cf04Down(p_nodeB, p_nodeC, p_nodeD);
				log("*** a_cf04Down: INFO: TEST COMPONENT NOW STOPPING ITSELF! ***");
				stop;   
			}
		}
        
        group geoGeoUnicastAltsteps {
            
            /**
             * @desc    Receive GeoUnicast packet
             * @param   p_senderLongPosVec          Expected sender position vector
             * @param   p_destinationShortPosVec    Expected destination position vector
             * @param   p_seqNumber                 Expected sequence number
             */
            altstep a_receiveGeoUnicast(
                in template (present) LongPosVector p_senderLongPosVec,
                in template (present) ShortPosVector p_destinationShortPosVec,
                in template (present) UInt16 p_seqNumber
            ) runs on ItsNt {
                
                [] geoNetworkingPort.receive(mw_geoNwInd(mw_geoNwPdu(mw_geoUnicastHeader(
                    p_senderLongPosVec,
                    p_destinationShortPosVec,
                    p_seqNumber)))) {
                    }
            }     
            
            /**
             * @desc    Receive GeoUnicast packet for specific destination
             * @param   p_destinationShortPosVec    Expected destination position vector
             */
            altstep a_receiveGeoUnicastWithDestination(in template (present) ShortPosVector p_destinationShortPosVec) runs on ItsNt {
                
                [] a_receiveGeoUnicast(?, p_destinationShortPosVec, ?) {}
            }     
            
            /**
             * @desc Receive any GeoUnicast packet
             */
            altstep a_receiveAnyGeoUnicast() runs on ItsNt {
                
                [] a_receiveGeoUnicast(?, ?, ?) {}
            }  
            
        } // end geoGeoUnicastAltsteps
        
        group geoGeoBroadcastAltsteps {
            
            /**
             * @desc Receive GeoBroadcast packet
             * @param   p_srcLongPosVec     Expected source position vector
             * @param   p_senderLongPosVec  Expected sender position vector
             * @param   p_seqNumber         Expected sequence number
             */
            altstep a_receiveGeoBroadcast(
                in template (present) LongPosVector p_srcLongPosVec,                
                in template (present) LongPosVector p_senderLongPosVec,
                in template (present) UInt16 p_seqNumber
            ) runs on ItsNt {
                
                [] geoNetworkingPort.receive(mw_geoNwInd(mw_geoNwPdu(mw_geoBroadcastHeader(
                        p_srcLongPosVec,
                        p_senderLongPosVec,
                        p_seqNumber
                    )))) {
                }
            }
            
            /**
             * @desc Receive GeoBroadcast packet with specific Area and HopLimit
             * @param   p_srcLongPosVec     Expected source position vector
             * @param   p_senderLongPosVec  Expected sender position vector
             * @param   p_seqNumber         Expected sequence number
             * @param   p_broadcastArea     Expected geoBroadcastArea
             * @param   p_hopLimit          Expected hop limit
             */
            altstep a_receiveGeoBroadcastWithAreaWithHopLimit(
                in template (present) LongPosVector p_srcLongPosVec,                
                in template (present) LongPosVector p_senderLongPosVec,
                in template (present) UInt16 p_seqNumber,
                in template (present) GeoBroadcastArea p_broadcastArea,
                in template (present) UInt8 p_hopLimit
            ) runs on ItsNt {
                
                [] geoNetworkingPort.receive(mw_geoNwInd(mw_geoNwPdu(mw_geoBroadcastHeaderWithAreaWithHopLimit(
                        p_srcLongPosVec,
                        p_senderLongPosVec,
                        p_seqNumber,
                        p_broadcastArea,
                        p_hopLimit
                    )))) {
                }
            }            

            /**
             * @desc Receive GeoBroadcast packet for specific Geobroadcast Area
             * @param   p_srcLongPosVec     Expected source position vector
             * @param   p_senderLongPosVec  Expected sender position vector
             * @param   p_seqNumber         Expected sequence number
             * @param   p_broadcastArea     Expected geoBroadcastArea
             */
            altstep a_receiveGeoBroadcastWithArea(                
                in template (present) LongPosVector p_srcLongPosVec,
                in template (present) LongPosVector p_senderLongPosVec,
                in template (present) UInt16 p_seqNumber,
                in template (present) GeoBroadcastArea p_broadcastArea
            ) runs on ItsNt {
                
                [] geoNetworkingPort.receive(mw_geoNwInd(mw_geoNwPdu(mw_geoBroadcastHeaderWithArea(
                        p_srcLongPosVec,
                        p_senderLongPosVec,
                        p_seqNumber,
                        p_broadcastArea
                    )))) {
                }
            }               
                        
        } // end geoGeoBroadcastAltsteps

        group geoGeoAnycastAltsteps {
            
            /**
             * @desc Receive GeoAnycast packet
             * @param   p_srcLongPosVec     Expected source position vector
             * @param   p_senderLongPosVec  Expected sender position vector
             * @param   p_seqNumber         Expected sequence number
             */
            altstep a_receiveGeoAnycast(
                in template (present) LongPosVector p_srcLongPosVec,                
                in template (present) LongPosVector p_senderLongPosVec,
                in template (present) UInt16 p_seqNumber
            ) runs on ItsNt {
                
                [] geoNetworkingPort.receive(mw_geoNwInd(mw_geoNwPdu(mw_geoAnycastHeader(
                        p_srcLongPosVec,
                        p_senderLongPosVec,
                        p_seqNumber
                    )))) {
                }
            }
            
            /**
             * @desc Receive GeoAnycast packet with specific Area and HopLimit
             * @param   p_srcLongPosVec     Expected source position vector
             * @param   p_senderLongPosVec  Expected sender position vector
             * @param   p_seqNumber         Expected sequence number
             * @param   p_anycastArea       Expected geoAnycastArea
             * @param   p_hopLimit          Expected hop limit
             */
            altstep a_receiveGeoAnycastWithAreaWithHopLimit(
                in template (present) LongPosVector p_srcLongPosVec,                
                in template (present) LongPosVector p_senderLongPosVec,
                in template (present) UInt16 p_seqNumber,
                in template (present) GeoAnycastArea p_anycastArea,
                in template (present) UInt8 p_hopLimit
            ) runs on ItsNt {
                
                [] geoNetworkingPort.receive(mw_geoNwInd(mw_geoNwPdu(mw_geoAnycastHeaderWithAreaWithHopLimit(
                        p_srcLongPosVec,
                        p_senderLongPosVec,
                        p_seqNumber,
                        p_anycastArea,
                        p_hopLimit
                    )))) {
                }
            }            

            /**
             * @desc Receive GeoAnycast packet for specific GeoAnycast Area
             * @param   p_srcLongPosVec     Expected source position vector
             * @param   p_senderLongPosVec  Expected sender position vector
             * @param   p_seqNumber         Expected sequence number
             * @param   p_anycastArea       Expected geoAnycastArea
             */
            altstep a_receiveGeoAnycastWithArea(                
                in template (present) LongPosVector p_srcLongPosVec,
                in template (present) LongPosVector p_senderLongPosVec,
                in template (present) UInt16 p_seqNumber,
                in template (present) GeoAnycastArea p_anycastArea
            ) runs on ItsNt {
                
                [] geoNetworkingPort.receive(mw_geoNwInd(mw_geoNwPdu(mw_geoAnycastHeaderWithArea(
                        p_srcLongPosVec,
                        p_senderLongPosVec,
                        p_seqNumber,
                        p_anycastArea
                    )))) {
                }
            }               
                        
        } // end geoGeoAnycastAltsteps
        
        group geoLocationServiceAltsteps {

            /**
             * @desc    Receive Location Service Request
             * @param   p_seqNumber Expected sequence number of the received LS Request
             * @param   p_gnAddress GN address expected in received LS Request
             * @param   p_reqSrcPosVector Expected source position vector of the received LS Request
             */
            altstep a_receiveLsRequest(
                in template (present) UInt16 p_seqNumber,
                in template (present) GN_Address.mid p_mid,
                out LongPosVector p_reqSrcPosVector
            ) runs on ItsNt {
                var GeoNetworkingInd v_msg;
                
                [] geoNetworkingPort.receive(
                    mw_geoNwInd(
                        mw_geoNwPdu(
                            mw_lsRequestHeader(
                                p_seqNumber,
								p_mid
                            )
                        )
                    )
                ) -> value v_msg {
                    p_reqSrcPosVector := valueof(v_msg.msgIn.header.lsRequestHeader.srcPosVector);
                }
            }
            
            /**
             * @desc Receive any Location Service Request
             */
            altstep a_receiveAnyLsRequest() runs on ItsNt {
                var LongPosVector v_reqSrcPosVector;
                
                [] a_receiveLsRequest(?, ?, v_reqSrcPosVector) {}
            }
            
            /**
             * @desc Receive Location Service Request and send Location Service Reply
             * @param   p_reqSeqNumber          Expected sequence number of the received LS Request
             * @param   p_gnAddress             GN address expected in received LS Request
             * @param   p_repSrcPosVector       Source position vector of the sent LS Response
             * @param   p_repSenderPosVector    Sender position vector of the sent LS Response  
             */
            altstep a_receiveLsRequestAndReply(
                in template (present) UInt16 p_reqSeqNumber,
                in template (value) GN_Address.mid p_mid,
                in template (value) LongPosVector p_repSrcPosVector,
                in template (value) LongPosVector p_repSenderPosVector
            ) runs on ItsNt {
                var LongPosVector v_repDstPosVector;
                
                [] a_receiveLsRequest(p_reqSeqNumber, p_mid, v_repDstPosVector) {
                    f_sendGeoNetMessage(m_geoNwReq_linkLayerBroadcast(m_geoNwPduNoPayload(
                        m_lsReplyHeader(
                        p_repSrcPosVector,
                        f_longPosVector2ShortPosVector(v_repDstPosVector),
                        p_repSenderPosVector,
                        vc_localSeqNumber   
                    )))); 
                }
            }
          
        } // end geoLocationServiceAltsteps
        
        
    } // end geoAltsteps
    
    group preambles {
        
        /**
         * @desc The default preamble.
         */
        function f_prDefault() runs on ItsNt {
            activate(a_default());
        }

        /**
         * @desc Preamble for non-neighbour nodes
         */        
        function f_prNonNeighbour() runs on ItsNt {
            f_prDefault();
        }

        /**
         * @desc Preamble for neighbour nodes
         */        
        function f_prNeighbour() runs on ItsNt {
            f_prDefault();
            f_startBeingNeighbour();        
        }
        
        /**
         * @desc Brings the IUT into an initial state.
         */
        function f_initialState() runs on ItsAdapterComponent {
           
            f_utInitializeIut(m_gnInitialize);
        }
        
        
        /**
         * @desc    Receive and reply to LS Requests
         * @param   p_reqSeqNumber          Expected sequence number of the received LS Request
         * @param   p_gnAddress             GN address expected in received LS Request
         * @param   p_repSrcPosVector       Source position vector of the sent LS Response
         * @param   p_repSenderPosVector    Sender position vector of the sent LS Response
         */
        function f_handleLocationService(
          in template (present) UInt16 p_reqSeqNumber,
          in template (value) GN_Address.mid p_mid,
          in template (value) LongPosVector p_repSrcPosVector,
          in template (value) LongPosVector p_repSenderPosVector
        ) runs on ItsNt {
            
            tc_ac.start;
            alt {
                [] a_receiveLsRequestAndReply(p_reqSeqNumber, p_mid, p_repSrcPosVector, p_repSenderPosVector) {
                    tc_ac.stop;
                }
            }
            
        }
        
        /**
         * @desc    Send LS request and receive LS Reply
         * @param   p_reqSrcPosVector   Source position vector of the sent LS Request
         * @param   p_reqSeqNumber      Sequence number of the sent LS Request
         * @param   p_gnAddress         GN address for which the LS Request is sent
         * @param   p_repSrcPosVector   Expected source position vector in received LS Response
         * @return  FncRetCode
         */
        function f_processLocationService(
          in template (value) LongPosVector p_reqSrcPosVector,
          in template (value) UInt16 p_reqSeqNumber,
          in template (value) GN_Address p_gnAddress,
          out LongPosVector p_repSrcPosVector
        ) runs on ItsNt return FncRetCode {
            var FncRetCode v_ret := e_error;
            var GeoNetworkingInd v_msg;
            
            f_sendGeoNetMessage(
                m_geoNwReq_linkLayerBroadcast(
                    m_geoNwPduNoPayload(
                        m_lsRequestHeader(
                            p_reqSrcPosVector,
                            p_reqSrcPosVector,
                            p_reqSeqNumber,
                            p_gnAddress
                        )
                    )
                )
            );
            
            tc_ac.start;
            alt {
                [] geoNetworkingPort.receive(
                        mw_geoNwInd(
                            mw_geoNwPdu(
                                mw_lsReplyHeader(
                                    ?,
                                    mw_shortPosVectorPosition(f_longPosVector2ShortPosVector(valueof(p_reqSrcPosVector)))
                                )
                            )
                        )
                    ) -> value v_msg { 
                    tc_ac.stop;
                    p_repSrcPosVector := valueof(v_msg.msgIn.header.lsReplyHeader.srcPosVector);
                    v_ret := e_success;
                }
            }
            
            return v_ret;
        }
        
    } // end preambles
    
    group postambles {
        
        /**
         * @desc The default postamble.
         */
        function f_poDefault() runs on ItsNt {
            //empty
        }

        /**
         * @desc Postamble for neighbour nodes
         */          
        function f_poNeighbour() runs on ItsNt {
            f_stopBeingNeighbour();
            f_poDefault();           
        }
        
    } // end postambles
    
    group adapterControl {
        
        /**
         * @desc    Triggers event in the test system adaptation.
         * @param   p_event The event to trigger
         * @return  FncRetCode
         */
        function f_acTriggerEvent(template (value) AcGnPrimitive p_event) runs on ItsAdapterComponent return FncRetCode {
            var FncRetCode v_ret := e_success;
            
            acPort.send(p_event);
            
            return v_ret;
        }
        
        /**
         * @desc    Get the position vector corresponding to a specific GN address
         * @param   p_gnAddress     GN address for which the search is performed
         * @return  LongPosVector - IUT's position
         */
        function f_acGetLongPosVector(GN_Address p_gnAddress) runs on ItsAdapterComponent return LongPosVector {
            var AcGnResponse v_result;
            
            f_acTriggerEvent(m_getLongPosVector(p_gnAddress));
            tc_ac.start;
            alt {
                [] acPort.receive(mw_getLongPosVectorAny(p_gnAddress)) -> value v_result {
                    tc_ac.stop;
                }
                [] acPort.receive {
                    tc_ac.stop;
                    log("*** f_acGetLongPosVector: ERROR: Received unexpected message ***");
                    f_selfOrClientSyncAndVerdict("error", e_error);
                }
                [] tc_ac.timeout {
                    log("*** f_acGetLongPosVector: ERROR: Timeout while waiting for adapter control event result ***");
                    f_selfOrClientSyncAndVerdict("error", e_timeout);
                }
            }
            
            return v_result.getLongPosVector;
        }
        
        /**
         * @desc    Triggers test adapter to send beacons for multiple neighbours
         * @param   p_numberOfNeighbour Number of neighbours to simulate
         * @return  FncRetCode
         */
        function f_acStartBeaconingMultipleNeighbour(in integer p_numberOfNeighbour) runs on ItsNt return FncRetCode {
            
            return f_acTriggerEvent(m_startBeaconingMultipleNeighbour(m_beaconHeader(f_getPosition(vc_componentName)).beaconHeader, p_numberOfNeighbour));
            
        }
        
    } // end adapterControl
    
    group commonFunctions {
        
        /**
         * @desc    Gets the value of the lifetime in seconds.
         * @param   p_lifetime Lifetime to be converted
         * @return  Lifetime in seconds
         */
        function f_getLifetimeValue(in Lifetime p_lifetime) runs on ItsNt return float {
            var float v_lifetime := 0.0;
          
            select (p_lifetime.ltBase) {
                case (e_50ms) {
                    v_lifetime := int2float(p_lifetime.multiplier) * 0.5;
                }
                case (e_1s) {
                    v_lifetime := int2float(p_lifetime.multiplier) * 1.0;
                }
                case (e_10s) {
                    v_lifetime := int2float(p_lifetime.multiplier) * 10.0;
                }
                case (e_100s) {
                    v_lifetime := int2float(p_lifetime.multiplier) * 100.0;
                }
            }
          
            return v_lifetime;
        }
        
        /**
         * @desc    Computes GN timestamp based on current time
         * @return  Unix-Epoch-Time mod 2^32
         */
        function f_computeGnTimestamp() return UInt32 {
        	
        	//  Timestamp is 1s older than current time to avoid sending beacons coming from the future (time sync between nodes)
        	var UInt32 v_timestamp := fx_computeGnTimestamp() - 1000;
            return v_timestamp;	
        } 
      
    } // end commonFunctions
    
    group testerFunctions {
        
        /**
         * @desc    Gets the tester GN local address for a specific node
         * @param   p_node  Simulated node
         * @return  GN address of simulated node
         */
        function f_getTsGnLocalAddress(in charstring p_node) return GN_Address {
            var GN_Address v_gnAddr := valueof(m_dummyGnAddr);
            
            select (p_node) {
                case (c_compNodeA) {
                    v_gnAddr := PX_TS_NODE_A_LOCAL_GN_ADDR;
                }
                case (c_compNodeB) {
                    v_gnAddr := PX_TS_NODE_B_LOCAL_GN_ADDR;
                }
                case (c_compNodeC) {
                    v_gnAddr := PX_TS_NODE_C_LOCAL_GN_ADDR;
                }
                case (c_compNodeD) {
                    v_gnAddr := PX_TS_NODE_D_LOCAL_GN_ADDR;
                }
                case else {
					log("*** f_getTsGnLocalAddress: INFO: Unknown component " & p_node & " ***");
                }
            }
            
            return v_gnAddr;
        }
        
        /**
         * @desc    Sends a GeoNetworking message and in case of an included sequence number in the message the 
         *          local sequence number will be increased by one.
         * @param   p_geoNetReq The message to send.
         */
        function f_sendGeoNetMessage(in template (value) GeoNetworkingReq p_geoNetReq) runs on ItsNt {
            geoNetworkingPort.send(p_geoNetReq);
            if (not (ischosen(p_geoNetReq.msgOut.header.shbHeader) or ischosen(p_geoNetReq.msgOut.header.beaconHeader))) {
                f_setLocalSequenceNumber();
            }
        }
      
        /**
         * @desc    Sets the value of the sequence number for the next event.
         */
        function f_setLocalSequenceNumber() runs on ItsNt {
            vc_localSeqNumber := (vc_localSeqNumber + 1) mod c_uInt16Max;
        }
        
    } // end testerFunctions
    
    group iutFunctions {
        
        /**
         * @desc    Gets the IUT GN local address
         * @return  IUT's GN_Address
         * @see     PICS_GN_LOCAL_GN_ADDR
         */
        function f_getIutGnLocalAddress() return GN_Address {
            
            return PICS_GN_LOCAL_GN_ADDR;
        }
        
        /**
         * @desc    Gets the IUT GN local address configuration method
         * @return  TypeOfAddress - IUT's GN local address configuration method
         * @see     PICS_GN_LOCAL_ADDR_CONF_METHOD
         */
        function f_getIutGnLocalAddressConfigurationMethod() return TypeOfAddress {
            return PICS_GN_LOCAL_ADDR_CONF_METHOD;
        }
        
        /**
         * @desc    Gets the IUT MAc address
         * @return  MacAddress - IUT's MAc Address
         * @see     PICS_IUT_MAC_ADDRESS
         */
        function f_getIutMacAddress() return MacAddress {
        	return PICS_IUT_MAC_ADDRESS;
        }
        
        /**
         * @desc    Gets the GeoUnicast forwarding algorithm
         * @return  IUT's GeoUnicast forwarding algorithm
         * @see     PICS_GN_GEOUNICAST_FORWARDING_ALGORITHM
         */
        function f_getGeoUnicastForwardingAlgorithm() return GeoUnicastForwardingAlgorithm {
            return PICS_GN_GEOUNICAST_FORWARDING_ALGORITHM;
        }
        
        /**
         * @desc    Gets the GeoBroadcast forwarding algorithm
         * @return  IUT's GeoBroadcast forwarding algorithm
         * @see     PICS_GN_GEOBROADCAST_FORWARDING_ALGORITHM
         */
        function f_getGeoBroadcastForwardingAlgorithm() return GeoBroadcastForwardingAlgorithm {
            return PICS_GN_GEOBROADCAST_FORWARDING_ALGORITHM;
        }
        
        /**
         * @desc    Gets the IUT default hop limit
         * @return  IUT's default hop limit
         * @see     PICS_GN_DEFAULT_HOP_LIMIT
         */
        function f_getDefaultHopLimit() return UInt8 {
            return PICS_GN_DEFAULT_HOP_LIMIT;
        }
        
        /**
         * @desc    Gets the LS retransmission timer.. Valid for NetRepInterval = default (cong. ctrl).
         * @return  LS retransmission timer in seconds
         * @see     PICS_GN_LOCATION_SERVICE_RETRANSMIT_TIMER
         */
        function f_getLsRetransmitTimer() return float {
            var float v_itsGnLocationServiceRetransmitTimer := int2float(PICS_GN_LOCATION_SERVICE_RETRANSMIT_TIMER/1000);
            
            return v_itsGnLocationServiceRetransmitTimer;
        }
        
        /**
         * @desc    Gets the LS retransmission timer for NetRepInterval = medium (cong. ctrl).
         * @return  LS retransmission timer (medium) in seconds
         * @see     PX_GN_LOCATION_SERVICE_TIMER_MEDIUM
         */
        function f_getLsRetransmitTimerMedium() return float {
            var float v_itsGnLocationServiceRetransmitTimerMedium := int2float(PX_GN_LOCATION_SERVICE_TIMER_MEDIUM/1000);
            
            return v_itsGnLocationServiceRetransmitTimerMedium;
        }
        
        /**
         * @desc    Gets the LS retransmission timer for NetRepInterval = maximum (cong. ctrl).
         * @return  LS retransmission timer (maximum) in seconds
         * @see     PX_GN_LOCATION_SERVICE_TIMER_MAXIMUM
         */
        function f_getLsRetransmitTimerMaximum() return float {
            var float v_itsGnLocationServiceRetransmitTimerMaximum := int2float(PX_GN_LOCATION_SERVICE_TIMER_MAXIMUM/1000);
            
            return v_itsGnLocationServiceRetransmitTimerMaximum;
        }

        /**
         * @desc    Gets the App retransmission timer. Valid for AppRepInterval = default (cong. ctrl).
         * @return  App retransmission timer in seconds
         * @see     PX_GN_APPLICATION_RETRANSMIT_TIMER
         */
        function f_getAppRetransmitTimer() return float {
            var float v_itsGnLocationApplicationRetransmitTimer := int2float(PX_GN_APPLICATION_RETRANSMIT_TIMER/1000);
            
            return v_itsGnLocationApplicationRetransmitTimer;
        }
        
        /**
         * @desc    Gets the App retransmission timer for AppRepInterval = medium (cong. ctrl).
         * @return  App retransmission timer (medium) in seconds
         * @see     PX_GN_APPLICATION_RETRANSMIT_TIMER_MEDIUM
         */
        function f_getAppRetransmitTimerMedium() return float {
            var float v_itsGnLocationApplicationRetransmitTimerMedium := int2float(PX_GN_APPLICATION_RETRANSMIT_TIMER_MEDIUM/1000);
            
            return v_itsGnLocationApplicationRetransmitTimerMedium;
        }
        
        /**
         * @desc    Gets the App retransmission timer for AppRepInterval = maximum (cong. ctrl).
         * @return  App retransmission timer (maximum) in seconds
         * @see     PX_GN_APPLICATION_RETRANSMIT_TIMER_MAXIMUM
         */
        function f_getAppRetransmitTimerMaximum() return float {
            var float v_itsGnLocationApplicationRetransmitTimerMaximum := int2float(PX_GN_APPLICATION_RETRANSMIT_TIMER_MAXIMUM/1000);
            
            return v_itsGnLocationApplicationRetransmitTimerMaximum;
        }
        
        /**
         * @desc    Gets the LS maximum retransmission number.
         * @return  LS maximum retransmission number
         * @see     PICS_GN_LOCATION_SERVICE_MAX_RETRANS
         */
        function f_getLsMaxRetrans() return integer {
            var integer v_itsGnLocationServiceMaxRetrans := PICS_GN_LOCATION_SERVICE_MAX_RETRANS;
            
            return v_itsGnLocationServiceMaxRetrans;
        }

        /**
         * @desc    Gets the Application maximum retransmission number.
         * @return  Application maximum retransmission number
         * @see     PX_GN_APPLICATION_MAX_RETRANS
         */
        function f_getAppMaxRetrans() return integer {
            var integer v_itsGnApplicationMaxRetrans := PX_GN_APPLICATION_MAX_RETRANS;
            
            return v_itsGnApplicationMaxRetrans;
        }
        
        /**
         * @desc    Gets the Location Service packet buffer size.
         * @return  Location Service packet buffer size in Kbytes
         * @see     PICS_GN_LOCATION_SERVICE_PACKET_BUFFER_SIZE
         */        
        function f_getLsPacketBufferSize() return integer {
            var integer v_itsGnLocationServicePacketBufferSize := PICS_GN_LOCATION_SERVICE_PACKET_BUFFER_SIZE;
            
            return v_itsGnLocationServicePacketBufferSize;
        } // end f_getLsPacketBufferSize
        
        /**
         * @desc    Gets the UC forwarding packet buffer size.
         * @return  UC forwarding packet buffer size in Kbytes
         * @see     PICS_GN_UC_FORWARDING_PACKET_BUFFER_SIZE
         */        
        function f_getUcForwardingPacketBufferSize() return integer {
            var integer v_itsGnUcForwardingPacketBufferSize := PICS_GN_UC_FORWARDING_PACKET_BUFFER_SIZE;
            
            return v_itsGnUcForwardingPacketBufferSize;
        } // end f_getUcForwardingPacketBufferSize
        
        /**
         * @desc    Gets the BC forwarding packet buffer size.
         * @return  BC forwarding packet buffer size in Kbytes
         * @see     PICS_GN_BC_FORWARDING_PACKET_BUFFER_SIZE
         */        
        function f_getBcForwardingPacketBufferSize() return integer {
            var integer v_itsGnBcForwardingPacketBufferSize := PICS_GN_BC_FORWARDING_PACKET_BUFFER_SIZE;
            
            return v_itsGnBcForwardingPacketBufferSize;
        } // end f_getBcForwardingPacketBufferSize        
        
        /**
         * @desc    Gets the maximum lifetime of a packet.
         * @return  Maximum lifetime of a packet in seconds
         * @see     PICS_GN_MAX_PACKET_LIFETIME
         */
        function f_getMaxPacketLifeTime() return float {
            var float v_itsGnMaxPacketLifetime := int2float(PICS_GN_MAX_PACKET_LIFETIME);
            
            return v_itsGnMaxPacketLifetime;
        }
        
        /**
         * @desc    Gets delta for timers.
         * @return  Delta for timers in seconds
         * @see     PX_T_DELTA
         */
        function f_getDeltaTimer() return float {
            var float v_deltaTimer := PX_T_DELTA;
            
            return v_deltaTimer;
        }
        
        /**
         * @desc Gets the beacon service retransmit timer.
         * @return  Beacon service retransmit timer 
         */
        function f_getBsRetransmitTimer() return float {
            var float v_itsGnBeaconServiceRetransmitTimer;
            
            v_itsGnBeaconServiceRetransmitTimer := int2float(
                (PICS_GN_BEACON_SERVICE_TIMER/1000));
            
            return v_itsGnBeaconServiceRetransmitTimer;
        }
        
        /**
         * @desc    Gets the beacon service retransmit timer for NetBeaconInterval = medium (cong. ctrl).
         * @return  Beacon service retransmit timer (medium)
         */
        function f_getBsRetransmitTimerMedium() return float {
            var float v_itsGnBeaconServiceRetransmitTimerMedium; // timer value increased (medium)
            
            v_itsGnBeaconServiceRetransmitTimerMedium := int2float(
                (PX_GN_BEACON_SERVICE_TIMER_MEDIUM+float2int((f_getBsMaxJitter() - 0.0 +1.0)*rnd()) + 0)/1000);
            
            return v_itsGnBeaconServiceRetransmitTimerMedium;
        }
        
        /**
         * @desc    Gets the beacon service retransmit timer for NetBeaconInterval = maximum (cong. ctrl).
         * @return  Beacon service retransmit timer (maximum)
         */
        function f_getBsRetransmitTimerMaximum() return float {
            var float v_itsGnBeaconServiceRetransmitTimerMaximum; // timer value increased (maximum)
            
            v_itsGnBeaconServiceRetransmitTimerMaximum := int2float(
                (PX_GN_BEACON_SERVICE_TIMER_MAXIMUM+float2int((f_getBsMaxJitter() - 0.0 +1.0)*rnd()) + 0)/1000);
            
            return v_itsGnBeaconServiceRetransmitTimerMaximum;
        }
        
        /**
         * @desc    Gets the maximum beacon service jitter.
         * @return  Maximum beacon service jitter
         */
        function f_getBsMaxJitter() return float {
            var float v_itsGnBeaconServiceMaxJitter := int2float(PICS_GN_BEACON_SERVICE_MAX_JITTER)/1000.0;
            
            return v_itsGnBeaconServiceMaxJitter;
        }

        /**
         * @desc    Gets the Lifetime of a Location Table Entry.
         * @return  Lifetime of a Location Table Entry in seconds
         * @see     PICS_GN_LIFETIME_LOC_TE
         */        
        function f_getLifetimeLocTableEntry() return float {
            var float v_itsGnLifetimeLocTableEntry := int2float(PICS_GN_LIFETIME_LOC_TE);
            
            return v_itsGnLifetimeLocTableEntry;
        } // end f_getLifetimeLocTableEntry
        
        /**
         * @desc    Gets the maximum communication range for CBF algorithm
         * @return  Maximum communication range for CBF algorithm in meters
         * @see     PICS_GN_DEFAULT_MAX_COMMUNICATION_RANGE
         */
        function f_getCbfMaxCommunicationRange() return integer {
            var integer v_maxCommunicationRange := PICS_GN_DEFAULT_MAX_COMMUNICATION_RANGE;
            
            return v_maxCommunicationRange;
        } // end f_getCbfMaxCommunicationRange
        
        function f_getGeoUnicastCbfMaxTime() return integer {
            var integer v_cbfMaxTime := PICS_GN_GEOUNICAST_CBF_MAX_TIME;
            
            return v_cbfMaxTime;            
        } // end f_getGeoUnicastCbfMaxTime

        function f_getGeoUnicastCbfMinTime() return integer {
            var integer v_cbfMinTime := PICS_GN_GEOUNICAST_CBF_MIN_TIME;
            
            return v_cbfMinTime;
        } // end f_getGeoUnicastCbfMinTime
        
        /**
         * @desc    Set the number of neighbour in the Location Table.
         * @see     PX_MIN_NR_NEIGHBOUR
         */        
        function f_setNrNeighbourLocTableDefault() runs on ItsNt {
            var integer v_nrNeighbour := f_random (0, PX_MIN_NR_NEIGHBOUR);
            
            f_acStartBeaconingMultipleNeighbour(v_nrNeighbour);
            
        } // end f_setNrNeighbourLocTableDefault
        
        /**
         * @desc    Set the number of neighbour in the Location Table (medium).
         * @see     PX_MIN_NR_NEIGHBOUR
         * @see     PX_MAX_NR_NEIGHBOUR
         */        
        function f_setNrNeighbourLocTableMedium() runs on ItsNt {
            var integer v_nrNeighbour := f_random (PX_MIN_NR_NEIGHBOUR, PX_MAX_NR_NEIGHBOUR);
            
            f_acStartBeaconingMultipleNeighbour(v_nrNeighbour);
            
        } // end f_setNrNeighbourLocTableMedium
        
        /**
         * @desc    Set the number of neighbour in the Location Table (maximum).
         * @see     PX_MAX_NR_NEIGHBOUR
         * @see     PX_MIN_NR_NEIGHBOUR
         */        
        function f_setNrNeighbourLocTableMaximum() runs on ItsNt {
            var integer v_nrNeighbour := f_random (PX_MAX_NR_NEIGHBOUR, (2*PX_MIN_NR_NEIGHBOUR));
            
            f_acStartBeaconingMultipleNeighbour(v_nrNeighbour);
            
        } // end f_setNrNeighbourLocTableMaximum
        
    } // end iutFunctions
    
    group posVectorFunctions {
        
        /**
         * @desc    Convert long position vector to short position vector 
         * @param   p_longPosVector Long position vector to be converted
         * @return  Short position vector
         */
        function f_longPosVector2ShortPosVector(in LongPosVector p_longPosVector) return ShortPosVector {
            var ShortPosVector v_shortPosVector;
            
            v_shortPosVector := {
                gnAddr := p_longPosVector.gnAddr, 
                timestamp := p_longPosVector.timestamp, 
                latitude := p_longPosVector.latitude, 
                longitude := p_longPosVector.longitude
            };
            
            return v_shortPosVector; 
        }
        
        /**
         * @desc    Get IUT's long position vector
         * @return  IUT's long position vector
         */
        function f_getIutLongPosVector() runs on ItsAdapterComponent return LongPosVector {
            return f_acGetLongPosVector(f_getIutGnLocalAddress()); 
        }
        
        /**
         * @desc    Get IUT's short position vector
         * @return  IUT's short position vector
         */
        function f_getIutShortPosVector() runs on ItsAdapterComponent return ShortPosVector {
            return f_longPosVector2ShortPosVector(f_getIutLongPosVector()); 
        }
        
        /**
         * @desc    Compute a position using a reference position, a distance and an orientation 
         * @param   p_iutLongPosVector Reference position
         * @param   p_distance Distance to the reference position (in meter)
         * @param   p_orientation direction of the computed position (0 to 359; 0 means North)
         * @return  LongPosVector
         */        
        function f_computePositionUsingDistance(in LongPosVector p_iutLongPosVector, in integer p_distance, in integer p_orientation) 
        return LongPosVector {
            var LongPosVector v_result := p_iutLongPosVector;
            
            log("*** f_computePositionUsingDistance: INFO: calling fx_computePositionUsingDistance() ***");
            fx_computePositionUsingDistance(p_iutLongPosVector.latitude, p_iutLongPosVector.longitude, p_distance, p_orientation, v_result.latitude, v_result.longitude);
            
            return v_result;
        }
        
    } // end posVectorFunctions
    
    group externalFunctions {

        /**
         * @desc    External function to compute distance between two points
         * @param   p_latitudeA   Latitude of first point
         * @param   p_longitudeA  Longitude of first point
         * @param   p_latitudeB   Latitude of second point
         * @param   p_longitudeB  Longitude of second point
         * @return  Computed distance in meters
         */
        external function fx_computeDistance(
            in Int32 p_latitudeA, in Int32 p_longitudeA, 
            in Int32 p_latitudeB, in Int32 p_longitudeB
        ) return float;
        
        /**
         * @desc    External function to compute a position using a reference position, a distance and an orientation 
         * @param   p_iutLongPosVector  Reference position
         * @param   p_distance          Distance to the reference position (in meter)
         * @param   p_orientation       Direction of the computed position (0 to 359; 0 means North)
         * @param   p_latitude          Computed position's latitude
         * @param   p_longitude         Computed position's longitude
         * @return  LongPosVector
         */        
        external function fx_computePositionUsingDistance(
            in Int32 p_refLatitude, 
            in Int32 p_refLongitude, 
            in integer p_distance, 
            in integer p_orientation,
            out Int32 p_latitude,
            out Int32 p_longitude
        );
        
        /**
         * @desc    External function to compute timestamp based on current time
         * @return  Unix-Epoch-Time mod 2^32
         */
        external function fx_computeGnTimestamp() return UInt32;       
    }
    
} // end LibItsGeoNetworking_Functions