/* -*-	Mode:C++; c-basic-offset:8; tab-width:8; indent-tabs-mode:t -*-  *
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 *	This product includes software developed by the Computer Systems
 *	Engineering Group at Lawrence Berkeley Laboratory.
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 * $Header: /nfs/jade/vint/CVSROOT/ns-2/mac/wireless-phy.h,v 1.11 2002/05/30 00:00:19 buchheim Exp $
 *
 * Ported from CMU/Monarch's code, nov'98 -Padma Haldar.
 *
 * wireless-phy.h
 * -- a SharedMedia network interface
 */

#ifndef ns_WirelessPhy_h
#define ns_WirelessPhy_h

#include "propagation.h"
#include "modulation.h"
#include "omni-antenna.h"
#include "phy.h"
#include "mobilenode.h"
#include "timer-handler.h"

class Phy;
class Propagation;
class WirelessPhy;

// For idle energy consumption -- Chalermek

class Idle_Timer : public TimerHandler {
 public:
	Idle_Timer(WirelessPhy *a) : TimerHandler() { a_ = a; }
 protected:
	virtual void expire(Event *e);
	WirelessPhy *a_;
};

class WirelessPhy : public Phy {
public:
	WirelessPhy();
	
	void sendDown(Packet *p);
	int sendUp(Packet *p);
	
	inline double getL() const {return L_;}
	inline double getLambda() const {return lambda_;}
	inline Node* node(void) const { return node_; }
	inline double getPtconsume() { return Pt_consume_; }
  
	virtual int command(int argc, const char*const* argv);
	virtual void dump(void) const;
	
	//void setnode (MobileNode *node) { node_ = node; }
	void node_on();
	void node_off();	
protected:
	double Pt_;		// transmitted signal power (W)
	double Pt_consume_;	// power consumption for transmission (W)
	double Pr_consume_;	// power consumption for reception (W)
	double P_idle_;         // idle power consumption (W)
	double last_send_time_;	// the last time the node sends somthing.
	double channel_idle_time_;	// channel idle time.
	double update_energy_time_;	// the last time we update energy.

	double freq_;           // frequency
	double lambda_;		// wavelength (m)
	double L_;		// system loss factor
  
	double RXThresh_;	// receive power threshold (W)
	double CSThresh_;	// carrier sense threshold (W)
	double CPThresh_;	// capture threshold (db)
  
	Antenna *ant_;
	Propagation *propagation_;	// Propagation Model
	Modulation *modulation_;	// Modulation Schem

	// Why phy has a node_ and this guy has it all over again??
//  	MobileNode* node_;         	// Mobile Node to which interface is attached .

	Idle_Timer idle_timer_;
	
	enum ChannelStatus { IDLE, RECV, SEND };
	int status_;
private:
	inline int initialized() {
		return (node_ && uptarget_ && downtarget_ && propagation_);
	}
	void UpdateIdleEnergy();
	// Convenience method
	EnergyModel* em() { return node()->energy_model(); }

	friend class Idle_Timer;
};

#endif /* !ns_WirelessPhy_h */
