Energy extraction method:

#include

iNode = (MobileNode *) (Node::get_node_by_address(index));

energy = thisnode->energy_model()->energy();

iEnergy = iNode->energy_model()->energy();

=================According to actual needs: TCL================

set opt(engmodel) EnergyModel ;# set Energy Model

set opt(initeng) 10000.0 ;# total energy

set opt(txPower) 0.660 ;# tx energy

set opt(rxPower) 0.395 ;# rx energy

set opt(idlePower) 0.035 ;

===============node-config: TCL============================

$ns_ node-config -adhocRouting $val(rp) /

-llType $val(ll) /

-macType $val(mac) /

-ifqType $val(ifq) /

-ifqLen $val(ifqlen) /

-antType $val(ant) /

-propType $val(prop) /

-phyType $val(netif) /

-energyModel $opt(engmodel) /

-initialEnergy $opt(initeng) /

-txPower $opt(txPower) /

-rxPower $opt(rxPower) /

-idlePower $opt(idlePower) /

-topoInstance $topo /

-agentTrace OFF /

-routerTrace OFF /

-macTrace ON /

-movementTrace OFF /

-channel $chan_1_

Hi,

the answer from Hang is a very good starting point for an energy model.

You have to specify all possible events within the simulation. Node-internal events, node-to-node events, node-to-environment events (and reverse). 

You also have to specify the abstraction level of you energy model...real energy consumption on the physical layer (very hard to implement) or virtual energy units, which fit to the communication behaviour.

Furthermore, the time is a very critical issue. What is your minimal time unit (tick counter). Accordingly, you have to map energy units to this time base.

For any kind of communication stack, don't forget command & control traffic (besides your payload), which have to be included into your energy model.

kind regards,

Matthias

Hi,

May be the question is about how to calculate some performance measure related to energy consumption. in this case you need to add  some AWK code to analyse the simulation trace file.

regards.

If default, the trace file does not contain any energy information. We need to add extra code to generate it.

regarding how to add code, see:

https://getch.wordpress.com/2011/02/08/obtaining-node-position-and-energy-dynamically-in-ns2/

hi,

to Hang shen

to include energy information  we just add in the simulation script :

set opt(logenergy) "on"