[sim-wg] Status of Power TOSSIM-2

[Junzhao Du]

Hi Venkatesh,

    Good work! Hope we can use and test your codes. Now do you release
it, where?

Thanks,
junzhao


On 5/30/07, Venkatesh S. <svenkat at cedt.iisc.ernet.in> wrote:
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> Hello everyone,
>
> I am giving some final touches to the power profiling in Tossim for T2.
>
> Modules Completed:
>   1) CPU power profiling - Monitoring the MCU Control register of the
> microcontroller ATMega128 and computing the power consumption of each CPU
> state.
>   2) LED Power profiling - Monitoring the PortA pins (A0, A1 and A2) to
> which Leds are connected, and computing the power consumption for each Led.
>   3) Radio power profiling - Monitoring the SPI read and write to the radio,
> and computing the power consumption of Radio transmit(Tx) and receive (Rx)
> states.
>
> Other Modules:
>
>   a) Noise characterization using MCU's ADC
>
>         We use the existing Closest Pattern Matching (CPM) developed by
> HyunagJune Lee et al to generate the noise samples for a  simulation (say
> X).  We then obtain the Tx power level (say Y) of the remaining nodes by
> peeking into the CC1000's internal registers. The "gain" parameter specifies
> the power level at the receiver (say Z). Using X, Y, and Z we finally
> compute the RSSI(dBm) for a reciever to sense the medium based on which the
> MAC layer decides "busy" and "free" channel.
>
>   b) Support for B-MAC (CC1000 MAC) functionality for simulation.
>         Three files were modified in order to run the B-MAC simulation.  At
> the HPL level, each byte of transmission is signalled to all the other
> nodes.  It is a byte level simulation to suit the CC1000 radio. B-MAC with
> acknowledgements also works satisfactorily.
>
>   c) Support for obtaining node expended energy at the end of the
> simulation. (modified tossim.c, tossim.i files and used SWIG tool).
>
> ToDo :
>
>     i) Thorough testing and comparision of power profiling with respect to
> AVRORA.  I am currently working on this.
>
>    ii) Should add the functionality of getting only connectivity based node
> Tx Power level.
>
>   iii) Should add the functionality of signalling the SPI read events only
> to the nodes that are connected to the transmitting node.
>
>    iv) Monitoring the External Memory access and computation of energy for
> read and write to memory.
> Specifically, it is adding the AT45DB functionality for simulation. Since
> this is restricted to power profiling, we do not intend to create or emulate
> the memory. Any pointers/feedback will help a lot.
>
>     v) A packet level simulation module for CC1000. Any pointers on this
> will help immensely.
>
>
> --
> Cheers,
> Venkatesh S
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