[Tinyos-help] PAcket loss in TOSSIM

[Yi-Tao Wang]

Make sure you have links between the sender and all the receivers.

David

On Tue, Apr 1, 2008 at 10:24 AM, Razvan Musaloiu-E. <razvanm at cs.jhu.edu> wrote:
> Hi!
>
>  On Tue, 1 Apr 2008, prashan wanigasekara wrote:
>
>  > Hi everyone,
>  >
>  > I am using tinyos-2.x and compiling for a micaz platform in TOSSIM. I have a
>  > 8 node topology and when I am running my program there is a lot of
>  > broadcasting. But there seems to be heavy packet loss in TOSSIM. Is there a
>  > way to have no packet loss???
>  >
>  > 1. I thought in simulations we can have ideal to near-ideal conditions
>  > ......thus is there a noise.txt model I can use off the shelf that would
>  > give me this(no packet loss).
>  >
>  > 2. I have a very simple scenario. There are 8 nodes. Node 1 at time t=0
>  > broadcasts a message. But only a few nodes out of 7 get the message. In this
>  > case there cant be any collisions cause there is only 1 transmitter. Thus I
>  > am surprised that there is packet loss. Is there a way to get around this?
>
>  Even with perfect links (no noise) you can still have losses due to
>  collisions. If only node 1 sends a packet at t=0 and it has links with all
>  the other 7 nodes then all of them should receive them. If all the 7 also
>  try to send a packet at t=0 you should see some losses.
>
>  --
>  Razvan ME
>
>  > I woudl greatly appreciate your help.
>  >
>  > prashan
>  >
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