[Tinyos-help] Lost Messages in TOSSIM

[Pela]

kotay at csail.mit.edu wrote:
> Hi,
> 
> I'm using TOSSIM (under TinyViz) to simulate a group of 9 
> nodes.  The radio model is 100m disk and the nodes are on 
> a 10m grid so everyone can hear everyone else.  Using this 
> radio model there should be no packet loss, however I am 
> not receiving some packets that are transmitted.  The log 
> file indicates that they are transmitted, but I bever see 
> the debug message in the .receive event handler that would 
> indicate it has been received.  Furthermore, when a 
> message is lost in this way it isn't received by any of 
> the other nodes.  Has anyone seen this before?  I want to 
> get my comm algorithm working with no packet loss before 
> evaluating it on real motes, but this TOSSIM packet loss 
> is making it difficult...
> 
loss can be caused by packet collisions and the hidden terminal problem

-- 
Pela