[M4IF Technotes] Error resiliency test tools

[Oztan Harmanci]

Hi. I have a couple of questions about error resiliency simulations. Any help is greatly appreciated.
It appears that the roots of the error resiliency tests in the VM go back to N0999 -'95 Tokyo paper. According to the test results -for example- resync marker spacing is advised under different channel conditions and bit rates. Channel is simulated using a "NTT DoCoMo" originated software, and if I didnt understand wrong it uses a two state markov model to simulate the bit errors. 
Does anyone know where I can find this "NTT DoCoMo" software and whether this software is applicable to 3GPP1/2 network simulations(cdma2000/wcdma type networks)?
There is a similar channel simulation testing software for JVT, namely VCEG-N37. The problem with N37 is that it does not allow any errored packets to be passed to upper levels. In other words, bit errors are not allowed. This confuses me: Assuming that N37 software is a valid 3G simulation tool, and that N37 can be changed to simulate MPEG4 transmissions, what is the point of having bit error resiliency if there wont be any? Does that mean MPEG4's bit based error resiliency tools are not needed in 3G networks? This means RVLC and data partitioning become useless! Am I missing something here?
Thanks
Oztan
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