[SensorNetArch] MAC + Network Layer Idea

[David Culler]

I would love to discuss this paper at one of our meetings.  For me it 
was the single most important paper at Sensys.

Cheng Tien Ee wrote:

> Hi,
> 
> The paper on Synopsis Diffusion has the interesting idea in which 
> multiple parent motes receive and aggregate data. It is more efficient 
> if the child mote broadcasts once, and its parents listen to and receive 
> that one packet. Currently, the packet header specifies that the packet 
> is either destined for a particular mote, or should be received by every 
> mote in range (broadcast). At this time (I believe) it is not possible 
> to specify a subset of receivers, in this case, the parents. The 
> definition of who the parents are is dependent on the sink mote, that's 
> to say it's dependent on information at the routing layer. Maybe it's a 
> good thing to define a TOS_PARENT_ADDR: when a mote's MAC layer receives 
> that packet, it passes it up to the routing layer to decide if the 
> packet should be accepted (or perhaps that information can be passed to 
> the MAC layer). The network layer needs to check that the mote is indeed 
> the child mote for that particular destination (i.e. extra state needs 
> to be stored).
> 
> Another application would be that of routing along multiple paths (more 
> resilient to any one path failure, brought up by Rodrigo).
> 
> 
> Ee
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