[Tinyos-help] Link layer in CTP

[Philip Levis]

On Oct 2, 2008, at 10:15 PM, Hui Kang wrote:

> I think it has been done by  calling (ackPending && !call
> PacketAcknowledgements.wasAcked(msg)) ?
> But why not using PackLinkC, which also provides link layer  
> retransmission?

Because CTP wants to know when link-layer transmissions fail, so it  
can quickly change its route if need be. So it does retransmissions at  
the network layer.

Phil