Thomas Watteyne <thomas.watte...@inria.fr> writes: > You raise a valid point. There are a couple of points, though, that make an > "Absolute Slot Number" more favorable compared to an "Absolute Slotframe > Number": > - if you schedule multiple cells between two nodes in a single slotframe, > you want those different transmissions to happen at a different frequency
Although you could construct the schedule so that the nodes have different channel offsets for the different slots within the schedule. > - ASN is used to construct a nonce when securing link-layer frames. > Security is such that we never want to re-use the same nonce. Although you could construct the nonce to be (ASFN * nSlots + slotOffset). And you need to do a construction like that to make sure that different nodes with different channel offsets during the same slot do not use the same nonce. I suspect the main reason is that several slotframe schedules of different lengths can be active at the same time in one network. Keeping a separate ASFN for each schedule would require a lot of work. Dale _______________________________________________ 6tisch mailing list 6tisch@ietf.org https://www.ietf.org/mailman/listinfo/6tisch
