If it is a concurrent situation it's also likely that 6N1 will receive the BUSY. There is no explicit locking.
Le lun. 19 juin 2017 à 18:13, Xavi Vilajosana Guillen <[email protected]> a écrit : > Hi Remy, > > this is a concurrent situation so both should happen almost at the same > time. The return code to 6N2 is BUSY. > > regards, > X > > 2017-06-19 16:37 GMT+02:00 Remy Leone <[email protected]>: > >> Hello, >> >> I got a question about 6P04: >> >> obj: Check that concurrent transaction cannot request for the same >> cells in the schedule according to draft-ietf-6tisch-6top-protocol-05 >> cfg: star >> ref: IEEE802.15.4-2015, draft-ietf-6tisch-6top-protocol-05 >> pre: >> - The DAGroot sends EBs periodically, with a fast rate (equal to 10 >> sec, according to IEEE802.15.4std), so that the 6N does not need to send >> KAs for keeping synchronization. >> - All EB packets are sent on a single frequency. >> - Power on DAGroot. >> - Wait until all 6N join the DAGroot >> seq: >> - s: >> - The 6N1 sends a 6P ADD request to the DAGroot for 2 slots. >> - The candidate list is {4,5}. >> - s: >> - The 6N2 sends a 6P ADD request to the DAGroot for 2 slots. >> - The candidate list is {4,5}. >> - c: >> - Check that the returned code for the operation is BUSY. >> >> Should we add more details about the timing? Because the check step seems >> very imprecise. Is it the 6N2 that get the busy return code? The 6N1? Do we >> have answers each time a request is sent? >> >> Best regards >> >> Rémy >> >> _______________________________________________ >> 6tisch mailing list >> [email protected] >> https://www.ietf.org/mailman/listinfo/6tisch >> >> > > > -- > Dr. Xavier Vilajosana > Wireless Networks Lab > > *Internet Interdisciplinary Institute (IN3)Professor* > (+34) 646 633 681 <+34%20646%2063%2036%2081> > [email protected] <[email protected]> > http://xvilajosana.org > http://wine.rdi.uoc.edu > Parc Mediterrani de la Tecnologia > Av Carl Friedrich Gauss 5, B3 Building > 08860 Castelldefels (Barcelona). Catalonia. Spain > [image: Universitat Oberta de Catalunya] > >
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