Hi Michel and Nicola,
I think Michel's idea is interesting. But, according to my understanding, the
Frame Pending setting just means there is frame following, does not mean that
the current bandwidth provided by TSCH schedule, including hard cells and soft
cells, is not enough to convey those frames, and then needs more bandwidth
(e.g. additional soft cells) . Right? Do I miss something?
ThanksQin
On Wednesday, July 1, 2015 4:03 AM, Nicola Accettura
<[email protected]> wrote:
Hi Michel,
your proposal is very interesting.
However, OTF does not allocate cells directly: it just computes the estimated
number of cells to add or delete into the schedule, and then sends this
information to 6top. 6top is then in charge of negotiating cells among
neighbors, and meybe perform the scheme you are proposing.
So, your proposal seems fitting more the 6top-to-6top communication.
Am I missing something? What others think about?
Sincerely
Nicola
2015-06-30 8:13 GMT-07:00 Michel Veillette <[email protected]>:
Hi Diego It’s my first reading of the “6TiSCH On-the-Fly Scheduling” (and I’m
not completely done yet) and I wandering if the concept of on the fly, in a
single exchange, temporary allocation of a soft cell have already been
discussed. For example, a node can use the Frame Pending subfield (IEEE
802.15.4-2006 section 7.2.1.1.3) to indicate the presence of packets ready to
be transmitted. Based on that knowledge, the target may add an IE in an
enhanced acknowledgment to allocate a temporary soft cell (e.g. single cell).
Each subsequent transmission may further re-allocate a temporary soft cell.
It’s important to note that the default delay for a TSCH Acknowledgment is 1ms
(macTsTxAckDelay) which seem sufficient for the processing of this new IE.
This scheme is very reactive and may help dealing with non-predictable
communication patterns.What do you things?
| | Michel Veillette
System Architecture DirectorTrilliant Inc.
Tel: 450-375-0556 ext. 237
[email protected] |
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