Hi Pascal, Thomas, all inline too (see changes in *foo*)
regards, X 2016-06-03 20:41 GMT+02:00 Thomas Watteyne <[email protected]>: > Pascal, > > Some typos and suggestions below. > > 4.2.2. Scheduling Functions and the 6P Protocol (6P) > > In the case of soft cells, the cell management entity that controls > the dynamic attribution of cells to adapt to *varying* > rate flows *in the network* is called Scheduling Function (SF). There > may be > multiple SFs, each implementing a different policy to adapt to varying > network traffic. The 6TiSCH 6top Scheduling Function Zero (SF0) > [I-D.ietf-6tisch-6top-sf0] provides a simple scheduling function that > can be used by default by devices that support dynamic scheduling of > soft cells. > > The SF is logically divided in a bandwidth adaptation policy > which is *independent* to the particular *mechanism* used to obtain and > release bandwidth, > TW> I don't understand the previous sentence > and a underlying service sublayer which identifies > XV> Only identifies? For me we need to stress the difference between 6top protocol and this sublayer > the > appropriate TSCH cells to use. > > +------------------------+ +------------------------+ > | Scheduling Function | | Scheduling Function | > | Bandwidth adaptation | | Bandwidth adaptation | > +------------------------+ +------------------------+ > | Scheduling Function | | Scheduling Function | > | TSCH cell mapping | | TSCH cell mapping | > +------------------------+ +------------------------+ > | 6top cells negotiation | <- 6P -> | 6top cells negotiation | > +------------------------+ +------------------------+ > > > Figure 6: SF/6P stack in 6top > > The SF relies on the 6top Protocol (6P) > [I-D.ietf-6tisch-6top-protocol] to negotiate the cells between > neighbor nodes. It > may be for instance that a node wants to use a particular time slot > that is free in its schedule, but which is already in use by > its neighbor. The 6P protocol enables the neighbor nodes to find > an agreement on which cells to use. > > > On Friday, June 3, 2016, Pascal Thubert (pthubert) <[email protected]> > wrote: > >> Dear all: >> >> As discussed at the last Interim, please find proposed text in the 6TiSCH >> architecture below. >> >> What do you think? >> >> Pascal >> >> 4.2.2. Scheduling Functions and the 6P protocol >> >> In the case of soft cells, the cell management entity that controls >> the dynamic attribution of cells to adapt to the dynamics of variable >> rate flows is called a Scheduling Function (SF). There may be >> multiple SFs with more or less aggressive reaction to the dynamics of >> the network. The 6TiSCH 6top Scheduling Function Zero (SF0) >> [I-D.ietf-6tisch-6top-sf0] provides a simple scheduling function that >> can be used by default by devices that support dynamic scheduling of >> soft cells. >> >> The SF is logically divided in an abstract bandwidth adaptation logic >> that is abstract to the particular technology used to obtain and >> release bandwidth, and a underlying service sublayer that maps those >> needs in the actual technology, which means identifying the >> appropriate cells in the context of TSCH. >> >> +------------------------+ +------------------------+ >> | Scheduling Function | | Scheduling Function | >> | Bandwidth adaptation | | Bandwidth adaptation | >> +------------------------+ +------------------------+ >> | Scheduling Function | | Scheduling Function | >> | TSCH mapping to cells | | TSCH mapping to cells | >> +------------------------+ +------------------------+ >> | 6top cells negotiation | <- 6P -> | 6top cells negotiation | >> +------------------------+ +------------------------+ >> >> >> Figure 6: SF/6P stack in 6top >> >> The SF relies on 6top services that implement the 6top Protocol (6P) >> [I-D.ietf-6tisch-6top-protocol] to negotiate the precise cells that >> will be allocated or freed based on the schedules of the peer. It >> may be for instance that a peer wants to use a particular time slot >> that is free in its schedule, but that timeslot is already in use by >> the other peer for a communication with a third party on a different >> cell. The 6P protocol enables the peers to find an agreement in a >> transactional manner that ensures the final consistency of the nodes >> state. >> >> _______________________________________________ >> 6tisch mailing list >> [email protected] >> https://www.ietf.org/mailman/listinfo/6tisch >> > > > -- > _______________________________________ > > Thomas Watteyne, PhD > Research Scientist & Innovator, Inria > Sr Networking Design Eng, Linear Tech > Founder & co-lead, UC Berkeley OpenWSN > Co-chair, IETF 6TiSCH > > www.thomaswatteyne.com > _______________________________________ > > > _______________________________________________ > 6tisch mailing list > [email protected] > https://www.ietf.org/mailman/listinfo/6tisch > >
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