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OK, I'll take the bait...
I would say, yes, sharing a geo database is a form
of coordination if that data is used to decide what other spectrum users are
likely to be in the spectrum. I'm not saying I think it is a good
coexistence coordination mechanism, but it is a coordination
mechanism.
I would say depending on a database requires a
control channel, to access the database. Unless you figure that
every device has the database burned into its local memory...but then, how would
it be kept up to date? Oh, that would require a control channel....
I am still just not getting this: how can a
wireless devices access the database at all? Seems a self referential loop: it
needs to access the medium to get to the database to figure out if it is OK to
access the medium. I don't get that, but then, I'm new to this WS
stuff. So here's a shot at a generalized definition:
coordinated coexistence: Actively exchanging
information between systems so that spectrum access can be coordinated to assure
coexistence.
There you go, an opening shot...fire
away!
-Ben
================================
Benjamin A.
Rolfe
Blind Creek Associates
"Even a fish could stay out of trouble if it could
learn to keep its mouth shut" - Anonymous fisherman
----- Original Message -----
Sent: Wednesday, August 12, 2009 2:27
PM
Subject: Re: [802.19] Mariana's Straw
Poll
I suggest we add "coordinated" to the list of
terms we need to define before we get too far down the road. Is sharing
a geolocation database considered coordination, or is a "control channel"
required?
Rich
----- Original Message -----
Sent: Wednesday, August 12, 2009 4:11
PM
Subject: Re: [802.19] Mariana's Straw
Poll
Those two questions beg some additional
comments:
The second asks TWO questions: should a
coordination protocol be developed, and if so, centralized or
distributed?
The my answer is "yes" and
"distributed".
It seems to me the definition of WS is
coordinated access. But not all devices will be capable of common
signaling (i.e. able to exchange information with each other). This may
complicate coexistence a bit :0). A centralized solution assumes all
participants can exchange information. A distributed approach can take
advantage of shared information, but also can provide independent means.
Seems like all the focus is already on the centralized approach, which
doesn't seem to account for all potential spectrum users, so a good thing
for 802 to provide is an alternative distributed coexistence strategy that
fills the 'gap' so to speak.
Just a thought....probably redundant, but
offered FWIW.
-Ben
================================
Benjamin A.
Rolfe
Blind Creek Associates
----- Original Message -----
Sent: Wednesday, August 12, 2009
11:03 AM
Subject: [802.19] Mariana's Straw
Poll
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