Re: [Tm-rid] RAA/HDA - drawing the line in 32 bits

["Card, Stu" <[e-mail]>]

I think we need to assume that many commercial UAS operators will use 1
HHIT per flight. Given the large number of UAS & frequency of flights, this
will rapidly consume enough of even a large space that collisions will
rise. So HHITs will need lifetimes & to be reclaimed for re-use.

I know many will pillory me for saying this: maybe claim a HHIT by
appending it in a blinded form to a blockchain? For blinding, I'm thinking
back before Satoshi Nakamoto, to David Chaum's & Stefan Brands' work...
also more recently Jan Camenisch & Anna Lyskayana...

On Thu, Nov 21, 2019, 5:09 PM Robert Moskowitz <[e-mail]>
wrote:

>
>
> On 11/21/19 3:16 PM, Tero Kivinen wrote:
>
> Robert Moskowitz writes:
>
> In draft-moskowitz-hip-hierarchical-hit-01.txt, I use 14 bits (16,384)
> for the RAA space and 18 bits (262,144) for HDA within each RAA.  Seems
> reasonable enough for me.  Good as any guess about the future.
>
> Tero Kivinen suggested a soft separation with the HDA in little endian
> order.  This way we might have time to figure out where we need more,
> RAAs or HDAs.
>
> Sounds interesting, but I see potential problem(s) if one RAA really
> runs up its number of HDAs and thus limits the number of RAAs in total
> as a result.
>
>
> I think we should be strict hard limit for RAAs for how many HDAs it
> can before it needs to come back for asking changing. For example say
> 12-bits for HDAs and if it looks like there are going to be multiple
> RAAs running out of 12-bit space, then we can expand it to 16-bit etc.
>
> If it just one RAA getting very large, we can of course give him
> 2nd RAA number.
>
>
> Another item to toss into the mix is an HDA requesting a second or so
> number.  After registering so many HHITs, the collision rate becomes
> 'unacceptable' and the move to a new HDA number for new registrations.
>
> How many deliveries might UPS make a day via UAs?  A new HHIT per delivery
> or only per day?  This could run through a lot of HHITs.
>
> Will some HDAs deprecate expired HHITs and allow reuse or keep the numbers
> around even after they are released by the owner?
>
> All policy issues that will impact the hierarchy space.
>
>
>
> The IPv4 addresses just showed that we can never get the split right
> on the first time...
>
>
> Oh, and the 32bit space will be represented in DNS as nibbles.
>
>
> --
> Robert Moskowitz
> Owner
> HTT Consulting
> C:      248-219-2059
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>
> There's no limit to what can be accomplished if it doesn't matter who gets
> the credit
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