Re: [Drip] ASTM on UDP/IP - an (im)possibility

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

Now you're talking! :-)

Yes, UDP/IP encapsulation of Broadcast RID messages, over media other than
Bluetooth, is an attractive possibility, which goes beyond but does not
conflict with ASTM F3411.

Also, UDP/IP, TCP/IP, HTTPS/TCP/IP, etc. encapsulations of Broadcast RID
message structures (not merely data dictionary elements) as a means of
transporting Network RID, comprise another attractive possibility, which
probably conflicts with the initial ASTM F3411-19 version but there will be
future revisions that we may be able to influence.


On Wed, Aug 5, 2020 at 10:36 AM Alexandre Petrescu <
[e-mail]> wrote:

>
>
>
> Le 05/08/2020 à 16:07, Robert Moskowitz a écrit :
> [...]
> > But as Stu just said, we deal with the hand dealt.  We cannot change the
> > ASTM messages from the outside, only work within them and then add other
> > communications to the UAS ecosystem.
>
> Maybe the UAS ecosystem also looks at the use of IP in the future.  Or
> maybe not.
>
> Maybe UAS ecosystem would consider to carry ASTM messages as UDP payload
> on IP?  Maybe request new port number from IANA for DRIP, let's say next
> in sequence from
>
> https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xhtml
>
> An ASTM message on UDP/IP could look like below.
> If carried over Bluetooth it would add a preceding header different than
> when carried over 802.15.16t (the 802.16 for NB-IoT).
>
>
>     IPv6 Header
>     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>     |Version| Traffic Class |           Flow Label                  |
>     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>     |         Payload Length        |  Next Header  |   Hop Limit   |
>     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>     |                                                               |
>     +                                                               +
>     |                                                               |
>     +                         Source Address                        +
>     |                                                               |
>     +                                                               +
>     |                                                               |
>     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>     |                                                               |
>     +                                                               +
>     |                                                               |
>     +                      Destination Address                      +
>     |                                                               |
>     +                                                               +
>     |                                                               |
>     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>
>     UDP Header
>                  0      7 8     15 16    23 24    31
>                   +--------+--------+--------+--------+
>                   |     Source      |   Destination   |
>                   |      Port       |      Port       |
>                   +--------+--------+--------+--------+
>                   |                 |                 |
>                   |     Length      |    Checksum     |
>                   +--------+--------+--------+--------+
>
>     ASTM message
>     0                   1                   2                   3
>     0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
>     +---------------+-----------------------------------------------+
>     |  Auth Header  |                                               |
>     +---------------+  ASTM Authentication Headers  +---------------+
>     |                                               |               |
>     +-----------------------------------------------+               |
>     |                                                               |
>     |                                                               |
>     |                                                               |
>     |                Authentication Data / Signature                |
>     |                                                               |
>     |                                                               |
>     |                                                               |
>     +---------------------------------------------------------------+
>
> Alex
>
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