On Feb 17, 2011, at 11:41 PM, M.Baris Demiray wrote:
>> Do they begin with the 16-bit synchronization sequence, or is that stripped
>> off, so that they begin with the header field? Do data PDUs include the CRC
>> at the end, or is that stripped off?
>
> 16-bit synchronization sequence is sent over-the-air for all the types
> of DPDUs so it's not stripped off. And for data PDUs, yes, they
> include CRC at the end. So it's like below for data PDUs,
>
> | SYNC | HEADER | HEADER_CRC | DATA | DATA_CRC |
>
> And like below for control frames (namely DPDU types 1, 3, 5, 6, and 15),
>
> | SYNC | HEADER | HEADER_CRC |
OK, so would a complete and accurate description be
D_PDUs as described by NATO standard STANAG 5066, starting
with the synchronization sequence, and including both header and data CRCs.
and leave it up to those who can access STANAG 5066 to read it (and possibly
provide a link to the old unclassified version)?
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