draft-ietf-6lowpan-format-01.txt section 8:
"Given the very limited packet sizes, it is highly desirable
to
integrate layer 2 with layer 3 compression, something typically
not done."
integrate layer 2 with layer 3 compression, something typically
not done."
Actually link-layer assist is quite commonly done - see:
RFC 3242 - RObust Header Compression (ROHC): A Link-Layer Assisted Profile for IP/UDP/RTP
Also, I have a draft written on point-to-multipoint header
compression that you may find useful for this section.
-David Green
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