Dear RoHC ers,
I am facing ambiguity
regarding handling of Mode Cancellation for IR & IR-Dyn Packets in
Profile -0x0004 (RFC 3843).
RFC 3843 says:
The
Mode parameter for the value mode = 0 (packet types UOR-2, IR and IR-DYN)
is redefined
to
allow the compressor to decline a mode transition requested by the
decompressor:
Mode:
Compression mode. 0 = (C)ancel Mode Transition
Upon receiving the Mode parameter set to '0',
the decompressor MUST stay in
its current mode of
operation and
SHOULD refrain from sending
further mode transition requests for the declined mode for a certain amount of
time.
Q.1) How do we communicate mode
parameter (i.e, '0' for Mode cancellation) to Decompressor for IR &
IR-Dyn Packets?
RFC 3095/ 3843 has
not defined any field indicating 'Mode' in IR /IR-Dyn Packet formats for
Profile-0x0004.
But UOR-2 Packet
can communicate mode value in the form of
Extension-3.
Q.2) Is this interpretation
correct?
Can we define a
field for mode parameter in Dynamic chain (in IR & IR-Dyn
packets) and communicate the mode value
to
De-compressor, by indicating it as '0' for handling of Mode
Cancellation.
Will the above
implementation give any impact in
Interoperabilty?
Pls share your valuble thoughts regarding
the same.
Thanks,
Pradeep.
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