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| • |
flow_id
(4 bits): This field identifies the source packet flow to which FEC
protection is applied.
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| • |
length
(12 bits): This field indicates the number of source FEC payload ID
involved in a source FEC
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payload
MIU.
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Initial_seq_number
(16 bits): This field indicates the sequence number of the starting source
packet
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with
respect to flow_id of a source block. The starting source packet belongs to
the source packet
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flow
identified by flow_id field.
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Source_FEC_Payload_ID
(Variable Length): This field is identical to “Source FEC Payload ID”
defined
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in
draft-ietf-fecframe-framework-05. The field size is dependent upon the FEC
scheme identified by
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fec_id
field in FEC payload header. This field in conjunction with
initial_seq_number determines
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which
source block a FEC source packet belongs to and the position of a FEC
source packet in the
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FEC
source block.
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