Forward Error Correction (FEC) Framework Extension to Sliding Window Codes
2018
RFC 6363 describes a framework for using Forward Error Correction
(FEC) codes with applications in public and private IP networks to
provide protection against packet loss. The framework supports
applying FEC to arbitrary packet flows over unreliable transport and
is primarily intended for real-time, or streaming, media. However
FECFRAME as per RFC 6363 is restricted to block FEC codes. The present
document extends FECFRAME to support FEC Codes based on a sliding
encoding window, in addition to Block FEC Codes, in a backward
compatible way. During multicast/broadcast real-time content delivery,
the use of sliding window codes significantly improves robustness in
harsh environments, with less repair traffic and lower FEC-related
added latency.
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