Technical Summary
RFC 6363 describes a framework for using Forward Error Correction
(FEC) codes 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.
Working Group Summary
RFC 6363 was a product of the former FECFRAME working group,
which closed several years ago. FECFRAME was in the TSV area.
When several original FECFRAME participants proposed
updates/extensions to support new types of codes (with benefits
for some real world applications), between the Area Directors
and the TSVWG, it was agreed that the work should be done in
TSVWG, and two documents including this one were adopted.
Several FECFRAME participants are either authors/editors listed
on the documents, or participated in reviews. Other than this
history, there were no other significant issues or events of interest
in the working group process on this document.
Document Quality
There have been implementations. The implementations
were reported to the working group, and the documents
benefited from the implementation and testing experience.
Personnel
The document shepherd is Wesley Eddy (wes@mti-systems.com),
and the responsible AD is Magnus Westerlund.