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Abstract:
This document describes a Generalized Object Encoding (GOE) FEC
Scheme for the protection of one or multiple objects, in the context
of a Content Delivery Protocol (CDP) like FLUTE/ALC, FCAST/ALC or
FCAST/NORM. Unlike [RFC5052], the GOE approach [GOE] decouples the
definition of Generalized Objects over which FEC encoding takes place
homogeneously, from the natural source object boundaries. This
separation enables either an Unequal Erasure Protection (UEP) of
different portions of a given source object, or an efficient and
global protection of a set of potentially small files, depending on
the way the Generalized Objects are defined.
The present document defines the GOE LDPC-Staircase FEC Scheme, i.e.,
the GOE version of the FEC Encoding ID 3 (LDPC-Staircase) defined in
[RFC5170] with the further restriction that the number of encoding
symbols per group (i.e., the number of symbols sent in the same
packet) MUST be equal to 1 (G=1). This document does not change the
LDPC-Staircase code definition, and therefore it inherits most of
[RFC5170]. It only modifies the FEC Payload ID and FEC OTI, i.e., it
addresses the problem of UEP and efficient file bundle protection by
means of pure signaling approach.
Authors:
Vincent Roca <vincent.roca@inria.fr>
Aline Roumy <aline.roumy@inria.fr>
Bessem Sayadi <bessem.sayadi@alcatel-lucent.com>
(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid)
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