Ring and Ethernet LAN protocols, and
in File Transfer Protocols.
ARQ systems have also been used
widely on shortwave radio to ensure
reliable delivery of data for e.g.
telegrams, called ARQ-E and ARQ-M.
Hybrid FEC/ARQ versions have found
use in mobile phone networks, mobile
broadband (mobile Wi Max) and, more
recently, in LTE wireless networks.
Given the history, it is rather
interesting that “ARQ” has become an
industry buzzword in its own right over
the past several years when associated
with real-time applications such as
streaming video. These days a key focus
of ARQ technology is to design variants
based on the Selective Repeat/Selective
Reject approach to achieve dynamic
and low-latency error correction for
the benefit of real-time applications
such as streaming video and VoIP
while maximizing the throughput.
This type of ARQ technology perfectly
complements UDP, a light weight
real-time protocol based on the
“fire and forget” principle.
In conclusion, UDP in combination
with Selective Repeat/Selective Reject
ARQ is the enabler of reliable video
delivery over the Internet and other
unreliable networks. The ARQ-UDP
pair achieves automatic packet
recovery utilizing variable and
adaptive processing, unlike TCP/IP’s
fixed overhead, thereby fulfilling the
exacting demands of high-quality
DVEO AND DOZER™
DVEO has been awarded a patent for
its ARQ innovation, called DOZER ARQ™.
DOZER ARQ delivers real-time and
file-based video error-free over
unreliable IP network segments,
whether MPEG- 2, H.264 or H.265. It
will automatically recover lost packets,
correct for jitter, de-duplicate, and
DVEO® is a strong and well established supplier
to leading telco TV/OTT and cable operators
around the world. We provide telco-quality
encoders, decoders, transcoders, ad insertion
solutions, playout servers, and packet recovery
technology … all with support for HLS/fMP4
plus optional H.265/HEVC.
Call + 1 858 613-1818 or visit www.dveo.com