To view this page ensure that Adobe Flash Player version 11.1.0 or greater is installed.
Back to Basics:
Networks Answers provided
by Erwan Gasc,
CEO of AVIWEST
1. What advantage do 3G/4G cellular wireless networks
provide to broadcasters over satellite networks?
For many years, satellite was the primary approach for real-
time video delivery within the broadcast industry. That changed
with the explosion of the Internet and second-screen devices
like smartphones and tablets. As a global 3G and 4G cellular
wireless network infrastructure was built to address the growing
consumer demand for voice and data services, these networks
have emerged as the ideal method for sending live video signals
because they are more flexible, affordable, and easy to use
compared with satellite.
Prior to 3G/4G networks, delivering live news coverage over
satellite was far more expensive. In addition, setting up and
deploying satellite vans is much more complex and time-
consuming. Now that 3G/4G cellular wireless networks have been
deployed all over the world, broadcasters can deliver the same
amount of content, with the same video quality, at a fraction of the
cost of satellite.
2. Describe the development and current status of
3G/4G cellular wireless networks around the world.
3G/4G cellular wireless networks are available in all corners of the
world. When broadcasters are reporting on a news story in a small
town, they can easily tap into 3G/4G networks in the area and find
the bandwidth necessary to deliver high-quality video coverage.
This is important because people today want to be abreast of
news as and when it happens. As a broadcaster, if you’re not
able to provide timely news coverage, you will lose viewers and
ultimately advertising dollars.
When AVIWEST launched its first video hybrid contribution
systems in 2009, there were only 3G networks in existence.
Since 3G networks were initially designed to support voice
services, the bandwidth was limited; therefore, the quality of
video that broadcasters could send was poor. AVIWEST saw that
broadcasters needed a way to improve the video quality. That’s
why we created our DMNG (Digital Mobile News Gathering) system,
which can detect and aggregate (bonding together) multiple IP-based
networks (e.g., 3G, 4G, WiMax, WiFi, Ethernet, and satellite). By enabling
broadcasters to take advantage of every IP network in their immediate vicinity as and when they
become available, the DMNG system dramatically improves video quality for live television streams.
Since that time, 4G networks have popped up all over the world. 4G networks offer a much larger
spectrum of bandwidth, making them perfect for live video applications.
64 | KITPLUS - THE TV-BAY MAGAZINE: ISSUE 99 MARCH 2015