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CONNECTED Back to Basics: Cellular Wireless 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