Streaming to Mobile Devices
Trends in Technology, April 2010
Putting it all together, end to end
Let's take a look now at how a connection is made end-to-end when an end-user clicks on your application.
For starters, part of what the application developer does is to code the unique URL you want to use for a particular stream. Obviously a different URL can be used on the basis of the platform type.
After this URL is resolved, a redirect server is reached. In addition to redirecting you to the yet another URL, this server likely takes note of the fact that you requested the service. (You've just become a statistic.) This second URL points you to the CDN.
At the CDN, your request reaches a DNS that does a few things:
Once the CDN's DNS comes up with an answer, it resolves the requested URL into an IP address for the user to attach to. The last mile connection is now made -- via unicast. In the case of mobile devices, the physical layer is done via two radio links: one from the cell site to you, and of course the other from you back to the cell site.
The number of of smart phone users keeps increasing, and there's no end in sight. I for one don't believe streaming will ever supplant broadcast radio, but it is abundantly clear that streaming is growing in importance in our business. If you haven't already availed yourself to the new crop of Internet listeners, now is really the time. It's still early in the game, and definitely not too late to get in.
Irwin is transmission systems supervisor for Clear Channel NYC and chief engineer of WKTU, New York. Contact him at firstname.lastname@example.org.
Acceptable Use Policy blog comments powered by Disqus
[an error occurred while processing this directive]
Today in Radio History
The history of radio broadcasting extends beyond the work of a few famous inventors.
Read each issue online in our Digital Edition Format in your Web browser.
EAS Information More on EAS
The feed provides feeds for all US states and territories.
Need a calendar for your computer desktop? Use one of ours.
Information from manufacturers and associations about industry news, products, technology and business announcements.
This high-visibility and high-traffic area got the full acoustic treatment.
Browse Back Issues[an error occurred while processing this directive]
Also in the May Issue
- Remote Access and Site Connectivity: Wireless
- Standards of FM Allocation and Interference
- Side by Side: Mic Processors
- Field Report: Deva Broadcast DB4004
- Field Report: APT WorldCast Systems Horizon NextGen
- New Products
- 20 Years of Radio magazine: May 1994