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Verizon Wireless API Will “Turbo” Sessions

Thursday, November 3rd, 2011
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Verizon will publish an application programming interface that could allow mobile consumers to “turbocharge” the network bandwidth their smartphone apps use, presumably for a small additional fee.

“I think one of the things that you could do is guaranteed quality of service,” said Hugh Fletcher, associate director for technology in Verizon’s Product Development and Technology team.

“One of the things that we are right now is very democratic in terms of allocating spectrum and bandwidth to users. And just because you request a high quality of service doesn’t mean you’re gonna get it. [The network] will try to give it to you, but if there’s a lot of congestion, a lot of people using it, it won’t kick people off,” said Fletcher. Verizon API To Give Apps ‘Turbo’

The network optimization API will likely expose attributes like jitter, latency, bandwidth, and priority to app developers, Fletcher said.

Despite expected complaints from some network neutrality advocates, there is a reason such an API might provide clear value to end users. Some of you might be using 3G or 4G networks, using different air interfaces, to use interactive cloud applications. If you do that often enough, on many networks, you will have discovered the experience problem caused by latency.

Where older GPRS or EDGE data networks featured round-trip latencies in the 600 millisecond to 700 msec. range, LTE networks feature round-trip latencies in the 50 msec. range.

One of the important elements of a cloud-delivered application experience is latency performance, even though we most often think of “bandwidth” as being the key “experience” parameter.

Some might say the key benefits will be for gaming apps, but many of us can assure you that other interactive apps, even those not intrinsically dependent on “real time” protocols, can suffer from mobile latency. Latency issues


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Integra Adds Copper Ethernet Access

Wednesday, August 17th, 2011
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Integra Telecom is adding Ethernet-Over-Copper (EoC) and Ethernet-Over-TDM (EoTDM) access methods to its Carrier Ethernet network. The integration of EoC and EoTDM access methods, coupled with Carrier Ethernet standards, provides Integra the ability to deliver transparent Ethernet access to virtually all business in their service area, not only those which can be reached with optical fiber.

Integra’s fiber network consists of 3,000 route miles of metro fiber and 5,000 miles of long-haul fiber that span across 11 western states. The network currently serves over 1600 commercial buildings and, with these additional access methods, Integra can now provide Ethernet access to virtually all business in the markets we serve, according to Bryan Adams, senior product manager, Data Services for Integra.”

Integra Moves Upstream With Carrier Ethernet


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LightSquared Use of Satellite for Backhaul Will Have Latency Implications

Thursday, June 16th, 2011
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One of the issues I still don’t fully understand is the proposed reliance on satellite for backhaul by LightSquared, the proposed new Long Term Evolution service provider in the United States that hopes to use frequencies originally allocated for satellite communications.

LightSquared hopes to use the spectrum to create a national wholesale Long Term Evolution network.

But the reliance on a space segment for backhaul strikes me as less than optimal, given the latency introduced by the lengthy space segment, and the processing that might be required to support real-time services such as gaming, videoconferencing, voice and some enterprise apps.

I am told there are new coding techniques that allow satellite networks to support voice communications where it would have been quite difficult in the past. But I’m not so sure those techniques are cheap enough to deploy in a consumer setting.

A  study by The Rural Mobile and Broadband Alliance (RuMBA) USA points out latency differences between fixed-line and mobile or satellite broadband. “If you ping a typical wireless access point within a home or small office network you should see an average latency of about 2 ms,” says Stephen Cobb, a consultant who prepared the report.  See
http://rumbausa.ning.com/.

“If you are on a cable or DSL connection to the Internet and ping a commercial website like www.bankofamerica.com, you will see latency of about 60 ms. Unfortunately, a satellite Internet connection is likely to have a latency of 600 ms or more when contacting the same
website,” says Cobb.

Latency is not an overwhelming issue for some operations, such as casual Web surfing or even pre-recorded video, if the buffer is big enough. But it strikes me that relying on satellite backhaul as possibly difficult, especially for real-time services.


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