September 27, 2013
July 30, 2013
85 mobile operators were selected and surveyed globally, including a good cross-section from both developed and emerging markets. The respondents were screened to ensure that they all had a stake in microwave-specific backhaul: 93 percent had deployed microwave and the rest had plans to deploy it. In fact, 45 percent were categorized as heavy microwave users—those where more than 50 percent of their cell sites were served by microwave backhaul.
So we asked this select group, which consisted of mostly planners, engineers and strategy leaders, “What is the biggest challenge your company faces regarding the future development and deployment of microwave backhaul?”
The results were interesting in that “total cost of ownership” actually eclipsed “increasing capacity” as their biggest challenge, as shown in the pie chart of survey responses below.
July 18, 2013
Frank Sinatra, “Old Blue Eyes,” would have been the perfect pitchman for Aviat Networks. From Los Angeles to Chicago to New York, Sinatra’s many hit songs were inspired by the big cities of America. Since the time Sinatra began his illustrious singing career, Aviat Networks (formerly Harris Microwave Communications Division) has been setting the bar high for superior performance, wireless microwave communication across the United States, from sea to shining sea.
With big cities come big landmarks. You know that enormous “HOLLYWOOD” sign on Mt. Lee in Los Angeles? Aviat is there.
And how about the panoramic Golden Gate Bridge in San Francisco? Yes, Aviat is there, too. Aviat Networks is “Designed, Built and Supported in the USA,” as well as proudly deployed among the most prominent and historic locales in America.
You can find Aviat microwave on the side of beautiful Niagara Falls, as well as scraping the sky on the Sears Tower (now Willis Tower) in Chicago—that “toddling town.”
Right through the heart of “New York, New York,” Aviat radios are installed within the electric ambiance of Times Square and atop the soaring Empire State Building.
Even outside the urban corridors of America, Aviat is there. For example, Aviat equipment is deployed at the Hoover Dam in the Black Canyon along the Colorado River.
You may say “so what?” Well, the beauty of it all is that while you’re taking in everything the USA has to offer in its rich collection of historic landmarks, you’ve never noticed the technology that helped shape modern telecommunications networks is operating reliably, flawlessly right at your side.
Aviat Networks continues to take flight in new locations across the globe, and we are doing it the American way!
Manager, Solutions Marketing
May 17, 2013
Wireless backhaul operators, both mobile phone networks and others carrying dedicated traffic, face the constant issue of maximizing the functionality of their systems.
In the emerging markets around the world, the pressure can be most intense. Wireless network reliability, availability and capacity all need to be increased. Customer expectations are on the rise, and operators must take the appropriate steps to meet and exceed them.
In working with MTN Ghana, Aviat Networks recently completed an implementation to increase network visibility (i.e., intelligence) by close to one-third. Aviat’s professional services experts designed the mobile operator’s backhaul links for high capacity and resiliency. Using ProVision, Aviat’s leading network management software, MTN Ghana can now administer its wireless backhaul efficiently and effectively with a reduced level of manpower.
April 5, 2013
The year was 1980. The Americans beat the Russians for the Olympic gold medal in hockey. John Lennon of The Beatles was killed. Mount St. Helens erupted. The Soviet Union had just invaded Afghanistan. Ronald Reagan was elected president. The hostages were still in Iran. People asked themselves, “Who shot J.R.?” and caught Pac-Man fever. Voyager 1 flew by Saturn and left the solar system. The Empire struck back. John Belushi and Dan Aykroyd were on a “mission from God.” The Clash came calling on London. Led Zeppelin broke up. And Farinon Electric, Aviat Networks’ direct predecessor, put into service a series of analog microwave radio hops for the Canadian province of Nova Scotia’s Department of Natural Resources. The radios in question were the SS2000 model.
The province used them to carry government data traffic for firefighters and police, where data bits were stuffed into 4kHz voice channels. Remarkably, 33 years later, three hops of these SS2000 radios are still in operation, making these, quite possibly, the world’s oldest continuously in-service microwave links.Farinon SS2000 analog microwave radio transmitters (but not entire units) were available for sale on eBay as recently as 2011! How’s that for longevity?!
Offering 120, 300 or 600 voice channels on the old 2GHz band, SS2000 radios were considered cutting-edge technology at the time—check out their cool retro-style data sheet—and highly reliable with their ability to provide microwave links despite the challenging weather and difficult propagation conditions of Nova Scotia—snow, ice, sleet, fog…they have it all! As proof, four other SS2000 radio hops were recently decommissioned and found to still be working up to spec as per the original, accepted level of performance. Then there was someone selling SS2000 radios on eBay in 2011!
But we challenge you, our loyal blog readers, to tell us of any even older microwave links that have been in operation for more than 33 years. So if you have an Aviat Networks link, or that from a predecessor company, which is still operating today and was installed before 1980, please comment! We want to hear from you!
February 8, 2013
Few could disagree that aviation remains one of the most vital global industries, due to its capability for transporting goods, people and even ideas thousands of miles in a span of a few hours. Fewer still could argue that aviation is also one of the industries most fraught with danger from equipment failure and human error. Safety is paramount, and clear, continuous communications between airplanes and ground control personnel is at the top of the list for maintaining safety.
What follows is a case study of how an airport traffic solutions provider, Airways New Zealand, expanded airport communications at Auckland International Airport to increase safety with help from Aviat Networks. Together, they implemented five-nines availability microwave radio solutions and futureproof element management system software that will meet the airport’s communications needs for at least the next 10 to 15 years. And all while implementing the network, no disruptions occurred to ongoing airport operations. Overall, the mission-critical communications system of the airport has been enhanced to a failsafe level of readiness.
September 28, 2012
Carrier Ethernet (CE) transport networks are growing in both scale and complexity, requiring both vendors and operators to deliver solutions to sustain their growth. To help address this, Aviat Networks recently participated in the European Advanced Networking Testing Center’s (EANTC) annual multi-vendor interoperability testing event to validate several aspects of scaling CE networks, among other things.
Increasing CE network sizes increase the complexity of management—especially from a services perspective—when CE services span multiple network domains. The ability to partition management domains and effectively manage alarms that accurately identify and propagate notification of network faults, dramatically speeds up the fault isolation and resolution process across large networks. Utilizing and effectively implementing “Hierarchical Service OAM” in growing CE networks is valuable to overcoming this challenge and was a key area of the recent interoperability testing.
Another critical aspect of growth is dealing with multi-technology—not just multi-vendor—interoperability. As CE networks scale, there is an increasing mix of Ethernet switching, MPLS and, most recently, MPLS-TP internetworking emerging. One potentially complex area that was also tested was validating the operation and survivability of intersecting Ethernet and MPLS-TP rings in a multi-homed topology. The “ERPSv2 and VPLS Interworking” test validated that standards-based G.8032 Ethernet protected rings and MPLS-TP VPLS rings can interoperate, or more significantly “co-operate,” to allow complex multi-technology networks to deliver reliable end-to-end services.
To learn about these aspects of scaling and dealing with complex CE networks check out the EANTC white paper for more details.
Sr. Product and Solutions Marketing Manager
August 3, 2012
In the past, we have seen microwave radio installations at zoos, auto races, and on mountaintops reached by funicular and other one-of-a-kind implementations. This time, one of our partners, MIMP Connecting Solutions of South Australia, is in the process of completing an installation that is at the same time completely novel and tremendously important in the struggle to preserve indigenous cultures.
Currently, MIMP is rolling out microwave backhaul for the Australia Pacific LNG (APLNG) liquefied natural gas joint venture in Queensland, Australia. However, in Queensland, and other parts of Australia, legislation in recent years such as the Aboriginal Cultural Heritage Act 2003 has sought to preserve culturally significant Aboriginal places from development. This impacts the installation of the APLNG microwave backhaul network because conventional radio sites cannot be constructed under the auspices of this legislation on protected Aboriginal land.
July 17, 2012
Do not be Alarmed by this latest video in the Radio Head Technology Series (complimentary registration). For the insider’s perspective on Hot Standby, we will not keep you waiting. Dick Laine, Aviat Networks’ principal engineer, has many informed views on Diversity and relates them in his familiar relaxed presentation style.
All puns aside, Dick covers the multitude of options available in Diversity Schemes (and all their acronyms!). Plus, there is a lot to know about the differences in asymmetrical splitters for digital radios and their analog predecessors. Turns out there is no point in using symmetrical splitters in digital microwave radios. Even a heavily asymmetrical split provides as much protection as a symmetrical split but it avoids 2-3 dB in fade margin losses, providing significantly more uptime.
And if there is anything you need to know about Alarms, Dick takes a fine-toothed comb to the subject and teases out the details, providing context for the strategy of how they function in keeping your wireless communication network online. Dick will also tell you how improvement in digital radios has led to large gains in recovery time when radios in a Hot Standby arrangement are switched and quadrature relock can now essentially be avoided. On errorless switching, although it has greatly benefitted microwave radio usage, Dick will tell you the importance of early warning alarms to it.
So make no mistake, Dick is your information source for all things microwave radio—wrap your head around it!
June 12, 2012
Link between Honduras and Belize Crosses Water and Land
Last year I wrote about the world’s longest all-IP microwave link, stretching 193 km over the Atlantic Ocean in Honduras. Aviat Networks and Telecomunicaciones y Sistemas S.A. (TELSSA) designed and implemented this link together. This year, Aviat Networks and TELSSA again worked together to build another link and achieve another record—an Eclipse microwave link between Honduras and Belize that crosses 75 km of the Atlantic Ocean and 105 km of rugged terrain for a total path length of 180 km. This is a new world record for a hybrid diversity microwave link!
After the success of implementing the 193km link over water, Aviat Networks and TELSSA were eager to meet the challenge to connect Honduras and the neighboring nation of Belize using a single microwave link. Aviat Networks network engineers and TELSSA engineers were able to use their extensive knowledge of local propagation conditions, thorough understanding of long path design principles and precise installation practices to successfully implement this 180km microwave link.
Long Path Design Considerations
As outlined in the article last year for the longest all-IP hop, a deep understanding of path design considerations and experience in microwave transmission path design are necessary to successfully complete a long path design. Key considerations involved:
To read more about this world-record Hybrid Diversity IP microwave link, download the full article.
Senior Network Engineer