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Aviat Helps Enhance Voice and Data for Ncell in the Himalayas
Just this February, Ncell, the leading mobile provider in Nepal, awarded Aviat Networks an Appreciation Certificate for successfully migrating its existing VSAT network to high-speed Eclipse microwave radio. This project was executed in the Himalaya range at an average attitude of 4,410 meters above sea level with three passive repeater links. Included in this rollout is a 99 km microwave link.
According to Ncell, this is the world’s highest 3G rollout. As a result, this upgrade is considered a feather in Ncell’s hat.
While Aviat Networks has completed many successful projects with Ncell, this one is worth a special mention. Awarded in 2013, this project has helped Aviat establish itself as a key Ncell vendor for the access network. The implementation includes equipment and services.
Adaptive Media Awareness: Making Layer 3 Microwave Aware
- November 24, 2015
- 2G, 5G, coax, copper, fiber, IP, IT, Layer 1, LTE Advanced, microwave, Microwave Router, SCADA, transport
In many wireless networks, transport engineering looks after the microwave radio function while the IT department has domain over IP equipment. These two organizations started independently and grew separately over many years. It did not seem that there was any problem with this arrangement.
However, it led to the selection of equipment—radios and routers—that worked really well on their own but had no awareness of one another. Not surprisingly, these technology solutions did not perform together optimally.
We Put the Spotlight on Voice Over LTE (VoLTE)
- August 7, 2014
- Aviat Networks, backhaul, LTE, microwave, Microwave backhaul, Microwave Radio, Microwave transmission, Mobile network operator, mobile networks, Mobile Technology, technology, voice over lte, volte
As one of the most anticipated network technologies, Voice over LTE (VoLTE) has been discussed by operators for years. The expectation was that deployments would start in 2013, but roll-outs in North America were delayed.
Logo courtesy of YTD2525 Blog
Operators have faced a series of issues that include poor voice quality and long call establishment times. Once these problems are solved, it is expected that VoLTE will allow operators to provide voice and data services using an integrated packet network. As the problems described show, the implementation of VoLTE presents challenges for the entire LTE ecosystem including microwave backhaul.
We have produced a white paper to describe some of the VoLTE requirements that must be met in order to overcome these technical challenges, which must encompass a flexible microwave backhaul as a key factor for a successful transition to all-packet voice and video VoLTE networks. A brief introduction to VoLTE is presented and then different VoLTE backhaul requirements are described with possible solutions.
Click here to download a white paper on this subject titled “VoLTE and the IP/MPLS Cell Site Evolution”.
‘My Experience’ with Microwave Radio Systems
- December 13, 2013
- Marshall Space Flight Center, microwave, microwave communications, Microwave Radio, Microwave transmission, Radio, Rod Beck, Telecommunications, Utilities Telecom Council
Quasar GB 1428, 12.4 billion light years from Earth, a celestial source of enormous X-ray and microwave energy. Photo: NASA’s Marshall Space Flight Center / Foter.com / CC BY-NC
Collectively, we as consumers of high-tech communications systems tend to think very analytically, very logically, about the solutions that form the core of our working lives. In all the fields that we pursue from mobile telecom to public safety to utilities to oil and gas to financial, microwave radio has touched, shaped and framed our worldview. But like a star in a distant galaxy, every user’s experience with microwave radio is unique. No exception to that totality of reality is Ron Beck, president emeritus and past chairman of the Utilities Telecom Council, a trade group dedicated to advocating telecommunications issues for energy companies and associated concerns.
In a recent video, Beck talks about his life with microwave radio for almost 30 years. Starting with analog TDM microwave radio, he has traveled the technology evolutionary path to arrive at the present day systems of digital IP/Ethernet microwave communications. However, before ever touching on any technical considerations, he talks about the people responsible for his and his company’s success with microwave. For utilities applications, Beck feels it is critical that the people he deals with at a microwave solutions provider understand his business. “The (Aviat) sales force understands utility applications; they understand what we need in a radio system,” he says.
Beck goes on to elaborate how Aviat design and engineering groups collaborate closely with his team to deliver exactly the solution that is needed. Service and standards-based technology are very important to him and make microwave radio very user-friendly because “frankly, you don’t have to touch it very much.” See and hear all Beck has to offer below:
Related Articles
- Firms Race to Transmit Wall Street Data at Nearly Light Speed (latimes.com)
- Lessons Learned: Transitioning from TDM to IP (aviatnetworks.com)
- Basin Electric Team Tests Microwave Equipment (aviatnetworks.com)
- Evolution of Microwave: History of Wireless Communications (aviatnetworks.com)
- Radio-Loud AGNs at High Redshifts and the Cosmic Microwave Background [CEA] (arxiver.wordpress.com)
Beyond Mobile and Public Safety, Microwave Finds its Niche
- November 27, 2013
- Australia, microwave, National Broadband Network, NBN, public safety, Vertel, Victoria, Wide Area Network
As we have seen recently, microwave radio continues to find new and niche applications beyond the archetypical mobile operator and public safety markets. Long time Aviat partner/customer Vertel has been working on microwave broadband in the Australian healthcare sector for many years. And with the recent emphasis placed on servicing the healthcare sector by the rollout of the National Broadband Network across Australia—as NBN lumbers along toward a 2019 completion date—Vertel has been able to re-energize this niche application in microwave radio for its support of telemedicine and telehealth, as outlined recently in Pulse + IT Magazine.
60GHz Band: a Solution for Small Cell Backhaul?
- October 8, 2013
- Aviat Networks, backhaul, frequency bands, Ian Marshall, microwave, Radio spectrum, small cell, Spectrum, Telecommunications, White Paper, wireless
Small cell will enable mobile usage in dense urban environments but will need a backhaul solution to make it possible. Photo credit: Ed Yourdon / Foter / CC BY-SA
The Case for Small Cell Backhaul
As the search for frequency bands with suitable capacity for small-cell backhaul continues, frequency bands above 50GHz start to appear attractive because they offer both high-bandwidth availability and short range owing to their inherent propagation characteristics. The white paper available at the bottom of this blog examines spectrum in the 57-64GHz range to see whether it can be of use for small cell backhaul.
In many countries, the frequency range 57-66GHz is split into a number of discrete bands with differing requirements and conditions of use and/or licensing. These differences will be highlighted where applicable.
From a global point of view, the use of this spectrum by Fixed Services (FS) is being addressed by the ITU-R in its draft report on Fixed Service use trends in WP5C, which is currently under development and states:
57 GHz to 64 GHz
The radio-frequency channel and block arrangements of these bands for FS are defined in Recommendation ITU-R F.1497.
In 2011, around 700 links were in use in this band in a few administrations. The majority of the links are used for fixed and mobile infrastructure.
The air absorption around 60 GHz is over 10 dB/km. This condition restricts the hop length; on the other hand, the spectrum reuse efficiency is high. This feature makes the band suitable for small cell mobile backhaul.
Clearly, a global reported usage of 700 links would suggest a great deal of underutilization, although with unlicensed use in many countries it is difficult to know whether these figures are accurate or not. Regardless, there are reasons as to why this could be the case, while noting that the ITU-R believes this band has potential for small cell backhaul.
One factor is that this spectrum is not allocated solely to the Fixed Service. In fact, in many countries the Fixed Services have no access to this spectrum at all. A more detailed country-by-country breakdown follows. Please sign up below to receive the entire white paper.
[contact-form-7 404 "Not Found"]Ian Marshall
Regulatory Manager
Aviat Networks
Related articles
- 3 Top Trends in Backhaul Summer 2013 (aviatnetworks.com)
- mmWave Technology Evolution From WiGig to 5G Small Cells (slideshare.net)
- Telkom Mobile in ‘prime’ LTE position (techcentral.co.za)
- Ofcom Consultation: 71-76 GHz and 81-86 GHz bands (southgatearc.org)
- Should National Telecom Regulators Impose Buildout Requirements on Operators? (aviatnetworks.com)
Rules of the Game: Low Latency Microwave in a Multi-Regulatory Environment
- September 20, 2013
- Aviat Networks, Back Office, Business, Ian Marshall, Investing, latency, Latency (engineering), Low latency, microwave, technology
![[潛伏Latency] Charcoal, watercolor, fire on paper, 2011. Photo credit: RedPapaya (栩) / Foter / CC BY-NC-ND](/wp-content/uploads/2013/09/e6bd9be4bc8f-latency-charcoal-watercolor-fire-on-paper-2011.png)
[潛伏Latency] Charcoal, watercolor, fire on paper, 2011. Photo credit: RedPapaya (栩) / Foter / CC BY-NC-ND
Typically, low-latency microwave is used to “replace” traditional-fiber based networks linking financial centers. The business driver for microwave-instead-of-fiber in low latency is the time it takes to transmit trading instructions. With microwave, latency is reduced by a few milliseconds as compared to fiber. Nevertheless, those few milliseconds can translate into a trading edge over rival investors, which means big bucks. Low latency investors will pay a premium for this edge resulting in increased revenue for low-latency microwave network operators.
However, as with most financial functions, low latency is subject to a set of stringent regulations. The scenario is doubly difficult when low-latency microwave networks transmit across international boundaries. This compares to linking financial centers within a single country, which is relatively straightforward from a regulatory perspective because there is only one set of rules. The fact is when connecting financial centers in different nations and the operator’s network has to traverse other countries’ borders, the process becomes orders of magnitude more complex. Download the complete article for a fuller examination of some of these issues and why there should be widespread support for greater international harmonization of microwave regulation.
Ian Marshall
Regulatory Manager
Aviat Networks
Related articles
- Savvis Adds Aquis Exchange to Global Network of Venues (virtual-strategy.com)
- Low Latency Microwave Serves Many Purposes (aviatnetworks.com)
- Low Latency Microwave Crosses Europe for the First Time (aviatnetworks.com)
- On Wall Street Low Latency Microwave Fulfills Faster than Fiber (aviatnetworks.com)
- Why low latencies is critical in every industry ? (visual.ly)
A (Personal) Milestone in Microwave Networking
- September 13, 2013
- Aviat Networks, backhaul, Louisiana, Michael Pangia, microwave, microwave communications, microwave project, Microwave Radio, Telecommunications
Figure 1: Aviat Networks’ senior network engineer Ivan Zambrano shares his first microwave radio path plan on the occasion of his 28th anniversary with the company.
Recently, Aviat Networks was privileged to mark a milestone for one of its longest tenured and most distinguished employees, Ivan Zambrano. For 28 years, Ivan has dedicated his professional life to providing education and expert analysis to the microwave backhaul community, on the behalf of Aviat Networks and its corporate predecessors. As a senior engineer, Ivan teaches network transmission courses and other topics around the world on a regular basis.
However, Ivan got his start in the field. In fact, he still has the very first microwave radio path plan he ever created for a television station in Louisiana (Figure 1).
Together with the legendary Dick Laine (Figure 2), the two veteran microwave communications professionals have a combined 97 years of experience in the field. Unbelievably, Ivan actually has seniority over Dick (in the company at least). Dick has only been with us for a mere 26 years!
Figure 2: Dick Laine (left) and Ivan Zambrano have a combined 97 years of microwave experience.
To help celebrate the occasion, Aviat Networks CEO, president and board member Michael Pangia took some time to personally congratulate Ivan (Figure 3). So here’s to you Ivan! We’re all looking forward to at least another 28 years!
Figure 3: Aviat CEO Michael Pangia and Ivan.
If you’d be interested in having Ivan or Dick lend a hand (or bend an ear) on your microwave project, let us know by dropping a note below. Give us an idea about the type of training or consultation you need and any other pertinent details about the project.
[contact-form-7 404 "Not Found"]Top Trends in Backhaul Summer 2013
- September 6, 2013
- Africa, backhaul, Market share, microwave, Middle East, Nigeria, Northern Hemisphere, technology
Ryan Bruton: Aviat Networks senior international marketing manager.
As the summer in the Northern Hemisphere quickly draws to a close, we can look back to the beginning of the season to see what was on the mind of the backhaul market. Our international marketing manager, Ryan Bruton, gave an interview to CommsMEA covering the trends in backhaul for this time period.
In microwave backhaul, for the African market, radio links are averaging around 40 kilometers in length, says Bruton. This is due in part to climatological conditions, but other factors could also be involved, he says. However, in the Middle East, the typical microwave backhaul links are above this average—also partially due to the atmosphere and geography.
Another big trend Bruton sees this summer in backhaul includes the barriers to fiber being used in the Middle East and Africa markets. Accordingly, fiber is very difficult to trench over kilometers and kilometers of open desert. The terrain is inhospitable and very tough on fiber due to high heat and arid conditions. Not to mention bringing in the equipment necessary to install long fiber routes can be a very large obstacle if the paths lay some distance away from existing roads and other infrastructure. Going through the lush flora of Africa, such as in Nigeria, trenching fiber presents a different yet also nearly insurmountable set of barriers, with massive stands of sometimes-centuries-old trees. And clearcutting tropical rainforest to make way for a fiber backhaul route is neither cheap nor “green.”
Microwave is both the more cost-effective and greener alternative compared to fiber-optic technology for wireless backhaul. Currently achieving about 50 percent of the total market share for backhaul worldwide, microwave certainly is a driver for mobile and other wireless network operators.
Then there is always the potential for fiber to fall victim to so-called “backhoe fade,” a euphemism for the accidental cutting of fiber lines by misguided digging operations. But there is always the potential that fiber cuts are not accidental. In any event, fiber is vulnerable to cuts over the entire course of a route—from Point A to Point B. Microwave sites are isolated to a single spot where they may be assailable. At least operators have the option of “hardening” their microwave sites for maximum uptime, whereas, again, this would be too cost prohibitive in the case of fiber over an entire route.
Related articles
- Microwave Transmission Revenue Grew 13 Percent in Second Quarter 2013, According to Dell’Oro Group (virtual-strategy.com)
- 85 Microwave Operators tell us their Biggest Backhaul Challenge (aviatnetworks.com)
- Lessons of LTE Africa 2013: Bringing Broadband Back to Basics (aviatnetworks.com)
- Sprint’s LTE rollout hampered by lack of backhaul and Network Vision issues (fiercewireless.com)
