Author: Yunuen Wagner

After more than a decade in the telecommunications industry, Yunuen Wagner, Product Marketing Manager, is still amazed by how fast communication technologies change, evolve, and adapt. “Today, we have a whole network in our pockets”, says the expert in installation and field service solutions with a B.Sc. in electronics and communications engineering. Determined to support network operators and their subcontractors in their endeavors to keep a network up and running, Yunuen shares her expertise in interference hunting and offers practical tips on how to keep interferers out and revenue in.

By | November 13, 2017 | 420 views
 

Interference hunting: the real meaning of automatic direction finding

The need for interference hunting in mobile networks is steadily increasing. And field engineers often ask us which tool we would recommend to be successful in the field. With decades of expertise, what we can say for sure is that it depends: the right tool for successful field service operations depends on the source of interference. Sources are manifold, but…

 
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By | August 3, 2017 | 1,165 views
 

PIM testing: best practices in a nutshell

When it comes to PIM testing, the necessary steps to identify passive intermodulation (PIM) and locate its source are similar to interference hunting. In the end, PIM is an internal source of interference and can have a significant impact on network performance. Before starting with PIM measurements, however, it is recommended to test return loss. The PIM analyzer transmits high power;…

 
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By | March 30, 2017 | 529 views
 

HetNets/Small cells: indoor installation (part 3 of 4)

With network planning and network design in the can, the small cell deployment’s most critical phase begins: the actual indoor installation and commissioning. Or did you know that more than 50% of subscriber issues originate in the antenna system? Many of these faults don’t necessarily trigger an alarm at the Operations Support System (OSS), at least not until a critical level…

 
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By | March 9, 2017 | 845 views
 

Webinar report: identifying and eliminating interference in mobile networks

In mobile networks, interference is an unwanted unlicensed signal affecting the licensed channels, causing extra noise. Interference on the RF level translates into a lower Signal-to-Noise-Ratio (SNR), Received Signal Strength Indicator, Ec/Io, etc. From a subscriber’s point of view, interference is perceived as distorted audio or video, low data rates or dropped calls. In short: a bad user experience. For…

 
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By | January 12, 2017 | 558 views
 

Identifying passive intermodulation

Passive intermodulation is nothing new. It has been an issue since the first commercial networks. In GSM, for example, whenever a PIM issue was present, network operators could easily re-allocate frequencies without affecting the service. With 3G and 4G, however, frequency re-allocation is no longer possible. PIM problems have to be dealt with. They have become even more important as…

 
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By | December 18, 2016 | 382 views
 

Suspecting PIM issues in your network? Let us help you find the root cause

More subscribers and higher data rates translate into a constant strain on networks, no matter where. But what could have happened when technicians are notified of low performance yet cannot find any defective components at the BTS site? The answer may be: passive intermodulation, or PIM. And, the source of this PIM problem could be a tiny metal flake in…

 
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