Consultix is ​​selling 5G protection with mmWave transportable gadgets

The path to robust 5G networks

Go to your website before customers speak. “

– Consultix

CAIRO, EGYPT, February 5, 2021 / – The initial deployment of 5G networks in mmWave bands showed promising signs, while in some scenarios there were coverage gaps and dead spots.

This cannot be interpreted far from the propagation modeling that forms the basis of the planning, and knowing the propagation properties is key to meeting network KPIs and optimizing capital costs.

Propagation studies of sub-6 GHz bands are fairly mature; However, even less knowledge has been gained about the propagation of mmWave, especially within buildings. MmWave coverage cannot be adequately predicted or optimized without the help of real-world field tests to tailor coverage simulations to all areas or venues. Otherwise, it will ultimately lead to either additional infrastructure costs or a poor user experience. the 5G promise-.

In addition, indoor radio propagation is very different from that outdoors, not only due to wall losses, but also due to complex propagation mechanisms. And all of them lead to a completely different HF behavior, which is very different from place to place within a building.

• mmWave behaves differently
1. According to physics, the higher the frequency, the higher the path loss
2. Diffraction plays a significant role in low GHz propagation. However, with mmWave, its impact decreases significantly
3. Reflection supports mmWave multipath propagation; However, this is not predictable
4. With mmWave frequencies, the scattering has a great influence on the received signal strength and polarization
5. Different materials that are commonly used in building construction have different penetration losses, which can be up to 40 dB compared to low GHz
6. Signals coming in from the macro location indoors are heavily attenuated with mmWave compared to low GHz bands.

Prediction and simulation tools are essential elements in radio planning. However, you cannot cover all aspects of the site. In several cases, the financial and technical risks can be significant if this adjustment is ignored. This led to the need for a real field measurement to optimize infrastructure costs and meet the operator’s KPIs.

1) Outdoor coverage:
The model calibration is the safety net of the coverage simulation and therefore a standard function in any reliable planning software. In the case of mmWave, however, it becomes a more critical step to mitigate the effects of uncertainties, fine-tune the model chosen, and quantify the growing effects of factors such as foliage, rain and oxygen per region.

By using matched / calibrated models to develop new site plans or optimize an existing site cluster, the radio planning engineer can better define site parameters that accurately model the real world.

2) Inner cover:
While nearly 80% of mobile traffic originates or ends inside a building, the cost and network complexity of indoor communication systems – especially with mmWave bands – depend heavily on the number of small cells or RF nodes required to achieve coverage goals are. If 49% of architects see the cost of deploying indoor networks as the biggest challenge in their projects, then highly optimized designs are required.

This leads the city to know that most healthcare workers claim poor cellular coverage, at least intermittently, and nearly 30% of warehouse distribution workers have to go outside to make calls.

While leading providers of interior design tools do little to ensure that the materials in their database are as accurate as possible, the prediction is not always accurate because of the following factors:
1. Database / reality differences
2. Missing entries
3. Incorrect material selection
4. One or more materials that are not in the database
5. Other hidden materials on site

For this reason, RF site measurements should be carried out during the planning of the indoor network to examine how the propagation mechanisms aggregate at each venue type. And it’s the only way to get real information about the structure, study the effect of actual wall materials on signal strength, and uncover complex propagation mechanisms.

It is worth noting that in the event that the fault is detected before construction work, the price increase will be significantly less than in a later stage. Are you considering which parameters are correct for a particular venue? Accurate prediction calibration requires real signal testing using a CW test process in various building morphologies which can then be used to change prediction parameters. Otherwise, it will eventually lead to a scenario where everyone will be blamed!

• Financial and technical interpretation
Analysis of several projects and case studies after deployment yielded three typical numbers that sorted out the coverage and deficiencies of the KPI in forecast-only scenarios and alternatively in CW-enhanced modeling.

The table here summarizes the financial, technical risks and implications if fine-tuning the dispersion models for the specific environment / venue is ignored.

• Portability of the Consultix field test
Professional planning engineers identify the coverage errors due to missing field measurements during the planning phase. The challenge, however, is that test equipment in mmWave tapes for such field missions used to be expensive and bulky.

2 years ago Consultix investigated the incoming demand for portable test tools @ mmWave tapes and added the world’s first test transmitter for indoor and outdoor propagation studies at up to 28.6 GHz to its CW family. The first model was used by leading operators, providers and service companies in their first deployments of 5G worldwide.

The company recently announced the 5G Duo transmitter as the top of the line in its portable family. The new 40 GHz test transmitter offers unprecedented levels of performance for model calibration campaigns both indoors and outdoors. And it is characterized by the same family characteristics as portability, simplicity and value for money.

Because on-site setup in this band is quite difficult and sourcing the right accessories can be overwhelming for project managers, Consultix, as a one-stop provider of CW test solutions, provided a turnkey system that included high gain antennas and low loss cables . Non-metal tripods and training on best practices for high measurement integrity.

Using real world case studies and field analysis, the company is helping decision makers in general create their business cases to achieve the mmWave performance promised.

Amr M. Elgazzar
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February 05, 2021, 10:54 GMT

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