Tricity – report

Measurement summary in Tricity

We completed the analysis of the data collected during the measurements in Tricity, which took place on 3-6.06.2014. It’s time for a summary, which of the leading operators in Poland offers the best quality of voice call services and the fastest Internet in Tricity.

A measuring car rode through the streets of Gdańsk (Danzig), Sopot and Gdynia. The table below presents basic assumptions, that were achieved during measurements.

Type of measurement Measured parameter Access technology
Orange T-Mobile Plus Play
Voice call quality MOS POLQA
(marking from 1 to 5)
2G/3G 2G/3G 2G/3G 2G/3G
Internet speed Throughput [Mbps] 2G/3G/LTE 2G/3G 2G/3G/LTE 2G/3G/LTE

During measurements LTE technology in T-Mobile wasn’t commercially available, that’s why bandwidth measurements took place in 2G/3G technology. The other operators supported LTE technology. The voice quality was assessed on the five-point MOS POLQA scale, and the Internet speed was evaluated by Throughput and RTT.

MOS (Mean Opinion Score) provides a numerical indication of the perceived quality from the users’ perspective of received media after transmission. The MOS is expressed as a single number in the range from 1 to 5:
5 – excellent quality (full understanding of discussion, there is no need to concentrate during the call for full understanding and transparent communication),
4 – good quality (good level of understanding, little effort needed during the call to maintain full understanding of discussion),
3 – acceptable quality (noticeable decrease of quality – caller and receiver needs to focus during the call),
2 – poor quality (very bad quality – need maximum effort and full focus to understand what second person is talking about),
1 – unacceptable quality (despite of maximum effort it is impossible to understand what second person is talking about).
POLQA (Perceptual Objective Listening Quality Assessment) is an objective method of estimating the subjective evaluation of speech quality. The most often expected way is expressed as a single number in the range from 1 to 5 according to the MOS scale. POLQA is the follower of PESQ (Perceptual Evaluation of Speech Quality).
Throughput in telecommunication determines the amount of data transferred correctly at a specific time and most frequently is given in megabits per second (Mbps).

The measurement results of voice quality in Tricity with MOS assessment use are presented in the bar chart. Taking into account the four leading operators in Gdańsk (Danzig), Sopot and Gdynia the best call quality is offered by Orange, and the worst – by Plus.However, the differences between the best result and the worst one are small. According to the guidelines set in the Memorandum of UKE (The Office of Electronic Communications) about the quality of voice services, 99% of all the operators’ samples achieved the result higher than 3 on the MOS scale. It means that voice services are of good quality.


4.29 4.28 4.12 4.21
Orange T-Mobile Plus Play


The average voice call setup times are presented in the chart below. In Tricity the longest call setup time is in Orange, approximately 4,5s. The fastest one is offered by Plus, approximately 3s.


4.54 s 3.90 s 3.01 s 3.67 s
Orange T-Mobile Plus Play


The average Internet speed which is offered by the listed above operators in Tricity is presented on the chart below. The colour which is used corresponds to a given range on the bandwidth scale placed on the RFBenchmark measurement map. Plus and Orange, approximately 24Mbps.


24.1 Mbps 15.1 Mbps 24.5 Mbps 16.2 Mbps
Orange T-Mobile Plus Play


The table below shows how all the operators satisfy the requirements set on the Memorandum of UKE work about maintaining proper quality of packet (Internet) services, which guarantee the trouble-free Internet use.

Description of the colours, adopted in the final report on the Memorandum of UKE work:
 Green colour  – good quality of services,
 Yellow colour  – satisfactory quality of services,
 Red colour  – low quality of services.

Type of service Minimum requirements of service quality Orange T-Mobile Plus Play
Web browsing Throughput > 1 Mb/s DL RTT < 200ms 100,00% 96,96% 100,00% 99,75%
Watching video <720p Throughput > 2 Mb/s DL RTT < 200ms 100,00% 96,67% 100,00% 99,63%
Watching video >=720p Throughput > 6 Mb/s DL RTT < 200ms 99,66% 88,74% 98,64% 95,83%
Calls in HD Throughput > 1,5 Mb/s DL/UL RTT < 150ms 99,24% 70,96% 91,49% 98,22%
VoIP telephony Throughput > 0,64 Mb/s DL/UL RTT < 150ms 99,79% 89,48% 98,21% 98,90%
Multiroom (3x HD video) Throughput > 18 Mb/s DL RTT < 200ms 58,28% 0,07% 55,65% 0,31%
Real time online games Throughput > 2 Mb/s DL & 1,5 Mb/s UL RTT < 30ms 24,95% 0,67% 0,86% 0,00%
Flash games Throughput > 1 Mb/s DL/DL RTT < 200ms 99,52% 84,59% 93,85% 98,77%

To sum up, taking into account the four leading operators in Tricity the best voice call and Internet service quality is offered by Orange. Unfortunately, none of the mobile operators do not enable us to use Multiroom service 3x HD or play real time online games at a good level. According to the methodology set in the Memorandum of UKE voice call quality is at a good level.

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