Download - Mobile Communications Systems GSM/UMTS/LTE

Mobile Communications Systems

G S M / U M T S / L T E

EEvvaalluuaattiioonn ooff QQuuaalliittyy ooff SSeerrvviiccee

Evaluation of the quality of GSM, UMTS and LTE voice services, data

services and radio network coverage in the Municipalities of Odemira and Vila Flor.

December 2014

Evaluation of Voice Services, Data Services and Network Coverage | Municipalities of Odemira and Vila Flor | September 2014 3

PRIOR NOTE

ANACOM HOLDS NO RESPONSIBILITY FOR ANY ANALYSIS, STUDY OR COMMENTARY

BASED ON THE RESULTS OF THIS REPORT.


Contents

I Executive Summary ..........................................................................................Error! Bookmark not defined.

I.I General Framework ............................................................................................... Error! Bookmark not defined.

I.II Key Findings and Conclusions ............................................................................... Error! Bookmark not defined.


I EXECUTIVE SUMMARY

I.I GENERAL FRAMEWORK

In September 2014, Autoridade Nacional de Comunicações (ANACOM) undertook an evaluation of the

quality of the voice and data services and GSM, UMTS and LTE radio network coverage provided by

the following operators in the main urban areas and along the main roads of the Municipalities of

Odemira and Vila Flor: MEO - Serviços de Comunicações e Multimédia, S.A. (MEO), NOS

Comunicações, S.A. (NOS) and VODAFONE PORTUGAL - Comunicações Pessoais, S.A. (Vodafone).

This study is based on field tests conducted with moving vehicles and outdoor antennas, using an

automatic measurement system, reflecting the various aspects that affect quality of services (end-to-end

measurements). Measurements were carried out simultaneously in the same locations and with the

same parameterization for the three operators.

Studies which seek to gauge the user´s perception of quality, such as the present study, are known as

Quality of Experience Studies (QoE), setting out to determine the user experience in terms, for example,

of service accessibility, retention and integrity. In contrast, analyses of Network Performance or Quality

of Service seek to assess the capacity of a network (or a part of a network) to provide a service with a

determined level of quality. This covers functions, mechanisms and procedures implemented by the

cellular network and by terminal equipment, which ensure the provision of the quality of service

negotiated between the terminal equipment and the core network infrastructure.

However, this does not mean that the results of a Quality of Experience Study represents quality as

perceived by an average user or by the majority of users, because such studies are always subject to

the conditions under which they were performed; so, for example, in the case of this study, it is

recognized that, in the most part, data services are not usually accessed outdoors using a laptop

computer connected to the network via a data card and an external antenna (as in the tests conducted).

Therefore, although the present study is a Quality of Experience Study, its analysis may not reflect, in

particular with regard to data services and respective coverage, the actual perception of the majority of

users.

Quality of Experience is usually expressed in terms of human feelings, such as "Excellent", "Good",

"Acceptable", "Poor" and "Bad", while Network Performance is a purely technical concept measured,

8 QoS-Mobile Networks and Services | GSM-UMTS-LTE

expressed and understood in the context of a network or network components, with little meaning as far

as the user is concerned.

To evaluate the voice service, capacity for call establishment and termination was measured, together

with the perceptibility of the communication.

In assessing the data service, an analysis was made of file transfer capacity (FTP upload / download),

Internet navigation (HTTP web browsing) and also transmission latency (ping).

To evaluate radio network coverage, measurements were made of the radio signal levels received by

the mobile terminal equipment (downlink) for each of the technologies used by the operators.

The main quality indicators analyzed for the services covered by the study were as follows:

1. Radio Network coverage - GSM, UMTS and LTE network availability;

2. Accessibility of the Voice Service - probability of success when establishing calls;

3. Voice Call Establishment Time - Length of time taken by the network to establish a

communication after correct submission of the request (destination telephone number);

4. Voice Call Termination Rate - Probability, after a call is successfully established, that it will

remain active for a period of time and terminate normally, i.e. as intended by the user;

5. Voice Call Audio Quality - Perceptibility of the conversation during a call;

6. Termination Rate of Sessions Using the Data Service - Probability that a session using the

data service - file transfer or Internet browsing - is established and is maintained successfully,

i.e., it remains active during the entire period required for the file transfer or to allow the transfer of

the entire web page;

7. Data Transfer Speed - Quantifies the average speed of data transfer during a file transfer

session;

8. Web Page Transfer Time - Quantifies the average time taken to download a reference web

page;

9. Data Transmission Latency - quantifies the time needed for an information packet to travel from

the user´s device to the Content Server or visa versa.


Fieldwork was conducted, on working days and during normal working hours from 15 to 25 September

2014. 3,169 test calls were performed, 12,808 sessions using data services and 1,736,852

measurements taken of the radio network signal, which corresponds to about 54 hours of

measurements over approximately 2,242 kilometres.

Given the penetration rate of these services, the diversity of terminal equipment used and the very

subjectivity inherent to each user, it is impossible to accurately reproduce the conditions of each

consumer's interaction with the networks. A study of this type cannot be completed without adopting

certain compromises and estimates, within limits which ensure that the results obtained can be viewed

as a reliable indicator of the overall performance of mobile communication systems. The transposition or

extrapolation of the results to specific situations must be done with prudence, at the risk of drawing

conclusions that distort the reality of the situation.

The adopted technical and methodological options directly influence the results and should be taken into

account in their analysis. The following options are particularly relevant:

The testing was conducted exclusively using a technical solution (hardware and software) and

was processed completely automatically, allowing the homogeneous setting of measurement

conditions for the three operators and eliminating any subjectivity inherent to a human user;

The following terminal equipment was used: Nokia C7 and Huawei E392;

The tests were conducted with moving vehicles and outdoor antennas;

The duration of the conversation phase of voice calls was 120 seconds;

Voice and data tests were performed with automatic selection of GSM, UMTS and LTE

infrastructure;

The Servers, used in the data service tests, were hosted in Portugal, in a data centre at FCT -

Fundação para a Ciência e a Tecnologia, I.P. (Foundation for Science and Technology);

In data tests, stable content was used, i.e. web pages and files that had no quantitative or

qualitative changes over time;

File Transfer Tests (FTP upload / download) were performed according to the concept of fixed

data transfer time, i.e., data transfer is performed over a predefined period of time instead of the

full transfer of files of a fixed size;


Radio network coverage indicators, in particular, UMTS and LTE network coverage, did not take

network load into account (number of simultaneous users and type of services used);

The GSM, UMTS and LTE network coverage indicators presented in this study result from the

analysis of the radio channel provided by operators prior to the study´s performance. Due to an

omission by Vodafone, some of the LTE channels of this operator were not analyzed. According

to the operator, these channels were used on a local basis - Zambujeira do Mar, Guarda,

Bragança, Évora and Coimbra -, and this omission had a direct impact on the LTE network

coverage indicator reported for Vodafone in the urban centres of mainland Portugal and on the

statistical significance of this indicator;

In some parts of the Portuguese territory, especially near the Spanish border, performance of the

LTE networks of Portuguese operators was affected by Spanish DTT during the period of testing.

With the shutdown of Spanish transmitters, which occurred in early 2015, the performance of

Portuguese LTE networks in these locations is expected to improve;

The generic test scenario used by ANACOM in this study corresponds to a use of

communications services which is the most favourable given the strength of signal reception on

the mobile terminal device, due to the non-consideration of signal loss because of indoor

environments and due to use of mobile terminal equipment with outdoor antennas. This situation,

is not very significant as far as the Voice Service is concerned, but has significant impact on

Radio Network Coverage and on Data Services, resulting in higher levels of performances than

could be obtained indoors;

The servers used were dedicated exclusively to the performance of these tests, so that, in the context

of the study conducted, there are no limitations on processing power and information storage,

whereby availability and access bandwidth can have a positive influence on the results of the data

transmission speed (as opposed to the results that may be obtained by a general user accessing

conventional servers). Furthermore, the servers used, which function along the same lines as servers

available on the Internet, are identified by the respective IP addresses and not through their FQDN

(Fully Qualified Domain Name), ensuring that the measurements were not negatively affected by DNS

(Domain Name System) resolution problems or caching strategies;

The results of the study only reflect the behaviour of networks in the locations and at the times of

actual measurement;

Operators are continually improving their networks. The technical interventions necessary for


these improvements can cause momentary degradations of the service in the geographical areas

were work is performed.


I.II KEY FINDINGS AND CONCLUSIONS

In the municipalities of Odemira and Vila Flor, extensive geographic areas persist with poor or non-

existent radio network coverage, affecting the performance of electronic communications services

supported by the mobile communications systems of the operators MEO, NOS and Vodafone.

The levels of coverage and performance of the services reported in this study are much lower than in

study conducted in the main urban centres and along the main roads of mainland Portugal (conducted

from 30 September to 3 December 2014), with very significant differences observed in performance

between the different operators, technologies and services analyzed.

GSM, UMTS and LTE Radio Network Coverage

The municipalities of Odemira and Vila Flor include extensive geographic areas with poor or non-

existent network coverage.

In the municipality of Odemira (Figure 1), the GSM coverage provided by MEO and NOS is acceptable

overall, while Vodafone provides poor coverage. All operators provide bad UMTS network coverage.

The LTE coverage of MEO and Vodafone is very weak, especially Vodafone´s, while the coverage

provided by NOS is virtually non-existent.

In the municipality of Vila Flor (Figure 2), the GSM coverage provided by MEO and NOS is generally

good and the coverage provided by Vodafone is acceptable. In terms of UMTS, Vodafone provides

good network coverage while MEO and NOS provide poor levels of coverage. LTE coverage is very

weak in this municipality, in particular as provided by Vodafone.

Comparing the results reported in these municipalities with the results obtained in the study conducted

in the main urban centres and along the main roads of mainland Portugal (Table 1 and Table 2), it is

noted that levels of good or acceptable coverage in these municipalities are much lower, especially

when it comes to UMTS and LTE technologies.


Figure 1 – Indicator: Radio Network Coverage, in the Municipality of Odemira.

Table 1 – Radio Network Coverage: Difference between the results observed in the study performed in Odemira (Sept. 2014) and in the study conducted in the major urban centres and along the main roads of mainland Portugal (30 Sept. - 3 Dec. 2014).

GSM UMTS LTE

MEO NOS Vodafone MEO NOS Vodafone MEO NOS Vodafone

Rad

io N

etw

ork

Cov

erag

e

Good -15.1% -18.5% -29.8% -28.7% -32.3% -31.8% -45.9% -86.9% -60.2%

Acceptable 9.9% 12.0% 15.7% 8.4% 11.2% 12.5% 10.7% 5.0% 8.5%

Bad 5.1% 6.1% 12.3% 6.2% 8.7% 9.0% 13.8% 16.0% 15.4%

Non-existent 0.2% 0.4% 1.8% 14.1% 12.4% 10.4% 21.4% 65.9% 36.3%

Good/Acceptable -5.3% -6.5% -14.1% -20.3% -21.1% -19.4% -35.2% -81.9% -51.6%

-------------------- -------------------- -------------------- -------------------- -------------------- -------------------- -------------------- -------------------- --------------------

84,8

%

9,9%

5,1%

0,2%

81,4

%

12,0

%

6,1%

0,4%

70,1

%

15,7

%

12,3

%

1,8%

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

Boa Aceitável Má Inexistente

GSM Radio Network Coverage

MEO NOS Vodafone

70,7

%

8,9%

6,3%

14,1

%

66,4

%

12,2

%

9,0% 12

,4%

67,9

%

12,6

%

9,0% 10

,5%

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%


UMTS Radio Network Coverage

MEO NOS Vodafone

44,2

%

16,4

%

16,8

%

22,6

%

4,1% 9,

3%

18,0

%

68,6

%

28,0

%

12,8

%

18,6

%

40,5

%0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%


LTE Radio Network Coverage

MEO NOS Vodafone


Figure 2 – Indicator: Radio Network Coverage, in the Municipality of Vila Flor.

Table 2 - Network Coverage: Difference between the results observed in the study performed in the municipality of Vila Flor (Sept. 2014) and in the study conducted in the major urban centres and along the main roads of mainland Portugal (30 Sept. - 3 Dec. 2014).

GSM UMTS LTE

MEO NOS Vodafone MEO NOS Vodafone MEO NOS Vodafone

Rad

io N

etw

ork

Cov

erag

e

Good -7.5% -13.2% -19.1% -25.5% -28.4% -9.6% -44.3% -45.4% -68.0%

Acceptable 6.3% 10.8% 13.2% 12.1% 12.6% 7.4% 16.3% 15.0% 16.5%

Bad 1.2% 2.3% 5.5% 6.7% 8.9% 1.9% 17.2% 15.0% 19.8%

Non-existent 0.0% 0.0% 0.4% 6.6% 6.9% 0.2% 10.8% 15.4% 31.6%

Good/Acceptable -1.2% -2.3% -5.9% -13.3% -15.8% -2.1% -28.0% -30.4% -51.4%

-------------------- -------------------- -------------------- -------------------- -------------------- -------------------- -------------------- -------------------- --------------------

92,4

%

6,3%

1,2%

0,0%

86,8

%

10,9

%

2,3%

0,0%

80,8

%

13,2

%

5,6%

0,4%

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%


GSM Radio Network Coverage

MEO NOS Vodafone

73,9

%

12,6

%

6,8%

6,6%

70,4

%

13,6

%

9,2%

6,9%

90,2

%

7,6%

2,0%

0,3%

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%


UMTS Radio Network Coverage

MEO NOS Vodafone

45,8

%

22,0

%

20,2

%

12,1

%

45,6

%

19,3

%

17,0

%

18,1

%

20,2

%

20,9

%

23,0

%

35,9

%

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%


LTE Radio Network Coverage

MEO NOS Vodafone


Voice Service

The performance of the voice service, although generally lower than as reported in the study conducted

in the major urban centres and along the main roads of mainland Portugal (Table 3 and Table 4), is still

good according to most of the indicators analyzed. In Odemira, MEO and NOS provide the best levels of

performance, and in Vila Flor, MEO stands out positively (

Figure 3, Figure 4, Figure 5, Figure 6, Figure 7 and Figure 8).

Figure 3 – Indicators: Accessibility of Service and Call Termination Rate in the Municipality of Odemira.

97,5% 98,2%97,5% 98,2%94,0% 96,2%

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

Acessibilidade do Serviço Taxa de Terminação de Chamadas

Voice ServiceMobile g Fixed

MEO NOS Vodafone

97,9% 98,2%96,8% 98,9%95,3% 95,5%

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%


Voice ServiceFixedgMobile

MEO NOS Vodafone

97,5% 98,2%97,5% 98,2%94,0% 96,2%

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%


Voice ServiceMobile g Fixed

MEO NOS Vodafone

97,9% 98,2%96,8% 98,9%95,3% 95,5%

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%



MEO NOS Vodafone


Figure 4 – Indicators: Accessibility of Service and Call Termination Rate, in the Municipality of Vila Flor.

Table 3 - Voice Service: Difference between the results observed in the study performed in the Municipality of Odemira (Sept. 2014) and in the study conducted in the major urban centres and along the main roads of mainland Portugal (30 Sept. - 3 Dec. 2014).

MEO NOS Vodafone

Mob.gFixed FixedgMob. Mob.gFixed FixedgMob. Mob.gFixed FixedgMob.

Vo

ice

Ser

vice

Accessibility of Service -1.9% -0.7% -1.1% -2.1% -5.0% -3.2%

Call Termination Rate -0.7% -1.2% -0.8% 0.1% -3.0% -3.7%

Average Call Establishment Time [s] 0.6 0.6 0.4 0.4 0.2 0.3

Average Call Audio Quality [MOS] -0.04 -0.12 -0.01 0.00 -0.15 -0.21

Table 4 - Voice Service: Difference between the results observed in the study performed in the Municipality of Vila Flor (Sept. 2014) and in the study conducted in the major urban centres and along the main roads of mainland Portugal (30 Sept. - 3 Dec. 2014).

MEO NOS Vodafone

Mob.gFixed FixedgMob. Mob.gFixed FixedgMob. Mob.gFixed FixedgMob.

Vo

ice

Ser

vice

Accessibility of Service -3.8% -0.6% -4.2% -5.4% -3.4% -2.2%

Call Termination Rate -1.4% -1.4% -2.4% -2.7% -3.9% -4.6%

Average Call Establishment Time [s] 0.1 -0.1 0.6 0.7 0.0 0.0

Average Call Audio Quality [MOS] -0.04 0.04 -0.13 -0.20 -0.07 -0.14

95,6% 97,5%94,4% 96,6%95,5% 95,3%

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%


Voice ServiceMobilegFixed

MEO NOS Vodafone

98,0% 97,9%93,5% 96,1%96,3% 94,5%

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%



MEO NOS Vodafone


Figure 5 – Indicator: Call Establishment Time, in the Municipality of Odemira.

Figure 6 – Indicator: Call Establishment Time, in the Municipality of Vila Flor.

4,6

17,0

3,3

4,7

15,7

3,54,0

9,0

3,0

0

2

4

6

8

10

12

14

16

18

20

Médio Máximo Mínimo

Call Establishment Time MobilegFixed

MEO NOS Vodafone

[s]

7,6

16,9

6,0

7,5

17,4

5,9

7,3

16,5

6,1

0

2

4

6

8

10

12

14

16

18

20


Call Establishment Time FixedgMobile

MEO NOS Vodafone

[s]

4,1

11,0

3,0

4,9

11,5

3,53,8

10,6

3,1

0

2

4

6

8

10

12

14

16

18

20


Call Establishment Time MobilegFixed

MEO NOS Vodafone

[s]

7,0

16,7

5,7

7,8

18,4

6,07,

0

15,0

5,7

0

2

4

6

8

10

12

14

16

18

20


Call Establishment Time FixedgMobile

MEO NOS Vodafone

[s]


Figure 7 – Indicator: Call Audio Quality, in the Municipality of Odemira.

Figure 8 – Indicator: Call Audio Quality, in the Municipality of Vila Flor.

File Transfer Service (FTP)

3,77 3,

99

1,00

3,77 3,

99

2,99

3,70 4,

01

1,97

0,0

0,5

1,0

1,5

2,0

2,5

3,0

3,5

4,0

4,5

5,0

Média Máxima Mínima

Voice Call Audio QualityMobilegFixed

MEO NOS Vodafone

[MOS]

3,82

4,17

1,00

3,93 4,

19

2,41

3,81

4,18

2,09

0,0

0,5

1,0

1,5

2,0

2,5

3,0

3,5

4,0

4,5

5,0


Voice Call Audio QualityFixedgMobile

MEO NOS Vodafone

[MOS]

3,78 3,

96

2,95

3,65

3,99

1,74

3,78 4,

00

1,72

0,0

0,5

1,0

1,5

2,0

2,5

3,0

3,5

4,0

4,5

5,0


Voice Call Audio QualityMobilegFixed

MEO NOS Vodafone

[MOS]

3,98 4,

18

2,47

3,72

4,18

2,39

3,88 4,

17

1,72

0,0

0,5

1,0

1,5

2,0

2,5

3,0

3,5

4,0

4,5

5,0


Voice Call Audio QualityFixedgMobile

MEO NOS Vodafone

[MOS]


In Odemira (Figure 9 and Figure 11), MEO was the best performing operator with acceptable levels

reported in terms of File Transfer Session Termination Rate and Average Data Transfer Speed.

Vodafone reports acceptable levels for downloads and weak levels for uploads in terms of Average Data

Transfer Speed. NOS provides Average Data Transfer Speed that is bad for downloads and uploads. As

regards the File Transfer Session Termination Rate indicator, the performance of both Vodafone and

NOS is poor.

In the Municipality of Vila Flor (Figure 10 and Figure 12), the performance of all operators is poor as

regards File Transfer Session Termination Rate – in particular Vodafone at levels below 65%. With

respect to the Average Data Transfer Speed indicator, for downloads, MEO provides acceptable results,

while Vodafone and NOS are weak. For uploads all operators recorded poor performance.

The results recorded in the municipalities of Odemira and Vila Flor are significantly lower than those

recorded in the major urban centres and along the main roads of mainland Portugal (Table 5 and Table

6). On the negative side, Average Data Transfer Speed for uploads provided by NOS in Odemira stands

out, as it is less than 8% of the speed registered in the major urban centres and along the main roads of

mainland Portugal.

Figure 9 – Indicator: Data Session Termination Rate, in the Municipality of Odemira.

Figure 10 – Indicator: Data Session Termination Rate, in the Municipality of Vila Flor.

Table 5 - File Transfer Service (FTP): Difference between the results observed in the study performed in Odemira (Sept. 2014) and in the study conducted in the major urban centres and along the main roads of mainland Portugal (30 Sept. to 3 Dec. 2014).

MEO NOS Vodafone

download upload download upload download upload

91,8% 91,2%85,8% 85,6%88,1% 88,1%

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

download upload

Data Session Termination Rate File Transfer (FTP)

MEO NOS Vodafone

75,8% 75,6%79,0% 78,3%

64,6% 64,8%

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

download upload

Data Session Termination Rate File Transfer (FTP)

MEO NOS Vodafone

Evaluation of Voice Services, Data and Radio Coverage | Municipalities of Odemira and Vila Flor | September 2014 21

File Transfer (FTP)

Session Termination Rate -5.9% -6.4% -9.4% -9.4% -7.5% -7.2%

Average Data Transfer Speed [kbps] -10.083 -2.228 -15.649 -4.842 -8.890 -2.991

-------------------- -------------------- -------------------- -------------------- -------------------- --------------------

Table 6 - File Transfer Service (FTP): Difference between the results observed in the study performed in the municipality of Vila Flor (Sept. 2014) and in the study conducted in the major urban centres and along the main roads of mainland Portugal (30 Sept. to 3 Dec. 2014).

MEO NOS Vodafone

download upload download upload download upload

File Transfer (FTP)

Session Termination Rate -21.9% -22.0% -16.1% -16.7% -31.0% -30.5%

Average Data Transfer Speed [kbps] -11.872 -4.559 -15.259 -3.940 -14.525 -3.401

-------------------- -------------------- -------------------- -------------------- -------------------- --------------------

Figure 11 – Indicator: Data Transfer Speed, in the Municipality of Odemira.

Figure 12 – Indicator: Data Transfer Speed, in the Municipality of Vila Flor.

13.6

31

49.6

79

7

3.93

8

12.8

55

5

11.0

01

38.7

94

9

0

10.000

20.000

30.000

40.000

50.000

60.000


Data Transfer Speed File downloads (FTP)

MEO NOS Vodafone

[kbps]

3.76

1 9.26

7

18414

5.43

4

18

2.40

6 6.72

2

18

0

10.000

20.000

30.000

40.000

50.000

60.000


Data Transfer Speed File uploads (FTP)

MEO NOS Vodafone

[kbps]

11.8

43

49.8

11

34

4.32

8

30.9

64

5

5.36

5

12.7

42

9

0

10.000

20.000

30.000

40.000

50.000

60.000


Data Transfer Speed File downloads (FTP)

MEO NOS Vodafone

[kbps]

1.43

0 7.59

6

181.31

6 6.86

8

18

1.99

7

4.17

0

19

0

10.000

20.000

30.000

40.000

50.000

60.000


Data Transfer Speed File uploads (FTP)

MEO NOS Vodafone

[kbps]


Internet navigation (HTTP web browsing)

In the Municipality of Odemira (Figure 13), the performance of the mobile communication system

provided by MEO was poor in terms of its capacity for the establishment and maintenance of Internet

browsing sessions. The performance provided for the same indicator by Vodafone and NOS was bad.

Average Web Page Transfer Time is poor for MEO and Vodafone, and bad for NOS.

In the municipality of Vila Flor (Figure 14), the performance of mobile operators is even lower than in

Odemira. All operators have bad levels in terms of Internet Browsing Session Termination Rate, in

particular Vodafone, while Average Web Page Transfer Time is poor for MEO and Vodafone, and bad

for NOS.

Internet Navigation performance observed in the municipalities of Odemira and Vila Flor is also

significantly lower than as reported in the major urban centres and along the main roads of mainland

Portugal (Table 7 and Table 8). On the negative side, Average Web Page Transfer Time stands out in

relation to NOS, with the duration reported for this operator three times that reported for NOS in the

major urban centres and along the main roads of mainland Portugal.

Table 7 - Internet Navigation (HTTP web browsing): Difference between the results observed in the study performed in Odemira (Sept. 2014) and in the study conducted in the major urban centres and along the main roads of mainland Portugal (30 Sept. - 3 Dec. 2014).

MEO NOS Vodafone

download download download

Internet Navigation

(HTTP web browsing)

Session Termination Rate -10.5% -20.2% -14.0%

Average Web Page Transfer Time [s] 3.0 6.7 2.8

-------------------- -------------------- --------------------

Table 8 - Internet Navigation (HTTP web browsing): Difference between the results observed in the study performed in the municipality of Vila Flor (Sept. 2014) and in the study conducted in the major urban centres and along the main roads of mainland Portugal (30 Sept. - 3 Dec. 2014).

MEO NOS Vodafone

download download download

Internet Navigation

(HTTP web browsing)


Average Web Page Transfer Time [s] 4.2 8.0 3.2

-------------------- -------------------- --------------------


Figure 13 – Indicators: Data Session Termination Rate and Web Page Transfer Time in the Municipality of Odemira.

Figure 14 - Indicators: Data Session Termination Rate and Web Page Transfer Time in the Municipality of Vila Flor.

87,2%

74,6%

81,4%

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

MEO NOS Vodafone

Data Session Termination Rate Internet Navigation (HTTP web browsing)

5,5

56,4

1,4

10,1

58,8

2,66,

3

58,6

2,3

0

10

20

30

40

50

60

70


Web Page Transfer TimeInternet Navigation (HTTP web browsing)

MEO NOS Vodafone

[s]

73,5%70,2%

63,9%

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

MEO NOS Vodafone

Data Session Termination Rate Internet Navigation (HTTP web browsing)

6,7

56,9

1,6

11,4

58,8

1,8

6,7

57,5

2,9

0

10

20

30

40

50

60

70


Web Page Transfer TimeInternet Navigation (HTTP web browsing)

MEO NOS Vodafone

[s]


Data Transmission Latency

Mobile communication systems have poor average latency, both in Odemira (

Figure 15) and in Vila Flor (

Figure 16), particularly the systems of NOS and Vodafone. The Session Termination Rate varies

93,1%87,4% 89,9%

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

MEO NOS Vodafone

Data Session Termination Rate Latency (PingRTT / 2)

62

665

13

97

781

23

95

995

26

0

200

400

600

800

1.000

1.200


Latency(PingRTT / 2)

MEO NOS Vodafone

[ms]

76,0%81,7%

64,6%

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

MEO NOS Vodafone


69

709

14

83

803

18

84

861

28

0

200

400

600

800

1.000

1.200



MEO NOS Vodafone

[ms]


between acceptable (MEO in Odemira) and poor (NOS and Vodafone in Odemira), and bad (all

operators in Vila Flor).

In relation to the results recorded in the mainland Portugal study, performance is lower in the

municipalities of the present study, with average latency of mobile communication systems that is 2.5 to

3.1 times higher (Table 9 and Table 10).

Figure 15 – Indicators: Data Session Termination Rate and Latency, in the Municipality of Odemira.

Figure 16 – Indicators: Data Session Termination Rate and Latency, in the Municipality of Vila Flor.

Table 9 - Data Transmission Latency (Ping RTT/2): Difference between the results observed in the study performed in Odemira (Sept. 2014) and in the study conducted in the major urban centres and along the main roads of mainland Portugal (30 Sept. to 3 Dec. 2014).

MEO NOS Vodafone

93,1%87,4% 89,9%

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

MEO NOS Vodafone


62

665

13

97

781

23

95

995

26

0

200

400

600

800

1.000

1.200



MEO NOS Vodafone

[ms]

76,0%81,7%

64,6%

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

MEO NOS Vodafone


69

709

14

83

803

18

84

861

28

0

200

400

600

800

1.000

1.200



MEO NOS Vodafone

[ms]


Latency

(PingRTT/2)


Average latency [ms] 39 65 62

-------------------- -------------------- --------------------

Table 10 - Data Transmission Latency (Ping RTT/2): Difference between the results observed in the study performed in the municipality of Vila Flor (Sept. 2014) and in the study conducted in the major urban centres and along the main roads of mainland Portugal (30 Sept. to 3 Dec. 2014).

MEO NOS Vodafone

Latency

(PingRTT/2)


Average latency [ms] 46 51 50

-------------------- -------------------- --------------------

Download - Mobile Communications Systems GSM/UMTS/LTE

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