Quality of Service GSM / UMTS - ANACOM

Quali ty of Service

GSM / UMTS Mobile Networks and Services

Survey on the QoS of the Voice (GSM), Video-telephony (UMTS) and

Network Coverage (GSM and WCDMA) Services, in the main Urban

Agglomerations and Major Roads of Mainland Portugal.

November / December 2006

http://www.anacom.pt/template12.jsp?categoryId=238942

http://www.anacom.pt/template12.jsp?categoryId=238942

2 QoS - Mobile Networks and Services / GSM-UMTS

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Survey of Voice, Video-telephony and Network Coverage Services / Nov.-Dec. 2006 3

Index

I Executive Summary ..................................................................................................................................................................5 I.I Framework ..............................................................................................................................................................................5 I.II Main Results and Conclusions...............................................................................................................................................8

1 Quality of Service Assessment .......................................................................................................................................14 1.1 Goal ................................................................................................................................................................................14 1.2 Analyzed Services ..........................................................................................................................................................14

1.2.1 Service Independent (GSM/WCDMA): .............................................................................................................................................................. 14 1.2.2 Telephony Services (GSM/UMTS): ................................................................................................................................................................... 14

2 Methodology ...................................................................................................................................................................15 2.1 Fundamentals.................................................................................................................................................................15 2.2 QoS Indicators................................................................................................................................................................15

2.2.1 Service Independent .......................................................................................................................................................................................... 16 2.2.1.1 Availability of the Radio-electric network (Coverage).............................................................................................................................................................16

2.2.2 Telephony Services............................................................................................................................................................................................ 17 2.2.2.1 Service Accessibility (Voice or Video-telephony) ...................................................................................................................................................................17 2.2.2.2 Time to Establish a Call (Voice or Video-telephony)..............................................................................................................................................................17 2.2.2.3 Call Termination Rate (Voice or Video-telephony).................................................................................................................................................................17 2.2.2.4 Call Audio Quality (Voice or Video-telephony).......................................................................................................................................................................17 2.2.2.5 Video-Telephony Call Video Quality ......................................................................................................................................................................................18

2.3 Measurement Profiles.....................................................................................................................................................20 2.3.1 Coverage............................................................................................................................................................................................................ 20 2.3.2 Telephony Services............................................................................................................................................................................................ 20

2.3.2.1 Voice Service ........................................................................................................................................................................................................................20 2.3.2.2 Video-telephony Service........................................................................................................................................................................................................21

2.4 Test/Measurement and Post-Processing System...........................................................................................................22

3 Study Sample .................................................................................................................................................................23 3.1 Tested Areas ..................................................................................................................................................................23 3.2 Sample Size ...................................................................................................................................................................25 3.3 Data Collection Conditions .............................................................................................................................................26

4 Aggregated Results ........................................................................................................................................................27 4.1 Urban Agglomerations....................................................................................................................................................27

4.1.1 Voice Service (GSM).......................................................................................................................................................................................... 27 4.1.1.1 Service Accessibility and Call Termination Rate Indicators ...................................................................................................................................................27 4.1.1.2 Time to Establish a Call Indicator ..........................................................................................................................................................................................28 4.1.1.3 Voice Call Audio Quality Indicator .........................................................................................................................................................................................28 4.1.1.4 Function Density Probability of The Voice Call Audio Quality Indicator .................................................................................................................................28 4.1.1.5 Function Cumulative Distribution of the Voice Call Audio Quality Indicator............................................................................................................................29

4.1.2 Video-Telephony Service (UMTS) ..................................................................................................................................................................... 30 4.1.2.1 Service Accessibility and Call Termination Rate Indicator .....................................................................................................................................................30 4.1.2.2 Time to Establish a Call Indicator ..........................................................................................................................................................................................31 4.1.2.3 Video-Telephony Call Audio Quality ......................................................................................................................................................................................31 4.1.2.4 Function Density Probability of the Video-Telephony Call Audio Quality Indicator.................................................................................................................31 4.1.2.5 Function Cumulative Distribution of the Video-telephony Call Audio Quality Indicator...........................................................................................................32 4.1.2.6 Video-telephony Call Video Quality de Indicator....................................................................................................................................................................32 4.1.2.7 Function Density Probability of the Video-Telephony Call Video Quality Indicator.................................................................................................................32 4.1.2.8 Function Cumulative Distribution of the Video-telephony Call Video Quality Indicator...........................................................................................................33


4.1.3 Network Coverage ..............................................................................................................................................................................................33 4.1.3.1 GSM ..................................................................................................................................................................................................................................... 33 4.1.3.2 GSM – Function Probability Density...................................................................................................................................................................................... 34 4.1.3.3 GSM - Function Cumulative Distribution ............................................................................................................................................................................... 34 4.1.3.4 WCDMA................................................................................................................................................................................................................................ 34 4.1.3.5 WCDMA - Function Probability Density................................................................................................................................................................................. 35 4.1.3.6 WCDMA - Function Cumulative Distribution.......................................................................................................................................................................... 35

4.2 Major Roads................................................................................................................................................................... 36 4.2.1 Voice Service (GSM) ..........................................................................................................................................................................................36

4.2.1.1 Service Accessibility And Call Termination Rate Indicators................................................................................................................................................... 36 4.2.1.2 Time to Establish a Call Indicator.......................................................................................................................................................................................... 37 4.2.1.3 Voice Call Audio Quality Indicator ......................................................................................................................................................................................... 37 4.2.1.4 Function Probability Density of the Voice Call Audio Quality Indicator .................................................................................................................................. 37 4.2.1.5 Function Cumulative Distribution of the Call Audio Quality Indicator ..................................................................................................................................... 38

4.2.2 Video-Telephony (UMTS) ...................................................................................................................................................................................39 4.2.2.1 Service Accessibility and Call Termination Rate Indicators................................................................................................................................................... 39 4.2.2.2 Time to Establish a Call Indicator.......................................................................................................................................................................................... 40 4.2.2.3 Video-Telephony Call Audio Quality Indicator ....................................................................................................................................................................... 40 4.2.2.4 Function Probability Density of the Video-Telephony Call Audio Quality Indicator ................................................................................................................ 40 4.2.2.5 Function Cumulative Distribution of the Video-Telephony Call Audio Quality Indicator ......................................................................................................... 41 4.2.2.6 Video-Telephony Call Video Quality Indicator ....................................................................................................................................................................... 41 4.2.2.7 Function Probability Density of the Video-Telephony Call Video Quality Indicator ................................................................................................................ 41 4.2.2.8 Function Cumulative Distribution of the Video-Telephony Call Video Quality Indicator ......................................................................................................... 42

4.2.3 Network Coverage ..............................................................................................................................................................................................42 4.2.3.1 GSM ..................................................................................................................................................................................................................................... 42 4.2.3.2 GSM – Function Probability Density...................................................................................................................................................................................... 43 4.2.3.3 GSM – Function Cumulative Distribution .............................................................................................................................................................................. 43 4.2.3.4 WCDMA................................................................................................................................................................................................................................ 43 4.2.3.5 WCDMA – Function Probability Density................................................................................................................................................................................ 44 4.2.3.6 WCDMA – Function Cumulative Distribution......................................................................................................................................................................... 44

4.3 Global............................................................................................................................................................................. 45 4.3.1 Voice Service (GSM) ..........................................................................................................................................................................................45

4.3.1.1 Service Accessibility and Call Termination Rate Indicators................................................................................................................................................... 45 4.3.1.2 Time to Establish a Call Indicator.......................................................................................................................................................................................... 46 4.3.1.3 Voice Call Audio Quality Indicator ......................................................................................................................................................................................... 46 4.3.1.4 Function Probability Density of the Voice Call Audio Quality Indicator .................................................................................................................................. 46 4.3.1.5 Function Cumulative Distribution of the Voice Call Audio Quality I ndicator .......................................................................................................................... 47

4.3.2 Video-Telephony (UMTS) ...................................................................................................................................................................................48 4.3.2.1 Service Accessibility and Call Termination Rate Indicators ................................................................................................................................................... 48 4.3.2.2 Time to Establish a Call Indicator.......................................................................................................................................................................................... 49 4.3.2.3 Video-Telephony Call Audio Quality Indicator ....................................................................................................................................................................... 49 4.3.2.4 Function Probability Density of the Video-telephony Call Audio Quality de ........................................................................................................................... 49 4.3.2.5 Function cumulative distribution of the Video-telephony Audio Quality Indicator................................................................................................................... 50 4.3.2.6 Video-telephony Call Video Quality de Indicator ................................................................................................................................................................... 50 4.3.2.7 Function Probability Density of the Video-Telephony Call Video Quality Indicator ................................................................................................................ 50 4.3.2.8 Function Cumulative Distribution of the Video-telephony Call Video Quality Indicator .......................................................................................................... 51

4.3.3 Network Coverage ..............................................................................................................................................................................................51 4.3.3.1 GSM ..................................................................................................................................................................................................................................... 51 4.3.3.2 GSM – Function Probability Density...................................................................................................................................................................................... 52 4.3.3.3 GSM – Function Cumulative Distribution .............................................................................................................................................................................. 52 4.3.3.4 WCDMA................................................................................................................................................................................................................................ 52 4.3.3.5 WCDMA - Function Probability Density................................................................................................................................................................................. 53 4.3.3.6 WCDMA - Function Cumulative Distribution.......................................................................................................................................................................... 53 4.3.3.7 Coverage Maps .................................................................................................................................................................................................................... 53


I EXECUTIVE SUMMARY

I.I FRAMEWORK

Autoridade Nacional de Comunicações (ANACOM) carried out in November and December 2006 an assessment on the quality of the voice (GSM), video-telephony (UMTS) and network coverage (GSM and WCDMA) mobile services, provided by operators OPTIMUS, TMN and VODAFONE in the main urban agglomerations and major roads of mainland Portugal, by analysing technical parameters that translate the quality perception from the consumer’s standpoint.

This quality assessment presents considerable changes regarding the studies conducted in the last 6 years, with highlight to the reformulation of the methodology used and broadening the analysis to services supported on UMTS networks, which was made possible by the use of new measurement and post-processing equipment recently purchased by ANACOM for this purpose. The new testing techniques and reckoning algorithms implemented by this new measurement system provide results with a higher accuracy and reliability.

With the contribution of operator OPTIMUS, TMN and VODAFONE, the analysis methodology was redefined in is several features, namely regarding the definition of measurement indicators and profiles, and by broadening the analysis to services supported on UMTS networks. However, regarding the studies of previous years, three basic principles were maintained:

a) End-to-end measurements – measured values reflect all the aspects that influence the quality of service.

b) Impartiality – measurements are conducted under equal terms for the three operators (OPTIMUS, TMN and VODAFONE).

c) Objectivity – tests are conducted on a totally automatic way, thus eliminating the subjectivity of human intervention or decision.

The methodological approach followed makes it possible for the analysis of the services to be made independently from the operation of the own networks, e.g., areas with lower coverage or lack of coverage are also considered in the analysis, thus making the results of the study translate into a good indicator of the networks’ global behaviour from the user’s standpoint.

The main quality indicators were analysed, considering the user’s standpoint and the services under


study:

1. Network Coverage – Availability of the GSM and WCDMA (UMTS) radio-electric networks;

2. Service Accessibility (voice or video-telephony) – probability of success when establishing calls;

3. Time to Establish a Call (voice or video-telephony) – period of time that the network takes to establish the communication, after the correct sending of the request (destination telephone number);

4. Call Termination Rate (voice or video-telephony) – Probability for a call, after being established with success, to be maintained during a period of time, ending normally, i.e., according to the users will;

5. Call Audio Quality (voice or video-telephony) – perception of the conversation during a call;

6. Call Video Quality (video-telephony) – perception of the communication’s video feature.

The selection of locations for measurements in this study maintained the criteria followed in the studies carried out in the previous years, and therefore testes were made in all district capitals, broadening the data collection area to the metropolitan regions of Lisbon and Porto, and to the major roads of the Mainland.

The population present in the urban agglomerations that make up the selected sample represents 41.7% of the Portuguese population, according the results of the last Census (2001 Census).

Data collection took place on working days and during normal working hours, between 13 November and 20 December 2006. 23,353 test calls were made, as well as 3,198,504 radio signal level measurements, corresponding to more than 212 hours of measurements along 8,789 kilometres.

Using a representative sample provided results, by operator, with a maximum error below 1.47% on urban agglomerations, and bellow 3.16% on major roads, for a 95% confidence level.

In view of these services’ penetration rate, of the diversity of the terminal equipment that is used, and given each user’s subjective view itself, it is impossible to rigorously reproduce each consumer’s conditions of interaction with the networks. In this context, the results of this study must thus be understood as an indicator of the networks’ behaviour. Their transposition/extrapolation to specific situations requires some prudence, at the risk that biased conclusions might be taken.


The technical and methodological options of this study directly influenced its results and must be taken into account when analyzing the results, namely the following:

• Tests were exclusively based on a technical solution (equipment + software) and performed in a totally automatic way, thereby setting homogenous conditions for the monitoring of the three operators and eliminating the subjectivity inherent to the human user;

• It used NOKIA 6680 terminal equipment;

• Tests were carried out in moving vehicles and with outdoor antennas (without gain);

• Call duration, both for voice and video-telephony, was 120 seconds;

• Voice tests were made with manual selection of the 2G (GSM) infrastructure, while video-telephony tests were made with automatic selections of the 2g or 3G (GSM/UMTS) infrastructure;

• Coverage indicators, specially the WCDMA Coverage, do not take into account networks’ loads (number of simultaneous users and type of services used);

• The new measurement systems call on the most recent testing techniques and implement new reckoning algorithms; therefore, the results produced are not directly comparable with those of the studies carried out by ANACOM in the last 6 years;

• The results of the study only reflect the behaviour of the networks on the places and moments of the measurements;

• On the other hand, operators are permanently improving their networks. The technical interventions necessary for these improvements can cause momentary degradations of the service in the geographic area of intervention.


I.II MAIN RESULTS AND CONCLUSIONS

Results recorded by the quality of service indicators on this study reveal important differences between GSM and UMTS networks.

GSM networks present good coverage levels and a good performance of the voice service, both in urban agglomerations and major roads. UMTS networks did not reach these results. These networks still do not present a good WCDMA coverage, with bad coverage in some areas and even, in some cases, complete lack of service, mainly in major. On the other hand, the video-telephony service has a reasonably good performance in urban agglomerations, but a rather lower one on major roads.

GSM and WCDMA Network Coverage

Network coverage present different results for each analysed technology. GSM has good results, with little differences between operators and among the analysed locations – urban agglomerations and major roads. WCDMA shows poorer results than GSM with considerable differences regarding the locations analysed and also between operators.

On urban areas WCDMA coverage, although lower than GSM, presents good results. Operator TMN reached the lowest results with 97.2% of measurements reaching the “Good Coverage” mark.

CoverageGSM

0.0%

0.0%

0.0%

100.0

%

0.0%

0.0%

0.0%

100.0

%

0.0%

0.0%

0.0%

100.0

%

0%10%20%30%40%50%60%70%80%90%

100%

Good Acceptable Bad Non-existent

OPTIMUS TMN VODAFONE

CoverageWCDMA

0.0%

0.1%

1.0%

98.9%

0.3%

0.5%

2.0%

97.2%

0.0%

0.0%

0.8%

99.2%

0%10%20%30%40%50%60%70%80%90%

100%



Figure 1 – Coverage indicator on Urban Agglomerations.

On major roads, WCDMA coverage is still very far from what is considered suitable for the provision of quality services. All networks recorded areas with bad coverage or even total absence of coverage.


OPTIMUS stands out negatively, with only 82.6% of the measurements reaching “Good” or “Acceptable” quality levels and 17.4% presenting “Bad” or “Non-existent” levels. The best results were obtained by operator VODAFONE with 87.3% of measurements within the “Good” or “Acceptable” levels and 12.7% presenting “Bad” or “Non-existent” levels.

CoverageGSM

0.0%

0.0%

0.1%

99.9%

0.0%

0.0%

0.1%

99.9%

0.0%

0.0%

0.1%

99.8%

0%10%20%30%40%50%60%70%80%90%

100%



CoverageWCDMA

10.3%

7.1%12

.8%

69.8%

7.8%

6.2%10

.6%

75.4%

7.7%

5.0%10

.5%

76.8%

0%10%20%30%40%50%60%70%80%90%

100%



Figure 2 – Coverage indicator on Major Roads.

Voice Service (GSM)

The voice service present good results on all of the analyzed indicators.

Voice ServiceMobile Fixed

99.3%99.5% 98.9%98.6% 99.5%99.7%

0%10%20%30%40%50%60%70%80%90%

100%

Service Accessibility Call Termination Rate


Voice ServiceFixed Mobile

99.3%99.3% 99.1%98.4% 99.6%99.2%

0%10%20%30%40%50%60%70%80%90%

100%


OPTIMUS TMN VODAFONE Figure 3 – Service Accessibility and Call Termination Rate indicators on Urban Agglomerations.

No important differences were registered among operators. Also between urban agglomerations and major roads no major differences were registered regarding the analysed indicators.



98.3%99.3% 98.8%99.1% 99.3%99.3%

0%10%20%30%40%50%60%70%80%90%

100%

Service Accessibiity Call Termination Rate



98.2%99.3% 98.2%98.0% 99.1%98.7%

0%10%20%30%40%50%60%70%80%90%

100%

Service Accessibiity Call Termination Rate

OPTIMUS TMN VODAFONE Figure 4 – Service Accessibility and Call Termination Rate indicators on Major Roads.

Time to Establish a CallMobile Fixed

5.3

12.3

4.3

5.6

16.6

4.24.7

12.1

4.0

02468

1012141618

Average Maximum MinimumOPTIMUS TMN VODAFONE

[s]

Time to Establish a CallFixed Mobilel

6.6

15.9

5.2

7.7

16.6

5.7

6.8

14.4

5.2

02468

1012141618


[s]

Figure 5 – Time to Establish a Call indicator on Urban Agglomerations.


5.1

11.4

4.2

5.7

15.9

4.44.6

10.1

4.1

02468

1012141618


[s]

Time to Establish a CallFixed Mobile

6.4

15.1

5.2

7.8

14.4

5.8

6.7

11.7

5.3

02468

1012141618


[s]

Figure 6 – Time to Establish a Call indicator on Major Roads.


Voice Calls Audio QualityMobile Fixed

3.90

3.97

1.00

3.91

3.97

3.21

3.91

3.97

3.19

0.00.51.01.52.02.53.03.54.04.55.0


[MOS]

Voice Calls Audio QualityFixed Mobile

3.89

3.98

1.00

3.87

3.97

1.46

3.90

3.98

2.59

0.00.51.01.52.02.53.03.54.04.55.0


[MOS]

Figure 7 – Call Audio Quality indicator on Urban Agglomerations.


3.34

3.97

3.89

3.483.9

7

3.91

3.38

3.96

3.90

0.00.51.01.52.02.53.03.54.04.55.0


[MOS]


3.88

3.97

2.95

3.87

3.98

2.80

3.90

3.98

2.53

0.00.51.01.52.02.53.03.54.04.55.0


[MOS]

Figure 8 – Call Audio Quality indicator on Major Roads.

Video-telephony Service (UMTS)

The video-telephony service shows results far below those reordered for the voice service, namely regarding the “Service Accessibility” and “Call Termination Rate” indicators.


Time to Establish a CallMobile Mobile

7.7

22.6

5.7

9.8

26.2

5.66.5

27.0

4.6

0

5

10

15

20

25

30


[s]

Video-telephony ServiceMobile Mobile

98.2%90.5%

96.2%

83.7%

96.7%94.1%

0%10%20%30%40%50%60%70%80%90%

100%


OPTIMUS TMN VODAFONE Figure 9 – Service Accessibility, Call Termination Rate and Time to Establish a Call indicators

on Urban Agglomerations.


7.9

26.8

5.9

9.9

28.8

6.06.7

15.7

4.60

5

10

15

20

25

30

35


[s]


95.5%

56.7%

93.0%

64.8%

90.4%

67.9%

0%10%20%30%40%50%60%70%80%90%

100%


OPTIMUS TMN VODAFONE Figure 10 – Service Accessibility, Call Termination Rate and Time to Establish a Call

indicators on Major Roads.

The “Service Accessibility” indicator shows considerable differences between urban zones and major roads. While it presents good levels on urban areas, the levels recorded on major roads are quite lower. Operator VODAFONE presents the best results with 94.1% and 67.9%, success rates in the establishments of calls on urban agglomerations and on major roads, respectively. The lowest results recorded on urban agglomerations belong to operator TMN, with an 83.7% success rate when establishing a call, while on major roads OPTIMUS reached the lowest rate, with only 56.7% success in the establishments of calls.

The “Call Termination Rate” indicator presents better levels than the “Service Accessibility” indicator, also with fewer differences between urban agglomerations and major roads.


Differences among operators are greater on major roads. Operator OPTIMUS presents the best figures: 98.2%, on urban agglomerations, and 95.5%, on major roads. TMN recorded the lowest results, 96.2% on urban agglomerations, both with VODAFONE, with 90.4% on major roads.

The average time for establishing a call show no major differences between the results observed on urban agglomerations and on major roads. TMN recorded the highest average time, with about 10 seconds. The best average time was recorder by VODAFONE with about 6.5 seconds.

The “Audio Quality” and “Video Quality” indicators showed good results, with little differences between operators and between urban agglomerations and major roads. However, the best average results were obtained by operator VODAFONE, on urban agglomerations.

Video-telephony Calls Audio QualityMobile Mobile

3.86 4.0

6

1.00

3.83 4.0

6

1.00

3.93 4.0

6

1.00

0.00.51.01.52.02.53.03.54.04.55.0


[MOS]


1.46

3.69

3.00

1.41

3.68

2.97

1.62

3.69

3.18

0.00.51.01.52.02.53.03.54.04.55.0


[MOS]

Figure 11 – Call Audio Quality and Call Video Quality indicators on Urban Agglomerations.

Video-telephony Calls Video QualityMobile Mobile

3.81 4.0

6

1.00

3.82 4.0

6

1.00

3.87 4.0

6

1.00

0.00.51.01.52.02.53.03.54.04.55.0


[MOS]


1.20

3.68

2.94

1.37

3.68

3.02

1.34

3.69

3.12

0.00.51.01.52.02.53.03.54.04.55.0


[MOS]

Figure 12 – Call Audio Quality and Call Video Quality indicators on Major Roads.


1 QUALITY OF SERVICE ASSESSMENT

1.1 GOAL

To analyse the quality of telecommunications services, which are supported on Portuguese GSM/UMTS mobile networks, from the user’s standpoint, by conducting automatic end-to-end tests.

1.2 ANALYZED SERVICES

The services that present high usage levels by consumers in general, for each technology, were analysed.

1.2.1 SERVICE INDEPENDENT (GSM/WCDMA):

a. Network Coverage;

1.2.2 TELEPHONY SERVICES (GSM/UMTS):

b. Voice Service (GSM);

c. Video-telephony Service (UMTS);


2 METHODOLOGY

The methodology is based on the performance of end-to-end automatic testes, thus making it possible to identity the quality of service on the field, giving the most realistic perspective of the networks’ performance as possible, from the user’s standpoint.

Measurement collection is made using drive-testes. Besides providing an assessment from the user’s standpoint, this approach makes it possible to have the test made independently from the correct functioning of the networks themselves.

On the other hand, the use of a sole testing system to asses the services provided by the three mobile networks, makes the results highly comparable, regarding time and space.

This approach also considers zones with bad or non-existent coverage in the assessment of mobile networks’ quality of service.

2.1 FUNDAMENTALS

This study’s methodology is based on three basic aspects:

a) End-to-end measurements: measurements reflect all aspects that impact a quality of a service;

b) Impartiality: Measurements are carried out under equal terms for the three operators (OPTIMUS, VODAFONE and TMN);

c) Objectivity: Tests are carried out in a totally automatic way, eliminating the subjectivity inherent to human intervention or decision.

2.2 QOS INDICATORS

From the user’s standpoint, the use of mobile services represents the following stages (different features of the Quality of Service):

a. Network Access – Shows that the mobile network is present and that it is possible to use the services (usually it corresponds to the indication of the network’s name on the screen of the


terminal equipment);

b. Service Access – When the user intends to use a service, the mobile operator should provide the access to that services the fastest way possible (e.g. to establish a voice call);

c. Service Integrity – Corresponds to the Quality of Service (QoS) during its use (e.g. Audio Quality during a voice call);

d. Service Consistency – Corresponds to the way how the use of the service is ended (according or not to the user’s will).

The mains Quality of Service Indicators were analyzed for each of the QoS features.

2.2.1 SERVICE INDEPENDENT

2.2.1.1 AVAILABILITY OF THE RADIO-ELECTRIC NETWORK (COVERAGE)

Probability of the mobile services being available to a user (network coverage).

[ ] 100% tsMeasuremen of No. Total

Services Mobile Available with tsMeasuremen of No.%Network electric-Radio theofty Availabili ×=

Mobile services are considered to be available when the radio-electric signal shows values above the minimum levels that make its use possible.

The testing and measurement system used, through a RF Scanner, continuously measures each network’s signal levels. These measurements are geographically referenced, thus allowing for their representation on maps, making it easy to visualize the coverage levels of mobile networks on the routes under study.

Table 1 – Coverage Levels

Coverage GSM WCDMA Good RxLev ≥ −85 dBm CPICH RSCP ≥ −95 dBm Acceptable −95 dBm ≤ RxLev < −85 dBm −105 dBm ≤ CPICH RSCP < −95 dBm Bad −110 dBm ≤ RxLev < −95 dBm −115 dBm ≤ CPICH RSCP < −105 dBm Non-existent RxLev < −110 dBm CPICH RSCP < −115 dBm


2.2.2 TELEPHONY SERVICES

2.2.2.1 SERVICE ACCESSIBILITY (VOICE OR VIDEO-TELEPHONY)

Probability that the user has of having access to the service (voice or video-telephony), i.e., success probability when establishing a (voice or video-telephony) call.

It is considered that a call was “Established with Success” if it reaches the called terminal (on hears the “calling signal” on the calling terminal).

[ ] 100% CallsEstablish toAttempts of No. Total

Success with dEstablishe Calls of No.%ity Accessibil Service ×=

2.2.2.2 TIME TO ESTABLISH A CALL (VOICE OR VIDEO-TELEPHONY)

Period of time elapsing from the sending of a complete destination (destination telephone number) and the establishment of the call.

[ ]12

t- ts CallEstablish toTime =

t1 – moment when the user presses the send button.

t2 – moment when the call is successfully established (one hears the “calling signal” on the caller terminal).

2.2.2.3 CALL TERMINATION RATE (VOICE OR VIDEO-TELEPHONY)

Probably of a call being maintained, after being established, during a given period of time, ending normally, i.e., according to the user’s will.

[ ] 100% Success with dEstablishe Calls of No.

nTerminatio Normal wirh Calls of No.%min ×=ationRateCallTer

2.2.2.4 CALL AUDIO QUALITY (VOICE OR VIDEO-TELEPHONY)

This indicator quantifies how well the conversation is perceived during a (voice or video-telephony) call. Only calls with normal termination are considered for the reckoning of this indicator.

)f(MOS_ B side

C

)f(MOS_ A side

C

LQO

LQO

=

=

alityallAudioQU

alityallAudioQu


side A – refers to the quality perceived on the side of the mobile terminal (which is moving on the locations under analysis).

side B – refers to the quality perceived from the side of the ISDN fixed terminal, in the case of voice calls, or from the side of the mobile terminal, motionless, in the case of video-telephony calls.

MOS_LQO – Perceived Audio Quality quantification scale (Mean Opinion Score_Listening Quality Objective).

PESQ1 and SQuad-LQ2 where the reckoning algorithms used for voice and video-telephony calls, respectively.

The MOS scale quantifies the effort that it takes to understand a conversation. Its value is 0 (zero) when there is no communication and 5 (five) when the communication is perfect. Value “zero” never shows on the results since they only consider situations where the connection was established and maintained during a given period. “Five” also never shows on the results because the CoDec3, used by mobile networks, do not make possible the existence of such high voice or video quality values (the voice or video quality reached with the usually used CoDec presents MOS values lower than 4.5).

Table 2 – MOS Scale

MOS Quality 5 Excellent 4 Good 3 Acceptable 2 Poor 1 Bad

2.2.2.5 VIDEO-TELEPHONY CALL VIDEO QUALITY

Quantifies the communication’s video quality using the VQuad4 algorithm developed by SwissQual. Only calla that ender normally are considered in the reckoning of this indicator.

)f(MOS Chamadade Vídeo Qualidade =

MOS – Perceived video quality quantification scale (Mean Opinion Score_Video Quality Objective).

The MOS scale present the levels already indicated on Table 2.

1 PESQ – Perceptual Evaluation of Speech Quality. Recommended by ITU-International Telecommunications Union (ITU-T Recommendation P.862 (02/2001); ITU-T Recommendation P.862.1 (11/2003)).

2 SQuad-LQ – SwissQual’s speech quality algorithm for Listening Quality.

3 CoDec – Codifier/De-codifier.

4 VQuad – Objective Model for Video Quality Assessment.


Figure 13 – VQuad algorithm functional diagram


2.3 MEASUREMENT PROFILES5

Tests are conducted in a fully automatic way and using the Seven.Five system (there is no human intervention or decision during the conduction of a test).

Measurements are carried out in moving vehicles and with outdoor antennas (without gain);

Voice tests are made with manual selection of the 2G (GSM) infrastructure, while video-telephony tests are made with automatic selections of the 2G or 3G (GSM/UMTS) infrastructure;

All collected parameters are geographically referenced and can be later represented on digital cartography.

2.3.1 COVERAGE

Network coverage assessment is made by the continuous measurement of the signal levels of each mobile network, along each analyzed route.

Measurements are made through a RF Scanner, so the signal levels measures correspond to the effective levels on each point.

Signal samples are collected from all the radio-electric channels used by the three mobile operators, approximately every second for the GSM technology, and every two and a half seconds of the WCDMA6 technology.

These signal samples sample are later analyzed and only the best results obtained on each measurement point are considered in the GSM coverage and WCDMA coverage indicators.

2.3.2 TELEPHONY SERVICES

2.3.2.1 VOICE SERVICE

To analyze the voice service, test calls are made between mobile terminal equipment and terminal

5 The measurements profile presented here are supported on the technical specifications ETSI TS 102 250, namely on part 5 (ETSI TS 102 250-5 V1.3.1 (2005-11)), and ETSI EG 202 057, namely parts 3 and 4 (ETSI EG 202 057-3 V1.1.1 (2005-04) and ETSI EG 202 057-4 V1.1.1 (2005-10)). 6 Wideband Code Division Multiple Access – Technology used on the radio-electric network of the UMTS communications systems.


equipment of a fixed network (ISDN). These calls are named MOC when they are originated on the mobile network and terminated on the fixed network, and MTC, when they are originated on the fixed terminal and ended on the mobile terminal.

The mobile terminal equipment moves along the studied route.

The time frames for making the calls are started simultaneously for the three operators.

After the call is established, the communication’s audio quality is analyzed, on both ends, according the PESQ algorithm.

Test Parameters:

► Relationship between MOC/MTC: 1/1;

► Duration of the test calls: 120 seconds;

► Time frame for making a test call: 180 seconds;

► Maximum time to establish a call: 20 seconds.

2.3.2.2 VIDEO-TELEPHONY SERVICE

To analyse the video-telephony service, test calls are made between mobile terminal equipment. One of the terminals is kept motionless, on a location with proper coverage, while the other terminal moves along the location under analysis. These calls are named MOC when they are originated on the mobile network that is moving and terminated on motionless terminal. On the opposite situation, the calls are named MTC.

The time frames for making the calls are started simultaneously for the three operators.

After the call is established, the communication’s audio quality is analyzed, on both ends, according the SQuad-LQ and VQuad algorithms (algorithms owned by SwissQual, the supplier of the used testing a measurement equipment).

Test Parameters:

► Relationship between MOC/MTC: 1/1;

► Duration of the test calls: 120 seconds;

► Time frame for making a test call: 210 seconds;


► Maximum time to establish a call: 20 seconds.

► Maximum time to establish the audio/video call: 20 seconds.

2.4 TEST/MEASUREMENT AND POST-PROCESSING SYSTEM

The Seven.Five/NetQual system, recently purchase by ANACOM, was used for measurements on the field and for their post-processing.

Figure 14 – Seven.Five/NetQual System Architecture


3 STUDY SAMPLE

A sample representing the use of these services in Mainland Portugal was chosen for a proper assessment of the quality of Voice (GSM), Video-telephony (UMTS) and Network Coverage (GSM and UMTS) services.

3.1 TESTED AREAS

This study aims to assess the quality of the services provided by mobile networks, as it is perceived by consumers. It would be thus be desirable to conduct measurements in all location where this type of communications is or could be provided, at the limit, considering the whole of Portugal’s geographical area, including the interior of buildings. Understandably, making tests on all these locations is unfeasible.

However, the purpose is not to make exhaustive measures, but to collect an adequate sample that can be used as an indicator of the networks’ overall performance. In this sense, locations where the service is more intensely used were chosen, i.e., the larger urban agglomerations and the major roads.

However, the exclusive adoption of this criterion would lead to an excessive concentration of measurements in the coastline’s most densely populated areas, and therefore, besides this criterion, we decided to consider a geographical distribution of the locations, as a way to contemplate inland regions.

Thus, tests were made in all of the country’s district capitals, thereby broadening the collection area to the greatest Lisbon and Porto areas, and also to the major roads of Mainland Portugal.

The population of the urban agglomerations that make up the selected sample stand for 41.7% of the Portuguese population, according to the results of the last Census (2001).


Table 3 – Locations and corresponding population.

73,136 76,41535,659 37,001

163,981 165,04834,689 37,17055,909 56,280

148,122 159,03956,359 58,56457,151 59,52743,759 44,593

119,319 119,06525,814 26,51163,418 63,106

113,480 112,22788,409 86,35549,928 52,12993,259 93,041

Total 1,222,392 1,246,071

Porto 262,928 266,790Gondomar 163,462 159,547Maia 119,718 117,539Matosinhos 166,275 162,671Vila Nova de Gaia 287,597 280,466

Total 999,980 987,013

Lisbon 556,797 559,248Amadora 174,788 169,507Cascais 168,827 166,539Loures 198,685 193,320Oeiras 160,147 157,152Sintra 363,556 351,976Almada 159,550 156,746Seixal 150,095 146,843Odivelas 132,971 130,569

Total 2,065,416 2,031,900

Overall Total 4,287,788 4,264,984Source: INE - Instituto Nacional de Estatística

Castelo Branco Coimbra

Resident Population Present Population Aveiro Beja

Greater Lisbon

Portalegre Santarém Setúbal Viana do Castelo

Territorial Unit

Vila Real Viseu

Greater Porto

Évora Faro Guarda Leiria

Braga Bragança


Table 4 – Major Roads

Major RoadsLisbon-Cascais-Sintra-Lisbon (A5 / IC19) 60Lisbon-Porto (A1) 325Oeiras-Castelo Branco-Guarda (A9 / A1 / A23) 330Lisbon-Vila Real de Sto. António (A2 / A22) 320Vila Real de Sto. António-Faro-Lagos (EN 125) 130Lisbon-Évora-Elvas (A2 / A6) 210Lisbon-Leiria (A8) 140Porto-Braga-Valença-Viana do Castelo-Porto (A3 / IC1) 240Porto-Bragança (A4 / IP4) 240Aveiro-Viseu-Vilar Formoso (IP5 / A25) 200Vila Real-Figueira da Foz (IP3 / A24 / A14) 215Total 2,410

Approximate Distance (Km)

3.2 SAMPLE SIZE

Table 5 – Sample, for the three analyzed operators.

GSM WCDMAAveiro 6 h 24 380 331 70,488 27,787 185Beja 6 h 08 359 311 66,808 25,107 123Braga 6 h 08 361 316 66,925 26,349 204Bragança 6 h 19 372 324 68,269 27,232 155Castelo Branco 6 h 08 359 314 67,616 25,533 129Coimbra 6 h 28 375 328 70,272 27,692 191Évora 6 h 08 363 320 66,760 22,429 133Faro 6 h 08 362 314 67,339 23,200 105Guarda 6 h 19 372 330 68,416 26,355 154Leiria 6 h 11 362 321 67,823 26,522 139Portalegre 6 h 13 364 316 67,808 26,618 112Santarém 6 h 17 368 320 68,750 26,591 173Setúbal 6 h 11 365 311 67,940 26,135 128Viana do Castelo 6 h 06 360 316 65,866 26,138 129Vila Real 6 h 11 364 321 67,303 26,439 138Viseu 6 h 23 378 323 69,133 26,983 190Greater Porto 18 h 23 1,082 936 200,251 78,653 532Greater Lisbon 36 h 08 2,129 1,851 396,048 151,672 793

Urban Agglomerations Total 154 h 13 9,075 7,903 1,683,815 647,435 3,713

Lisbon-Cascais-Sintra-Lisbon (A5 / IC19) 6 h 35 385 340 71,635 28,217 342Lisbon-Porto (A1) 6 h 35 384 338 71,308 27,293 657Oeiras-Castelo Branco-Guarda (A9 / A1 / A23) 6 h 45 393 346 72,022 23,107 663Lisbon-Vila Real de Sto. António (A2 / A22) 6 h 41 393 338 71,945 27,954 640Vila Real de Sto. António-Faro-Lagos (EN125) 4 h 47 278 244 51,939 20,031 263Lisbon-Évora-Elvas (A2 / A6) 4 h 00 234 201 43,490 15,830 421Lisbon-Leiria (A8) 3 h 01 177 153 32,691 12,602 292Porto-Braga-Valença-Viana do Castelo-Porto (A3 / IC1) 5 h 05 298 253 54,911 21,859 484Porto-Bragança (A4 / IP4) 5 h 47 341 296 62,442 24,563 484Aveiro-Vilar Formoso (IP5 / A25) 3 h 46 218 193 40,451 16,091 401Vila Real-Figueira da Foz (IP3 / A24 / A14) 5 h 07 304 268 55,300 21,573 429

Major Roads Totaç 58 h 09 3,405 2,970 628,134 239,120 5,076

Overall Total 212 h 22 12,480 10,873 2,311,949 886,555 8,789

Majo

r Roa

dsUr

ban

Aggl

omer

atio

ns

Hours of Measurements Voice Calls Video-telephony

CallsMeasurements in Kilometers

Coverage Measurements


3.3 DATA COLLECTION CONDITIONS

The field work took place on working days between 13 November and 20 December.

In the Greater Lisbon and Greater Porto regions, measurement sessions were made from 8h00 to 12h00 and from 16h00 to 20h00. In the remaining urban agglomerations, measurement sessions were made during normal hours on working days.

On each major road, data collection was made in two series of runs, except for the A5/IC19 route, where several runs were made along one day (6h30).


4 AGGREGATED RESULTS

4.1 URBAN AGGLOMERATIONS

4.1.1 VOICE SERVICE (GSM)

Mobile Fixed Fixed Mobile Mobile Fixed Fixed Mobile Mobile Fixed Fixed MobileNumber of Calls 1,539 1,496 1,537 1,495 1,525 1,483Dropped on Establishment 7 10 21 24 5 12Dropped during Call 11 11 17 13 8 6With Normal Termination 1,521 1,475 1,499 1,458 1,512 1,465

Service Accessibility 99.5% 99.3% 98.6% 98.4% 99.7% 99.2%Call Termination Rate 99.3% 99.3% 98.9% 99.1% 99.5% 99.6%Number of Samples (Calls) 1,532 1,486 1,516 1,471 1,520 1,471Average Time [s] 5.3 6.6 5.6 7.7 4.7 6.8Maximum Time [s] 12.3 15.9 16.6 16.6 12.1 14.4Minimum Time [s] 4.3 5.2 4.2 5.7 4.0 5.2Standard Deviation [s] 0.9 1.1 0.7 1.2 0.5 0.8Number of Samples (Calls) 2,995 2,996 2,956 2,957 2,977 2,977Average [MOS] 3.90 3.89 3.91 3.87 3.91 3.90Maximum [MOS] 3.97 3.98 3.97 3.97 3.97 3.98Minomum [MOS] 1.00 1.00 3.21 1.46 3.19 2.59Standard Deviation [MOS] 0.09 0.12 0.06 0.13 0.07 0.09

VODAFONEOPTIMUS TMN

Audi

o Qu

ality

Calls

Es

tabl

ishm

ent

Calls

Mad

e

Mobile Fixed Fixed Mobile Mobile Fixed Fixed Mobile Mobile Fixed Fixed MobileService Accessibility 0.5% 0.6% 0.7% 0.8% 0.4% 0.6%Call Termination Rate 0.6% 0.6% 0.7% 0.6% 0.5% 0.5%Time to Establish a Call 0.044 0.055 0.034 0.062 0.027 0.038Audio Quality [MOS] 0.003 0.004 0.002 0.005 0.002 0.003Confidence Level = 95 %

VODAFONETMN

Prec

ision

Erro

r

OPTIMUS

4.1.1.1 SERVICE ACCESSIBILITY AND CALL TERMINATION RATE INDICATORS


99.3%99.5% 98.9%98.6% 99.5%99.7%

0%10%20%30%40%50%60%70%80%90%

100%




99.3%99.3% 99.1%98.4% 99.6%99.2%

0%10%20%30%40%50%60%70%80%90%

100%




4.1.1.2 TIME TO ESTABLISH A CALL INDICATOR


5.3

12.3

4.3

5.6

16.6

4.24.7

12.1

4.0

02468

1012141618


[s]

Time to Establish a CallFixed Mobilel

6.6

15.9

5.2

7.7

16.6

5.7

6.8

14.4

5.2

02468

1012141618


[s]

4.1.1.3 VOICE CALL AUDIO QUALITY INDICATOR


3.90

3.97

1.00

3.91

3.97

3.21

3.91

3.97

3.19

0.00.51.01.52.02.53.03.54.04.55.0


[MOS]


3.89

3.98

1.00

3.87

3.97

1.46

3.90

3.98

2.59

0.00.51.01.52.02.53.03.54.04.55.0


[MOS]

4.1.1.4 FUNCTION DENSITY PROBABILITY OF THE VOICE CALL AUDIO QUALITY INDICATOR

Voice Calls Audio Quality - Function Probabiliy DensityMobile Fixed

0%10%20%30%40%50%60%70%80%90%

100%

1,0 -

1,11,1

- 1,2

1,2 -

1,31,3

- 1,4

1,4 -

1,51,5

- 1,6

1,6 -

1,71,7

- 1,8

1,8 -

1,91,9

- 2,0

2,0 -

2,12,1

- 2,2

2,2 -

2,32,3

- 2,4

2,4 -

2,52,5

- 2,6

2,6 -

2,72,7

- 2,8

2,8 -

2,92,9

- 3,0

3,0 -

3,13,1

- 3,2

3,2 -

3,33,3

- 3,4

3,4 -

3,53,5

- 3,6

3,6 -

3,73,7

- 3,8

3,8 -

3,93,9

- 4,0

4,0 -

4,14,1

- 4,2

4,2 -

4,34,3

- 4,4

4,4 -

4,54,5

- 5,0

[MOS]

OPTIMUSTMNVODAFONE


Voice Calls Audio Quality - Function Probabiliy DensityFixed Mobile

0%10%20%30%40%50%60%70%80%90%

100%

1,0 -

1,11,1

- 1,2

1,2 -

1,31,3

- 1,4

1,4 -

1,51,5

- 1,6

1,6 -

1,71,7

- 1,8

1,8 -

1,91,9

- 2,0

2,0 -

2,12,1

- 2,2

2,2 -

2,32,3

- 2,4

2,4 -

2,52,5

- 2,6

2,6 -

2,72,7

- 2,8

2,8 -

2,92,9

- 3,0

3,0 -

3,13,1

- 3,2

3,2 -

3,33,3

- 3,4

3,4 -

3,53,5

- 3,6

3,6 -

3,73,7

- 3,8

3,8 -

3,93,9

- 4,0

4,0 -

4,14,1

- 4,2

4,2 -

4,34,3

- 4,4

4,4 -

4,54,5

- 5,0

[MOS]

OPTIMUSTMNVODAFONE

4.1.1.5 FUNCTION CUMULATIVE DISTRIBUTION OF THE VOICE CALL AUDIO QUALITY INDICATOR

Voice Calls Audio Quality - Function Cumulative DistributionMobile Fixed

0%10%20%30%40%50%60%70%80%90%

100%

1,0 1,1 1,2 1,3 1,4 1,5 1,6 1,7 1,8 1,9 2,0 2,1 2,2 2,3 2,4 2,5 2,6 2,7 2,8 2,9 3,0 3,1 3,2 3,3 3,4 3,5 3,6 3,7 3,8 3,9 4,0 4,1 4,2 4,3 4,4 4,5

[MOS]

OPTIMUSTMNVODAFONE

Voice Calls Audio Quality - Function Cumulative DistributionFixed Mobile

0%10%20%30%40%50%60%70%80%90%

100%

1,0 1,1 1,2 1,3 1,4 1,5 1,6 1,7 1,8 1,9 2,0 2,1 2,2 2,3 2,4 2,5 2,6 2,7 2,8 2,9 3,0 3,1 3,2 3,3 3,4 3,5 3,6 3,7 3,8 3,9 4,0 4,1 4,2 4,3 4,4 4,5

[MOS]

OPTIMUSTMNVODAFONE


4.1.2 VIDEO-TELEPHONY SERVICE (UMTS)

OPTIMUS TMN VODAFONEMobile Mobile Mobile Mobile Mobile Mobile

Number of Calls 2,631 2,623 2,649Dropped on Establishment 249 428 156Dropped during Call 43 83 82With Normal Termination 2,339 2,112 2,411

Service Accessibility 90.5% 83.7% 94.1%Call Termination Rate 98.2% 96.2% 96.7%Number of Samples (Calls) 2,382 2,195 2,493Average Time [s] 7.7 9.8 6.5Maximum Time [s] 22.6 26.2 27.0Minimum Time [s] 5.7 5.6 4.6Standard Deviation [s] 1.4 2.3 1.7Number of Samples (Calls) 4,668 4,199 4,813Average [MOS] 3.86 3.83 3.93Maximum [MOS] 4.06 4.06 4.06Minomum [MOS] 1.00 1.00 1.00Standard Deviation [MOS] 0.28 0.38 0.22Number of Samples (Calls) 4,659 4,183 4,803Average [MOS] 3.00 2.97 3.18Maximum [MOS] 3.69 3.68 3.69Minomum [MOS] 1.46 1.41 1.62Standard Deviation [MOS] 0.54 0.58 0.54

Calls

Es

tabl

ishm

ent

Calls

Mad

eVi

deo

Quali

tyAu

dio

Quali

ty


Mobile Mobile Mobile Mobile Mobile MobileService Accessibility 1.2% 1.5% 1.0%Call Termination Rate 0.6% 0.9% 0.8%Time to Establish a Call 0.058 0.096 0.067Audio Quality [MOS] 0.008 0.012 0.006Video Quality [MOS] 0.016 0.018 0.015Confidence Level = 95 %

Prec

ision

Erro

r

4.1.2.1 SERVICE ACCESSIBILITY AND CALL TERMINATION RATE INDICATOR


98.2%90.5%

96.2%

83.7%

96.7%94.1%

0%10%20%30%40%50%60%70%80%90%

100%






7.7

22.6

5.7

9.8

26.2

5.66.

5

27.0

4.6

0

5

10

15

20

25

30


[s]

4.1.2.3 VIDEO-TELEPHONY CALL AUDIO QUALITY


3.86 4.

06

1.00

3.83 4.

06

1.00

3.93 4.06

1.00

0.00.51.01.52.02.53.03.54.04.55.0


[MOS]

4.1.2.4 FUNCTION DENSITY PROBABILITY OF THE VIDEO-TELEPHONY CALL AUDIO QUALITY INDICATOR

Video-telephony Calls Audio Quality - Function Probability DensityMobile Mobile

0%10%20%30%40%50%60%70%80%90%

100%

1,0 -

1,11,1

- 1,2

1,2 -

1,31,3

- 1,4

1,4 -

1,51,5

- 1,6

1,6 -

1,71,7

- 1,8

1,8 -

1,91,9

- 2,0

2,0 -

2,12,1

- 2,2

2,2 -

2,32,3

- 2,4

2,4 -

2,52,5

- 2,6

2,6 -

2,72,7

- 2,8

2,8 -

2,92,9

- 3,0

3,0 -

3,13,1

- 3,2

3,2 -

3,33,3

- 3,4

3,4 -

3,53,5

- 3,6

3,6 -

3,73,7

- 3,8

3,8 -

3,93,9

- 4,0

4,0 -

4,14,1

- 4,2

4,2 -

4,34,3

- 4,4

4,4 -

4,54,5

- 5,0

[MOS]

OPTIMUSTMNVODAFONE


4.1.2.5 FUNCTION CUMULATIVE DISTRIBUTION OF THE VIDEO-TELEPHONY CALL AUDIO QUALITY INDICATOR

Video-telephony Calls Audio Quality - Function Cumulative DistributionMobile Mobile

0%10%20%30%40%50%60%70%

80%90%

100%

1,0 1,1 1,2 1,3 1,4 1,5 1,6 1,7 1,8 1,9 2,0 2,1 2,2 2,3 2,4 2,5 2,6 2,7 2,8 2,9 3,0 3,1 3,2 3,3 3,4 3,5 3,6 3,7 3,8 3,9 4,0 4,1 4,2 4,3 4,4 4,5

[MOS]

OPTIMUSTMNVODAFONE

4.1.2.6 VIDEO-TELEPHONY CALL VIDEO QUALITY DE INDICATOR


1.46

3.69

3.00

1.41

3.68

2.97

1.62

3.69

3.18

0.00.51.01.52.02.53.03.54.04.55.0


[MOS]

4.1.2.7 FUNCTION DENSITY PROBABILITY OF THE VIDEO-TELEPHONY CALL VIDEO QUALITY INDICATOR

Video-telephony Calls Video Quality - Function Probability DensityMobile Mobile

0%10%20%30%40%50%60%70%80%90%

100%

1,0 -

1,11,1

- 1,2

1,2 -

1,31,3

- 1,4

1,4 -

1,51,5

- 1,6

1,6 -

1,71,7

- 1,8

1,8 -

1,91,9

- 2,0

2,0 -

2,12,1

- 2,2

2,2 -

2,32,3

- 2,4

2,4 -

2,52,5

- 2,6

2,6 -

2,72,7

- 2,8

2,8 -

2,92,9

- 3,0

3,0 -

3,13,1

- 3,2

3,2 -

3,33,3

- 3,4

3,4 -

3,53,5

- 3,6

3,6 -

3,73,7

- 3,8

3,8 -

3,93,9

- 4,0

4,0 -

4,14,1

- 4,2

4,2 -

4,34,3

- 4,4

4,4 -

4,54,5

- 5,0

[MOS]

OPTIMUSTMNVODAFONE


4.1.2.8 FUNCTION CUMULATIVE DISTRIBUTION OF THE VIDEO-TELEPHONY CALL VIDEO QUALITY INDICATOR

Video-telephony Calls Video Quality - Function Cumulative DistributionMobile Mobile

0%10%20%30%40%50%60%70%

80%90%

100%

1,0 1,1 1,2 1,3 1,4 1,5 1,6 1,7 1,8 1,9 2,0 2,1 2,2 2,3 2,4 2,5 2,6 2,7 2,8 2,9 3,0 3,1 3,2 3,3 3,4 3,5 3,6 3,7 3,8 3,9 4,0 4,1 4,2 4,3 4,4 4,5

[MOS]

OPTIMUSTMNVODAFONE

4.1.3 NETWORK COVERAGE

OPTIMUS TMN VODAFONE OPTIMUS TMN VODAFONENumber of Samples (Measurements) 557,416 565,129 561,270 217,027 215,112 215,296Average Signal Level [dBm] -48 -47 -48 -68 -70 -66Maximum Signal Level [dBm] -4 -3 -1 -30 -26 -25Maximum Signal Level [dBm] -107 -110 -109 -124 -124 -122Standard Deviation [dBm] 11 11 11 11 13 12

Good 100.0% 100.0% 100.0% 98.9% 97.2% 99.2%Acceptable 0.0% 0.0% 0.0% 1.0% 2.0% 0.8%Bad 0.0% 0.0% 0.0% 0.1% 0.5% 0.0%Non-existent 0.0% 0.0% 0.0% 0.0% 0.3% 0.0%

GSM WCDMA

Cove

rage

4.1.3.1 GSM

CoverageGSM

100.

0%

0.0% 0.0%

0.0%

100.

0%

0.0% 0.0%

0.0%

99.9

%

0.0%

0.0% 0.0%

0%10%20%30%40%50%60%70%80%90%

100%




4.1.3.2 GSM – FUNCTION PROBABILITY DENSITY

Coverage - Function Density ProbabilityGSM

0%10%20%30%40%50%60%70%80%90%

100%

-135

-130

-125

-120

-115

-110

-105

-100 -9

5

-90

-85

-80

-75

-70

-65

-60

-55

-50

-45

-40

-35

-30

-25

-20

-15

-10 -5

Signal Level - RxLev [dBm]

OPTIMUSTMNVODAFONE

4.1.3.3 GSM - FUNCTION CUMULATIVE DISTRIBUTION

Coverage - Function Cumulative DistributionGSM

0%10%20%30%40%50%60%70%80%90%

100%

-135

-130

-125

-120

-115

-110

-105

-100 -9

5

-90

-85

-80

-75

-70

-65

-60

-55

-50

-45

-40

-35

-30

-25

-20

-15

-10 -5


OPTIMUSTMNVODAFONE

4.1.3.4 WCDMA

CoverageWCDMA

0.0%0.1%1.0%

98.9

%

0.3%

0.5%2.0%

97.2

%

0.0%

0.0%0.8%

99.2

%

0%10%20%30%40%50%60%70%80%90%

100%




4.1.3.5 WCDMA - FUNCTION PROBABILITY DENSITY

Coverage - Function Density ProbabilityWCDMA

0%10%20%30%40%50%60%70%80%90%

100%

-135

-130

-125

-120

-115

-110

-105

-100 -9

5

-90

-85

-80

-75

-70

-65

-60

-55

-50

-45

-40

-35

-30

-25

-20

-15

-10 -5

Signal Level - CPICH RSCP [dBm]

OPTIMUSTMNVODAFONE

4.1.3.6 WCDMA - FUNCTION CUMULATIVE DISTRIBUTION

Coverage - Function Cumulative DistributionWCDMA

0%10%20%30%40%50%60%70%80%90%

100%

-135

-130

-125

-120

-115

-110

-105

-100 -9

5

-90

-85

-80

-75

-70

-65

-60

-55

-50

-45

-40

-35

-30

-25

-20

-15

-10 -5


OPTIMUSTMNVODAFONE


4.2 MAJOR ROADS


Mobile Fixed Fixed Mobile Mobile Fixed Fixed Mobile Mobile Fixed Fixed MobileNumber of Calls 576 560 578 560 573 558Dropped on Establishment 4 4 5 11 4 7Dropped during Call 10 10 7 10 4 5With Normal Termination 562 546 566 539 565 546

Service Accessibility 99.3% 99.3% 99.1% 98.0% 99.3% 98.7%Call Termination Rate 98.3% 98.2% 98.8% 98.2% 99.3% 99.1%Number of Samples (Calls) 572 556 573 549 569 551Average Time [s] 5.1 6.4 5.7 7.8 4.6 6.7Maximum Time [s] 11.4 15.1 15.9 14.4 10.1 11.7Minimum Time [s] 4.2 5.2 4.4 5.8 4.1 5.3Standard Deviation [s] 0.7 0.9 0.7 1.4 0.5 0.7Number of Samples (Calls) 1,107 1,108 1,105 1,105 1,111 1,111Average [MOS] 3.89 3.88 3.91 3.87 3.90 3.90Maximum [MOS] 3.97 3.97 3.97 3.98 3.96 3.98Minomum [MOS] 3.34 2.95 3.48 2.80 3.38 2.53Standard Deviation [MOS] 0.08 0.11 0.06 0.11 0.07 0.10

OPTIMUS TMN

Audi

o Qu

ality

Calls

Es

tabl

ishm

ent

Calls

Mad

e

VODAFONE

Móvel Fixo Fixo Móvel Móvel Fixo Fixo Móvel Móvel Fixo Fixo MóvelService Accessibility 1.1% 1.1% 1.1% 1.5% 1.1% 1.3%Call Termination Rate 1.4% 1.5% 1.3% 1.5% 1.1% 1.2%Time for Establishing a Call 0.060 0.078 0.056 0.114 0.043 0.060Audio Quality 0.005 0.006 0.003 0.006 0.004 0.006Confidence Level = 95 %

TMN

Erro

de

Prec

isão

OPTIMUS VODAFONE



98.3%99.3% 98.8%99.1% 99.3%99.3%

0%10%20%30%40%50%60%70%80%90%

100%




98.2%99.3% 98.2%98.0% 99.1%98.7%

0%10%20%30%40%50%60%70%80%90%

100%






5.1

11.4

4.2

5.7

15.9

4.44.6

10.1

4.1

02468

1012141618


[s]


6.4

15.1

5.2

7.8

14.4

5.8

6.7

11.7

5.3

02468

1012141618


[s]



3.34

3.97

3.89

3.483.9

7

3.91

3.38

3.96

3.90

0.00.51.01.52.02.53.03.54.04.55.0


[MOS]


3.88

3.97

2.95

3.87

3.98

2.80

3.90

3.98

2.53

0.00.51.01.52.02.53.03.54.04.55.0


[MOS]

4.2.1.4 FUNCTION PROBABILITY DENSITY OF THE VOICE CALL AUDIO QUALITY INDICATOR

Voice Calls Audio Quality - Function Probability DensityMobile Fixed

0%10%20%30%40%50%60%70%80%90%

100%

1,0 -

1,11,1

- 1,2

1,2 -

1,31,3

- 1,4

1,4 -

1,51,5

- 1,6

1,6 -

1,71,7

- 1,8

1,8 -

1,91,9

- 2,0

2,0 -

2,12,1

- 2,2

2,2 -

2,32,3

- 2,4

2,4 -

2,52,5

- 2,6

2,6 -

2,72,7

- 2,8

2,8 -

2,92,9

- 3,0

3,0 -

3,13,1

- 3,2

3,2 -

3,33,3

- 3,4

3,4 -

3,53,5

- 3,6

3,6 -

3,73,7

- 3,8

3,8 -

3,93,9

- 4,0

4,0 -

4,14,1

- 4,2

4,2 -

4,34,3

- 4,4

4,4 -

4,54,5

- 5,0

[MOS]

OPTIMUSTMNVODAFONE


Voice Calls Audio Quality - Function Probability DensityFixed Mobile

0%10%20%30%40%50%60%70%80%90%

100%

1,0 -

1,11,1

- 1,2

1,2 -

1,31,3

- 1,4

1,4 -

1,51,5

- 1,6

1,6 -

1,71,7

- 1,8

1,8 -

1,91,9

- 2,0

2,0 -

2,12,1

- 2,2

2,2 -

2,32,3

- 2,4

2,4 -

2,52,5

- 2,6

2,6 -

2,72,7

- 2,8

2,8 -

2,92,9

- 3,0

3,0 -

3,13,1

- 3,2

3,2 -

3,33,3

- 3,4

3,4 -

3,53,5

- 3,6

3,6 -

3,73,7

- 3,8

3,8 -

3,93,9

- 4,0

4,0 -

4,14,1

- 4,2

4,2 -

4,34,3

- 4,4

4,4 -

4,54,5

- 5,0

[MOS]

OPTIMUSTMNVODAFONE

4.2.1.5 FUNCTION CUMULATIVE DISTRIBUTION OF THE CALL AUDIO QUALITY INDICATOR

Voice Calls Audio Quality - Function Cumulative DistributionMobile Fixed

0%10%20%30%40%50%60%70%

80%90%

100%

1,0 1,1 1,2 1,3 1,4 1,5 1,6 1,7 1,8 1,9 2,0 2,1 2,2 2,3 2,4 2,5 2,6 2,7 2,8 2,9 3,0 3,1 3,2 3,3 3,4 3,5 3,6 3,7 3,8 3,9 4,0 4,1 4,2 4,3 4,4 4,5

[MOS]

OPTIMUSTMNVODAFONE

Voice Calls Audio Quality - Function Cumulative DistributionFixed Mobile

0%10%20%30%40%50%60%70%

80%90%

100%

1,0 1,1 1,2 1,3 1,4 1,5 1,6 1,7 1,8 1,9 2,0 2,1 2,2 2,3 2,4 2,5 2,6 2,7 2,8 2,9 3,0 3,1 3,2 3,3 3,4 3,5 3,6 3,7 3,8 3,9 4,0 4,1 4,2 4,3 4,4 4,5

[MOS]

OPTIMUSTMNVODAFONE


4.2.2 VIDEO-TELEPHONY (UMTS)


Number of Calls 984 987 999Dropped on Establishment 426 347 321Dropped during Call 25 45 65With Normal Termination 533 595 613

Service Accessibility 56.7% 64.8% 67.9%Call Termination Rate 95.5% 93.0% 90.4%Number of Samples (Calls) 558 640 678Average Time [s] 7.9 9.9 6.7Maximum Time [s] 26.8 28.8 15.7Minimum Time [s] 5.9 6.0 4.6Standard Deviation [s] 1.9 2.3 1.8Number of Samples (Calls) 1,058 1,175 1,224Average [MOS] 3.81 3.82 3.87Maximum [MOS] 4.06 4.06 4.06Minomum [MOS] 1.00 1.00 1.00Standard Deviation [MOS] 0.39 0.48 0.42Number of Samples (Calls) 1,056 1,169 1,222Average [MOS] 2.94 3.02 3.12Maximum [MOS] 3.68 3.68 3.69Minomum [MOS] 1.20 1.37 1.34Standard Deviation [MOS] 0.53 0.59 0.56

Vide

o Qu

ality

Audi

o Qu

ality

Calls

Es

tabl

ishm

ent

Calls

Mad

e


Mobile Mobile Mobile Mobile Mobile MobileService Accessibility 3.2% 3.1% 3.0%Call Termination Rate 2.1% 2.3% 2.5%Time to Establish a Call 0.157 0.175 0.133Audio Quality [MOS] 0.024 0.027 0.024Video Quality [MOS] 0.032 0.034 0.031Confidence Level = 95 %

Prec

ision

Erro

r



95.5%

56.7%

93.0%

64.8%

90.4%

67.9%

0%10%20%30%40%50%60%70%80%90%

100%






7.9

26.8

5.9

9.9

28.8

6.06.7

15.7

4.6

0

5

10

15

20

25

30

35


[s]

4.2.2.3 VIDEO-TELEPHONY CALL AUDIO QUALITY INDICATOR


3.81 4.

06

1.00

3.82 4.

06

1.00

3.87 4.

06

1.00

0.00.51.01.52.02.53.03.54.04.55.0


[MOS]

4.2.2.4 FUNCTION PROBABILITY DENSITY OF THE VIDEO-TELEPHONY CALL AUDIO QUALITY INDICATOR


0%10%20%30%40%50%60%70%80%90%

100%

1,0 -

1,11,1

- 1,2

1,2 -

1,31,3

- 1,4

1,4 -

1,51,5

- 1,6

1,6 -

1,71,7

- 1,8

1,8 -

1,91,9

- 2,0

2,0 -

2,12,1

- 2,2

2,2 -

2,32,3

- 2,4

2,4 -

2,52,5

- 2,6

2,6 -

2,72,7

- 2,8

2,8 -

2,92,9

- 3,0

3,0 -

3,13,1

- 3,2

3,2 -

3,33,3

- 3,4

3,4 -

3,53,5

- 3,6

3,6 -

3,73,7

- 3,8

3,8 -

3,93,9

- 4,0

4,0 -

4,14,1

- 4,2

4,2 -

4,34,3

- 4,4

4,4 -

4,54,5

- 5,0

[MOS]

OPTIMUSTMNVODAFONE


4.2.2.5 FUNCTION CUMULATIVE DISTRIBUTION OF THE VIDEO-TELEPHONY CALL AUDIO QUALITY INDICATOR


0%10%20%30%40%50%60%70%

80%90%

100%

1,0 1,1 1,2 1,3 1,4 1,5 1,6 1,7 1,8 1,9 2,0 2,1 2,2 2,3 2,4 2,5 2,6 2,7 2,8 2,9 3,0 3,1 3,2 3,3 3,4 3,5 3,6 3,7 3,8 3,9 4,0 4,1 4,2 4,3 4,4 4,5

[MOS]

OPTIMUSTMNVODAFONE

4.2.2.6 VIDEO-TELEPHONY CALL VIDEO QUALITY INDICATOR


1.20

3.68

2.94

1.37

3.68

3.02

1.34

3.69

3.12

0.00.51.01.52.02.53.03.54.04.55.0


[MOS]

4.2.2.7 FUNCTION PROBABILITY DENSITY OF THE VIDEO-TELEPHONY CALL VIDEO QUALITY INDICATOR


0%10%20%30%40%50%60%70%80%90%

100%

1,0 -

1,11,1

- 1,2

1,2 -

1,31,3

- 1,4

1,4 -

1,51,5

- 1,6

1,6 -

1,71,7

- 1,8

1,8 -

1,91,9

- 2,0

2,0 -

2,12,1

- 2,2

2,2 -

2,32,3

- 2,4

2,4 -

2,52,5

- 2,6

2,6 -

2,72,7

- 2,8

2,8 -

2,92,9

- 3,0

3,0 -

3,13,1

- 3,2

3,2 -

3,33,3

- 3,4

3,4 -

3,53,5

- 3,6

3,6 -

3,73,7

- 3,8

3,8 -

3,93,9

- 4,0

4,0 -

4,14,1

- 4,2

4,2 -

4,34,3

- 4,4

4,4 -

4,54,5

- 5,0

[MOS]

OPTIMUSTMNVODAFONE




0%10%20%30%40%50%60%70%

80%90%

100%

1,0 1,1 1,2 1,3 1,4 1,5 1,6 1,7 1,8 1,9 2,0 2,1 2,2 2,3 2,4 2,5 2,6 2,7 2,8 2,9 3,0 3,1 3,2 3,3 3,4 3,5 3,6 3,7 3,8 3,9 4,0 4,1 4,2 4,3 4,4 4,5

[MOS]

OPTIMUSTMNVODAFONE




GSM WCDMA

Cove

rage

4.2.3.1 GSM

CoverageGSM

0.0%0.0%

0.1%

99.9

%

0.0%

0.0%

0.1%

99.9

%

0.0%

0.0%

0.1%

99.8

%

0%10%20%30%40%50%60%70%80%90%

100%





Coverage - Function Probability DensityGSM

0%10%20%30%40%50%60%70%80%90%

100%

-135

-130

-125

-120

-115

-110

-105

-100 -9

5

-90

-85

-80

-75

-70

-65

-60

-55

-50

-45

-40

-35

-30

-25

-20

-15

-10 -5


OPTIMUSTMNVODAFONE

4.2.3.3 GSM – FUNCTION CUMULATIVE DISTRIBUTION


0%10%20%30%40%50%60%70%80%90%

100%

-135

-130

-125

-120

-115

-110

-105

-100 -9

5

-90

-85

-80

-75

-70

-65

-60

-55

-50

-45

-40

-35

-30

-25

-20

-15

-10 -5


OPTIMUSTMNVODAFONE

4.2.3.4 WCDMA

CoverageWCDMA

10.3

%

7.1%12

.8%

69.8

%

7.8%

6.2%10

.6%

75.4

%

7.7%

5.0%10

.5%

76.8

%

0%10%20%30%40%50%60%70%80%90%

100%




4.2.3.5 WCDMA – FUNCTION PROBABILITY DENSITY

Coverage - Function Probability DensityWCDMA

0%10%20%30%40%50%60%70%80%90%

100%

-135

-130

-125

-120

-115

-110

-105

-100 -9

5

-90

-85

-80

-75

-70

-65

-60

-55

-50

-45

-40

-35

-30

-25

-20

-15

-10 -5


OPTIMUSTMNVODAFONE

4.2.3.6 WCDMA – FUNCTION CUMULATIVE DISTRIBUTION


0%10%20%30%40%50%60%70%80%90%

100%

-135

-130

-125

-120

-115

-110

-105

-100 -9

5

-90

-85

-80

-75

-70

-65

-60

-55

-50

-45

-40

-35

-30

-25

-20

-15

-10 -5


OPTIMUSTMNVODAFONE


4.3 GLOBAL


Mobile Fixed Fixed Mobile Mobile Fixed Fixed Mobile Mobile Fixed Fixed MobileNumber of Calls 2,115 2,056 2,115 2,055 2,098 2,041Dropped on Establishment 11 14 26 35 9 19Dropped during Call 21 21 24 23 12 11With Normal Termination 2,083 2,021 2,065 1,997 2,077 2,011

Service Accessibility 99.5% 99.3% 98.8% 98.3% 99.6% 99.1%Call Termination Rate 99.0% 99.0% 98.9% 98.9% 99.4% 99.5%Number of Samples (Calls) 2,104 2,042 2,089 2,020 2,089 2,022Average Time [s] 5.3 6.6 5.6 7.7 4.6 6.8Maximum Time [s] 12.3 15.9 16.6 16.6 12.1 14.4Minimum Time [s] 4.2 5.2 4.2 5.7 4.0 5.2Standard Deviation [s] 0.8 1.1 0.7 1.3 0.5 0.7Number of Samples (Calls) 4,102 4,104 4,061 4,062 4,088 4,088Average [MOS] 3.90 3.89 3.91 3.87 3.91 3.90Maximum [MOS] 3.97 3.98 3.97 3.98 3.97 3.98Minomum [MOS] 1.00 1.00 3.21 1.46 3.19 2.53Standard Deviation [MOS] 0.09 0.12 0.06 0.13 0.07 0.10

VODAFONEOPTIMUS TMN

Audi

o Qu

ality

Calls

Es

tabl

ishm

ent

Calls

Mad

e

Mobile Fixed Fixed Mobile Mobile Fixed Fixed Mobile Mobile Fixed Fixed MobileService Accessibility 0.4% 0.5% 0.6% 0.7% 0.4% 0.5%Call Termination Rate 0.5% 0.5% 0.6% 0.6% 0.4% 0.4%Time to Establish a Call 0.036 0.046 0.029 0.055 0.023 0.032Audio Quality [MOS] 0.003 0.004 0.002 0.004 0.002 0.003Confidence Level = 95 %

VODAFONETMN

Prec

ision

Erro

r

OPTIMUS



99.5% 99.0%98.8% 98.9%99.6% 99.4%

0%10%20%30%40%50%60%70%80%90%

100%




99.0%99.3% 98.9%98.3% 99.5%99.1%

0%10%20%30%40%50%60%70%80%90%

100%






5.3

12.3

4.2

5.6

16.6

4.24.6

12.1

4.0

02468

1012141618


[s]


6.6

15.9

5.2

7.7

16.6

5.7

6.8

14.4

5.2

02468

1012141618


[s]



3.90

3.97

1.00

3.91

3.97

3.21

3.91

3.97

3.19

0.00.51.01.52.02.53.03.54.04.55.0


[MOS]


3.89

3.98

1.00

3.87

3.98

1.46

3.90

3.98

2.53

0.00.51.01.52.02.53.03.54.04.55.0


[MOS]

4.3.1.4 FUNCTION PROBABILITY DENSITY OF THE VOICE CALL AUDIO QUALITY INDICATOR

Voice Calls Audio Quality - Funtion Probability DensityMobile Fixed

0%10%20%30%40%50%60%70%80%90%

100%

1,0 -

1,11,1

- 1,2

1,2 -

1,31,3

- 1,4

1,4 -

1,51,5

- 1,6

1,6 -

1,71,7

- 1,8

1,8 -

1,91,9

- 2,0

2,0 -

2,12,1

- 2,2

2,2 -

2,32,3

- 2,4

2,4 -

2,52,5

- 2,6

2,6 -

2,72,7

- 2,8

2,8 -

2,92,9

- 3,0

3,0 -

3,13,1

- 3,2

3,2 -

3,33,3

- 3,4

3,4 -

3,53,5

- 3,6

3,6 -

3,73,7

- 3,8

3,8 -

3,93,9

- 4,0

4,0 -

4,14,1

- 4,2

4,2 -

4,34,3

- 4,4

4,4 -

4,54,5

- 5,0

[MOS]

OPTIMUSTMNVODAFONE


Qualidade Áudio das Chamadas de Voz - Função Densidade de ProbabilidadeFixo Móvel

0%10%20%30%40%50%60%70%80%90%

100%

1,0 -

1,11,1

- 1,2

1,2 -

1,31,3

- 1,4

1,4 -

1,51,5

- 1,6

1,6 -

1,71,7

- 1,8

1,8 -

1,91,9

- 2,0

2,0 -

2,12,1

- 2,2

2,2 -

2,32,3

- 2,4

2,4 -

2,52,5

- 2,6

2,6 -

2,72,7

- 2,8

2,8 -

2,92,9

- 3,0

3,0 -

3,13,1

- 3,2

3,2 -

3,33,3

- 3,4

3,4 -

3,53,5

- 3,6

3,6 -

3,73,7

- 3,8

3,8 -

3,93,9

- 4,0

4,0 -

4,14,1

- 4,2

4,2 -

4,34,3

- 4,4

4,4 -

4,54,5

- 5,0

[MOS]

OPTIMUSTMNVODAFONE

4.3.1.5 FUNCTION CUMULATIVE DISTRIBUTION OF THE VOICE CALL AUDIO QUALITY I NDICATOR

Voice Calls Audio Quality - Funtion Cumulative DistributionMobile Fixed

0%10%20%30%40%50%60%70%

80%90%

100%

1,0 1,1 1,2 1,3 1,4 1,5 1,6 1,7 1,8 1,9 2,0 2,1 2,2 2,3 2,4 2,5 2,6 2,7 2,8 2,9 3,0 3,1 3,2 3,3 3,4 3,5 3,6 3,7 3,8 3,9 4,0 4,1 4,2 4,3 4,4 4,5

[MOS]

OPTIMUSTMNVODAFONE

tribution

Voice Calls Audio Quality - Funtion Cumulative DistributionFixed Mobile

0%10%20%30%40%50%60%70%

80%90%

100%

1,0 1,1 1,2 1,3 1,4 1,5 1,6 1,7 1,8 1,9 2,0 2,1 2,2 2,3 2,4 2,5 2,6 2,7 2,8 2,9 3,0 3,1 3,2 3,3 3,4 3,5 3,6 3,7 3,8 3,9 4,0 4,1 4,2 4,3 4,4 4,5

[MOS]

OPTIMUSTMNVODAFONE


4.3.2 VIDEO-TELEPHONY (UMTS)


Number of Calls 3,615 3,610 3,648Dropped on Establishment 675 775 477Dropped during Call 68 128 147With Normal Termination 2,872 2,707 3,024

Service Accessibility 81.3% 78.5% 86.9%Call Termination Rate 97.7% 95.5% 95.4%Number of Samples (Calls) 2,940 2,835 3,171Average Time [s] 7.7 9.8 6.5Maximum Time [s] 26.8 28.8 27.0Minimum Time [s] 5.7 5.6 4.6Standard Deviation [s] 1.5 2.3 1.7Number of Samples (Calls) 5,726 5,374 6,037Average [MOS] 3.85 3.83 3.92Maximum [MOS] 4.06 4.06 4.06Minomum [MOS] 1.00 1.00 1.00Standard Deviation [MOS] 0.31 0.40 0.27Number of Samples (Calls) 5,715 5,352 6,025Average [MOS] 2.99 2.99 3.17Maximum [MOS] 3.69 3.68 3.69Minomum [MOS] 1.20 1.37 1.34Standard Deviation [MOS] 0.54 0.58 0.54

Calls

Es

tabl

ishm

ent

Calls

Mad

eVi

deo

Quali

tyAu

dio

Quali

ty


Móvel Móvel Móvel Móvel Móvel MóvelService Accessibility 1.3% 1.4% 1.1%Call Termination Rate 0.6% 0.8% 0.8%Time to Establish a Call 0.056 0.084 0.060Audio Quality [MOS] 0.008 0.011 0.007Video Quality [MOS] 0.014 0.016 0.014Confidence Level = 95 %

Prec

ision

Erro

r



97.7%

81.3%

95.5%

78.5%

95.4%86.9%

0%10%20%30%40%50%60%70%80%90%

100%






7.7

26.8

5.7

9.8

28.8

5.66.5

27.0

4.6

0

5

10

15

20

25

30

35


[s]

4.3.2.3 VIDEO-TELEPHONY CALL AUDIO QUALITY INDICATOR


3.85 4.

06

1.00

3.83 4.

06

1.00

3.92 4.

06

1.00

0.00.51.01.52.02.53.03.54.04.55.0


[MOS]

4.3.2.4 FUNCTION PROBABILITY DENSITY OF THE VIDEO-TELEPHONY CALL AUDIO QUALITY DE


0%10%20%30%40%50%60%70%80%90%

100%

1,0 -

1,11,1

- 1,2

1,2 -

1,31,3

- 1,4

1,4 -

1,51,5

- 1,6

1,6 -

1,71,7

- 1,8

1,8 -

1,91,9

- 2,0

2,0 -

2,12,1

- 2,2

2,2 -

2,32,3

- 2,4

2,4 -

2,52,5

- 2,6

2,6 -

2,72,7

- 2,8

2,8 -

2,92,9

- 3,0

3,0 -

3,13,1

- 3,2

3,2 -

3,33,3

- 3,4

3,4 -

3,53,5

- 3,6

3,6 -

3,73,7

- 3,8

3,8 -

3,93,9

- 4,0

4,0 -

4,14,1

- 4,2

4,2 -

4,34,3

- 4,4

4,4 -

4,54,5

- 5,0

[MOS]

OPTIMUSTMNVODAFONE


4.3.2.5 FUNCTION CUMULATIVE DISTRIBUTION OF THE VIDEO-TELEPHONY AUDIO QUALITY INDICATOR


0%10%20%30%40%50%60%70%

80%90%

100%

1,0 1,1 1,2 1,3 1,4 1,5 1,6 1,7 1,8 1,9 2,0 2,1 2,2 2,3 2,4 2,5 2,6 2,7 2,8 2,9 3,0 3,1 3,2 3,3 3,4 3,5 3,6 3,7 3,8 3,9 4,0 4,1 4,2 4,3 4,4 4,5

[MOS]

OPTIMUSTMNVODAFONE

4.3.2.6 VIDEO-TELEPHONY CALL VIDEO QUALITY DE INDICATOR


1.20

3.69

2.99

1.37

3.68

2.99

1.34

3.69

3.17

0.00.51.01.52.02.53.03.54.04.55.0


[MOS]

4.3.2.7 FUNCTION PROBABILITY DENSITY OF THE VIDEO-TELEPHONY CALL VIDEO QUALITY INDICATOR


0%10%20%30%40%50%60%70%80%90%

100%

1,0 -

1,11,1

- 1,2

1,2 -

1,31,3

- 1,4

1,4 -

1,51,5

- 1,6

1,6 -

1,71,7

- 1,8

1,8 -

1,91,9

- 2,0

2,0 -

2,12,1

- 2,2

2,2 -

2,32,3

- 2,4

2,4 -

2,52,5

- 2,6

2,6 -

2,72,7

- 2,8

2,8 -

2,92,9

- 3,0

3,0 -

3,13,1

- 3,2

3,2 -

3,33,3

- 3,4

3,4 -

3,53,5

- 3,6

3,6 -

3,73,7

- 3,8

3,8 -

3,93,9

- 4,0

4,0 -

4,14,1

- 4,2

4,2 -

4,34,3

- 4,4

4,4 -

4,54,5

- 5,0

[MOS]

OPTIMUSTMNVODAFONE




0%10%20%30%40%50%60%70%

80%90%

100%

1,0 1,1 1,2 1,3 1,4 1,5 1,6 1,7 1,8 1,9 2,0 2,1 2,2 2,3 2,4 2,5 2,6 2,7 2,8 2,9 3,0 3,1 3,2 3,3 3,4 3,5 3,6 3,7 3,8 3,9 4,0 4,1 4,2 4,3 4,4 4,5

[MOS]

OPTIMUSTMNVODAFONE




GSM WCDMA

Cove

rage

4.3.3.1 GSM

CoverageGSM

100.

0%

0.0% 0.0%

0.0%

100.

0%

0.0% 0.0%

0.0%

99.9

%

0.0%

0.0% 0.0%

0%10%20%30%40%50%60%70%80%90%

100%





Coverage - Function Density ProbabilityGSM

0%10%20%30%40%50%60%70%80%90%

100%

-135

-130

-125

-120

-115

-110

-105

-100 -9

5

-90

-85

-80

-75

-70

-65

-60

-55

-50

-45

-40

-35

-30

-25

-20

-15

-10 -5


OPTIMUSTMNVODAFONE

4.3.3.3 GSM – FUNCTION CUMULATIVE DISTRIBUTION


0%10%20%30%40%50%60%70%80%90%

100%

-135

-130

-125

-120

-115

-110

-105

-100 -9

5

-90

-85

-80

-75

-70

-65

-60

-55

-50

-45

-40

-35

-30

-25

-20

-15

-10 -5


OPTIMUSTMNVODAFONE

4.3.3.4 WCDMA

CoverageWCDMA

2.8%

2.0%4.2%

91.0

%

2.3%

2.0%4.4%

91.3

%

2.1%

1.4%3.4%

93.1

%

0%10%20%30%40%50%60%70%80%90%

100%




4.3.3.5 WCDMA - FUNCTION PROBABILITY DENSITY

Coverage - Function Density ProbabilityWCDMA

0%10%20%30%40%50%60%70%80%90%

100%

-135

-130

-125

-120

-115

-110

-105

-100 -9

5

-90

-85

-80

-75

-70

-65

-60

-55

-50

-45

-40

-35

-30

-25

-20

-15

-10 -5


OPTIMUSTMNVODAFONE

4.3.3.6 WCDMA - FUNCTION CUMULATIVE DISTRIBUTION


0%10%20%30%40%50%60%70%80%90%

100%

-135

-130

-125

-120

-115

-110

-105

-100 -9

5

-90

-85

-80

-75

-70

-65

-60

-55

-50

-45

-40

-35

-30

-25

-20

-15

-10 -5


OPTIMUSTMNVODAFONE

4.3.3.7 COVERAGE MAPS

(Following pages)


MAINLAND PORTUGAL OPTIMUS – GSM Coverage


MAINLAND PORTUGAL TMN – GSM Coverage


MAINLAND PORTUGAL VODAFONE – GSM Coverage


MAINLAND PORTUGAL OPTIMUS – WCDMA Coverage


MAINLAND PORTUGAL TMN – WCDMA Coverage


MAINLAND PORTUGAL VODAFONE – WCDMA Coverage


ACRONYMS

CoDec Codifier/De-codifier.

CPICH RSCP Common Pilot Channel, Received Signal Code Power – Level of the signal received by a mobile terminal (WCDMA).

ETSI European Telecommunications Standards Institute

GSM Global System for Mobile communications – Second generation (2G) Mobile Communications System.

ITU International Telecommunications Union

MOS Mean Opinion Score – Quality rate that quantifies the effort that it takes to understand an end-to-end type conversation. Its value is 0 (zero) when there is no communication and 5 (five) when the communication is perfect. Value “zero” never shows on the results since they only consider situations where the connection was established and maintained during a given period. “Five” also never shows on the results because the CoDec7, used by mobile networks, do not make possible the existence of such high voice or video quality values (the voice or video quality reached with the usually used CoDec presents MOS values lower than 4.5).

PESQ Perceptual Evaluation of Speech Quality – Algorithm used in the analysis of the audio quality of a voice communication (Recommended by ITU: ITU-T Recommendation P.862 (02/2001); ITU-T Recommendation P.862.1 (11/2003)).

ISND Integrated Services Digital Network – Technology used on the fixed access network.

RF Radio Frequency.

RxLev Received signal level – Level of the signal received by a mobile terminal (GSM).

Scanner Measurement equipment that collects radio signal levels for each channel of a frequency band.

SQuad-LQ SwissQual’s speech quality algorithm for Listening Quality – Algorithm developed by SwissQual to analyse the audio quality of a communication.

UMTS Universal Mobile Telecommunications System – Third generation (3G) Mobile Communications System.

VQuad Objective Model for Video Quality Assessment – Algorithm used in the analysis of the video quality of communication (developed by SwissQual)

WCDMA Wideband Code Division Multiple Access – Technology used in the radio-electric component of the UMTS communications systems.

7 CoDec – Codifier/De-codifier.


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Documents

Quality of Service GSM / UMTS - ANACOM