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0 | Page Independent Communications Authority of South Africa Pinmill Farm, 164 Katherine Street, Sandton Private Bag X10002, Sandton, 2146 Quality of Service Report: Gauteng 2012 Quarter 2

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Page 1: Quality of Service Report - TechCentraltechcentral.co.za/.../Quality-of-Service-report-for... · In Quarter 2 the Authority conducted Quality of Service (QoS) monitoring of the GSM

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Independent Communications Authority of South Africa Pinmill Farm, 164 Katherine Street, Sandton

Private Bag X10002, Sandton, 2146  

 

 

Quality of Service Report: 

Gauteng 2012 

Quarter 2 

           

                                                                                      

 

 

 

 

   

Page 2: Quality of Service Report - TechCentraltechcentral.co.za/.../Quality-of-Service-report-for... · In Quarter 2 the Authority conducted Quality of Service (QoS) monitoring of the GSM

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1. Introduction  

 

1.1 Executive Summary  

In Quarter 2 the Authority conducted Quality of Service (QoS) monitoring of the GSM Telephony service 

offered by Cell‐C, MTN and Vodacom  in  the Gauteng  region. The Monitoring period  commenced on 

18/07/2012 and  concluded on 27/08/2012 and was  limited  to East Rand, West Rand, Midrand, Vaal 

Triangle and Pretoria.  

 

QoS  is  defined  as  the  collective  effect  of  service  performances  which  determine  the  degree  of 

satisfaction of a user of the service. QoS provides an indication of what the customer experiences when 

using  the mobile network  and  is evaluated  in  terms of  retainability  and  accessibility. Retainability  is 

defined as the ability for a call to stay connected, complete through to a normal call tear down process, 

without abnormally disconnecting on a cell site of interest1. Accessibility is defined as the percentage of 

time  a  user  is  rejected  due  to  the  unavailability  of  system  resources  when  attempting  to  place  a 

call2.The KPI parameters used to measure retainability and accessibility were Drop Call Rate (DCR) and 

Call  Setup  Success  Rate  (CSSR),  respectively.  THE  DCR  parameter  is  regulated  by  the  End‐User  and 

Subscriber Service charter regulations of 2009 whilst the CSSR parameter is not regulated by End‐User 

and  Subscriber  Service  charter  regulations  of  2009;  however,  it  has  been  incorporated  as  per  ITU 

recommendations E.800 and G.1000. 

 

 

2. Results and Analysis 

The summary of the operators’ overall performance arising from the specific quality of service 

parameters and the measured data is shown in tables  1 and 2 below:   

Table 1: Accessibility Measurement Data 

Region  Network Operator  

 CSSR  Target (%)

Gauteng   Vodacom  99.13%  95%

MTN   95.06%  95%

Cell‐C  97.53%  95%

 

 

 

1 Annexure B.2 of ETSI EG 202 057-3 2 GSM 12.04, ETS 300 615.

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Table 2: Retainability: Measurement Data 

Region  Network Operator  

DCR  Target (%) 

Gauteng  Vodacom  0.41%  3%

MTN   0.21%  3%

Cell‐C  0.93%  3%  

2.1.1 Accessibility 

Accessibility statistics for the test area are given in figure 1 below.   

 

Figure 1: Accessibility Statistics

Based on the results above all operators are above the target. Ideally the Call setup Success Rate should 

be greater than 95%.  

 

2.1.2 Retainability 

Retainability  for  voice  is measured  in  terms of dropped  calls.  The  dropped  call  statistics  on  Eastern 

Cape’s network in the test area are reflected in Figure 2 below. 

95

99.13

95.06

97.53

92

93

94

95

96

97

98

99

100

ICASA'starget

Vodacom MTN Cell‐C

CSSR>95%

Gauteng Call Success Set up Rate Average 

ICASA's target

Vodacom

MTN

Cell‐C

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Figure 2: Retainability Statistics   

The Drop Call Rate should be  less than 3% over 6 months. Based on only the snapshot results of this 

monitoring exercise, the operators are all above the target. 

3. Conclusion 

The  Gauteng  QoS monitoring  focused  on  the  following  KPI’s;  Call  Set‐up  Success  Rate  (CSSR)  and 

Dropped  Call  Rate  (DCR)  in  the  tested  areas.  All  operators  attained  the  QoS  target  in  terms  of  

Retainability and Accessibility KPI’s. 

The test methodology adopted provides a snapshot view of  the operators Quality of Service, giving a 

realistic  picture  of  network  performance  from  a  user’s  point  of  view.  The  drive  test  results  do  not 

represent the mobile service provider's overall network performance, and is based on specified routes, 

time of day and particular type of handset. 

  

3

0.32 0.25 0.560

0.5

1

1.5

2

2.5

3

3.5

ICASA'starget

Vodacom MTN Cell‐C

DCR<3%

Gauteng Drop‐Call Rate Average

ICASA's target

Vodacom

MTN

Cell‐C

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4. Appendix A (coverage maps) 

Gauteng: Maps of Signal Level  Retainability  

(i) West Rand Route  

Vodacom  MTN   Cell‐C 

 

 

  

 

  

 

Figure 3: West Rand Route maps 

 

 

 

 

  

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(ii) East Rand  

Vodacom  MTN   Cell‐C 

 

 

  

 

 

 

Figure 4: East Rand maps 

 

   

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(iii) Midrand   

Vodacom  MTN   Cell‐C 

 

 

 

 

 

 

  

Figure 5: Midrand maps 

 

   

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(iv) Vaal Triangle   

(a)   Vereeniging – Sasolburg  

Vodacom  MTN   Cell‐C 

 

 

 

 

 

 

Figure 6: Vereeniging – Sasolburg maps  

 

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(b) Sasolburg ‐ Vereeniging 

 

Vodacom  MTN   Cell‐C 

 

 

 

 

 

 

Figure 7: Sasolburg – Vereeniging maps  

 

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(v) Pretoria  

Vodacom  MTN   Cell‐C 

 

 

 

 

 

  

                                                                                                                                                 Figure 8: Pretoria maps  

 

 

   

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Accessibility  

(I) West Rand Route  

Vodacom  MTN   Cell‐C 

 

 

  

 

  

 

Figure 9: West Rand Route maps 

 

 

 

 

 

 

 

   

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(ii) East Rand  

Vodacom  MTN   Cell‐C 

 

 

  

 

 

 

Figure 10: East Rand maps 

 

   

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(iii) Midrand   

Vodacom  MTN   Cell‐C 

 

 

 

   

 

Figure 11: Midrand maps 

 

   

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(iv) Vaal Triangle   

(a) Vereeniging – Sasolburg (R59 FREEWAY)  

Vodacom  MTN   Cell‐C 

 

 

 

 

 

 

Figure 12: Vereeniging – Sasolburg (R59 FREEWAY) maps  

 

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(b)  Sasolburg R59 FREEWAY ‐ Vereeniging  

Vodacom  MTN   Cell‐C 

 

 

   

 

Figure 13: Sasolburg R59 FREEWAY– Vereeniging maps  

 

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(v) Pretoria  

Vodacom  MTN   Cell‐C 

 

 

 

 

 

  

                                                                                                                                             Figure 14: Pretoria maps  

 

 

   

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