تحليل ملامح مؤشرات الجودة لشبكات الاتصالات الجيل الثاني في السودان-ولاية الخرطوم 2014 م : دراسة حالة شركات الاتصالات (زين-سوداني-MTN)‎

الملخص EN

This study aimed at investigating the quality of services rendered by the three main telecommunications firms operating in Sudan (Zain ,MTN, and Sudani) , the extent of their compliance with the international and local quality standards and their satisfaction to the needs of individuals, institutions and companies, these vital sectors that the telecommunications companies always endeavour to attract and maintain them through rendering good services them under the supervision of the national tele communications Corporation (NTC) which is always monitoring them to find out whether these companies comply with the standards set by the Corporation or not.

And the (NTC) conducts a periodic surveys on the indicators of quality services for the telecommunications operating in Sudan.

This research has applied profile analysis technique on the results of measurements of the second-generation networks in nine of the big zones that represent a comprehensive geographic coverage of the Khartoum Complex which has been conducted by the (NTC) by using special devices designed specifically for this purpose managed by trained engineers.

The survey was conducted targeting four of the most important quality indicators such as: (Call Setup success rate - Dropped call Rate - Handover Success - Rate-Speech Quality Index).

However, all of these variables were measured in the same measurement scale and the same geographical location and time, the appropriate method for such a study is profile analysis.

As such, the researchers have applied it on the observed indicators and the following important results have arrived at, by testing the hypotheses that have been set for each indicator and the results of the statistical analysis by (SPSS) program.

The first hypothesis test about the parallel of the Call Setup success rate has been rejected which proved that there is an disparity between the three networks.

This disparity is crystal clear in the representation of profiles graphically and the best network that can offers the best ratio of Call Setup success throughout the measurement period that extended for a year.

Also the parallel hypothesis has been rejected in the Dropped call Rate index for the secondgeneration networks.

One of the network has registered the highest percentage of drop call rate that exceeds the standard of the (NTC), and, the parallel hypothesis has been rejected for the two remaining indicators (the Handover Success Rate and Speech Quality Index) which mean that there is an overlap between the networks.

One of the three networks has recorded the highest rates which has classified as the best network that provides excellent services in the second-generation networks, in the final part of the study several recommendations have been presented, the most important of them is to expand the geographical scope of the study and to generalize to cover all cities in Sudan, also submitted proposals for very important studies should be done.