Empirical Review of Basic Concepts of Teletraffic Postulates [ READ ]
D.E. Bassey., J. C. Ogbulezie., R. Umunnah.
Before the advent of the present heterogeneous teletraffic environment, telecommunications’ researchers had postulated different models aimed at appraising the performance of networks. .Some of these concepts were applied by tele-traffic engineers inter-changeably; in spite of the different characteristics of the signals. The study examines some of these related models and their applications in the present telecommunications environment. Network efficiency was measured by varying the capacity of servers using two different Grades of Service (GoS). At GoS of 0.005, the network recorded operating efficiency of 68 per cent. While at GoS of 0.02, it recorded server efficiency of 77 per cent. Network efficiency increased as the number of routes increased. However, as more routes were configured to carry traffic, the study observed a steady growth of network saturation; where increase in number of servers did not correspondingly increase network efficiency, irrespective of the configured GoS. Individual call holding times were also found to be negatively exponentially distributed. The study confirmed that most of these postulates were clearly workable engineering procedures with theoretical leanings. Also, the approximation of discrete repetitions by a continuous queue will be unrealistic, unless the group is large and heavily-loaded. The present inadequacies of some of these models are fairly clear. Subscribers do not have infinite persistence. It is possible for further works to consider slightly more complex queuing behaviour to cope with the present heterogeneous traffic scenario.
D.E. Bassey., J. C. Ogbulezie., R. Umunnah.
Before the advent of the present heterogeneous teletraffic environment, telecommunications’ researchers had postulated different models aimed at appraising the performance of networks. .Some of these concepts were applied by tele-traffic engineers inter-changeably; in spite of the different characteristics of the signals. The study examines some of these related models and their applications in the present telecommunications environment. Network efficiency was measured by varying the capacity of servers using two different Grades of Service (GoS). At GoS of 0.005, the network recorded operating efficiency of 68 per cent. While at GoS of 0.02, it recorded server efficiency of 77 per cent. Network efficiency increased as the number of routes increased. However, as more routes were configured to carry traffic, the study observed a steady growth of network saturation; where increase in number of servers did not correspondingly increase network efficiency, irrespective of the configured GoS. Individual call holding times were also found to be negatively exponentially distributed. The study confirmed that most of these postulates were clearly workable engineering procedures with theoretical leanings. Also, the approximation of discrete repetitions by a continuous queue will be unrealistic, unless the group is large and heavily-loaded. The present inadequacies of some of these models are fairly clear. Subscribers do not have infinite persistence. It is possible for further works to consider slightly more complex queuing behaviour to cope with the present heterogeneous traffic scenario.
