Authors:
Akira Takahashi
1
;
Yoshitaka Takahashi
1
;
Shigeru Keneda
2
and
Yoshikazu Akinaga
2
Affiliations:
1
Waseda University, Japan
;
2
Network Laboratories , NTT DoCoMo,Inc., Japan
Keyword(s):
Teletraffic analysis, loss system, repeated customers, Little’s formula.
Related
Ontology
Subjects/Areas/Topics:
Data Communication Networking
;
Information and Systems Security
;
Network Management
;
Performance Analysis of Wireless Networks
;
Telecommunications
;
Wireless and Mobile Technologies
;
Wireless Information Networks and Systems
Abstract:
In this paper, we analyze and synthesize amulti-server loss systemwith repeated customers, arising out of NTT DoCoMo-developed telecommunication networks. We first provide the numerical solution for a Markovian model with exponential retrial intervals. Applying Little’s formula, we derive the main system performance measures (blocking probability and mean waiting time) for general non-Markovian models. We compare the numerical and simulated results for the Markovian model, in order to check the accuracy of the simulations. Via performing extensive simulations for non-Markovian (non-exponential retrial intervals) models, we find robustness in the blocking probability and the mean waiting time, that is, the performance measures are shown to be insensitive to the retrial intervals distribution except for the mean.