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Journal of Computer Networks and Communications
Volume 2011, Article ID 470264, 11 pages
http://dx.doi.org/10.1155/2011/470264
Research Article

Prioritizing Signaling Information Transmission in Next Generation Networks

1BH Telecom, Joint Stock Company, Sarajevo, Obala Kulina bana 8, 71000 Sarajevo, Bosnia and Herzegovina
2Faculty of Electrical Engineering and Computing, University of Zagreb, Unska 3, 10000 Zagreb, Croatia
3Department for Informatics and Telecommunication Systems, Ministry of Security of Bosnia and Herzegovina, Trg BiH 1, 71000 Sarajevo, Bosnia and Herzegovina

Received 1 March 2011; Accepted 1 July 2011

Academic Editor: Akhtar Kalam

Copyright © 2011 Jasmina Baraković et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Next generation transport network is characterized by the use of in-band signaling, where Internet Protocol (IP) packets carrying signaling or media information are mixed in transmission. Since transport resources are limited, when any segment of access or core network is congested, IP packets carrying signaling information may be discarded. As a consequence, it may be impossible to implement reachability and quality of service (QoS). Since present approaches are insufficient to completely address this problem, a novel approach is proposed, which is based on prioritizing signaling information transmission. To proof the concept, a simulation study was performed using Network Simulator version 2 (ns-2) and independently developed Session Initiation Protocol (SIP) module. The obtained results were statistically processed using Statistical Package for the Social Sciences (SPSS) version 15.0. Summarizing our research results, several issues are identified for future work.