Manageability, the theme for IMS to compete with existing heterogeneous Voice over IP (VoIP) applications, runs over every network element in NGN for security and quality of experience (QoE). Further decomposition of IMS Core Network (CN) has resulted in a rapid increase of signaling traffic. At the same time, the ever rising of applications over signaling, the needs of message validation and s...

In Voice Trunking over ATM (VTOA) technology, the tandem is replaced by three components: Trunk Inter-Working Function (TIWF), Control and Signaling Inter-Working Function (CS-IWF), and ATM Network. This new architecture calls for re-examination of the signaling channel delay issues, which are well-studied and well-specified for TDM networks. In VTOA, the ATM network together with the inter-wor...

− Location Management is the procedure of keeping track of and locating Mobile Terminals (MT’s) in mobile radio communication system so that calls arriving for them can be routed correctly to their current location. The main aim of the Location Management is to track the MT’s using minimum overhead traffic. Since the radio bandwidth is a scarce resource in mobile radio communication systems, it...

The new Stream Control Transmission Protocol (SCTP) was originally standardised for the transport of signaling messages – originating from the Common Channel Signaling System No.7 (SS7) – over IP based networks. Nonetheless, SCTP is a general purpose IP-based reliable transport protocol which is connection oriented and offers message based data transfer. It supports multiple independent message...

Recent traffic measurement studies suggest that the self-similarity observed in packet traffic arises from aggregating individual sources which behave in an ON/OFF manner with heavy-tailed sojourn times in one or both of the states. In this paper, we investigate the connection between general ON/OFF behavior, self-similarity and queueing performance. We use chaotic maps to model general ON/OFF ...

This paper quantifies how differences in regulatory rules toward competition across the states of Arkansas (AR), California (CA), Illinois (IL), New York (NY) and Texas, (TX) impact the level and rate-of-change of infrastructure modernization investment and the level and rate-of-change of various measures of average revenue for the Regional Bell Operating Company (RBOC) serving each state. AR a...

His current research interests include ATM networks (with focus on traac control), diierent aspects related to self-similar traac (parsimonious modeling, fast generation, implications) as well as architectures and protocols for computer networks. He is a member of the IEEE, IEEE CS and ACM. His email address is [email protected]. Masters Degree in Computer Science from Stevens Institute of Tec...

Statistical analysis of high-resolution traffic measurements from a wide range of working packet networks (e.g., Ethernet LANs, WANs, CCSN/SS7, ISDN and VBR video over ATM) have convincingly shown the presence of fractal or self-similar properties in both local area and wide area traffic traces [2, 3, 5, 15, 19]. That means that similar statistical patterns may occur over different time scales ...

The traditional IN conceptual model (INCM) is being questioned regarding applicability to the next generation network infrastructure. Although the enormous efforts conducted by ITU-T to refine the INCM, trough successive capability sets (CS-1,2,3,and CS-4 on the move) it appears that the more flexible IETF proposed architectures and protocols are effectively being considered as an alternative. ...