Wavelength-division multiplexing (WDM) appears to be the solution of choice for providing a faster networking infrastructure that can meet the explosive growth of the Internet. Several different technologies have been developed so far for the transfer of data over WDM, with wavelength routing being the most prominent one. In this paper, we survey two new technologies which are still in their ex...

The Calypso project aims at developing an extremely exible control and service architecture for ATM-based broadband networks. This architecture provides various alternatives to distribute the network and service control functions among clients, servers and diierent network nodes. This means that a control or service function can reside not only in a network node, but in the customer's workstati...

IMS (IP Multimedia Subsystem) is the technology that will merge the Internet (packet switching) with the cellular world (circuit switching). Presence is one of the basic services which is likely to become omnipresent in IMS (IP Multimedia Subsystem). It is the service that allows a user to be informed about the reachability, availability, and willingness of communication of another user. The fl...

Talk given by Kevin McIntyre 1 1 ZARLINK Semiconductors 1 INTRODUCTION. Zarlink Semiconductor is a provider of TDM voice/data switching chips, with the broadest line of TDM switches in the industry establishing a leadership in timing chips for T1/E1 equipment. " Zarlink holds a strong portfolio of intellectual property, numbering about 2,100 patents and pending applications in key technologies ...

Label Assignment and Failure Recovery Approaches for IP Multicast Communication in MPLS Networks Omar Qasem Banimelhem, Ph.D. Concordia University, 2005 Multiprotocol Label Switching (MPLS) is an Internet Engineering Task Force (IETF) framework that provides for the efficient designation, routing, forwarding, and switching of traffic flows through the network. MPLS is widely used for multicast ...

 This work is based on the optical switch architecture proposed in [5][6] to handle variable-length packets such as IP datagrams. This optical switch is based on an AWG device to route packets and is equipped with a fiber delay-line stage as optical input buffer. Unfortunately, this switch would require considerable buffering capability to achieve acceptable performance. A possible solution, s...

In this study we present the architecture for use in high-performance switching networks with support quality of service (QoS) guarantees. Quality of services guarantees in terms of delay, through-put and loss rate can be provided by using mechanism’s support like scheduling and buffer management at switching architecture in packet switching networks. Our architecture is based on a new data str...

For extending of hot-spot of wireless LAN (WLAN), [1] proposes internetworking scheme between WLAN and mobile ad-hoc network (MANET), which employ the same layer-2 protocol with different mode. Compared to internetworking schemes between UMTS (Universal Mobile Telecommunications Systems) and WLAN [3-4], the scheme from [1] has relatively low overhead and latencies because WLAN and MANET are phy...

Multiprotocol Label Switching (MPLS) is the latest technology in the evolution of routing and forwarding mechanisms for the core of the Internet. It ensures the reliable delivery of the Internet services with high transmission speed and lower delays. Traffic Engineering (TE) in MPLS is used for effectively managing the networks for efficient utilization of network resources. MPLS technology mak...

Optical Burst Switching (OBS) is a promising paradigm for the next-generation Internet infrastructure. In this paper, we study the performance of TCP traffic in OBS networks and in particular, the effect of assembly algorithms on TCP traffic. We describe three assembly algorithms in this paper and compare them using the same TCP traffic input. The results show that the performance of the propos...