The increasing volume and ratio of packet switched traffic poses new challenges on optical transmission technology applied in telecommunications networks. Retaining efficient operation of networks under the changing traffic load calls for development of new solutions. The paper focuses on two research directions of increasing importance: Optical Burst Switching (OBS) and Optical Packet Switchin...

In novel switching approaches such as Optical Burst Switching, the involved buffers can only provide a degenerate waiting room, with delays restricted to multiples of a basic value, the granularity. Although the resulting performance loss was already studied analytically, previous work is either limited by the assumption of independent arrivals, or it involves a matrix with size growing fast wi...

In this thesis recent research in the area of optical packet switching is reviewed, the main problems in the area are identified and a possible solution to some of the problems, optical burst switching, is studied in more detail. Optical burst switching and the JET protocol are studied by means of a simulation program specially built for this purpose. Optical packet networks are networks, where...

In this paper a new Linear Matrix Inequality (LMI) based switching controller for multiple Bottleneck packet switching Network has been considered. The main goal is to illustrate the effects of the Switching Control methodology on the congestion control problem of the packet switching Networks with dynamically varying parameters such as Link capacity and time delays. The congestion dynamic for ...

In OBS, edge routers aggregate traffic into variable length bursts that are sent unslotted. This limits the amount of processing in the core routers. Header and data are seperated in time, by Toffset. This allows the switch to be correctly configured by the time the data arrives. The data burst can then pass through transparently. Since OBS is bufferless, Toffset decreases by δ in every node. C...

Optical switching will enable core Internet packet switching to scale with future transmission rate increases. Currently proposed optical ATM switches do not allow packet reassembly, which is necessary for packet level forwarding. This results in the requirement to create end to end ATM virtual connections for flows even if they contain only one packet. In electronically switched networks MPOA ...

In this paper, we show the recent progress of photonic network technologies for the new generation network (NWGN). The NWGN is based on new design concepts that look beyond the next generation network (NGN) and the Internet. The NWGN will maintain the sustainability of our prosperous civilization and help resolve various social issues and problems by the use of information and communication tec...

INTRODUCTION This book is about the performance evaluation of high-speed switching fabrics and networks. More simply, it concerns how the next generation of telecommunications technology can be designed, analyzed, and understood. But this idea requires some explanation. The roots of today's high-speed switching technology go back to the advent of the digital computer in the 1940s. For the first...

In the paper an analogic CNN algorithm is presented for packet selection in a fast packet switching fabric. The algorithm, running on a 64×64 CNN-UM platform, is adaptable for optimal routing in a switch consisting of N input and M output links. The paper also includes a switching time analysis and an example of a 16×16 switching case.

Optical-packet switching is an attractive technology geared towards integration of data and optical networking. The immense bandwidth provided by optical networking and the capability to switch packets directly at the optical layer are a powerful combination for the Next Generation Internet where scalability, agility, and performance are important considerations. Early optical-packet switching ...