By Gosse Wedzinga (auth.)
ISBN-10: 1461350174
ISBN-13: 9781461350170
ISBN-10: 1461503175
ISBN-13: 9781461503170
All-optical networking is usually believed to be the single resolution for dealing with the ever-increasing calls for in bandwidth, reminiscent of the area large net software.
Optical spine networks successfully in achieving a excessive point of site visitors aggregation by way of multiplexing a number of clients on circuit-switched wavelength paths - the so-called wavelength routing method. against this, the decreased point of site visitors aggregation in entry and metro networks makes wavelength routing options no longer sufficient. In those community parts, packet-interleaved optical time-division multiplexing with its finer and extra dynamic bandwidth allocation is encouraged.
The booklet offers such an process, referred to as photonic slot routing. It illustrates how this method may supply an economical method to deploying all-optical shipping networks, utilizing state-of-the-art optical machine know-how. for this reason, the writer combines DWDM-technology with fastened slot optical switching, and offers a complete description of this procedure within which slots are aligned around the wavelengths to shape teams of data-flows that propagate as a complete contained in the community. working algorithms are constructed, and community functionality is analyzed, either via theoretical research and plenty of simulations of pattern networks.
This paintings may be of specific curiosity to researchers and execs who're lively in photonic networking.
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Additional info for Photonic Slot Routing in Optical Transport Networks
Example text
2 Quality of Service In this section, we assess the quality of the communication service offered by the B-PSR architecture, including connection latency and in-sequence delivery. Connection Latency We define the latency of a connection as the time it takes for a photonic slot to travel from its source end node to its destination end node. The connection latency is bounded by virtue of the TDM transmission control scheme. Once a photonic slot is launched on a connection, it reaches its destination in a time that equals the sum of the propagation delays of the optical links, the time to cross the switching nodes, and the synchronization delays incurred at the switching nodes.
The incoming frame enters a cascade of 2x2 optical switches, each having a fiber delay line at one output and a straight connection at the other output. In each subsequent stage the delay is halved. The optical switches provide a choice of selecting a delay or not. An electronic synchronization circuit compares the arrival time of the frame with the phase of a local frame clock, and generates the setting of the 2 x 2 switches, so that the appropriate delay is introduced to align the input stream with the local frame clock [Haa93].
3), the slot transmission time shall not be less than about 100 ns. 5), the frame length K can be varied by varying the slot transmission time Ts. The frame length can range from 1 to lTt/100nsJ time slots. 4). 10 shows that the constraints on Ts and Tf provide for a frame length ranging from 1 to 100 time slots. 9) 34 PROTONIC SLOT ROUTING IN OPTICAL TRANSPORT NETWORKS 100r-------------~~------------~--------------~ 10 ~ K= 100 Q) oE 1 t: o 'iii '" '~ ~ Q) 0,1 K= 10 ~ 11. 10. Frame transmission time as a function of the slot transmission time, for different values of the frame length K.
Photonic Slot Routing in Optical Transport Networks by Gosse Wedzinga (auth.)
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