By Admela Jukan (auth.)
ISBN-10: 3709162475
ISBN-13: 9783709162477
ISBN-10: 3709172683
ISBN-13: 9783709172681
The have to identify wavelength-routed connections in a service-differentiated fash ion is turning into more and more very important as a result of numerous candidate shopper networks (e. g. IP, SDH/SONET, ATM) and the necessities for Quality-of-Service (QoS) de livery inside of delivery layers. Up in the past, the factors for optical community layout and operation have frequently been thought of independently of the higher-layer customer indications (users), i. e. with out considering specific requisites or constraints originating from the clients' differentiation. Wavelength routing for multi-service internet works with functionality promises, in spite of the fact that, must do with even more than discovering a course and allocating wavelengths. The optimisation of wavelength-routed paths should have in mind a couple of person necessities and community con straints, whereas holding the source utilisation and blockading chance as little as pos sible. In a networking situation the place a multi-service operation in WDM networks is thought, whereas facing heterogeneous architectures (e. g. technology-driven, as obvious, or regenerative), effective algorithms and protocols for QoS-differentiated and dynamic allocation of actual assets will playa key function. This paintings examines the improvement of multi-criteria wavelength routing for WDM networks the place a suite of performances is absolute to every one customer community, taking into consideration community homes and actual constraints.
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Extra info for QoS-based Wavelength Routing in Multi-Service WDM Networks
Example text
The principles demonstrated in the project MOON can be used as the starting point for the definition of the TMN resources and the related TMN management information model [ITU3100]. Recently, a stand-alone network operating system for basic functions of WDM-based transport network has been proposed in [OkaOO]. The newly developed operating system was also constructed using the telecommunications management network (TMN) concept. g. connection set-up), while the other operates and administrates single network elements within the network.
Regarding the wavelength routing based on hierarchical wavelength grouping, it can be classified as passive or configurable [Kam96]. g. broadcast star). There is a limit to the number of connections which can be supported by a passive network. This limit depends on many factors such as traffic pattern, type of service supported, or network blocking probability. According to [Kam96], the above limits can be made tighter for a special class of all optical networks called light-trees, which include broadcast star and wavelength routers.
This issue is even more important for wavelength division multiplexing networks, where a single fibre is carrying enormous amount of data and a fibre break has a massive impact on carried traffic. In optical networks based on wavelength division multiplexing (WDM), each wavelength can carry high-bit rate data originating from different users. With increasing demand for new services, the variety and number of user-dependent requirements on optical signals, as well as the complexity of their handling, increases as well.
QoS-based Wavelength Routing in Multi-Service WDM Networks by Admela Jukan (auth.)
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