Heuristic algorithms for virtual topology design and routing and wavelength assignment in WDM networks

Skorin-Kapov, Nina

prikaz prve stranice dokumenta Heuristic algorithms for virtual topology design and routing and wavelength assignment in WDM networks

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doctoral thesis

Heuristic algorithms for virtual topology design and routing and wavelength assignment in WDM networks

Zagreb: University of Zagreb, Faculty of Electrical Engineering and Computing, 2006. urn:nbn:hr:168:644346

Skorin-Kapov, Nina

University of Zagreb
Faculty of Electrical Engineering and Computing
Department of Telecommunications

Cite this document

APA 6th Edition

Skorin Kapov, N. (2006). Heuristic algorithms for virtual topology design and routing and wavelength assignment in WDM networks (Doctoral thesis). Zagreb: University of Zagreb, Faculty of Electrical Engineering and Computing. Retrieved from https://urn.nsk.hr/urn:nbn:hr:168:644346

MLA 8th Edition

Skorin Kapov, Nina. "Heuristic algorithms for virtual topology design and routing and wavelength assignment in WDM networks." Doctoral thesis, University of Zagreb, Faculty of Electrical Engineering and Computing, 2006. https://urn.nsk.hr/urn:nbn:hr:168:644346

Chicago 17th Edition

Harvard

Skorin Kapov, N. (2006). 'Heuristic algorithms for virtual topology design and routing and wavelength assignment in WDM networks', Doctoral thesis, University of Zagreb, Faculty of Electrical Engineering and Computing, accessed 30 September 2023, https://urn.nsk.hr/urn:nbn:hr:168:644346

Vancouver

Skorin Kapov N. Heuristic algorithms for virtual topology design and routing and wavelength assignment in WDM networks [Doctoral thesis]. Zagreb: University of Zagreb, Faculty of Electrical Engineering and Computing; 2006 [cited 2023 September 30] Available at: https://urn.nsk.hr/urn:nbn:hr:168:644346

IEEE

N. Skorin Kapov, "Heuristic algorithms for virtual topology design and routing and wavelength assignment in WDM networks", Doctoral thesis, University of Zagreb, Faculty of Electrical Engineering and Computing, Zagreb, 2006. Available at: https://urn.nsk.hr/urn:nbn:hr:168:644346

Cite this item: https://urn.nsk.hr/urn:nbn:hr:168:644346

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Metadata

Title	Heuristic algorithms for virtual topology design and routing and wavelength assignment in WDM networks
Title (croatian)	Heuristički algoritmi za planiranje virtualnih topologija, usmjeravanje i dodjeljivanje valnih duljina u WDM mrežama
Author	Nina Skorin-Kapov
Mentor	Mladen Kos (mentor)
Committee member	Vedran Mornar (član povjerenstva)
Committee member	Mladen Kos (član povjerenstva)
Committee member	Nicholas Puech (član povjerenstva) strani drzavljanin: Nije dostupno
Committee member	Branko Mikac (član povjerenstva)
Committee member	Ignac Lovrek (član povjerenstva)
Granter	University of Zagreb Faculty of Electrical Engineering and Computing (Department of Telecommunications) Zagreb
Defense date and country	2006, Croatia
Scientific / art field, discipline and subdiscipline	TECHNICAL SCIENCES Electrical Engineering Telecommunications and Informatics
Universal decimal classification (UDC)	654 - Telecommunication and telecontrol 621.3 - Electrical engineering
Abstract	This thesis investigates the problem of designing virtual topologies in wavelength routed WDM (Wavelength Division Multiplex) optical networks. In such networks, a virtual topology is created over the physical optical network by establishing all-optical connections, called lightpaths, between pairs of nodes. Transport via a lightpath is entirely in the optical domain. A virtual topology can also be composed of a set of light-trees which optically connect a subset of nodes in the network. In order to establish a virtual topology, it is necessary to determine a set of lightpaths/light-trees, ﬁnd for them corresponding paths in the physical topology and assign wavelengths to them. Finally, packet-switched trafﬁc is routed over the virtual topology. The thesis focuses on the problem of routing and assigning wavelengths to lightpaths and light-trees, and the virtual topology design problem in WDM networks. These problems are NP-complete so heuristic algorithms are needed to help solve them. Proposed are efﬁcient heuristic algorithms for the Routing and Wavelength Assignment (RWA) of static and scheduled lightpath demands. Furthermore, developed is a heuristic for multicast routing and algorithms for static multicast RWA. Virtual Topology Design is investigated considering various objective criteria, and an additional objective criterion is proposed. Efﬁcient heuristic algorithms are developed to help solve this problem. To assess the quality of the solutions obtained by the proposed algorithms, new analytical lower bounds for the corresponding problems are developed.
Abstract (croatian)	Doktorska disertacija istražuje problem planiranja virtualnih topologija u optčkim WDM (Wavelength Division Multiplex) mrežama temeljenim na valnom usmjeravanju. U takvim mrežama, gradi se virtualna topologija nad fizičkom optičkom mrežom uspostavom sve-optičkih kanala, ili svjetlosnih putova, između parova čvorova. Transport po svjetlosnim putovima odvija se isključivo u optičkoj domeni. Virtualna topologija se također može sastojati od skupa svjetlosnih stabala koji sve-optički povezuju skup čvorova. Kako bi se uspostavila virtualna topologija, potrebno je odrediti skup zahtjeva za svjetlosnim putovima/stablima, naći njima odgovarajuće putove u fizičkoj topologiji te im dodijeliti valne duljine. Paketski promet se potom usmjerava kroz uspostavljenu virtualnu topologiju. Istraživanja su fokusirana na problem usmjeravanja i dodjeljivanja valnih duljina svjetlosnim putovima i stablima, te općeniti problem planiranja virtualnih topologija u WDM mrežama. Ovi problemi su NP-potpuni optimizacijski problemi, te su potrebni heuristički algoritmima za njihovo rješavanje. Predloženi su efikasni heuristički algoritmi za probleme usmjeravanja i dodjeljivanja valnih duljina statičkim te raspoređenim zahtjevima za svjetlosnim putovima. Nadalje, razvijen je efikasan heuristički algoritam za višeodredišno usmjeravanje, te heuristike za problem statičkog višeodredišnog usmjeravanja i dodjeljivanja valnih duljina. Istraženo je planiranje virtualnih topologija uzimajući u obzir više ciljeva, te je predložen dodatan kriterij pri planiranju virtualnih topologija. Razvijeni su efikasni heuristicki algoritmi za rješavanje ovog problema. Kako bismo utvrdili kvalitetu rješenja dobivenih predloženim algoritmima, razvijene su nove analitičke donje granice za navedene probleme.
Keywords
Keywords (croatian)
Language	english
URN:NBN	urn:nbn:hr:168:644346
Study programme	Title: Doctoral study programme "Electrical Engineering and Computing" Study programme type: university Study level: postgraduate Academic / professional title: doktor/doktorica znanosti, po-dručje tehničkih znanosti (doktor/doktorica znanosti, po-dručje tehničkih znanosti)
Type of resource	Text
File origin	Born digital
Access conditions	Closed access
Terms of use
Repository	FER Repository
Created on	2019-07-19 10:41:05