<?xml version="1.0" encoding="utf-8"?>
<TEI xmlns="http://www.tei-c.org/ns/1.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:hal="http://hal.archives-ouvertes.fr/" xmlns:gml="http://www.opengis.net/gml/3.3/" xmlns:gmlce="http://www.opengis.net/gml/3.3/ce" version="1.1" xsi:schemaLocation="http://www.tei-c.org/ns/1.0 http://api.archives-ouvertes.fr/documents/aofr-sword.xsd">
  <teiHeader>
    <fileDesc>
      <titleStmt>
        <title>HAL TEI export of hal-03200685</title>
      </titleStmt>
      <publicationStmt>
        <distributor>CCSD</distributor>
        <availability status="restricted">
          <licence target="https://creativecommons.org/publicdomain/zero/1.0/">CC0 1.0 - Universal</licence>
        </availability>
        <date when="2026-05-21T02:43:22+02:00"/>
      </publicationStmt>
      <sourceDesc>
        <p part="N">HAL API Platform</p>
      </sourceDesc>
    </fileDesc>
  </teiHeader>
  <text>
    <body>
      <listBibl>
        <biblFull>
          <titleStmt>
            <title xml:lang="en">Fragmentation Metrics in Spectrally-Spatially Flexible Optical Networks</title>
            <author role="aut">
              <persName>
                <forename type="first">Piotr</forename>
                <surname>Lechowicz</surname>
              </persName>
              <email type="md5">5db413f10e1d67e9e78d6a5106ba88d3</email>
              <email type="domain">pwr.edu.pl</email>
              <idno type="idhal" notation="numeric">1096275</idno>
              <idno type="halauthorid" notation="string">2190693-1096275</idno>
              <affiliation ref="#struct-461233"/>
            </author>
            <author role="aut">
              <persName>
                <forename type="first">Massimo</forename>
                <surname>Tornatore</surname>
              </persName>
              <idno type="idhal" notation="numeric">779581</idno>
              <idno type="halauthorid" notation="string">1079700-779581</idno>
              <idno type="ORCID">https://orcid.org/0000-0003-0740-1061</idno>
              <affiliation ref="#struct-125443"/>
            </author>
            <author role="aut">
              <persName>
                <forename type="first">Adam</forename>
                <surname>Włodarczyk</surname>
              </persName>
              <idno type="halauthorid">2190694-0</idno>
              <affiliation ref="#struct-461233"/>
              <affiliation ref="#struct-489889"/>
            </author>
            <author role="aut">
              <persName>
                <forename type="first">Krzysztof</forename>
                <surname>Walkowiak</surname>
              </persName>
              <idno type="halauthorid">1263459-0</idno>
              <affiliation ref="#struct-461233"/>
              <affiliation ref="#struct-489889"/>
            </author>
            <editor role="depositor">
              <persName>
                <forename>Hal</forename>
                <surname>Ifip</surname>
              </persName>
              <email type="md5">2073ac78024b6e13f2714db96e9b1e63</email>
              <email type="domain">inria.fr</email>
            </editor>
          </titleStmt>
          <editionStmt>
            <edition n="v1" type="current">
              <date type="whenSubmitted">2021-04-16 17:08:04</date>
              <date type="whenModified">2026-02-23 15:28:02</date>
              <date type="whenReleased">2021-04-16 17:38:19</date>
              <date type="whenProduced">2019-05-13</date>
              <date type="whenEndEmbargoed">2023-01-01</date>
              <ref type="file" target="https://inria.hal.science/hal-03200685v1/document">
                <date notBefore="2023-01-01"/>
              </ref>
              <ref type="file" subtype="author" n="1" target="https://inria.hal.science/hal-03200685v1/file/484327_1_En_21_Chapter.pdf" id="file-3200685-2810423">
                <date notBefore="2023-01-01"/>
              </ref>
              <ref type="externalLink" target="https://re.public.polimi.it/bitstream/11311/1125926/1/Lechowicz_ONDM_19.pdf"/>
            </edition>
            <respStmt>
              <resp>contributor</resp>
              <name key="200187">
                <persName>
                  <forename>Hal</forename>
                  <surname>Ifip</surname>
                </persName>
                <email type="md5">2073ac78024b6e13f2714db96e9b1e63</email>
                <email type="domain">inria.fr</email>
              </name>
            </respStmt>
          </editionStmt>
          <publicationStmt>
            <distributor>CCSD</distributor>
            <idno type="halId">hal-03200685</idno>
            <idno type="halUri">https://inria.hal.science/hal-03200685</idno>
            <idno type="halBibtex">lechowicz:hal-03200685</idno>
            <idno type="halRefHtml">&lt;i&gt;23th International IFIP Conference on Optical Network Design and Modeling (ONDM)&lt;/i&gt;, May 2019, Athens, Greece. pp.235-247, &lt;a target="_blank" href="https://dx.doi.org/10.1007/978-3-030-38085-4_21"&gt;&amp;#x27E8;10.1007/978-3-030-38085-4_21&amp;#x27E9;&lt;/a&gt;</idno>
            <idno type="halRef">23th International IFIP Conference on Optical Network Design and Modeling (ONDM), May 2019, Athens, Greece. pp.235-247, &amp;#x27E8;10.1007/978-3-030-38085-4_21&amp;#x27E9;</idno>
            <availability status="restricted">
              <licence target="https://creativecommons.org/licenses/by/4.0/">CC BY 4.0 - Attribution<ref corresp="#file-3200685-2810423"/></licence>
            </availability>
          </publicationStmt>
          <seriesStmt>
            <idno type="stamp" n="IFIP-LNCS" corresp="IFIP">IFIP - Lecture Notes in Computer Science</idno>
            <idno type="stamp" n="IFIP">IFIP - International Federation for Information Processing</idno>
            <idno type="stamp" n="IFIP-TC" corresp="IFIP">IFIP Technical Committees </idno>
            <idno type="stamp" n="IFIP-WG" corresp="IFIP">Working Groups</idno>
            <idno type="stamp" n="IFIP-TC6" corresp="IFIP-TC">TC 6: Communication Systems</idno>
            <idno type="stamp" n="IFIP-LNCS-11616" corresp="IFIP-LNCS">Optical Network Design and Modeling</idno>
            <idno type="stamp" n="IFIP-ONDM" corresp="IFIP">Optical Network Design and Modeling</idno>
            <idno type="stamp" n="IFIP-WG6-10" corresp="IFIP-WG">Photonic Networking</idno>
          </seriesStmt>
          <notesStmt>
            <note type="commentary">Part 1: Regular Papers</note>
            <note type="audience" n="2">International</note>
            <note type="invited" n="0">No</note>
            <note type="popular" n="0">No</note>
            <note type="peer" n="1">Yes</note>
            <note type="proceedings" n="1">Yes</note>
          </notesStmt>
          <sourceDesc>
            <biblStruct>
              <analytic>
                <title xml:lang="en">Fragmentation Metrics in Spectrally-Spatially Flexible Optical Networks</title>
                <author role="aut">
                  <persName>
                    <forename type="first">Piotr</forename>
                    <surname>Lechowicz</surname>
                  </persName>
                  <email type="md5">5db413f10e1d67e9e78d6a5106ba88d3</email>
                  <email type="domain">pwr.edu.pl</email>
                  <idno type="idhal" notation="numeric">1096275</idno>
                  <idno type="halauthorid" notation="string">2190693-1096275</idno>
                  <affiliation ref="#struct-461233"/>
                </author>
                <author role="aut">
                  <persName>
                    <forename type="first">Massimo</forename>
                    <surname>Tornatore</surname>
                  </persName>
                  <idno type="idhal" notation="numeric">779581</idno>
                  <idno type="halauthorid" notation="string">1079700-779581</idno>
                  <idno type="ORCID">https://orcid.org/0000-0003-0740-1061</idno>
                  <affiliation ref="#struct-125443"/>
                </author>
                <author role="aut">
                  <persName>
                    <forename type="first">Adam</forename>
                    <surname>Włodarczyk</surname>
                  </persName>
                  <idno type="halauthorid">2190694-0</idno>
                  <affiliation ref="#struct-461233"/>
                  <affiliation ref="#struct-489889"/>
                </author>
                <author role="aut">
                  <persName>
                    <forename type="first">Krzysztof</forename>
                    <surname>Walkowiak</surname>
                  </persName>
                  <idno type="halauthorid">1263459-0</idno>
                  <affiliation ref="#struct-461233"/>
                  <affiliation ref="#struct-489889"/>
                </author>
              </analytic>
              <monogr>
                <title level="m">Lecture Notes in Computer Science</title>
                <meeting>
                  <title>23th International IFIP Conference on Optical Network Design and Modeling (ONDM)</title>
                  <date type="start">2019-05-13</date>
                  <date type="end">2019-05-16</date>
                  <settlement>Athens</settlement>
                  <country key="GR">Greece</country>
                </meeting>
                <editor>Anna Tzanakaki</editor>
                <editor>Manos Varvarigos</editor>
                <editor>Raul Muñoz</editor>
                <editor>Reza Nejabati</editor>
                <editor>Noboru Yoshikane</editor>
                <editor>Markos Anastasopoulos</editor>
                <editor>Johann Marquez-Barja</editor>
                <imprint>
                  <publisher>Springer International Publishing</publisher>
                  <biblScope unit="serie">Optical Network Design and Modeling</biblScope>
                  <biblScope unit="volume">LNCS-11616</biblScope>
                  <biblScope unit="pp">235-247</biblScope>
                  <date type="datePub">2020</date>
                </imprint>
              </monogr>
              <idno type="doi">10.1007/978-3-030-38085-4_21</idno>
            </biblStruct>
          </sourceDesc>
          <profileDesc>
            <langUsage>
              <language ident="en">English</language>
            </langUsage>
            <textClass>
              <keywords scheme="author">
                <term xml:lang="en">Spectrum allocation</term>
                <term xml:lang="en">Space</term>
                <term xml:lang="en">Routing</term>
                <term xml:lang="en">Network optimization</term>
                <term xml:lang="en">Network fragmentation</term>
                <term xml:lang="en">Spectrally-spatially flexible optical networks</term>
              </keywords>
              <classCode scheme="halDomain" n="info">Computer Science [cs]</classCode>
              <classCode scheme="halDomain" n="info.info-ni">Computer Science [cs]/Networking and Internet Architecture [cs.NI]</classCode>
              <classCode scheme="halTypology" n="COMM">Conference papers</classCode>
              <classCode scheme="halOldTypology" n="COMM">Conference papers</classCode>
              <classCode scheme="halTreeTypology" n="COMM">Conference papers</classCode>
            </textClass>
            <abstract xml:lang="en">
              <p>Spectrally-spatially flexible optical networks (SS-FONs) are proposed as a solution for future traffic requirements in optical backbone networks. As SS-FONs operate within flex-grid, the provisioning of lightpaths spanning multiple frequency slots results in spectrum fragmentation, especially in presence of dynamic traffic. Fragmentation, in turn, may lead to blocking of dynamic requests due to the lack of sufficiently-large free spectral windows. In this paper, to reach a better understanding of fragmentation in SS-FON, we extend several metrics used in (single-core) elastic optical networks to measure the fragmentation in SS-FONs. Next, we apply these metrics to a dynamic-routing algorithm with the goal of minimizing bandwidth blocking. Finally, we analyze the impact of spatial continuity constraint (SCC) on the network fragmentation. Simulations run on two representative network topologies show that the root mean square factor metric yields the best performance in terms of blocking when compared to other analyzed metrics.</p>
            </abstract>
            <particDesc>
              <org type="consortium">TC 6</org>
              <org type="consortium">WG 6.10</org>
            </particDesc>
          </profileDesc>
        </biblFull>
      </listBibl>
    </body>
    <back>
      <listOrg type="structures">
        <org type="institution" xml:id="struct-461233" status="VALID">
          <idno type="ROR">https://ror.org/008fyn775</idno>
          <orgName>Wroclaw University of Science and Technology = Politechnika Wroclawska [Wrocław]</orgName>
          <desc>
            <address>
              <addrLine>27 Wybrzeże Wyspiańskiego St50-370 Wrocław</addrLine>
              <country key="PL"/>
            </address>
            <ref type="url">http://pwr.edu.pl/en/</ref>
          </desc>
        </org>
        <org type="institution" xml:id="struct-125443" status="VALID">
          <idno type="ISNI">0000 0004 1937 0327</idno>
          <idno type="ROR">https://ror.org/01nffqt88</idno>
          <orgName>Politecnico di Milano [Milan]</orgName>
          <orgName type="acronym">POLIMI</orgName>
          <desc>
            <address>
              <addrLine>Piazza Leonardo da Vinci, 32 20133 Milano</addrLine>
              <country key="IT"/>
            </address>
            <ref type="url">https://www.polimi.it/</ref>
          </desc>
        </org>
        <org type="laboratory" xml:id="struct-489889" status="VALID">
          <orgName>Department of Systems and Computer Networks [Wroclaw]</orgName>
          <date type="start">2017-04-03</date>
          <desc>
            <address>
              <addrLine>Wyb. Wyspianskiego 27 50-370 Wroclaw Poland</addrLine>
              <country key="PL"/>
            </address>
          </desc>
          <listRelation>
            <relation active="#struct-461233" type="direct"/>
          </listRelation>
        </org>
      </listOrg>
    </back>
  </text>
</TEI>