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Disruption tolerance for SIP

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.advisor Ott, Jörg; Prof.
dc.contributor.author Lu, Xiaojun
dc.date.accessioned 2011-12-08T09:50:50Z
dc.date.available 2011-12-08T09:50:50Z
dc.date.issued 2008
dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/1095
dc.description.abstract The wireless networks have been built with versatile wireless network technology, including both wide area wireless networks and local area wireless networks. In such heterogeneous network environment, mobile users may experience either short or long interruption for different reasons while having a multimedia conversation. A lot of emphasis is concentrated on improving radio signal and enhancing seamless handover. However, recovery and backup multimedia conversation from a temporary network failure is also an interesting topic to be discussed. In this thesis, a SIP-based communication with enabling of disruption tolerance mechanism is introduced. We present the idea of media stream and SIP signaling based detection and recovery mechanisms, and come with an implementation of the prototype. The disruption tolerance functions include the ways of detecting network failure, storing the conversation during the meanwhile of the network disconnection, recover the previous broken multimedia session and replay the unheard voice. A brief experimental SIP network is built to evaluate the disruption tolerance functions of the software prototype. The result of the experimentation shows that the multimedia session can be recovered from the broken session in a short time, and the important conversation will not be lost during the short network disconnection. The replayed voice brings a delay to the recovered conversation which is not good experience for the users. However, the delayed conversation is much better than losing the conversation. en
dc.format.extent vii, 68
dc.format.mimetype application/pdf
dc.language.iso en en
dc.publisher Helsinki University of Technology en
dc.publisher Teknillinen korkeakoulu fi
dc.subject.other Electrical engineering en
dc.title Disruption tolerance for SIP en
dc.type G2 Pro gradu, diplomityö fi
dc.contributor.school Faculty of Electronics, Communications and Automation en
dc.contributor.school Elektroniikan, tietoliikenteen ja automaation tiedekunta fi
dc.contributor.department Department of Communications and Networking en
dc.contributor.department Tietoliikenne- ja tietoverkkotekniikan laitos fi
dc.subject.keyword SIP en
dc.subject.keyword disruption tolerance en
dc.identifier.urn urn:nbn:fi:tkk-012242
dc.type.dcmitype text en
dc.programme.major Networking Technology en
dc.programme.major Tietoverkkotekniikka fi
dc.programme.mcode S-38
dc.type.ontasot Diplomityö fi
dc.type.ontasot Master's thesis en
dc.contributor.supervisor Ott, Jörg; Prof.
dc.programme Tietoliikennetekniikan koulutusohjelma fi
dc.location P1 fi
local.aalto.openaccess yes
local.aalto.digifolder Aalto_11372
dc.rights.accesslevel openAccess
local.aalto.idinssi 36263
dc.type.publication masterThesis
dc.type.okm G2 Pro gradu, diplomityö

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