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Study of Error Sources in Mobile Network Time Synchronization

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.advisor Lundqvist, Jonas
dc.contributor.author Teshome Atsmegiorgis, Asrat
dc.date.accessioned 2014-04-17T09:23:00Z
dc.date.available 2014-04-17T09:23:00Z
dc.date.issued 2014-03-31
dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/12898
dc.description.abstract Mobile networks rely on the availability of accurate synchronization to maintain proper operations and service Quality. TDD-based technologies require high level of frequency stability and accuracy in the air interface while FDD technologies and some advance feature, in LTE and LTE-A, require further phase and time synchronization to function properly. Network synchronization in mobile networks is generally responsible for the distribution of timing references in the RAN via the transport network. While legacy TDM-based backhauls are capable of delivering frequency synchronization, phase and time synchronization require the use of packet-based timing protocols to propagate time information. The performance of packet-based protocols is, however, highly dependent on the performance of the underlying packet network. Network impairments, such as packet delay variations, generally have a significant impact on the performance of packet-based methods. Considering the high level of accuracy required in phase and time synchronization in mobile networks, it is essential that the potential sources of error need to be identified and appropriate mitigation mechanisms be considered in the design and implementation of the timing functionalities. As such, this thesis focuses on investigating the potential sources of error in distributing time information across packet-based backhaul networks so that the clock recovery algorithms will be designed with the proper detection and compensation mechanisms needed to meet the stringent requirements for phase and time synchronization. en
dc.format.extent 72+9
dc.language.iso en en
dc.title Study of Error Sources in Mobile Network Time Synchronization en
dc.type G2 Pro gradu, diplomityö en
dc.contributor.school Sähkötekniikan korkeakoulu fi
dc.subject.keyword mobile networks time synchronization en
dc.subject.keyword frequency synchronization en
dc.subject.keyword phase synchronization en
dc.subject.keyword time synchronization en
dc.subject.keyword packet-based synchronization en
dc.subject.keyword packet-timing protocols en
dc.identifier.urn URN:NBN:fi:aalto-201404181709
dc.programme.major Networking Technology fi
dc.programme.mcode S3029 fi
dc.type.ontasot Diplomityö fi
dc.type.ontasot Master's thesis en
dc.contributor.supervisor Ott, Jörg
dc.programme TLT - Master’s Programme in Communications Engineering fi
dc.location P1 fi
local.aalto.openaccess no
local.aalto.digifolder Aalto_05476
dc.rights.accesslevel closedAccess
local.aalto.idinssi 48915
dc.type.publication masterThesis
dc.type.okm G2 Pro gradu, diplomityö

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