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SDN in TETRA Group Communication - Voice Switching

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.advisor Tuominen, Antti
dc.contributor.author Paulose, Saumya
dc.date.accessioned 2016-11-02T09:26:02Z
dc.date.available 2016-11-02T09:26:02Z
dc.date.issued 2016-10-27
dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/23224
dc.description.abstract TETRA is an open digital trunked professional mobile radio standard developed by European Telecommunications Standard Institute, which defines the various interfaces used in PMR system. Digital Exchange for TETRA (DXT) is the core of Airbus DS TETRA network and it handles signaling, switching and management functions. Switching commands generated during the call creates necessary switch table entries in the Voice Switching Unit in the DXT. Voice frames produced in a group call in TETRA network reaches the Voice Switching Unit. The voice frames are multiplied and modified according to the participants of the group call. The modified packets are then forwarded toward the recipients. In order to provide more virtualization and avoid custom hardware, the concept of Software-Defined Networking (SDN) is used in voice switching. As a result a new system is developed, which performs the exact function of the current Voice Switching Unit. Replacement of current Voice Switching Unit with a combination of a SDN controller and a COTS SDN switch allows performing the switching of voice frames of the group call. Switching commands related to the group call are processed by the SDN application and necessary entries are made inside the SDN switch. As a result when voice frames reaches the SDN switch, the switch performs the table lookups. Upon finding the matching entry, the frames are multiplied and modified according to the details of the recipients. The concept of group tables in SDN switch helps in multiplying and modifying the packets. The modified packets are then forwarded towards the recipients, making the call a success. en
dc.format.extent 8 + 58
dc.language.iso en en
dc.title SDN in TETRA Group Communication - Voice Switching en
dc.type G2 Pro gradu, diplomityö fi
dc.contributor.school Sähkötekniikan korkeakoulu fi
dc.subject.keyword TETRA en
dc.subject.keyword SDN en
dc.subject.keyword OpenFlow en
dc.subject.keyword airbus DS TETRA en
dc.subject.keyword voice switching en
dc.subject.keyword group call en
dc.identifier.urn URN:NBN:fi:aalto-201611025325
dc.programme.major Networking Technology fi
dc.programme.mcode S3029 fi
dc.type.ontasot Master's thesis en
dc.type.ontasot Diplomityö fi
dc.contributor.supervisor Manner, Jukka
dc.programme TLT_2 fi
dc.location P1 fi
local.aalto.openaccess no
dc.rights.accesslevel closedAccess
local.aalto.idinssi 54857
dc.type.publication masterThesis
dc.type.okm G2 Pro gradu, diplomityö


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