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Service Mobility in Mobile Networks
KTH, School of Information and Communication Technology (ICT).
2014 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

In the current mobile network architecture, network traffic between user equipment (UE) and

services deployed on the public cloud is tromboned towards the anchor point which could lead

to network congestion. Deploying services closer to the UE, for example near the eNodeB, is a

potential solution. The services are deployed on small scale data centers connected to, or collocated

with the eNodeB, called ’eNodeB-Cloud’ (eNBC). Mobility of UEs presents a challenge

for deploying services in an eNBC. When the UE is handed over from one eNodeB to another,

seamless migration of UE context between the service instances running in different eNBCs needs

to be ensured. In this thesis, we propose a Platform as a Service framework to enable UE context

migration between eNBCs. The architecture consists of handover signaling mechanism, network

session migration technology, context transfer protocol and a set of APIs towards the service. The

evaluation of the prototype implementation shows that virtualization causes some extra delays

to the UE context migration time. Whereas when virtualization is omitted, the time taken to

migrate a UE context between two eNBCs is in the order of 12 ms on average, which is within

the limit of handover interruption time between two LTE-eNodeBs.

Place, publisher, year, edition, pages
2014. , 93 p.
TRITA-ICT-EX, 2014:180
Keyword [en]
eNodeB-Cloud, UE Context Migration, Network Session Mobility, Handover Signaling System
URN: urn:nbn:se:kth:diva-166540OAI: diva2:811210
Available from: 2015-05-11 Created: 2015-05-11 Last updated: 2015-05-11Bibliographically approved

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