Abstract
Current IP Multimedia System (IMS) industry faces the issue that the complicated architecture of IMS and the huge early investment in its network construction has slowed down its deployment and service innovation. Furthermore, IMS network also causes more computing and network resource waste than current telecom network becuase no existed method can be used to predict the capacity of data service with guaranteed Quality of Service (QoS) in IMS network. Present research and practice consider that virtualizing IMS core and running it on cloud can be a way to solve these problems. However, current research shows the virtualization brings at least five times longer response delays to IMS and makes it unfeasible to be used. We argue that hardware-assisted virtualization technology can improve the virtual machine performance, and through carefully tuning the virtual machine parameters, the overhead caused by virtual machines can be minimized. We choose OpenIMSCore as an IMS core network, IMS Benchmark SIPp as a traffic generator, design and conduct a performance test. The results show that running IMS core network on virtual machines has comparable response delays with it running on bare boxes. It is feasible to virtualize the IMS core network and run it on private clouds.
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© 2015 Institute for Computer Sciences, Social Informatics and Telecommunications Engineering
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Liao, L., Leung, V.C.M., Chen, M. (2015). Virtualizing IMS Core and Its Performance Analysis. In: Leung, V., Lai, R., Chen, M., Wan, J. (eds) Cloud Computing. CloudComp 2014. Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, vol 142. Springer, Cham. https://doi.org/10.1007/978-3-319-16050-4_5
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DOI: https://doi.org/10.1007/978-3-319-16050-4_5
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