Virtualized Server Infrastructure for Resilient Voice Communication Service

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Provided by: NEC Corporation
Topic: Data Centers
Format: PDF
The huge earthquake struck Japan on 11th March, 2011, caused a massive congestion of call attempts from mobile phones that resulted in only 5% of accepted connections due to the congestion control by telephone companies. It is an emergent issue to improve resiliency of communication service in anticipation of future disasters and thus communication service infrastructure necessitates the flexibility of its capacity. In this paper, the authors introduce server virtualization technology to provide a flexible communication service infrastructure and design a communication service controller that provisions additional capacity by virtual machines in response to increased call attempts from mobile phones after a disaster.
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