Software Defined Networking (SDN) and in-network caching are promising technologies in next generation wireless networks. In this paper, motivated by the flow control in SDN, we propose an approach to Software Defined Mobile Networks (SDMNs) with jointly considering in-network cache under uncertain flow rate. We present a flow control problem supporting bandwidth provisioning while providing optimum forwarding strategies and resource allocation. Moreover, due to the centralized working mechanism, the information collected by SDN controller may not be real-time or accurate. To deal with this uncertainty and fluctuation of flows rate, chance constraints is used to pose bandwidth provisioning. Specifically, with recent advances in robust optimization and approximation techniques, we formulate the flow control problem as a robust optimization problem and transform it to a convex problem, which can be solved efficiently. Simulation results are presented to show the effectiveness of the proposed scheme.

Additional Metadata
Keywords Bandwidth provisioning, Flow control, In-network cache, Robust optimization, Software Defined Mobile Networks
Persistent URL dx.doi.org/10.1109/VTCFall.2016.7880918
Conference 84th IEEE Vehicular Technology Conference, VTC Fall 2016
Citation
Liang, C. (Chengchao), & Yu, F.R. (2017). Bandwidth provisioning in cache-enabled software-defined Mobile networks: A robust optimization approach. In IEEE Vehicular Technology Conference. doi:10.1109/VTCFall.2016.7880918