We have started designing a robust cellular network (RoCNet) that combines infrastructure-based (e.g., cellular) and opportunistic networking for disaster controlling and spatial data offloading. The RoCNet provides communication means without an infrastructure network in some cases such as at the time of disaster by using a store-carry-forward fashion as in the Delay Tolerant Network (DTN). When the infrastructure network is available, the RoCNet facilitates the traffic offloading leveraging the store-carry-forward feature considering a degree of traffic congestion, traffic direction, etc. In this paper, we give an overview of the RoCNet concept and show a simulation result as a proof-of-concept work. The result shows RoCNet can spatially offload uplink traffic in the traffic concentration district to the non-congested area.
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