With the deployment of ultra-dense HetNets, the inter-cell resource allocation requires new network solutions to handle differentiated user demands, while software defined network (SDN) has emerged as a solution to it for imbalanced user needs, as well as enabling efficient resource utilization and QoE. Under such motivations, we employ a QoE assessment model over SDN to analyze the impact factors on user demands from various dimensions, including network conditions, equipment characteristics, ambient environment, and the user themselves. In this contexts, we propose a dynamic inter-cell wireless resource allocation scheme which expends and provides a more generalized architecture for heterogeneous radio access networks, especially in terms of resource allocation based on QoE requirements with support of SDN. Analytical and experimental results demonstrate that the proposed scheme has improved more than 10% of user QoE satisfaction due to the high efficiency and extra flexibility of optimization over more dimension of heterogeneity provided by radio resource allocation scheme among SDN in HetNets.
['Yaqi Zhang', 'Meng Zhang', 'Xin Zhang', 'Bingjun Han']
Multi-dimension QoE model based optimization for resource allocation in HetNets over SDN