Spectrum Allocation in Cellular Networks with Wireless In-Band Backhaul

It is expected that future cellular networks will be densely deployed with both macro cells and small cells to meet the ever-increasing traffic demand, and a cost-effective and reliable backhaul connectivity will be essential to such deployment scenarios. As wired backhaul solutions may not be always practical or feasible, in this paper we consider wireless in-band backhaul for a network with macro cells and small cells. To improve the overall user experience in the network, efficient resource allocation and transmission schemes taking into account of both backhaul links and access links are proposed and associated optimization problems are formulated. Numerical results for the proposed schemes demonstrate significant improvements over several other schemes.