A new base station control switch for metro cells

Metro cells are an emerging solution to improving hotspots throughput in cellular networks. Unfortunately, they cannot be deployed in a large scale under current cellular networks because of a severe interference problem. We propose a new metro-cell base station control switch (BSCS) which reconfigures topologies and frequency bands adapting to changing traffic demands. The new BSCS connects distributed metro-cell nodes (MCN) and collocated baseband units (BBU), and is able to adaptively switches the connections. As a result, fewer BBUs are required, and frequency utilization is significantly more efficient compared with current networks. Simulations show that our BSCS is able to improve network satisfaction regarding traffic demands by 144.2% and reduce BBU cost by 40% in a metro-cell network covering 0.5 km².