QoS-aware Small-Cell-Overlaid Heterogeneous Sensor Network Deployment for eHealth

eHealth has brought hope to the healthcare system development, releasing the immense pressure, imposed by population proliferation and ageing problems. Densification of networks, especially using small cells (SCs), enables connecting a huge amount of sensors in the heterogeneous sensor networks (HetSNets) deployment, for eHealth applications; however, dense small cell allocation (D-SCA) poses new challenges, due to its very complicated optimization, which usually results into integer programming problem. In this paper, we introduce a generic SC-overlaid hierarchical HetSNet infrastructure for eHealth, based on which we propose an integer-programming D-SCA scheme. The proposed scheme is tested multiple network configurations, with different scales, while supporting high data-rates and energy efficiency demands of eHealth applications in HetSNet.