Multiple-Association Supporting HTC/MTC in Limited-Backhaul Capacity Ultra-Dense Networks

Coexistence of Human-Type Communications (HTCs) and Machine-Type (MTCs) is inevitable. Ultra-Dense Networks (UDNs) will be efficacious in supporting both types communications. In a UDN, massive number low-power low-cost Small Cells (SCs) are deployed with density higher than that the HTC users. such scenario, backhaul capacities constitute an intrinsic bottleneck for system. Hence, we propose multiple association scheme where each user associates to activates SCs overcome capacity constraints mainly encountered downlink. addition, having more active cells allows MTC devices supported by network. Using tools from stochastic geometry, formulate novel mathematical framework investigating performance downlink uplink as well MTC. Stretched Exponential Path Loss (SEPL) model considered practically reflect UDN environment. Extensive simulations were conducted verify accuracy analysis under different system parameters. Results show existence optimum which may connect constraints. Besides, proposed multiple-association improves terms ASE devices.