An Enhanced Active Power Control Technique for Interference Mitigation in 5G Uplink Macro-Femto Cellular Network

Abstract

Macro-femto heterogeneous network (HetNet) comes with tremendous inter and intra cell interference problem. This paper considered fifth generation (5G) non-stand-alone (NSA) architecture. We proposed an enhanced active power control technique (EAPC) to mitigate interference in uplink macro-femto HetNet. The MATLAB simulation result obtained in terms of average power consumption of macrocell user equipment (MUE) and femtocell user equipment (HUE) using EAPC technique stood at 6.7 dBm and 7.5 dBm respectively, as against that of active power control (APC), fixed power control (FPC) and power control 1 (PC1); which stood at 10.9 dBm, 23.0 dBm, 14.8 dBm for MUE and 11.1 dBm, 23.0 dBm, 14.8 dBm for HUE respectively. It indicates that HUE and MUE using EAPC technique had low average power consumption when benchmark. 5G NSA macrocell base station (en-gNB), 60% cumulative distributive function (CDF) of throughput based on EAPC, APC, PC1 and FPC techniques had 36.2 Mbps, 15.0 Mbps, 24.0 Mbps and 12.5 Mbps throughput respectively. And that of femtocell base station (Hen-gNB) according to EAPC, APC, PC1 and FPC was 25.0 Mbps, 23.0 Mbps, 10.0 Mbps and 18.6 Mbps throughout respectively. This implies that EAPC has better Hen-gNB and en gNB throughput when benchmark with other related techniques. Hence, the proposed EAPC technique improves 5G network performance in terms of better throughput and conserving limited user equipment (UE) energy.