—One of the most important 5G features is their
support for heterogeneous networks (HetNets). Complementing
the classic macrocell base stations (MBS), femtocell base stations
(FBS) are beneficial in terms of extensive coverage, including
indoor, and enhancement of capacity. Unfortunately, FBSs performance in 5G HetNets is affected by complex cross-tier and
co-tier interferences, causing reduced quality of service (QoS) and
unfairness among users. This paper proposes an innovative resource allocation (RA) algorithm for interference mitigation (IM)
based on graph coloring techniques to improve QoS and interuser fairness. The proposed algorithm, named Weighted EdgeWeighted Vertex Interference Mitigation (WEWVIM), employs
a weight to the directed edge corresponding to the interference
strength from nearby base stations (BSs) and a weight to every
vertex, indicating the color with the smallest interference or
higher transmission rate. A region of interest (ROI) is formed to
find the interfering BSs. Simulation results show that WEWVIM
outperforms existing schemes in terms of fairness and QoS,
including throughput, packet loss ratio (PLR), delay, and jitter.
Index Terms—HetNets, Graph Coloring, Interference Mitigation, 5G, QoS, Resource Allocation
Science Foundation Ireland (SFI) via grants 18/CRT/6224 (SFI Centre for Research Training in Digitally-Enhanced Reality D-REAL), 16/SP/3804 (Enable) and 12/RC/2289_P2 (Insight)
ID Code:
28024
Deposited On:
20 Jan 2023 14:44 by
Bharat Agarwal
. Last Modified 20 Jan 2023 14:44