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Interference mitigation in intentional jammers aided non-uniform heterogeneous cellular networks
Saleh Mohammed Ghonaim1, Samar Khan2, Faisal Althobiani3
1Nautical Science Department, Faculty of Maritime, King Abdulaziz University, Jeddah, Saudi Arabia.
Plos One
|June 28, 2023
Summary
This study optimizes fifth-generation (5G) networks by using small base station (SBS) muting and reverse frequency allocation (RFA) to reduce interference. These methods improve uplink coverage and signal-to-interference ratio (SIR) in macro base station (MBS) networks.
Area of Science:
- Telecommunications Engineering
- Wireless Communication Systems
Background:
- Fifth-generation (5G) networks employ small base stations (SBSs) alongside macro base stations (MBSs) for enhanced coverage and capacity.
- Orthogonal frequency division multiple access (OFDMA) in 5G networks can lead to significant inter-cell interference (ICI).
- The presence of intentional jammers further degrades uplink (UL) signal-to-interference ratio (SIR) through intentional jammers' interference (IJI).
Purpose of the Study:
- To propose and evaluate novel interference mitigation techniques for 5G networks.
- To address the combined challenges of inter-cell interference (ICI) and intentional jammers' interference (IJI).
- To enhance the uplink (UL) coverage performance in 5G networks under interference conditions.
Main Methods:
- Implementation of small base station (SBS) muting, specifically switching off SBSs near macro base stations (MBSs).
- Application of reverse frequency allocation (RFA) as an interference management scheme.
- Analysis of the proposed network model's performance under simulated interference scenarios.
Main Results:
- SBS muting effectively reduces both inter-cell interference (ICI) and intentional jammers' interference (IJI).
- Reverse frequency allocation (RFA) further mitigates residual ICI and IJI.
- The combined techniques show potential for significant improvement in uplink (UL) signal-to-interference ratio (SIR).
Conclusions:
- The proposed approach of SBS muting combined with RFA is effective in managing interference in 5G networks.
- These interference mitigation strategies are crucial for improving uplink (UL) coverage and overall system performance.
- The study provides a viable solution for enhancing 5G network resilience against both internal and external interference sources.
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