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An Active Power Control Technique for Downlink Interference Management in a Two-Tier Macro⁻Femto Network
1School of Information and Electronics, Beijing Institute of Technology, Beijing 100081, China. tehseen@bit.edu.cn.
Active Power Control (APC) reduces interference between femtocells and macrocells, improving indoor mobile user data rates. This green femtocell technique also cuts power consumption while maintaining quality of service.
Area of Science:
- Wireless Communication Networks
- Telecommunications Engineering
Background:
- Femtocells enhance indoor LTE coverage and offload traffic but cause interference with macrocells due to shared spectrum.
- Interference mitigation is crucial for the efficient operation of coexisting femtocell and macrocell networks.
Purpose of the Study:
- To propose an Active Power Control (APC) technique for reducing Inter-Cell Interference (ICI) from femtocells to macrocells.
- To optimize power consumption for a green femtocell network while ensuring Quality of Service (QoS) for femtocell users.
Main Methods:
- Development and simulation of the Active Power Control (APC) technique.
- Evaluation of APC's effectiveness in reducing ICI and optimizing throughput for Macro User Equipment (MUE).
Main Results:
- The proposed APC technique significantly reduces ICI experienced by MUEs.
- APC optimizes throughput performance for MUEs.
- APC achieves a balanced trade-off between Femto User Equipment (FUE) QoS and ICI reduction for nearby MUEs.
Conclusions:
- APC is an effective method for mitigating femtocell-induced ICI in LTE networks.
- The technique contributes to greener femtocell deployments by reducing power consumption.
- APC offers a practical solution for managing coexisting femtocell and macrocell interference while preserving user experience.
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