User Association, Power Control and Channel Access Schemes for Two-Tier Macro-Femto Networks: CDF of SINR Analysis. Issue 1 (2nd January 2022)

• Record Type: Journal Article
• Authors: Ghosh, Joydev; Gupta, Akhil; Haci, Hüseyin; Jakó, Zoltán
• Is Part Of: IETE technical review. Volume 39:Issue 1(2022)
• Page Start: 219
• Page End: 230
• Publication Date: 2022-01-02
• Subjects: Channel allocation -- Femtocell -- Macrocell -- OFDMA -- Power consumption; Telecommunication -- Periodicals; Electronics -- Periodicals; Electronics; Telecommunication; Periodicals; 621.38
• DOI: 10.1080/02564602.2020.1833766
• Languages: English
• ISSNs: 0256-4602

Abstract

Abstract : In the rapid development of wireless communications, femtocells provide tremendous improvement in coverage and quality of service for users. Macro-femto based networks are envisioned to be the de-facto solution for providing ultra-high speed communications in next-generation mobile wireless networks. This paper studies two-tier macro-femto networks and proposes a collection of novel technologies to address the interference problems. First, a novel user association scheme is proposed that aims to optimize the load among femto base stations (FBSs). Second, a near-optimal ergodic search algorithm is proposed to regulate the power consumption at macro base stations (MBSs) and improve energy efficiency. Third, a channel access mechanism is proposed for FBSs that aims to minimize inter-tier interference. For the proposed system, CDF of SINR is derived and used for performance investigation. Simulation results show that the proposed system can significantly outperform a popular, conventional cognitive radio-based system for all the considered simulation scenarios.