The rapid proliferation of fifth-generation (5G) wireless networks and the conceptualization of sixth-generation (6G) networks have revolutionized global connectivity, enabling ultra-high-speed data transmission, ultra-low latency, and massive device connectivity for applications such as the Internet of Things (IoT), autonomous vehicles, smart cities, and immersive augmented reality. However, these advancements come at a significant environmental cost, with the information and increased power consumption and carbon emissions. Green communication, which focuses on energy-efficient, sustainable network design, has emerged as a critical research area to address these challenges. This research paper provides an exhaustive analysis of green communication strategies in 5G and next-generation networks, covering energy-efficient technologies, resource management, renewable energy integration, security challenges, and experimental results. Through extensive simulations and real-world experiments, we evaluate key techniques such as small cell sleep modes, massive MIMO optimization, device-to-device (D2D) communication, and AI-driven resource allocation. The results demonstrate substantial energy savings while maintaining quality of service (QoS). The paper also explores standardization efforts, future trends, and open research issues, offering a roadmap for sustainable wireless communication systems. With over 7,000 words, detailed tables, graphs, and interpretations, this study aims to guide researchers, policymakers, and industry professionals toward achieving carbon-neutral networks by 2030.
Nidhi et al. (Wed,) studied this question.
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