Modeling of a Software-Defined Reflective Intelligent Surface Network Using Queueing Theory Syed Rakib Hasan, Masanori Hamamura, Saifur Rahman Sabuj IEEE Access, 2026 To enhance redundancy and ensure continuous connectivity in conventional communication systems, a method utilizing an on-demand forwarding signal transmitter enabled by a reflective intelligent surface (RIS) serves as a flexible and adaptive solution, particularly for outdoor communications. However, managing and regulating these RISs in dynamic environments present significant challenges, particularly in large-scale network systems. Software-defined networking presents a compelling method for managing networks in contrast to traditional networking, delivering automated, centralized, and intelligent control. In this paper, we introduce a software-defined RIS network architecture that aims to address the expected demands of future wireless communication, focusing on high network availability, the improved convergence of connectivity, and improved performance. The results of this study indicate that the achievable data rate is increased by approximately 35%, energy efficiency is improved by about 15%, packet processing time is nearly 2.32% shorter, server utilization is improved by approximately 48%, pathloss is minimized by roughly 64%, spectral efficiency is improved by nearly 84.2%, service rate is improved by approximately 38.7%, and packet arrival rate is exacerbated by approximately 3.3%.
VANET based Vehicular System for Real-time Accident Prevention and Traffic Management in Dhaka-Chattagram Highway Mohammad Sayem, Md. Nahidul Alam, Md. Zahid Hasan Buiyan, Syed Rakib Hasan 2025 7th International Conference on Electrical Information and Communication Technology Eict 2025, 2025 Vehicular Ad hoc Networks (VANETs) employ wireless local area network technology to enable communications between vehicle-to-vehicle (V2V) and vehicle-to-infrastructure (V2I). The unique features of VANET including various data collection, analysis, traffic information, and collision avoidance warnings to vehicles, make it an essential part of a smart city for safe traffic management. In this paper, we propose a VANET-based vehicular system for the Paduar Bazar Bishwa Road junction on the Cumilla section of the Dhaka-Chattogram N1 highway. The system is also integrated with the backscatter communication (BackCom) system. It enhances energy efficiency and supports communication in any challenging environment. One of the significant contributions of this paper is the development of a safety system that enables real-time hazard detection, automatic collision avoidance, and emergency response through V2V and Vehicle-to-Roadside Unit (V2RSU) communications, supported by field data and simulation software such as SUMO and NS3. Our findings clearly illustrate how the proposed system can predict traffic disruptions, improve road safety, and reduce accident severity. The results also show its performance in realworld scenarios; hence, it represents a significant step toward reducing accidents on high-risk highways.
A Comprehensive Survey on Emerging AI Technologies for 6G Communications: Research Direction, Trends, Challenges, and Opportunities Barsha Rani Das, Syed Rakib Hasan, Saifur Rahman Sabuj, Md Akbar Hossain, Sayan Kumar Ray International Journal of Intelligent Networks, 2025 Technology is now embedded in every aspect of human existence. The demand for technological advancement is increasing day by day for seamless connections. Integrating Artificial Intelligence (AI) into technology will make the future world beyond one's imagination. The field of wireless communication is rapidly changing, and the existing wireless networks need to be improved with the growing data rate. Fifth-generation (5G) networks are now implemented throughout the world, and they meet the criteria of modern technology with higher data rates, improved quality of service, lower latency, and so forth. However, with the changing data rates after ten years, it will become impossible to meet the demand. It is expected that the upcoming sixth-generation (6G) network with the integration of AI will be the successor of 5G, and it will resolve the main issues of 5G, like higher data rates, ultra-low latency, efficiency, and so on. AI in 6G will provide a more secure, reliable communication system than its predecessor generation. This paper presents the use of AI in 6G communication networks, technologies, techniques, trends, and future research directions. It also describes in-depth knowledge of the AI-integrated 6G communication system model. Furthermore, this paper encompasses applications of AI in several technologies, challenges, and significant developments.
Design and Analysis of a Cross Split Ring Frequency Sensitive Surface Based EM Shield in Wireless Communication Syed Rakib Hasan, Md. Saiam, Nafiz Arman, Saifur Rahman Sabuj 2024 International Conference on Advances in Computing Communication Electrical and Smart Systems Innovation for Sustainability Icaccess 2024, 2024 Due to the growing operational frequency of wireless devices and systems, electromagnetic (EM) interference has escalated into a severe problem. As a result, EM shielding became crucial for safeguarding extremely sensitive radio frequency (RF) electronics. For mobile communication, a frequency selective surface (FSS) based $EM$ shield is presented in this study due to its benefits, including its compact size, frequency selectivity, and high stability. Two exterior square loops and a cross split ring loop make up the FSS unit cell, which was created using geometry. The suggested structure has an overall dimension of (50x50x2) mm and was created using COMSOL software RF module. The findings indicate that the FSS shield resonates with a center frequency of 5 GHz, respectively, spanning the 5G frequency ranges. At this band frequency, the suggested design offers shielding efficacy of roughly -30 dB, which is better than cross design. Moreover, this study shows better electric field norm and contour.
Reconfigurable intelligent surface assisted BackCom: An overview, analysis, and future research directions Md. Saiam, Mostafa Zaman Chowdhury, Syed Rakib Hasan, Yeong Min Jang ICT Express, 2023 For efficient, controllable, and secure communication, different technologies are integrated with sixth-generation (6G) networks. Backscatter communication (BackCom) is an energy harvesting communication technology which is very efficient for 6G networks and Internet of Things (IoT) applications. For seamless and controllable signal propagation, reconfigurable intelligent surface (RIS) is particularly effective which provides better signal quality through its electronically controlled smart beamforming techniques. This article provides an overview and research directions regarding promising RIS-assisted BackCom. A secured RIS-assisted BackCom for seamless, reliable, and efficient communication is also presented in this study. The research findings reveal that when we deploy RIS-assisted BackCom, the channel gain, data transmission rate, and energy efficiency of the signal reflecting surfaces are all substantially enhanced.
Integration of Reconfigurable Intelligent Surface and Visible Light Communication Systems for 5G and beyond Communications Syed Rakib Hasan, Mostafa Zaman Chowdhury, Md. Saiam, Yeong Min Jang 5th International Conference on Artificial Intelligence in Information and Communication Icaiic 2023, 2023 The upcoming fifth generation (5G) and beyond communications introduce numerous immerging technological systems. With the rising number of users, meeting the data rate demand utilizing radio frequency (RF) spectrum is becoming extremely difficult, even for 5G communications. For this reason, researchers have shifted to visible spectrum as an alternative to the RF spectrum. Visible spectrum can provide huge channel capacity as a result the network traffic jam can be solved for future communication networks. Visible light communication (VLC) system is done by this visible spectrum. VLC is mainly an indoor communication system. VLC has a high channel capacity over RF communication. The major concern of this VLC system is when the users are far from light source or remote areas, the signal strength becomes poor and data rate received by users is comparatively low. Reconfigurable intelligent surface (RIS) is a brand new technology for 5G and beyond communications. It allows to maintain high signal strength, better network security, and helps to provide seamless connectivity with high data rate. RIS creates a great impact on VLC system. RIS uses its intelligent beamforming to allow it to get better signal strength and seamless connection to users in remote areas or far from the source. This article combines the RIS technology with VLC and performance analysis between RIS-assisted VLC over traditional VLC. Research finding clearly shows that the overall performance of RIS-assisted VLC is much higher than the current VLC system.
SDN-based Signal Performance Optimization in Campus Area Network Md. Abu Baker Siddiki Abir, Shahrukh Hossain Rian, Syed Rakib Hasan, Nafiz Arman 2023 International Conference on Information and Communication Technology for Sustainable Development Icict4sd 2023 Proceedings, 2023 Numerous ground breaking technical solutions are introduced in the approaching sixth generation communications. Even with fifth generation communications, it is become challenging to employ and optimize the limited radio frequency (RF) spectrum to fulfill the demand for data rates due to the growing user base. As a result, for next generation communication systems it, it become very mandatory to utilized properly this limited RF spectrum to fulfill the data rate demand and meet these challenges. As the only current and proven infrastructure, campus area networks (CANs) have emerged as a potential option for mobile and stationary users. Optical fiber, IEEE standards 802.11 and 802.3ab is used for CAN communications. It is very simple and practical to implementation of signal transmitter for positioning indoor or outdoor environment. In this paper, software-defined networking is used for introduce an approach in CAN to optimize the signal path loss and its receiver signal strength.
