mso-ansi-language:EN-US">5G New Radio (NR) is anticipated to revolutionize communication infrastructure significantly, it is designed to provide robust and reliable network services tailored to a wide range of operational demands. A crucial aspect of this advancement is the development of direct Device-to-Device (D2D) communication, termed Sidelink(SL) in the 5G-NR standards by 3GPP.
mso-ansi-language:EN-US">5G-NR Sidelink communication is essential due to its direct and efficient nature, significantly enhancing support for complex services such as autonomous driving systems and Internet-of-Things(IoT)
color:#002060;mso-ansi-language:EN-US">. It facilitates real-time, reliable information exchange among distributed intelligent devices in an ad-hoc manner, propelling network development into its next phase and offering streamlined and responsive connectivity. Despite these potentials, research into dependable Ultra-Reliable and Low-Latency Communication(URLLC) services over Sidelink, especially for delay-sensitive and high-reliability applications, remains scarce.
mso-ansi-language:EN-US">This thesis addresses the significant gap in direct D2D communication by reconfiguring the 5G-NR Sidelink, particularly for Vehicle-to-Everything (V2X) communications. We initially alter standard parameter settings to accommodate diverse operational demands within V2X communications. Through adjustments to key parameters—numerology, Modulation and Coding Scheme (MCS), and MAC layer scheduling—our configuration meets stringent URLLC requirements, demonstrating the potential in a V2X Sidelink communication at the 5.9 GHz band.
mso-ansi-language:EN-US">Despite this newly designed system supporting URLLC services in the V2X domain, standards and industrial requirements dictate that numerous services continue to operate over standard parameter settings, with additional services potentially necessitating different types of settings. To accommodate these multiple services within the limited resources available at the V2X 5.9 GHz band, we propose a novel architecture based on network slicing. This architecture is designed to support multiple services simultaneously, employing a variety of dynamic parameter settings directly over the Sidelink PC5 link.
mso-ansi-language:EN-US">By segmenting network resources into protected slices, each tailored to specific service needs, our system maintains service integrity and prevents interference. The Proximity Services (ProSe) standard plays a pivotal role in this configuration, enabling systematic group management for different service scenarios. This approach facilitates the management of both standard and altered parameter settings across different service slices, promoting flexibility and efficiency.
mso-ansi-language:EN-US">Furthermore, we apply these concepts to real-world applications such as vehicular platooning to assess the tangible benefits of URLLC services. Simulation results indicate significant improvements in mobility metrics such as stability and response times when a URLLC service slice is allocated to platoon vehicles.
mso-ansi-language:EN-US">This study not only proposes a novel architecture for Sidelink-based network slicing but also advances our understanding of integrating URLLC services into direct 5G-NR Sidelink communication. It lays the groundwork for future research aimed at optimizing and practically implementing advanced network slicing and URLLC strategies in diverse communication environments.
