Since the release of the first version of the 5th generation(5G) mobile networks standard: Release-15(Rel-15), the 3rd Generation Partnership Project(3GPP) made significant efforts in the field of indoor and outdoor w...Since the release of the first version of the 5th generation(5G) mobile networks standard: Release-15(Rel-15), the 3rd Generation Partnership Project(3GPP) made significant efforts in the field of indoor and outdoor wireless positioning. Notably, Release-16(Rel-16) augmented support for enhanced mobile broadband(eMBB) and ultra-reliable low-latency communication(uRLLC), particularly within complex indoor settings. To further meet the diverse application needs of positioning scenarios, the 3GPP standards for Release-17(Rel-17) and Release-18(Rel-18) propose new enhancement measures to continuously provide more accurate positioning services. In this paper, the scholarly discourse on 5G positioning was critically examined, providing a systematic review of the 5G positioning standards as delineated in 3GPP's Rel-16 and Rel-17, and extended the discussion to the anticipated enhancements in 5G Rel-18, along with their underlying motivations. Through these discussions, not only a comprehensive perspective on the current development of 5G positioning technology was provided but also forward-looking analysis and predictions for the evolution of positioning technology in the upcoming 3GPP Release-19(Rel-19) was offered. Additionally, it serves as a reference for researchers interested in understanding the development of positioning within the standard framework in the field of 5G indoor positioning, which holds significant meaning for promoting research and application of 5G positioning technology.展开更多
文摘第三代合作伙伴计划(3rd Generation Partnership Project,3GPP)非地面网络(non-terrestrial network,NTN)通过对5G新空口(new radio,NR)协议进行增强设计以适应卫星通信场景,可深度融合地面网络与非地面网络优势,并具备持续演进能力,是实现天地互联的关键技术方向。为应对星地传输功率与频谱资源的限制以及对广覆盖与高容量的双重需求,Rel-19 NR NTN工作组针对下行覆盖增强与上行容量/吞吐量增强两大子议题开展了标准化研究。基于此,首先概述了NTN传输的技术挑战,继而系统分析了上述议题的技术方案及标准化进展,最后展望了Rel-20 NR NTN潜在的传输增强技术演进方向。
基金supported by the National Natural Science Foundation of China (62372049)。
文摘Since the release of the first version of the 5th generation(5G) mobile networks standard: Release-15(Rel-15), the 3rd Generation Partnership Project(3GPP) made significant efforts in the field of indoor and outdoor wireless positioning. Notably, Release-16(Rel-16) augmented support for enhanced mobile broadband(eMBB) and ultra-reliable low-latency communication(uRLLC), particularly within complex indoor settings. To further meet the diverse application needs of positioning scenarios, the 3GPP standards for Release-17(Rel-17) and Release-18(Rel-18) propose new enhancement measures to continuously provide more accurate positioning services. In this paper, the scholarly discourse on 5G positioning was critically examined, providing a systematic review of the 5G positioning standards as delineated in 3GPP's Rel-16 and Rel-17, and extended the discussion to the anticipated enhancements in 5G Rel-18, along with their underlying motivations. Through these discussions, not only a comprehensive perspective on the current development of 5G positioning technology was provided but also forward-looking analysis and predictions for the evolution of positioning technology in the upcoming 3GPP Release-19(Rel-19) was offered. Additionally, it serves as a reference for researchers interested in understanding the development of positioning within the standard framework in the field of 5G indoor positioning, which holds significant meaning for promoting research and application of 5G positioning technology.
