State-of-the-Art Overview of 3GPP Ambient IoT Radio Access Aspects. - Xiaodong Shen; Jingwen Zhang; Ningyu Chen; Lijie Hu; Xiaoran Zhang; Miaoqi Zhang; Jianyang Ren; Kangyi Liu; Nan Hu; Xiaodong Xu; Haiyu Ding (IEEE Commun. Stand. Mag., 2025)