公开(公告)号：US20220150698A1

公开(公告)日：2022-05-12

申请号：US17438803

申请日：2020-03-11

Applicant: ABB Power Grids Switzerland AG

Inventor： Zhibo PANG ,  Michele LUVISOTTO ,  Fei PAN ,  Ming XIAO ,  Roger JANSSON

IPC: H04W12/065 ,  H04W12/03 ,  H04W12/122 ,  H04L5/00 ,  H04B7/06

Abstract: Communication method (100) using OFDM (Orthogonal Frequency Division Multiplexing) comprising transmitting and receiving packets between a first node and at least one second node, where each packet comprises a preamble and payload data. The method is performed by the first node and comprises: receiving (114) packets from the at least one second node, and authenticating (112) the at least one second node based on physical layer characteristics, i.e. on CSI (Channel State Information). Especially, the authenticating (112) is based on a plurality of preambles, which) are extracted from a group of consecutively received packets.