公开(公告)号：US20170222842A1

公开(公告)日：2017-08-03

申请号：US15490653

申请日：2017-04-18

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xiaoshu SI ,  Tao OUYANG ,  Fan WANG ,  Xingli XU

IPC: H04L25/08 ,  H04L25/02 ,  H04L29/06

CPC classification number: H04L25/085 ,  H04L25/022 ,  H04L27/2607 ,  H04L27/2613 ,  H04L27/2657 ,  H04L27/2675 ,  H04L45/24 ,  H04L69/22

Abstract: The present invention provides a preamble sequence sending and receiving method and apparatus, and a system. The preamble sequence sending method includes: generating, by a transmit end, a frequency offset estimation sequence, where the frequency offset estimation sequence includes N subsequences each with a length of M, N is a positive integer greater than or equal to 2, and M is a positive integer; generating, by the transmit end, a prefix and a suffix based on the frequency offset estimation sequence; adding, by the transmit end, the prefix and the suffix before and after the frequency offset estimation sequence respectively to form a preamble sequence, where the prefix and the suffix are used for canceling multipath interference; and adding, by the transmit end, the preamble sequence to a data packet and sending the data packet to a receive end.