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公开(公告)号:US10742469B2
公开(公告)日:2020-08-11
申请号:US16038163
申请日:2018-07-17
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor: Tao Ouyang , Syed Habib Rahman , Xiaoshu Si , Fan Wang , Hao Lei
Abstract: A method and an apparatus for determining a time offset are disclosed. The method includes: obtaining, by a device at a head end, a time-domain signal based on a received signal; and then determining a time offset based on values of peak-to-average ratios of a preset quantity of symbols starting from a qth symbol in the time-domain signal, where a peak-to-average ratio of the qth symbol is greater than a preset threshold. A new method for determining a time offset is provided, and takes advantages that the time-domain signal obtained by the device at the head end has stronger capabilities of resisting interference such as frequency offset and phase noise. The method for determining a time offset can be applied both to initial ranging and periodic ranging.