Embodiments of the present invention provide a channel boundary locating method, a base station, and a user equipment. The method includes: receiving, by a base station of non-time reference cell, cell timing information delivered by a network, where the cell timing information includes a non-time reference parameter, and the non-time reference parameter corresponds to a smallest timing difference between a downlink F-DPCH frame of time reference cell and an HS-PDSCH subframe of time reference cell; calculating, by the base station of non-time reference cell, boundary information of a high speed shared control channel (HS-SCCH) according to the non-time reference parameter; and acquiring boundary information of a high speed dedicated physical control channel (HS-DPCCH) of non-time reference cell according to the boundary information of the HS-SCCH. In the embodiments of the present invention, reliability of downlink data transmission is improved.