The present disclosure provides a signal transmission method, a signal reception method and a UE. The signal transmission method includes transmitting an SSB within a synchronization subframe or slot. The SSB includes a PSS, an SSS and a PBCH. At least one of the following information is configured through at least one of a preconfigured mode, the PBCH, a DMRS corresponding to the PBCH and the SSS: information about the quantity of SSBs actually transmitted by the UE within a synchronization period, information about a time-domain position of the SSB, and information about an index number of a currently-transmitted SSB.