1. A method for transmitting and receiving, by a terminal, synchronization signals in a wireless communication system, the method comprising:receiving, from a base station, the synchronization signals and an extended synchronization signal which are repeatedly transmitted a predetermined number of times for each beam,
wherein the synchronization signals include a primary synchronization signal (PSS) and a secondary synchronization signal, and
wherein the extended synchronization signal includes positional information of a symbol in a subframe;
acquiring time and frequency synchronization with the base station based on the synchronization signals and the extended synchronization signal; and
receiving, from the base station, a beam reference signal (BRS) related to beam selection.