Method for transmitting or receiving signal in wireless communication system supporting d2d communication and apparatus for performing same

Abstract

A method for receiving a signal through a physical format adaptable to a wireless communication environment by a device supporting D2D communication according to an embodiment of the present invention comprises the steps of: receiving a synchronization signal from a transmission node on the basis of one of a first physical format and a second physical format; and performing synchronization with the transmission node on the basis of the synchronization signal, wherein when the second physical format is used, M synchronization symbols in addition to N synchronization symbols used in the first physical format are set in the same sub-frame, and a total of (N+M) synchronization symbols included in the same sub-frame may include a first synchronization symbol to which a first Zadoff-Chu sequence generated through first root indexes is mapped, and a second synchronization symbol to which a second Zadoff-Chu sequence generated through second root indexes is mapped.

What is claimed is: 
     
         1 . A method of communicating by a first user equipment (UE) in a wireless communication system supporting device to device (D2D) communication, the method comprising:
 identifying a reference signal (RS) resource pattern among a plurality of RS resource patterns;   informing the identified RS resource pattern to a second UE; and   performing the D2D communication with the second UE using the identified resource pattern in a resource pool,   wherein the RS resource pattern is defined based on a number of RS symbols or a position of RS symbols in a time interval.   
     
     
         2 . The method of  claim 1 , wherein the method further comprising:
 receiving configuration information from a base station through a higher layer signal, wherein the configuration information is related with the resource pool for the D2D communication.   
     
     
         3 . The method of  claim 1 , wherein the RS resource pattern is identified based on at least one of a mobility of the first UE, a carrier frequency or a service type. 
     
     
         4 . The method of  claim 1 , wherein the number of RS symbols is identified based on a frequency offset corresponding to a mobility of the first UE. 
     
     
         5 . A first user equipment (UE) supporting device to device (D2D) communication, the first UE comprising:
 a memory; and   a processor;   wherein the processor configured to:
 identify a reference signal (RS) resource pattern among a plurality of RS resource patterns; 
 inform the identified RS resource pattern to a second UE; and 
 perform the D2D communication with the second UE using the identified resource pattern in a resource pool, 
   wherein the RS resource pattern is defined based on a number of RS symbols or a position of RS symbols in a time interval.   
     
     
         6 . The first UE of  claim 5 , wherein the processor further configured to:
 receive configuration information from a base station through a higher layer signal, wherein the configuration information is related with the resource pool for the D2D communication.   
     
     
         7 . The first UE of  claim 5 , wherein the resource pattern is identified based on at least one of a mobility of the first UE, a carrier frequency or a service type. 
     
     
         8 . The first UE of  claim 5 , wherein the number of RS symbols is identified based on a frequency offset corresponding to a mobility of the first UE.