Patent ID: 9699749
Date: 2017-07-04
CPC Classifications: H04L,H04W

Claim:
1. A method for performing device-to-device (D2D) communication with a second user equipment (UE) by a first UE in a wireless communication system, the method comprising: receiving a first signal from the second UE; and delivering a second signal based on the received first signal to a third UE, wherein the first and second signals are used for synchronization acquisition related to D2D communication in each of the first UE and the third UE, wherein the first signal comprises a primary synchronization signal (PSS) and a secondary synchronization signal (SSS) received from a serving cell of the second UE, wherein a sequence for the PSS is mapped to 62/x subcarriers excluding a direct current (DC) subcarrier, wherein a sequence for the SSS is mapped to 62/y subcarriers excluding the DC subcarrier, wherein x and y are values selected from divisors of 62.