US Patent No. 10,117,200

METHOD AND APPARATUS FOR ACQUIRING SYNCHRONIZATION FOR DEVICE TO DEVICE TERMINAL IN WIRELESS COMMUNICATION SYSTEM


Patent No. 10,117,200
Issue Date October 30, 2018
Title Method And Apparatus For Acquiring Synchronization For Device To Device Terminal In Wireless Communication System
Inventorship Hyukjin Chae, Seoul (KR)
Inkwon Seo, Seoul (KR)
Hanbyul Seo, Seoul (KR)
Jihyun Lee, Seoul (KR)
Assignee LG ELECTRONICS INC., Seoul (KR)

Claim of US Patent No. 10,117,200

1. A method of obtaining synchronization, which is obtained by a D2D (device to device) UE in a wireless communication system, comprising the steps of:measuring at least one of D2D synchronization signal reception power for received D2D synchronization signals;
calculating D2D synchronization signal reception quality using the measured D2D synchronization signal reception power;
selecting a D2D synchronization signal among the received D2D synchronization signals based on the D2D synchronization signal reception quality; and
obtaining a synchronization from the selected D2D synchronization signal,
wherein the D2D synchronization signal reception quality corresponds to a value resulted from dividing the D2D synchronization signal reception power by a difference between total reception power and the D2D synchronization signal reception power, and
wherein the total reception power is related to a symbol period corresponding to a predetermined symbol length based on a timing at which a peak occurs while the D2D synchronization signal and predetermined sequences are correlated with each other.