Invention Application
- Patent Title: DATA TRANSMISSION METHOD AND APPARATUS BY DEVICE TO DEVICE TERMINAL IN WIRELESS COMMUNICATION SYSTEM
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Application No.: US16248588Application Date: 2019-01-15
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Publication No.: US20190150146A1Publication Date: 2019-05-16
- Inventor: Hyukjin CHAE , Hanbyul SEO , Byounghoon KIM , Myoungseob KIM
- Applicant: LG ELECTRONICS INC.
- Applicant Address: KR Seoul
- Assignee: LG ELECTRONICS INC.
- Current Assignee: LG ELECTRONICS INC.
- Current Assignee Address: KR Seoul
- Main IPC: H04W72/04
- IPC: H04W72/04 ; H04L1/18 ; H04W84/12 ; H04W72/02 ; H04W48/16 ; H04L5/00 ; H04W4/70 ; H04W76/14 ; H04W92/18 ; H04W8/00 ; H04W84/18 ; H04B1/7136 ; H04L29/08

Abstract:
According to an embodiment of the present invention, a discovery signal transmission method, by a device to device (D2D) terminal in a wireless communication system, comprises the steps of: determining a subframe pool in a discovery period; and transmitting a discovery signal in a subframe comprised in the subframe pool; wherein a frequency resource index and a time resource index, on which a discovery signal is transmitted in another discovery period which follows the discovery period, are determined by means of next_nf=(f_shift+floor((nf+Nf*nt)/Nt)) mod Nf and next_nt=(t_shift+nf+Nf*nt) mod Nt, respectively, wherein Nf is the number of discovery resources per subframe, Nt is the number of subframes per discovery period, f_shift is a frequency shift, t_shift is a subframe shift, nf is a frequency resource index on which the discovery signal is transmitted, nt is a time resource index on which the discovery signal is transmitted, and the f_shift and the t_shift are determined on the basis of the value that is indicated by means of an upper layer parameter.
Public/Granted literature
- US10368352B2 Data transmission method and apparatus by device to device terminal in wireless communication system Public/Granted day:2019-07-30
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