US 10,368,352 B2
Data transmission method and apparatus by device to device terminal in wireless communication system
Hyukjin Chae, Seoul (KR); Hanbyul Seo, Seoul (KR); Byounghoon Kim, Seoul (KR); and Myoungseob Kim, Seoul (KR)
Assigned to LG ELECTRONICS INC., Seoul (KR)
Filed by LG ELECTRONICS INC., Seoul (KR)
Filed on Jan. 15, 2019, as Appl. No. 16/248,588.
Application 16/248,588 is a continuation of application No. 15/313,950, granted, now 10,212,703, previously published as PCT/KR2015/005294, filed on May 27, 2015.
Claims priority of provisional application 62/074,629, filed on Nov. 3, 2014.
Claims priority of provisional application 62/055,644, filed on Sep. 25, 2014.
Claims priority of provisional application 62/043,419, filed on Aug. 29, 2014.
Claims priority of provisional application 62/040,428, filed on Aug. 22, 2014.
Claims priority of provisional application 62/035,421, filed on Aug. 9, 2014.
Claims priority of provisional application 62/034,760, filed on Aug. 7, 2014.
Claims priority of provisional application 62/004,878, filed on May 29, 2014.
Claims priority of provisional application 62/003,518, filed on May 27, 2014.
Prior Publication US 2019/0150146 A1, May 16, 2019
Int. Cl. H04L 29/08 (2006.01); H04W 84/18 (2009.01); H04W 72/04 (2009.01); H04W 84/12 (2009.01); H04W 72/02 (2009.01); H04W 48/16 (2009.01); H04L 5/00 (2006.01); H04W 4/70 (2018.01); H04W 76/14 (2018.01); H04W 92/18 (2009.01); H04W 8/00 (2009.01); H04B 1/7136 (2011.01); H04L 1/18 (2006.01); H04L 1/00 (2006.01); H04W 88/02 (2009.01); H04W 84/04 (2009.01)
CPC H04W 72/0446 (2013.01) [H04B 1/7136 (2013.01); H04L 1/1887 (2013.01); H04L 5/0012 (2013.01); H04L 5/0094 (2013.01); H04L 29/08477 (2013.01); H04W 4/70 (2018.02); H04W 8/005 (2013.01); H04W 48/16 (2013.01); H04W 72/02 (2013.01); H04W 72/04 (2013.01); H04W 76/14 (2018.02); H04W 84/12 (2013.01); H04W 84/18 (2013.01); H04W 92/18 (2013.01); H04L 2001/0097 (2013.01); H04W 84/042 (2013.01); H04W 88/02 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A method of transmitting a discovery signal by a Device-to-Device (D2D) User Equipment (UE) in a wireless communication system, the method comprising:
determining a subframe pool in a discovery period; and
transmitting the discovery signal in a subframe included in the subframe pool,
wherein a frequency resource index on which the discovery signal is transmitted on the discovery period is determined by using:
(f_shift+floor((nf+Nf*nt)/Nt))mod Nf
wherein a time resource index on which the discovery signal is transmitted on the discovery period is determined by using:
(t_shift+nf+Nf*nt)mod Nt
where Nf is determined based on a number of discovery resources per subframe, Nt is determined based on a 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 on a previous discovery period, and nt is a time resource index on which the discovery signal is transmitted on the previous discovery period,
wherein f_shift and t_shift are determined from values indicated by a higher-layer parameter, and
wherein f_shift varies based on the discovery period and not based on a cell ID.