US 9,813,934 B2
Wireless device for supporting cellular communications and D2D communications
Suhwan Lim, Seoul (KR); Sangwook Lee, Seoul (KR); Jongkil Shin, Seoul (KR); and Dongik Lee, Seoul (KR)
Assigned to LG ELECTRONICS INC., Seoul (KR)
Filed by LG ELECTRONICS INC., Seoul (KR)
Filed on May 13, 2016, as Appl. No. 15/154,889.
Claims priority of provisional application 62/162,585, filed on May 15, 2015.
Claims priority of application No. 10-2016-0058533 (KR), filed on May 13, 2016.
Prior Publication US 2016/0337894 A1, Nov. 17, 2016
Int. Cl. H04W 4/00 (2009.01); H04W 28/02 (2009.01); H04L 5/14 (2006.01); H04B 7/26 (2006.01); H04W 48/08 (2009.01); H04L 5/00 (2006.01); H04W 88/06 (2009.01)
CPC H04W 28/0215 (2013.01) [H04B 7/265 (2013.01); H04L 5/0062 (2013.01); H04L 5/0073 (2013.01); H04L 5/1461 (2013.01); H04W 48/08 (2013.01); H04W 88/06 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A wireless device for supporting a first band for LTE (Long Term Evolution)/LTE-A (LTE-Advanced) based cellular communications and a second band for D2D (Device to Device) communications, the device comprising:
a main antenna;
a first RF (Radio Frequency) chain configured to process a first transmission signal and a second transmission signal wherein the first and second transmission signals are to be transmitted via the main antenna using uplink bands of the first and second bands respectively;
a second RF chain configured to process a first reception signal, wherein the first reception signal is received via the main antenna using an uplink band of the second band;
a third RF chain configured to process a second reception signal, wherein the second reception signal is received via the main antenna using a downlink band of the first band;
a switch disposed between the first RF chain and the second RF chain for selecting one between the transmission signal associated with the first RF chain and the reception signal associated with the second RF chain; and
a first duplexer coupled to the switch, the third RF chain and the main antenna for enabling separation between the signal using the first band and the signal using the second band.