US 10,512,096 B2
Method for transmitting data in dual connectivity and a device therefor
Seungjune Yi, Seoul (KR); and Sunyoung Lee, Seoul (KR)
Assigned to LG ELECTRONICS INC., Seoul (KR)
Appl. No. 15/740,752
Filed by LG ELECTRONICS INC., Seoul (KR)
PCT Filed Jun. 17, 2016, PCT No. PCT/KR2016/006477
§ 371(c)(1), (2) Date Dec. 28, 2017,
PCT Pub. No. WO2017/003118, PCT Pub. Date Jan. 5, 2017.
Claims priority of provisional application 62/191,532, filed on Jul. 13, 2015.
Claims priority of provisional application 62/187,257, filed on Jul. 1, 2015.
Prior Publication US 2018/0199354 A1, Jul. 12, 2018
Int. Cl. H04W 72/12 (2009.01); H04W 76/10 (2018.01); H04W 28/02 (2009.01); H04L 12/815 (2013.01); H04L 12/819 (2013.01); H04L 5/00 (2006.01); H04W 28/22 (2009.01); H04W 72/14 (2009.01); H04W 88/06 (2009.01)
CPC H04W 72/1215 (2013.01) [H04L 5/001 (2013.01); H04L 5/0035 (2013.01); H04L 5/0044 (2013.01); H04L 5/0053 (2013.01); H04L 47/215 (2013.01); H04L 47/22 (2013.01); H04W 28/02 (2013.01); H04W 28/0278 (2013.01); H04W 28/22 (2013.01); H04W 72/1284 (2013.01); H04W 72/14 (2013.01); H04W 76/10 (2018.02); H04W 88/06 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A method for a user equipment (UE) communicating with a first base station (BS) and a second BS simultaneously in a wireless communication system, the method comprising:
configuring, based on a radio resource control (RRC) signal from the first BS or the second BS, that uplink (UL) data is to be transmitted to the first BS for when an amount of data available for transmission in a packet data convergence protocol (PDCP) entity is less than a threshold;
receiving a first PDCP data from an upper layer;
transmitting a buffer status report (BSR) for the first PDCP data to request an UL grant to the second BS;
receiving a second PDCP data from the upper layer;
receiving the UL grant from the second BS in response to the BSR; and
transmitting both of the first PDCP data and the second PDCP data on the UL grant to the second BS even when an amount of the data available for transmission in the PDCP entity at the time of a transmission of the first PDCP data and the second PDCP data is less than the threshold.