US 11,743,801 B2
Method and apparatus for transmitting and receiving data in communication system
Ha-Kyung Jung, Seoul (KR); and Beom-Sik Bae, Suwon-si (KR)
Assigned to Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed on May 29, 2020, as Appl. No. 15/929,942.
Application 15/929,942 is a continuation of application No. 15/344,471, filed on Nov. 4, 2016, granted, now 10,694,446.
Claims priority of application No. 10-2015-0155674 (KR), filed on Nov. 6, 2015.
Prior Publication US 2020/0296651 A1, Sep. 17, 2020
This patent is subject to a terminal disclaimer.
Int. Cl. H04W 40/12 (2009.01); H04W 84/04 (2009.01); H04W 92/10 (2009.01)
CPC H04W 40/12 (2013.01) [H04W 84/042 (2013.01); H04W 92/10 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A method for a second base station in a communication system supporting dual connectivity, the method comprising:
identifying a blockage of a link between the second base station and a terminal which is connected to the second base station and a third base station;
transmitting, to a first base station, a first message including information indicating the blockage of the link;
identifying the link between the second base station and the terminal is recovered;
in response to the identification that the link between the second base station and the terminal is recovered, transmitting, to the first base station, a second message including information indicating the recovery of the link;
receiving at least one data unit from the first base station;
transmitting, the at least one data unit to the terminal; and
discarding at least one data unit which is successfully delivered, after transmitting, to the first base station, information about at least one sequence number (SN) of data successfully delivered.