CPC H04W 40/12 (2013.01) [H04W 84/042 (2013.01); H04W 92/10 (2013.01)] | 22 Claims |
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.
|