METHOD AND DEVICE FOR TRANSMITTING DATA IN WIRELESS COMMUNICATION SYSTEM SUPPORTING DUAL CONNECTIVITY

摘要

Disclosed are a method and a device for transmitting data in a wireless communication system supporting dual connectivity. The method for transmitting data in a wireless communication system supporting dual connectivity comprises the steps of: transmitting channel state information between a small base station and a terminal to a macro base station; receiving a radio resource control (RRC) connection reconfiguration message from the macro base station; releasing a connection with the small base station on the basis of the RRC connection reconfiguration message; and transmitting, to the macro base station, a PDCP state report including information on a sequence number of a packet data convergence protocol (PDCP) service data unit (SDU) which has not been received.

主权项

1. A method of receiving, by user equipment, data again in a wireless communication system supporting dual connectivity, the method comprising:
receiving, from a small evolved-NodeB (eNB), a part of packet data convergence protocol (PDCP) service data units (SDUs); sending, to a macro eNB, information about a channel state between the small eNB and the user equipment; receiving, from the macro eNB, a radio resource control (RRC) connection reconfiguration message; releasing connection with the small eNB based on the RRC connection reconfiguration message; and sending, to the macro eNB, a PDCP status report comprising information about a sequence number of at least one PDCP SDU not received due to the release of the connection with the small eNB.