BASE STATION AND CONTROL METHOD THEREOF

Title:

BASE STATION AND CONTROL METHOD THEREOF

Document Type and Number:

Japanese Patent JP2018174549

Kind Code:

A

Abstract:

PROBLEM TO BE SOLVED: To provide a method for a second base station to instruct a first base station to discard downlink data already transmitted to an SeNB in the case of a configuration capable of transmitting second base station (MeNB) downlink data to a terminal via a cell of the second base station and the first base station (SeNB) in a dual connectivity system.SOLUTION: A radio communication system includes a first base station 30 and a second base station 20 capable of transmitting downlink data received from a core network to a terminal via the second base station itself and the first base station. The second base station transmits information to identify downlink data to be discarded of downlink data transmitted to the first base station and instructions to discard the downlink data identified by the information to the first base station. The first base station discards downlink data yet to be transmitted to the terminal of the downlink data identified by the information.SELECTED DRAWING: Figure 7

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