Patent ID: 9622272
Date: 2017-04-11
CPC Classifications: H04W

Claim:
1. A method of performing a communication by a user equipment having dual connectivity in a heterogeneous cell environment, wherein a macro cell and a small cell co-exist, the method comprising: transmitting a first report message to the macro cell, the first report message reporting that a downlink signal is received from a small cell at an intensity level greater than or equal to a threshold value; receiving a RRC configuration message (Radio Resource Control configuration message) from the macro cell, the RRC configuration message indicating a connection with a small cell cluster including the small cell; adding a plurality of connections with a plurality of small cells included in the small cell cluster in accordance with addition time information included in the RRC configuration message; and activating each of the plurality of connections with the plurality of small cells in accordance with activation time information, the activation time information being included in the RRC configuration message, wherein the small cell cluster is determined based on information of a location relationship between the plurality of small cells, and wherein, when the RRC configuration message comprises an indicator indicating an application of a movement speed of the user equipment, the addition time information and the activation time information are adjusted in accordance with the movement speed.