Patent ID: 9521605
Filing Date: 2016-12-13
CPC Classification: H04B,H04W

Claim Text:
1. A method for handover to perform handover between beams by a terminal in a network environment in which a plurality of beams are provided within a base station, the method comprising: measuring, by a terminal, signal strength of a serving beam and signal strength of a target beam; transmitting, by a terminal, a first measurement report message to a the base station when the signal strength of the serving beam and the signal strength of the target beam satisfy a first condition; performing inter-beam coordinated scheduling (IBCS) to transmit and receive data through the serving beam and the target beam when the first condition is satisfied; transmitting, by a terminal, a second measurement report message to the base station when the signal strength of the serving beam and the signal strength of the target beam satisfy a second condition in a state in which the IBCS is performed; performing, by a terminal, switching from the serving beam to the target beam when receiving a message commanding handover from the base station; and informing the base station of handover completion after performing the handover, wherein the first condition represents that the signal strength of the serving beam is greater than the signal strength of the target beam by a first offset; and the second condition represents that the signal strength of the target beam is maintained greater than the signal strength of the serving beam by a second offset during a predetermined time.