Rabin & Berdo, P.C.
Handover method in mobile communication system
An operation method of a terminal, for a handover in a mobile communication system, may comprise performing measurement on beams of a target base station, and transmitting a measurement result of at least one beam of the target base station to a source base station; receiving, from the source base station, a handover command message including information on at least one RACH resource for the at least one beam; transmitting a handover indication message including information on at least one random access target beam having an order of channel conditions determined based on a latest measurement to the source base station and to the target base station through the source base station; and determining an optimal beam among the at least one random access target beam, and transmitting a RACH to the target base station through a RACH resource allocated to the optimal beam.
Electronics and Telecommunications Research Institute
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Hee Soo Tae Joong Yu Ro Eun Kyung Hyun Seo An Seok Hyun
Lee Kim Lee Kim Park Lee Lee