US Patent No. 10,368,381

METHOD FOR TERMINAL TO ESTABLISH MULTI-LINKS IN WIRELESS COMMUNICATION SYSTEM, AND APPARATUS THEREFOR


Patent No. 10,368,381
Issue Date July 30, 2019
Title Method For Terminal To Establish Multi-links In Wireless Communication System, And Apparatus Therefor
Inventorship Genebeck Hahn, Seoul (KR)
Heejeong Cho, Seoul (KR)
Eunjong Lee, Seoul (KR)
Ilmu Byun, Seoul (KR)
Assignee LG Electronics Inc., Seoul (KR)

Claim of US Patent No. 10,368,381

1. A method for establishing multiple links through relay user equipments (UEs) by an UE which is out of coverage in a wireless communication system, the method comprising:transmitting a radio resource control (RRC) connection request to a temporary relay UE having a highest device-to-device (D2D) signal quality among relay UEs located adjacent to the UE;
receiving, from the temporary relay UE, an RRC connection setup indicating a first base station (BS) that will provide a serving link to the UE and a second BS that will provide a replacement link to the UE among BSs to which the relay UEs are connected;
establishing the serving link through a first relay UE by transmitting an RRC connection complete message to the first relay UE connected to the first BS among the relay UEs; and
establishing the replacement link, where unicast data transmission and reception is inactivated, through a second relay UE connected to the second BS among the relay UEs.