FIELD: wireless communication.
SUBSTANCE: stated technical result is achieved by the gNB node (200) including a distributed unit (gNB-DU) (230) of the gNB node, communicating with the user equipment (UE) (100), and a central unit (gNB-CU) (210) of the gNB node, connected to gNB-DU (230) and communicating with the UE (100) via gNB-DU (230), wherein the gNB-CU unit (210) includes a transmission unit (211) transmitting the gNB-DU (230) request signal, the gNB-DU unit (230) includes a reception unit (233) receiving the request signal, and a transmission unit (231) transmitting a reference system frame number and a reference time in a preset network, associated with the reference system frame number, to the gNB-CU (210) based on the received request signal, the gNB-CU (210) transmission unit (211) transmits a radio resource control (RRC) message containing the reference system frame number and the time reference to the user equipment (100) via gNB-DU (230).
EFFECT: possibility for the base station to issue an accurate time reference to the user equipment when top-level division is applied.
6 cl, 11 dwg
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