Patent ID: 11895523
Assignee: NTT DOCOMO, INC.
Field: Digital communication (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 3:
4. A communication method by a terminal, the method comprising:
communicating with a first base station apparatus and a second base station apparatus, wherein the first base station apparatus is a master node in a New Radio (NR) radio communication system and the second base station apparatus is a secondary node in the NR radio communication system;
receiving from the first base station apparatus an instruction to measure a system frame number and frame timing difference (SFTD) representing a system frame number and frame timing difference between cells;
controlling a transmission of the SFTD between a cell of the first base station apparatus and a cell of the second base station apparatus, the SFTD being measured based on the instruction to measure the SFTD; and
transmitting to the first base station apparatus a measurement result including the measured SFTD using a parameter configuration that is the same as a parameter configuration of an SFTD measurement result in a case in which a master node is an Evolved Universal Terrestrial Radio Access (E-UTRA) radio communication system and a secondary node is an NR radio communication system, and
wherein the instruction to measure SFTD includes information indicating that a Primary SCG Cell (PSCell) of the second base station apparatus or one or more neighboring cells of the second base station apparatus is a cell for which SFTD is to be measured.