| CPC H04W 24/08 (2013.01) [H04B 7/18513 (2013.01); H04B 7/18519 (2013.01)] | 17 Claims |
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1. A method, comprising:
receiving a measurement configuration from a serving cell of a user equipment (UE) in a non-terrestrial network (NTN) providing mobile communication service based on satellites belonging to the NTN, the satellites being low Earth orbiting (LEO) satellites or geostationary Earth orbiting (GEO) satellites, the measurement configuration indicating a first synchronization signal block (SSB) based measurement timing configuration (SMTC) and a second SMTC, the first SMTC specifying first SMTC windows aligning with SSB signals from the serving cell of the UE, the second SMTC specifying second SMTC windows aligning with SSB signals from a first neighbor cell of the UE, the serving cell associated with a first satellite, the first neighbor cell associated with a second satellite, a third SMTC that specifies third SMTC windows aligning with SSB signals of a second neighbor cell of the UE operating on a second carrier, and a fourth SMTC that specifies fourth SMTC windows aligning with SSB signals of a third neighbor cell of the UE operating on the second carrier, and wherein the measurement configuration further indicates a first measurement gap configuration corresponding to the second neighbor cell and a second measurement gap configuration corresponding to the third neighbor cell, the first measurement gap specifying measurement gaps that are aligned with the third SMTC windows, the second measurement gap specifying measurement gaps that are aligned with the fourth SMTC windows;
performing a measurement based on the first SMTC corresponding to the serving cell and the second SMTC corresponding to the first neighbor cell; and
performing a measurement on the second carrier based on the first measurement gap configuration, the second measurement gap configuration, the third SMTC, and the fourth SMTC
receiving information indicating a position of the second satellite associated with the first neighbor cell from the serving cell;
determining an SMTC offset based on the position of the second satellite associated with the first neighbor cell, the SMTC offset being based on a timing of the serving cell, the SMTC offset being one of:
a time offset with respect to the first SMTC,
a time offset with respect to the second SMTC, or
a time offset indicating a starting position of an SMTC window within a periodicity of the second SMTC; and
reporting a service link propagation delay difference between the serving cell and the first neighbor cell based on the SMTC offset.
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