Apparatus and method for providing access in non-terrestrial network

A method performed by a user equipment (UE), comprising:

• receiving, from a non-terrestrial network (NTN) device for providing NR access, a message including NTN configuration information, wherein the NTN configuration information comprises:
• polarization information for downlink transmission on service link between a satellite and the UE,
• polarization information for uplink transmission on the service link between the satellite and the UE,
• ephemeris information of the satellite, and
• scheduling offset information used for a timing relationship modified for NTN;
• based on identifying that a serving cell of the UE is associated with a frequency range (FR) 2 band of NR, determining a reference subcarrier spacing (SCS) used for the FR 2 of NR as 60 kHz;
• and
• identifying the scheduling offset information from the NTN configuration information in accordance with the reference SCS being 60 kHz,
• wherein a value of the scheduling offset information is applied to a difference between physical downlink control channel (PDCCH) reception and physical uplink control channel (PUCCH) transmission or a difference between PDCCH reception and physical uplink shared channel (PUSCH) transmission, and
• wherein the value of the scheduling offset information is indicated by a number of slots, in units of the reference SCS being 60 kHz.

A non-terrestrial network (NTN) device for providing new radio (NR) access, comprising:

• at least one transceiver;
• and
• at least one processor operatively coupled to the at least one transceiver,
• wherein the at least one processor is configured to:
• determine whether a serving cell is associated with a frequency range (FR) 2 of NR or not;
• in accordance with a determination that the serving cell is associated with the FR2, determine a reference subcarrier spacing (SCS) used for the FR 2 of NR as 60 kHz to determine values of elements in NTN configuration information;
• generate the NTN configuration information based on the reference SCS being 60kHz;
• and
• transmit a message including the generated NTN configuration information to a user equipment (UE) via an NTN payload,
• wherein the NTN configuration information comprises:
• polarization information for downlink transmission on service link between a satellite and the UE,
• polarization information for uplink transmission on the service link between the satellite and the UE,
• ephemeris information of the satellite, and
• scheduling offset information used for a timing relationship modified for NTN,
• wherein a value of the scheduling offset information is applied to a difference between physical downlink control channel (PDCCH) reception and physical uplink control channel (PUCCH) transmission or a difference between PDCCH reception and physical uplink shared channel (PUSCH) transmission, and
• wherein the value of the scheduling offset information is indicated by a number of slots, in units of the reference SCS being 60 kHz.

A user equipment (UE), comprising:

• at least one transceiver;
• and
• at least one processor operatively coupled to the at least one transceiver,
• wherein the at least one processor is configured to:
• receive, from a non-terrestrial network (NTN) device for providing NR access, a message including NTN configuration information, wherein the NTN configuration information comprises:
• polarization information for downlink transmission on service link between a satellite and the UE,
• polarization information for uplink transmission on the service link between the satellite and the UE,
• ephemeris information of the satellite, and
• scheduling offset information used for a timing relationship modified for NTN;
• based on identifying that a serving cell of the UE is associated with a frequency range (FR) 2 band of NR, determine a reference subcarrier spacing (SCS) used for the FR 2 of NR as 60 kHz;
• and
• identify the scheduling offset information from the NTN configuration information in accordance with the reference SCS being 60 kHz,
• wherein a value of the scheduling offset information is applied to a difference between physical downlink control channel (PDCCH) reception and physical uplink control channel (PUCCH) transmission or a difference between PDCCH reception and physical uplink shared channel (PUSCH) transmission, and
• wherein the value of the scheduling offset information is indicated by a number of slots, in units of the reference SCS being 60 kHz.