Common timing offset signaling in a non-terrestrial network

An apparatus for wireless communication, comprising:

• at least one transceiver;
• one or more memories comprising instructions;
• and
• one or more processors configured to execute the instructions to cause the apparatus to:
• receive, from a network node via the at least one transceiver, signaling indicating timing offset information, wherein the timing offset information is based at least in part on a delay associated with a satellite and a reference point associated with a non-terrestrial network (NTN);
• and
• transmit, via the at least one transceiver, an uplink signal at a transmit time that is based at least in part on the timing offset information and an epoch time.

An apparatus for wireless communication, comprising:

• at least one transceiver;
• one or more memories comprising instructions;
• and
• one or more processors configured to execute the instructions to cause the apparatus to:
• receive, from a network node via the at least one transceiver, signaling that indicates ephemeris information associated with a satellite;
• receive, from the network node via the at least one transceiver, a system information block indicating one or more common timing offset parameters that are based at least in part on one or more delays between the satellite and a reference point in a non-terrestrial network (NTN), wherein the reference point is a point where a downlink frame and an uplink frame are aligned in time with an offset;
• and
• transmit, via the at least one transceiver, an uplink signal at a transmit time, wherein the transmit time is based at least in part on (i) the one or more common timing offset parameters, (ii) a first starting time associated with an uplink slot of the uplink frame in which the uplink signal is to arrive at the reference point, and (iii) an epoch time that is associated with the ephemeris information and that is a second starting time associated with a downlink slot at the reference point.

An apparatus for wireless communication, comprising:

• at least one transceiver;
• one or more memories comprising instructions;
• and
• one or more processors configured to execute the instructions to cause the apparatus to:
• transmit, to a user equipment (UE) via the at least one transceiver, signaling that indicates ephemeris information associated with a satellite;
• transmit, to the UE via the at least one transceiver, a system information block indicating one or more common timing offset parameters that are based at least in part on one or more delays between the satellite and a reference point in a non-terrestrial network (NTN), wherein the reference point is a point where a downlink frame and an uplink frame are aligned in time with an offset;
• and
• receive, to the UE via the at least one transceiver, an uplink signal at a transmit time, wherein the transmit time is based at least in part on (i) the one or more common timing offset parameters, (ii) a first starting time associated with an uplink slot of the uplink frame in which the uplink signal is to arrive at the reference point, and (iii) an epoch time that is associated with the ephemeris information and that is a second starting time associated with a downlink slot at the reference point.