Uplink and Downlink Transmissions in Satellite Switching

A base station comprising:

• one or more processors;
• and
• memory storing instructions that, when executed by the one or more processors, cause the base station to:
• transmit, to a wireless device, a system information block (SIB) comprising:
• a first parameter indicating a satellite switch to a first satellite without a physical cell identifier (PCI) changing;
• a first time indicating information on a time when a cell, provided via a non-terrestrial network (NTN), stops serving a covering area;
• and
• a second time indicating information on a time that the first satellite starts serving the covering area;
• initiate the satellite switch based on the SIB comprising the first parameter, wherein:
• the satellite switch is a soft satellite switch;
• and
• a satellite switch gap for the satellite switch:
• starts from the second time;
• and
• is determined based on a time difference between the second time and the first time;
• and
• receive, via the first satellite, at least one uplink transmission.

A non-transitory computer-readable medium comprising instructions that, when executed by one or more processors of a wireless device, cause the wireless device to:

• receive, from a base station, a system information block (SIB) comprising:
• a first parameter indicating a satellite switch to a first satellite without a physical cell identifier (PCI) changing;
• a first time indicating information on a time when a cell, provided via a non-terrestrial network (NTN), stops serving a covering area;
• and
• a second time indicating information on a time that the first satellite starts serving the covering area;
• initiate the satellite switch based on the SIB comprising the first parameter, wherein:
• the satellite switch is a soft satellite switch;
• and
• a satellite switch gap for the satellite switch:
• starts from the second time;
• and
• is determined based on a time difference between the second time and the first time;
• and
• transmit, via the first satellite, at least one uplink transmission.