Methods and apparatuses for sl transmission and s-ssb transmission in unlicensed spectra

A user equipment (UE), comprising:

• at least one memory;
• and
• at least one processor coupled with the at least one memory and configured to cause the UE to:
• obtain slot structure information for an unlicensed spectrum based on configuration or pre-configuration, wherein the slot structure information includes at least one of the following:
• a first set of starting symbols for sidelink (SL) transmission;
• a second set of starting symbols and a duration for sidelink synchronization signal block (S-SSB) occasion(s);
• or
• time domain information indicating whether a slot includes S-SSB occasion(s) or not;
• and
• receive SL transmission(s) based on the slot structure information.

A base station (BS), comprising:

• at least one memory;
• and
• at least one processor coupled with the at least one memory and configured to cause the base station to:
• transmit slot structure information for an unlicensed spectrum, wherein the slot structure information includes at least one of the following:
• a first set of starting symbols for sidelink (SL) transmission;
• a second set of starting symbols and a duration for sidelink synchronization signal block (S-SSB) occasion(s);
• or
• time domain information indicating whether a slot includes S-SSB occasion(s) or not.

A processor for wireless communication, comprising:

• at least one controller coupled with at least one memory and configured to cause the processor to:
• obtain slot structure information for an unlicensed spectrum based on configuration or pre-configuration, wherein the slot structure information includes at least one of the following:
• a first set of starting symbols for sidelink (SL) transmission;
• a second set of starting symbols and a duration for sidelink synchronization signal block (S-SSB) occasion(s);
• or
• time domain information indicating whether a slot includes S-SSB occasion(s) or not;
• and
• perform a channel access procedure to initiate a channel occupancy time (COT) for SL transmission based on the slot structure information, wherein the COT includes a plurality of consecutive slots.