Base station scheduling of sidelink feedback reporting

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 first wireless device, a timing offset indicator indicating an offset, in a number of slots, between a sidelink feedback resource and an uplink feedback resource for transmitting a sidelink feedback report;
• and
• receive, from the first wireless device, the sidelink feedback report in an uplink slot, wherein:
• the uplink slot is a last uplink feedback slot overlapping with a first sidelink feedback resource, within a sidelink slot, in time;
• the first sidelink feedback resource is offset from a second sidelink feedback resource by the number of slots;
• and
• the second sidelink feedback resource is a feedback resource for a sidelink transport block transmitted by the first wireless device to a second wireless device.

A system comprising:

• a base station comprising:
• one or more first processors and first memory storing first instructions that, when executed by the one or more first processors, cause the base station to:
• transmit a timing offset indicator indicating an offset, in a number of slots, between a sidelink feedback resource and an uplink feedback resource for transmitting a sidelink feedback report;
• and
• receive the sidelink feedback report in an uplink slot;
• a first wireless device comprising:
• one or more second processors and second memory storing second instructions that, when executed by the one or more second processors, cause the first wireless device to:
• receive, from the base station, the timing offset indicator;
• transmit a sidelink transport block;
• receive feedback for the sidelink transport block;
• and
• transmit, to the base station and in the uplink slot, the sidelink feedback report, comprising the feedback, wherein:
• the uplink slot is a last uplink feedback slot overlapping with a first sidelink feedback resource, within a sidelink slot, in time;
• the first sidelink feedback resource is offset from a second sidelink feedback resource by the number of slots;
• and
• the second sidelink feedback resource is a feedback resource of the feedback for the sidelink transport block;
• and
• a second wireless device comprising:
• one or more third processors and third memory storing third instructions that, when executed by the one or more third processors, cause the second wireless device to:
• receive, from the first wireless device, the sidelink transport block;
• and
• transmit, to the first wireless device and via the second sidelink feedback resource, the feedback for the sidelink transport block.