Methods and apparatuses for transmission scheduling in a wireless communication system

A method implemented at a network device, comprising:

• indicating, to a terminal device, a scheduling configuration for a device to device, D2D, transmission of the terminal device;
• determining a scheduling priority for the D2D transmission based on at least one of:
• a first comparison between an associated priority of the scheduling configuration and a first priority threshold, and a transmission restriction;
• and
• determining, based on the scheduling priority, whether to schedule a cellular uplink transmission for the terminal device in a same time resource overlapping with the D2D transmission.

An apparatus implemented at a terminal device, the apparatus comprising a processor and a memory, said memory containing instructions executable by said processor whereby said apparatus is operative to:

• receive, from a network device, a scheduling configuration for a device to device, D2D, transmission of the terminal device;
• receive, from the network device, an uplink scheduling grant for a cellular uplink transmission in a same time resource overlapping with the D2D transmission;
• determine a scheduling priority for the D2D transmission relative to the cellular uplink transmission based on at least one of:
• a first comparison between an associated priority of the scheduling configuration and a first priority threshold, and a transmission restriction;
• perform at least one of the D2D transmission and the cellular uplink transmission based on the determined scheduling priority;
• and
• wherein when it is determined that the D2D transmission has a higher priority relative to the cellular uplink transmission, the D2D transmission is performed.

An apparatus implemented at a network device, the apparatus comprising a processor and a memory, said memory containing instructions executable by said processor whereby said apparatus is operative to:

• indicate, to a terminal device, a scheduling configuration for a device to device, D2D, transmission of the terminal device;
• determine a scheduling priority for the D2D transmission based on at least one of:
• a first comparison between an associated priority of the scheduling configuration and a first priority threshold, and a transmission restriction;
• and
• determine, based on the scheduling priority, whether to schedule a cellular uplink transmission for the terminal device in a same time resource overlapping with the D2D transmission.