Methods and devices for semi-persistent scheduling

1. A method implemented at a terminal device, the method comprising:

receiving, from a base station, priority information associated with at least one of two or more semi-persistent scheduling (SPS) configurations for the terminal device; and

selecting, based on the priority information, an SPS configuration from the two or more SPS configurations for packet transmission, wherein

receiving the priority information associated with at least one of the two or more SPS configurations comprises receiving from the base station first priority information associated with a first SPS configuration and second priority information associated with a second SPS configuration,

the first priority information is associated with a first priority level,

the second priority information is associated with a second priority level, and

selecting an SPS configuration from the two or more SPS configurations includes selecting, based on the first and second priority levels, one of the first SPS configuration and the second SPS configuration.

2. The method of claim 1 , wherein receiving the priority information comprises:

receiving, from the base station, the priority information indicative of a priority level of the at least one SPS configuration.

3. The method of claim 2 , wherein

the priority level is associated with an uplink grant indicating an amount of resources to be allocated for uplink transmission, and

selecting the SPS configuration comprises selecting the SPS configuration from the two or more SPS configurations based on the amount of resources to be allocated.

4. The method of claim 3 , wherein the amount of the resources to be allocated includes either a number of physical resource blocks or a size of a transport block.

5. The method of claim 2 , wherein

the priority level is associated with a packet type to be used by the terminal device, and

selecting the SPS configuration comprises: determining the packet type to be used by the terminal device; and selecting the SPS configuration from the two or more SPS configurations based on the packet type.

6. The method of claim 2 , wherein

the priority level is associated with a traffic type to be used by the terminal device, and

selecting the SPS configuration comprises: determining the traffic type to be used by the terminal device; and selecting the SPS configuration from the two or more SPS configurations based on the traffic type.

7. The method of claim 2 , wherein receiving the priority information comprises:

receiving, from the base station, an indication of a priority level of the at least one SPS configuration in an information element (IE); or receiving, from the base station, an indication of a priority level of a packet type for the terminal device, wherein the priority level of the packet type is associated with a priority level of the at least one SPS configuration; or receiving, from the base station, an indication of a logic channel identification corresponding to a traffic type for the terminal device, wherein the logic channel identification is associated with a priority level of the at least one SPS configuration; or receiving, from the base station, an indication of an index of the at least one SPS configuration; and

determining a priority level of the at least one SPS configuration based on the index.

8. The method of claim 2 , further comprising sending, to the base station, an indication of the selected SPS configuration.

9. The method of claim 2 , wherein the two or more SPS configurations are applied for both cellular and device-to-device communications.

10. The method of claim 1 , wherein

the first priority information comprises or consists of information specifying or indicating the first priority level, and

the second priority information comprises or consists of information specifying or indicating the second priority level.