Method and apparatus for semi-persistent scheduling

1. A method for semi-persistent scheduling (SPS), the method comprising:

receiving, by a base station, an identifier of a communication group to which a first user equipment belongs from the first user equipment by using a device-to-device (D2D)-dedicated resource;

determining, by the base station, a SPS resource according to the identifier of the communication group by comparing to a preset value;

sending, by the base station, a configuration of the SPS resource to the first user equipment, wherein the configuration allows for the first user equipment to perform D2D communication with a second user equipment by using the SPS resource;

receiving, by the base station, a release indication message from the first user equipment; and

in response to receiving the release indication message, releasing, by the base station, the SPS resource.

2. The method according to claim 1 , further comprising:

receiving, by the base station, a scheduling request (SR) message from the first user equipment; and

in response to receiving the SR message, sending, by the base station, a configuration of the D2D-dedicated resource for sending the identifier;

wherein receiving, by the base station, the identifier from the first user equipment comprises:

receiving, by the base station, the identifier from the first user equipment by using the D2D-dedicated resource for sending the identifier.

3. The method according to claim 1 , wherein the release indication message is a radio resource management (RRC) layer message.

4. The method according to claim 1 , further comprising:

sending, by the base station, a configuration of a resource for sending the release indication message to the first user equipment;

wherein receiving, by the base station, the release indication message from the first user equipment comprises:

receiving, by the base station, the release indication message from the first user equipment by using the resource for sending the release indication message.

5. A method for semi-persistent scheduling (SPS), the method comprising:

sending, by first user equipment, an identifier of a communication group identifier to which the first user equipment belongs to a base station by using a device-to-device (D2D)-dedicated resource, wherein the identifier allows for the base station to determine a SPS resource according to the identifier by comparing to a preset value;

receiving, by the first user equipment, a configuration of the SPS resource from the base station;

performing, by the first user equipment, D2D communication with a second user equipment by using the SPS resource; and

in response to ending performing D2D communication, sending, by the first user equipment, a release indication message to the base station, wherein the release indication message notifies the base station to release the SPS resource.

6. The method according to claim 5 , further comprising:

sending, by the first user equipment, a scheduling request (SR) message to the base station, wherein the SR message notifies the base station to allocate the first user equipment the D2D-dedicated resource for sending the identifier; and

receiving, by the first user equipment, a configuration of the D2D-dedicated resource for sending the identifier from the base station;

wherein sending, by the first user equipment, the identifier to the base station comprises:

sending, by the first user equipment, the identifier to the base station by using the D2D-dedicated resource for sending the identifier.

7. The method according to claim 5 , wherein the release indication message is a radio resource management (RRC) layer message.

8. The method according to claim 5 , further comprising:

receiving, by the first user equipment, a configuration of a resource for sending the release indication message from the base station;

wherein sending, by the first user equipment, the release indication message to the base station comprises:

sending, by the first user equipment, the release indication message to the base station by using the resource for sending the release indication message.

9. An apparatus for semi-persistent scheduling (SPS), the apparatus comprising:

a non-transitory memory storage comprising instructions; and

a processor in communication with the non-transitory memory storage, wherein the processor executes the instructions to:

receive an identifier of a communication group to which a first user equipment belongs from the first user equipment by using a device-to-device (D2D)-dedicated resource;

determine a SPS resource according to the identifier of the communication group by comparing to a preset value;

send a configuration of the SPS resource to the first user equipment, wherein the configuration allows for the first user equipment to perform D2D communication with a second user equipment by using the SPS resource;

receive a release indication message from the first user equipment; and

in response to receiving the release indication message, release the SPS resource.

10. The apparatus according to claim 9 , wherein the processor further executes the instructions to:

receive a scheduling request (SR) message from the first user equipment; and

in response to receiving the SR message, send a configuration of the D2D-dedicated resource for sending the identifier;

wherein receiving the identifier from the first user equipment comprises:

receiving the identifier from the first user equipment by using the D2D-dedicated resource for sending the identifier.

11. The apparatus according to claim 9 , wherein the release indication message is a radio resource management (RRC) layer message.

12. The apparatus according to claim 9 , wherein the processor further executes the instructions to:

send a configuration of a resource for sending the release indication message to the first user equipment;

wherein receiving the release indication message from the first user equipment comprises:

receiving the release indication message from the first user equipment by using the resource for sending the release indication message.

13. An apparatus for semi-persistent scheduling (SPS), the apparatus comprising:

a non-transitory memory storage comprising instructions; and

a processor in communication with the non-transitory memory storage, wherein the processor executes the instructions to:

send an identifier of a communication group identifier to which the first user equipment belongs to a base station by using a device-to-device (D2D)-dedicated resource, wherein the identifier allows for the base station to determine a SPS resource according to the identifier by comparing to a preset value;

receive a configuration of the SPS resource from the base station;

perform D2D communication with a second user equipment by using the SPS resource; and

in response to performing D2D communication ending, send a release indication message to the base station, wherein the release indication message notifies the base station to release the SPS resource.

14. The apparatus according to claim 13 , wherein the processor further executes the instructions to:

send a scheduling request (SR) message to the base station, wherein the SR message notifies the base station to allocate the first user equipment the D2D-dedicated resource for sending the identifier; and

receive a configuration of the D2D-dedicated resource for sending the identifier from the base station;

wherein sending the identifier to the base station comprises:

sending the identifier to the base station by using the D2D-dedicated resource for sending the identifier.

15. The apparatus according to claim 13 , wherein the release indication message is a radio resource management (RRC) layer message.

16. The apparatus according to claim 13 , wherein the processor further executes the instructions to:

receive, from the base station, a configuration of a resource for sending the release indication message to the base station;

wherein sending the release indication message to the base station comprises:

sending the release indication message to the base station by using the resource for sending the release indication message.