Assistance information indicating logical channel for SPS traffic

1. A method comprising:

transmitting, by a wireless device, at least one first message comprising capability parameters indicating whether the wireless device supports multiple semi persistent scheduling (SPS) configurations for vehicle-to-base station communications;

transmitting, by the wireless device, a message comprising one or more SPS assistance information comprising:

a logical channel identity associated with an SPS traffic, wherein the logical channel identity identifies a logical channel for transmitting the SPS traffic, and the SPS assistance information assists a base station to configure the SPS traffic transmission; and

a message size associated with the SPS traffic;

receiving, by the wireless device, at least one second message comprising:

at least one uplink SPS configuration parameter, wherein the at least one uplink SPS configuration parameter comprises at least one parameter indicating one or more traffic types corresponding to the SPS traffic; and

receiving an activation command indicating an activation of an SPS grant, wherein one or more parameters in the SPS grant are based on the SPS assistance information.

2. The method of claim 1 , further comprising receiving SPS configuration parameters comprising a radio network temporary identifier and SPS configuration index, wherein the activation command is associated with the radio network temporary identifier.

3. The method of claim 2 , wherein the activation command comprises the SPS configuration index.

4. The method of claim 1 , wherein the message is a radio resource control message.

5. The method of claim 1 , wherein the at least one second message is based on at least one of:

the capability parameters indicating support of the multiple SPS configurations; and the assistance information.

6. The method of claim 1 , wherein the activation command comprises the SPS configuration index.

7. A wireless device comprising:

one or more processors; and

memory storing instructions that, when executed by the one or more processors, cause the wireless device to:

transmit, by a transceiver or a communication interface in the wireless device, at least one first message comprising capability parameters indicating whether the wireless device supports multiple semi persistent scheduling (SPS) configurations for vehicle-to-base station communications;

transmit, by the transceiver or a communication interface in the wireless device, a message comprising one or more SPS assistance information comprising:

a logical channel identity associated with an SPS traffic, wherein the logical channel identity identifies a logical channel for transmitting the SPS traffic, and the SPS assistance information assists a base station to configure the SPS traffic transmission; and

a message size associated with the SPS traffic;

receive, by the transceiver or the communication interface, at least one second message comprising:

at least one uplink SPS configuration parameter, wherein the at least one uplink SPS configuration parameter comprises at least one parameter indicating one or more traffic types corresponding to the SPS traffic; and

receive, by the transceiver or the communication interface, an activation command indicating an activation of an SPS grant, wherein one or more parameters in the SPS grant are based on the SPS assistance information.

8. The wireless device of claim 7 , wherein the instructions, when executed, further cause the wireless device to receive SPS configuration parameters comprising a radio network temporary identifier and SPS configuration index, wherein the activation command is associated with the radio network temporary identifier.

9. The wireless device of claim 8 , wherein the activation command comprises the SPS configuration index.

10. The wireless device of claim 7 , wherein the message is a radio resource control message.

11. The wireless device of claim 7 , wherein the at least one second message is based on at least one of:

the capability parameters indicating support of the multiple SPS configurations; and the assistance information.

12. The wireless device of claim 7 , wherein the activation command comprises the SPS configuration index.