Data transmission method and device, and base station

1. A data transmission method, comprising:

identifying a priority of a received user plane data packet; and

transmitting and processing the received user plane data packet according to the identified priority;

wherein the priority of the received user plane data packet is identified through a sequence number identifying an order of the received user plane data packet;

wherein the priority comprises a first priority and a second priority, a priority level of the first priority is higher than a priority level of the second priority, a user plane data packet of the first priority comprises a retransmitted data packet, and a user plane data packet of the second priority comprises an initially transmitted data packet; and

wherein the transmitting and processing the received user plane data packet according to the identified priority comprises: in a case where the received user plane data packet comprises the user plane data packet of the first priority and the user plane data packet of the second priority, cascading the user plane data packet of the first priority, and then cascading the user plane data packet of the second priority.

2. The method of claim 1 , wherein after identifying the priority of the received user plane data packet, the method further comprises at least one of;

in response to determining that the priority comprises the first priority, buffering the user plane data packet of the first priority in a first buffer; or

in response to determining that the priority comprises the second priority, buffering the user plane data packet of the second priority in a second buffer.

3. The method of claim 1 , wherein the priority of the received user plane data packet is identified through the sequence number identifying the order of the received user plane data packet and at least one of:

a priority identifier identifying the priority of the received user plane data packet; or

a data packet type identifying a type of the received user plane data packet.

4. A medium access control entity, configured to execute the method of claim 1 .

5. The medium access control entity of claim 4 , wherein the medium access control entity is disposed in a distributed unit (DU) of a base station.

6. A computer-readable storage medium, configured to store computer-executable instructions for executing the method of claim 1 .

7. The method of claim 2 , wherein the priority of the received user plane data packet is identified through the sequence number identifying the order of the received user plane data packet and at least one of:

a priority identifier identifying the priority of the received user plane data packet; or

a data packet type identifying a type of the received user plane data packet.

8. A data transmission device, comprising:

a processor; and

a memory for storing instructions executable by the processor, wherein the processor is configured to:

identify a priority of a received user plane data packet; and

transmit and process the received user plane data packet according to the identified priority;

wherein the priority of the received user plane data packet is identified through a sequence number identifying an order of the received user plane data packet;

wherein the priority comprises a first priority and a second priority, a priority level of the first priority is higher than a priority level of the second priority, a user plane data packet of the first priority comprises a retransmitted data packet, and a user plane data packet of the second priority comprises an initially transmitted data packet; and

wherein the processor is configured to: in a case where the received user plane data packet comprises the user plane data packet of the first priority and the user plane data packet of the second priority, cascade the user plane data packet of the first priority, and then cascade the user plane data packet of the second priority.

9. The device of claim 8 , wherein the processor is further configured to:

in response to determining that the priority comprises the first priority, buffer the user plane data packet of the first priority; and

in response to determining that the priority comprises the second priority, buffer the user pane data packet of the second priority.

10. The device of claim 8 , wherein the processor is further configured to identify the priority of the received user plane data packet through the sequence number identifying the order of the received user plane data packet and at least one of:

a priority identifier identifying the priority of the received user plane data packet; or

a data packet type identifying a type of the received user plane data packet.

11. A medium access control entity, comprising the data transmission device of claim 8 .

12. A base station, comprising a centralized unit (CU) and a distributed unit (DU) of a base station, wherein the DU comprises the medium access control entity of claim 11 .