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1. (WO2019064204) PDCP UL SPLIT AND PRE-PROCESSING
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CLAIMS

What is claimed is:

1. A method by a user equipment, UE, (110) configured to transmit packet data units, PDUs, by a first Radio Link Control, RLC, entity via a first uplink transmission path and/or by a second RLC entity via a second uplink transmission path, the method (200) comprising: determining (202) a total amount of data volume buffered for PDU transmission, wherein the total amount of data volume comprises Packet Data Convergence Protocol, PDCP, data volume and RLC data volume pending for initial transmission in the two RLC entities; and

reporting (204) the PDCP data volume to at least the first uplink transmission path, based on whether the total amount of data volume meets or exceeds a first threshold, wherein the reporting (204) comprises:

in response to determining that the total amount of data volume meets or exceeds the first threshold, indicating (206) the PDCP data volume to both the first uplink transmission path and the second uplink transmission path, and

in response to determining that the total amount of data volume does not meet the first threshold, indicating (208) the PDCP data volume to only the first uplink transmission path.

2. The method (200) according to claim 1, wherein the first uplink transmission path is a prioritized uplink transmission path and the second uplink transmission path is an unprioritized uplink transmission path.

3. The method (200) according to claim 1 or 2, wherein the first RLC entity belongs to a Master Cell Group, MCG, and the second RLC entity belongs to a Secondary Cell Group, SCG.

4. The method (200) according to any of claims 1-3, further comprising, in response to determining that the total amount of data volume does not meet the first threshold, submitting the PDCP data volume only to the first RLC entity.

5. The method (200) according to any of claims 1-4, wherein the first uplink transmission path corresponds to a MAC entity associated with the first RLC entity, and wherein the second uplink transmission path corresponds to a MAC entity associated with the second RLC entity.

6. A user equipment, UE, (110) configured to transmit packet data units, PDUs, by a first Radio Link Control, RLC, entity via a first uplink transmission path and/or by a second RLC entity via a second uplink transmission path, the UE (110) comprising:

transceiver circuitry (122) configured to send and receive radio signals; and processing circuitry (120) operatively associated with the transceiver circuitry (122) and configured to:

determine a total amount of data volume buffered for PDU transmission, wherein the total amount of data volume comprises Packet Data Convergence Protocol, PDCP, data volume and RLC data volume pending for initial transmission in the two RLC entities; and report the PDCP data volume to at least the first uplink transmission path, based on whether the total amount of data volume meets or exceeds a first threshold, wherein the reporting (204) comprises:

in response to determining that the total amount of data volume meets or exceeds the first threshold, indicating (206) the PDCP data volume to both the first uplink transmission path and the second uplink transmission path, and

in response to determining that the total amount of data volume does not meet the first threshold, indicating (208) the PDCP data volume to only the first uplink transmission path.

7. The UE (110) according to claim 6, wherein the first uplink transmission path is a prioritized uplink transmission path and the second uplink transmission path is an unprioritized uplink transmission path.

8. The UE (110) according to claim 6 or 7, wherein the first RLC entity belongs to a Master Cell Group, MCG, and the second RLC entity belongs to a Secondary Cell Group, SCG.

9. The UE (110) according to any of claims 6-8, wherein the processing circuitry (120) is configured to, in response to determining that the total amount of data does not meet the first threshold, submit the PDCP data volume only to the first RLC entity.

10. The UE (110) according to any of claims 6-9, wherein the first uplink transmission path corresponds to a MAC entity associated with the first RLC entity, and wherein the second uplink transmission path corresponds to a MAC entity associated with the second RLC entity.

11. A method by a user equipment, UE, (110) configured to transmit packet data units, PDUs, by a first Radio Link Control, RLC, entity via a first uplink transmission path and/or by a second RLC entity via a second uplink transmission path, the method (300) comprising: determining (302) a total amount of data volume buffered for PDU transmission, wherein the total amount of data volume comprises Packet Data Convergence Protocol, PDCP, data volume and RLC data volume pending for initial transmission in the two associated RLC entities; and

deciding (304) whether submission of the PDCP data volume is allowed to either of the two RLC entities or to only the first RLC entity, based on whether the total amount of data volume meets or exceeds a first threshold, wherein the deciding comprises:

in response to determining that the total amount of data volume meets or

exceeds the first threshold, deciding (306) that the PDCP data volume is allowed to be submitted to either of the two RLC entities, and in response to determining that the total amount of data volume does not meet the first threshold, deciding (308) that the PDCP data volume is allowed to be submitted to only the first RLC entity.

12. The method (300) according to claim 11, further comprising submitting the PDCP data volume according to the decision.

13. The method (300) according to claim 11 or 12, further comprising, in response to deciding that the PDCP data volume is allowed to be submitted to either of the two RLC

entities, submitting the PDCP data volume to whichever of the two RLC entities requested the PDCP data volume.

14. The method (300) according to any of claims 11-13, wherein the first uplink transmission path is a prioritized uplink transmission path and the second uplink transmission path is an unprioritized uplink transmission path.

15. The method (300) according to any of claims 11-14, wherein the first RLC entity belongs to a Master Cell Group, MCG, and the second RLC entity belongs to a Secondary Cell Group, SCG.

16. The method (300) according to any of claims 11-15, wherein the first uplink transmission path corresponds to a MAC entity associated with the first RLC entity, and wherein the second uplink transmission path corresponds to a MAC entity associated with the second RLC entity.

17. A user equipment, UE, (110) configured to transmit packet data units, PDUs, by a first Radio Link Control, RLC, entity via a first uplink transmission path and/or by a second RLC entity via a second uplink transmission path, the UE (110) comprising:

transceiver circuitry (122) configured to send and receive radio signals; and processing circuitry (120) operatively associated with the transceiver circuitry (122) and configured to:

determine a total amount of data volume buffered for PDU transmission, wherein the total amount of data volume comprises Packet Data Convergence Protocol, PDCP, data volume and RLC data volume pending for initial transmission in the two RLC entities; and decide whether submission of the PDCP data volume is allowed to either of the two RLC entities or to only the first RLC entity, based on whether the total amount of data volume meets or exceeds a first threshold, wherein the processing circuitry (120) is configured to:

in response to determining that the total amount of data volume meets or exceeds the first threshold, decide that the PDCP data

volume is allowed to be submitted to either of the two RLC entities, and

in response to determining that the total amount of data volume does not meet the first threshold, decide that the PDCP data volume is allowed to be submitted to only the first RLC entity.

18. The UE (110) according to claim 17, wherein the processing circuitry (120) is configured to submit the PDCP data volume according to the decision.

19. The UE (110) according to claim 17 or 18, wherein the processing circuitry (120) is configured to, in response to deciding that the PDCP data volume is allowed to be submitted to either of the two RLC entities, submit the PDCP data volume to whichever of the two RLC entities requested the PDCP data volume.

20. The UE (110) according to any of claims 17-19, wherein the first uplink transmission path is a prioritized uplink transmission path and the second uplink transmission path is an unprioritized uplink transmission path.

21. The UE (110) according to any of claims 17-20, wherein the first RLC entity belongs to a Master Cell Group, MCG, and the second RLC entity belongs to a Secondary Cell Group, SCG.

22. The UE (110) according to any of claims 17-21, wherein the first uplink transmission path corresponds to a MAC entity associated with the first RLC entity, and wherein the second uplink transmission path corresponds to a MAC entity associated with the second RLC entity.

23. A computer program product comprising program instructions for a processor (120) in a wireless device (110), wherein said program instructions are configured so as to cause the wireless device (110) to carry out a method (200, 300) according to any of claims 1-5 and 11-16 when the program instructions are executed by the processor (120).

24. A non-transitory computer-readable medium (130) comprising, stored thereupon, the computer program product of claim 23.

25. A wireless device (110) adapted to perform any method (200, 300) of claims 1-5 and 11-16.

26. A user equipment, UE, (110) configured to transmit packet data units, PDUs, by a first Radio Link Control, RLC, entity via a first uplink transmission path and/or by a second RLC entity via a second uplink transmission path, the UE (110) comprising:

a determining module (1202) for determining a total amount of data volume buffered for PDU transmission, wherein the total amount of data volume comprises Packet Data Convergence Protocol, PDCP, data volume and RLC data volume pending for initial transmission in the two RLC entities; and

a reporting module (1204) for reporting the PDCP data volume to at least the first uplink transmission path, based on whether the total amount of data volume meets or exceeds a first threshold, wherein the reporting comprises:

in response to determining that the total amount of data volume meets or exceeds the first threshold, indicating the PDCP data volume to both the first uplink transmission path and the second uplink transmission path, and

in response to determining that the total amount of data volume does not meet the first threshold, indicating the PDCP data volume to only the first uplink transmission path.

27. A user equipment, UE, (110) configured to transmit packet data units, PDUs, by a first Radio Link Control, RLC, entity via a first uplink transmission path and/or by a second RLC entity via a second uplink transmission path, the UE (110) comprising:

a determining module (1302) for determining a total amount of data volume buffered for PDU transmission, wherein the total amount of data volume comprises Packet Data Convergence Protocol, PDCP, data volume and RLC data volume pending for initial transmission in the two RLC entities; and

a deciding module (1304) for deciding whether submission of the PDCP data volume is allowed to either of the two RLC entities or to only the first RLC entity, based on whether the total amount of data volume meets or exceeds a first threshold, wherein the deciding comprises:

in response to determining that the total amount of data volume meets or exceeds the first threshold, deciding that the PDCP data volume is allowed to be submitted to either of the two RLC entities, and in response to determining that the total amount of data volume does not meet the first threshold, deciding that the PDCP data volume is allowed to be submitted to only the first RLC entity.