Radio bearer reconfiguration method, radio bearer establishment method, user equipment, and base station

• US 10,555,362 B2
• Filed: 07/31/2017
• Issued: 02/04/2020
• Est. Priority Date: 01/29/2015
• Status: Active Grant

• Current Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Original Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Inventors: Quan, Wei, Li, Bingzhao, Yang, Xiaodong, Hu, Zhenxing, Miao, Jinhua, Zhang, Jian
• Primary Examiner(s): Nowlin, Eric
• Application Number:
  US15/664,257
• Publication Number:
  US 20170353992A1
• Time in Patent Office: 918 Days
• CPC Class Codes: H04W 36/06 Reselecting a communication resource in the serving access point
• CPC Class Codes: H04W 76/10 Connection setup
• CPC Class Codes: H04W 76/20 Manipulation of established connections
• CPC Class Codes: H04W 76/30 Connection release
• CPC Class Codes: H04W 76/34 Selective release of ongoing connections

Abstract

Embodiments of the present disclosure relate to the field of communications technologies, and provide a radio bearer reconfiguration method, a radio bearer establishment method, user equipment, and a base station. The method includes receiving, by a UE, a radio bearer reconfiguration indication sent by abase station, where the radio bearer reconfiguration indication includes a radio bearer identifier and a target configuration parameter, the radio bearer identifier indicates a target radio bearer that needs to be reconfigured, and the target configuration parameter corresponds to a configuration item of the target radio bearer that needs to be reconfigured; releasing, by the UE, the target radio bearer; and transmitting, by the UE, signaling and/or data on the corresponding target radio bearer according to the target configuration parameter.

Claims

1. A radio bearer reconfiguration method, the radio bearer reconfiguration method comprising:

receiving, by a user equipment (UE), a radio bearer reconfiguration indication sent by a base station, wherein the radio bearer reconfiguration indication comprises a radio bearer identifier and a target configuration parameter, the radio bearer identifier indicates a target radio bearer that needs to be reconfigured, the target configuration parameter corresponds to a configuration item of the target radio bearer that needs to be reconfigured, and the radio bearer reconfiguration indication does not include a second bearer identifier that indicates a second radio bearer currently established between the UE and the base station that does not need to be reconfigured;

releasing, by the UE, the target radio bearer that needs to be reconfigured without releasing the second radio bearer; and

transmitting, by the UE, at least one of signaling and data on a corresponding target radio bearer according to the target configuration parameter,

wherein before releasing, by the UE, the target radio bearer that needs to be reconfigured, the method further comprises;

reestablishing, by the UE, a protocol entity of the target radio bearer that needs to be reconfigured, to process a data packet that is temporarily not completely processed, wherein the protocol entity comprises at least one of a packet data convergence protocol (PDCP) layer entity and a radio link control (RLC) layer entity, and

wherein reestablishing, by the UE, the protocol entity of the target radio bearer that needs to be reconfigured, to process the data packet that is temporarily not completely processed comprises;

delivering, by the UE, using the PDCP layer entity of the target radio bearer that needs to be reconfigured, to an upper-layer entity of a PDCP layer, a data packet that meets a first predetermined condition, wherein the data packet that meets the first predetermined condition comprises a data packet that is temporarily not delivered to the upper-layer entity by the PDCP layer entity; and

delivering, by the UE, using the RLC layer entity of the target radio bearer that needs to be reconfigured, to the PDCP layer entity, a data packet that meets a second predetermined condition, wherein the data packet that meets the second predetermined condition comprises a data packet that is temporarily not delivered to the PDCP layer entity by the RLC layer entity and that may be reassembled by the RLC layer entity.

2. The radio bearer reconfiguration method according to claim 1, wherein:

the radio bearer reconfiguration indication further comprises a full configuration identifier; and

releasing, by the UE, the target radio bearer that needs to be reconfigured comprises;

releasing, by the UE, the target radio bearer that needs to be reconfigured according to the full configuration identifier.

3. The radio bearer reconfiguration method according to claim 1, wherein releasing, by the UE, the target radio bearer that needs to be reconfigured comprises:

clearing, by the UE from an original configuration parameter corresponding to the target radio bearer that needs to be reconfigured by releasing a protocol entity of the target radio bearer that needs to be reconfigured, an original configuration parameter corresponding to the target configuration parameter;

wherein the protocol entity comprises at least one of a packet data convergence protocol (PDCP) layer entity and a radio link control (RLC) layer entity.

4. The radio bearer reconfiguration method according to claim 3, wherein clearing, by the UE from the original configuration parameter corresponding to the target radio bearer that needs to be reconfigured by releasing the protocol entity of the target radio bearer that needs to be reconfigured, the original configuration parameter corresponding to the target configuration parameter comprises:

when the target configuration parameter comprises configuration parameters of all items corresponding to the target radio bearer that needs to be reconfigured, clearing, by the UE, original configuration parameters of all the items corresponding to the target radio bearer that needs to be reconfigured.

5. The radio bearer reconfiguration method according to claim 3, wherein clearing, by the UE from the original configuration parameter corresponding to the target radio bearer that needs to be reconfigured by releasing the protocol entity of the target radio bearer that needs to be reconfigured, the original configuration parameter corresponding to the target configuration parameter comprises:

when the target configuration parameter comprises configuration parameters of some items corresponding to the target radio bearer that needs to be reconfigured, clearing, by the UE from the original configuration parameter corresponding to the target radio bearer that needs to be reconfigured, original configuration parameters of some items corresponding to the target configuration parameter, and reserving original configuration parameters of some other unchanged items.

6. The radio bearer reconfiguration method according to claim 1, wherein reestablishing, by the UE, the protocol entity of the target radio bearer that needs to be reconfigured, to process the data packet that is temporarily not completely processed comprises:

delivering, by the UE using the PDCP layer entity of the target radio bearer that needs to be reconfigured to an upper-layer entity of a PDCP layer, a data packet that meets a first predetermined condition, wherein the data packet that meets the first predetermined condition comprises a data packet that is temporarily not delivered to the upper-layer entity by the PDCP layer entity.

7. The radio bearer reconfiguration method according to claim 1, wherein reestablishing, by the UE, the protocol entity of the target radio bearer that needs to be reconfigured, to process the data packet that is temporarily not completely processed comprises:

delivering, by the UE using the RLC layer entity of the target radio bearer that needs to be reconfigured to the PDCP layer entity, a data packet that meets a second predetermined condition, wherein the data packet that meets the second predetermined condition comprises a data packet that is temporarily not delivered to the PDCP layer entity by the RLC layer entity and that may be reassembled by the RLC layer entity.

8. The radio bearer reconfiguration method according to claim 1, wherein reestablishing, by the UE, the protocol entity of the target radio bearer that needs to be reconfigured comprises:

reestablishing, by the UE, the protocol entity of the target radio bearer that needs to be reconfigured according to a full configuration identifier in the radio bearer reconfiguration indication.

9. The radio bearer reconfiguration method according to claim 1, wherein:

the radio bearer reconfiguration indication further comprises a reestablishment identifier; and

reestablishing, by the UE, the protocol entity of the target radio bearer that needs to be reconfigured comprises;

reestablishing, by the UE, the protocol entity of the target radio bearer that needs to be reconfigured according to the reestablishment identifier.

10. The radio bearer reconfiguration method according to claim 1, wherein transmitting, by the UE, at least one of signaling and data on the corresponding target radio bearer according to the target configuration parameter comprises:

when the target configuration parameter comprises configuration parameters of all items corresponding to the target radio bearer that needs to be reconfigured, transmitting, by the UE, at least one of signaling and data on the corresponding target radio bearer according to the target configuration parameter.

11. The radio bearer reconfiguration method according to claim 1, wherein transmitting, by the UE, at least one of signaling and data on the corresponding target radio bearer according to the target configuration parameter comprises:

when the target configuration parameter comprises configuration parameters of some items corresponding to the target radio bearer that needs to be reconfigured, transmitting, by the UE, at least one of signaling and data on the corresponding target radio bearer according to the target configuration parameter and original configuration parameters of some other unchanged items corresponding to the target radio bearer that needs to be reconfigured.

12. The radio bearer reconfiguration method according to claim 1, wherein the radio bearer reconfiguration indication comprises a radio resource control (RRC) connection reconfiguration message.

13. The radio bearer reconfiguration method according to claim 1, wherein the radio bearer reconfiguration indication comprises a control protocol data unit (PDU).

14. User equipment (UE), wherein the UE comprises:

a processor; and

memory coupled to the processor, the memory comprising instructions that, when executed by the processor, cause the UE to;

receive a radio bearer reconfiguration indication sent by a base station, wherein the radio bearer reconfiguration indication comprises a radio bearer identifier and a target configuration parameter, the radio bearer identifier indicates a target radio bearer that needs to be reconfigured, the target configuration parameter corresponds to a configuration item of the target radio bearer that needs to be reconfigured, and the radio bearer reconfiguration indication does not include a second bearer identifier that indicates a second radio bearer currently established between the UE and the base station that does not need to be reconfigured;

release the target radio bearer that needs to be reconfigured without releasing the second radio bearer; and

transmit at least one of signaling and data on a corresponding target radio bearer according to the target configuration parameter,

wherein the memory further comprises instructions that, when executed by the processor, cause the UE to;

before releasing the target radio bearer that needs to be reconfigured, reestablish a protocol entity of the target radio bearer that needs to be reconfigured, to process a data packet that is temporarily not completely processed, wherein the protocol entity comprises at least one of a packet data convergence protocol (PDCP) layer entity and a radio link control (RLC) entity; and

deliver, using the PDCP layer entity of the target radio bearer that needs to be reconfigured to an upper-layer entity of a PDCP layer, a data packet that meets a first predetermined condition, wherein the data packet that meets the first predetermined condition comprises a data packet that is temporarily not delivered to the upper-layer entity by the PDCP layer entity; and

deliver, using the RLC layer entity of the target radio bearer that needs to be reconfigured to the PDCP layer entity, a data packet that meets a second predetermined condition, wherein the data packet that meets the second predetermined condition comprises a data packet that is temporarily not delivered to the PDCP layer entity by the RLC layer entity and that may be reassembled by the RLC layer entity.

15. The UE according to claim 14, wherein:

the radio bearer reconfiguration indication further comprises a full configuration identifier; and

the memory further comprises instructions that, when executed by the processor, cause the UE to release the target radio bearer that needs to be reconfigured according to the full configuration identifier.

16. The UE according to claim 14, wherein the memory further comprises instructions that, when executed by the processor, cause the UE to:

clear, from an original configuration parameter corresponding to the target radio bearer that needs to be reconfigured by releasing a protocol entity of the target radio bearer that needs to be reconfigured, an original configuration parameter corresponding to the target configuration parameter;

wherein the protocol entity comprises at least one of a packet data convergence protocol (PDCP) layer entity and a radio link control (RLC) layer entity.

17. The UE according to claim 16, wherein the memory further comprises instructions that, when executed by the processor, cause the UE to:

when the target configuration parameter comprises configuration parameters of all items corresponding to the target radio bearer that needs to be reconfigured, clear, by the UE, original configuration parameters of all the items corresponding to the target radio bearer that needs to be reconfigured.

18. The UE according to claim 16, wherein the memory further comprises instructions that, when executed by the processor, cause the UE to:

when the target configuration parameter comprises configuration parameters of some items corresponding to the target radio bearer that needs to be reconfigured, clear, by the UE from the original configuration parameter corresponding to the target radio bearer that needs to be reconfigured, original configuration parameters of some items corresponding to the target configuration parameter, and reserve original configuration parameters of some other unchanged items.

19. The UE according to claim 14, wherein the memory further comprises instructions that, when executed by the processor, cause the UE to:

deliver, using the PDCP layer entity of the target radio bearer that needs to be reconfigured to an upper-layer entity of a PDCP layer, a data packet that meets a first predetermined condition, wherein the data packet that meets the first predetermined condition comprises a data packet that is temporarily not delivered to the upper-layer entity by the PDCP layer entity.

20. The UE according to claim 14, wherein the memory further comprises instructions that, when executed by the processor, cause the UE to:

deliver, using the RLC layer entity of the target radio bearer that needs to be reconfigured to the PDCP layer entity, a data packet that meets a second predetermined condition, wherein the data packet that meets the second predetermined condition comprises a data packet that is temporarily not delivered to the PDCP layer entity by the RLC layer entity and that may be reassembled by the RLC layer entity.

21. The UE according to claim 14, wherein the memory further comprises instructions that, when executed by the processor, cause the UE to:

reestablish the protocol entity of the target radio bearer that needs to be reconfigured according to a full configuration identifier in the radio bearer reconfiguration indication.

22. The UE according to claim 14, wherein:

the radio bearer reconfiguration indication further comprises a reestablishment identifier; and

the memory further comprises instructions that, when executed by the processor, cause the UE to;

reestablish the protocol entity of the target radio bearer that needs to be reconfigured according to the reestablishment identifier.

23. The UE according to claim 14, wherein the memory further comprises instructions that, when executed by the processor, cause the UE to:

when the target configuration parameter comprises configuration parameters of all items corresponding to the target radio bearer that needs to be reconfigured, transmit, at least one of signaling and or data on the corresponding target radio bearer according to the target configuration parameter.

24. The UE according to claim 14, wherein the memory further comprises instructions that, when executed by the processor, cause the UE to:

when the target configuration parameter comprises configuration parameters of some items corresponding to the target radio bearer that needs to be reconfigured, transmit, by the UE, at least one of signaling and data on the corresponding target radio bearer according to the target configuration parameter and original configuration parameters of some other unchanged items corresponding to the target radio bearer that needs to be reconfigured.

25. The UE according to claim 14, wherein the radio bearer reconfiguration indication is a radio resource control (RRC) connection reconfiguration message.

26. The UE according to claim 14, wherein the radio bearer reconfiguration indication is a control protocol data unit (PDU).