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
First Claim
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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, andwherein 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.

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