Data transmission method and device

A data transmission method and data transmission technology are applied in the field of data transmission methods and devices, and can solve the problems of time extension, long interruption time of data transmission, etc.

Active Publication Date: 2019-12-03
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present application provides a data transmission method and device, which are used to solve the problem that the uplink data transmission of the DRB is interrupted for too long and the time delay is long caused by the split bearer switching in the dual-connection network.

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  • Data transmission method and device

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Embodiment Construction

[0039] The present application provides a data transmission method and device, which are used to reduce the uplink data transmission delay of the DRB when a terminal configured with dual connectivity performs the above data transmission on the DRB. Wherein, the method and the device are based on the same inventive concept. Since the method and the device have similar problem-solving principles, the implementation of the device and the method can be referred to each other, and the repetition will not be repeated.

[0040] Part of the terms used in the embodiments of the present application are explained below to facilitate the understanding of those skilled in the art.

[0041] 1) Terminal, also known as user equipment (UE), mobile station (MS), mobile terminal (MT), etc., is a device that provides voice and / or data connectivity to users device of. For example, the terminal device includes a handheld device with a wireless connection function, a vehicle-mounted device, and the...

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Abstract

The invention relates to the technical field of communication, and discloses a data transmission method and a device, which are used for reducing uplink data transmission delay of a DRB. The method comprises the following steps of: the terminal performs uplink data transmission on the DRB, wherein the DRB is a first bearing type, a PDCP entity of the first bearing type is configured to be associated with an RLC entity corresponding to a first cell group and an RLC entity corresponding to a second cell group, the first cell group belongs to a first network device, and the second cell group belongs to a second network device; and when determining that the accessed second cell group is unavailable, the terminal converts the type of the DRB from the first bearer type to a second bearer type, and the PDCP entity of the second bearer type is only associated with the RLC entity corresponding to the first cell group.

Description

technical field [0001] The embodiments of the present application relate to the field of communication technologies, and in particular, to a data transmission method and device. Background technique [0002] With the continuous development and improvement of 5G new radio (new radio, NR), NR has gradually moved towards commercial use. In order to ensure the stability of data transmission, in the initial stage of NR deployment, the networking mode of dual connectivity (DC) will be It is the networking mode chosen by most operators. The dual-connection networking modes that exist in 5G applications include: (1) ED-DC networking mode, that is, the terminal is connected to the 4G LTE base station and the 5G NR base station at the same time. In the EN-DC networking mode, the NR base station It is called En-gNB, and the LTE base station is called eNB. Among them, the LTE base station is the main base station / node, also called MeNB in ​​EN-DC, and the NR base station is the seconda...

Claims

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Application Information

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IPC IPC(8): H04W76/19H04W76/16H04W76/34
CPCH04W76/19H04W76/16H04W76/34
Inventor徐海博袁锴崔立伟金辉方平庄宏成
OwnerHUAWEI TECH CO LTD