Data transmission method and device

A data transmission method and technology for grouping data, applied in the field of data transmission methods and devices, can solve the problems of data transmission interruption, short interruption of data transmission, affecting throughput and user experience, etc.

Active Publication Date: 2018-07-31
高级标准通信有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

However, the handover methods in the related art more or less will result in a brief interruption of data transmission during the handover process
In 5G, due to the dense deployment of the network and the use of high-frequency frequency bands, the frequency of UE changing cells is many times higher than that of the existing network. If the relevant handover technology is continued to realize this process, data transmission interruptions will occur frequently, affecting Throughput and User Experience

Method used

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Embodiment Construction

[0086] In order to understand the characteristics and technical contents of the embodiments of the present invention in more detail, the implementation of the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. The attached drawings are only for reference and description, and are not intended to limit the embodiments of the present invention.

[0087] The following are the Chinese and English interpretations of the technical terms involved in the embodiments of the present invention:

[0088]

[0089]

[0090] The technical solutions of the embodiments of the present invention are applied but not limited to 5G scenarios. In 5G scenarios, the functions of the main functional entities are as follows:

[0091] The UE mainly accesses the 5G network through the wireless air interface and obtains services. The terminal exchanges information with the base station through the air interface, and through the non-acce...

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Abstract

The invention discloses a data transmission method and device. The data transmission method comprises the following steps: a RB is established on a second cell after the RB is established in a first cell, wherein a PDCP entity on the first cell of the RB is a first PDCP entity, and the PDCP entity on the second cell of the RB is a second PDCP entity; before deleting the RB on the first cell, the first PDCP entity receives a PDCP SDU from an upper layer or the core network, and assigns the SN and HFN to the PDCP SDU; the first PDCP entity sends the PDCP SDU and the SN and HFN assigned to the PDCP SDU to the second PDCP entity; the first PDCP entity processes the PDCP SDU according to the SN and HFN to generate a PDCP PDU; and the second PDCP entity processes the PDCP SDU according to the SNand HFN sent by the first PDCP entity to generate the PDCP PDU.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a data transmission method and device. Background technique [0002] After decades of development, cellular mobile communication technology has entered the fourth generation (4G, 4 th Generation) mobile communication era, and in order to meet the foreseeable higher, faster and newer communication needs in the future, the industry has begun to develop the future fifth generation (5G, 5 th Generation) research on mobile communication technology. At present, the goal of 5G technology generally recognized by the industry is: by 2020, to achieve a 1000-fold increase in mobile data traffic per region, a 10- to 100-fold increase in throughput per user equipment (UE, User Equipment), and a 10- to 100-fold increase in the number of connected devices. 10x increase in battery life for low-power devices, and 5x reduction in end-to-end latency. [0003] The two mos...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W12/02H04W12/10H04W36/00H04W36/18H04W12/106
CPCH04W12/02H04W12/10H04W36/0033H04W36/0038H04W36/18H04W36/00H04W12/037H04W12/033H04W12/106Y02D30/70H04W12/108
Inventor 施小娟黄河
Owner 高级标准通信有限责任公司
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