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A data transmission method and device

A data transmission method and data packet technology are applied in the field of data transmission methods and devices, and can solve problems such as affecting UE data rate, data failure, and deteriorating UE user experience.

Active Publication Date: 2020-12-11
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the prior art, PDCP cannot effectively retransmit data. When the UE splits data between two or more nodes, once the data transmitted on one node has been arranged, there is currently no way to change the data. link transmission
When the wireless link of the node deteriorates due to high-frequency intermittent disconnection, etc., the data arranged on the node will frequently fail, and affect the data rate of the entire UE, thereby deteriorating the user experience of the UE

Method used

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  • A data transmission method and device
  • A data transmission method and device
  • A data transmission method and device

Examples

Experimental program
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Effect test

Embodiment 1

[0195] This embodiment provides a data transmission method, which is applied to the first node, such as image 3 As shown, the method includes:

[0196] Step 101: the first node distributes the data packets to different links for transmission;

[0197] Step 102: the first node receives an indication message from the second node;

[0198] Step 103: When the indication message indicates that there is a lost data packet, the first node retransmits the lost data packet through a second link, and the second link is the same as the first node that lost the initial transmission. A link different from the first link of the data packet; when the indication message indicates that the data packet has been successfully transmitted, the first node gives up transmitting the successfully transmitted data packet through other links.

[0199] In this embodiment, in the scenario of multiple links, if the same data packet has been successfully transmitted through other links, the successful tr...

Embodiment 2

[0246] This embodiment provides a data transmission method, which is applied to the second node, such as Figure 4 As shown, the method includes:

[0247] Step 201: After the first node distributes the data packets to different links for transmission, the second node sends an indication message to the first node, the indication message indicates that there is a lost data packet or indicates that the transmission has been successful data packets.

[0248] In this embodiment, in the scenario of multiple links, if the same data packet has been successfully transmitted through other links, the successful transmission information will be notified to the link that has not yet succeeded, so as to update the state of the link; When the data transmission of one of the links cannot continue, it can indicate that there is a lost data packet, so that the corresponding data can be retransmitted, and at the same time, the problematic link can be suspended or reset. Through the technical s...

Embodiment 3

[0290] This embodiment provides a data transmission device, which is applied to the first node, such as Figure 5 As shown, the device includes:

[0291] Distribution module 31, for distributing data packets to different links for transmission;

[0292] A receiving module 32, configured to receive an indication message from the second node;

[0293] The transmission processing module 33 is configured to retransmit the lost data packet through the second link when the indication message indicates that there is a lost data packet, and the second link is the initial transmission of the lost data with the first node A link different from the first link of the packet; when the indication message indicates that the data packet has been successfully transmitted, the transmission of the successfully transmitted data packet through other links is abandoned.

[0294] In this embodiment, in the scenario of multiple links, if the same data packet has been successfully transmitted throug...

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Abstract

The invention provides a data transmission method and device, belonging to the technical field of wireless communication. Wherein, the method includes: the first node distributes data packets to different links for transmission; the first node receives an indication message from the second node; when the indication message indicates that there is a lost data packet, The first node retransmits the lost data packet over a second link, the second link being a link different from the first link on which the first node initially transmitted the lost data packet; When the message indicates that the data packet has been successfully transmitted, the first node gives up transmitting the successfully transmitted data packet through other links. Through the technical solution of the present invention, PDCP can effectively retransmit data, ensure the data rate of UE, and improve user experience of UE.

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] In the future development of the mobile communication system, it will support larger transmission bandwidth and higher transmission rate, the bandwidth will reach GHz, and the transmission rate will reach 10Gbps. In order to cope with such a scenario, dense deployment of a large number of high-frequency small cells will be a very common deployment scenario. In order to enable better collaboration and efficient work between small stations, adopting dual or multi-connection methods, or introducing centralized control nodes, is a better solution for both system efficiency and user experience. [0003] In existing mobile communication systems, such as figure 1 In the user plane protocol stack shown, the data transmission between UE (user terminal) and eNB (evolved base station) usually passe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/16H04L1/18H04W28/02H04W72/12
CPCH04L1/1607H04L1/1806H04W28/0231H04W72/1221H04W72/542
Inventor 刘佳敏谌丽
Owner DATANG MOBILE COMM EQUIP CO LTD
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