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Data transmission method, device and equipment

A data transmission method and data transmission technology, applied in the field of data transmission methods, devices and equipment, capable of solving problems such as large resource consumption

Active Publication Date: 2021-03-30
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] In the IAB architecture, if PDCP repeated transmission is used, each PDCP PDU must be repeatedly transmitted between each hop node, which consumes a lot of resources

Method used

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  • Data transmission method, device and equipment
  • Data transmission method, device and equipment
  • Data transmission method, device and equipment

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0263] Example 1: RLC repeated transmission of downlink data between IAB node#1 and IAB node#2

[0264] Please refer to Figure 8 , the example 1 includes the following steps:

[0265] Step A: IAB donor sends RRC signaling or F1-AP signaling to IAB node#2, and configures IAB node#2 to send data to IABnode#1 using RLC repeated transmission. The configuration content can be one or more of the following:

[0266] 1) All RLC entities between IAB node#2DU and IAB node#1MT perform RLC repeated transmission; or, specify a specific RLC entity between IAB node#2DU and IAB node#1MT to perform RLC repeated transmission;

[0267] 2) specify the UE ID, and perform RLC retransmission of the UE's data;

[0268] 3) The RB ID is specified, and the data of the RB is repeatedly transmitted by RLC.

[0269] In addition, the configuration signaling can also be sent to IAB node#1.

[0270] Step B (optional step): IAB donor or IAB node#1 sends a command to IAB node#2 to activate RLC repeat trans...

example 2

[0296] Example 2: RLC repeated transmission of uplink data between IAB node#1 and IAB node#2

[0297] Please refer to Figure 13 , the example 2 includes the following steps:

[0298] Step a: IAB donor sends RRC signaling or F1-AP signaling to IAB node#1, and configures IAB node#1 to send data to IABnode#2 using RLC repeated transmission. The configuration content can be one or more of the following. This configuration signaling is optionally sent to IAB node#2.

[0299] 1) All RLC entities between IAB node#1MT and IAB node#2DU perform RLC repeated transmission; or, specify a specific RLC entity between IAB node#1MT and IAB node#2DU to perform RLC repeated transmission;

[0300] 2) specify the UE ID, and perform RLC retransmission of the UE's data;

[0301] 3) Specify the RB ID, and perform RLC retransmission for the bearer time.

[0302] Step b (optional step): IAB donor or IAB node#2 sends a command to IAB node#1 to activate RLC repeated transmission, which can be BAP co...

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PUM

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Abstract

The invention discloses a data transmission method, device and equipment, and the method comprises the steps of: enabling a first node to carry out the RLC repeated transmission of a radio link layercontrol protocol data unit RLC PDU, wherein the RLC repeated transmission comprises the steps: carrying out the copying of the RLC PDU, obtaining at least two RLC PDUs, and submitting the at least twoRLC PDUs to a lower layer; and mapping the at least two RLC PDUs to different media access control layer protocol data units (MAC PDUs) and then sending the at least two RLC PDUs to a second node. According to the embodiment of the invention, the reliability control of each hop of transmission can be realized, so that the resource waste caused by end-to-end PDCP repeated transmission can be avoided while the data transmission reliability is realized.

Description

technical field [0001] The present invention relates to the technical field of communication, and in particular to a data transmission method, device and equipment. Background technique [0002] The 5G NR (New Radio) system mainly supports the following three types of services: [0003] 1) eMBB (enhanced Mobile Broadband, enhanced broadband communication); [0004] 2) mMTC (massive Machine Type Communications, a large number of machine type communications); [0005] 3) URLLC (Ultra-Reliable and Low Latency Communications, high reliability and low latency communication) [0006] For URLLC, due to its relatively high requirements on delay and reliability, a solution currently proposed by 3GPP is to introduce the PDCP (Packet Data Convergence Protocol, Packet Data Convergence Protocol) repeated transmission mechanism, that is, through multiple paths The same PDCP layer PDU (Protocol Data Unit, protocol data unit) is transmitted to improve transmission reliability and reduce ...

Claims

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Application Information

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IPC IPC(8): H04L1/18
CPCH04L1/18
Inventor 谌丽
Owner DATANG MOBILE COMM EQUIP CO LTD
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