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A data transmission method, device and equipment

A data transmission method and technology for data transmission, applied in the field of data transmission methods, devices and equipment, can solve problems such as large resource consumption, achieve the effects of avoiding resource waste and achieving reliability

Active Publication Date: 2022-04-15
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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  • A data transmission method, device and equipment
  • A data transmission method, device and equipment
  • A data transmission method, device and equipment

Examples

Experimental program
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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 present invention discloses a data transmission method, device and equipment, wherein the method includes: a first node performs RLC repeated transmission on a radio link layer control protocol data unit RLC PDU, and the RLC repeated transmission includes: performing RLC PDU Duplication is performed to obtain at least two RLC PDUs and delivered to the lower layer; the at least two RLC PDUs are mapped to different medium access control layer protocol data units MAC PDUs and then sent to the second node. The embodiment of the present invention can realize the reliability control of each hop transmission, so as to realize the reliability of data transmission and avoid resource waste caused by end-to-end PDCP repeated transmission.

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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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/18
CPCH04L1/18
Inventor 谌丽
Owner DATANG MOBILE COMM EQUIP CO LTD
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