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A data transmission method, device and system

A data transmission method and data technology, applied in the field of communication, can solve problems such as data transmission delay

Active Publication Date: 2020-06-26
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Embodiments of the present invention provide a data transmission method, device and system, which can solve the problem of data transmission delay caused by equipment needing to re-seize an unlicensed carrier to transmit HARQ retransmission packets in the prior art

Method used

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  • A data transmission method, device and system
  • A data transmission method, device and system
  • A data transmission method, device and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0129] The embodiment of the present invention provides a data transmission method, such as figure 1 Shown is a schematic flow diagram of the data transmission method, including:

[0130] S101. The first device transmits data to the second device on the first carrier.

[0131] Among them, the first carrier is an unlicensed carrier.

[0132] In the LAA-LTE system, the first device uses the channel resource through the principle of LBT (listen before talk), where LBT is a CSMA (carrier sense multiple access) technology, that is, the first A device first detects that the channel resources of the unlicensed spectrum are idle, and then uses the channel resources of the unlicensed spectrum to transmit data, and the carrier on the unlicensed spectrum is an unlicensed carrier. LBT includes two working modes, namely LBE (load based equipment, load based) working mode and FBE (frame based equipment, frame based) working mode. After successfully competing for channel resources using LBE or FB...

Embodiment 2

[0165] The embodiment of the present invention provides a data transmission method, such as figure 2 Shown is a schematic flow diagram of the data transmission method, including:

[0166] S201. The second device receives data transmitted by the first device on the first carrier.

[0167] Among them, the first carrier is an unlicensed carrier.

[0168] S202. The second device obtains first configuration information.

[0169] The first configuration information indicates the transmission sequence or position of the retransmission packet on the second carrier. The second device acquiring the first configuration information specifically includes: the second device determines the first configuration information and sends the first configuration information to the first device; or the second device receives the first configuration information sent by the first device; or The device receives the first configuration information sent by the third-party device.

[0170] S201 and S202 are not r...

Embodiment 3

[0185] The embodiment of the present invention provides a first device 10, such as image 3 Shown is a schematic structural diagram of the first device 10, including:

[0186] The sending module 101 is configured to transmit data to the second device on the first carrier.

[0187] The obtaining module 102 is used to obtain first configuration information.

[0188] The retransmission module 103 is configured to transmit the retransmission packet of the data to the second device on the second carrier according to the first configuration information, and the first configuration information indicates the transmission order or position of the retransmission packet on the second carrier.

[0189] The first configuration information is the order of the carrier numbers of the first carrier to which the retransmission packet belongs, and the retransmission module 103 is specifically configured to follow the order of the first carrier on the second carrier according to the first configuration in...

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Abstract

The present invention provides a data transmission method, device and system, which can solve the problem of data transmission delay caused by equipment needing to re-seize an unauthorized carrier to transmit a retransmission packet in the prior art. The data transmission method includes: a first device transmits data to a second device on a first carrier; the first device obtains first configuration information; and the first device transmits the data to the second device on a second carrier according to the first configuration information. For retransmission packets of data, the first configuration information indicates the sequence or position of the retransmission packets transmitted on the second carrier.

Description

Technical field [0001] The present invention relates to the field of communication, and in particular to a data transmission method, device and system. Background technique [0002] In a wireless communication network, each device needs to use frequency resources for data transmission, and frequency resources are also called frequency spectrum. Spectrum can be divided into licensed spectrum and unlicensed spectrum. Licensed spectrum is a frequency resource exclusive to some operators, and unlicensed spectrum is a common frequency resource in wireless communication networks. The carrier on the licensed spectrum is called the licensed carrier, and the carrier on the unlicensed spectrum is called the unlicensed carrier. In a wireless communication network, each device can transmit data through competing unlicensed carriers. [0003] To improve the reliability of channel transmission, HARQ (Hybrid Automatic Repeat Request) is widely used as a main data retransmission method. In the...

Claims

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Application Information

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IPC IPC(8): H04W16/14
CPCH04L1/1671H04L1/1887H04L1/1893H04L5/0044H04L5/0096H04W16/14
Inventor 王达王键
Owner HUAWEI TECH CO LTD
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