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Data transmission method and device

A data transmission and data technology, applied in the field of data transmission, can solve the problems of waste of reference signal resources, increase the burden of base stations, etc., achieve the effect of reducing reception complexity and improving resource utilization

Inactive Publication Date: 2018-10-09
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Currently, when a terminal device sends data in a contention-based manner, the network device needs to distinguish the number of current data transmissions according to different reference signals, which increases the burden on the base station, and the communication system needs to provide data for the terminal device. More pilot resources are allocated for transmission. When the data does not need to be retransmitted, the reference signal resources used for retransmission are wasted

Method used

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  • Data transmission method and device
  • Data transmission method and device

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Embodiment Construction

[0070] The technical solution in this application will be described below with reference to the accompanying drawings.

[0071] figure 1 A communication system 100 to which the present application is applicable is shown. The communication system 100 includes a network device 110 and a terminal device 120. The network device 110 and the terminal device 120 communicate through a wireless network. When the terminal device 120 sends data, the wireless communication module can encode the information for transmission. Specifically, The wireless communication module may obtain a certain number of data bits to be sent to the network device 110 through the channel, such as data bits generated by the processing module, received from other devices or saved in the storage module. These data bits may be contained in one or more transport blocks (also referred to as information blocks), which may be segmented to produce multiple encoded blocks.

[0072] In this application, a terminal dev...

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Abstract

The invention discloses a data transmission method and device. The method comprises that first terminal equipment determines a retransmission time unit of a first information block, the first terminalequipment sends first data to network equipment in the retransmission time unit, and the first data comprises a first symbol sequence obtained by processing the first information block; and the retransmission time unit is determined by the first terminal equipment according to sending sequence information of the first terminal equipment, the sending sequence information is determined by the firstterminal equipment on the basis of position of the first terminal equipment in a first set, and the position of the first terminal equipment in the first set is determined by the first terminal equipment according to a preset algorithm. When the first terminal equipment needs data retransmission, the network equipment can determine the retransmission time of the first terminal equipment, it is not required to reserve a reference signal resource for retransmission of the first terminal equipment, and the utilization rate of resources is improved.

Description

technical field [0001] The present application relates to the communication field, and more specifically, to a data transmission method and device. Background technique [0002] In the prior art, a grant-free solution is a solution in which a terminal device can send uplink data to a network device without requiring a scheduling authorization instruction from the network device. Specifically, the terminal device may send the data and the identifier of the terminal device to the network device, and the network device obtains the data and the identifier of the terminal device after correctly detecting the signal sent by the terminal device. [0003] In the scheduling-free solution, the terminal device can send data to the network device based on scheduling, or send data to the network device based on contention, wherein, sending data based on scheduling refers to the resource dynamically indicated by the terminal device through the network device The contention-based method o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L5/00H04L1/18
CPCH04L1/1867H04L5/0058H04L5/0078
Inventor 夏金环
Owner HUAWEI TECH CO LTD
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