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Data transmission method and device

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

Active Publication Date: 2018-09-07
HUAWEI TECH CO LTD
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Problems solved by technology

[0020] This application provides a data transmission method and device to solve the problem of low channel utilization in communication systems using GBT and GFT transmission methods in the prior art

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Embodiment Construction

[0108] The embodiments of the present application will be further described in detail below in conjunction with the accompanying drawings.

[0109] The embodiments of the present application provide a data transmission method and device, which are used to solve the problem of low channel utilization in communication systems using two transmission modes, GBT and GFT, in the prior art. Wherein, the method and the device described in this application are based on the same inventive concept, and since the method and the device have similar problem-solving principles, the implementation of the device and the method can be referred to each other, and the repetition will not be repeated.

[0110] In this embodiment of the application, when the access network device fails to detect the data sent by the successful terminal device based on the GFT method, it instructs the terminal device to retransmit the sent data, and according to the first channel used by the terminal device for this ...

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Abstract

The application provides a data transmission method and device for solving the problem that a communication system adopting two transmission ways of GBT and GFT is low in channel utilization rate in the prior art. The method comprises the following steps: access network equipment can indicate terminal equipment to perform retransmission through a second channel resource when not detecting the datasent by the terminal equipment based on the GFT way; the terminal equipment can determine the second channel resource used in retransmission according to the first channel resource used as this timeafter acquiring a retransmission indication, and performs the retransmission through the second channel resource; the access network equipment obtains the data sent by the terminal equipment accordingto a signal received on the second channel resource. Through the method provided by the application, the utilization efficiency of the channel resource is improved without adding extra channel resource to transmit the check data packet in the premise of guaranteeing the data transmission efficiency of the terminal equipment.

Description

technical field [0001] The present application relates to the technical field of communications, and in particular to a data transmission method and device. Background technique [0002] At present, the terminal device can send uplink data to the access network device in two ways: grant-base transmission (Grant-Base Transmission, GBT) and grant-free transmission (Grant-Free Transmission, GFT). [0003] Specifically, the process of sending uplink data by a terminal device adopting the GBT mode (also called GB_terminal device) includes the following steps: [0004] The GB_terminal device sends a scheduling request (Schedule Req terminal device st, SR) to the access network device; [0005] After the access network device successfully detects the SR, it schedules channel resources for the GB_terminal device, and feeds back a scheduling grant (Schedule Grant) including a scheduling result to the GB_terminal device; [0006] The GB_terminal device sends the uplink data to be se...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/18H04L1/16H04W52/54H04W72/04
CPCH04L1/1607H04L1/1829H04W52/54H04W72/0473H04W72/23H04L1/16H04L1/18H04W72/04
Inventor 王雪松武雨春
Owner HUAWEI TECH CO LTD
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