A data transmission method, device and system based on harq

A data transmission method and hybrid automatic retransmission technology, applied in the field of HARQ-based data transmission methods, devices and systems, can solve complex problems, reduce data transmission speed, increase data transmission time, etc., to reduce operational complexity and improve Data transfer speed, effect of reducing data transfer time

Active Publication Date: 2019-07-05
BEIJING UNIV OF POSTS & TELECOMM
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the above method, the process of performing inverse sender operations on the special subframe and the target normal subframe is relatively complicated, which will increase the data transmission time and reduce the data transmission speed

Method used

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  • A data transmission method, device and system based on harq
  • A data transmission method, device and system based on harq
  • A data transmission method, device and system based on harq

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Embodiment Construction

[0054] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0055] In order to solve the problems in the prior art, embodiments of the present invention provide a HARQ-based data transmission method, device and system. A HARQ-based data transmission method provided by an embodiment of the present invention is firstly introduced below.

[0056] It should be noted that the embodiment of the present invention is preferably applied to a receiving end, and the receiving end referred to here is a device for receiving special...

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Abstract

The embodiment of the invention provides a data transmission method, device and system based on HARQ; the method is applied to a receive end, and comprises the following steps: receiving a special subframe and an object common subframe; carrying out channel estimation for the special subframe and the object common subframe, thus obtaining a first channel information value of the special subframe and a second channel information value of the object common subframe; carrying out reverse sending end operation treatment for the special subframe according to the first channel information value; verifying the processed special subframe; if the verification result is wrong, sending feedback NACK information to the sending end; if the special subframe verification result is correct, carrying out reverse sending end operation treatment for the object common subframe according to the second channel information value; verifying the processed object common subframe; sending feedback NACK information to the sending end if the object common subframe verification result is wrong, otherwise, sending feedback ACK information to the sending end. The method, device and system can improve data transmission speed.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a HARQ-based data transmission method, device and system. Background technique [0002] Currently, mobile users expect operators to provide wireless networks with a wireless access speed of no less than 1 Mbps anytime and anywhere, and with a system transmission delay of less than 20ms to achieve seamless coverage of the entire network in a high-speed environment. This not only puts higher requirements on the downlink rate and spectrum efficiency of the wireless network system, but also challenges the uplink peak rate and spectrum efficiency of the existing wireless network system. In order to solve the above technical problems, 3GPP (3rd Generation Partnership Project, 3rd Generation Partnership Project) LTE (Long Term Evolution, long-term evolution) came into being, and TD-LTE (Time Division Long Term Evolution, time-sharing long-term Evolution) system needs to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/18
CPCH04L1/1887H04L1/1896
Inventor 龙航吴冰李玉立
Owner BEIJING UNIV OF POSTS & TELECOMM
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