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Data transmission method, data transmission device and communication system

A data transmission method and technology of a communication system are applied in the fields of data transmission devices, communication systems, and data transmission methods to achieve the effects of avoiding resource waste, realizing matching channels, and avoiding the overhead of decoding and feedback.

Active Publication Date: 2021-10-26
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, HARQ in the current LTE system still has a lot of room for improving spectral efficiency

Method used

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  • Data transmission method, data transmission device and communication system
  • Data transmission method, data transmission device and communication system
  • Data transmission method, data transmission device and communication system

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Embodiment Construction

[0055] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention.

[0056] The process of data transmission using the HARQ transmission mechanism is as follows: Figure 1A As shown, the information bit sequence is channel coded to generate a coded bit sequence, and the coded bit sequence is stored in the HARQ buffer; during the initial transmission or retransmission, the coded bit sequence is taken from the HARQ buffer according to the redundancy version (Redundancy Version, RV). Rate matching to obtain a physical channel bit sequence; modulate the physical channel bit sequence to generate a physical channel symbol sequence; perform resource mapping on the physical channel symbol sequence, and map it to the corresponding time-frequency resource for transmission.

[0057] In order to solve the problem of low spectrum efficiency of data transmiss...

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Abstract

The invention relates to the technical field of wireless communication, and provides a data transmission method. The method discloses that the sending device initially transmits the first data through the first process on the m time-frequency resources, receives confirmation information of the first data, and according to the confirmation information, n consecutive time-frequency data in the m time-frequency resources The first data is retransmitted through the first process on the resource, and the second data is initially transmitted or retransmitted through at least one second process on the m-n time-frequency resources. Among them, the m time-frequency resources are composed of k consecutive minimum scheduling time units in the time domain, and the n time-frequency resources are composed of q consecutive minimum scheduling time units in the time domain, and m is greater than or equal to 2 Positive integer, k, q and n are positive integers and m is greater than n. Through the solution provided by this embodiment, resource fragmentation can be reduced to improve spectrum efficiency of data transmission, and the data transmission method is compatible with various systems.

Description

[0001] This application requires a PCT patent application submitted to the China Patent Office on December 27, 2016 with the application number PCT / CN2016 / 112436 and the title of the invention as "data transmission method, data transmission device and communication system", which requires August 2016 The priority of the PCT patent application with the application number PCT / CN2016 / 094234 and the title of the invention "data transmission method, data transmission device and communication system" was submitted to the China Patent Office on the 09th, the entire content of which is incorporated by reference in this application. technical field [0002] The invention relates to the technical field of wireless communication, in particular to a data transmission method, a data transmission device and a communication system. Background technique [0003] Uplink data and downlink data in a long term evolution (long term evolution, LTE) system are respectively carried by a physical upl...

Claims

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Application Information

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IPC IPC(8): H04L1/18
CPCH04L1/18H04W28/04
Inventor 胡远洲董朋朋彭金磷王宗杰
Owner HUAWEI TECH CO LTD