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A downlink data channel transmission method, device and system

A technology of channel transmission and downlink data, applied in the field of communication, can solve the problem of high overhead of control channel, etc., and achieve the effect of reducing overhead and reducing the need for instructions

Active Publication Date: 2019-09-13
CHINA ACADEMY OF INFORMATION & COMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of this, the present application provides a downlink data channel transmission method, device and system to solve the problem of high control channel overhead

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

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Embodiment Construction

[0024] In order to make the object, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below with reference to the accompanying drawings and examples.

[0025] The embodiment of the present application provides a downlink data channel transmission method. The base station determines the location of the data signal transmission for each terminal in advance according to the stored position numbering formula for each terminal, effectively reducing the need for indication of the control channel, thereby reducing control Channel overhead.

[0026] The process of implementing downlink data channel transmission in the embodiment of the present application will be described in detail below with reference to the accompanying drawings.

[0027] see figure 1 , figure 1 It is a schematic flowchart of a downlink data channel sending method in the embodiment of the present application. The specif...

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Abstract

The present application provides a downlink data channel sending method, device and system. The base station numbers the current service terminal sequentially from 1 as the terminal number of the terminal; according to the stored position number formula, as well as the terminal number of each terminal and the number of terminals currently serving the terminal, determine the position number of each terminal to send the data signal; according to the configured position The mapping relationship between the number and the RE number in each symbol, determine the RE number corresponding to the position number, and send a data signal to the corresponding terminal at the position corresponding to the RE number; and notify the corresponding terminal of the number of terminals and the number of terminals through a control signal The terminal number of the terminal enables the terminal to determine the position number according to the stored position number formula and the terminal number and the terminal number to obtain the data signal. The technical solution can reduce control channel overhead.

Description

technical field [0001] The present invention relates to the technical field of communication, in particular to a downlink data channel sending method, device and system. Background technique [0002] With the emergence of more wireless transmission-based technologies, the requirements for delay are becoming more and more stringent. It is difficult for the end-to-end delay of 10 ms supported by the traditional LTE system to meet the requirements of future networks. The air interface delay requirement of 1 ms gradually becomes the goal of the next network design. [0003] In the LTE system, basic data transmission is based on 1 ms subframe. To meet the air interface delay of 1 ms, the physical layer needs to support symbol-level data scheduling and transmission. [0004] In existing implementations, the control channel needs to indicate the specific locations of all data signals. Therefore, the control channel has a large overhead and cannot support symbol-level data schedul...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W72/12
CPCH04W72/23
Inventor 刘晓峰
Owner CHINA ACADEMY OF INFORMATION & COMM