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Data transmission method and device, and system

A technology for data transmission and transmission resources, applied in the direction of digital transmission system, transmission system, separation device of transmission path, etc., can solve problems such as inability to meet user service delay requirements

Pending Publication Date: 2020-12-15
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of this, the embodiments of the present invention provide a data transmission method, device and system to solve the problem that the transmission mechanism based on the TTI of 1 subframe or the transmission mechanism based on the TTI of 1 ms cannot meet the user service delay requirements

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0283] figure 1 It is a flow chart of the data transmission method provided in Embodiment 1. like figure 1 As shown, the method includes the following steps:

[0284] S111: the base station determines data transmission resources;

[0285] Wherein, the data transmission resource may be a short TTI data transmission resource, and the short TTI data transmission resource is less than the length of 1 subframe or less than 1 ms in the time domain.

[0286] S112: The base station sends DCI to the terminal device, where the DCI is used to indicate data transmission resources.

[0287] S113: The base station uses the data transmission resource to perform data transmission with the terminal device.

[0288] Wherein, optionally, before step S111, step S101 is also included:

[0289] When at least one of the following conditions is met, the base station determines that the data transmission resource used for data transmission with the terminal device is a short TTI data transmission...

Embodiment 2

[0430] Figure 4 It is a flow chart of the data transmission method provided in the second embodiment. Such as Figure 4 As shown, the method includes the following steps:

[0431] S411: The terminal device receives DCI sent by the base station, where the DCI is used to indicate data transmission resources;

[0432] S412: The terminal device determines the data transmission resource according to the DCI;

[0433] S413: The terminal device uses the data transmission resource to perform data transmission with the base station.

[0434] Wherein, the data transmission resource may be a short TTI data transmission resource, and the definition of the short TTI data transmission resource may refer to Embodiment 1.

[0435] Before step S411, the following steps may also be included:

[0436] S401: The terminal device receives high-level signaling or physical layer signaling sent by the base station, which instructs the terminal device: the data transmission resources used for data ...

Embodiment 3

[0538] Figure 5 A schematic structural diagram of a base station provided in Embodiment 3. Such as Figure 5 As shown, the base station includes:

[0539] The processing module 501 is configured to determine data transmission resources, where the data transmission resources are short TTI data transmission resources, and the short TTI data transmission resources are less than the length of 1 subframe or less than 1 ms in the time domain;

[0540] The transceiver module 502 is configured to send DCI to the terminal device, where the DCI is used to indicate data transmission resources; and use the data transmission resources to perform data transmission with the terminal device.

[0541] For the definition of short TTI data transmission resources, reference may be made to Embodiment 1.

[0542] Optionally, the data transmission resources include time domain transmission resources; the processing module 501 is specifically used for:

[0543] determining a time domain pattern,...

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Abstract

The invention discloses a data transmission method, a data transmission device and a system, which are used for solving the problem that a transmission mechanism based on a transmission time intervalTTI of one subframe or a transmission mechanism based on a TTI of 1 ms cannot meet the service delay requirement of a user. In a base station provided by the embodiment of the invention, a processingmodule is used for determining a data transmission resource, the data transmission resource is a short TTI data transmission resource, and the short TTI data transmission resource is less than the length of one subframe or less than 1 ms in a time domain; a transceiving module is used for sending DCI to terminal equipment, and the DCI is used for indicating the data transmission resource and performing data transmission with the terminal equipment by using the data transmission resource. Since the data transmission resource is the short TTI data transmission resource, the transmission time interval is shortened, and for one terminal equipment, the scheduling frequency in unit time can be increased, so that the data transmission delay can be effectively reduced.

Description

[0001] This application is a divisional application of a Chinese patent application with the application number 201580047223.6, the application date is August 12, 2015, and the invention title is "A Data Transmission Method, Device and System", the entire contents of which are incorporated in this application by reference middle. technical field [0002] The present invention relates to the technical field of wireless communication, in particular to a data transmission method, device and system. Background technique [0003] In a Long Term Evolution (Long Term Evolution, LTE) system, data transmission between a base station and a terminal device is performed based on base station scheduling. Before receiving downlink data or sending uplink data, the terminal device will receive the scheduling information sent by the base station. The scheduling information may include: physical resources allocated to the UE, such as: information on time-frequency resources, information on mo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/04H04W72/12H04L5/00
CPCH04L5/0091H04L5/0007H04L5/0044H04L5/0053H04W72/0446H04W72/23H04L2012/5631H04W72/04H04B1/713
Inventor 李超君马莎吴作敏
Owner HUAWEI TECH CO LTD