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Data transmission method and device

A data transmission method and data transmission technology, which are applied in the field of data transmission methods and devices, can solve problems such as inability to meet low-latency services, and achieve the effects of meeting low-latency services, shortening transmission time intervals, and reducing data transmission delays

Active Publication Date: 2019-09-10
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In wireless communication systems, latency is one of the important factors affecting user experience, but the existing TTI transmission mechanism can no longer meet the needs of low-latency services

Method used

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  • Data transmission method and device

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Embodiment Construction

[0047] 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. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0048] Although the LTE system is used as an example in the foregoing background technology section, those skilled in the art should know that the present invention is not only applicable to the LTE system, but also applicable to other wireless communication systems, such as the Global System for Mobile Communications (Global System for Mobile Communication, GSM), mobile communication system (Universal MobileTelecommunications Systemc, UMTS), code division ...

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Abstract

The invention relates to the field of mobile communication, in particular to transmission resource determination technology in a wireless communication system. In a data transmission method, a networkdevice performs data transmission with a terminal device on a determined transmission resource by determining the transmission resource for transmitting the data. The time domain resource occupied bythe transmission resource in the time domain is one of N types of time domain resources, and the time length of any one of the N types of time domain resources is less than 1 millisecond. With the adoption of the method, the data transmission delay can be effectively reduced, so that the requirements of low-delay services can be met.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a data transmission method and device. Background technique [0002] In a Long Term Evolution (LTE) system, a subframe has a duration of 1 millisecond (ms), and each subframe is divided into two 0.5ms time slots (slots). In the LTE system, a transmission time interval (transmission time interval, TTI) is the length of one subframe. For example, the physical downlink shared channel (physical downlink shared channel, PDSCH) carrying downlink data, the physical uplink shared channel (physical uplink shared channel, PUSCH) carrying uplink data, and the bearer acknowledgment message (acknowledgment, ACK) / negative acknowledgment (negative acknowledgment, NACK) The physical uplink control channel (physical uplink control channel, PUCCH) is designed according to the TTI length of 1 subframe. [0003] In a wireless communication system, latency (latency) is one of the important fa...

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Application Information

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IPC IPC(8): H04L5/00H04W72/04
CPCH04L5/0044H04L5/0053H04L1/1812H04W16/10H04W72/569H04W72/0446
Inventor 李超君马莎
Owner HUAWEI TECH CO LTD