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Data transmission method, device and system

A data transmission method and data packet technology are applied in the fields of data transmission methods, devices and systems, and can solve the problems of reducing downlink throughput, weakening the gain of configuring flexible subframes, and failing to configure flexible subframes into downlink subframes.

Inactive Publication Date: 2016-03-23
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In this way, when a certain flexible subframe is configured as an uplink subframe at the current moment and performs uplink transmission, such as the transmission of PUSCH, due to the existence of this timing relationship, the flexible subframe needs to be in the next specified time slot Perform corresponding uplink transmission, such as performing corresponding uplink ACK / NACK feedback, etc. As a result, the flexible subframe cannot be configured as a downlink subframe within a certain period of time, which weakens the gain of configuring flexible subframes, thereby reducing downlink throughput

Method used

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

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Embodiment Construction

[0108] 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 creative efforts fall within the protection scope of the present invention.

[0109] In order to make the embodiment of the present invention more clear, the concepts involved in the LTE TDD system are briefly described as follows.

[0110] The LTE TDD system includes 7 kinds of uplink and downlink ratios, as shown in Table 1, where 'D' means downlink subframe, 'U' means uplink subframe; 'S' means special subframe, mainly used for downlink transmission. It can be seen from Table 1 that under various uplink and downlink ratios, time domain re...

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Abstract

The embodiment of the invention discloses a data transmission method, device and system, relating to the field of communication. To increase the downlink throughput, the technical scheme provided by the invention is as follows: the HARQ synchronous attribute of a data packet is configured; the HARQ synchronous attribute includes a synchronous HARQ or an asynchronous HARQ; the data packet is a transmission packet born by an uplink shared channel; high signalling is sent to user equipment; the high signalling includes the HARQ synchronous attribute of the data packet; the high signalling is radio resource control RRC signalling or media access control MAC signalling; when the HARQ synchronous attribute of the data packet is configured to the asynchronous HARQ, the HARQ process number of the data packet is configured; downlink control information for dispatching the data packet is sent to the user equipment; and the downlink control information is also used for indicating the HARQ process number.

Description

technical field [0001] The present invention relates to the communication field, in particular to a data transmission method, device and system. Background technique [0002] The LTE (Long Term Evolution, Long Term Evolution) system supports Time Division Duplexing (Time Division Duplexing, TDD) mode, in which uplink (UL, Uplink) and downlink (DL, Downlink) use different time slots of the same frequency carrier. The LTE TDD system can semi-statically adjust the uplink-downlink configuration (Uplink-Downlink Configuration) according to different service types to meet the asymmetric uplink-downlink service requirements. [0003] In the existing LTE technology, which uplink-downlink ratio is used is semi-statically configured, and the configured uplink-downlink ratio may not match the instantaneous service type, so resources cannot be effectively utilized. In order to match the actual uplink and downlink ratio with the instantaneous service type and use communication resources...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/18
CPCH04L1/1822H04L1/1854H04L1/1887H04L1/1896H04L1/1812H04L1/1825H04L5/0092
Inventor 吕永霞李超君
Owner HUAWEI TECH CO LTD
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