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Data transmission method, apparatus and system thereof

A data transmission method and data packet technology, which are applied in the field of data transmission methods, devices and systems, can solve the problems of reducing downlink throughput, weakening the gain of flexible subframes configured, flexible subframes cannot be configured as downlink subframes, etc., to achieve improved Effect of Downlink Throughput

Active Publication Date: 2012-10-17
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
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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, apparatus and system thereof
  • Data transmission method, apparatus and system thereof
  • Data transmission method, apparatus and system thereof

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Embodiment Construction

[0019] 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.

[0020] 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.

[0021] In the LTE TDD system, there are 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 do...

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Abstract

An embodiment of the invention discloses a data transmission method, an apparatus and a system thereof and relates to the communication field. In order to make a flexible subframe achieve flexible configuration and increase a downlink throughput, a technical scheme provided in the invention has the following steps: configuring a hybrid automatic repeat request (HARQ) synchronization attribute of a data packet, wherein the HARQ synchronization attribute comprises a synchronous HARQ or an asynchronous HARQ; when the HARQ synchronization attribute of the data packet is configured to be the asynchronous HARQ, configuring a HARQ process number of the data packet; sending downlink control information which is used to schedule the data packet to user equipment.

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 the uplink (UL, Uplink) and downlink (DL, Downlink) use different frequency carriers of the same frequency same time slot. 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 type of instantaneous service and make...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/04H04W72/12H04L1/18
CPCH04L1/1887H04L1/1822H04L1/1896H04L1/1825H04W72/12H04L1/1854H04L1/1812H04L5/0092
Inventor 吕永霞李超君
Owner HUAWEI TECH CO LTD
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