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Data transmission method, device and equipment applied to multi-transmission time interval (TTI) system

A data transmission method and technology of a data transmission device, applied in the field of data transmission, can solve the problems of high overhead and difficult parameter configuration, and achieve the effect of improving resource utilization.

Inactive Publication Date: 2017-07-04
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Embodiments of the present invention provide a data transmission method, device, and equipment for a multi-transmission time interval TTI system. By configuring self-contained feedback across sub-bands, the problem of self-contained feedback caused by different TTIs in each sub-band can be solved. Parameters are difficult to configure and the overhead is too large, so that system resources can be fully utilized

Method used

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  • Data transmission method, device and equipment applied to multi-transmission time interval (TTI) system
  • Data transmission method, device and equipment applied to multi-transmission time interval (TTI) system
  • Data transmission method, device and equipment applied to multi-transmission time interval (TTI) system

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Embodiment 1

[0074] The embodiment of the present invention provides a frame structure that can better support fast self-contained feedback based on F-OFDM. The self-contained feedback in the embodiment of the present invention may be included in the uplink subframe or in the downlink subframe. in frame.

[0075] As a method provided by the embodiment of the present invention, on the basis of F-OFDM, a carrier is divided into different subbands, and each subband adopts a different TTI, that is, the waveform parameters of different subbands are different, wherein, Waveform parameters include subcarrier spacing, CP length, symbol length, number of symbols, etc. In order to better support self-contained feedback based on F-OFDM, the self-contained feedback of all subbands is uniformly configured instead of keeping the self-contained feedback of all subbands independent of each other.

[0076] Figure 7 It is a schematic diagram of the frame structure of self-contained feedback based on F-OF...

Embodiment 2

[0095] The embodiment of the present invention proposes a frame structure of self-contained feedback based on F-OFDM, and provides a method of how to utilize transmission resources of truncated symbols when configuring self-contained.

[0096] According to the frame structure of Embodiment 1, self-contained time slots are configured to span multiple subbands or the entire carrier. When the UE performs data transmission on the self-contained time slot, it needs to consider the resource location in the frequency domain. For example, a certain UE has limited capabilities and can only perform data transmission in a certain subband. Therefore, the position of its corresponding self-contained feedback needs to be kept on the same frequency domain resource as that of the subband. In addition, since self-contained feedback is mainly used for feedback of ultra-low delay services (such as MTC services), the data packets transmitted by such services are generally small, and the bandwidth...

Embodiment 3

[0104] Embodiment 1 provides a general configuration method, but a specific configuration method is required for configuring the waveform parameters of self-contained feedback. An embodiment of the present invention provides a method for configuring self-contained feedback waveform parameters.

[0105] Method 1: Configure self-contained feedback through broadcast or RRC dedicated configuration message, wherein the configuration parameters include at least one of the following: starting position, bandwidth (multiple different bandwidth configurations are possible, that is, one carrier can be The self-contained feedback is divided into several different parts, that is, the self-contained feedback of one or more subbands is combined.), the configuration interval indication (such as once or 2 times per millisecond, etc.), the reference waveform parameters of the self-contained feedback (CP length, subcarrier spacing, number of symbols) and waveform parameter configuration (CP leng...

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Abstract

The embodiment of the invention provides a data transmission method applied to a multi-transmission time interval (TTI) system. The method comprises the steps of generating a data frame comprising self-contained feedback; and transmitting the data fame on a plurality of sub-bands formed by dividing a carrier, wherein at least two sub-bands in the plurality of sub-bands have different TTI, the self-contained feedbacks of the at least two sub-bands in the plurality of sub-bands have the same parameter, and the self-contained feedbacks of plurality of sub-bands have the same time length. The problem that the self-contained feedback of each sub-band is ultra low in resource utilization rate due to different TTI and waveform parameter configuration can be solved by configuring the self-contained feedback across the sub-band; according to the method provided by the embodiment of the invention, the resource utilization rate of the self-contained feedback can be improved.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a data transmission method, device and equipment for a multi-transmission time interval TTI system. Background technique [0002] The development of mobile communication technology, especially the use of smart terminals, has greatly promoted the development of mobile networks, making the demand for mobile network broadband is increasing day by day, and this growth is still continuing. According to predictions, there will be 50 billion or more Machine Type Communication (English: Machine Type Communication; MTC for short) devices that will be connected to the network in the future. At present, the development of smart hardware is on the rise, such as smart bracelets, smart watches, smart meters, etc. are gradually being accepted and used by everyone. It can be expected that this type of machine-to-machine communication or machine-to-machine communication Abbreviati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L5/00H04W72/04
CPCH04L5/0008H04L5/0055H04L5/0082H04W72/0446H04W72/0453H04L5/00H04W72/04H04L5/0007H04L5/001H04L5/0053H04L5/14H04B1/667H04L5/0044H04L5/005H04L5/0092H04L5/0094
Inventor 刘亚林陈磊
Owner HUAWEI TECH CO LTD
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