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Method and device for data transmission

A data transmission, integer technology, applied in the field of data transmission, can solve problems such as subcarrier offset

Active Publication Date: 2021-10-22
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, if a unified IFFT operation is performed on discretely distributed component carriers, since the subcarrier allocation in the aggregated bandwidth is continuous, it is possible to shift the subcarriers to the unusable bandwidth when allocating subcarriers

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  • Method and device for data transmission
  • Method and device for data transmission

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Embodiment Construction

[0053] The technical solution in this application will be described below with reference to the accompanying drawings.

[0054] It should be understood that the division of methods, situations, categories and embodiments in the embodiments of the present application is only for the convenience of description and should not constitute a special limitation. The features in various methods, categories, situations and embodiments are not contradictory cases can be combined.

[0055] It should also be understood that "first" and "second" in the embodiments of the application are only for distinction and shall not constitute any limitation to the present application.

[0056] It should also be understood that in various embodiments of the present application, the sequence numbers of the processes do not mean the order of execution, and the execution order of the processes should be determined by their functions and internal logic, and should not be used in the embodiments of the pre...

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Abstract

The present application provides a method and device for data transmission, which can prevent subcarriers from shifting to unusable bandwidth. Including: determining the subcarrier mapping method of each resource unit in N resource units, the N resource units belong to W resource units, the W resource units are continuous in the frequency domain, and each resource unit in the W resource units The subcarrier spacing is equal and the bandwidth is the same, the bandwidth of each resource unit is a non-integer multiple of the subcarrier spacing, the subcarrier mapping methods of at least two resource units in the W resource units are different, and the subcarriers in each resource unit Carriers are continuous in the frequency domain, and the subcarrier mapping method of each resource unit is used to indicate the center frequency of each subcarrier of each resource unit, and the difference between the center frequencies of any two subcarriers of the W resource units is the subcarrier spacing an integer multiple of ; perform data transmission according to the subcarrier mapping manner of each resource unit in the N resource units.

Description

technical field [0001] The present application relates to the communication field, and more specifically, to a data transmission method and device. Background technique [0002] With the development of mobile communication technology, traditional narrowband systems, such as Trans-European Trunked Radio (TETRA) and Digital Mobile Radio (DMR), are also seeking broadband solutions. However, existing spectrum resources are becoming increasingly scarce, and it is difficult to find free continuous broadband spectrum. An effective solution is the carrier aggregation technology, which enables multiple discrete narrowbands to realize wideband data transmission, so as to meet the wideband requirements of the narrowband system. [0003] Currently, there is a carrier aggregation technology of physical layer aggregation. In the physical layer aggregation process, the data of multiple component carriers will be modulated by Orthogonal Frequency Division Multiplexing (OFDM), that is, the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L5/00H04L27/26
CPCH04L5/001H04L27/2646
Inventor 侯舒娟许健王新征
Owner HUAWEI TECH CO LTD