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A kind of wireless communication method and wireless communication device

A wireless communication device and technology for wireless communication, applied in wireless communication, duplex signal operation, time division multiplexing usage, etc., can solve problems such as poor demodulation performance

Active Publication Date: 2021-09-14
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The embodiment of the present application provides a wireless communication method for solving the technical problem of poor demodulation performance during data transmission

Method used

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  • A kind of wireless communication method and wireless communication device
  • A kind of wireless communication method and wireless communication device
  • A kind of wireless communication method and wireless communication device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0170] Figure 5 A schematic flowchart corresponding to a wireless communication method provided in Embodiment 1 of the present application is executed by a wireless communication device, such as Figure 5 shown, including:

[0171] Step 501: Generate a complex-valued symbol sequence, where the complex-valued symbol sequence includes a plurality of complex-valued symbols.

[0172] Step 502: Map the complex-valued symbol sequence to resource elements of multiple subframes respectively, and each of the resource elements corresponds to one of the complex-valued symbols.

[0173] Here, respectively mapping the complex-valued symbol sequence to the resource elements of the multiple subframes refers to repeatedly mapping the complex-valued symbol sequence to the resource elements of the multiple subframes. Taking the complex-valued symbol sequence y(0),...,y(M-1) mapped to the resource elements of 3 subframes as an example, it means: mapping the complex-valued symbol sequence y(0)...

Embodiment 2

[0265] Figure 8 A schematic flowchart corresponding to a wireless communication method provided in Embodiment 2 of the present application is executed by a wireless communication device, such as Figure 8 shown, including:

[0266] Step 801: Obtain a first complex-valued symbol sequence mapped to a resource element of a special subframe. Here, the first complex-valued symbol sequence is z(0), . . . , z(M-1) in the above-mentioned first embodiment.

[0267] Step 802: Perform sequence transformation on the first complex-valued symbol sequence according to the order of the complex-valued symbols mapped to the resource elements of the special subframes, to obtain a sequence of the first complex-valued symbol sequence mapped to the resource elements of multiple special subframes respectively. A second sequence of complex-valued symbols. The multiple special subframes include a first special subframe and a second special subframe, and the order of the complex-valued symbols mapp...

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Abstract

The present application discloses a wireless communication method and a wireless communication device. The wireless communication method includes: generating a complex-valued symbol sequence, the complex-valued symbol sequence includes a plurality of complex-valued symbols, and each complex-valued symbol carries information bits to be transmitted; Mapping complex-valued symbol sequences to resource elements of multiple special subframes, each resource element corresponds to a complex-valued symbol; wherein, multiple special subframes include a first special subframe and a second special subframe, which are mapped to The order of the complex-valued symbols onto the resource elements of the first special subframe is different from the order of the complex-valued symbols mapped onto the resource elements of the second special subframe. In this way, when the complex-valued symbol sequence is repeatedly sent, it can effectively avoid that the number of repetitions of some complex-valued symbols in the complex-valued symbol sequence is significantly less than that of other complex-valued symbols, thereby improving the demodulation performance of NB‑IoT data transmission.

Description

technical field [0001] The present invention relates to the field of wireless communication technologies, and in particular, to a wireless communication method and a wireless communication device. Background technique [0002] Two frame structures are supported in a long term evolution (long term evolution, LTE) system: a frequency division duplex (FDD) frame structure and a time division duplexing (TDD) frame structure. The TDD frame structure is shown in Table 1. The length of one radio frame is 10ms, and there are 10 subframes in total, and each subframe is 1ms. Further, the 10 subframes include special subframes and ordinary subframes, and the special subframes are divided into 3 time slots: downlink pilot slot (DwPTS), guard period (GP) and uplink pilot Frequency time slot (uplinkpilot slot, UpPTS); ordinary subframes are divided into uplink subframes and downlink subframes, uplink subframes are used to transmit uplink control signaling and service data, etc., and down...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W72/04H04L5/14H04L1/00
CPCH04L1/0006H04L5/14H04W72/0446H04L1/00H04L5/26H04W72/04
Inventor 李军焦淑蓉铁晓磊罗之虎
Owner HUAWEI TECH CO LTD