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Communication method and device

A communication method and technology of communication equipment, applied in the field of communication, can solve the problem that cross configuration is difficult to meet NR requirements and other problems

Active Publication Date: 2019-01-18
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in NR, these two modulation methods may cover a larger SNR range, and scenarios with different bandwidths need to be considered. The fixed cross configuration of NB-IOT is difficult to meet the requirements of NR

Method used

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Experimental program
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Embodiment 2

[0346] Embodiment 2: The user equipment cannot directly configure the MCS table or update the MCS table, and the configuration and update of the MCS table on the user equipment side need to be determined by the network device.

[0347] Figure 7 An interactive schematic diagram of a communication method provided by the embodiment of this application, including steps S301-S304:

[0348] S301. The network device determines the modulation mode corresponding to the target index number according to the correspondence between the index number and the modulation mode.

[0349]S302. The network device communicates according to the modulation mode corresponding to the target index number.

[0350] S303. The user equipment determines the modulation mode corresponding to the target index number according to the correspondence relationship between the index number and the modulation mode.

[0351] S304. The user equipment communicates according to the modulation mode corresponding to th...

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Abstract

The embodiment of the invention provides a communication method and device, and solves a problem that the NR cannot meet a requirement of a network device for the flexible selection of a modulation mode. The method includes the steps that a first communication device determines a modulation mode corresponding to a target index number according to the correspondence between the index number and themodulation mode, wherein the correspondence between the index number and the modulation mode includes a modulation mode set corresponding to each index number, and the modulation mode set includes atleast one modulation mode, each of K modulation mode sets includes a Pi / 2 binary phase shift keying Pi / 2 BPSK modulation or a quadrature phase shift keying QPSK modulation, and K is an integer greater than zero; the first communication device performs communication according to the modulation mode corresponding to the target index number.

Description

technical field [0001] The present application relates to the technical field of communication, and in particular to a communication method and device. Background technique [0002] The new generation of wireless communication system (new radio, NR) includes a working frequency band above 6 GHz. In order to improve the coverage under the condition of limited power amplifier capability, NR uplink adopts discrete Fourier transform spread orthogonal frequency division multiplexing (discretefourier transformation spread orthogonal The frequency division multiplexing, DFT-S-OFDM) waveform is a supplement to the OFDM waveform. In order to further reduce the peak to average power ratio (PAPR) of the DFT-S-OFDM waveform, NR introduces π / 2-binary phase Shift keying (π / 2-binaryshift-phase keying, π / 2-BPSK) modulation and frequency domain spectrum shaping (frequency domain spectrum shaping, FDSS) technology. π / 2-BPSK modulation overlaps with the existing quadrature phase shift keying ...

Claims

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Application Information

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IPC IPC(8): H04L27/32H04L27/34H04L27/36H04L27/20H04L1/00
CPCH04L1/0003H04L27/20H04L27/32H04L27/34H04L27/36H04L1/00
Inventor 刘凤威陈磊
Owner HUAWEI TECH CO LTD