US-12621197-B2 - Terminal device and processing method

Abstract

The present disclosure provides a terminal device and a processing method. The terminal device includes: a receiving unit configured to receive processing configuration information, wherein the processing configuration information indicates at least one of pre-processing and post-processing of Discrete Fourier Transform (DFT) spreading; a processing unit configured to determine at least one of the pre-processing and the post-processing of the DFT spreading according to the processing configuration information.

Inventors

• Juan Liu
• Wenjia LIU
• Xiaolin Hou
• Anxin Li
• Lan Chen
• Yoshihisa Kishiyama
• Takahiro Asai

Assignees

• NTT DOCOMO, INC.

Dates

Publication Date

20260505

Application Date

20210810

Claims (9)

1. 1 . A terminal device, comprising: a transceiver configured to receive processing configuration information and terminal device capability information, wherein the processing configuration information indicates at least one of pre-processing and post-processing of Discrete Fourier Transform (DFT) spreading; and a processor configured to determine at least one of the pre-processing and the post-processing of the DFT spreading according to the terminal device capability information and the processing configuration information.
2. 2 . The terminal device of claim 1 , wherein the transceiver is further configured to receive key performance indication information, and the processor is further configured to determine the at least one of the pre-processing and the post-processing of the DFT spreading according to the key performance indication and the processing configuration information.
3. 3 . The terminal device of claim 1 , wherein the pre-processing includes at least one of head sequence and tail sequence insertion, a zero-padding operation, and re-ordering.
4. 4 . The terminal device of claim 1 , wherein the post-processing includes at least one of data removal, phase compensation and superimposition, spectrum spreading, and spectrum shaping.
5. 5 . The terminal device of claim 1 , wherein the processing configuration information includes a joint indication parameter indicating at least one of the pre-processing and the post-processing of the Discrete Fourier Transform (DFT) spreading; or the processing configuration information includes at least one of a pre-processing parameter indicating the pre-processing of the DFT spreading and a post-processing parameter indicating the post-processing of the DFT spreading.
6. 6 . The terminal device of claim 1 , wherein the processor determines the at least one of the pre-processing and the post-processing of the DFT spreading according to the processing configuration information based on a pre-determined pre-processing and post-processing table.
7. 7 . The terminal device of claim 1 , wherein the processor further performs a DFT spreading operation according to the processing configuration information.
8. 8 . The terminal device of claim 1 , wherein the transceiver is configured to receive a DFT spreading instruction; and the processor is further configured to perform a DFT spreading operation according to the DFT spreading instruction.
9. 9 . A processing method applied to a terminal device, comprising: receiving processing configuration information and terminal device capability information, wherein the processing configuration information indicates at least one of pre-processing and post-processing of Discrete Fourier Transform (DFT) spreading; and determining at least one of the pre-processing and the post-processing of the DFT spreading according to the terminal device capability information and the processing configuration information.

Description

TECHNICAL FIELD The present disclosure relates to a field of wireless communication, and more particularly, to a processing method and a corresponding terminal device. BACKGROUND In order to realize the extremely high data rate requirement of 5G-Advanced and 6G, high frequency band related technologies such as millimeter wave (mmWave) and terahertz (THz) frequency have been regarded as recommended technologies in 5G-Advanced and 6G communication. System design with large bandwidth and high frequency band is limited by nonlinearity of Power Amplifiers (PAs). High spectrum efficiency, high power efficiency and high flexibility should be considered in waveform design to support more schemes. Due to the high Peak-to-Average Power Ratio (PAPR), Orthogonal Frequency Division Multiplexing waveforms with a Cyclic Prefix (CP-OFDM) will show signal distortion and performance degradation under the influence of the nonlinearity of the power amplifiers. In this case, Discrete Fourier Transform spread Orthogonal Frequency Division Multiplexing (DFT-s-OFDM) waveforms applied to 4G and 5G uplinks have an advantage of low peak-to-average power ratio, and can be regarded as candidate waveforms for 5G-Advanced and 6G. On the other hand, waveforms obtained by the DFT-s-OFDM scheme have some problems such as low spectral efficiency and high out-of-band leakage, thus an improvement to the DFT-s-OFDM scheme is proposed. For example, a traditional cyclic prefix may be replaced with a Null Cyclic Prefix (NCP) or a Unique Word (UW) for a data sequence to be transmitted before Discrete Fourier Transform (DFT) is performed, so as to reduce out-of-band leakage and improve spectral efficiency. As another example, Frequency Domain Spectrum Shaping (FDSS) may be performed after the Discrete Fourier Transform (DFT) is performed, so as to affect a correlation distribution of time-domain signals, thereby reducing PAPR. However, compatibility and flexibility of the current DFT-s-OFDM scheme and improved schemes thereof are poor, making it difficult to integrate with a future communication system framework, so it is still difficult to apply them in the communication system. SUMMARY According to an aspect of the present disclosure, there is provided an electronic device, including: a receiving unit configured to receive processing configuration information, wherein the processing configuration information indicates at least one of pre-processing and post-processing of Discrete Fourier Transform (DFT) spreading; a processing unit configured to determine at least one of the pre-processing and the post-processing of the DFT spreading according to the processing configuration information. According to another aspect of the present disclosure, the receiving unit is further configured to receive terminal device capability information, the processing unit is further configured to determine the at least one of the pre-processing and the post-processing of the DFT spreading according to the terminal device capability information and the processing configuration information. According to another aspect of the present disclosure, the receiving unit is further configured to receive key performance indication information, the processing unit is further configured to determine the at least one of the pre-processing and the post-processing of the DFT spreading according to the key performance indication and the processing configuration information. According to another aspect of the present disclosure, the pre-processing includes at least one of head sequence and tail sequence insertion, a zero-padding operation, and re-ordering. According to another aspect of the present disclosure, the post-processing includes at least one of data removal, phase compensation and superimposition, spectrum spreading, and spectrum shaping. According to another aspect of the present disclosure, the processing configuration information includes a joint indication parameter indicating at least one of the pre-processing and the post-processing of the Discrete Fourier Transform (DFT) spreading; or the processing configuration information includes at least one of a pre-processing parameter indicating the DFT spreading and a post-processing parameter indicating the DFT spreading. According to another aspect of the present disclosure, the processing unit determines the at least one of the pre-processing and the post-processing of the DFT spreading according to the processing configuration information based on a pre-determined pre-processing and post-processing table. According to another aspect of the present disclosure, the processing unit further performs a DFT spreading operation according to the processing configuration information. According to another aspect of the present disclosure, the receiving unit is configured to receive a DFT spreading instruction; the processing unit is further configured to perform a DFT spreading operation according to the DFT spreading instruction. A