Search

US-12621835-B2 - Method and electronic device for transmitting precoded PUCCH signal in wireless communication system

US12621835B2US 12621835 B2US12621835 B2US 12621835B2US-12621835-B2

Abstract

Provided is an operation method of an electronic device including a plurality of antennas, the operation method including obtaining precoding information from a base station, generating a physical uplink control channel (PUCCH) precoding vector based on the precoding information, generating a precoded PUCCH signal by multiplying a PUCCH signal by the PUCCH precoding vector, and transmitting the precoded PUCCH signal to the base station by using the plurality of antennas.

Inventors

  • Byongok Lee
  • Joohyun DO
  • Heejin SEO
  • Hyunseok Yu

Assignees

  • SAMSUNG ELECTRONICS CO., LTD.

Dates

Publication Date
20260505
Application Date
20230711
Priority Date
20220712

Claims (17)

  1. 1 . An operation method of an electronic device comprising a plurality of antennas, the operation method comprising: obtaining precoding information from a base station; generating a physical uplink control channel (PUCCH) precoding vector based on the precoding information; generating a precoded PUCCH signal by multiplying a PUCCH signal by the PUCCH precoding vector; and transmitting the precoded PUCCH signal to the base station by using the plurality of antennas, wherein the generating the PUCCH precoding vector comprises: obtaining the PUCCH precoding vector from a precoding matrix set, while a transmission mode of the electronic device is a first transmission mode that is based on a codebook; and obtaining the PUCCH precoding vector based on a channel state information-reference signal (CSI-RS) received from the base station, while the transmission mode of the electronic device is a second transmission mode that is not based on a codebook.
  2. 2 . The operation method of claim 1 , wherein the obtaining of the precoding information comprises transmitting a sounding reference signal (SRS) to the base station, and wherein the precoding information comprises information about the precoding matrix set.
  3. 3 . The operation method of claim 2 , wherein the information about the precoding matrix set comprises a transmission precoding matrix index (TPMI) corresponding to an index of the precoding matrix set.
  4. 4 . The operation method of claim 3 , wherein a precoding matrix of the precoding matrix set corresponds to the index, and wherein the generating of the PUCCH precoding vector comprises generating the precoding matrix as the PUCCH precoding vector based on a rank of the precoding matrix being 1.
  5. 5 . The operation method of claim 3 , wherein a precoding matrix of the precoding matrix set corresponds to the index, and wherein the generating of the PUCCH precoding vector comprises generating a first column of the precoding matrix as the PUCCH precoding vector based on a rank of the precoding matrix exceeding 1.
  6. 6 . The operation method of claim 1 , wherein the generating of the PUCCH precoding vector while the transmission mode of the electronic device is the second transmission mode comprises: calculating a correlation coefficient matrix of a receiving channel; calculating eigenvalues of the correlation coefficient matrix; calculating eigenvectors of the correlation coefficient matrix; and generating one of the eigenvectors as the PUCCH precoding vector.
  7. 7 . The operation method of claim 6 , wherein the generating the one of the eigenvectors as the PUCCH precoding vector comprises: identifying a largest eigenvalue from among the eigenvalues; and generating an eigenvector corresponding to the largest eigenvalue as the PUCCH precoding vector.
  8. 8 . An electronic device comprising: a communication circuit comprising a plurality of antennas and configured to transmit a precoded physical uplink control channel (PUCCH) signal to a base station and receive precoding information; and a control circuit configured to generate a PUCCH precoding vector based on the precoding information, generate the precoded PUCCH signal by multiplying a PUCCH signal by the PUCCH precoding vector, and control the communication circuit to transmit the precoded PUCCH signal to the base station by using the plurality of antennas, wherein the control circuit is further configured to: obtain the PUCCH precoding vector from a precoding matrix set, while a transmission mode of the electronic device is a first transmission mode that is based on a codebook; and obtain the PUCCH precoding vector based on a channel state information-reference signal (CSI-RS) received from the base station, while the transmission mode of the electronic device is a second transmission mode that is not based on a codebook.
  9. 9 . The electronic device of claim 8 , further comprising a memory configured to store the precoding matrix set, wherein the control circuit is further configured to control the communication circuit to transmit a sounding reference signal (SRS) to the base station, and to receive the precoding information comprising information about the precoding matrix set from the base station.
  10. 10 . The electronic device of claim 9 , wherein the precoding information comprises a transmission precoding matrix index (TPMI) corresponding to an index of the precoding matrix set.
  11. 11 . The electronic device of claim 10 , wherein a precoding matrix of the precoding matrix set corresponds to the index, and wherein the control circuit is further configured to generate the precoding matrix as the PUCCH precoding vector based on a rank of the precoding matrix being 1.
  12. 12 . The electronic device of claim 10 , wherein a precoding matrix of the precoding matrix set corresponds to the index, and wherein the control circuit is further configured to generate a first column of the precoding matrix as the PUCCH precoding vector based on a rank of the precoding matrix exceeding 1.
  13. 13 . The electronic device of claim 8 , wherein the control circuit is further configured to, while the transmission mode of the electronic device is the second transmission mode, calculate a correlation coefficient matrix of a receiving channel, calculate eigenvalues of the correlation coefficient matrix, calculate eigenvectors of the correlation coefficient matrix, and generate one of the eigenvectors as the PUCCH precoding vector.
  14. 14 . The electronic device of claim 13 , wherein the control circuit is further configured to identify a largest eigenvalue from among the eigenvalues, and generate an eigenvector corresponding to the largest eigenvalue as the PUCCH precoding vector.
  15. 15 . A wireless communication system comprising: a base station configured to control an uplink based on a precoded physical uplink control channel (PUCCH) signal; and an electronic device comprising: a plurality of antennas; a communication circuit configured to transmit the precoded PUCCH signal and receive a precoding information; and a control circuit configured to generate a PUCCH precoding vector based on the precoding information, generate the precoded PUCCH signal by multiplying a PUCCH signal by the PUCCH precoding vector, and control the communication circuit to transmit the precoded PUCCH signal to the base station by using the plurality of antennas, wherein the control circuit is further configured to: obtain the PUCCH precoding vector from a precoding matrix set, while a transmission mode of the electronic device is a first transmission mode that is based on a codebook; and obtain the PUCCH precoding vector based on a channel state information-reference signal (CSI-RS) received from the base station, while the transmission mode of the electronic device is a second transmission mode that is not based on a codebook.
  16. 16 . The wireless communication system of claim 15 , further comprising a memory configured to store the precoding matrix set which is common to the base station, wherein the control circuit is further configured to control the communication circuit to transmit a sounding reference signal (SRS) to the base station, and to receive the precoding information comprising information about the precoding matrix set from the base station.
  17. 17 . The wireless communication system of claim 16 , wherein the precoding information comprises a transmission precoding matrix index (TPMI) corresponding to an index of the precoding matrix set.

Description

CROSS-REFERENCE TO RELATED APPLICATION This application claims priority to Korean Patent Application No. 10-2022-0085878, filed on Jul. 12, 2022, in the Korean Intellectual Property Office, the disclosure of which is incorporated by reference herein in its entirety. BACKGROUND The present disclosure relates to a method and an electronic device for transmitting a signal, and in particular, to an electronic device for transmitting a physical uplink control channel (PUCCH) signal, which is precoded by using a plurality of antennas, and an operating method of the electronic device. As mobile communication technology continues to develop, the use of portable terminals providing various functions continues to increase, and efforts have been made to develop a 5G communication system to meet the increasing demand for wireless data traffic. In addition to the frequency bands used in 3G communication systems and long term evolution (LTE) communication systems, implementations in higher frequency bands (for example, about 25 to about 60 GHz bands) are being considered to achieve higher data transmission speed in the 5G communication system. For example, to reduce a path loss of a radio wave and to increase a propagation distance of a radio wave in a mmWave band, beamforming, massive multiple-input multiple-output (MIMO), full dimensional (FD) MIMO (FD-MIMO), an array antenna, analog beam-forming, and large scale antenna technology have been studied in the 5G communication system. SUMMARY The present disclosure provides an electronic device for transmitting a precoded physical uplink control channel (PUCCH) signal by using a plurality of antennas and an operating method of the electronic device. According to example embodiments, there is provided an operation method of an electronic device including a plurality of antennas, the operation method including obtaining precoding information from a base station, generating a physical uplink control channel (PUCCH) precoding vector based on the precoding information, generating a precoded PUCCH signal by multiplying the PUCCH signal by a PUCCH precoding vector, and transmitting the precoded PUCCH signal to the base station by using the plurality of antennas. According to example embodiments, there is provided an electronic device including a communication circuit including a plurality of antennas and configured to transmit a precoded physical uplink control channel (PUCCH) signal to a base station and receive precoding information, and a control circuit configured to generate a PUCCH precoding vector based on the precoding information, generate the precoded PUCCH signal by multiplying a PUCCH signal by the PUCCH precoding vector, and control the communication circuit to transmit the precoded PUCCH signal to the base station by using the plurality of antennas. According to example embodiments, there is provided a wireless communication system including a base station configured to control an uplink based on a precoded physical uplink control channel (PUCCH) signal, and an electronic device including a plurality of antennas, a communication circuit configured to transmit the precoded PUCCH signal and receive a precoding information, and a control circuit configured to generate a PUCCH precoding vector based on the precoding information, generate the precoded PUCCH signal by multiplying a PUCCH signal by the PUCCH precoding vector, and control the communication circuit to transmit the precoded PUCCH signal to the base station by using the plurality of antennas. BRIEF DESCRIPTION OF DRAWINGS The above and other aspects and features will be more apparent from the following description of example embodiments, taken in conjunction with the accompanying drawings, in which: FIG. 1 is a block diagram of a wireless communication system according to an example embodiment; FIG. 2 is a block diagram of an electronic device according to an example embodiment; FIG. 3 is a flowchart of an operation of an electronic device according to an example embodiment; FIG. 4 is a block diagram of an operation of an electronic device in a transmission mode based on a codebook, according to an example embodiment; FIG. 5 is a signal exchange diagram in a transmission mode based on a codebook, according to an example embodiment; FIG. 6 is a flowchart of a physical uplink control channel (PUCCH) precoding vector generation operation, according to an example embodiment; FIG. 7 is a block diagram of an operation of an electronic device in a transmission mode not based on a codebook, according to an example embodiment; FIG. 8 is a signal exchange diagram in a transmission mode not based on a codebook, according to an example embodiment; FIG. 9 is a flowchart of a PUCCH precoding vector generation operation, according to an example embodiment; FIG. 10 is a detailed flowchart of an operation of generating one of eigenvectors, as a PUCCH precoding vector, according to an example embodiment; FIGS. 11A and 11B are d