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CN-121984824-A - Communication method and communication device

CN121984824ACN 121984824 ACN121984824 ACN 121984824ACN-121984824-A

Abstract

The application provides a communication method and a communication device, which can be applied to a data-energy simultaneous transmission scene, and a constellation diagram for an energy-transmission frequency domain resource unit is designed, so that constellation diagrams corresponding to modulation symbols on the energy-transmission frequency domain resource unit and the data-frequency domain resource unit are different, namely the data-frequency domain resource unit and the energy-transmission frequency domain resource unit are modulated by different modulation modes, and therefore a receiving end device correctly identifies the position of the energy-transmission frequency domain resource unit, and correct data is demodulated.

Inventors

  • LIU YATING
  • LI CHENG
  • WU FANGZHOU

Assignees

  • 华为技术有限公司

Dates

Publication Date
20260505
Application Date
20241031

Claims (20)

  1. 1. A method of communication, comprising: Generating a first time domain continuous signal, wherein the first time domain continuous signal carries first data, the first time domain continuous signal is carried on a first Orthogonal Frequency Division Multiplexing (OFDM) symbol and N frequency domain resource units, the N frequency domain resource units comprise P first frequency domain resource units and Q second frequency domain resource units, the first frequency domain resource units are used for carrying data signals, the second frequency domain resource units are used for carrying energy signals, each first frequency domain resource unit in the P first frequency domain resource units carries one or more first modulation symbols, each second frequency domain resource unit in the Q second frequency domain resource units carries one or more second modulation symbols, constellation points corresponding to the first modulation symbols are constellation points in a first constellation diagram, constellation points corresponding to the second modulation symbols are constellation points in a second constellation diagram, and the distance between any constellation point in the second constellation diagram and any constellation point in the first constellation diagram is larger than or equal to a first value, wherein the constellation point in the second constellation diagram is smaller than or equal to N, P, and the constellation point in the N is smaller than N; And transmitting the first time domain continuous signal.
  2. 2. The method of claim 1, wherein the first data comprises a first portion and a second portion, each of the N frequency domain resource units carrying one modulation symbol; The generating a first time domain continuous signal includes: determining indexes of the Q second frequency domain resource units according to the second part; Determining P first modulation symbols according to the first portion and the first constellation; Determining Q second modulation symbols according to a second time domain continuous signal, the index of the Q second frequency domain resource units and the second constellation diagram, wherein the second time domain continuous signal is carried on the P first frequency domain resource units and the Q second frequency domain resource units, the P first frequency domain resource units carry the first modulation symbols, and the energy on the Q second frequency domain resource units is 0; and mapping the P first modulation symbols to the P first frequency domain resource units respectively, and mapping the Q second modulation symbols to the Q second frequency domain resource units respectively.
  3. 3. The method of claim 1 or 2, wherein the first data comprises a first portion and a second portion; the first time domain continuous signal carrying first data comprises: The first part is carried on the P first frequency domain resource units, and the second part is represented by the indexes of the Q second frequency domain resource units, or The first portion is carried on the P first frequency domain resource units, and the second portion is represented by indexes of the P first frequency domain resource units.
  4. 4. The method of claim 2, wherein said determining Q of said second modulation symbols from the second time domain continuous signal, the index of said Q of second frequency domain resource elements and said second constellation comprises: And determining Q second modulation symbols in the second constellation diagram, so that after the Q second modulation symbols are mapped on the Q second frequency domain resource units respectively, the PAPR of the first time domain continuous signal is smaller than or equal to a first PAPR, where the first PAPR is the PAPR of a time domain continuous signal obtained by mapping any Q modulation symbols obtained according to the second constellation diagram on the Q second frequency domain resource units, the Q second frequency domain resource units have indexes of Q second frequency domain resource units, and the PAPR of the first time domain continuous signal is smaller than the PAPR of the second time domain continuous signal.
  5. 5. The method of claim 2, wherein said determining Q of said second modulation symbols from the second time domain continuous signal, the index of said Q of second frequency domain resource elements and said second constellation comprises: And determining Q peak value offset signals on Q second frequency domain resource units according to the PAPR of the first time domain continuous signal, and obtaining Q second modulation symbols according to the Q peak value offset signals and the second constellation diagram, wherein the Q second frequency domain resource units have indexes of Q second frequency domain resource units and the PAPR of the first time domain continuous signal is smaller than the PAPR of the second time domain continuous signal.
  6. 6. The method according to any one of claims 1 to 5, wherein prior to transmitting the first time domain continuous signal, the method further comprises: transmitting a reference signal; And receiving a first measurement report, wherein the first measurement report is determined according to the reference signal, the first measurement report indicates U frequency domain resource units, the U frequency domain resource units are used for determining the P first frequency domain resource units and/or the Q second frequency domain resource units, and the U is a positive integer.
  7. 7. The method of claim 6, wherein the first measurement report includes an index of the U frequency domain resource units used for the determination of the Q second frequency domain resource units, or The first measurement report includes an index of O frequency domain resource units, the index of O frequency domain resource units being used for determination of the P first frequency domain resource units, or The first measurement report includes signal-to-noise ratios of different frequency domain resource units in the reference signal, where O is a positive integer.
  8. 8. The method according to claim 6 or 7, characterized in that the method further comprises: Transmitting first configuration information; The first measurement report being determined from the reference signal includes the first measurement report being determined from the reference signal and the first configuration information.
  9. 9. The method of claim 8, wherein the first configuration information indicates one or more of the following information: A first number indicating the number of frequency domain resource units available for carrying energy signals to be reported, or A first duty cycle indicating the ratio of the number of frequency domain resource units needed to be reported and available for carrying the energy signal to the number of all frequency domain resource units associated with the reference signal, or A first communication capacity threshold indicating that a ratio of a communication capacity of a frequency domain resource unit to be reported and available for carrying a data signal to a total communication capacity is greater than the first communication capacity threshold, the total communication capacity being a communication capacity when all frequency domain resource units carrying the reference signal are used for communication, or A first energy threshold, indicating that the ratio of energy of the frequency domain resource units which need to be reported and can be used for bearing the energy signal to total energy is greater than the first energy threshold, wherein the total energy is the communication capacity when all the frequency domain resource units bearing the reference signal are used for charging energy, or Modulation coding scheme, MCS.
  10. 10. The method according to any of claims 1 to 9, wherein the first value is predefined or determined based on a configuration or indication of a network device.
  11. 11. A method of communication, comprising: Receiving a first time domain continuous signal, wherein the first time domain continuous signal carries first data, the first time domain continuous signal is carried on a first Orthogonal Frequency Division Multiplexing (OFDM) symbol and N frequency domain resource units, the N frequency domain resource units comprise P first frequency domain resource units and Q second frequency domain resource units, the first frequency domain resource units are used for carrying data signals, the second frequency domain resource units are used for carrying energy signals, each first frequency domain resource unit in the P first frequency domain resource units carries one or more first modulation symbols, each second frequency domain resource unit in the Q second frequency domain resource units carries one or more second modulation symbols, constellation points corresponding to the first modulation symbols are constellation points in a first constellation diagram, constellation points corresponding to the second modulation symbols are constellation points in a second constellation diagram, and the distance between any constellation point in the second constellation diagram and any constellation point in the first constellation diagram is greater than or equal to a first value, wherein the constellation point in the second constellation diagram is greater than or equal to N, P, and the constellation point in the Q is smaller than N, and the Q is smaller than the N; The first data is determined from the first time domain continuous signal.
  12. 12. The method of claim 11, wherein each of the N frequency domain resource units carries one modulation symbol, The determining the first data from the first time domain continuous signal includes: determining N modulation symbols corresponding to the N frequency domain resource units, wherein each frequency domain resource unit in the N frequency domain resource units corresponds to one modulation symbol; determining indexes of P first modulation symbols and Q second frequency domain resource units in the N modulation symbols according to the mapping of the N modulation symbols on the first constellation diagram, and determining first data according to the indexes of the P first modulation symbols and the Q second frequency domain resource units, or And determining indexes of P first modulation symbols and P first frequency domain resource units in the N modulation symbols according to the mapping of the N modulation symbols on the first constellation diagram, and determining first data according to the indexes of the P first modulation symbols and the P first frequency domain resource units.
  13. 13. The method of claim 12, wherein said determining said first data from said first time domain continuous signal further comprises: And determining P first modulation symbols and Q second modulation symbols in the N modulation symbols according to the mapping of the N modulation symbols on the first constellation diagram and the second constellation diagram, wherein Q second frequency domain resource units with indexes of the Q second frequency domain resource units bear the Q second modulation symbols.
  14. 14. The method of claim 13, wherein the determining P first modulation symbols and Q second modulation symbols of the N modulation symbols from the mapping of the N modulation symbols on the first constellation and the second constellation comprises: Determining N constellation points corresponding to the N modulation symbols in the first constellation and the second constellation, wherein P constellation points in the N constellation points belong to the first constellation, and Q constellation points in the N constellation points belong to the second constellation; and determining the P modulation symbols corresponding to the P constellation points as the first modulation symbols, and determining the Q modulation symbols corresponding to the Q constellation points as the second modulation symbols.
  15. 15. The method according to any one of claims 11 to 14, further comprising: receiving first information, wherein the first information indicates the position relation between a second constellation diagram and a first constellation diagram; And determining the second constellation diagram according to the first information and the first constellation diagram.
  16. 16. The method according to any one of claims 11 to 15, wherein prior to receiving the first time domain continuous signal, the method further comprises: Receiving a reference signal; Determining a first measurement report according to the reference signal, wherein the first measurement report indicates U frequency domain resource units, the U frequency domain resource units are used for determining the P first frequency domain resource units and/or the Q second frequency domain resource units, and the U is a positive integer; And sending the first measurement report.
  17. 17. The method of claim 16, wherein the first measurement report includes an index of the U frequency domain resource units used for the determination of the Q second frequency domain resource units, or The first measurement report includes an index of O frequency domain resource units, the index of O frequency domain resource units being used for determination of the P first frequency domain resource units, or The first measurement report includes signal-to-noise ratios of different frequency domain resource units in the reference signal, where O is a positive integer.
  18. 18. The method according to claim 16 or 17, characterized in that the method further comprises: receiving first configuration information; the determining a first measurement report from the reference signal includes determining the first measurement report from the first configuration information and the reference signal.
  19. 19. The method of claim 18, wherein the first configuration information indicates one or more of the following: A first number indicating the number of frequency domain resource units available for carrying energy signals to be reported, or A first duty cycle indicating the ratio of the number of frequency domain resource units needed to be reported and available for carrying the energy signal to the total number of frequency domain resource units associated with the reference signal, or A first communication capacity threshold indicating that a ratio of a communication capacity of a frequency domain resource unit to be reported and available for carrying a data signal to a total communication capacity is greater than the first communication capacity threshold, the total communication capacity being a communication capacity when all frequency domain resource units carrying the reference signal are used for communication, or A first energy threshold, indicating that the ratio of energy of the frequency domain resource units which need to be reported and can be used for bearing the energy signal to total energy is greater than the first energy threshold, wherein the total energy is the communication capacity when all the frequency domain resource units in the reference signal are used for charging energy, or Modulation coding scheme, MCS.
  20. 20. The method according to any of claims 11 to 19, wherein the first value is predefined or determined based on a configuration or indication of a network device.

Description

Communication method and communication device Technical Field The present application relates to the field of wireless communication technologies, and in particular, to a communication method and a communication device in a digital-to-analog communication technology. Background In order to solve the problems that the internet of things (internet of things, ioT) node has low cost and small volume, cannot carry a battery with large capacity, and has short standby life, the industry proposes to provide continuous energy for the IoT node by adopting an environmental energy collection method. The wireless radio frequency energy is one of candidate energy sources, and has the advantages of controllable energy size, controllable energy source and the like, certain penetrating power and long transmission distance. Because a large number of base stations are deployed in the cellular mobile communication network, the base stations are provided with multiple antennas, can emit randomly designed electromagnetic waves and provide directional beams to enhance radio frequency energy in certain directions, frequency bands and time slots, and can greatly improve the problem of low efficiency of energy transmission. Thus, wireless energy transfer through a base station is one of the important approaches to solving IoT battery life shortboards in the future. But the resources of the cellular network are limited, and if a large amount of resources are used to serve IoT charging, the resources available for communication will be greatly limited. For IoT nodes, if data can be transmitted simultaneously in the process of charging, this can further improve the resource utilization, so wireless digital power co-transmission (simultaneous wireless information and power transfer, SWIPT) is proposed as an important technical means. And part of frequency domain resource units in the data energy co-transmission signal are used for energy filling, and part of frequency domain resource units are used for data transmission, wherein the subcarriers used for energy filling are called energy-transmission frequency domain resource units, and the subcarriers used for data transmission are called data frequency domain resource units. How to make the receiving end device correctly identify the position of the energy-transmitting frequency domain resource unit, so as to demodulate the correct data is a problem to be solved. Disclosure of Invention The application provides a communication method, which is favorable for enabling a receiving end communication device to know which frequency domain resource units are data frequency domain resource units or energy transmission frequency domain resource units so as to demodulate correct data. In a first aspect, a communication method is provided, which may be executed by a communication device or a module (e.g., a processor, a chip, or a circuit, etc., or may be a logic module, hardware, and/or software that may implement all or part of the functionality of the communication device) applied to the communication device. The communication device may be, for example, a data-capable signaling sender device, such as a network device or a terminal device. The method comprises the steps of generating first time domain continuous signals, wherein the first time domain continuous signals bear first data, the first time domain continuous signals bear first orthogonal frequency division multiplexing OFDM symbols and N frequency domain resource units, the N frequency domain resource units comprise P first frequency domain resource units and Q second frequency domain resource units, the first frequency domain resource units are used for bearing data signals, the second frequency domain resource units are used for bearing energy signals, each first frequency domain resource unit in the P first frequency domain resource units bears one or more first modulation symbols, each second frequency domain resource unit in the Q second frequency domain resource units bears one or more second modulation symbols, constellation points corresponding to the first modulation symbols are constellation points in a first constellation diagram, constellation points corresponding to the second modulation symbols are constellation points in a second constellation diagram, the distance between any constellation point in the second constellation diagram and any constellation point in the first constellation diagram is larger than or equal to a first constellation point, the constellation point in the second constellation diagram is larger than or equal to a first integer, the constellation point in the Q second constellation diagram is smaller than the first constellation point, the constellation point is smaller than the first constellation point is equal to the first constellation point, the Q is smaller than the first time domain, and the Q is smaller than the positive time domain. Based on the above scheme, the constellation diagram for