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WO-2025246442-A9 - COMMUNICATION METHOD AND APPARATUS

WO2025246442A9WO 2025246442 A9WO2025246442 A9WO 2025246442A9WO-2025246442-A9

Abstract

A communication method and apparatus. A terminal determines a first transmission parameter, and the terminal supports the first transmission parameter and a second transmission parameter, wherein the first transmission parameter includes one or more of a first maximum transmission power, a first transmission waveform, a first transmission link, and a first link indicator; the second transmission parameter includes one or more of a second maximum transmission power, a second transmission waveform, a second transmission link, and a second link indicator; and at least one of the first transmission parameters is different from at least one of the second transmission parameters. The terminal sends a first uplink signal on the basis of the first transmission parameter. The terminal supports multiple sets of transmission parameters, so that during signal transmission, corresponding transmission parameters can be selected from among the multiple sets of transmission parameters, and the selected transmission parameters can meet corresponding signal requirements. Moreover, by configuring multiple sets of transmission parameters, the signal transmission process of a terminal apparatus is more flexible.

Inventors

  • GUAN, Lei
  • HUANG, Can
  • XUE, LIXIA

Assignees

  • 华为技术有限公司

Dates

Publication Date
20260507
Application Date
20250211
Priority Date
20240525

Claims (20)

  1. A communication method, characterized in that the method includes: A first transmission parameter is determined, wherein the terminal supports the first transmission parameter and a second transmission parameter, wherein the first transmission parameter includes one or more of a first maximum transmission power, a first transmission waveform, a first transmission link, or a first link indicator, and the second transmission parameter includes one or more of a second maximum transmission power, a second transmission waveform, a second transmission link, or a second link indicator, wherein at least one of the first transmission parameters is different from at least one of the second transmission parameters. The first uplink signal is sent according to the first transmission parameters.
  2. The method according to claim 1, characterized in that, The first maximum transmit power is the maximum transmit power corresponding to the first power category. The maximum transmit power corresponding to the first power category is less than the maximum transmit power corresponding to the second power category. The first power category corresponds to the first transmit parameter, the second power category corresponds to the second transmit parameter, and the maximum transmit power corresponding to the second power category is 23dBm, 26dBm, or 29dBm.
  3. The method according to claim 2 is characterized in that the first maximum transmission power is 0dBm, 10dBm or 15dBm.
  4. The method according to claim 1, characterized in that, The first maximum transmit power is determined based on a first value and the maximum transmit power corresponding to the second power category, wherein the maximum transmit power corresponding to the second power category is 23dBm, 26dBm or 29dBm.
  5. The method according to any one of claims 1 to 4, characterized in that, The first transmitted waveform is a single-carrier frequency-domain equalized waveform; or, The first transmitted waveform is a single-carrier modulated symbol waveform; or, The first transmitted waveform is a minimum frequency shift keying (MSK) waveform; or, The first transmitted waveform is a Gaussian minimum frequency shift keying (GMSK) waveform.
  6. The method according to any one of claims 1 to 5, characterized in that, The power consumption of the first transmission link is lower than that of the second transmission link; and/or, The first transmission link includes fewer types of devices than the second transmission link.
  7. The method according to any one of claims 1 to 6 is characterized in that the limitation of the first link index on the transmission link is less than the limitation of the second link index on the transmission link.
  8. The method according to any one of claims 1 to 7, characterized in that the method further comprises: Determine first information, which is used to indicate the resources corresponding to the first transmission parameters, and the resources are used to transmit the first uplink signal; and/or, Determine the second information, which is used to indicate the resources corresponding to the second transmission parameters.
  9. The method according to any one of claims 1 to 8, characterized in that the method further comprises: Send uplink reference signal; Receive third information, which is used to indicate that an uplink signal is sent using the first transmission parameters.
  10. The method according to claim 9, characterized in that, before sending the uplink reference signal, the method further includes: Receive fourth information, the fourth information being used to indicate the transmit power of the uplink reference signal; or, A fourth message is sent, which indicates the transmit power of the uplink reference signal.
  11. The method according to claim 9 or 10 is characterized in that the third information is further used to schedule the first uplink signal.
  12. The method according to any one of claims 1 to 8, characterized in that the method further comprises: Send a fifth message, which indicates that the terminal expects to send an uplink signal using the first transmission parameters, or the fifth message indicates the first parameter.
  13. The method according to claim 12, wherein the first parameter includes path loss and/or power margin, the power margin being used to indicate the difference between a reference transmit power and a maximum transmit power.
  14. The method according to claim 12 or 13, characterized in that sending the fifth information includes: The fifth message is sent periodically; or, If the first condition is met, send the fifth message.
  15. The method according to claim 14, wherein the first condition includes one or more of the following: The reference transmit power is less than or equal to the first threshold; or, The power margin is greater than or equal to the second threshold; or, Road loss is less than or equal to the third threshold; or, The first distance is less than or equal to the fourth threshold, whereby the first distance indicates the distance between the terminal and the network device.
  16. A communication method, characterized in that the method includes: Send a third message, which corresponds to a first transmission parameter or a second transmission parameter. The first transmission parameter includes one or more of a first maximum transmission power, a first transmission waveform, a first transmission link, or a first link indicator. The second transmission parameter includes one or more of a second maximum transmission power, a second transmission waveform, a second transmission link, or a second link indicator. At least one of the first transmission parameters is different from at least one of the second transmission parameters. The receiving terminal sends a first uplink signal using the first transmission parameters or the second transmission parameters.
  17. The method according to claim 16, characterized in that, The first maximum transmit power is the maximum transmit power corresponding to the first power category. The maximum transmit power corresponding to the first power category is less than the maximum transmit power corresponding to the second power category. The first power category corresponds to the first transmit parameter, the second power category corresponds to the second transmit parameter, and the maximum transmit power corresponding to the second power category is 23dBm, 26dBm, or 29dBm.
  18. The method according to claim 17 is characterized in that the first maximum transmit power is 0dBm, 10dBm or 15dBm.
  19. The method according to claim 16, characterized in that, The first maximum transmit power is determined based on a first value and the maximum transmit power corresponding to the second power category, wherein the maximum transmit power corresponding to the second power category is 23dBm, 26dBm or 29dBm.
  20. The method according to any one of claims 16 to 19, characterized in that, The first transmitted waveform is a single-carrier frequency-domain equalized waveform; or, The first transmitted waveform is a single-carrier modulated symbol waveform; or, The first transmitted waveform is an MSK waveform; or, The first transmitted waveform is a GMSK waveform.

Description

A communication method and apparatus Cross-reference of related applications This application claims priority to Chinese Patent Application No. 202410662316.0, filed on May 25, 2024, entitled "A Communication Method and Apparatus", the entire contents of which are incorporated herein by reference. Technical Field This application relates to the field of communication technology, and in particular to a communication method and apparatus. Background Technology When a 5G user equipment (UE) performs uplink transmission, it typically transmits signals through a transmitter within the UE. Different signals may have different requirements for transmission parameters, but the UE's transmitter processes different signals in the same way, which cannot meet the needs of different signals. Summary of the Invention This application provides a communication method and apparatus for meeting the needs of different signals by using different transmission parameters. Firstly, a first communication method is provided, which can be applied to a terminal-side device, also referred to as a terminal device. The terminal device is, for example, a terminal equipment, or other equipment including terminal equipment functions, or a circuit, or a system-on-a-chip (or, a chip, such as a modem chip, also known as a baseband chip, or a system-on-a-chip (SoC) chip or system-in-package (SIP) chip containing a modem core) or other functional module, which is capable of implementing the functions of the terminal equipment, and is, for example, disposed in the terminal equipment. The method includes: determining first transmission parameters, wherein the terminal supports the first transmission parameters and second transmission parameters, wherein the first transmission parameters include one or more of a first maximum transmission power, a first transmission waveform, a first transmission link, or a first link indicator, and the second transmission parameters include one or more of a second maximum transmission power, a second transmission waveform, a second transmission link, or a second link indicator, wherein at least one of the first transmission parameters is different from at least one of the second transmission parameters; and transmitting a first uplink signal according to the first transmission parameters. In this embodiment, the terminal device can support multiple sets of transmission parameters, such as a first transmission parameter and a second transmission parameter. This allows the device to select the appropriate transmission parameter from these multiple sets when transmitting a signal, ensuring that the selected parameter meets the requirements of the corresponding signal. Furthermore, the use of multiple transmission parameters makes the transmission process of the terminal device more flexible. In one optional implementation, the first maximum transmit power is the maximum transmit power corresponding to a first power category, which is less than the maximum transmit power corresponding to a second power category. The first power category corresponds to the first transmit parameter, and the second power category corresponds to the second transmit parameter. The maximum transmit power corresponding to the second power category is 23dBm, 26dBm, or 29dBm. The first power category is, for example, the power category defined in the embodiments of this application. By defining a new power category to achieve the first maximum transmit power, the terminal device does not need to perform additional calculations, thus simplifying the implementation of the terminal device. In one alternative implementation, the first maximum transmit power is 0 dBm, 10 dBm, or 15 dBm. Alternatively, the first maximum transmit power may be any other value less than the maximum transmit power corresponding to the second power category; there is no limitation on this. In one alternative implementation, the first maximum transmit power is determined based on a first value and the maximum transmit power corresponding to a second power category, wherein the maximum transmit power corresponding to the second power category is 23dBm, 26dBm, or 29dBm. In this approach, it is not necessary to define a new power category; instead, the first maximum transmit power can be determined based on an existing power category (e.g., the first power category), which facilitates compatibility with existing technologies. In one optional implementation, the first transmitted waveform is a single-carrier frequency-domain equalized waveform; or, the first transmitted waveform is a single-carrier modulation symbol waveform; or, the first transmitted waveform is an MSK waveform; or, the first transmitted waveform is a GMSK waveform. The first transmitted waveform can be a single-carrier waveform, which has a low PAPR, which is beneficial for improving the efficiency of the power amplifier of the terminal device and also helps to suppress waveform nonlinearity. In one option