Communication method and apparatus

Abstract

A communication method and an apparatus. A terminal sends a first signal by means of a first transmission mode. The terminal supports the first transmission mode and a second transmission mode, wherein the first transmission mode and the second transmission mode are different. The power consumption of the terminal in the first transmission mode is lower than the power consumption of the terminal in the second transmission mode. The terminal can support a plurality of transmission modes, and when a signal is to be transmitted, a corresponding transmission mode can be selected from among the plurality of transmission modes, so that the selected transmission mode can satisfy the requirements of the corresponding signal. Moreover, the setting of the plurality of transmission modes makes a transmission process of the terminal more flexible. In addition, the power consumption corresponding to the first transmission mode is small, thereby facilitating reduction of the uplink transmission power consumption of the terminal.

Description

A communication method and apparatus

[0001] Cross-reference to related applications

[0002] This application claims priority to Chinese Patent Application No. 202410672030.0, filed on May 25, 2024, entitled "A Communication Method and Apparatus", the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of communication technology, and in particular to a communication method and apparatus. Background Technology

[0004] When performing uplink transmission, fifth-generation (5G) user equipment (UE) typically transmits signals through its internal transmitter. Different signals may have different requirements for transmission modes, but the UE's transmitter processes different signals in the same way, which cannot meet the needs of different signals. Summary of the Invention

[0005] This application provides a communication method and apparatus for meeting the needs of different signals through different transmission modes.

[0006] Firstly, a first communication method is provided, which can be applied to a terminal-side device, also referred to as a terminal device. This 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 containing a modem core, or a system-in-package (SIP) chip) or other functional module, which is capable of implementing the functions of the terminal equipment, and is, for example, disposed within the terminal equipment. The method includes: transmitting a first signal through a first transmission mode, wherein the terminal supports the first transmission mode and a second transmission mode, the first transmission mode and the second transmission mode being different, and the power consumption of the terminal in the first transmission mode being lower than the power consumption of the terminal in the second transmission mode.

[0007] In this embodiment, the terminal device can support multiple transmission modes, such as a first transmission mode and a second transmission mode. This allows it to select the appropriate transmission mode from among these modes when transmitting signals, ensuring that the selected mode meets the requirements of the corresponding signal. Furthermore, the availability of multiple transmission modes makes the transmission process of the terminal device more flexible. Additionally, the first transmission mode consumes less power, which helps reduce the uplink transmission power consumption of the terminal device.

[0008] In one optional implementation, the first transmission mode satisfies one or more of the following: a first maximum transmission power is less than a first threshold, where the first maximum transmission power is the maximum transmission power corresponding to the first transmission mode; the accuracy of the corresponding crystal oscillator is less than or equal to a second threshold; the transmission link corresponding to the first transmission mode does not include a DPD module and / or an IQMC module; the supported modulation order is less than or equal to the modulation order corresponding to 16QAM, or less than or equal to the modulation order corresponding to 64QAM; or, it corresponds to a single-carrier waveform. The first maximum transmission power corresponding to the first transmission mode can be relatively small, thereby reducing the power consumption of the power amplifier corresponding to the first transmission mode, and thus reducing uplink transmission power consumption; the first transmission mode may also satisfy one or more of the following: the accuracy of the corresponding crystal oscillator is low, it does not include modules with high complexity, it supports a low modulation order, or, it corresponds to a single-carrier waveform. These characteristics are beneficial for reducing the power consumption of the transmission link corresponding to the first transmission mode and / or for improving the efficiency of the power amplifier corresponding to the first transmission mode, thereby reducing uplink transmission power consumption.

[0009] In one alternative implementation, the first threshold is less than or equal to 23 dBm. Alternatively, the first value can be other values, and there is no limitation thereto.

[0010] In one alternative implementation, the first maximum transmit power is 10 dBm. Alternatively, the first maximum transmit power can be any other value less than the first threshold, and there is no limitation thereto.

[0011] In one optional implementation, the first transmission mode corresponds to a first power category, and the first power category corresponds to a first maximum transmission power. 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 transmission power, the terminal device does not need to perform additional calculations, thus simplifying the implementation of the terminal device.

[0012] In one optional implementation, the second transmission mode satisfies one or more of the following: the second maximum transmission power is greater than or equal to the first threshold, the second maximum transmission power being the maximum transmission power corresponding to the second transmission mode; the accuracy of the corresponding crystal oscillator is higher than the second threshold; the transmission link corresponding to the second transmission mode includes a DPD module and / or an IQMC module; the supported modulation order is greater than the modulation order corresponding to 16QAM, or greater than the modulation order corresponding to 64QAM; or, it corresponds to a DFT-s-OFDM waveform, or a CP-OFDM waveform. Optionally, the first transmission mode and the second transmission mode may satisfy one or more of the following: the first maximum transmission power is less than the second maximum transmission power; the accuracy of the crystal oscillator corresponding to the first transmission mode is lower than the accuracy of the crystal oscillator corresponding to the second transmission mode; the transmission link corresponding to the first transmission mode does not include modules with high complexity (such as DPD modules and / or IQMC modules, etc.), and the transmission link corresponding to the second transmission mode does not include modules with high complexity; the modulation order supported by the first transmission mode is lower than the modulation order supported by the second transmission mode, for example, the highest modulation order supported by the first transmission mode is lower than the highest modulation order supported by the second transmission mode, or the highest modulation order supported by the first transmission mode is lower than the lowest modulation order supported by the second transmission mode; the first transmission mode corresponds to a single-carrier waveform, and the second transmission mode corresponds to a non-single-carrier waveform. As can be seen from the above description, the transmission power consumption corresponding to the first transmission mode can be less than the transmission power consumption corresponding to the second transmission mode. If the UE selects the first transmission mode to send uplink signals, it is beneficial to reduce uplink transmission power consumption.

[0013] In one alternative implementation, the limitations imposed on the transmission link by the indicators of the first transmission mode are less than the limitations imposed on the transmission link by the indicators of the second transmission mode. Alternatively, it can be understood that the first link indicators are more lenient than the second link indicators. Because the first link indicators are more lenient, it is beneficial to reduce transmission link power consumption, thereby reducing uplink transmission power consumption.

[0014] In one optional implementation, the metrics for the first transmission mode include one or more of frequency error, in-band metrics, or out-of-band metrics. The metrics for the second transmission mode may also include one or more of frequency error, in-band metrics, or out-of-band metrics. The metrics for the first transmission mode and the second transmission mode may be exactly the same, partially the same, or completely different.

[0015] In one optional implementation, the frequency error corresponding to the first transmission mode is greater than the frequency error corresponding to the second transmission mode. Optionally, the frequency error corresponding to the second transmission mode is ±0.1 PPM; the frequency error corresponding to the first transmission mode is ±1 PPM, ±5 PPM, ±10 PPM, or ±20 PPM. The first transmission mode has a lower frequency error requirement than the second transmission mode, making the first transmission mode more energy-efficient.

[0016] In one optional implementation, the first transmission mode corresponds to an RF modulation transmitter. Optionally, the RF modulation transmitter includes a PSK modulation transmitter, an FSK modulation transmitter, or an OOK modulation transmitter. When the terminal device transmits an uplink signal using the first transmission mode, it can modulate the uplink signal on the radio frequency, thereby saving a significant amount of baseband processing and reducing uplink transmission power consumption.

[0017] In one optional implementation, the time-domain symbol length of the first signal is equal to the symbol length of an orthogonal frequency division multiplexing (OFDM) signal. Where N is a positive integer. For example, if the first transmitter is an RF modulation transmitter and the network device uses a traditional OFDM receiver, then the time-domain symbol length of the first signal can be specified as a fraction of the OFDM symbol length. This enables network devices to perform demodulation and other processing on the first signal.

[0018] Secondly, a second communication method is provided, which can be applied to a network-side device, also referred to as a network device. This network device is, for example, a network equipment, or other equipment including network equipment functions, or a circuit, or a system-on-a-chip (or chip), or other functional module capable of implementing the functions of the network equipment, and is, for example, disposed within the network equipment. The network equipment includes, for example, core network equipment and / or access network equipment. The network equipment is, for example, a serving network equipment for a terminal device. The method includes: receiving a first signal, the first signal corresponding to a first transmission mode, wherein the terminal supports the first transmission mode and a second transmission mode, the first transmission mode and the second transmission mode being different, and the power consumption of the terminal in the first transmission mode being lower than the power consumption of the terminal in the second transmission mode.

[0019] In one optional implementation, the first transmission mode satisfies one or more of the following: the first maximum transmission power is less than a first threshold, the first maximum transmission power being the maximum transmission power corresponding to the first transmission mode; the accuracy of the corresponding crystal oscillator is less than or equal to a second threshold; the transmission link corresponding to the first transmission mode does not include a DPD module and / or an IQMC module; the supported modulation order is less than or equal to the modulation order corresponding to 16QAM, or less than or equal to the modulation order corresponding to 64QAM; or, it corresponds to a single-carrier waveform.

[0020] In one alternative implementation, the first threshold is less than or equal to 23 dBm.

[0021] In one alternative implementation, the first maximum transmit power is 10 dBm.

[0022] In one alternative implementation, the first transmission mode corresponds to a first power category, and the first power category corresponds to a first maximum transmission power.

[0023] In one optional implementation, the second transmission mode satisfies one or more of the following: the second maximum transmission power is greater than or equal to the first threshold, the second maximum transmission power being the maximum transmission power corresponding to the second transmission mode; the accuracy of the corresponding crystal oscillator is higher than the second threshold; the transmission link corresponding to the second transmission mode includes a DPD module and / or an IQMC module; the supported modulation order is greater than the modulation order corresponding to 16QAM, or greater than the modulation order corresponding to 64QAM; or, it corresponds to a DFT-s-OFDM waveform, or a CP-OFDM waveform.

[0024] In one alternative implementation, the limitations imposed on the transmission link by the indicators of the first transmission mode are less than the limitations imposed on the transmission link by the indicators of the second transmission mode.

[0025] In one alternative implementation, the metrics for the first transmission mode include one or more of frequency error, in-band metrics, or out-of-band metrics.

[0026] In one optional implementation, the frequency error corresponding to the first transmission mode is greater than the frequency error corresponding to the second transmission mode. Optionally, the frequency error corresponding to the second transmission mode is ±0.1 PPM; the frequency error corresponding to the first transmission mode is ±1 PPM, ±5 PPM, ±10 PPM, or ±20 PPM.

[0027] In one optional implementation, the first transmission mode corresponds to an radio frequency modulation transmitter. Optionally, the radio frequency modulation transmitter includes a PSK modulation transmitter, an FSK modulation transmitter, or an OOK modulation transmitter.

[0028] In one optional implementation, the time-domain symbol length of the first signal is equal to the OFDM symbol length. Where N is a positive integer.

[0029] In one optional implementation, receiving the first signal includes receiving a second signal, the second signal comprising the first signal and a third signal, the third signal corresponding to the second transmission mode. The network device may receive multiple signals, which may originate from multiple terminal devices; for example, these multiple signals may be collectively referred to as the second signal. The second signal may include the first signal, and may also include a third signal corresponding to the second transmission mode. The transmitter of the third signal may be the same as or different from the transmitter of the first signal.

[0030] In an optional implementation, the method further includes: removing the first signal from the second signal to obtain the third signal; and demodulating the third signal. The first signal corresponds to a first transmission mode. Compared to the second transmission mode, the signal transmitted using the first transmission mode has lower quality and may interfere with other signals. Therefore, the network device can remove the first signal from the second signal before demodulating the remaining signal, thereby reducing the interference caused by the first signal to other signals.

[0031] In an optional implementation, the method further includes: determining that the first signal corresponds to the first transmission mode based on a frequency offset of the first signal being less than or equal to a fourth threshold; or receiving first information from a first terminal, the first information indicating that a signal from the first terminal corresponds to the first transmission mode, wherein the first signal originates from the first terminal; or determining that the first signal is carried on a first resource, the first resource corresponding to the first transmission mode. The network device can determine which signals in the second signal correspond to the first transmission mode according to a corresponding judgment method, thereby removing signals corresponding to the first transmission mode from the received signals.

[0032] In one optional implementation, the second signal further includes a fourth signal corresponding to the first transmission mode. Removing the first signal from the second signal to obtain the third signal involves sequentially removing the first signal and the fourth signal from the second signal in descending order of their received energy. The higher the received energy of the signal corresponding to the first transmission mode, the greater the potential interference it may cause to other signals. Therefore, the network device can preferentially remove signals with higher received energy from the second signal to achieve higher interference reduction performance.

[0033] For the technical effects of the second aspect or other alternative implementations of the second aspect, please refer to the description of the technical effects of the first aspect or corresponding implementations.

[0034] Thirdly, a third communication method is provided, which can be applied to a terminal-side device, also referred to as a terminal device. A description of this terminal device is provided in the first aspect. The method includes: receiving third information, the third information indicating a first parameter; and adjusting the terminal's transmission mode on a first frequency domain resource according to the first parameter.

[0035] In this embodiment, the terminal device does not need to adjust its transmission mode based on the measurement of the downlink reference signal. Instead, it can adjust the transmission mode based on third information from the network device, which saves the measurement power consumption of the terminal device. Furthermore, since the measurement adjustment amount is indicated by the network device, the adjustment result of the terminal device can be made consistent with the expectations of the network device, thereby allowing the network device to better schedule the terminal device.

[0036] In one optional implementation, the first parameter includes frequency offset information of the signal. Alternatively, the first parameter may also include other parameters, such as time-domain offset information of the signal, as long as the terminal device can adjust the transmission mode according to the first parameter, and there is no limitation on the content of the first parameter.

[0037] In one optional implementation, the first parameter is used to adjust the second parameter, which is a parameter corresponding to the transmission mode, and the third information is carried in a second frequency domain resource. The first frequency domain resource is the same as the second frequency domain resource; or, the first frequency domain resource is different from the second frequency domain resource. The frequency domain resource corresponding to the transmission mode and the frequency domain resource containing the information used to adjust the transmission mode can be the same or different, making the adjustment process more flexible.

[0038] In one optional implementation, the first frequency domain resource and the second frequency domain resource are different, wherein the first frequency domain resource belongs to a low-frequency band and the second frequency domain resource belongs to a high-frequency band; or, the first frequency domain resource belongs to a high-frequency band and the second frequency domain resource belongs to a low-frequency band; or, the first frequency domain resource and the second frequency domain resource belong to the same frequency band, and the first frequency domain resource and the second frequency domain resource are different. For example, if the first frequency domain resource and the second frequency domain resource are located in different frequency bands, then these two frequency domain resources are considered different; or, if the first frequency domain resource and the second frequency domain resource are located in the same frequency band, but these two frequency domain resources are different (e.g., these two frequency domain resources do not overlap), then these two frequency domain resources are also considered different.

[0039] In one optional implementation, the first frequency domain resource and the second frequency domain resource belong to the same frequency band, and the first frequency domain resource is different from the second frequency domain resource, wherein the first frequency domain resource does not have a corresponding downlink frequency unit. For example, in a super uplink scenario, the first frequency domain resource may not have a corresponding downlink frequency unit, so a second frequency domain resource located in the same frequency band as the first frequency domain resource can be used to indicate the first parameter.

[0040] In one optional implementation, the terminal's transmission mode includes a first transmission mode and a second transmission mode. Adjusting the terminal's transmission mode according to the first parameter includes adjusting either the first transmission mode or the second transmission mode according to the first parameter. For example, the terminal device can adjust the parameters corresponding to the first transmission mode or the parameters corresponding to the second transmission mode according to the first parameter.

[0041] In one optional implementation, the first transmission mode satisfies one or more of the following: the first maximum transmission power is less than a first threshold, the first maximum transmission power being the maximum transmission power corresponding to the first transmission mode; the accuracy of the included crystal oscillator is less than or equal to a second threshold; the transmission link corresponding to the first transmission mode does not include a DPD module and / or an IQMC module; the supported modulation order is less than or equal to the modulation order corresponding to 16QAM, or less than or equal to the modulation order corresponding to 64QAM; or, corresponds to a single-carrier waveform.

[0042] In one alternative implementation, the first threshold is less than or equal to 23 dBm.

[0043] In one alternative implementation, the first maximum transmit power is 10 dBm.

[0044] In one alternative implementation, the first transmission mode corresponds to a first power category, and the first power category corresponds to a first maximum transmission power.

[0045] In one optional implementation, the second transmission mode satisfies one or more of the following: the second maximum transmission power is greater than or equal to the first threshold, the second maximum transmission power being the maximum transmission power corresponding to the second transmission mode; the accuracy of the included crystal oscillator is higher than the second threshold; the transmission link corresponding to the second transmission mode includes a DPD module and / or an IQMC module; the supported modulation order is greater than the modulation order corresponding to 16QAM, or greater than the modulation order corresponding to 64QAM; or, corresponds to a DFT-s-OFDM waveform, or a CP-OFDM waveform.

[0046] In one alternative implementation, the limitations imposed on the transmission link by the indicators of the first transmission mode are less than the limitations imposed on the transmission link by the indicators of the second transmission mode.

[0047] In one alternative implementation, the metrics for the first transmission mode include one or more of frequency error, in-band metrics, or out-of-band metrics.

[0048] In one optional implementation, the frequency error corresponding to the first transmission mode is greater than the frequency error corresponding to the second transmission mode. Optionally, the frequency error corresponding to the second transmission mode is ±0.1 PPM; the frequency error corresponding to the first transmission mode is ±1 PPM, ±5 PPM, ±10 PPM, or ±20 PPM.

[0049] In one optional implementation, the first transmission mode corresponds to an radio frequency modulation transmitter. Optionally, the radio frequency modulation transmitter includes a PSK modulation transmitter, an FSK modulation transmitter, or an OOK modulation transmitter.

[0050] In one optional implementation, the time-domain symbol length of the first signal is equal to the OFDM symbol length. Where N is a positive integer.

[0051] Regarding the technical effects of the optional implementations of the third aspect, refer to the description of the technical effects of the first aspect or corresponding implementations, and / or refer to the description of the technical effects of the second aspect or corresponding implementations.

[0052] Fourthly, a fourth communication method is provided, which can be applied to a network-side device, also referred to as a network device for example. A description of this network device can be found in the second aspect. The method includes: receiving a first signal; estimating a first parameter based on the first signal, the first parameter being used to adjust the transmission mode of a terminal on a first frequency domain resource; and transmitting third information, the third information being used to indicate the first parameter.

[0053] In one alternative implementation, the first parameter includes frequency offset information of the signal.

[0054] In one optional implementation, the first parameter is used to adjust the second parameter, which is a parameter corresponding to the transmission mode, and the third information is carried in the second frequency domain resource, wherein the first frequency domain resource is the same as the second frequency domain resource; or, the first frequency domain resource is different from the second frequency domain resource.

[0055] In one optional implementation, the first frequency domain resource is different from the second frequency domain resource, wherein the first frequency domain resource belongs to a low frequency band and the second frequency domain resource belongs to a high frequency band; or, the first frequency domain resource belongs to a high frequency band and the second frequency domain resource belongs to a low frequency band; or, the first frequency domain resource and the second frequency domain resource belong to the same frequency band, and the first frequency domain resource is different from the second frequency domain resource.

[0056] In one optional implementation, the first frequency domain resource and the second frequency domain resource belong to the same frequency band, and the first frequency domain resource is different from the second frequency domain resource, wherein the first frequency domain resource does not have a corresponding downlink frequency unit.

[0057] In one optional implementation, the terminal's transmission mode includes a first transmission mode and a second transmission mode. Adjusting the terminal's transmission mode according to the first parameter includes: adjusting the first transmission mode or the second transmission mode according to the first parameter.

[0058] In one optional implementation, the first transmission mode satisfies one or more of the following: the first maximum transmission power is less than a first threshold, the first maximum transmission power being the maximum transmission power corresponding to the first transmission mode; the accuracy of the included crystal oscillator is less than or equal to a second threshold; the transmission link corresponding to the first transmission mode does not include a DPD module and / or an IQMC module; the supported modulation order is less than or equal to the modulation order corresponding to 16QAM, or less than or equal to the modulation order corresponding to 64QAM; or, corresponds to a single-carrier waveform.

[0059] In one alternative implementation, the first threshold is less than or equal to 23 dBm.

[0060] In one alternative implementation, the first maximum transmit power is 10 dBm.

[0061] In one alternative implementation, the first transmission mode corresponds to a first power category, and the first power category corresponds to a first maximum transmission power.

[0062] In one optional implementation, the second transmission mode satisfies one or more of the following: the second maximum transmission power is greater than or equal to the first threshold, the second maximum transmission power being the maximum transmission power corresponding to the second transmission mode; the accuracy of the included crystal oscillator is higher than the second threshold; the transmission link corresponding to the second transmission mode includes a DPD module and / or an IQMC module; the supported modulation order is greater than the modulation order corresponding to 16QAM, or greater than the modulation order corresponding to 64QAM; or, corresponds to a DFT-s-OFDM waveform, or a CP-OFDM waveform.

[0063] In one alternative implementation, the limitations imposed on the transmission link by the indicators of the first transmission mode are less than the limitations imposed on the transmission link by the indicators of the second transmission mode.

[0064] In one alternative implementation, the metrics for the first transmission mode include one or more of frequency error, in-band metrics, or out-of-band metrics.

[0065] In one optional implementation, the frequency error corresponding to the first transmission mode is greater than the frequency error corresponding to the second transmission mode. Optionally, the frequency error corresponding to the second transmission mode is ±0.1 PPM; the frequency error corresponding to the first transmission mode is ±1 PPM, ±5 PPM, ±10 PPM, or ±20 PPM.

[0066] In one optional implementation, the first transmission mode corresponds to an radio frequency modulation transmitter. Optionally, the radio frequency modulation transmitter includes a PSK modulation transmitter, an FSK modulation transmitter, or an OOK modulation transmitter.

[0067] In one optional implementation, the time-domain symbol length of the first signal is equal to the OFDM symbol length. Where N is a positive integer.

[0068] Regarding the technical effects of the fourth aspect or various optional implementation methods, reference may be made to one or more of the following: a description of the technical effects of the first aspect or corresponding implementation method, a description of the technical effects of the second aspect or corresponding implementation method, or a description of the technical effects of the third aspect or corresponding implementation method.

[0069] Fifthly, a communication device is provided. The communication device can be a terminal device as described in any of the first to fourth aspects above. The communication device possesses the functions of the aforementioned terminal device. For example, the communication device has the functions described in any of the first to fourth aspects above. For instance, the communication device includes modules, units, or means corresponding to the operations described in any of the first to fourth aspects above. These modules, units, or means can be implemented in software, hardware, or a combination of software and hardware. The communication device is, for example, a terminal device, or other device including the functions of a terminal device, or a chip system (or chip or circuit) or other functional module capable of implementing the functions of a terminal device. This chip system or functional module is, for example, disposed in a terminal device. In one optional implementation, the communication device includes a baseband device and a radio frequency device. In another optional implementation, the communication device includes a processing unit (sometimes also called a processing module) and a transceiver unit (sometimes also called a transceiver module). A transceiver unit can perform both sending and receiving functions. When the transceiver unit performs the sending function, it can be called a sending unit (sometimes also called a sending module), and when it performs the receiving function, it can be called a receiving unit (sometimes also called a receiving module). The sending unit and the receiving unit can be the same functional module, which is called the transceiver unit and can perform both sending and receiving functions; or, the sending unit and the receiving unit can be different functional modules, and the transceiver unit is a collective term for these functional modules.

[0070] In one optional implementation, the transceiver unit (or the transmitting unit) is configured to transmit a first signal through a first transmission mode, wherein the terminal supports the first transmission mode and a second transmission mode, the first transmission mode and the second transmission mode are different, and the power consumption of the terminal in the first transmission mode is lower than the power consumption of the terminal in the second transmission mode.

[0071] In one optional implementation, the transceiver unit (or the transmitting unit) is configured to receive third information, the third information being used to indicate a first parameter; the processing unit is configured to adjust the terminal's transmission mode on a first frequency domain resource according to the first parameter.

[0072] In an alternative embodiment, the communication device further includes a storage unit (sometimes also called a storage module), and the processing unit is configured to couple with the storage unit and execute programs or instructions in the storage unit to enable the communication device to perform the functions of the terminal device described in any of the first to fourth aspects above.

[0073] Sixthly, a communication device is provided. The communication device can be a network device as described in any of the first to fourth aspects above. The communication device possesses the functions of the aforementioned network device. For example, the communication device has the functions described in any of the first to fourth aspects above; for example, the communication device includes modules, units, or means corresponding to the operations described in any of the first to fourth aspects above. These modules, units, or means can be implemented in software, hardware, or a combination of software and hardware. The communication device is, for example, a network device, or other device including network device functions, or a chip system (or chip or circuit) or other functional module capable of implementing the functions of a network device, and is, for example, disposed within a network device. In one optional implementation, the communication device includes a baseband device and a radio frequency device. In another optional implementation, the communication device includes a processing unit (sometimes also called a processing module) and a transceiver unit (sometimes also called a transceiver module). For details on the implementation of the transceiver unit, please refer to the relevant description in the fifth aspect.

[0074] In one optional implementation, the transceiver unit (or the receiving unit) is configured to receive a first signal, the first signal corresponding to a first transmission mode, wherein the terminal supports the first transmission mode and a second transmission mode, the first transmission mode and the second transmission mode are different, and the power consumption of the terminal in the first transmission mode is lower than the power consumption of the terminal in the second transmission mode.

[0075] In one optional implementation, the transceiver unit (or the receiving unit) is configured to receive a first signal, estimate a first parameter based on the first signal, the first parameter being used to adjust the transmission mode of the terminal on a first frequency domain resource; the transceiver unit (or the sending unit) is configured to send third information, the third information being used to indicate the first parameter.

[0076] In an alternative embodiment, the communication device further includes a storage unit (sometimes also called a storage module), and the processing unit is configured to couple with the storage unit and execute programs or instructions in the storage unit to enable the communication device to perform the functions of the network device described in any of the first to fourth aspects above.

[0077] A seventh aspect provides a communication device comprising a memory and one or more processors. The memory stores part or all of a computer program or instructions necessary for implementing the functions described in the first or fourth aspect. The one or more processors are executable to carry out the computer program or instructions, which, when executed, cause the communication device to implement the methods in any possible design or implementation of the first or fourth aspect.

[0078] In one possible design, the communication device may further include an interface circuit, wherein the processor is used to communicate with other devices or components through the interface circuit.

[0079] In one possible design, the communication device may also include the memory.

[0080] The aforementioned communication device may be a terminal, a communication module in a terminal, or a chip in a terminal that is responsible for communication functions, such as a modem chip (also known as a baseband chip) or a SoC or SIP chip containing a modem module.

[0081] Eighthly, a communication device is provided, the communication device comprising a memory and one or more processors. The memory is used to store part or all of a computer program or instructions necessary for implementing the functions involved in the first or fourth aspect described above. The one or more processors are capable of executing the computer program or instructions, such that when the computer program or instructions are executed, the communication device implements the methods in any possible design or implementation of the first or fourth aspect described above.

[0082] In one possible design, the communication device may further include an interface circuit, wherein the processor is used to communicate with other devices or components through the interface circuit.

[0083] In one possible design, the communication device may also include the memory.

[0084] The aforementioned communication device may be a network device, a communication module in a network device, or a chip in a network device that is responsible for communication functions, such as a modem chip (also known as a baseband chip) or a SoC or SIP chip that contains a modem module.

[0085] A ninth aspect provides a communication system including a network-side device, wherein the network-side device is configured to perform the method performed by the network device as described in any one of the first to fourth aspects. For example, the network-side device can be implemented using the communication device described in the sixth or eighth aspect.

[0086] Optionally, the communication system further includes a terminal-side device, wherein the terminal-side device is used to perform the method executed by the terminal device as described in any of the first to fourth aspects. For example, the terminal-side device can be implemented using the communication device described in the fifth or seventh aspect.

[0087] In a tenth aspect, a computer-readable storage medium is provided for storing a computer program or instructions that, when executed, cause the methods performed by the terminal device or network device in the above aspects to be implemented.

[0088] In the eleventh aspect, a computer program product containing instructions is provided, which, when the computer program or instructions are run on a computer, enables the methods described in the above aspects to be implemented.

[0089] In a twelfth aspect, a chip system is provided, including a processor and an interface, the processor being configured to call and execute instructions from the interface to enable the chip system to implement the methods of the above aspects. Attached Figure Description

[0090] Figure 1 is a schematic diagram of a network architecture applied in an embodiment of this application;

[0091] Figure 2 is a flowchart of a communication method provided in an embodiment of this application;

[0092] Figure 3A is a schematic diagram of a transmission link corresponding to the first transmission mode in an embodiment of this application;

[0093] Figure 3B is a schematic diagram of a transmission link corresponding to the second transmission mode in an embodiment of this application;

[0094] Figure 4A is a schematic diagram of a PSK radio frequency transmitter in an embodiment of this application;

[0095] Figure 4B is a schematic diagram of an FSK radio frequency transmitter in an embodiment of this application;

[0096] Figure 4C is a schematic diagram of an OOK radio frequency transmitter in an embodiment of this application;

[0097] Figure 5A is a schematic diagram of using the first transmitter when the first condition is met in an embodiment of this application;

[0098] Figure 5B is a schematic diagram of using a second transmitter when the first condition is not met in an embodiment of this application;

[0099] Figure 6 is a flowchart of another communication method provided in an embodiment of this application;

[0100] Figure 7 is a schematic diagram of a device provided in an embodiment of this application;

[0101] Figure 8 is a schematic diagram of another device provided in an embodiment of this application. Detailed Implementation

[0102] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the embodiments of this application will be further described in detail below with reference to the accompanying drawings.

[0103] In this application embodiment, the number of nouns, unless otherwise specified, refers to "singular nouns or plural nouns," that is, "one or more." "At least one" means one or more, and "more than one" means two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists alone, A and B exist simultaneously, or B exists alone, where A and B can be singular or plural. The character " / " generally indicates that the related objects before and after are in an "or" relationship. For example, A / B means: A or B. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, or c means: a, b, c, a and b, a and c, b and c, or a and b and c, where a, b, and c can be single or multiple.

[0104] The ordinal numbers such as "first" and "second" mentioned in the embodiments of this application are used to distinguish multiple objects, and are not used to limit the size, content, order, timing, priority, or importance of the multiple objects. Furthermore, the numbering of steps in the various embodiments described in this application is only to distinguish different steps and is not used to limit the order in which the steps are performed.

[0105] The following explanations of some terms or concepts used in the embodiments of this application are provided to facilitate understanding by those skilled in the art.

[0106] In this embodiment, the terminal device is a device with wireless transceiver capabilities, which can be a fixed device, a mobile device, a handheld device (e.g., a mobile phone), a wearable device, an in-vehicle device, or a wireless device (e.g., a communication module, a modem, or a chip system, etc.) built into the aforementioned devices. The terminal device is used to connect people, objects, machines, etc., and can be widely used in various scenarios, including but not limited to the following: sensing scenarios, cellular communication, device-to-device (D2D) communication, vehicle-to-everything (V2X) communication, machine-to-machine / machine-type communications (M2M / MTC) communication, Internet of Things (IoT), virtual reality (VR), augmented reality (AR), industrial control, self-driving, remote medical care, smart grid, smart furniture, smart office, smart wearables, smart transportation, smart city, drones, robots, and indoor commercial scenarios (such as mobile phone screen mirroring, file sharing, and mobile phone to VR glasses video transmission). When the terminal equipment is applied to V2X, it can also be called a V2X device, such as a smart car, digital car, unmanned car, driverless car, pilotless car, or automobile, self-driving car, or autonomous car, pure electric vehicle (EV), hybrid electric vehicle (HEV), range-extended electric vehicle (REEV), plug-in hybrid electric vehicle (PHEV), new energy vehicle, or roadside unit (RSU). The terminal equipment can also be a device used in D2D communication, such as an electricity meter or water meter.

[0107] Furthermore, in this embodiment of the application, the terminal device can also be a terminal device in an Internet of Things (IoT) system. IoT is an important component of the future development of information technology. Its main technical feature is to connect objects to the network through communication technology, thereby realizing an intelligent network of human-machine interconnection and object-to-object interconnection.

[0108] The various terminal devices described above, if located in a vehicle (e.g., placed inside or installed inside a vehicle), can all be considered in-vehicle terminal devices, also known as on-board units (OBUs). The terminal device of this application can also be an in-vehicle module, in-vehicle component, in-vehicle chip, or in-vehicle unit built into a vehicle as one or more components or units. The vehicle can implement the methods of this application through the built-in in-vehicle module, in-vehicle component, in-vehicle chip, or in-vehicle unit.

[0109] The terminal equipment may sometimes be referred to as UE, terminal, access station, UE station, remote station, wireless communication equipment, or user equipment, etc.

[0110] In this application embodiment, the communication device used to implement the terminal device function can be a terminal device, which can be a terminal device or a device capable of supporting the terminal device to implement the function, such as a chip system. This device can be installed in the terminal device. In the technical solutions provided in this application embodiment, the terminal device is described as an example.

[0111] The network devices in this application embodiment include, for example, access network devices (or access network elements) and / or core network devices (or core network elements). The access network devices are devices with wireless transceiver capabilities, used to communicate with the terminal devices. The access network devices include, but are not limited to, base stations (base transceiver stations, BTS, Node B, evolved Node B (eNodeB) / eNB, or the next generation Node B (gNodeB) / gNB), transmission reception points (TRPs), base stations evolved from the 3rd generation partnership project (3GPP), access nodes in wireless fidelity (Wi-Fi) systems, wireless relay nodes, wireless backhaul nodes, etc. The base stations can be: macro base stations, micro base stations, pico base stations, small cells, relay stations, etc. Multiple base stations can support networks using the same access technology or networks using different access technologies. A base station can contain one or more co-located or non-co-located transmission and reception points. The access network equipment can also be a radio controller, centralized unit (CU), and / or distributed unit (DU) in a cloud radio access network (CRAN) scenario. The access network equipment can also be a server, etc. For example, the network equipment in V2X technology can be a roadside unit (RSU). The following description uses a base station as an example to illustrate the access network equipment. A base station can communicate with a terminal device, or it can communicate with a terminal device through a relay station. A terminal device can communicate with multiple base stations in different access technologies. The core network equipment is used to implement functions such as mobility management, data processing, session management, policy and billing. The names of the equipment implementing core network functions may differ in systems using different access technologies; this application does not limit this.Taking the 5th generation (5G) mobile communication technology system as an example, the core network equipment includes, for example, access and mobility management function (AMF), session management function (SMF), policy control function (PCF), or user plane function (UPF), etc.

[0112] In a CU-DU architecture, or in an open RAN (ORAN) system, access network equipment may include one or more logical network elements such as a central unit (CU), a distributed unit (DU), a CU-control plane (CP), a CU-user plane (UP), or a radio unit (RU). CUs and DUs may be separate entities or included in the same network element, such as a baseband unit (BBU). RUs may be included in radio equipment or radio units, such as remote radio units (RRUs), active antenna units (AAUs), or remote radio heads (RRHs).

[0113] In different systems, CU (or CU-CP and CU-UP), DU, or RU may have different names, but those skilled in the art will understand their meaning. For example, in an ORAN system, CU can also be called an open CU (O-CU), DU can also be called an open DU (O-DU), CU-CP can also be called an open CU-CP (O-CU-CP), CU-UP can also be called an open CU-UP (O-CU-CP), and RU can also be called an open RU (O-RU). For ease of description, this application uses CU, CU-CP, CU-UP, DU, and RU as examples in its embodiments. Any of the units among CU (or CU-CP, CU-UP), DU, and RU in the embodiments of this application can be implemented through software modules, hardware modules, or a combination of software modules and hardware modules.

[0114] The CU and DU can be configured according to the protocol layer functions of the wireless network they implement. For example, the CU can be configured to implement the functions of the Packet Data Convergence Protocol (PDCP) layer and above (such as the Radio Resource Control (RRC) layer and / or the Service Data Adaptation Protocol (SDAP) layer); the DU can be configured to implement the functions of protocol layers below the PDCP layer (such as one or more of the Radio Link Control (RLC) layer, Media Access Control (MAC) layer, or Physical (PHY) layer). As another example, the CU can be configured to implement the functions of protocol layers above the PDCP layer (such as the RRC and / or SDAP layers), and the DU can be configured to implement the functions of protocol layers below the PDCP layer (such as one or more of the RLC, MAC, or PHY layers).

[0115] The above CU and DU configurations are merely examples; the functions of the CU and DU can be configured as needed. For instance, the CU or DU can be configured to have more protocol layer functions, or only some protocol layer processing functions. For example, some RLC layer functions and protocol layer functions above the RLC layer can be placed in the CU, while the remaining RLC layer functions and protocol layer functions below the RLC layer can be placed in the DU. Furthermore, the functions of the CU or DU can be divided according to service type or other system requirements, such as by latency. Functions that require low latency can be placed in the DU, while functions that do not require low latency can be placed in the CU.

[0116] DU and RU can cooperate to implement the functions of the PHY layer. A DU can be connected to one or more RUs. The functions of DU and RU can be configured in various ways depending on the design. For example, a DU can be configured to implement baseband functions, and an RU can be configured to implement mid-RF functions. Another example is that a DU can be configured to implement higher-level functions in the PHY layer, and an RU can be configured to implement lower-level functions in the PHY layer, or to implement both lower-level and RF functions. Higher-level functions in the physical layer can include a portion of the physical layer's functions that are closer to the MAC layer, while lower-level functions in the physical layer can include another portion of the physical layer's functions that are closer to the mid-RF side.

[0117] In this application embodiment, the communication device used to implement the functions of a network device can be referred to as a network device (for example, a device used to implement the functions of an access network device is an access network device, and a device used to implement the functions of a core network device is a core network device). This network device can be a network element, a network device, or a device capable of supporting the network device or network element to implement the function, such as a chip system. This device can be installed in the network device. In the technical solutions provided in this application embodiment, the network device is described as an example of a network device.

[0118] Different signals may have different requirements for transmission modes, but the UE's transmitter processes different signals in the same way, which cannot meet the needs of different signals. Therefore, in this embodiment, the UE can support multiple transmission modes, such as a first transmission mode and a second transmission mode. This allows the UE to select the appropriate transmission mode from among these multiple modes when transmitting signals, ensuring that the selected mode meets the requirements of the corresponding signal. Furthermore, the multiple transmission modes make the UE's transmission process more flexible. Additionally, the first transmission mode has lower power consumption, which helps reduce the UE's uplink transmission power consumption.

[0119] The technical solutions provided in this application can be applied to fourth-generation (4G) systems, such as Long Term Evolution (LTE) systems, or to 5G systems, such as New Radio (NR) systems, or to next-generation mobile communication systems or other similar communication systems, such as sixth-generation (6G) systems, etc., without specific limitations. Furthermore, the technical solutions provided in this application can also be applied to D2D scenarios, such as NR-D2D scenarios, or to V2X scenarios, such as NR-V2X scenarios. For example, the technical solutions provided in this application can be used in fields such as factory manufacturing, smart homes, intelligent driving, assisted driving, intelligent connected vehicles, or indoor commercial scenarios.

[0120] Please refer to Figure 1, which is a schematic diagram of an application scenario according to an embodiment of this application. Figure 1 includes a network device and a UE, and the UE can send uplink signals to the network device.

[0121] The method provided by the embodiments of this application is described below with reference to the accompanying drawings. In various embodiments of this application, "transmission parameters" and "transmission mode" may be the same feature, and the two can be interchanged. For example, "transmission mode" described below can also be replaced by "transmission parameters"; or, "transmission mode" and "transmission parameters" can correspond one-to-one. For example, "transmission mode" described below can correspond to the corresponding "transmission parameters". For example, "first transmission mode" can be replaced by "first transmission parameter", or "first transmission mode" can correspond to "first transmission parameter"; as another example, "second transmission mode" can be replaced by "second transmission parameter", or "second transmission mode" can correspond to "second transmission parameter". Alternatively, "transmission mode" may include "transmission parameters", then "transmission mode" described below may include the corresponding "transmission parameters". For example, "first transmission mode" includes "first transmission parameter", and "second transmission mode" includes "second transmission parameter". In the description herein, "transmission mode" is used as an example. In addition, "transmission mode" may also have other names, such as "transmission method" or "transmission type", etc., and these names can be interchanged. The various embodiments of this document can be applied to the network architecture shown in Figure 1. For example, the UE described in the various embodiments of this document can be the UE in Figure 1, and the network device described in the various embodiments of this document can be the network device in Figure 1. In the accompanying drawings corresponding to the various embodiments of this document, all steps indicated by dashed lines are optional steps.

[0122] This application provides a communication method, please refer to Figure 2, which is a flowchart of the method.

[0123] S201. The UE transmits a first signal through a first transmission mode. Correspondingly, the network device receives the first signal.

[0124] The first transmission mode is one supported by the UE. Supporting the first transmission mode can be understood as follows: the UE can transmit signals according to the first transmission mode; or the transmission links included in the UE enable the UE to transmit signals according to the first transmission mode; or the UE has the ability to transmit signals according to the first transmission mode; or the hardware and / or software resources of the UE enable the UE to transmit signals according to the first transmission mode, etc. Optionally, the first transmission mode may also be called a low-power transmission mode, etc., and the name is not limited. Essentially, this application introduces a new transmission mode that is suitable for low-power transmission. By performing signal transmission through this transmission mode, the UE's transmission power consumption can be reduced.

[0125] In this application, the embodiments are described using an uplink transmission scenario as an example. Therefore, the solution provided by this application can reduce the uplink transmission power consumption of the UE. However, this application can also be applied to other transmission scenarios, where the power consumption reduction is in the corresponding transmission direction. For example, this application can also be applied to sidelink (SL) transmission scenarios, where the solution provided by this application can reduce the sidelink transmission power consumption of the UE. In the following text, the uplink scenario will be used as an example, i.e., to reduce the uplink transmission power consumption of the UE.

[0126] To facilitate understanding, before introducing the first transmission mode, we will first introduce the relevant content of UE uplink transmission power consumption.

[0127] 5G UEs consume a significant amount of power, making UE energy saving a hot topic. Currently, standard UE energy saving solutions primarily focus on reducing downlink reception power consumption, including reducing downlink reception time or using low-power receivers. However, uplink transmission power consumption is rarely discussed. The embodiments in this application aim to reduce uplink transmission power consumption of the UE.

[0128] The uplink transmit power consumption of the UE can include the power consumption of the power amplifier and the transmit link power consumption. The power consumption of the power amplifier is related to the uplink transmit power and the efficiency of the power amplifier. For example, the power consumption of the power amplifier satisfies the following relationship:

[0129] According to Formula 1, reducing the uplink transmit power can reduce the power consumption of the power amplifier; improving the efficiency of the power amplifier can also reduce the power consumption of the power amplifier.

[0130] When the uplink transmit power is high, the efficiency of the power amplifier is high, for example, about 40% to 50%; while when the uplink transmit power is low, the efficiency of the power amplifier is low, for example, about 10%. It can be seen that if the uplink transmit power is low, the efficiency of the power amplifier will also decrease, which is not conducive to saving uplink transmit power consumption.

[0131] Transmit link power consumption can include digital domain computation power consumption and device power consumption, which can include components that constitute the transmit link. For example, digital domain computation power consumption refers to the power consumption of the digital processing module in the transmit link, which can perform one or more of the following processes: digital predistortion, signal correction, modulation and coding, fast Fourier transform (FFT), or inverse fast Fourier transform (IFFT). Device power consumption includes, for example, the power consumption of components such as crystal oscillators, mixers, and digital-to-analog converters in the transmit link. If the uplink transmit power is low, the transmit link power consumption will account for a relatively large proportion of the total uplink transmit power consumption.

[0132] As described above, when the uplink transmit power is low, the efficiency of the power amplifier is low, resulting in higher power amplifier power consumption. Furthermore, when the uplink transmit power is low, the power consumption of the transmit link also accounts for a relatively large proportion. Therefore, this application introduces a first transmit mode, which is applicable to lower uplink transmit powers. Through the first transmit mode, even with low uplink transmit power, uplink transmit power consumption can be reduced, for example, by reducing the power amplifier power consumption and / or transmit link power consumption, thereby achieving UE energy saving.

[0133] The first transmission mode includes, for example, one or more of the following: the first maximum transmission power is less than a first threshold, the accuracy of the corresponding crystal oscillator is less than or equal to a second threshold, the corresponding transmission link does not include modules with high complexity, the supported modulation order is less than or equal to a third threshold, or the corresponding waveform is a single-carrier waveform. Wherein, the first maximum transmission power is the maximum transmission power corresponding to the first transmission mode.

[0134] The first maximum transmit power is less than a first threshold. For example, one implementation is that the power amplifier (PA) corresponding to the first transmit mode has lower power consumption or a lower amplification factor. Optionally, the first threshold is, for example, less than or equal to 23dBm. For instance, the first threshold can be the maximum transmit power corresponding to a traditional power class, such as Power Class 1, Power Class 2, and Power Class 3. The maximum transmit power corresponding to Power Class 1 is 29dBm, Power Class 2 is 26dBm, and Power Class 3 is 23dBm. The first threshold is, for example, less than or equal to the minimum of these three maximum transmit powers; that is, the first threshold can be less than or equal to 23dBm. Lowering the first maximum transmit power can reduce the UE's uplink transmit power. As mentioned earlier, reducing the UE's uplink transmit power can help reduce the power consumption of the UE's power amplifier, thereby reducing the UE's uplink transmit power consumption.

[0135] The first maximum transmit power can be implemented in different ways. As an optional implementation, the first maximum transmit power can be the maximum transmit power corresponding to a first power class, such as the power class defined in the embodiments of this application. The first power class can also have other names, such as a low-power power class, etc., and the embodiments of this application do not limit the name. By defining a new power class to implement the first maximum transmit power, the UE does not need to perform additional calculations, thus simplifying the implementation of the UE.

[0136] Optionally, the first power category may be different from the power category corresponding to the second maximum transmit power (the maximum transmit power corresponding to the second transmit mode is called the second maximum transmit power). The power category corresponding to the second maximum transmit power is called the second power category, which may be, for example, power category 1, power category 2, or power category 3 as described above, i.e., the second maximum transmit power may be, for example, 23dBm, 26dBm, or 29dBm. The first power category introduced in this application embodiment is different from these three power categories. For example, the first power category may be defined as power category 4 or power category 5, or it may be defined in other ways. Optionally, the maximum transmit power corresponding to the first power category (i.e., the first maximum transmit power) may be less than the second maximum transmit power. For example, if the second maximum transmit power is 23dBm, then the first maximum transmit power may be less than 23dBm. As an optional implementation, the first maximum transmit power may be, for example, 0dBm, 10dBm, or 15dBm, or it may be other values ​​less than the second maximum transmit power.

[0137] As another optional implementation of the first maximum transmit power, the first maximum transmit power can be determined based on a first value and a second maximum transmit power, where the second maximum transmit power corresponds to a second power category, such as 23dBm, 26dBm, or 29dBm. The first value can also be called a power backoff value, or it can have other names; there is no limitation on the name. For example, the physical meaning of the first value can be a power backoff item used to perform power backoff; or, the first value may not have a substantial physical meaning, or its physical meaning may be to obtain the first maximum transmit power, or its physical meaning may correspond to a first transmit parameter. In this case, the first value may not be configured as a power backoff item, but rather as a parameter used to determine the first maximum transmit power. Optionally, the first maximum transmit power can satisfy the following relationship: P CMAX,L,f,c ≤P CMAX,f,c ≤P CMAX,H,f,c (Formula 2) P CMAX,L,f,c =min{P EMAX,c -ΔT C,c ,(P PowerClass -ΔP PowerClass )-max(max(MPR c AMPR c )+ ΔT IB,c +ΔT C,c +ΔT RxSRS PMPR c (Formula 3) P CMAX,H,f,c =min{P EMAX,c ,P PowerClass -ΔP PowerClass} (Formula 4)

[0138] Among them, P CMAX,f,c This represents the first maximum transmit power, for example, the first maximum transmit power corresponds to carrier f and cell c. P CMAX,L,f,c P represents the lower limit of the first maximum transmit power value. CMAX,H,f,c This represents the upper limit of the first maximum transmit power value. PowerClass This indicates the second maximum transmit power. MPR c AMPR c and PMPR c Indicates the first value, such as MPR. c AMPR is the maximum power back-off value. c Indicates the additional power back-off value, PMPR c This represents the power backoff value corresponding to power management. ΔT C,cand ΔT IB,c This represents additional tolerance, such as the additional tolerance for power back-off. ΔT RxSRS This represents the additional tolerance when considering the channel sounding reference signal (SRS). P EMAX,c Indicates the maximum transmit power configured for the network (e.g., configured via system messages or other signaling). ΔP PowerClass This represents the power backoff value related to the percentage of uplink symbols. min(x,y) represents the smaller of x and y. max(x,y) represents the larger of x and y.

[0139] For example, UE can determine P according to Formula 3. CMAX,L,f,c And determine P according to Formula 4 CMAX,H,f,c Therefore, according to Formula 2, UE can be less than or equal to P. CMAX,H,f,c and greater than or equal to P CMAX,L,f,c The UE can determine a value from the values ​​to be the first maximum transmit power. For example, the UE can randomly select a value as the first maximum transmit power, or the UE can determine the first maximum transmit power based on the first transmit parameters or the capabilities of the UE.

[0140] As another optional implementation of the first maximum transmit power, the first maximum transmit power can be the maximum transmit power configured by the network corresponding to the newly introduced first transmit parameter, such as P mentioned above. EMAX,c For example, network devices can configure independent P for the first transmission parameter and the second transmission parameter respectively. EMAX,c Optionally, the first transmit parameter corresponding to the low-power transmit parameter is P. EMAX,c It can be less than P corresponding to the second emission parameter. EMAX,c .

[0141] Regardless of the implementation method described above for the first maximum transmit power, optionally, the first maximum transmit power can be less than the second maximum transmit power. As can be seen from the previous introduction to uplink transmit power consumption, reducing the uplink transmit power helps to reduce the power consumption of the UE's power amplifier, thereby effectively reducing the uplink transmit power consumption.

[0142] The waveform corresponding to the first transmission mode (or the waveform parameter corresponding to the first transmission mode, the value of which characterizes the waveform corresponding to the first transmission mode) can be called the first transmission waveform, which is, for example, a single-carrier waveform. For instance, this single-carrier waveform is a single-carrier-frequency domain equalized waveform. This single-carrier-frequency domain equalized waveform does not require processing such as discrete Fourier transform (DFT) and IFFT, or it is equivalent to having the same number of points in both DFT and IFFT. This results in a lower peak-to-average power ratio (PAPR) for the single-carrier-frequency domain equalized waveform, which is beneficial for improving the efficiency of the UE's power amplifier and suppressing waveform nonlinearity. Optionally, to combat multipath channels, a cyclic prefix (CP) can be added before each time-domain modulation symbol included in the signal using the first transmission waveform. This facilitates the receiver performing FFT on the signal and then equalizing it in the frequency domain, thereby improving the demodulation performance of the signal.

[0143] Alternatively, the single-carrier waveform can be, for example, a single-carrier modulation symbol waveform. For instance, by not adding a cyclic prefix before each time-domain modulation symbol included in each time-domain symbol of the signal using the first transmitted waveform, a single-carrier modulation symbol waveform can be obtained. Using a single-carrier modulation waveform is beneficial for improving spectral efficiency.

[0144] Alternatively, the first transmitted waveform can also be a constant-mode waveform, such as minimum shift keying (MSK) or Gaussian minimum-shift keying (GMSK). A lower PAPR (Power Amplitude Reduction Rate) in a constant-mode waveform is beneficial for improving the efficiency of the UE's power amplifier and also helps suppress waveform nonlinearity.

[0145] As discussed earlier regarding uplink transmit power consumption, improving the efficiency of the UE's power amplifier helps reduce the power consumption of the UE's power amplifier, which is equivalent to reducing uplink transmit power consumption.

[0146] The crystal oscillator corresponding to the first transmission mode is, for example, the crystal oscillator included in the transmission link corresponding to the first transmission mode. The accuracy of this crystal oscillator can be lower than or equal to a second threshold, which is, for example, less than the accuracy of the crystal oscillator included in the second transmission mode. By reducing the accuracy of the crystal oscillator, it is beneficial to reduce the power consumption of the UE's transmission link, thereby reducing the uplink transmission power consumption of the UE.

[0147] Optionally, higher-complexity modules may include one or more of the following: a digital pre-distortion (DPD) module, an in-phase (I) quadrature (Q) mismatch correction (IQMC) module, or a crest factor reduction (CFR) module. The first transmission mode may not correspond to these modules; for example, the transmission link corresponding to the first transmission mode may not include these modules. Here, I represents the in-phase component of the signal, and Q represents the quadrature component of the signal.

[0148] Please refer to Figure 3A, which shows an example of a transmission link corresponding to the first transmission mode. Optionally, the first transmission mode can correspond to a first transmitter, and Figure 3A can also be considered a schematic diagram of the first transmitter. Figure 3A uses a transmission link corresponding to the first transmission mode that does not include the DPD module, IQMC module, and CFR2 module as an example. DPD can be used to correct signal distortion caused by the nonlinearity of the power amplifier. IQMC can be used to compensate for the imbalance between the I and Q paths of the radio frequency. CFR is a clipping module that can limit the peak value of the signal, thereby reducing the peak-to-average power ratio (PAPR). CFR can mitigate the impact of the nonlinearity of the power amplifier on signal distortion. Modules with higher complexity generally have higher power consumption. The fact that the transmission link corresponding to the first transmission mode does not include or does not correspond to modules with higher complexity helps to reduce the power consumption of the UE's transmission link, thereby reducing the UE's uplink transmission power consumption. Additionally, in Figure 3A, the transmit baseband module can generate a time-domain baseband signal. A digital-to-analog converter (DAC), also known as a digital-to-analog converter module, is used to convert digital signals into analog signals. An envelope tracking (ET) module modulates the input voltage of the power amplifier according to the size of the signal envelope, thereby reducing power consumption. PA represents a power amplifier; this power amplifier is an RF power amplifier used to amplify the power of the RF transmitted signal. The transmit baseband module generates a time-domain baseband signal. The time-domain baseband signal generated by this transmitter baseband module satisfies the following relationship:

[0149] Where X(k) represents the signal carried by the k-th subcarrier in the frequency domain. N represents the number of points in the FFT or IFFT.

[0150] The modulation order supported by the first transmission mode is less than or equal to the third threshold. Optionally, the third threshold may be, for example, the modulation order corresponding to the 16 quadrature amplitude modulation (QAM) modulation method. In this case, the first transmission mode may correspond to modulation methods such as Pi / 2-binary phase shift keying (BPSK) and quadrature phase shift keying (QPSK), but not higher-order modulation methods. Alternatively, the third threshold may be, for example, the modulation order corresponding to the 64QAM modulation method. In this case, the first transmission mode may correspond to modulation methods such as Pi / 2-BPSK, QPSK, and 16QAM, but not higher-order modulation methods. Alternatively, the third threshold may be, for example, the modulation order corresponding to the 256QAM modulation method. In this case, the first transmission mode may correspond to modulation methods such as Pi / 2-BPSK, QPSK, 16QAM, and 64QAM, but not higher-order modulation methods. Alternatively, the third threshold may also be the modulation order corresponding to a modulation method of higher order than 256QAM. This application embodiment does not impose any limitations. By assigning a lower-order modulation scheme to the first transmission mode, the transmission link corresponding to the first transmission mode can be simplified, thereby reducing the power consumption of the UE's transmission link and thus reducing the UE's uplink transmission power consumption.

[0151] In addition, the UE also supports a second transmission mode. This support can be understood in several ways: the UE can transmit signals according to the second transmission mode; or the transmission links included in the UE enable it to transmit signals according to the second transmission mode; or the UE has the capability to transmit signals according to the second transmission mode; or the hardware and / or software resources of the UE enable it to transmit signals according to the second transmission mode, and so on.

[0152] The UE supports a first transmission mode and a second transmission mode. For example, this can be understood as the UE being able to transmit signals according to either the first or second transmission mode; or it can be understood as the transmission links included in the UE enabling the UE to transmit signals according to both the first and second transmission modes; or it can be understood as the UE possessing the ability to transmit signals according to both the first and second transmission modes; or it can be understood as the hardware and / or software resources of the UE enabling the UE to transmit signals according to both the first and second transmission modes, and so on. Optionally, the UE can use either the first or second transmission mode at the same time; that is, these two transmission modes may not be used simultaneously. For example, a UE with both low-power and high-power transmission requirements can support both the first and second transmission modes; similarly, a UE with energy-saving requirements can support both the first and second transmission modes. This application does not limit which specific UEs can support these two transmission modes.

[0153] The first transmission mode and the second transmission mode are different. The power consumption of the UE in the first transmission mode can be lower than that in the second transmission mode. The difference between the first and second transmission modes includes, for example, at least one parameter included or corresponding to the first transmission mode being different from at least one parameter included or corresponding to the second transmission mode. For instance, the types of parameters included in the first transmission mode are partially different or completely different from the types of parameters included in the second transmission mode. For example, the first transmission mode includes waveform parameters whose values ​​correspond to a first transmission waveform, while the second transmission mode does not include waveform parameters, indicating, for example, that the transmission waveform corresponding to the second transmission mode is not limited. Another example is that the values ​​of parameters included in the first transmission mode are different from the values ​​of corresponding parameters included in the second transmission mode. Optionally, the difference between the values ​​of parameters included in the first and second transmission modes may include, the actual values ​​of the parameters included in the first and second transmission modes being different, and / or may include, the candidate values ​​of the parameters included in the first and second transmission modes being completely different or partially different. For example, the actual value of the maximum transmission power corresponding to the second transmission mode (e.g., referred to as the second maximum transmission power) is greater than or equal to the first threshold, while the actual value of the first maximum transmission power corresponding to the first transmission mode is less than the first threshold; or, for example, at least one candidate value of the maximum transmission power corresponding to the second transmission mode (e.g., referred to as the second maximum transmission power) is greater than or equal to the first threshold, while at least one candidate value of the first maximum transmission power corresponding to the first transmission mode is less than the first threshold.

[0154] For example, when the UE uses the first transmission mode, the actual value of the first maximum transmission power corresponding to the first transmission mode is 10dBm; when the UE uses the second transmission mode, the actual value of the maximum transmission power corresponding to the second transmission mode (e.g., referred to as the second maximum transmission power) is 23dBm. It is clear that the first maximum transmission power and the second maximum transmission power are different. As another example, the candidate values ​​for the first maximum transmission power corresponding to the first transmission mode include 0dBm, 10dBm, and 15dBm; the candidate values ​​for the second maximum transmission power corresponding to the second transmission mode include 23dBm, 26dBm, and 29dBm. In this example, the candidate values ​​for the first maximum transmission power and the candidate values ​​for the second maximum transmission power are completely different, indicating that the first maximum transmission power and the second maximum transmission power are different. For another example, the candidate values ​​for the first maximum transmit power corresponding to the first transmission mode include 10dBm, 15dBm, and 23dBm; the candidate values ​​for the second maximum transmit power corresponding to the second transmission mode include 23dBm, 26dBm, and 29dBm. In this example, the candidate values ​​for the first maximum transmit power are partially different from the candidate values ​​for the second maximum transmit power, indicating that the first maximum transmit power and the second maximum transmit power are different.

[0155] The first transmission mode is, for example, a transmission mode newly introduced to the UE in this embodiment of the application, while the second transmission mode is, for example, a traditional transmission mode originally supported by the UE. For example, the first transmission mode may be suitable for uplink transmission at lower power, while the second transmission mode may be suitable for uplink transmission at higher power. Optionally, the second transmission mode corresponds to or satisfies one or more of the following: the second maximum transmission power is greater than or equal to the first threshold, the accuracy of the corresponding crystal oscillator is greater than the second threshold, it includes modules with higher complexity, the supported modulation order is greater than the third threshold, or it corresponds to a non-single-carrier waveform. Wherein, the second maximum transmission power is the maximum transmission power corresponding to the second transmission mode.

[0156] The second maximum transmit power is greater than or equal to the first threshold. For example, one implementation involves a power amplifier with higher power consumption or a higher amplification factor corresponding to the second transmit mode. The first threshold can be found in the previous section. For example, the second maximum transmit power could be 29dBm, 26dBm, or 23dBm.

[0157] Optionally, higher-complexity modules may include one or more of the following: DPD module, IQMC module, or CFR module. The second transmission mode may correspond to these modules; for example, the transmission link corresponding to the second transmission mode includes these modules. Please refer to Figure 3B, which is an example of a transmission link corresponding to the second transmission mode. Optionally, the second transmission mode may correspond to a second transmitter, and Figure 3B can also be considered a schematic diagram of a second transmitter. The second transmitter may or may not include the CFR2 module; Figure 3B uses the inclusion of the CFR2 module as an example. For a description of each module in Figure 3B, please refer to the preceding text. The relationship satisfied by the time-domain baseband signal generated by the transmission baseband module in Figure 3B can be found in Equation 5 above.

[0158] Optionally, the waveform corresponding to the second transmission mode is, for example, a non-single-carrier waveform, such as a DFT-spread-orthogonal frequency division multiplexing (DFT-s-OFDM) waveform or a cyclic prefix (CP)-OFDM waveform.

[0159] Optionally, the second transmitter can be the main transmitter in the UE, and the first transmitter can be an auxiliary transmitter. For example, the second transmitter is also called the main transmitter (MT), and the first transmitter is also called a low-power transmitter (LP-T).

[0160] As an optional relationship between the first and second launch modes, the limitation imposed on the launch link by the indicator of the first launch mode (e.g., referred to as the first indicator) is less than the limitation imposed on the launch link by the indicator of the second launch mode (e.g., referred to as the second indicator). Optionally, the first indicator can be an indicator corresponding to the first launch link, where the first launch link is the launch link corresponding to the first launch mode; or it can be assumed that the first indicator does not correspond to the first launch link, but rather to the first launch mode. The second indicator can be an indicator corresponding to the second launch link, where the second launch link is the launch link corresponding to the second launch mode; or it can be assumed that the second indicator does not correspond to the second launch link, but rather to the second launch mode. If the first indicator corresponds to the first launch link and the second indicator corresponds to the second launch link, then the limitation imposed on the launch link by the first indicator can specifically be the limitation imposed on the first launch link by the first indicator, and the limitation imposed on the launch link by the second indicator can specifically be the limitation imposed on the second launch link by the second indicator.

[0161] It is evident that the first metric imposes fewer restrictions on the transmission link, or it can be understood that the first metric is more lenient than the second metric, thereby reducing the power consumption of the first transmission link, or reducing the UE power consumption when using the first transmission mode.

[0162] The first metric may include, for example, one or more of frequency error, in-band metrics, or out-of-band metrics, and the second metric may include, for example, one or more of frequency error, in-band metrics, or out-of-band metrics. The parameters included in the first metric and the parameters included in the second metric may be exactly the same or partially the same.

[0163] Optionally, the first metric may include in-band metrics such as one or more of the following: error vector magnitude (EVM), carrier leakage, or in-band emissions. The second metric may also include one or more of the above metrics, for example, both the first and second metrics may include the above metrics.

[0164] The first metric includes out-of-band metrics, such as one or more of the following: spectrum emission mask, adjacent channel leakage ratio, spurious emissions, or transmit intermodulation. The second metric also includes out-of-band metrics, such as one or more of the above, for example, both the first and second metrics may include the above items.

[0165] The first metric's limitation on the transmission link can be reflected by the values ​​it includes; similarly, the second metric's limitation on the transmission link can be reflected by the values ​​it includes. The first metric imposes less restriction on the transmission link than the second metric, for example, by having at least one parameter in the first metric have a different value than the corresponding parameter in the second metric, and the value of at least one parameter in the first metric is more lenient than the value of the corresponding parameter in the second metric. An example is provided below for clarity.

[0166] 1. Frequency error, also known as transmission frequency error.

[0167] The frequency error included in the second indicator is, for example, ±0.1 parts per million (PPM). The frequency error included in the first indicator can be greater than the frequency error included in the second indicator, in order to relax the first indicator. For example, the frequency error included in the first indicator is...

[0168] ±1PPM, ±5PPM, ±10PPM, or ±20PPM, etc.

[0169] 2. In-band indicators.

[0170] (1) EVM.

[0171] The second indicator includes, for example, EVM, which can be found in Table 1.

[0172] Table 1

[0173] In Table 1, for example, when the modulation method is When using BPSK modulation, the corresponding EVM is 30%; when using QPSK modulation, the corresponding EVM is 17.5%, and so on.

[0174] If the first metric includes EVM, then the EVM included in the first metric can be more lenient than the EVM included in the second metric. For example, for the same modulation scheme, the EVM included in the first metric can be greater than the EVM included in the second metric. For example, the EVM included in the first metric can satisfy one or more of the following: when the modulation scheme is... For BPSK modulation, the second metric includes 30% of the EVM, while the first metric can include more than 30% of the EVM; for QPSK modulation, the second metric includes 17.5% of the EVM, while the first metric can include more than 17.5% of the EVM; for 16QAM modulation, the second metric includes 12.5% ​​of the EVM, while the first metric can include more than 12.5% ​​of the EVM; for 64QAM modulation, the second metric includes 8% of the EVM, while the first metric can include more than 8% of the EVM; or, for 256QAM modulation, the second metric includes 3.5% of the EVM, while the first metric can include more than 3.5% of the EVM.

[0175] Please refer to Table 2 for an example of EVM included in the first indicator.

[0176] Table 2

[0177] Table 2 does not provide examples of EVM for modulation schemes of 16QAM, 64QAM, and 256QAM. Optionally, the EVM for these modulation schemes may also be greater than the corresponding EVM included in the second indicator. Alternatively, the order of the modulation scheme supported by the first transmission mode may be less than the third threshold, indicating that the first transmission mode may not support higher-order modulation schemes, such as one or more of 16QAM, 64QAM, or 256QAM.

[0178] (2) Carrier leakage.

[0179] The second indicator includes, for example, carrier leakage, which can be found in Table 3.

[0180] Table 3

[0181] In Table 3, for example, when the output power is greater than 10 dBm, the corresponding carrier leakage is -28 dBc; when the output power is less than or equal to 10 dBm and greater than or equal to 0 dBm, the corresponding carrier leakage is -25 dBc, and so on. Here, output power refers to, for example, the uplink transmit power.

[0182] If the first metric includes carrier leakage, then the carrier leakage included in the first metric can be less than the carrier leakage included in the second metric. For example, when the output power is within the same range, the value of the carrier leakage included in the first metric can be greater than the value of the carrier leakage included in the second metric. For example, the carrier leakage included in the first indicator may satisfy one or more of the following: when the output power is greater than 10dBm, the carrier leakage included in the second indicator is -28dBc, while the carrier leakage included in the first indicator may be greater than -28dBc; when the output power is less than or equal to 10dBm and greater than or equal to 0dBm, the carrier leakage included in the second indicator is -25dBc, while the carrier leakage included in the first indicator may be greater than -25dBc; when the output power is less than or equal to 0dBm and greater than or equal to -30dBm, the carrier leakage included in the second indicator is -20dBc, while the carrier leakage included in the first indicator may be greater than -20dBc; or, when the output power is less than or equal to -30dBm and greater than or equal to -40dBm, the carrier leakage included in the second indicator is -10dBc, while the carrier leakage included in the first indicator may be greater than -10dBc.

[0183] Please refer to Table 4 for an example of carrier leakage included in the first indicator.

[0184] Table 4

[0185] Table 4 does not provide examples of carrier leakage with an output power greater than 10 dBm. Optionally, since the first indicator corresponds to the first transmission mode, and the first transmission mode is used for low-power transmission mode, the UE's uplink transmit power may be lower when using the first transmission mode, for example, it may not be greater than 10 dBm. Alternatively, if the UE's uplink transmit power may be greater than 10 dBm when using the first transmission mode, the corresponding carrier leakage can be greater than -28 dBc.

[0186] (3) Stray particles within the band.

[0187] The second indicator includes, for example, in-band spurious emissions, which can be found in Table 5.

[0188] Table 5

[0189] In Table 5, max(x,y) represents taking the larger value between x and y. RB L represents the number of RBs configured for transmission bandwidth. CRB The number of RBs represents the transmission bandwidth, and ΔRB represents the number of RBs used to measure the interval between unallocated and allocated RBs. This represents the average transmit power. Sub-carrier spacing (SCS) represents the sub-carrier spacing.

[0190] If the first metric includes in-band spurious emissions, the in-band spurious emissions included in the first metric can be less severe than those included in the second metric. The in-band spurious emissions include multiple parameters, such as general, IQ image, and carrier leakage. The in-band spurious emissions included in the first metric are less severe than those included in the second metric, for example, at least one parameter included in the in-band spurious emissions of the first metric is less severe than the corresponding parameter included in the in-band spurious emissions of the second metric. For example, the in-band spurious emissions of the first metric satisfy one or more of the following: the general spurious emissions included in the first metric are less severe than the general spurious emissions included in the second metric; the IQ image included in the in-band spurious emissions of the first metric is less severe than the IQ image included in the in-band spurious emissions of the second metric; or, the carrier leakage included in the in-band spurious emissions of the first metric is less severe than the carrier leakage included in the in-band spurious emissions of the second metric.

[0191] Wherein, the generality of the in-band spurious emissions of the first indicator is more relaxed than that of the in-band spurious emissions of the second indicator. For example, it can be implemented such that the generality of the in-band spurious emissions of the first indicator satisfies the following relationship:

[0192] Where a can be greater than -25, and / or b can be greater than -57. For example, a is -22 and b is -54. Taking a = -22 and b = -54 as an example, formula 6 can be replaced with:

[0193] The IQ image included in the in-band spurious emissions of the first metric is more relaxed than the IQ image included in the in-band spurious emissions of the second metric. For example, it can be implemented such that when the output power is >10dBm, the image frequency corresponding to the first metric can be greater than -28dB; and / or, when the output power is ≤10dBm, the image frequency corresponding to the first metric can be greater than -25dB.

[0194] The carrier leakage included in the first indicator may be less than that included in the second indicator, as can be seen in the introduction of item (3) above.

[0195] Please refer to Table 6 for an example of carrier leakage included in the first indicator.

[0196] Table 6

[0197] 3. Out-of-band indicators.

[0198] (1) Spectrum emission template.

[0199] The second indicator includes, for example, a spectrum emission template, which can be found in Table 7.

[0200] Table 7

[0201] In Table 7, Δf OOB Indicates the distance between in-band and out-of-band. (BW) channel This represents the channel bandwidth. For example, the channel bandwidth is 3MHz, the measurement bandwidth is 1% of the channel bandwidth, and Δf... OOB When the value is ±0-1, the corresponding spectral emission limit is -13dBm; the channel bandwidth is 50MHz, the measurement bandwidth is 30kHz, and Δf OOB When the value is ±0-1, the corresponding spectral emission limit is -24dBm, and so on.

[0202] If the first metric includes a spectrum emission template, then the spectrum emission template included in the first metric can be more lenient than the spectrum emission template included in the second metric. For example, in Δf OOB When the spectrum emission limit of the first indicator is greater than that of the second indicator, and the measurement bandwidth and channel bandwidth are within the same range, the spectrum emission limit of the first indicator can be greater than that of the second indicator. For example, the spectrum emission template included in the first indicator can satisfy one or more of the following: channel bandwidth is 3MHz, measurement bandwidth is 1% of channel bandwidth, Δf OOB When the range is ±0-1, the spectral emission limit corresponding to the second indicator is -13dBm, while the spectral emission limit corresponding to the first indicator can be greater than -13dBm; the channel bandwidth is 5MHz, the measurement bandwidth is 1% of the channel bandwidth, and Δf OOB When the range is ±0-1, the spectral emission limit corresponding to the second indicator is -13dBm, while the spectral emission limit corresponding to the first indicator can be greater than -13dBm; the channel bandwidth is 10MHz, 15MHz, 20MHz, 25MHz, 30MHz, 35MHz, 40MHz, or 45MHz; the measurement bandwidth is 1% of the channel bandwidth; Δf OOB When the range is ±0-1, the spectral emission limit corresponding to the second indicator is -13dBm, while the spectral emission limit corresponding to the first indicator can be greater than -13dBm; the channel bandwidth is 50MHz, 60MHz, 70MHz, 80MHz, 90MHz, or 100MHz; the measurement bandwidth is 30kHz; ΔfOOB When the range is ±0-1, the spectral emission limit corresponding to the second indicator is -24dBm, while the spectral emission limit corresponding to the first indicator can be greater than -24dBm; the channel bandwidth is 3MHz, the measurement bandwidth is 1MHz, and Δf OOB When the value is ±1-5, the spectral emission limit corresponding to the second indicator is -10dBm, while the spectral emission limit corresponding to the first indicator can be greater than -10dBm; the channel bandwidth is 5MHz, the measurement bandwidth is 1MHz, and Δf OOB When the value is ±1-5, the spectral emission limit corresponding to the second indicator is -10dBm, and the spectral emission limit corresponding to the first indicator can be greater than -10dBm; the channel bandwidth is 10MHz or 15MHz or 20MHz or 25MHz or 30MHz or 35MHz or 40MHz or 45MHz, the measurement bandwidth is 1MHz, and Δf OOB When the value is ±1-5, the spectral emission limit corresponding to the second indicator is -10dBm, while the spectral emission limit corresponding to the first indicator can be greater than -10dBm; the channel bandwidth is 3MHz, the measurement bandwidth is 1MHz, and Δf OOB When the value is ±5-6, the spectral emission limit corresponding to the second indicator is -25dBm, while the spectral emission limit corresponding to the first indicator can be greater than -25dBm; the channel bandwidth is 5MHz, the measurement bandwidth is 1MHz, and Δf OOB When the value is ±5-6, the spectral emission limit corresponding to the second indicator is -13dBm, while the spectral emission limit corresponding to the first indicator can be greater than -13dBm; the channel bandwidth is 5MHz, the measurement bandwidth is 1MHz, and Δf OOB When the value is ±6-10, the spectral emission limit corresponding to the second indicator is -25dBm, and the spectral emission limit corresponding to the first indicator can be greater than -25dBm; the channel bandwidth is 10MHz or 15MHz or 20MHz or 25MHz or 30MHz or 35MHz or 40MHz or 45MHz, the measurement bandwidth is 1MHz, and Δf OOB When the value is ±1-5, the spectral emission limit corresponding to the second indicator is -10dBm, and the spectral emission limit corresponding to the first indicator can be greater than -10dBm; the channel bandwidth is 10MHz or 15MHz or 20MHz or 25MHz or 30MHz or 35MHz or 40MHz or 45MHz, the measurement bandwidth is 1MHz, and Δf OOB ±5-BW channel At that time, the spectral emission limit corresponding to the second indicator is -13dBm, and the spectral emission limit corresponding to the first indicator can be greater than -13dBm; or, the channel bandwidth is 10MHz or 15MHz or 20MHz or 25MHz or 30MHz or 35MHz or 40MHz or 45MHz, the measurement bandwidth is 1MHz, and Δf OOB ±BW channel-(BW channel When +5), the spectral emission limit corresponding to the second indicator is -25dBm, while the spectral emission limit corresponding to the first indicator can be greater than -25dBm.

[0203] Please refer to Table 8 for an example of the spectrum emission templates included in the first indicator.

[0204] Table 8

[0205] (2) Adjacent channel leakage power ratio.

[0206] The second indicator includes, for example, the adjacent channel leakage power ratio, which can be found in Table 9.

[0207] Table 9

[0208] Table 9 shows that the NR ACLR differs for different power categories. For example, the NR ACLR for power category 1 is 37 dB, the NR ACLR for power category 2 is 31 dB, and so on.

[0209] If the first indicator includes a spectrum emission template, the spectrum emission template included in the first indicator can be more lenient than the spectrum emission template included in the second indicator. For example, for the same power category, the NR ACLR corresponding to the first indicator can be greater than the NR ACLR corresponding to the second indicator. Alternatively, embodiments of this application introduce a first power category, and the NR ACLR corresponding to the first power category can be less than all the NR ACLRs in Table 9.

[0210] Please refer to Table 10 for an example of the adjacent channel leakage power ratio included in the first metric.

[0211] Table 10

[0212] Table 10 uses a maximum transmit power of less than or equal to 10 dBm for the first power category as an example. If the maximum transmit power for the first power category is other values, such as less than 23 dBm, 26 dBm, or 29 dBm, then the NR ACLR for the first power category in Table 10 may also be different.

[0213] (3) Stray radiation.

[0214] The second indicator includes, for example, stray radiation, which can be found in Table 11.

[0215] Table 11

[0216] In Table 11, for example, when the frequency range is greater than or equal to 9kHz and less than 150kHz and the measurement bandwidth is 1kHz, the maximum level of spurious radiation is -36dBm; for another example, when the frequency range is greater than or equal to 150kHz and less than 30MHz and the measurement bandwidth is 10kHz, the maximum level of spurious radiation is -36dBm, and so on.

[0217] If the first criterion includes stray radiation, the stray radiation included in the first criterion can be more lenient than that included in the second criterion. For example, when the frequency range and measurement bandwidth are the same, the maximum level of stray radiation corresponding to the first criterion can be greater than the maximum level of stray radiation corresponding to the second criterion. For example, the stray radiation included in the first criterion satisfies one or more of the following: when the frequency range is greater than or equal to 9kHz and less than 150kHz and the measurement bandwidth is 1kHz, the maximum level of stray radiation corresponding to the second criterion is -36dBm, while the maximum level of stray radiation corresponding to the first criterion can be greater than -36dBm; when the frequency range is greater than or equal to 150kHz and less than 30MHz and the measurement bandwidth is 10kHz, the maximum level of stray radiation corresponding to the second criterion is -36dBm, while the maximum level of stray radiation corresponding to the first criterion can be greater than -36dBm; when the frequency range is greater than or equal to 30MHz and less than 1000MHz and the measurement bandwidth is 100kHz, the maximum level of stray radiation corresponding to the second criterion... The maximum level of spurious radiation for the first indicator is -36 dBm, while the maximum level of spurious radiation for the second indicator can be greater than -36 dBm; when the frequency range is greater than or equal to 1 GHz and less than 12.75 GHz, and the measurement bandwidth is 1 MHz, the maximum level of spurious radiation for the second indicator is -30 dBm, while the maximum level of spurious radiation for the first indicator can be greater than -30 dBm; when the frequency range is greater than or equal to 1 GHz and less than 12.75 GHz, and the measurement bandwidth is 1 MHz, the maximum level of spurious radiation for the second indicator is -25 dBm, while the maximum level of spurious radiation for the first indicator can be greater than -25 dBm; when the frequency range is greater than or equal to 12.75 GHz and less than 5 MHz, the maximum level of spurious radiation for the second indicator is -25 dBm, while the maximum level of spurious radiation for the first indicator can be greater than -25 dBm; when the frequency range is greater than or equal to 12.75 GHz and less than 5 MHz, the maximum level of spurious radiation for the second indicator is -30 dBm, while the maximum level of spurious radiation for the first indicator can be greater than -25 dBm; when the frequency range is greater than or equal to 12.75 GHz and less than 5 MHz, the maximum level of spurious radiation for the second indicator is -36 ...36 dBm. th When the harmonic of the upper frequency edge of the UL operating band in GHz and the measurement bandwidth is 1MHz, the maximum level of spurious radiation corresponding to the second indicator is -30dBm, while the maximum level of spurious radiation corresponding to the first indicator can be greater than -30dBm; or, when the frequency range is greater than 12.75GHz and less than 26GHz and the measurement bandwidth is 1MHz, the maximum level of spurious radiation corresponding to the second indicator is -30dBm, while the maximum level of spurious radiation corresponding to the first indicator can be greater than -30dBm.

[0218] Please refer to Table 12 for an example of stray radiation included in the first indicator.

[0219] Table 12

[0220] (4) Transmission intermodulation.

[0221] The second indicator includes, for example, transmit intermodulation, which can be found in Table 13.

[0222] Table 13

[0223] Table 6.5.2.4.1-1 represents the NR ACLR measurement bandwidth.

[0224] Table 6.5.2.4.1-1: NR ACLR measurement bandwidth

[0225] In Table 13, BW channel Indicates the channel bandwidth.

[0226] If the first metric includes transmit intermodulation, then the transmit intermodulation included in the first metric can be less restrictive than that included in the second metric. Transmit intermodulation includes multiple parameters, such as wanted signal channel bandwidth, interference signal frequency offset from channel center, interference CW signal level, intermodulation product, measurement bandwidth, and measurement offset from channel center. The transmit intermodulation included in the first metric is less restrictive than that included in the second metric; for example, at least one parameter included in the transmit intermodulation of the first metric is less restrictive than the corresponding parameter included in the transmit intermodulation of the second metric. For instance, the transmit intermodulation of the first metric satisfies one or more of the following: the interference CW signal level included in the transmit intermodulation of the first metric is less restrictive than the interference CW signal level included in the in-band spurious emissions of the second metric; or, the intermodulation product included in the in-band spurious emissions of the first metric is less restrictive than the intermodulation product included in the in-band spurious emissions of the second metric.

[0227] In this context, the transmit intermodulation of the first indicator includes a looser CW signal level than the transmit intermodulation of the second indicator. For example, the transmit intermodulation of the first indicator includes a higher CW signal level than the transmit intermodulation of the second indicator.

[0228] The transmit intermodulation product included in the first indicator is less restrictive than the transmit intermodulation product included in the second indicator. For example, when the out-of-band frequency offset is the same as the in-band frequency offset, the transmit intermodulation product included in the first indicator is greater than the transmit intermodulation product included in the second indicator.

[0229] Please refer to Table 14 for an example of transmit intermodulation included in the first indicator.

[0230] Table 14

[0231] In addition to the parameters mentioned above, the first indicator may also involve one or more other parameters. The first indicator may also have corresponding relaxation mechanisms for these parameters, and there are no restrictions on them.

[0232] Optionally, the first transmission mode can correspond to the first transmitter, and the second transmission mode can correspond to the second transmitter. That is, the UE in this embodiment can support two sets of transmitters. The second transmitter is, for example, the traditional OFDM transmitter originally in the UE, while the first transmitter can be a transmitter added in this embodiment.

[0233] An example of the second transmitter can be seen in Figure 3B. The first transmitter can be implemented in various ways, and examples are given below.

[0234] As a first optional implementation of the first transmitter, the first transmitter is an OFDM transmitter. For example, the first transmitter may be a simplified version of a conventional OFDM transmitter. Implementation methods for the first transmitter include, for example, omitting modules with higher complexity found in conventional OFDM transmitters, and / or having at least one functional module included in the first transmitter with specifications lower than those of corresponding functional modules included in conventional OFDM transmitters. That is, the first transmitter may be a simplified OFDM transmitter, and simplification can reduce the power consumption of the first transmitter.

[0235] For example, a conventional OFDM transmitter, as shown in Figure 3B, can also be a second transmitter. If the first transmitter does not include the more complex modules found in a conventional OFDM transmitter, it may optionally exclude one or more of the DPD, IQMC, or CFR2 modules found in a conventional OFDM transmitter. An example of the structure of the first transmitter in this case can be found in Figure 3A, which illustrates a first transmitter that does not include the DPD, IQMC, and CFR2 modules.

[0236] The specifications of the functional modules included in the first transmitter can be lower. For example, the first transmitter and the second transmitter may include the same type of modules or devices, but the specifications of the same type of modules or devices included in the first transmitter and the second transmitter may be different. For example, the specifications of at least one module or device included in the first transmitter may be lower than the specifications of the same type of module or device included in the second transmitter. For example, both the first transmitter and the second transmitter include ET modules, but the envelope tracking frequency of the ET module included in the first transmitter may be lower than the envelope tracking frequency of the ET module included in the second transmitter, and / or the measurement accuracy of the ET module included in the first transmitter may be lower than the measurement accuracy of the ET module included in the second transmitter. As another example, both the first transmitter and the second transmitter include DAC modules, but the sampling rate of the DAC module included in the first transmitter is lower than the sampling rate of the DAC module included in the second transmitter, and / or the bit width of the DAC module included in the first transmitter is lower than the bit width of the DAC module included in the second transmitter.

[0237] As a second optional implementation of the first transmitter, the first transmitter can be an radio frequency (RF) modulated transmitter. When the UE transmits an uplink signal using the first transmitter, it can modulate the uplink signal on the radio frequency, thereby saving a significant amount of baseband processing and reducing uplink transmission power consumption. Furthermore, the signal modulated on the radio frequency can be a single-carrier signal, which is a constant-mode signal, resulting in higher efficiency of the power amplifier and further reducing uplink transmission power consumption.

[0238] The radio frequency modulation transmitter can be implemented in different ways. Optionally, the radio frequency modulation transmitter can be a phase-shift keying (PSK) modulation transmitter, a frequency-shift keying (FSK) modulation transmitter, an on-off-keying (OOK) modulation transmitter, or other radio frequency modulation transmitters.

[0239] A. PSK modulation transmitter.

[0240] A structural example of a PSK modulated transmitter can be found in Figure 4A. A PSK modulated transmitter may include an oscillator (OSC) module, a phase-locked loop (PLL) module, a phase shifter network (PSN) module, a power amplifier, an RF filter, and an antenna. The PSK modulated transmitter outputs a carrier wave from the PLL module, and the PSN module controls the phase of this carrier wave. The PSN module can be controlled by the digital signal to be transmitted. The signal output from the PSN module is amplified by the power amplifier, then the out-of-band portion of the signal is filtered out by the RF filter, and finally the filtered signal is transmitted via the antenna.

[0241] B. FSK modulation transmitter.

[0242] Figure 4B provides a structural example of an FSK modulated transmitter. An FSK modulated transmitter may include an OSC module, a PLL module, a power amplifier, an RF filter, and an antenna. In the FSK modulated transmitter, the digital signal to be transmitted controls the frequency divider in the PLL module, causing the PLL module to generate signals of different frequencies. These signals are amplified by the power amplifier, and the out-of-band portions of these signals are filtered out by the RF filter before being transmitted via the antenna.

[0243] C. OOK modulation transmitter.

[0244] An example of the structure of an OOK modulation transmitter can be seen in Figure 4C. An OOK modulation transmitter may include a surface acoustic wave resonator (SAW resonator), an OSC module, a mixer, a power amplifier, an RF filter, and an antenna. In the OOK modulation transmitter, the digital signal to be transmitted is mixed with the RF carrier signal in the mixer. The signal output from the mixer is amplified by the power amplifier, the out-of-band portion of the signal is filtered out by the RF filter, and then the filtered signal is transmitted via the antenna.

[0245] In this embodiment, the UE supports a first transmitter and a second transmitter. When transmitting a signal, whether to use the first transmitter or the second transmitter can be determined by the network device, the UE can periodically use both transmitters, or the UE can determine which transmitter to use based on a first condition. For example, when the first condition is met, the first transmitter is used (see Figure 5A); when the first condition is not met, the second transmitter is used (see Figure 5B). Optionally, the first condition includes one or more of the following: the service corresponding to the signal to be transmitted is a low-power service; the transmission power of the signal to be transmitted is lower than a first threshold; or, the signal to be transmitted is small packet data. The first condition can also be called the first transmitter activation condition.

[0246] The UE's first transmitter can be implemented in several ways, and the network device can use a receiver corresponding to the first transmitter. For example, if the UE's first transmitter is a simplified OFDM transmitter, the network device can also use a corresponding simplified OFDM receiver. Alternatively, if the UE's first transmitter is an RF modulation transmitter, the network device can use a corresponding RF demodulation receiver. For instance, if the first transmitter is a PSK transmitter, the network device can use a corresponding PSK receiver; if the first transmitter is an FSK transmitter, the network device can use a corresponding FSK receiver; or if the first transmitter is an OOK transmitter, the network device can use a corresponding OOK receiver. In this approach, the network device can also support two sets of receivers: one set for receiving uplink signals from the first transmitter, and the other set for receiving uplink signals from the second transmitter.

[0247] Alternatively, for network devices, it may not be necessary to set up a separate set of receivers. Regardless of whether the signal comes from the first transmitter or the second transmitter, the network device can use the same set of receivers to receive the signal. This receiver is, for example, an OFDM receiver, which can be a traditional OFDM receiver rather than a simplified OFDM receiver.

[0248] If the network device uses traditional OFDM receivers to receive signals from both the first and second transmitters, the transmission and reception processes do not completely correspond when a UE transmits uplink signals using the first transmitter. For example, if the first transmitter is a simplified OFDM transmitter, the signal transmitted by the first transmitter may be of lower quality than that transmitted by the second transmitter, potentially interfering with the signal transmitted by the second transmitter. Similarly, if multiple UEs transmit uplink signals to the network device on the same time domain resource (e.g., the same time slot), and some UEs use the first transmitter while others use the second transmitter, the signal transmitted by the first transmitter may interfere with the signal transmitted by the second transmitter. Optionally, the network device can take measures to reduce interference between signals. One such measure is described in S202 and S203.

[0249] S202. The network device removes the first signal from the second signal to obtain the third signal.

[0250] For example, in S201, in addition to the UEs mentioned above, one or more other UEs send signals to the network device. These signals from multiple UEs may occupy the same time slot. The network device can receive signals from these multiple UEs in that time slot. For example, the signal received by the network device can be called the second signal, which includes signals from multiple UEs, with one UE's signal being the first signal. After receiving the second signal, the network device can remove the signal corresponding to the first transmission mode from the second signal, and the remaining signal is the third signal. For example, the network device can determine which signals in the second signal originate from the first transmitter, or which signals in the second signal correspond to the first transmission mode. For signals from the first transmitter or corresponding to the first transmission mode, the network device can reconstruct these signals, for example, by demodulating and decoding them. Then, it can remove the demodulated and decoded signals from the second signal, and the remaining signal in the second signal is the third signal. The third signal includes signals from one or more UEs. It can be assumed that the signals included in the third signal originate from the second transmitter, or that the signals included in the third signal correspond to the second transmission mode. This will be described in detail below.

[0251] To remove signals corresponding to the first transmission mode from the second signal, the network device must first identify which signals in the second signal come from the first transmitter, or determine which signals in the second signal correspond to the first transmission mode.

[0252] As an optional implementation for a network device to determine the transmission mode or transmitter corresponding to a signal, the network device can determine the transmission mode or transmitter corresponding to the signal based on the channel information corresponding to the signal. For example, the network device can perform channel estimation based on uplink reference signals from multiple UEs to determine the channel information corresponding to the multiple UEs, and then determine the transmission mode or transmitter corresponding to the signals of the multiple UEs based on the channel information corresponding to the multiple UEs. The multiple UEs can be transmitters of some or all of the sub-signals included in the second signal. The uplink reference signal may include, for example, a channel sounding reference signal (SRS) and / or a demodulation reference signal (DMRS), or may include other uplink reference signals. For example, the channel information obtained by the network device may include frequency offset. If the frequency offset corresponding to the channel information of a certain UE is less than or equal to a fourth threshold, the network device can determine that the signal from that UE included in the second signal corresponds to a first transmitter or a first transmission mode; otherwise, it determines that the signal from that UE included in the second signal corresponds to a second transmitter or a second transmission mode.

[0253] As another optional implementation for a network device to determine the transmission mode or transmitter corresponding to a signal, the network device can determine the transmission mode or transmitter corresponding to the signal from the UE based on information from the UE. For example, a first UE can send first information to the network device, which indicates that the signal from the first UE corresponds to a first transmitter or a first transmission mode; upon receiving the first information, the network device can determine that the signal from the first UE corresponds to the first transmitter or the first transmission mode. As another example, a second UE can send second information to the network device, which indicates that the signal from the second UE corresponds to a second transmitter or a second transmission mode, or that the second information indicates that the signal from the second UE does not correspond to the first transmitter or the first transmission mode; upon receiving the second information, the network device can determine that the signal from the second UE corresponds to the second transmitter or the second transmission mode. Alternatively, if a UE sends a signal that corresponds to a second transmitter or a second transmission mode, the UE may not send information indicating the transmitter or transmission mode to the network device (e.g., neither sending the first nor the second information); if the network device does not receive information from a UE, it can determine that the signal from that UE corresponds to a second transmitter or a second transmission mode. In this context, the first UE may belong to multiple UEs (which are transmitters of some or all of the signals included in the second signal), and the signal from the first UE may be one of the signals in the second signal. Similarly, the second UE may belong to multiple UEs (which are transmitters of some or all of the signals included in the second signal), and the signal from the second UE may be one of the signals in the second signal.

[0254] As another optional implementation for a network device to determine the transmission mode or transmitter corresponding to a signal, the network device can determine the transmitter or transmission mode corresponding to the signal based on the resources carrying the signal. Optionally, the first transmitter or the first transmission mode has corresponding resources, which may be predefined by the protocol or pre-configured by the network device. For example, if a signal in the second signal is carried on a first resource, and the first resource is a resource corresponding to the first transmitter or the first transmission mode, then the network device can determine that the signal corresponds to the first transmitter or the first transmission mode. As another example, if a signal in the second signal is carried on a second resource, and the second resource is not a resource corresponding to the first transmitter or the first transmission mode, then the network device can determine that the signal corresponds to the second transmitter or the second transmission mode.

[0255] Once the network device identifies the signal corresponding to the first transmitter or the first transmission mode from the second signal, it can perform demodulation and decoding on these signals. These demodulated and decoded signals can be referred to as the fifth signal. The fifth signal may include, for example, the first signal, or it can be considered that the fifth signal includes the demodulated and decoded first signal. The network device can remove the fifth signal from the second signal, which is equivalent to removing the signal from the first transmitter, thereby reducing the interference caused by the first transmitter's signal to the second transmitter's signal. Optionally, the fifth signal may include one or more signals. The network device can remove each signal from the second signal in descending order of the received energy corresponding to the signals included in the fifth signal. For example, if the fifth signal includes the first signal and the fourth signal, the network device can remove the first signal and the fourth signal in descending order of their received energy corresponding to them. The higher the received energy of the signal from the first transmitter, the greater the interference it causes to other signals. Therefore, the network device can prioritize removing signals with greater interference, resulting in better interference cancellation.

[0256] For example, the second signal received by the network device is represented as Y, which includes signals from four UEs: UE1, UE2, UE3, and U4. Signal Y can be represented as follows: Y = H1X1 + H2X2 + H3X3 + H4X4 + N (Formula 8)

[0257] In this diagram, H1 represents the channel information corresponding to UE1, and X1 represents the information obtained by the network device after demodulating and decoding the signal from UE1 included in signal Y. H2 represents the channel information corresponding to UE2, and X2 represents the information obtained by the network device after demodulating and decoding the signal from UE2 included in signal Y. H3 represents the channel information corresponding to UE3, and X3 represents the information obtained by the network device after demodulating and decoding the signal from UE3 included in signal Y. H4 represents the channel information corresponding to UE4, and X4 represents the information obtained by the network device after demodulating and decoding the signal from UE4 included in signal Y. N represents noise. H1, H2, H3, and H4 can be obtained by the network device through channel estimation.

[0258] The network device can determine the signals corresponding to the first transmission mode included in signal Y. For example, if the network device determines that the signals from UE2 and UE4 in signal Y correspond to the first transmission mode, then the network device can remove the signals from UE2 and UE4 from signal Y. Wherein, the received energy of the signal from UE4 is higher than the received energy of the signal from UE2, so the network device can remove the signal from UE4 first. For example, the signal obtained after removing the signal from UE4 from signal Y is Y′, which is represented as follows: Y′=H1X1+H2X2+H3X3+N (Formula 9)

[0259] The network device then removes the signal from UE2 from signal Y′. For example, the signal obtained after removing the signal from UE2 from signal Y′ is Y″, which is represented as follows: Y″=H1X1+H3X3+N (Formula 10)

[0260] Y″ is the third signal.

[0261] S203, Network equipment demodulates the third signal.

[0262] Network devices can demodulate and decode the third signal according to traditional procedures. The third signal may include signals from one or more UEs (for example, in the example of S202, Y″ as the third signal may include signals from UE1 and signals from UE3). The network device can demodulate and decode the third signal as a whole, instead of demodulating and decoding each of the individual signals included in the third signal separately.

[0263] Through S202 and S203, when the first transmitter is a simplified OFDM transmitter and the receiver used by the network device is a conventional OFDM receiver, the network device can also remove the signal from the first transmitter from the received signal, thereby reducing the interference caused by the signal from the first transmitter to the signal from the second transmitter and improving the quality of the received signal.

[0264] In addition, the first transmitter may not be a simplified OFDM transmitter, but rather an RF modulation transmitter. In this case, the network device may not need to execute S202 and S203. Optionally, the network device can use a corresponding RF demodulation receiver to receive the signal, or it can use a conventional OFDM receiver. If the network device uses a conventional OFDM receiver to receive the signal from the simplified OFDM transmitter, optionally, the time-domain symbol length of the first signal can be specified as a fraction of the OFDM symbol length. This enables network devices to perform demodulation and other processing on the first signal. Generally, the length of the time-domain symbol included in the signal transmitted by an RF modulator may be variable; while the time-domain symbol corresponding to an OFDM receiver is an OFDM symbol, the length of which is fixed. If the length of the time-domain symbol of the signal transmitted by the RF modulator is not constrained, the OFDM receiver may corrupt the signal when processing it. For example, if the OFDM receiver truncates the received signal according to the OFDM symbol length, but the time-domain symbol length of the signal is not the OFDM symbol length, the OFDM receiver may corrupt the signal during truncation, leading to processing failure. Therefore, in this embodiment, the length of the time-domain symbol of the first signal is set to a fraction of the OFDM symbol length. The OFDM receiver can then truncate the received signal according to the OFDM symbol length without destroying the signal, thus improving the processing accuracy of the OFDM receiver. Here, N can be a positive integer. Optionally, N can be equal to 1, or N can be a multiple of 2.

[0265] In this embodiment, the UE can support multiple transmission modes, such as a first transmission mode and a second transmission mode. This allows the UE to select the appropriate transmission mode from among these modes when transmitting signals, ensuring that the selected mode meets the requirements of the corresponding signal. Furthermore, the availability of multiple transmission modes makes the UE's transmission process more flexible. Additionally, the first transmission mode consumes less power, thus reducing the UE's uplink transmission power consumption.

[0266] This application embodiment also provides another communication method, please refer to Figure 6, which is a flowchart of the method.

[0267] S601, the UE sends the first signal. Correspondingly, the network device receives the first signal.

[0268] The first signal may include, for example, an uplink reference signal, such as SRS and / or DMRS, and may also include other uplink reference signals. The network device can estimate a first parameter based on the first signal. This first parameter can be used to adjust the UE's transmission mode on a first frequency domain resource. The first parameter may also be referred to as measurement adjustment information or measurement adjustment amount, etc., and the name is not limited. The UE supports a first transmission mode and a second transmission mode. For a description of the first and second transmission modes, please refer to the embodiment shown in Figure 2. The first parameter is used to adjust the UE's transmission mode on the first frequency domain resource, and may include one or more of the following: the first parameter can be used to switch the UE's transmission mode on the first frequency domain resource from a first transmission mode to a second transmission mode; the first parameter can be used to adjust the parameters of the first transmission mode when used on the first frequency domain resource (e.g., adjusting the value of one or more parameters included in the first transmission mode when the UE uses the first transmission mode on the first frequency domain resource); or the first parameter can be used to adjust the parameters of the second transmission mode when used on the first frequency domain resource (e.g., adjusting the value of one or more parameters included in the second transmission mode when the UE uses the second transmission mode on the first frequency domain resource).

[0269] Optionally, the first parameter may include frequency offset information, such as frequency offset information of a first signal. For example, the network device can determine this frequency offset information by measuring the first signal. This frequency offset information may, for example, characterize the offset between the actual received frequency and the theoretical received frequency of the first signal; or, the frequency offset information may, for example, indicate a first frequency, which may be the frequency of the crystal oscillator corresponding to the transmission mode, for example, the UE should adjust the frequency of the crystal oscillator to the first frequency. Alternatively, the first parameter may also include other parameters, such as time-domain offset parameters of the first signal (e.g., characterizing the offset between the actual received time and the theoretical received time of the first signal), etc., as long as the parameter can be used to adjust the UE's transmission mode, it can be included in the first parameter.

[0270] The first frequency domain resources include, for example, one or more bands, one or more carriers, one or more subcarriers, one or more bandwidth parts (BWP), one or more resource block (RB) sets, one or more RBs, or one or more resource elements (REs), etc.

[0271] The first parameter is used to adjust the parameters of the first transmission mode when used with the first frequency domain resource. For example, it can be understood that the first transmission mode adjusted according to the first parameter can be used by the UE to transmit signals in the first frequency domain resource. For example, if the first frequency domain resource includes frequency band A, the UE can use the first transmission mode adjusted according to the first parameter when transmitting signals in frequency band A. The understanding of the first parameter for adjusting the parameters of the second transmission mode corresponding to the first frequency domain resource is similar.

[0272] Optionally, whether the first parameter is used to adjust the first transmission mode or the second transmission mode can be indicated by the network device. For example, the network device can indicate whether the first parameter is used to adjust the first transmission mode or the second transmission mode through the third information, which will be introduced later. Alternatively, the UE can adjust the transmission mode it is currently using based on the first parameter. For example, if the UE is currently using the first transmission mode, then the first transmission mode can be adjusted based on the first parameter without the need for indication from the network device, which helps to save signaling overhead.

[0273] S602, The network device sends third information. Correspondingly, the UE receives the third information.

[0274] The third piece of information can indicate the first parameter. Once the network device determines the first parameter, it can indicate the first parameter to the UE, so that the UE can adjust its transmission mode according to the first parameter.

[0275] Network devices can transmit third information through second frequency domain resources. Second frequency domain resources may include, for example, one or more frequency bands, one or more carriers, one or more subcarriers, one or more BWPs, one or more RB sets, one or more RBs, or one or more REs, etc.

[0276] Optionally, the second frequency domain resources can be the same as the first frequency domain resources. For example, the first and second frequency domain resources may belong to the same frequency band. This means that the network device can notify the UE to adjust the transmission mode corresponding to that frequency band through downlink information (third information) within the same frequency band. This avoids occupying too much frequency band, thus saving frequency resources.

[0277] Alternatively, the second frequency domain resource can be different from the first frequency domain resource. For example, the first and second frequency domain resources may belong to different frequency bands. For instance, the first frequency domain resource may belong to a low-frequency band, and the second frequency domain resource to a high-frequency band; or, the first frequency domain resource may belong to a high-frequency band, and the second frequency domain resource to a low-frequency band. For example, if a network device wants the UE to adjust the transmission mode (e.g., the second transmission mode) corresponding to a high-frequency band (e.g., the first frequency domain resource belongs to a high-frequency band), the network device can notify the UE through a low-frequency band (e.g., the second frequency domain resource belongs to a low-frequency band), because the transmission power consumption of the low-frequency band is lower, and the message structure is simpler.

[0278] For example, if the first frequency domain resource and the second frequency domain resource belong to the same frequency band, but these two frequency domain resources are different, they are also considered to be different from the first frequency domain resource. Optionally, the first frequency domain resource may not have a corresponding downlink frequency unit, such as in a super uplink scenario. In this case, for the transmission mode corresponding to the UE on the first frequency domain resource, the network device can indicate the adjustment through a frequency domain resource (the second frequency domain resource) that is different from the first frequency domain resource.

[0279] S603. The UE adjusts its transmission mode on the first frequency domain resource according to the first parameter.

[0280] For example, the first parameter includes frequency offset information, which indicates the offset between the actual received frequency and the theoretical received frequency of the first signal. Based on the first parameter, the UE can determine a frequency adjustment amount, and then adjust the frequency of the crystal oscillator corresponding to the first or second transmission mode according to this adjustment amount. For instance, the UE can determine the difference or sum between the frequency of the crystal oscillator corresponding to the first or second transmission mode and the frequency adjustment amount, and adjust the frequency of the crystal oscillator to that difference or sum. As another example, the first parameter includes frequency offset information indicating a first frequency, and the UE can adjust the frequency of the crystal oscillator corresponding to the first or second transmission mode to that first frequency.

[0281] In this embodiment, the UE does not need to adjust its transmission mode based on measurements of the downlink reference signal, but can adjust it based on third-party information from the network device, thus saving the UE's measurement power consumption. Furthermore, since the measurement adjustment amount is indicated by the network device, the UE's adjustment result can be made consistent with the network device's expectations, allowing the network device to better schedule the UE.

[0282] The embodiments shown in Figure 6 and Figure 2 can be applied individually or in combination. For example, the UE can adjust the first transmission mode or the second transmission mode in the embodiment shown in Figure 2 according to the embodiment shown in Figure 6.

[0283] Figure 7 shows a schematic diagram of a communication device provided in an embodiment of this application. The communication device 700 can be a UE or its circuit system as shown in the embodiments of Figure 2 or Figure 6, used to implement the method corresponding to the UE in the above method embodiments. Alternatively, the communication device 700 can be a network device or its circuit system as shown in the embodiments of Figure 2 or Figure 6, used to implement the method corresponding to the network device in the above method embodiments. For example, one type of circuit system is a chip system.

[0284] The communication device 700 includes at least one processor 701. The processor 701 can be used for internal processing within the device to implement certain control processing functions. Optionally, the processor 701 includes instructions. Optionally, the processor 701 can store data. Optionally, different processors can be independent devices, located in different physical locations, or located on different integrated circuits. Optionally, different processors can be integrated into one or more processors, for example, integrated on one or more integrated circuits.

[0285] Optionally, the communication device 700 includes one or more memories 703 for storing instructions. Optionally, the memories 703 may also store data. The processor and the memories may be separate or integrated together.

[0286] Optionally, the communication device 700 includes a communication line 702 and at least one communication interface 704. Since the memory 703, communication line 702, and communication interface 704 are all optional, they are all represented by dashed lines in Figure 7.

[0287] Optionally, the communication device 700 may further include a transceiver and / or an antenna. The transceiver can be used to send information to or receive information from other devices. The transceiver may be referred to as a transceiver unit, transceiver circuit, input / output interface, etc., and is used to realize the transmission and reception functions of the communication device 700 via the antenna. Optionally, the transceiver includes a transmitter and a receiver. For example, the transmitter can be used to generate a radio frequency (RF) signal from a baseband signal, and the receiver can be used to convert the RF signal back into a baseband signal.

[0288] The processor 701 may include a general-purpose central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits for controlling the execution of programs according to the present application.

[0289] Communication line 702 may include a path for transmitting information between the aforementioned components.

[0290] The communication interface 704 uses any transceiver-like device for communicating with other devices or communication networks, such as Ethernet, radio access network (RAN), wireless local area network (WLAN), wired access network, etc.

[0291] The memory 703 may be a read-only memory (ROM) or other type of static storage device capable of storing static information and instructions, random access memory (RAM) or other type of dynamic storage device capable of storing information and instructions, or it may be an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (including compressed optical discs, laser discs, optical discs, digital versatile optical discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium capable of carrying or storing desired program code in the form of instructions or data structures and accessible by a computer, but is not limited thereto. The memory 703 may exist independently and be connected to the processor 701 via communication line 702. Alternatively, the memory 703 may be integrated with the processor 701.

[0292] The memory 703 stores computer execution instructions for implementing the scheme of this application, and the processor 701 controls the execution of these instructions. The processor 701 executes the computer execution instructions stored in the memory 703 to implement the steps performed by the UE or network device in the embodiments shown in FIG2 or FIG6.

[0293] Optionally, the computer execution instructions in the embodiments of this application may also be referred to as application code, and the embodiments of this application do not specifically limit this.

[0294] In a specific implementation, as one example, processor 701 may include one or more CPUs, such as CPU0 and CPU1 in FIG7.

[0295] In a specific implementation, as one embodiment, the communication device 700 may include multiple processors, such as processors 701 and 705 in FIG. 7. Each of these processors may be a single-core (single-CPU) processor or a multi-core (multi-CPU) processor. Here, a processor may refer to one or more devices, circuits, and / or processing cores for processing data (e.g., computer program instructions).

[0296] When the device shown in Figure 7 is a chip, such as a UE chip or a network device chip, the chip includes a processor 701 (and may also include a processor 705), a communication line 702, and a communication interface 704. Optionally, it may include a memory 703. Specifically, the communication interface 704 may be an input interface, pins, or circuits, etc. The memory 703 may be a register, cache, etc. The processor 701 and processor 705 may be a general-purpose CPU, microprocessor, ASIC, or one or more integrated circuits for controlling the execution of a program that controls the communication method of any of the above embodiments.

[0297] This application embodiment can divide the device into functional modules according to the above method examples. For example, each function can be divided into its own functional modules, or two or more functions can be integrated into one processing module. The integrated modules can be implemented in hardware or software functional modules. It should be noted that the module division in this application embodiment is illustrative and only represents one logical functional division. In actual implementation, there may be other division methods. For example, when dividing each functional module according to its own function, Figure 8 is a schematic diagram of a device. This device 800 can be the UE or network device involved in the above method embodiments, or a chip in the UE or a chip in the network device. The device 800 includes a processing unit 802 and a transceiver unit 801.

[0298] It should be understood that the device 800 can be used to implement the steps performed by the UE or network device in the communication method of the embodiments of this application. The relevant features can be referred to the embodiments shown in Figure 2 or Figure 6 above, and will not be repeated here.

[0299] Optionally, the functions / implementation processes of the transceiver unit 801 and processing unit 802 in Figure 8 can be implemented by the processor 701 in Figure 7 calling computer execution instructions stored in memory 703. Alternatively, the functions / implementation processes of the processing unit 802 in Figure 8 can be implemented by the processor 701 in Figure 7 calling computer execution instructions stored in memory 703, and the functions / implementation processes of the transceiver unit 801 in Figure 8 can be implemented by the communication interface 704 in Figure 7.

[0300] Optionally, when the device 800 is a chip or circuit, the function / implementation process of the transceiver unit 801 can also be implemented through pins or circuits. Optionally, the transceiver unit 801 may include a transmitting unit and / or a receiving unit, whereby the transmitting unit implements the transmitting function and the receiving unit implements the receiving function; or, the transceiver unit 801 may be an integral module capable of implementing both transmitting and / or receiving functions. Optionally, the transceiver unit 801 can be implemented using a transceiver.

[0301] This application also provides a computer-readable storage medium storing a computer program or instructions that, when executed, implement the methods performed by the UE or network device in the aforementioned method embodiments. Thus, the functions described in the above embodiments can be implemented as software functional units and sold or used as independent products. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to it, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, ROM, RAM, magnetic disks, or optical disks.

[0302] This application also provides a computer program product comprising: computer program code, which, when run on a computer, causes the computer to perform the method executed by the UE or network device in any of the foregoing method embodiments.

[0303] This application also provides a processing apparatus, including a processor and an interface; the processor is used to execute the methods performed by the UE or network device involved in any of the above method embodiments.

[0304] In the above embodiments, implementation can be achieved entirely or partially through software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented entirely or partially in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of this application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that integrates one or more available media. The available medium can be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid-state disk (SSD)).

[0305] The various illustrative logic units and circuits described in the embodiments of this application can be implemented or operate the described functions using a general-purpose processor, digital signal processor (DSP), ASIC, field-programmable gate array (FPGA), or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof. The general-purpose processor can be a microprocessor; alternatively, it can be any conventional processor, controller, microcontroller, or state machine. The processor can also be implemented using a combination of computing devices, such as a digital signal processor and a microprocessor, multiple microprocessors, one or more microprocessors combined with a digital signal processor core, or any other similar configuration.

[0306] The steps of the methods or algorithms described in the embodiments of this application can be directly embedded in hardware, software units executed by a processor, or a combination of both. The software units can be stored in RAM, flash memory, ROM, erasable programmable read-only memory (EPROM), EEPROM, registers, hard disks, removable disks, CD-ROMs, or any other form of storage medium in the art. Exemplarily, the storage medium can be connected to the processor so that the processor can read information from the storage medium and write information to the storage medium. Optionally, the storage medium can also be integrated into the processor. The processor and storage medium can be disposed in an ASIC, which can be disposed in the terminal device. Optionally, the processor and storage medium can also be disposed in different components of the terminal device.

[0307] These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer-implemented process, such that the instructions, which execute on the computer or other programmable apparatus, provide steps for implementing the functions specified in one or more flowcharts and / or one or more block diagrams.

[0308] The contents of the various embodiments of this application can be referenced to each other. Unless otherwise specified or there is a logical conflict, the terms and / or descriptions between different embodiments are consistent and can be referenced to each other. The technical features in different embodiments can be combined to form new embodiments according to their inherent logical relationship.

[0309] It is understood that in the embodiments of this application, the UE and / or network device may perform some or all of the steps in the embodiments of this application. These steps or operations are merely examples. In the embodiments of this application, other operations or variations of various operations may also be performed. Furthermore, the steps may be performed in different orders as presented in the embodiments of this application, and it is not necessary to perform all the operations in the embodiments of this application.

Claims

1. A communication method characterized by comprising: The method includes: A first signal is transmitted through a first transmission mode, wherein the terminal supports the first transmission mode and a second transmission mode, the first transmission mode and the second transmission mode are different, and the power consumption of the terminal in the first transmission mode is lower than the power consumption of the terminal in the second transmission mode.

2. The method of claim 1, wherein, The first transmission mode satisfies one or more of the following: The first maximum transmission power is less than the first threshold, and the first maximum transmission power is the maximum transmission power corresponding to the first transmission mode; The accuracy of the corresponding crystal oscillator is lower than or equal to the second threshold. The transmission link corresponding to the first transmission mode does not include a digital predistortion (DPD) module and / or an IQ offset calibration (IQMC) module; Supported modulation orders are less than or equal to the modulation order corresponding to 16 quadrature amplitude modulation (QAM), or less than or equal to the modulation order corresponding to 64 QAM; or, Corresponding to a single-carrier waveform.

3. The method of claim 2, wherein, The first threshold is less than or equal to 23 dBm.

4. The method according to claim 2 or 3, characterized in that, The first maximum transmit power is 10 dBm.

5. The method according to any one of claims 1 to 4, characterized in that, The first transmission mode corresponds to the first power category, and the first power category corresponds to the first maximum transmission power.

6. The method according to any one of claims 1 to 5, characterized in that, The second transmission mode satisfies one or more of the following: The second maximum transmission power is greater than or equal to the first threshold, and the second maximum transmission power is the maximum transmission power corresponding to the second transmission mode; The corresponding crystal oscillator has a precision higher than the second threshold. The transmission link corresponding to the second transmission mode includes a DPD module and / or an IQMC module; Supported modulation orders greater than those corresponding to 16QAM, or greater than those corresponding to 64QAM; or, The waveforms correspond to the Discrete Fourier Transform spread spectrum orthogonal frequency division multiplexing (DFT-s-OFDM) waveforms, or cyclic prefix orthogonal frequency division multiplexing (CP-OFDM) waveforms.

7. The method according to any one of claims 1 to 6, characterized in that, The limitations imposed on the transmission link by the indicators of the first transmission mode are less than the limitations imposed on the transmission link by the indicators of the second transmission mode.

8. The method of claim 7, wherein, The indicators for the first transmission mode include one or more of the following: frequency error, in-band indicators, or out-of-band indicators.

9. The method of claim 8, wherein, The frequency error corresponding to the first transmission mode is greater than the frequency error corresponding to the second transmission mode, wherein... The frequency error corresponding to the second transmission mode is ±0.1 PPM; The frequency error corresponding to the first transmission mode is ±1PPM, ±5PPM, ±10PPM, or ±20PPM.

10. The method according to any one of claims 1 to 9, characterized in that, The first transmission mode corresponds to an RF modulation transmitter, which includes a phase shift keying (PSK) modulation transmitter, a frequency shift keying (FSK) modulation transmitter, or an on / off keying (OOK) modulation transmitter.

11. The method according to claim 10, characterized in that, The time domain symbol length of the first signal is an orthogonal frequency division multiplexing (OFDM) symbol length where N is a positive integer.

12. A communication method characterized by comprising: The method includes: The terminal receives a first signal, which corresponds to a first transmission mode. The terminal supports the first transmission mode and a second transmission mode. The first transmission mode and the second transmission mode are different. The power consumption of the terminal in the first transmission mode is lower than the power consumption of the terminal in the second transmission mode.

13. The method of claim 12, wherein, The first transmission mode satisfies one or more of the following: The first maximum transmission power is less than the first threshold, and the first maximum transmission power is the maximum transmission power corresponding to the first transmission mode; The accuracy of the corresponding crystal oscillator is lower than or equal to the second threshold. The transmission link corresponding to the first transmission mode does not include the DPD module and / or the IQMC module; Supported modulation orders are less than or equal to the modulation order corresponding to 16QAM, or less than or equal to the modulation order corresponding to 64QAM; or, Corresponding to a single-carrier waveform.

14. The method of claim 13, wherein, The first threshold is less than or equal to 23 dBm.

15. The method according to claim 13 or 14, characterized in that, The first maximum transmit power is 10 dBm.

16. The method according to any one of claims 12 to 15, characterized in that, The first transmission mode corresponds to the first power category, and the first power category corresponds to the first maximum transmission power.

17. The method according to any one of claims 12 to 16, characterized in that, The second transmission mode satisfies one or more of the following: The second maximum transmission power is greater than or equal to the first threshold, and the second maximum transmission power is the maximum transmission power corresponding to the second transmission mode; The corresponding crystal oscillator has a precision higher than the second threshold. The transmission link corresponding to the second transmission mode includes a DPD module and / or an IQMC module; Supported modulation orders greater than those corresponding to 16QAM, or greater than those corresponding to 64QAM; or, Corresponding to DFT-s-OFDM waveform or CP-OFDM waveform.

18. The method according to any one of claims 12 to 17, characterized in that, The limitations imposed on the transmission link by the indicators of the first transmission mode are less than the limitations imposed on the transmission link by the indicators of the second transmission mode.

19. The method of claim 18, wherein, The indicators for the first transmission mode include one or more of the following: frequency error, in-band indicators, or out-of-band indicators.

20. The method of claim 19, wherein, The frequency error corresponding to the first transmission mode is greater than the frequency error corresponding to the second transmission mode, wherein... The frequency error corresponding to the second transmission mode is ±0.1 PPM; The frequency error corresponding to the first transmission mode is ±1PPM, ±5PPM, ±10PPM, or ±20PPM.

21. The method according to any one of claims 12 to 20, characterized in that, The first transmission mode corresponds to an RF modulation transmitter, which includes a PSK modulation transmitter, an FSK modulation transmitter, or an OOK modulation transmitter.

22. The method according to claim 21, characterized in that, The time domain symbol length of the first signal is OFDM symbol length where N is a positive integer.

23. The method of any one of claims 12-22, wherein, Receiving the first signal includes: Receive a second signal, the second signal including the first signal and a third signal, the third signal corresponding to the second transmission mode.

24. The method of claim 23, wherein, The method further includes: The third signal is obtained by removing the first signal from the second signal; Demodulate the third signal.

25. The method of claim 23 or 24, wherein, The method further includes: Based on the fact that the frequency offset of the first signal is less than or equal to a fourth threshold, the first signal is determined to correspond to the first transmission mode; or, Receive first information from a first terminal, the first information indicating that a signal from the first terminal corresponds to the first transmission mode, wherein the first signal originates from the first terminal; or, The first signal is determined to be carried by a first resource, and the first resource corresponds to the first transmission mode.

26. The method of claim 23 or 24, wherein, The second signal also includes a fourth signal corresponding to the first transmission mode. The first signal is removed from the second signal to obtain a third signal, including: The first signal and the fourth signal are removed from the second signal in descending order of the received energy corresponding to the first signal and the fourth signal, respectively.

27. A communications device, characterized by The communication device includes a module for performing the method as described in any one of claims 1 to 11, or a module for performing the method as described in any one of claims 12 to 26.

28. A communications device, characterized by The communication device includes a processor, which is configured to perform the method as described in any one of claims 1 to 11, or the method as described in any one of claims 12 to 26.

29. A computer-readable storage medium, characterized in that, The computer-readable storage medium is used to store a computer program that, when run on a computer, causes the method as described in any one of claims 1 to 11 to be performed, or causes the method as described in any one of claims 12 to 26 to be performed.

30. A computer program product, characterized in that, The computer program product includes a computer program that, when run on a computer, causes the computer to perform the method as described in any one of claims 1 to 11, or causes the computer to perform the method as described in any one of claims 12 to 26.

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