Communication method and apparatus

Abstract

A communication method and apparatus. The communication method comprises: a network device determining a first transmission power on the basis of a first power backoff amount, wherein the first transmission power is used by a terminal device to send a first uplink reference signal on a first time-domain unit, and the first power backoff amount is determined on the basis of the number of reference signal ports corresponding to the first time-domain unit. Power reduced due to a PAPR is compensated for by means of a first power backoff amount, such that the transmission power on a first time-domain unit is increased, thereby increasing the signal-to-noise ratio of a reference signal and improving the quality of signal transmissions.

Description

A communication method and apparatus

[0001] Cross-references to related applications

[0002] This application claims priority to Chinese Patent Application No. 202410532493.7, filed on April 26, 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] In the current method of transmitting the sounding reference signal (SRS), each SRS port corresponds to one antenna of the user equipment (UE). Each antenna of the UE independently transmits the SRS signal to perform measurements across the entire band. Because the SRS is transmitted across the entire band, the UE's energy needs to be distributed across the entire band, resulting in a large energy overhead; and the energy distribution of the UE leads to a lower transmission power, resulting in a lower signal-to-noise ratio of the SRS signal. Summary of the Invention

[0005] This application provides a communication method and apparatus for improving the signal-to-noise ratio of a reference signal.

[0006] In a first aspect, a first communication method is provided, which can be applied to a network device. The 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 the system-on-a-chip or functional module is, for example, disposed within the network equipment. The network equipment includes, for example, core network equipment and / or access network equipment. The method includes: determining a first transmission power based on a first power back-off amount, the first transmission power being used by a terminal device to transmit a first uplink reference signal in a first time domain unit, wherein the first power back-off amount is determined based on the number of reference signal ports corresponding to the first time domain unit.

[0007] This application employs beamforming (BF) technology, combining the antennas of the terminal device into reference signal ports. These reference signal ports allow for measurement of the beam of interest, eliminating the need to measure all beams. This focuses the terminal device's energy in specific directions, reducing energy consumption and improving the signal-to-noise ratio (SNR). Furthermore, this application considers the number of reference signal ports corresponding to a time-domain unit to be related to the transmit power of that time-domain unit. For example, the number of reference signal ports affects the peak-to-average power ratio (PAPR) of the reference signal carried by that time-domain unit. Therefore, a power back-off amount (e.g., a first power back-off amount) can be determined based on the number of reference signal ports corresponding to the first time-domain unit. This power back-off amount determines the transmit power corresponding to the first time-domain unit, referred to as the first transmit power. This power back-off amount effectively compensates for the power reduction caused by PAPR, increasing the transmit power of the first time-domain unit and thus improving the SNR and signal transmission quality.

[0008] In one optional implementation, the more reference signal ports corresponding to the first time domain unit, the greater the first power back-off amount. This application embodiment considers that the transmission power of a time domain unit is related to the number of reference signal ports corresponding to that time domain unit. For example, the more reference signal ports corresponding to a time domain unit, the more reference signals are superimposed on that time domain unit, thus the higher the PAPR of the reference signals carried by that time domain unit, and the lower the transmission power of that time domain unit. Therefore, in order to compensate for the transmission power, the more reference signal ports corresponding to the first time domain unit, the greater the first power back-off amount corresponding to the first time domain unit, thereby achieving a better compensation effect.

[0009] In one optional implementation, the first power back-off amount satisfies the following relationship: β = 10lgR, or β = 10lgR + c; where β represents the first power back-off amount, R represents the number of reference signal ports corresponding to the first time-domain unit, lgR represents the logarithm of R to base 10, and c represents a constant. The first power back-off amount can be related to the number of reference signal ports, thus satisfying the above relationship. Alternatively, the first power back-off amount can also satisfy other relationships, such as being related to other parameters (e.g., parameters that can affect PAPR) in addition to the number of reference signal ports, without limitation.

[0010] In one optional implementation, the first transmission power satisfies the following relationship: Among them, P RSP represents the first transmission power. CMAX This indicates the maximum output power of the terminal device. The open-loop target received power of the reference signal port is represented by P1, which represents other power back-off amounts besides the first power back-off amount, and β represents the first power back-off amount. This is an optional implementation of the first transmit power.

[0011] In one optional implementation, the first transmission power satisfies the following relationship: Among them, P RS This indicates the first transmission power. This represents the open-loop information determined by the open-loop target received power and semi-static path loss estimation, where h represents the power control offset state value, Δ represents the adjustment amount, and P... CMAX β represents the maximum output power of the terminal device, μ represents the first power back-off amount, and μ represents the subcarrier spacing. This is an optional implementation of the first transmit power; for example, this relationship can be an implementation of the previous relationship.

[0012] In an optional implementation, the method further includes sending indication information to the terminal device, the indication information indicating the first transmission power. After determining the first transmission power, the network device can inform the terminal device, enabling the terminal device to send an uplink reference signal accordingly.

[0013] In an optional implementation, the method further includes: receiving the first uplink reference signal from the terminal device in the first time domain unit. The first transmit power corresponds to the first time domain unit, therefore the network device can receive the first uplink reference signal in the first time domain unit, and the terminal device transmits the first uplink reference signal at the first transmit power.

[0014] Secondly, a second communication method is provided, which can be applied to 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 can implement the functions of the terminal equipment, and which is, for example, disposed within the terminal equipment. The method includes: receiving indication information, the indication information indicating a first transmission power, the first transmission power satisfying the following relationship: Among them, P RS P represents the first transmission power.CMAX This indicates the maximum output power of the terminal device. P1 represents the open-loop target received power of the reference signal port, P1 represents the power back-off amount other than the first power back-off amount, and β represents the first power back-off amount, wherein the first power back-off amount is determined based on the number of reference signal ports corresponding to the first time domain unit.

[0015] In one optional implementation, the first power back-off amount satisfies the following relationship: β = 10lgR; where β represents the first power back-off amount, R represents the number of reference signal ports corresponding to the first time domain unit, and lgR represents the logarithm of R to the base 10.

[0016] In one optional implementation, the first transmission power satisfies the following relationship: Among them, P RS This indicates the first transmission power. This represents the open-loop information determined by the open-loop target received power and semi-static path loss estimation, where h represents the power control offset state value, Δ represents the adjustment amount, and P... CMAX β represents the maximum output power of the terminal device, μ represents the first power back-off amount, and μ represents the subcarrier spacing.

[0017] In an optional implementation, the method further includes: transmitting a first uplink reference signal in the first time domain unit at the first transmit power.

[0018] For the technical effects of the second aspect or various alternative implementation methods, please refer to the introduction of the technical effects of the first aspect or corresponding implementation methods.

[0019] Thirdly, a third communication method is provided, which can be applied to 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 method includes: transmitting first information, the first information indicating the number of reference signal ports corresponding to a time-domain unit.

[0020] This application employs BF (Browser-Focused) technology, combining the antennas of the terminal device into a reference signal port. This reference signal port allows for measurement of the beam of interest without needing to measure all beams, thus focusing the terminal device's energy in a specific direction, reducing energy consumption, and improving the signal-to-noise ratio. Furthermore, in this application embodiment, the network device can indicate the time-domain distribution of the reference signal port to the terminal device, enabling the terminal device to clearly understand the time-domain distribution of the reference signal port and transmit reference signals through it.

[0021] In an alternative implementation, the first information is included in a first message used to configure at least one reference signal port. The first information can be included in an existing message, thereby saving signaling overhead.

[0022] In one optional implementation, the first information is included in the configuration information of a first reference signal port among the at least one reference signal port. The first information may be included in the configuration information of a certain reference signal port, or it may be included in the first message but not in the configuration information of the window signal port, offering greater flexibility.

[0023] In an optional implementation, the first information is further used to indicate the code division offset corresponding to the first reference signal port. Embodiments of this application can employ time-domain convergence technology. For example, if multiple reference signal ports transmit reference signals on a single time-domain unit, the reference signals transmitted by these multiple reference signal ports can reduce interference through code division. For instance, reference signals transmitted by different reference signal ports can be spread using different orthogonal mask sequences for code division multiplexing. Therefore, the number of code division methods corresponding to a time-domain unit can be equal to the number of reference signal ports corresponding to that time-domain unit. The code division offset corresponding to a time-domain unit represents the number of code division methods corresponding to that time-domain unit, and thus characterizes the number of reference signal ports corresponding to that time-domain unit.

[0024] In one optional implementation, the first information is used to indicate the number of reference signal ports corresponding to a time-domain unit, including: when the value of the first information satisfies When the quantity is R, p represents the value of the first information, and the value of p ranges from [0, P-1], where P-1 represents the maximum value of the code division offset. This indicates that x is rounded down, and L represents the number of configured reference signal ports. This is one example of how the first information indicates the number of reference signal ports; however, the first information can also indicate the number of reference signal ports corresponding to a time-domain unit in other ways.

[0025] In one optional implementation, L = 4, wherein when the value of the first information satisfies When the quantity is 1; or, when the value of the first information satisfies When the quantity is 2; or, when the value of the first information satisfies At that time, the quantity was 4.

[0026] Fourthly, a fourth communication method is provided, which can be applied to 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 SoC chip or SIP chip containing a modem core) or other functional module, which is capable of implementing the functions of the terminal equipment, and is, for example, disposed within the terminal equipment. The method includes: receiving first information, the first information indicating the number of reference signal ports corresponding to a time-domain unit.

[0027] In one alternative implementation, the first information is included in a first message, which is used to configure at least one reference signal port.

[0028] In one alternative implementation, the first information includes configuration information of the first reference signal port in the at least one reference signal port.

[0029] In an alternative implementation, the first information is further used to indicate the code division offset corresponding to the first reference signal port.

[0030] In one optional implementation, the first information is used to indicate the number of reference signal ports corresponding to a time-domain unit, including: when the value of the first information satisfies When the quantity is R, p represents the value of the first information, and the value of p ranges from [0, P-1], where P-1 represents the maximum value of the code division offset. This indicates that x is rounded down, and L represents the number of configured reference signal ports.

[0031] In one optional implementation, L = 4, wherein when the value of the first information satisfies When the quantity is 1; or, when the value of the first information satisfies When the quantity is 2; or, when the value of the first information satisfies At that time, the quantity was 4.

[0032] For the technical effects of the fourth aspect or various alternative implementation methods, please refer to the introduction of the technical effects of the third aspect or corresponding implementation methods.

[0033] Fifthly, a fifth communication method is provided, which can be applied to a terminal device. This terminal device is, for example, a terminal equipment, or other equipment including terminal equipment functions, or a circuit, or a chip system (or chip, such as a modem chip, also known as a baseband chip, or a SoC chip or SIP chip containing a modem core) or other functional module, which can realize the functions of the terminal equipment, and is, for example, disposed within the terminal equipment. The method includes: repeatedly transmitting a first uplink reference signal in N time-domain units through a first reference signal port, the first uplink reference signal occupying M time-domain units, where M is a positive integer and N is an integer multiple of M, wherein the first reference signal port is formed by at least one antenna of the terminal device according to corresponding weights, the at least one antenna including a first antenna, the weight of the first antenna being a first weight, and the first reference signal port corresponding to the first weight in each of the N time-domain units.

[0034] This application employs BF (Broadcast Fraction) technology, combining the antennas of the terminal device into a reference signal port. This reference signal port allows for measurement of the beam of interest without requiring measurement of all beams, thus focusing the terminal device's energy in a specific direction, reducing energy consumption, and improving the signal-to-noise ratio. Furthermore, in this application embodiment, the weights of the antennas constituting the first reference signal port across the N time-domain units remain unchanged, enabling the receiver of the first uplink reference signal (e.g., a network device) to correctly despread the first uplink reference signal.

[0035] In one alternative implementation, the first antenna is any one of the at least one antennas. For example, for each of the at least one antennas, the first reference signal port corresponds to the same weight in each of the N time-domain units, such that the weights of each antenna constituting the first reference signal port in the N time-domain units remain unchanged, thereby enabling the receiver (e.g., a network device) of the first uplink reference signal to correctly despread the first uplink reference signal.

[0036] In one optional implementation, the difference in channel quality between the first uplink reference signals carried by different M time-domain units is less than or equal to a first threshold. If the channel quality difference between different first uplink reference signals is large, it may also lead to despreading failure at the receiver (e.g., a network device). Therefore, in this embodiment, the channel quality of the first uplink reference signals can be made equal or have a small difference, enabling the network device to correctly despread the first uplink reference signals.

[0037] Sixthly, a sixth communication method is provided, which can be applied to a network device. The network device is, for example, a network equipment, or other equipment including network equipment functions, or a circuit, or a chip system (or chip) or other functional module capable of implementing the functions of the network equipment, and the chip system or functional module is, for example, disposed within the network equipment. The network equipment includes, for example, core network equipment and / or access network equipment. The method includes: repeatedly receiving a first uplink reference signal in N time-domain units, the first uplink reference signal occupying M time-domain units, where M is a positive integer and N is an integer multiple of M, wherein the first uplink reference signal corresponds to a first reference signal port, the first reference signal port is constructed by at least one antenna of the terminal device according to corresponding weights, the at least one antenna including a first antenna, the weight of the first antenna being a first weight, and the first reference signal port corresponding to the first weight in each of the N time-domain units.

[0038] In one alternative implementation, the first antenna is any one of the at least one antenna.

[0039] In one optional implementation, the difference in channel quality between the first uplink reference signals carried by different M time-domain units is less than or equal to a first threshold.

[0040] For the technical effects of the sixth aspect or various alternative implementations, please refer to the description of the technical effects of the fifth aspect or corresponding implementations.

[0041] A seventh aspect provides a seventh communication method applicable to a terminal device. This terminal device may be, 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 SoC chip or SIP chip containing a modem core) or other functional module, which is capable of implementing the functions of the terminal equipment, and is, for example, disposed within the terminal equipment. The method includes: transmitting a first uplink reference signal in K1 sub-time domain units through a first reference signal port, and transmitting a second uplink reference signal in K2 sub-time domain units through a second reference signal port, wherein the K1 sub-time domain units are consecutive, the K2 sub-time domain units are consecutive, and the K2 sub-time domain units are located after the K1 sub-time domain units.

[0042] This application employs BF (Broadcast Spectrum) technology, combining the antennas of the terminal device into a reference signal port. This port allows for measurement of the beam of interest without requiring measurement of all beams, thus focusing the terminal device's energy in a specific direction, reducing energy consumption, and improving the signal-to-noise ratio (SNR). Furthermore, this application combines time-domain convergence (TDC) technology with BF, for example, by making the sub-time-domain units corresponding to the same reference signal port continuous. This helps reduce fluctuations in the reference signal transmitted from the same reference signal port, improving the SNR of the transmitted reference signal, reducing despreading loss at the reference signal receiver, and enhancing signal transmission quality.

[0043] In one optional implementation, the K1 sub-time domain units and the K2 sub-time domain units are located within the same time domain unit, or the time domain unit containing the K2 sub-time domain units is located after the time domain unit containing the K1 sub-time domain units. Time domain units corresponding to different reference signal ports can be located within the same time domain unit or in different time domain units. Time domain units corresponding to the same reference signal port can be located within the same time domain unit or in different time domain units.

[0044] In one alternative implementation, the first reference signal port is formed by at least one antenna of the terminal device according to corresponding weights, and the second reference signal port is formed by at least one antenna of the terminal device according to corresponding weights.

[0045] Eighthly, an eighth communication method is provided, which can be applied to a network device. The 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 the system-on-a-chip or functional module is, for example, disposed within the network equipment. The network equipment includes, for example, core network equipment and / or access network equipment. The method includes: receiving a first uplink reference signal in K1 sub-time domain units, and receiving a second uplink reference signal in K2 sub-time domain units, wherein the first uplink reference signal corresponds to a first reference signal port, the second uplink reference signal corresponds to a second reference signal port, the K1 sub-time domain units are consecutive, the K2 sub-time domain units are consecutive, and the K2 sub-time domain units are located after the K1 sub-time domain units.

[0046] In one optional implementation, the K1 sub-time domain units and the K2 sub-time domain units are located within one time domain unit, or the time domain unit containing the K2 sub-time domain units is located after the time domain unit containing the K1 sub-time domain units.

[0047] In one alternative implementation, the first reference signal port is formed by at least one antenna of the terminal device according to corresponding weights, and the second reference signal port is formed by at least one antenna of the terminal device according to corresponding weights.

[0048] For the technical effects of the eighth aspect or various alternative implementations, please refer to the description of the technical effects of the seventh aspect or corresponding implementations.

[0049] Ninthly, a communication device is provided. The communication device may be a network device as described in any of the first to eighth aspects above. The communication device possesses the functions of the aforementioned network device. For example, the communication device is capable of implementing the functions described in any of the first to eighth aspects above. For instance, the communication device includes modules, units, or means corresponding to the operations described in any of the first to eighth 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, such as a network equipment, or other equipment including network equipment functions, or a chip system (or chip or circuit) or other functional module capable of implementing the functions of a network equipment. This chip system or functional module is, for example, disposed within a network equipment. The network equipment includes, for example, core network equipment and / or access network equipment. 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.

[0050] In one optional implementation, the processing unit is configured to determine a first transmission power based on a first power back-off amount, the first transmission power being used by the terminal device to transmit a first uplink reference signal in a first time domain unit, wherein the first power back-off amount is determined based on the number of reference signal ports corresponding to the first time domain unit.

[0051] In one optional implementation, the transceiver unit (or the transmitting unit) is configured to transmit first information, the first information being used to indicate the number of reference signal ports corresponding to a time domain unit.

[0052] In one optional implementation, the transceiver unit (or the receiving unit) is configured to repeatedly receive a first uplink reference signal in N time-domain units. The first uplink reference signal occupies M time-domain units, where M is a positive integer and N is an integer multiple of M. The first uplink reference signal corresponds to a first reference signal port, which is formed by at least one antenna of the terminal device according to corresponding weights. The at least one antenna includes a first antenna, and the weight of the first antenna is a first weight. The first reference signal port corresponds to the first weight in all N time-domain units.

[0053] In one optional implementation, the transceiver unit (or the receiving unit) is configured to receive a first uplink reference signal in K1 sub-time domain units and a second uplink reference signal in K2 sub-time domain units, wherein the first uplink reference signal corresponds to a first reference signal port, the second uplink reference signal corresponds to a second reference signal port, the K1 sub-time domain units are consecutive, the K2 sub-time domain units are consecutive, and the K2 sub-time domain units are located after the K1 sub-time domain units.

[0054] 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 one of the first to eighth aspects above.

[0055] In a tenth aspect, a communication device is provided. The communication device may be a terminal device as described in any one of the first to eighth aspects above. The communication device possesses the functions of the aforementioned terminal device. For example, the communication device has the functions described in any one of the first to eighth aspects above. For example, the communication device includes modules, units, or means corresponding to the operations described in any one of the first to eighth aspects above. These modules, units, or means can be implemented in software, hardware, or a combination of software and hardware. The communication device may be, for example, a terminal device, such as a terminal equipment, or other equipment including terminal equipment functions, or a chip system (or chip or circuit) or other functional module capable of implementing the functions of a terminal equipment. This chip system or functional module may be, for example, disposed within a terminal equipment. 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 ninth aspect.

[0056] In one optional implementation, the transceiver unit (or the receiving unit) is configured to receive indication information, the indication information being used to indicate a first transmission power, the first transmission power satisfying the following relationship: Among them, P RS P represents the first transmission power. CMAX This indicates the maximum output power of the terminal device. P1 represents the open-loop target received power of the reference signal port, P1 represents the power back-off amount other than the first power back-off amount, and β represents the first power back-off amount, wherein the first power back-off amount is determined based on the number of reference signal ports corresponding to the first time domain unit.

[0057] In one optional implementation, the transceiver unit (or the receiving unit) is configured to receive first information, the first information being used to indicate the number of reference signal ports corresponding to a time domain unit.

[0058] In one optional implementation, the transceiver unit (or the transmitting unit) is configured to repeatedly transmit a first uplink reference signal in N time domain units through a first reference signal port. The first uplink reference signal occupies M time domain units, where M is a positive integer and N is an integer multiple of M. The first reference signal port is formed by at least one antenna of the terminal device according to corresponding weights. The at least one antenna includes a first antenna, and the weight of the first antenna is a first weight. The first reference signal port corresponds to the first weight in each of the N time domain units.

[0059] In one optional implementation, the transceiver unit (or the transmitting unit) is configured to transmit a first uplink reference signal in K1 sub-time domain units via a first reference signal port, and to transmit a second uplink reference signal in K2 sub-time domain units via a second reference signal port, wherein the K1 sub-time domain units are consecutive, the K2 sub-time domain units are consecutive, and the K2 sub-time domain units are located after the K1 sub-time domain units.

[0060] 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 one of the first to eighth aspects above.

[0061] Eleventhly, 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 any of the first to eighth aspects described above. The one or more processors are executable to carry out the computer program or instructions, such that, when executed, the communication device implements the methods in any possible design or implementation of any of the first to eighth aspects described above.

[0062] 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.

[0063] In one possible design, the communication device may also include the memory.

[0064] The aforementioned communication device may be a network device, which may be a network equipment, a communication module in a network equipment, or a chip in a network equipment 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.

[0065] In a twelfth aspect, 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 any of the first to eighth aspects described above. The one or more processors are executable to carry out 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 any of the first to eighth aspects described above.

[0066] 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.

[0067] In one possible design, the communication device may also include the memory.

[0068] The aforementioned communication device may be a terminal device, such as a terminal equipment, a communication module in a terminal equipment, or a chip in a terminal equipment 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.

[0069] In a thirteenth aspect, a communication system is provided, including a network device, wherein the network device is configured to perform the method described in any one of the first to eighth aspects. For example, the network device may be implemented using the communication device described in the ninth or eleventh aspect.

[0070] Optionally, the communication system further includes a terminal device, wherein the terminal device is used to perform the method described in any one of the first to eighth aspects. For example, the terminal device can be implemented using the communication device described in the tenth or twelfth aspect.

[0071] In a fourteenth 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.

[0072] In a fifteenth aspect, a computer program product containing instructions is provided, which, when the computer program or instructions are run on a computer, causes the methods described in the above aspects to be implemented.

[0073] In a sixteenth 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

[0074] Figure 1 is a schematic diagram of an application scenario according to an embodiment of this application;

[0075] Figure 2 is a schematic diagram of a reference signal port according to an embodiment of this application;

[0076] Figures 3, 4, 7, and 9 are flowcharts of several communication methods provided in the embodiments of this application;

[0077] Figures 5A to 5C are schematic diagrams of several time-domain distribution methods of the reference signal port in the embodiments of this application;

[0078] Figure 6 is a schematic diagram of a reference signal port repeatedly transmitting a reference signal in multiple time domain units in an embodiment of this application;

[0079] Figure 8 is a schematic diagram of an embodiment of the present application in which the antenna constituting the first reference signal port maintains a constant weight across multiple time domain units;

[0080] Figure 10 is a schematic diagram of a device provided in an embodiment of this application;

[0081] Figure 11 is a schematic diagram of another device provided in an embodiment of this application. Detailed Implementation

[0082] 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.

[0083] 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.

[0084] 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. For example, S301 may occur before S302, or may occur after S302, or may occur simultaneously with S302.

[0085] 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.

[0086] 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.

[0087] Furthermore, in this embodiment, the terminal device can also be a terminal device in an 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.

[0088] 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.

[0089] The terminal equipment may sometimes be referred to as user equipment (UE), terminal, access station, UE station, remote station, wireless communication equipment, or user device, etc.

[0090] In this application embodiment, the communication device used to implement the terminal device function can be the terminal device itself, or it can be a device capable of supporting the terminal device in implementing 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 used as an example to describe the technical solutions provided in this application embodiment. Furthermore, for ease of description, the terminal device in this application embodiment is described using a UE as an example.

[0091] The network devices in this application embodiment include, for example, access network devices and / or core network devices. 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: access and mobility management function (AMF), session management function (SMF), policy control function (PCF) or user plane function (UPF), etc.

[0092] In the CU-DU architecture, access network equipment can 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 can be separate entities or included in the same network element, such as a baseband unit (BBU). RUs can be included in radio equipment or radio units, such as remote radio units (RRUs), active antenna units (AAUs), or remote radio heads (RRHs).

[0093] 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 open RAN (ORAN) system, CU can also be called open CU (open CU, O-CU), DU can also be called open DU (open DU, O-DU), CU-CP can also be called open CU-CP (open CU-CP, O-CU-CP), CU-UP can also be called open CU-UP (open CU-CP, O-CU-UP), and RU can also be called open RU (open RU, O-RU). For ease of description, the embodiments of this application use CU, CU-CP, CU-UP, DU, and RU as examples. Any of the units among CU (or CU-CP, CU-UP), DU, and RU in the embodiments of this application can be implemented by a software module, a hardware module, or a combination of a software module and a hardware module.

[0094] Optionally, in various embodiments of this application, if the network device is a distributed architecture, such as the network device including CU and DU, or including CU-CP, CU-UP and DU, then the network device sends information to the UE, specifically the DU included in the network device sends information to the UE; the network device receives information from the UE, specifically the DU included in the network device receives information from the UE.

[0095] In this application embodiment, the communication device used to implement the network device function can be a network device itself, or it can be a device capable of supporting the network device in implementing that function, such as a chip system. This device can be installed within the network device. In the technical solutions provided in this application embodiment, the example of a network device being used to implement the network device function is used to describe the technical solutions provided in this application embodiment.

[0096] This application employs BF (Browser-Focused) technology, combining the UE's antennas into reference signal ports. These ports allow for measurement of the beam of interest instead of measuring all beams, thus focusing the UE's energy in specific directions, reducing energy consumption, and improving the signal-to-noise ratio (SNR). Furthermore, this application considers the number of reference signal ports corresponding to a time-domain element to be related to the transmit power of that time-domain element. For example, the number of reference signal ports affects the PAPR (Power Back-Off Rate) of the reference signal carried by that time-domain element. Therefore, the power back-off amount can be determined based on the number of reference signal ports corresponding to the first time-domain element. This power back-off amount determines the transmit power corresponding to the first time-domain element, referred to as the first transmit power. This power back-off amount can be understood as compensating for the power reduction caused by PAPR, increasing the transmit power of the first time-domain element, thereby improving the SNR of the reference signal and enhancing signal transmission quality.

[0097] 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. The UE can send a reference signal to the network device, and the network device can receive and measure the reference signal. The network device includes, for example, an access network device and / or a core network device, such as a base station. Further details about the network device and the UE can be found above.

[0098] The method provided in the embodiments of this application is described below with reference to the accompanying drawings. The reference signal in the embodiments of this application may include an uplink reference signal, such as an SRS, or other uplink reference signals, such as a demodulation reference signal (DMRS). Taking an SRS as an example, the reference signal port in the embodiments of this application may be an SRS port. The "time domain unit" in the embodiments of this application may be, for example, a radio frame, a subframe, a slot, a mini-slot, an orthogonal frequency division multiplexing (OFDM) symbol group, or an OFDM symbol, etc., and is not limited thereto. In the embodiments of this application, a "sub-time domain unit" can be a finer-grained time unit included in a time domain unit. For example, the time domain unit may be a radio frame, and the sub-time domain unit may be a subframe, a time slot, a mini-time slot, an OFDM symbol group, or an OFDM symbol; or, the time domain unit may be a subframe, and the sub-time domain unit may be a time slot, a mini-time slot, an OFDM symbol group, or an OFDM symbol; or, the time domain unit may be a time slot, and the sub-time domain unit may be a mini-time slot, an OFDM symbol group, or an OFDM symbol; or, the time domain unit may be a mini-time slot, and the sub-time domain unit may be an OFDM symbol group or an OFDM symbol; or, the time domain unit may be an OFDM symbol group, and the sub-time domain unit may be an OFDM symbol. In the accompanying drawings corresponding to the various embodiments of this application, all steps indicated by dashed lines are optional steps.

[0099] The various embodiments described herein 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. First, the reference signal port under BF technology is introduced, which is a technical feature involved in all embodiments of this application.

[0100] In traditional SRS transmission methods, each SRS port corresponds to one UE antenna, meaning each antenna of the UE independently transmits an SRS signal. This requires each antenna to transmit SRS across the entire band, resulting in significant transmission overhead. Furthermore, the UE's transmission power is relatively low, potentially leading to a low signal-to-noise ratio (SNR) for the SRS. To reduce overhead and improve the SNR of the reference signal, this embodiment employs BF (Browser-Focused) technology, combining the UE's antennas into a single reference signal port. This port allows measurement of the beam direction of interest, eliminating the need to measure all directions, thus reducing the number of reference signal ports, minimizing interference between them, and improving the SNR. The reference signal may include SRS or other uplink reference signals.

[0101] In this embodiment, the number of reference signal ports can be less than or equal to the number of antennas of the UE. The reference signal port j (j∈{1,…,L}) can be a specific combination of the Q antennas of the UE, for example, a non-negative vector w of length Q formed by combining the Q antennas of the UE according to corresponding weights (or weight values). j , among which, the w j The sum of squares of all elements in the array can be less than or equal to 1. The Q antennas can be all or some of the UE's antennas, where Q is a positive integer. When constructing a reference signal port, the weight of one of the Q antennas can be greater than or equal to 0 and less than or equal to 1. Reference signal port j corresponds to a beam direction, and L represents the number of reference signal ports corresponding to the UE. The network device receives the reference signal from the UE's reference signal port j and can measure the beam Hw corresponding to that reference signal port j. j , where H represents the full channel between the UE's Q antennas and all or some of the network device's antennas.

[0102] Please refer to Figure 2, which is a schematic diagram of a reference signal port in an embodiment of this application. Figure 2 includes reference signal port 1 and reference signal port 2. These two reference signal ports correspond to different reference signal resources. For example, in Figure 2, these two reference signal ports can occupy different combs on the same OFDM symbol. These two reference signal ports can be composed of Q antennas of the UE according to corresponding weights. Figure 2 takes Q=8 as an example.

[0103] The first communication method provided in the embodiments of this application will be introduced next. Please refer to Figure 3, which is a flowchart of the method.

[0104] S301. The network device determines the first transmit power based on the first power backoff amount.

[0105] The first transmission power can be used by the UE to transmit a reference signal (e.g., the first uplink reference signal, which will be introduced later) in the first time domain unit. Alternatively, the first transmission power is the transmission power of the UE when transmitting the reference signal in the first time domain unit, and therefore can also be considered to correspond to the first time domain unit. For example, if the network device needs to schedule the UE to transmit a reference signal in the first time domain unit, the network device can determine the first transmission power.

[0106] In this embodiment, a reference signal port can be composed of Q antennas of the UE according to corresponding weights. These Q antennas may include all or some of the UE's antennas. The UE can transmit reference signals through multiple reference signal ports, which may occupy the same time-domain unit. Each of these multiple reference signal ports is composed of Q antennas of the UE according to corresponding weights. Therefore, for one antenna of the UE, that antenna corresponds to multiple reference signal ports. The reference signal transmitted by that antenna in that time-domain unit may actually be a superposition of multiple reference signals (where each reference signal corresponds to one reference signal port). Due to the superposition of reference signals, the PAPR of the reference signal transmitted by that antenna in that time-domain unit increases, which leads to a decrease in the transmission power in that time-domain unit.

[0107] This application embodiment considers that the transmit power of a time domain unit is related to the number of reference signal ports corresponding to that time domain unit. For example, the more reference signal ports a time domain unit corresponds to, the more reference signals are superimposed on that time domain unit. Therefore, the PAPR of the reference signal carried by that time domain unit is higher, and the transmit power of that time domain unit is lower. Thus, the transmit power of that time domain unit is related to the number of reference signal ports corresponding to that time domain unit. To this end, the network device in this application embodiment can determine a first power backoff amount based on the number of reference signal ports corresponding to the first time domain unit, and then determine a first transmit power based on the first power backoff amount, thereby achieving compensation for the transmit power of the first time domain unit. Alternatively, it can be understood that the first power backoff amount can be related to the PAPR of the reference signal carried by the first time domain unit. Therefore, this application embodiment is equivalent to compensating for the transmit power affected by the decrease in PAPR through the first power backoff amount, thereby increasing the transmit power of the first time domain unit, thereby improving the signal-to-noise ratio of the reference signal carried by the first time domain unit and improving the signal transmission quality.

[0108] Optionally, the first power back-off amount can satisfy the following relationship: β=10lgR (Formula 1)

[0109] Where β represents the first power back-off amount, R represents the number of reference signal ports corresponding to the first time domain unit, and lgR represents the logarithm of R to base 10.

[0110] The first transmission power, determined based on the first power back-off amount, satisfies, for example, the following relationship:

[0111] Among them, P RS P represents the first transmission power. CMAX This indicates the maximum output power of the UE. This represents the open-loop receiver power target value for the reference signal port, or the open-loop receiver power target value, which can also be called the open-loop target received power, indicating the target received power of the receiver for the reference signal port in the open-loop state. P1 represents the power back-off amount other than the first power back-off amount, and β represents the first power back-off amount. The UE may have one or more reference signal ports. It can represent the power determined based on the target received power value (or target received power) of all or part of the reference signal ports of the UE. For example, it can represent the sum of the target received power values ​​of all or part of the reference signal ports of the UE, or the average value of the target received power values ​​of all or part of the reference signal ports of the UE, or the target received power value of one reference signal port of the UE, etc. min{x,y} means taking the smaller value between x and y.

[0112] Optionally, the first transmission power can also satisfy the following relationship:

[0113] in, This represents the open-loop information (or open-loop portion or open-loop operating point) determined by the target received power (e.g., open-loop target received power) and semi-static path loss estimation, through... The transmission power can be adjusted slowly and quasi-statically. Wherein, α RS PL represents road loss correction information; P1 in Formula 2 can include α. RS ·PL. h represents the power control offset (adjustment) state value, that is, in the closed loop, h allows for rapid adjustment of the transmission power for a specific transmission. The adjustment is based on the effect of the previous transmission, and the adjustment information can be obtained through downlink control information (DCI) and other information. Δ represents the adjustment amount. Optionally, Δ can include β, in which case β can be removed from Formula 3; or Δ can exclude β, for example, Δ can include other adjustment amounts besides β.

[0114] Formula 3 can be applied independently, or it can be considered as an optional implementation of Formula 2.

[0115] Alternatively, the above Δ can satisfy the following relationship: Δ=10lg(2μ M)+Δ′ (Formula 4)

[0116] Where Δ′ represents the adjustment amount related to the format of this uplink transmission, which typically includes Δ TF TF stands for transmission format, which can be represented by a modulation and coding scheme (MCS), or the transmission format can be understood as MCS.

[0117] Substituting Formula 4 into Formula 3, we obtain the following relationship:

[0118] Formula 5 can be applied independently; or, Formula 5 can be considered as an optional implementation of Formula 2; or, Formula 5 can be considered as an optional implementation of Formula 3.

[0119] As an example of Equation 2, Equation 3, or Equation 5, taking the SRS as the reference signal and the first transmission power as the transmission power of the UE on carrier f, serving cell c, and SRS transmission timing i, the first transmission power can satisfy the following relationship:

[0120] Among them, P SRS,b,f,c (i,q s ,l) represents the first transmission power. P CMAX,f,c (i) represents the maximum output power configured by the UE on carrier f, serving cell c, and SRS transmission timing i. Represents the reference signal resource set q s In the uplink bandwidth part (BWP) b, carrier f, and serving cell c, the power is such that, taking the SRS as the reference signal as an example, the reference signal resource set q... s It can be an SRS resource set q s M SRS,b,f,c (i) represents the SRS transmission bandwidth at uplink BWP b, carrier f, serving cell c, and SRS transmission timing i. α SRS,b,f,c (q s ) represents the SRS resource set q s The path loss reduction factor on uplink BWP b, carrier f, serving cell c, and SRS transmission timing i. PL b,f,c (q d ) represents the downlink path loss corresponding to uplink BWP b, carrier f, serving cell c, and SRS transmission timing i. b,f,c(i,l) represents the power related to the SRS and physical uplink shared channel (PUSCH) at uplink BWP b, carrier f, serving cell c, and SRS transmission timing i. q s This represents a reference signal resource set (e.g., an SRS resource set), where q represents the SRS resource set. s Includes one or more reference signal resources (e.g., SRS resources). d This represents the index of the SRS used for downlink path loss estimation. l represents the index of the reference signal resource. c represents the serving cell of the UE. μ represents the subcarrier spacing corresponding to the physical uplink control channel (PUCCH). β represents the first power backoff amount.

[0121] As another example of Equation 2, Equation 3, or Equation 5, taking the reference signal as PUCCH (e.g., the reference signal is carried by PUCCH) and the first transmission power as the transmission power of the UE on carrier f, serving cell c, and PUCCH transmission time i, the first transmission power can satisfy the following relationship:

[0122] Among them, P PUCCH,b,f,c (i,q u ,q d ,l) represents the first transmission power. P CMAC,f,c (i) represents the maximum output power configured by the UE on carrier f, serving cell c, and PUCCH transmission timing i. O_PUCCH,f,b,c (q u ) represents the target received power values ​​for the uplink bandwidth part (BWP) b, carrier f, and serving cell c, where q u The index representing the target received power value. This indicates the transmission bandwidth of PUCCH at uplink BWP b, carrier f, and serving cell c. PL b,f,c (q d ) represents the downlink path loss corresponding to the uplink BWP b, carrier f, serving cell c, and PUCCH transmission timing i, and q d Indicates the index of the reference signal resource. Δ F_PUCCH (F)+Δ TF,b,f,c (i) indicates the adjustment amount related to the PUCCH format, where F represents the PUCCH format, for example, PUCCH formats include PUCCH format 0 to PUCCH format 4. g b,f,c (i,l) represents the closed-loop control variables of uplink BWP b, carrier f, and serving cell c.

[0123] S302, The network device sends an indication message to the UE. Correspondingly, the UE receives the indication message. This indication message may indicate a first transmit power.

[0124] This indication information may be included, for example, in an RRC message or in a message at another protocol layer, such as MAC CE or DCI.

[0125] Alternatively, the UE can determine the first transmission power itself (the determination method can be similar to or the same as the determination method of the network device in S301), then S302 does not need to be executed, so S302 is an optional step.

[0126] Optionally, the method may further include S303, whereby the UE transmits a first uplink reference signal to the network device in the first time domain unit according to a first transmit power, and correspondingly, the network device receives the first uplink reference signal in the first time domain unit.

[0127] Once the UE determines the first transmit power, it can transmit the first uplink reference signal in the first time domain unit according to the first transmit power. The network device can also detect and receive the first uplink reference signal in the first time domain unit, for example, the network device can measure the first uplink reference signal.

[0128] This application embodiment employs BF (Browser-Focused) technology, combining the UE's antennas into reference signal ports. These reference signal ports allow for measurement of the beam of interest, eliminating the need to measure all beams. This enables the UE's energy to be focused in specific directions, reducing energy consumption and improving the signal-to-noise ratio (SNR). Furthermore, this application embodiment can determine the first power back-off amount based on the number of reference signal ports corresponding to the first time-domain unit. In other words, this application embodiment can use the first power back-off amount to compensate for the power loss due to a decrease in PAPR, thereby increasing the transmission power of the first time-domain unit and ultimately improving the SNR of the SRS signal carried by the first time-domain unit, thus enhancing signal transmission quality.

[0129] As mentioned earlier, a UE can have one or more reference signal ports. If there are multiple reference signal ports, these ports may correspond to the same time domain element or different time domain elements. If the UE does not know the time domain distribution of the reference signal ports, it may be unable to transmit reference signals. Therefore, this application provides a second communication method that enables the UE to determine the time domain distribution of the reference signal ports. Please refer to Figure 4, which is a flowchart of this method.

[0130] S401, The network device sends the first information. Correspondingly, the UE receives the first information from the network device.

[0131] The first information can indicate the number of reference signal ports corresponding to a time-domain unit, the number of stacked layers of reference signal ports on the time-domain unit, the time-domain distribution of the UE's reference signal ports, or the time-domain pattern of the UE's reference signal ports. The number of stacked layers of reference signal ports on the time-domain unit is the number of reference signal ports corresponding to one time-domain unit. Based on the first information, the UE can determine how many reference signal ports correspond to one time-domain unit, thereby determining the time-domain distribution of the UE's reference signal ports.

[0132] [Corrected according to Rule 91, April 23, 2025] Optionally, when the value of the first information satisfies the following relationship, the number of reference signal ports corresponding to one time-domain unit is R:

[0133] Where p represents the value of the first information, and the value of p ranges from [0, P]. P represents the maximum value of the code division offset (or the maximum number of cyclic shifts, or the number of code divisions, or the number of code division methods). The value of P can be predefined by the protocol, for example, the value of P can be 6, 8, or 12, etc. The code division offset can be used to determine the code division sequence. For example, the code division offset can be a cyclic shift of the code division sequence (e.g., an orthogonal mask sequence). One code division offset can correspond to one code division sequence or one code division method. Embodiments of this application can employ time-domain convergence technology. For example, if multiple reference signal ports transmit reference signals on a time-domain unit, the reference signals transmitted by these multiple reference signal ports can reduce interference through code division methods. For example, reference signals transmitted by different reference signal ports can be spread using different orthogonal mask sequences for code division multiplexing. Therefore, the number of code division methods corresponding to a time-domain unit can be equal to the number of reference signal ports corresponding to that time-domain unit. The code division offset corresponding to a time domain unit represents the number of code division schemes corresponding to that time domain unit, and can also represent the number of reference signal ports corresponding to that time domain unit. This indicates rounding down x. L represents the number of reference signal ports for the UE, for example, the number of reference signal ports configured for the UE by the network device.

[0134] For example, taking L=4 as an example, when the value of the first information satisfies When R is 1, one time-domain unit corresponds to one reference signal port. The UE's four reference signal ports can correspond to four time-domain units (or, the number of stacking layers of reference signal ports is 1). Please refer to Figure 5A, which is a schematic diagram of this time-domain distribution method. Alternatively, when the value of the first information satisfies... When R is 2, one time-domain unit corresponds to two reference signal ports (or, the number of stacking layers of reference signal ports is 2). The UE's four reference signal ports can correspond to two time-domain units. Please refer to Figure 5B, which is a schematic diagram of this time-domain distribution. Alternatively, when the value of the first information satisfies... When R is 4, one time domain unit corresponds to four reference signal ports. The four reference signal ports of the UE can correspond to one time domain unit (or, the number of stacking layers of reference signal ports is 4). Please refer to Figure 5C, which is a schematic diagram of this time domain distribution method.

[0135] Optionally, the first information may be included in the first message. The first message may be, for example, a message specifically defined in embodiments of this application for carrying the first information, or it may be an existing message. As an example of an existing message, the first message may be a message for configuring at least one reference signal port for the UE, for example, the number of the at least one reference signal port is L, i.e., the at least one reference signal port is L reference signal ports. The first message may include at least one configuration information, which corresponds one-to-one with at least one reference signal port, wherein each configuration information is used to configure the corresponding reference signal port. The first information may be included in the first message but not in the at least one configuration information, and exists independently in the first message; or, the first information may be included in one of the configuration information A in the at least one configuration information, where configuration information A is, for example, the configuration information of the first reference signal port among the at least one reference signal port, which may be the first reference signal port among the at least one reference signal port, or the last reference signal port among the at least one reference signal port, or any one of the at least one reference signal ports. Including the first information in the message for configuring the reference signal port, instead of sending it separately, can save signaling overhead on network devices.

[0136] The first message can be a radio resource control (RRC) message, such as an RRC reconfiguration message. Alternatively, the first message can be other RRC messages or messages from other protocol layers, such as a media access control (MAC) control element (CE).

[0137] After determining the time-domain distribution of the reference signal port, the UE can use the reference signal port to send the reference signal.

[0138] This application employs BF (Browser-Focused) technology, combining the UE's antennas into a reference signal port. This port allows for measurement of the beam of interest without requiring measurement of all beams, thus focusing the UE's energy in a specific direction, reducing energy consumption, and improving the signal-to-noise ratio. Furthermore, in this application, the network device can indicate the time-domain distribution of the reference signal port to the UE, enabling the UE to clearly understand the time-domain distribution of the reference signal port and transmit reference signals through it.

[0139] To increase transmission power and thus improve the signal-to-noise ratio (SNR) of the reference signal, embodiments of this application may employ time-domain power aggregation techniques, including time-domain repetition. Time-domain repetition refers to a reference signal port repeatedly transmitting the reference signal on multiple consecutive time-domain units. After receiving these multiple reference signals, the network device can combine them, which can significantly improve the SNR of the reference signal. For example, referring to Figure 6, a UE's reference signal port can repeatedly transmit the reference signal on four consecutive time-domain units (in Figure 6, reference signal 1 is transmitted on all four consecutive time-domain units). In this scenario, the weights of the UE antenna corresponding to the reference signal may differ in different time-domain units, potentially causing the receiver to fail to despread the received reference signal.

[0140] Therefore, this application provides a third communication method, which enables the receiving end to achieve correct despreading. Please refer to Figure 7, which is a flowchart of this method.

[0141] S701. The UE repeatedly transmits the first uplink reference signal in N time domain units through the first reference signal port. Correspondingly, the network device receives the repeated first uplink reference signal in N time domain units. N is a positive integer.

[0142] Each first uplink reference signal can occupy M time-domain units, where M is a positive integer and N can be an integer multiple of M. This is equivalent to the UE transmitting a total of N signals through the first reference signal port in N time-domain units. There are N first uplink reference signals. Taking M=1 as an example, this is equivalent to the UE sending N first uplink reference signals in N time domain units through the first reference signal port, and the network device can receive N first uplink reference signals.

[0143] The first reference signal port can be any reference signal port of the UE. It can also be a non-negative vector of length P formed by Q antennas of the UE according to their respective weights. For an introduction to the Q antennas, please refer to the previous text. For example, the Q antennas may include a first antenna, and the weight of the first antenna in this non-negative vector may be, for example, a first weight. In this embodiment, the first antenna can be assigned a first weight in all N time-domain units, or the first reference signal port can be assigned a first weight in all N time-domain units. Alternatively, it can be understood that, for the first reference signal port, which is composed of Q antennas, the first antenna among the Q antennas, when forming the first reference signal port, corresponds to the first weight in all N time-domain units, which is equivalent to the first antenna forming the first reference signal port having an unchanged weight in the N time-domain units. Therefore, this embodiment can ensure that the weight of the UE antenna in the N time-domain units remains unchanged, thereby improving the despreading success rate of the receiving end of the reference signal for repeated first uplink reference signals.

[0144] Optionally, the first antenna may be any one of Q antennas. For example, for each antenna of the UE that participates in constituting the first reference signal port (e.g., the number of antennas participating in constituting the first reference signal port may be less than or equal to Q), the weight of each antenna in the N time-domain units can remain unchanged. For example, in the N time-domain units, the weight of antenna i constituting the first reference signal port always remains G. i Here, antenna i is any one of the Q antennas. If the weights of any one of the Q antennas remain unchanged in the N time-domain units, then the antenna weights corresponding to the first reference signal port can remain unchanged in the N time-domain units. In this way, the receiver of the first uplink reference signal (e.g., a network device) can correctly despread the first uplink reference signal.

[0145] Optionally, in the N time-domain units, the difference in channel quality between different first uplink reference signals can be less than or equal to a first threshold. Taking a first uplink reference signal carried in M ​​time-domain units as an example, the difference in channel quality between the first uplink reference signals carried in different M time-domain units can be less than or equal to the first threshold. The first threshold can be predefined by the protocol or configured by the network device, etc. This condition can be understood as follows: The channel quality of the first uplink reference signal is equal or has little difference. If If there is a significant difference in channel quality between different first uplink reference signals, it may lead to despreading failure at the receiving end (e.g., network device). Therefore, in this embodiment, the channel quality of the first uplink reference signals can be made equal or have small differences, so that the network device can correctly despread the first uplink reference signals.

[0146] Please refer to Figure 8, which is a schematic diagram of an embodiment of this application. Figure 8 uses N=4 and M=1 as an example, and... Taking the orthogonal mask sequence (+1, +1, -1, -1) used for the first uplink reference signal as an example, in Figure 8, the antennas constituting the first reference signal port correspond to a first weight (represented by w1 in Figure 8) in each of the N time-domain units, enabling the receiver of the first uplink reference signal (e.g., a network device) to correctly despread the first uplink reference signal. H in Figure 8 represents channel information, and Figure 8 uses the example of N time-domain units having the same channel quality (or channel information).

[0147] This application employs BF (Browser-Focused) technology, combining the UE's antennas into a reference signal port. This port allows for measurement of the beam of interest without requiring measurement of all beams, thus focusing the UE's energy in a specific direction, reducing energy consumption, and improving the signal-to-noise ratio. Furthermore, in this application, the weights of the antennas constituting the first reference signal port across N time-domain units remain unchanged, enabling the receiver of the first uplink reference signal (e.g., a network device) to correctly despread the first uplink reference signal.

[0148] As mentioned above, different reference signal ports of the UE can share the same time domain unit (e.g., refer to Figure 5C), or they can occupy different time domain units (e.g., refer to Figure 5A or Figure 5B, where Figure 5B also includes the case where different reference signal ports share the same time domain unit). If they occupy different time domain units, how the different reference signal ports of the UE are distributed in the time domain is a problem that needs to be solved. To this end, embodiments of this application provide a fourth communication method, which provides a distribution scheme for the reference signal ports of the UE in the time domain. Please refer to Figure 9, which is a flowchart of the method.

[0149] S901, the UE transmits a first uplink reference signal in K1 sub-time domain units through a first reference signal port, and transmits a second uplink reference signal in K2 sub-time domain units through a second reference signal port. Correspondingly, the network device receives the first uplink reference signal in K1 sub-time domain units, and receives the first uplink reference signal in K2 sub-time domain units. K1 and K2 are both positive integers.

[0150] Where K1 and K2 are both positive integers. K1 sub-time domain units are contiguous in the time domain, and K2 sub-time domain units are also contiguous in the time domain, with the K2 sub-time domain units following the K1 sub-time domain units. The K1 sub-time domain units and the K2 sub-time domain units can reside in one or more time domain units. Optionally, the K1 and K2 sub-time domain units can be contiguous in the time domain to reduce resource waste.

[0151] This can be understood as follows: the UE can prioritize performing time-domain power aggregation on the same reference signal port in consecutive sub-time-domain units, and only place the next reference signal port after the time-domain aggregation of that reference signal port is completed. Alternatively, the UE can place the sub-time-domain units corresponding to a reference signal port consecutively, or place consecutive sub-time-domain units corresponding to a reference signal port; only place the sub-time-domain units corresponding to the next reference signal port after the sub-time-domain units corresponding to that reference signal port are completed.

[0152] A time-domain unit may include one or more sub-time-domain units. Optionally, the reference signal ports of the UE may be distributed within the same time-domain unit or in different time-domain units. For example, the UE may allocate sub-time-domain units to each reference signal port within a time-domain unit in a consecutive manner. If there are not enough sub-time-domain units in the current time-domain unit, the remaining unallocated reference signal ports may be allocated to the sub-time-domain units included in the next time-domain unit.

[0153] For example, a UE has four reference signal ports, each of which is repeatedly transmitted over two OFDM symbols; that is, each reference signal port corresponds to two OFDM symbols. Referring to Figure 10, taking the reference signal as SRS as an example, the reference signal port is the SRS port. Starting with the available OFDM symbols in time slot 1, the UE can place SRS port 1 in the first two available OFDM symbols of time slot 1, and SRS port 2 in the next two OFDM symbols. Since there are a maximum of four available OFDM symbols in each time slot, the UE can place SRS port 3 in the first two available OFDM symbols of time slot 2, and SRS port 4 in the last two available OFDM symbols of time slot 2. Time slot 2 is, for example, the time slot following time slot 1. "Available OFDM symbols" refers to, for example, OFDM symbols that can be used to carry reference signals (e.g., SRS).

[0154] This application employs BF (Broadcast Fraction) technology, combining the UE's antennas into a reference signal port. This port allows for measurement of the beam of interest without requiring measurement of all beams, thus focusing the UE's energy in a specific direction, reducing energy consumption, and improving the signal-to-noise ratio (SNR). Furthermore, this application combines time-domain convergence (TFC) technology with BF, for example, by making the sub-time-domain units corresponding to the same reference signal port continuous. This helps reduce fluctuations in the reference signal transmitted from the same reference signal port, improving the SNR of the transmitted reference signal, reducing despreading loss at the reference signal receiver, and ultimately enhancing signal transmission quality.

[0155] The embodiments shown in Figures 3, 4, 7, and 9 above can be applied individually, or any two or more embodiments can be combined. For example, the embodiments shown in Figure 3 and Figure 4 can be combined. The network device can determine the transmission power of a certain time-domain unit according to the embodiment shown in Figure 3, and can also indicate the time-domain pattern of the reference signal port to the UE according to the embodiment shown in Figure 4. As another example, the embodiments shown in Figure 4 and Figure 7 can be combined. The network device can indicate the time-domain pattern of the reference signal port to the UE according to the embodiment shown in Figure 4, and the UE can transmit the uplink reference signal according to the embodiment shown in Figure 7. As yet another example, the embodiments shown in Figure 4 and Figure 7 can be combined. The network device can indicate the time-domain pattern of the reference signal port to the UE according to the embodiment shown in Figure 4, and the UE can transmit the uplink reference signal according to the embodiment shown in Figure 9. As yet another example, the embodiments shown in Figure 7 can be combined. The N time-domain units in the embodiment shown in Figure 7 can be replaced by K1 or K2 sub-time-domain units in the embodiment shown in Figure 9. For example, the embodiments shown in Figures 3, 4, 7, and 9 can all be combined. The network device can determine the transmission power of a certain time-domain unit according to the embodiment shown in Figure 3, and can also indicate the time-domain pattern of the reference signal port to the UE according to the embodiment shown in Figure 4. The UE can send the uplink reference signal according to the embodiment shown in Figure 9. In the embodiment shown in Figure 9, the K1 sub-time-domain units or K2 sub-time-domain units can be the N time-domain units in the embodiment shown in Figure 7. There may be other combinations of the above embodiments, which are not listed here.

[0156] Figure 10 shows a schematic diagram of a communication device provided in an embodiment of this application. The communication device 1000 can be a UE or its circuit system as described in any of the embodiments shown in Figures 3, 4, 7, or 9, used to implement the method corresponding to the UE in the above method embodiments. Alternatively, the communication device 1000 can be a network device or its circuit system as described in any of the embodiments shown in Figures 3, 4, 7, or 9, 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.

[0157] The communication device 1000 includes at least one processor 1001. The processor 1001 can be used for internal processing within the device to implement certain control processing functions. Optionally, the processor 1001 includes instructions. Optionally, the processor 1001 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 onto one or more integrated circuits.

[0158] Optionally, the communication device 1000 includes one or more memories 1003 for storing instructions. Optionally, the memories 1003 may also store data. The processor and the memories may be separate or integrated together.

[0159] Optionally, the communication device 1000 includes a communication line 1002 and at least one communication interface 1004. Since the memory 1003, communication line 1002, and communication interface 1004 are all optional, they are all represented by dashed lines in Figure 10.

[0160] Optionally, the communication device 1000 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 1000 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.

[0161] The processor 1001 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.

[0162] The communication line 1002 may include a path for transmitting information between the aforementioned components.

[0163] Communication interface 1004 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.

[0164] The memory 1003 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 electrically erasable programmable read-only memory (EEPROM), compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (including compressed optical discs, laser discs, optical discs, digital universal 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 not limited thereto. The memory 1003 may exist independently and be connected to the processor 1001 via communication line 1002. Alternatively, the memory 1003 may be integrated with the processor 1001.

[0165] The memory 1003 stores computer execution instructions for implementing the scheme of this application, and the processor 1001 controls the execution of these instructions. The processor 1001 executes the computer execution instructions stored in the memory 1003 to implement the steps performed by the UE or network device in any of the embodiments shown in Figures 3, 4, 7, or 9.

[0166] 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.

[0167] In a specific implementation, as one embodiment, the processor 1001 may include one or more CPUs, such as CPU0 and CPU1 in FIG10.

[0168] In a specific implementation, as one embodiment, the communication device 1000 may include multiple processors, such as processor 1001 and processor 1005 in FIG. 10. 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).

[0169] When the device shown in Figure 10 is a chip, such as a UE chip or a network device chip, the chip includes a processor 1001 (and may also include a processor 1005), a communication line 1002, and a communication interface 1004. Optionally, it may include a memory 1003. Specifically, the communication interface 1004 may be an input interface, pins, or circuits, etc. The memory 1003 may be a register, cache, etc. The processor 1001 and processor 1005 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.

[0170] This application embodiment can divide the device into functional modules according to the above method examples. For example, each function can be divided into a separate functional module, or two or more functions can be integrated into one processing module. The integrated module can be implemented in hardware or as a software functional module. 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 each function, Figure 11 is a schematic diagram of a device. The device 1100 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 1100 includes a processing unit 1102 and a transceiver unit 1101.

[0171] It should be understood that the device 1100 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 any of the above figures 3, 4, 7 or 9, and will not be repeated here.

[0172] Optionally, the functions / implementation processes of the transceiver unit 1101 and processing unit 1102 in Figure 11 can be implemented by the processor 1001 in Figure 10 calling computer execution instructions stored in memory 1003. Alternatively, the functions / implementation processes of the processing unit 1102 in Figure 11 can be implemented by the processor 1001 in Figure 10 calling computer execution instructions stored in memory 1003, and the functions / implementation processes of the transceiver unit 1101 in Figure 11 can be implemented by the communication interface 1004 in Figure 10.

[0173] Optionally, when the device 1100 is a chip or circuit, the function / implementation process of the transceiver unit 1101 can also be implemented through pins or circuits. Optionally, the transceiver unit 1101 may include a transmitting unit and / or a receiving unit, wherein the transmitting unit is used to implement the transmitting function and the receiving unit is used to implement the receiving function; or, the transceiver unit 1101 may be an integral module capable of implementing the transmitting and / or receiving functions. Optionally, the transceiver unit 1101 may be implemented using a transceiver.

[0174] 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.

[0175] 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.

[0176] 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.

[0177] 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)).

[0178] 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.

[0179] 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.

[0180] 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.

[0181] 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.

[0182] 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 in that, The method includes: The first transmit power is determined based on the first power back-off amount. The first transmit power is used by the terminal device to transmit a first uplink reference signal in the first time domain unit. The first power back-off amount is determined based on the number of reference signal ports corresponding to the first time domain unit.

2. The method according to claim 1, characterized in that, The more reference signal ports corresponding to the first time domain unit, the greater the first power back-off amount.

3. The method according to claim 1 or 2, characterized in that, The first power back-off amount satisfies the following relationship: β=10lg R; Where β represents the first power back-off amount, R represents the number of reference signal ports corresponding to the first time domain unit, and lg R represents the logarithm of R to base 10.

4. The method according to any one of claims 1 to 3, characterized in that, The first transmission power satisfies the following relationship: Among them, P RS P represents the first transmission power. CMAX This indicates the maximum output power of the terminal device. P1 represents the open-loop target received power of the reference signal port, P1 represents the power back-off amount other than the first power back-off amount, and β represents the first power back-off amount.

5. The method according to any one of claims 1 to 4, characterized in that, The first transmission power satisfies the following relationship: Among them, P RS This indicates the first transmission power. This represents the open-loop information determined by the open-loop target received power and semi-static path loss estimation, where h represents the power control offset state value, Δ represents the adjustment amount, and P... CMAX β represents the maximum output power of the terminal device, μ represents the first power back-off amount, and μ represents the subcarrier spacing.

6. The method according to any one of claims 1 to 5, characterized in that, The method further includes: Send indication information to the terminal device, the indication information being used to indicate the first transmission power.

7. The method according to any one of claims 1 to 6, characterized in that, The method further includes: The first uplink reference signal is received from the terminal device in the first time domain unit.

8. A communication method, characterized in that, The method includes: Receive indication information, the indication information being used to indicate a first transmission power, the first transmission power satisfying the following relationship: Among them, P RS P represents the first transmission power. CMAX This indicates the maximum output power of the terminal device. P1 represents the open-loop target received power of the reference signal port, P1 represents the power back-off amount other than the first power back-off amount, and β represents the first power back-off amount, wherein the first power back-off amount is determined based on the number of reference signal ports corresponding to the first time domain unit.

9. The method according to claim 8, characterized in that, The first power back-off amount satisfies the following relationship: β=10lg R; Where β represents the first power back-off amount, R represents the number of reference signal ports corresponding to the first time domain unit, and lg R represents the logarithm of R to base 10.

10. The method according to claim 8 or 9, characterized in that, The first transmission power satisfies the following relationship: Among them, P RS This indicates the first transmission power. This represents the open-loop information determined by the open-loop target received power and semi-static path loss estimation, where h represents the power control offset state value, Δ represents the adjustment amount, and P... CMAX β represents the maximum output power of the terminal device, μ represents the first power back-off amount, and μ represents the subcarrier spacing.

11. The method according to any one of claims 8 to 10, characterized in that, The method further includes: In the first time domain unit, a first uplink reference signal is transmitted at the first transmit power.

12. A communication method, characterized in that, The method includes: Send first information, which indicates the number of reference signal ports corresponding to a time domain unit.

13. The method according to claim 12, characterized in that, The first information is included in a first message, which is used to configure at least one reference signal port.

14. The method according to claim 13, characterized in that, The first information is included in the configuration information of the first reference signal port in the at least one reference signal port.

15. The method according to claim 14, characterized in that, The first information is also used to indicate the code division offset corresponding to the first reference signal port.

16. The method according to claim 15, characterized in that, The first information is used to indicate the number of reference signal ports corresponding to one time-domain unit, including: When the value of the first information satisfies When the quantity is R, p represents the value of the first information, and the value of p ranges from [0, P-1], where P-1 represents the maximum value of the code division offset. This indicates that x is rounded down, and L represents the number of configured reference signal ports.

17. The method according to claim 16, characterized in that, L＝4， When the value of the first information satisfies When the quantity is 1; or, When the value of the first information satisfies When the quantity is 2; or, When the value of the first information satisfies At that time, the quantity was 4.

18. A communication device, characterized in that, The communication device includes a module for performing the method as described in any one of claims 1 to 7, or a module for performing the method as described in any one of claims 8 to 11, or a module for performing the method as described in any one of claims 12 to 17.

19. A communication device, characterized in that, The communication device includes a processor, which is configured to perform the method as described in any one of claims 1 to 7, or the method as described in any one of claims 8 to 11, or the method as described in any one of claims 12 to 17.

20. 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 7 to be performed, or causes the method as described in any one of claims 8 to 11 to be performed, or causes the method as described in any one of claims 12 to 17 to be performed.

21. 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 7, or causes the computer to perform the method as described in any one of claims 8 to 11, or causes the computer to perform the method as described in any one of claims 12 to 17.

Images