Signal transmission method and communication apparatus

Abstract

Provided in the present application are a signal transmission method and a communication apparatus. The method comprises: a first device receives first indication information, the first indication information being used for determining a resource pattern of a reference signal, the resource pattern of the reference signal comprising at least one first basic pattern, and the first indication information indicating a relationship between the first basic pattern and a reference resource pattern, for example, indicating whether the first basic pattern is updated with respect to the reference resource pattern; and, on the basis of the first indication information, receiving or sending the reference signal. Thus, on the basis of the reference resource pattern and the relationship between the first basic pattern and the reference resource pattern, the first device can determine each basic pattern, so as to determine the resource pattern of the reference signal on the basis of each basic pattern. Compared with solutions in which resource patterns of reference signals are directly indicated, the present solution can reduce signaling overheads caused by indicating resource patterns of reference signals.

Description

Signal transmission method and communication device Technical Field

[0001] The present application relates to the field of communications, and more particularly, to a signal transmission method and a communication device. Background Art

[0002] Multiple-input, multiple-output (MIMO) technology is a key technology for fifth-generation (5G) communications and future communications. In MIMO, multiple transmit antennas at the transmitter and multiple receive antennas at the receiver are used to transmit and receive signals, achieving multiple transmissions and multiple receptions, thereby improving communication quality.

[0003] Reference signals are transmitted between the transmitter and receiver for purposes such as data transmission and reception, system synchronization, and feedback channel information. For example, the transmitter sends a reference signal to the receiver, which then receives the reference signal and performs corresponding operations based on it. Therefore, obtaining reference signal configuration information, such as the reference signal resource pattern, is a question worth considering.

[0004] Summary of the Invention

[0005] The present application provides a signal transmission method and a communication device, which can reduce the signaling overhead caused by a resource pattern indicating a reference signal.

[0006] In a first aspect, a method for signal transmission is provided, which can be performed by an apparatus. The apparatus can be a device (such as a terminal device or a network device), or a component of a device (such as a chip or a chip system or a circuit), which is not limited in this application.

[0007] The method may include: receiving first indication information, the first indication information is used to determine the resource pattern of the reference signal, the resource pattern of the reference signal includes at least one first basic pattern, the first indication information indicates the relationship between the first basic pattern and the reference resource pattern; based on the first indication information, receiving or sending the reference signal.

[0008] Based on the above technical solution, the first indication information used to determine the resource pattern of the reference signal specifically indicates the relationship between the basic patterns that constitute the resource pattern of the reference signal and the reference resource pattern. In this way, based on this relationship and the reference resource pattern, the basic patterns can be determined, and then the resource pattern of the reference signal can be determined based on the basic patterns. Compared with the solution of directly indicating the resource pattern of the reference signal, this solution can reduce the signaling overhead caused by indicating the resource pattern of the reference signal. In addition, this solution is more flexible and can be applied to more communication scenarios. For example, for scenarios where the resource patterns of the reference signal are unevenly distributed, or for scenarios where the resource patterns of the reference signal are sparsely distributed, this solution is also applicable.

[0009] In combination with the first aspect, in certain implementations of the first aspect, the first indication information includes first information, and the first indication information indicates the relationship between the first basic pattern and the reference resource pattern, including: the first information indicates whether the first basic pattern is updated relative to the reference resource pattern.

[0010] In combination with the first aspect, in some implementations of the first aspect, the first information indicates that the first basic pattern is updated relative to the reference resource pattern, and the first indication information further includes second information, where the second information indicates the first basic pattern.

[0011] Based on the above technical solution, the indication of the resource pattern of the reference signal can be implemented through two-level signaling (i.e., first information and second information). Specifically, the first-level signaling (i.e., first information) indicates whether the basic pattern (i.e., first basic pattern) has been updated relative to the reference resource pattern; if the basic pattern has been updated relative to the reference resource pattern, the second-level signaling (i.e., second information) indicates the basic pattern. In this way, the signaling overhead associated with indicating the resource pattern of the reference signal can be reduced.

[0012] In combination with the first aspect, in certain implementations of the first aspect, the first information indicates that the first parameter in the configuration information of the first basic pattern is updated relative to the first parameter in the configuration information of the reference resource pattern, and the second information indicates the first parameter in the configuration information of the first basic pattern.

[0013] Based on the above technical solution, if the basic pattern is updated relative to the reference resource pattern, the second information may directly indicate the updated parameters in the configuration information of the basic pattern, which can further reduce signaling overhead.

[0014] In combination with the first aspect, in certain implementations of the first aspect, the reference resource pattern includes at least one second basic pattern, and the first indication information indicates the relationship between the first basic pattern and the reference resource pattern, including: the first indication information indicates the relationship between the first basic pattern and the second basic pattern.

[0015] In combination with the first aspect, in certain implementations of the first aspect, the configuration information of the first basic pattern includes one or more of the following information: the starting position of the first basic pattern, the domain corresponding to the first basic pattern, and the resource of the reference signal indicated by the first basic pattern, wherein the domain corresponding to the first basic pattern is any one of the following: time domain, frequency domain, and spatial domain.

[0016] For example, the first indication information indicates the relationship between the first basic pattern and the reference resource pattern, which means that the first indication information indicates the relationship between the configuration information of the first basic pattern and the configuration information of the reference resource pattern.

[0017] Based on the above technical solution, the resource pattern of the reference signal can be obtained through the configuration information of the first basic pattern.

[0018] In combination with the first aspect, in certain implementations of the first aspect, the resources of the reference signal indicated by the first basic pattern include at least one of the following information: the total number of resources corresponding to the first basic pattern, the total number of resources occupied by the reference signal, the resource density of the resources occupied by the reference signal, the starting position of the resources occupied by the reference signal, the ending position of the resources occupied by the reference signal, the index of the preset pattern used to obtain the first basic pattern, the offset of the resources occupied by the reference signal relative to the preset pattern, the offset direction of the resources occupied by the reference signal relative to the preset pattern, and the change in resource density of the resources occupied by the reference signal relative to the preset pattern.

[0019] In combination with the first aspect, in some implementations of the first aspect, the method further includes: receiving second indication information, the second indication information indicating at least one bandwidth resource, and the at least one bandwidth resource is associated with a resource pattern of a reference signal.

[0020] Among them, at least one bandwidth resource is associated with the resource pattern of the reference signal. It can be understood that the resource pattern of the reference signal is applicable to the at least one bandwidth resource, or in other words, the resource pattern of the reference signal is the pattern of the reference signal on the at least one bandwidth resource.

[0021] As an example, a bandwidth resource is a partial resource of a bandwidth part (BWP). The resources of a BWP may include the at least one bandwidth resource.

[0022] Based on the above technical solution, the resource pattern of the reference signal on at least one bandwidth resource can be indicated by the first indication information. Compared with indicating the resource pattern of the reference signal on each bandwidth resource, this solution can further reduce signaling overhead.

[0023] In combination with the first aspect, in certain implementations of the first aspect, at least one bandwidth resource includes a first bandwidth resource and a second bandwidth resource, and the resource pattern of the reference signal on the second bandwidth resource is the same as the resource pattern of the reference signal on the first bandwidth resource; or, the first indication information includes first information, the first information indicates whether the first basic pattern is updated relative to the reference resource pattern, and the first information corresponding to the second bandwidth resource is the same as the first information corresponding to the first bandwidth resource; or, the relationship between the first basic pattern corresponding to the second bandwidth resource and the reference resource pattern is the same as the relationship between the first basic pattern corresponding to the first bandwidth resource and the reference resource pattern.

[0024] In combination with the first aspect, in some implementations of the first aspect, before receiving the first indication information, the method further includes: sending third indication information, where the third indication information indicates a recommended resource pattern of a reference signal.

[0025] As an example, the third indication information may refer to the relevant scheme of the first indication information.

[0026] In combination with the first aspect, in certain implementations of the first aspect, the reference resource pattern is a recommended reference signal resource pattern.

[0027] In combination with the first aspect, in certain implementations of the first aspect, the resource pattern of the reference signal is a resource pattern of the reference signal on a first resource, the reference resource pattern is a resource pattern of the reference signal on a second resource, and the first resource and the second resource are different; or, the reference resource pattern is a predefined or preconfigured pattern.

[0028] In combination with the first aspect, in certain implementations of the first aspect, the reference resource pattern is a resource pattern of the reference signal on the second resource, including any one of the following: the reference resource pattern is a resource pattern of the reference signal on at least one time domain unit, the reference resource pattern is a resource pattern of the reference signal on at least one frequency domain unit, the reference resource pattern is a resource pattern of the reference signal on at least one antenna port, or the reference resource pattern is a resource pattern of the reference signal on at least one antenna port group.

[0029] In a second aspect, a method for signal transmission is provided, which can be performed by an apparatus. The apparatus can be a device (such as a terminal device or a network device), or a component of a device (such as a chip or a chip system or a circuit), which is not limited in this application.

[0030] The method may include: sending first indication information, the first indication information is used to determine the resource pattern of the reference signal, the resource pattern of the reference signal includes at least one first basic pattern, the first indication information indicates the relationship between the first basic pattern and the reference resource pattern; based on the first indication information, receiving or sending the reference signal.

[0031] In combination with the second aspect, in some implementations of the second aspect, the first indication information includes first information, and the first indication information indicates the relationship between the first basic pattern and the reference resource pattern, including: the first information indicates whether the first basic pattern is updated relative to the reference resource pattern.

[0032] In combination with the second aspect, in some implementations of the second aspect, the first information indicates that the first basic pattern is updated relative to the reference resource pattern, and the first indication information further includes second information, where the second information indicates the first basic pattern.

[0033] In combination with the second aspect, in certain implementations of the second aspect, the first information indicates that the first parameter in the configuration information of the first basic pattern is updated relative to the first parameter in the configuration information of the reference resource pattern, and the second information indicates the first parameter in the configuration information of the first basic pattern.

[0034] In combination with the second aspect, in certain implementations of the second aspect, the reference resource pattern includes at least one second basic pattern, and the first indication information indicates the relationship between the first basic pattern and the reference resource pattern, including: the first indication information indicates the relationship between the first basic pattern and the second basic pattern.

[0035] In combination with the second aspect, in certain implementations of the second aspect, the configuration information of the first basic pattern includes one or more of the following information: the starting position of the first basic pattern, the domain corresponding to the first basic pattern, and the resource of the reference signal indicated by the first basic pattern, wherein the domain corresponding to the first basic pattern is any one of the following: time domain, frequency domain, and spatial domain.

[0036] In combination with the second aspect, in certain implementations of the second aspect, the resources of the reference signal indicated by the first basic pattern include at least one of the following information: the total number of resources corresponding to the first basic pattern, the total number of resources occupied by the reference signal, the resource density of the resources occupied by the reference signal, the starting position of the resources occupied by the reference signal, the ending position of the resources occupied by the reference signal, the index of the preset pattern used to obtain the first basic pattern, the offset of the resources occupied by the reference signal relative to the preset pattern, the offset direction of the resources occupied by the reference signal relative to the preset pattern, and the change in resource density of the resources occupied by the reference signal relative to the preset pattern.

[0037] In combination with the second aspect, in some implementations of the second aspect, the method further includes: sending second indication information, the second indication information indicating at least one bandwidth resource, and the at least one bandwidth resource is associated with a resource pattern of a reference signal.

[0038] In combination with the second aspect, in certain implementations of the second aspect, at least one bandwidth resource includes a first bandwidth resource and a second bandwidth resource, and the resource pattern of the reference signal on the second bandwidth resource is the same as the resource pattern of the reference signal on the first bandwidth resource; or, the first indication information includes first information, the first information indicates whether the first basic pattern is updated relative to the reference resource pattern, and the first information corresponding to the second bandwidth resource is the same as the first information corresponding to the first bandwidth resource; or, the relationship between the first basic pattern corresponding to the second bandwidth resource and the reference resource pattern is the same as the relationship between the first basic pattern corresponding to the first bandwidth resource and the reference resource pattern.

[0039] In combination with the second aspect, in some implementations of the second aspect, before receiving the first indication information, the method further includes: receiving third indication information, where the third indication information indicates a recommended resource pattern of a reference signal.

[0040] In combination with the second aspect, in certain implementations of the second aspect, the reference resource pattern is a recommended reference signal resource pattern.

[0041] In combination with the second aspect, in certain implementations of the second aspect, the resource pattern of the reference signal is the resource pattern of the reference signal on the first resource, the reference resource pattern is the resource pattern of the reference signal on the second resource, and the first resource and the second resource are different; or, the reference resource pattern is a predefined or preconfigured pattern.

[0042] In combination with the second aspect, in certain implementations of the second aspect, the reference resource pattern is a resource pattern of the reference signal on the second resource, including any one of the following: the reference resource pattern is a resource pattern of the reference signal on at least one time domain unit, the reference resource pattern is a resource pattern of the reference signal on at least one frequency domain unit, the reference resource pattern is a resource pattern of the reference signal on at least one antenna port, or the reference resource pattern is a resource pattern of the reference signal on at least one antenna port group.

[0043] In a third aspect, a method for signal transmission is provided, which can be performed by an apparatus. The apparatus can be a device (such as a terminal device or a network device), or a component of a device (such as a chip or a chip system or a circuit), which is not limited in this application.

[0044] The method may include: sending third indication information, the third indication information indicating a first resource pattern of a reference signal, the first resource pattern of the reference signal including at least one third basic pattern, the third indication information indicating a relationship between the third basic pattern and the first reference resource pattern; and receiving or sending a reference signal based on a response to the third indication information.

[0045] The first resource pattern of the reference signal can be understood as a recommended resource pattern, such as the recommended resource pattern of the reference signal in the first aspect.

[0046] Based on the above technical solution, the device can recommend a resource pattern for a reference signal, such as indicating a first resource pattern for a reference signal through third indication information, where the third indication information specifically indicates the relationship between each basic pattern (i.e., the third basic pattern) constituting the resource pattern for the reference signal (i.e., the first resource pattern) and the reference resource pattern (i.e., the first reference resource pattern). In this way, each basic pattern can be determined based on the relationship and the reference resource pattern, and then the resource pattern for the reference signal can be determined based on each basic pattern. Compared with the solution of directly indicating the resource pattern for the reference signal, this solution can reduce the signaling overhead caused by indicating the resource pattern for the reference signal. In addition, this solution can be applicable to more communication scenarios, for example, for scenarios where the resource patterns for the reference signal are unevenly distributed, or for scenarios where the resource patterns for the reference signal are sparsely distributed, this solution is also applicable.

[0047] In combination with the third aspect, in certain implementations of the third aspect, receiving or sending a reference signal based on a response to the third indication information includes: receiving confirmation information of the third indication information, the confirmation information indicating that the resource pattern of the reference signal is the first resource pattern; and receiving or sending a reference signal based on the first resource pattern.

[0048] In combination with the third aspect, in certain implementations of the third aspect, receiving or sending a reference signal based on a response to the third indication information includes: receiving first indication information, the first indication information is used to determine a second resource pattern of the reference signal, the resource pattern of the reference signal includes at least one first basic pattern, and the first indication information indicates the relationship between the first basic pattern and the second reference resource pattern; receiving or sending a reference signal based on the second resource pattern of the reference signal.

[0049] Illustratively, the second reference resource pattern is the first resource pattern or the third basic pattern.

[0050] The implementation method, such as the third indication information, the first basic pattern, etc., can refer to the description in the first aspect.

[0051] In combination with the third aspect, in certain implementations of the third aspect, the third indication information includes first information, and the third indication information indicates the relationship between the third basic pattern and the first reference resource pattern, including: the first information indicates whether the third basic pattern is updated relative to the first reference resource pattern.

[0052] In combination with the third aspect, in certain implementations of the third aspect, the first information indicates that the third basic pattern is updated relative to the first reference resource pattern, and the third indication information further includes second information, where the second information indicates the third basic pattern.

[0053] In combination with the third aspect, in certain implementations of the third aspect, the first information indicates that the first parameter in the configuration information of the third basic pattern is updated relative to the first parameter in the configuration information of the first reference resource pattern, and the second information indicates the first parameter in the configuration information of the third basic pattern.

[0054] In combination with the third aspect, in certain implementations of the third aspect, the first reference resource pattern includes at least one second basic pattern, and the third indication information indicates the relationship between the third basic pattern and the first reference resource pattern, including: the third indication information indicates the relationship between the third basic pattern and the second basic pattern.

[0055] In combination with the third aspect, in certain implementations of the third aspect, the configuration information of the third basic pattern includes one or more of the following information: the starting position of the third basic pattern, the domain corresponding to the third basic pattern, and the resource of the reference signal indicated by the third basic pattern, wherein the domain corresponding to the third basic pattern is any one of the following: time domain, frequency domain, and spatial domain.

[0056] In combination with the third aspect, in certain implementations of the third aspect, the resources of the reference signal indicated by the third basic pattern include at least one of the following information: the total number of resources corresponding to the third basic pattern, the total number of resources occupied by the reference signal, the resource density of the resources occupied by the reference signal, the starting position of the resources occupied by the reference signal, the ending position of the resources occupied by the reference signal, the index of the preset pattern used to obtain the third basic pattern, the offset of the resources occupied by the reference signal relative to the preset pattern, the offset direction of the resources occupied by the reference signal relative to the preset pattern, and the change in resource density of the resources occupied by the reference signal relative to the preset pattern.

[0057] In combination with the third aspect, in certain implementations of the third aspect, the method further includes: receiving second indication information, the second indication information indicating at least one bandwidth resource, and the at least one bandwidth resource is associated with a resource pattern of a reference signal.

[0058] In combination with the third aspect, in certain implementations of the third aspect, at least one bandwidth resource includes a first bandwidth resource and a second bandwidth resource, and the resource pattern of the reference signal on the second bandwidth resource is the same as the resource pattern of the reference signal on the first bandwidth resource; or, the third indication information includes first information, the first information indicates whether the third basic pattern is updated relative to the first reference resource pattern, and the first information corresponding to the second bandwidth resource is the same as the first information corresponding to the first bandwidth resource; or, the relationship between the third basic pattern corresponding to the second bandwidth resource and the first reference resource pattern is the same as the relationship between the third basic pattern corresponding to the first bandwidth resource and the first reference resource pattern.

[0059] In combination with the third aspect, in certain implementations of the third aspect, the resource pattern of the reference signal is the resource pattern of the reference signal on the first resource, the first reference resource pattern is the resource pattern of the reference signal on the second resource, and the first resource and the second resource are different; or, the first reference resource pattern is a predefined or preconfigured pattern; or, the first reference resource pattern is the second resource pattern or the third basic pattern.

[0060] In combination with the third aspect, in certain implementations of the third aspect, the first reference resource pattern is a resource pattern of the reference signal on the second resource, including any one of the following: the first reference resource pattern is a resource pattern of the reference signal on at least one time domain unit, the first reference resource pattern is a resource pattern of the reference signal on at least one frequency domain unit, the first reference resource pattern is a resource pattern of the reference signal on at least one antenna port, or the first reference resource pattern is a resource pattern of the reference signal on at least one antenna port group.

[0061] In a fourth aspect, a method for signal transmission is provided, which can be performed by an apparatus. The apparatus can be a device (such as a terminal device or a network device), or a component of a device (such as a chip or a chip system or a circuit), which is not limited in this application.

[0062] The method may include: receiving third indication information, the third indication information indicating a first resource pattern of a reference signal, the first resource pattern of the reference signal including at least one third basic pattern, the third indication information indicating a relationship between the third basic pattern and the first reference resource pattern; and receiving or sending a reference signal based on a response to the third indication information.

[0063] In combination with the fourth aspect, in certain implementations of the fourth aspect, receiving or sending a reference signal based on a response to the third indication information includes: sending confirmation information of the third indication information, the confirmation information indicating that the resource pattern of the reference signal is the first resource pattern; and receiving or sending a reference signal based on the first resource pattern.

[0064] In combination with the fourth aspect, in certain implementations of the fourth aspect, receiving or sending a reference signal based on a response to the third indication information includes: sending first indication information, the first indication information is used to determine a second resource pattern of the reference signal, the resource pattern of the reference signal includes at least one first basic pattern, and the first indication information indicates the relationship between the first basic pattern and the second reference resource pattern; receiving or sending a reference signal based on the second resource pattern of the reference signal.

[0065] In combination with the fourth aspect, in certain implementations of the fourth aspect, the third indication information includes first information, and the third indication information indicates the relationship between the third basic pattern and the first reference resource pattern, including: the first information indicates whether the third basic pattern is updated relative to the first reference resource pattern.

[0066] In combination with the fourth aspect, in certain implementations of the fourth aspect, the first information indicates that the third basic pattern is updated relative to the first reference resource pattern, and the third indication information further includes second information, where the second information indicates the third basic pattern.

[0067] In combination with the fourth aspect, in certain implementations of the fourth aspect, the first information indicates that the first parameter in the configuration information of the third basic pattern is updated relative to the first parameter in the configuration information of the first reference resource pattern, and the second information indicates the first parameter in the configuration information of the third basic pattern.

[0068] In combination with the fourth aspect, in certain implementations of the fourth aspect, the first reference resource pattern includes at least one second basic pattern, and the third indication information indicates the relationship between the third basic pattern and the first reference resource pattern, including: the third indication information indicates the relationship between the third basic pattern and the second basic pattern.

[0069] In combination with the fourth aspect, in certain implementations of the fourth aspect, the configuration information of the third basic pattern includes one or more of the following information: the starting position of the third basic pattern, the domain corresponding to the third basic pattern, and the resource of the reference signal indicated by the third basic pattern, wherein the domain corresponding to the third basic pattern is any one of the following: time domain, frequency domain, and spatial domain.

[0070] In combination with the fourth aspect, in certain implementations of the fourth aspect, the resources of the reference signal indicated by the third basic pattern include at least one of the following information: the total number of resources corresponding to the third basic pattern, the total number of resources occupied by the reference signal, the resource density of the resources occupied by the reference signal, the starting position of the resources occupied by the reference signal, the ending position of the resources occupied by the reference signal, the index of the preset pattern used to obtain the third basic pattern, the offset of the resources occupied by the reference signal relative to the preset pattern, the offset direction of the resources occupied by the reference signal relative to the preset pattern, and the change in resource density of the resources occupied by the reference signal relative to the preset pattern.

[0071] In combination with the fourth aspect, in certain implementations of the fourth aspect, the method further includes: sending second indication information, the second indication information indicating at least one bandwidth resource, and the at least one bandwidth resource is associated with a resource pattern of a reference signal.

[0072] In combination with the fourth aspect, in certain implementations of the fourth aspect, at least one bandwidth resource includes a first bandwidth resource and a second bandwidth resource, and the resource pattern of the reference signal on the second bandwidth resource is the same as the resource pattern of the reference signal on the first bandwidth resource; or, the third indication information includes first information, the first information indicates whether the third basic pattern is updated relative to the first reference resource pattern, and the first information corresponding to the second bandwidth resource is the same as the first information corresponding to the first bandwidth resource; or, the relationship between the third basic pattern corresponding to the second bandwidth resource and the first reference resource pattern is the same as the relationship between the third basic pattern corresponding to the first bandwidth resource and the first reference resource pattern.

[0073] In combination with the fourth aspect, in certain implementations of the fourth aspect, the resource pattern of the reference signal is the resource pattern of the reference signal on the first resource, the first reference resource pattern is the resource pattern of the reference signal on the second resource, and the first resource and the second resource are different; or, the first reference resource pattern is a predefined or preconfigured pattern; or, the first reference resource pattern is the second resource pattern or the third basic pattern.

[0074] In combination with the fourth aspect, in certain implementations of the fourth aspect, the first reference resource pattern is a resource pattern of the reference signal on the second resource, including any one of the following: the first reference resource pattern is a resource pattern of the reference signal on at least one time domain unit, the first reference resource pattern is a resource pattern of the reference signal on at least one frequency domain unit, the first reference resource pattern is a resource pattern of the reference signal on at least one antenna port, or the first reference resource pattern is a resource pattern of the reference signal on at least one antenna port group.

[0075] The beneficial effects and possible implementation methods of the second to fourth aspects can be referred to the relevant description of the first aspect and will not be repeated here.

[0076] In a fifth aspect, a communication device is provided, the device being configured to execute the method provided in any one of the first to fourth aspects. Specifically, the device may include units and / or modules, such as a processing unit and / or a communication unit, for executing the method provided in any one of the above implementations of any one of the first to fourth aspects.

[0077] In one implementation, the apparatus is a communication device (e.g., a terminal device or a network device). When the apparatus is a communication device, the communication unit may be a transceiver or an input / output interface; the processing unit may be at least one processor. Alternatively, the transceiver may be a transceiver circuit. Alternatively, the input / output interface may be an input / output circuit.

[0078] In another implementation, the apparatus is a chip, chip system, or circuit used in a communication device. When the apparatus is a chip, chip system, or circuit used in a communication device, the communication unit may be an input / output interface, interface circuit, output circuit, input circuit, pin, or related circuit on the chip, chip system, or circuit; and the processing unit may be at least one processor, processing circuit, or logic circuit.

[0079] In a sixth aspect, a communication device is provided, which includes: a memory for storing programs; and at least one processor for executing computer programs or instructions stored in the memory to execute the method provided by any of the above-mentioned implementation methods of any of the above-mentioned first to fourth aspects.

[0080] In one implementation, the apparatus is a communication device (such as a terminal device or a network device).

[0081] In another implementation, the apparatus is a chip, a chip system, or a circuit used in a communication device.

[0082] In a seventh aspect, the present application provides a processor for executing the methods provided in the above aspects.

[0083] For the operations such as sending and acquiring / receiving involved in the processor, unless otherwise specified, or if they do not conflict with their actual functions or internal logic in the relevant descriptions, they can be understood as operations such as processor output and input, or as sending and receiving operations performed by the radio frequency circuit and antenna. This application does not limit this.

[0084] In an eighth aspect, a computer-readable storage medium is provided, which stores a program code for execution by a device, and the program code includes a method provided by any one of the above-mentioned implementation methods for executing any one of the above-mentioned first to fourth aspects.

[0085] In a ninth aspect, a computer program product comprising instructions is provided, which, when executed on a computer, enables the computer to execute the method provided by any one of the above-mentioned implementations of any one of the above-mentioned first to fourth aspects.

[0086] In the tenth aspect, a chip is provided, which includes a processor and a communication interface. The processor reads instructions stored in a memory through the communication interface and executes the method provided by any of the above-mentioned implementation methods of any of the above-mentioned first to fourth aspects.

[0087] Optionally, as an implementation method, the chip also includes a memory, in which a computer program or instruction is stored, and the processor is used to execute the computer program or instruction stored on the memory. When the computer program or instruction is executed, the processor is used to execute the method provided in any one of the above-mentioned implementation methods of any one of the first to fourth aspects.

[0088] In an eleventh aspect, a communication system is provided, comprising a first communication device and a second communication device. The first communication device is configured to execute the method provided in any one of the implementations of the first aspect, and the second communication device is configured to execute the method provided in any one of the implementations of the second aspect; or the first communication device is configured to execute the method provided in any one of the implementations of the third aspect, and the second communication device is configured to execute the method provided in any one of the implementations of the fourth aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0089] FIG1 is a schematic diagram of a wireless communication system applicable to an embodiment of the present application.

[0090] FIG2 is a schematic diagram of a signal transmission method 200 provided in an embodiment of the present application.

[0091] FIG3 is a schematic diagram of a resource pattern and a basic pattern of a reference signal.

[0092] FIG. 4 is a schematic diagram of a preset pattern and a basic pattern.

[0093] FIG5 is a schematic diagram of a basic pattern.

[0094] FIG6 is another schematic diagram of the basic pattern.

[0095] FIG7 is a schematic diagram of a reference resource pattern.

[0096] FIG8 is a schematic diagram of a reference resource pattern and a basic pattern.

[0097] FIG9 is a schematic diagram of a preset pattern.

[0098] FIG10 is a schematic diagram illustrating the association between bandwidth resources and reference signal resource patterns.

[0099] FIG11 is a schematic diagram of a signal transmission method 1100 provided in an embodiment of the present application.

[0100] FIG12 is a schematic flowchart of a signal transmission method 1200 provided according to an embodiment of the present application.

[0101] FIG13 is a schematic flowchart of a method 1300 provided according to another embodiment of the present application.

[0102] FIG14 is a schematic flowchart of a method 1400 provided according to another embodiment of the present application.

[0103] FIG15 is a schematic flowchart of a method 1500 provided according to another embodiment of the present application.

[0104] FIG16 is a schematic block diagram of a communication device 1600 provided in an embodiment of the present application.

[0105] FIG17 is a schematic diagram of another communication device 1700 provided in an embodiment of the present application.

[0106] FIG18 is a schematic diagram of a chip system 1800 provided in accordance with an embodiment of the present application. DETAILED DESCRIPTION

[0107] The technical solution in this application will be described below with reference to the accompanying drawings.

[0108] The technical solutions provided in this application can be applied to various communication systems, such as: fifth generation (5G) or new radio (NR) systems, long term evolution (LTE) systems, LTE frequency division duplex (FDD) systems, LTE time division duplex (TDD) systems, etc. The technical solutions provided in this application can also be applied to low-frequency scenarios, high-frequency scenarios, terahertz, optical communications, etc. The technical solutions provided in this application can also be applied to future communication systems, such as the sixth generation (6G) mobile communication system. The technical solutions provided in this application can also be applied to device to device (D2D) communication, vehicle-to-everything (V2X) communication, machine to machine (M2M) communication, machine type communication (MTC), and Internet of Things (IoT) communication systems. The technical solutions provided in this application can also be applied to non-terrestrial network (NTN) systems such as intersatellite communication and satellite communication. As an example, a satellite communication system includes a satellite base station and terminal devices. The satellite base station provides communication services to the terminal devices. The satellite base station can also communicate with other base stations. Satellites can function as both base stations and terminal devices. Satellites can refer to drones, hot air balloons, low-orbit satellites, medium-orbit satellites, high-orbit satellites, and other satellites. Satellites can also refer to non-ground base stations or non-ground devices.

[0109] A device in a communication system can send signals to or receive signals from another device. These signals may include information, signaling, or data. The term "device" can also be replaced by an entity, network entity, network element, communication device, communication module, node, communication node, and the like. This disclosure uses devices as examples for description. For example, a communication system may include at least one terminal device and at least one network device. A network device can send downlink signals to a terminal device, and / or a terminal device can send uplink signals to a network device.

[0110] The terminal devices in the embodiments of the present application include various devices with wireless communication functions, which can be used to connect people, objects, machines, etc. The terminal devices can be widely used in various scenarios, such as: cellular communication, D2D, V2X, peer to peer (P2P), M2M, MTC, IoT, virtual reality (VR), augmented reality (AR), industrial control, autonomous driving, telemedicine, smart grid, smart furniture, smart office, smart wearable, smart transportation, smart city drones, robots, remote sensing, passive sensing, positioning, navigation and tracking, autonomous delivery, etc. The terminal device can be a terminal in any of the above scenarios, such as an MTC terminal, an IoT terminal, etc. The terminal device may be a user equipment (UE) of the third generation partnership project (3GPP) standard, a terminal, a fixed device, a mobile station device or a mobile device, a subscriber unit, a handheld device, a vehicle-mounted device, a wearable device, a cellular phone, a smart phone, a SIP phone, a wireless data card, a personal digital assistant (PDA), a computer, a tablet computer, a notebook computer, a wireless modem, a handheld device, a laptop computer, a computer with wireless transceiver function, a smart book, a vehicle, a satellite, a global positioning system (GPS) device, a target tracking device, an aircraft (such as a drone, a helicopter, a multi-copter, a quadcopter, or an airplane), a ship, a remote control device, a smart home device, an industrial device, or a device built into the above-mentioned device (such as a communication module, a modem or a chip in the above-mentioned device), or other processing devices connected to a wireless modem. For ease of description, the terminal device will be described below by taking the terminal or UE as an example.

[0111] It should be understood that in some scenarios, a UE can also be used to act as a base station. For example, a UE can act as a scheduling entity that provides sidelink signals between UEs in scenarios such as V2X, D2D, or P2P.

[0112] In the embodiments of the present application, the device for implementing the function of the terminal device, i.e., the terminal device, can be the terminal device, or a device capable of supporting the terminal device to implement the function, such as a chip system or chip, which can be installed in the terminal device. In the embodiments of the present application, the chip system can be composed of a chip, or can include a chip and other discrete devices.

[0113] The network device in the embodiments of the present application may be a device for communicating with a terminal device, and may also be referred to as an access network device or a radio access network device. For example, the network device may be a base station. The network device in the embodiments of the present application may refer to a radio access network (RAN) node (or device) that connects a terminal device to a wireless network. Base station can broadly cover various names as follows, or replace the following names, such as: NodeB, evolved NodeB (eNB), next generation NodeB (gNB), relay station, access point, transmission point (TRP), transmission point, master station, auxiliary station, multi-standard wireless (motor slide retainer, MSR) node, home base station, network controller, access node, wireless node, access point (AP), transmission node, transceiver node, baseband unit (BBU), remote radio unit (RRU), active antenna unit (AAU), remote radio head (RRH), central unit (CU), distributed unit (DU), positioning node, etc. The base station can be a macro base station, a micro base station, a relay node, a donor node or the like, or a combination thereof. The base station can also refer to a communication module, modem or chip used to be set in the aforementioned device or apparatus. The base station can also be a mobile switching center and a device that performs base station functions in D2D, V2X, and M2M communications, a network-side device in a 6G network, or a device that performs base station functions in future communication systems. The base station can support networks with the same or different access technologies. The embodiments of this application do not limit the specific technology and specific device form used by the network equipment.

[0114] Base stations can be fixed or mobile. For example, a helicopter or drone can be configured to act as a mobile base station, and one or more cells can move based on the location of the mobile base station. In other examples, a helicopter or drone can be configured to act as a device that communicates with another base station.

[0115] In some deployments, the network device mentioned in the embodiments of the present application may be a device including a CU, or a DU, or a device including a CU and a DU, or a control plane CU node (central unit control plane (central unit-control plane, CU-CP)) and a user plane CU node (central unit user plane (central unit-user plane, CU-UP)) and a DU node.

[0116] In the embodiments of the present application, the apparatus for implementing the function of the network device can be the network device, or it can be an apparatus capable of supporting the network device to implement the function, such as a chip system or chip, which can be installed in the network device. In the embodiments of the present application, the chip system can be composed of a chip, or it can include a chip and other discrete devices.

[0117] The network equipment and terminal devices can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on water; they can also be deployed in the air on aircraft, balloons, and satellites. The embodiments of this application do not limit the scenarios in which the network equipment and terminal devices are located.

[0118] First, a communication system applicable to the embodiments of the present application is briefly introduced as follows.

[0119] Refer to FIG1 , which is a schematic diagram of a wireless communication system applicable to an embodiment of the present application.

[0120] As shown in Figure 1, the wireless communication system includes a radio access network 100. Radio access network 100 can be a next-generation (e.g., 6G or higher) radio access network, or a traditional (e.g., 5G, 4G, 3G, or 2G) radio access network. One or more terminal devices (120a-120j, collectively referred to as 120) can be connected to each other or to one or more network devices (110a, 110b, collectively referred to as 110) in radio access network 100. Network elements in the wireless communication system are connected via interfaces (e.g., NG, Xn), or air interfaces.

[0121] FIG1 is only a schematic diagram. The wireless communication system may further include other devices, such as core network devices, wireless relay devices and / or wireless backhaul devices, which are not shown in FIG1 .

[0122] In order to facilitate a better understanding of the technical solution of this application, some related technologies involved in the technical solution of this application are introduced.

[0123] 1. Reference signal

[0124] Reference signals can also be called pilots, reference sequences, or base signals. For consistency, the term "reference signal" is used throughout this article. A reference signal is a physical signal that carries a sequence and is transmitted to achieve a specific function. Specifically, a reference signal is a physical signal generated by mapping a specific sequence to the corresponding resources using a pre-transmitted resource mapping method.

[0125] In the present application, the reference signal (RS) involved, as an example, can be any of the following: channel state information reference signal (CSI-RS), sounding reference signal (SRS), demodulation reference signal (DMRS), phase tracking reference signal (PT-RS), cell reference signal (CRS), etc.

[0126] It should be understood that the reference signals listed above are only examples and should not constitute any limitation to this application. This application does not exclude the possibility of defining other reference signals in future protocols to achieve the same or similar functions.

[0127] 2. Resources

[0128] Data or information can be carried by resources.

[0129] In the time domain, resources may include one or more time domain units (or time units). A time domain unit may be a symbol, an orthogonal frequency division multiplexing (OFDM) symbol, a mini-slot, a slot, a partial slot, a subframe, or a radio frame.

[0130] In the frequency domain, resources can include one or more frequency domain units. A frequency domain unit can be a resource block (RB), a subcarrier, a resource block group (RBG), a subband, a precoding resource block group (PRG), a bandwidth part (BWP), a carrier, or a serving cell.

[0131] In the spatial domain, resources can include one or more spatial units. An antenna port can be an antenna port. An antenna port, also referred to as a port, can include a transmit port (or transmitting port) and a receive port. Depending on the signals they carry, antenna ports can be further divided into reference signal antenna ports (also known as reference signal ports or pilot ports) and data antenna ports (referred to as data ports).

[0132] In 5G systems, reference signals are densely distributed along the frequency direction. In the case of multiple antenna ports, reference signals are densely distributed along the frequency direction of each antenna port. With the advancement of communication technology, the number of antenna ports will increase. Using the traditional approach, where reference signals are densely distributed along the frequency direction of each antenna port, the number of reference signals will be greatly increased, thereby increasing the overhead of reference signal resources. To reduce the overhead of reference signal resources, a sparse reference signal pattern can be designed. A sparse reference signal pattern means that the reference signals are sparsely distributed in one or more of the time, frequency, and spatial domains. For example, sparse spatial distribution of reference signals means that reference signals are transmitted on a small number of transmit antenna ports, unlike the traditional approach where reference signals are transmitted on some or all consecutive antenna ports. For another example, sparse frequency distribution of reference signals means that each reference signal port occupies a small amount of resources in the frequency domain, unlike the traditional approach where each reference signal port occupies a uniform, high-density frequency domain resource. For example, sparse reference signal distribution in the time domain means that each reference signal port occupies a small amount of time domain resources, unlike the traditional approach where each reference signal port occupies a uniform, high-density time domain resource. Furthermore, in the traditional approach, the frequency domain layout of reference signals is the same across different antenna ports. Unlike the traditional approach, the frequency domain layout of sparse reference signals can be different across different antenna ports. However, the use of a sparse reference signal pattern significantly increases the indication overhead of the reference signal pattern.

[0133] In view of this, the present application proposes a method to achieve indication of reference signal patterns with lower overhead.

[0134] Before introducing the solution of this application, the following points are explained.

[0135] (1) In this application, “indication” may include direct indication, indirect indication, explicit indication, and implicit indication. When describing that a certain indication information is used to indicate A, it can be understood that the indication information carries A, directly indicates A, or indirectly indicates A.

[0136] In this application, the information indicated by the indication information is referred to as the information to be indicated. In the specific implementation process, there are many ways to indicate the information to be indicated, such as but not limited to, the information to be indicated can be directly indicated, such as the information to be indicated itself or the index of the information to be indicated. The information to be indicated can also be indirectly indicated by indicating other information, wherein there is an association between the other information and the information to be indicated. It is also possible to indicate only a part of the information to be indicated, while the other parts of the information to be indicated are known or agreed in advance. For example, the indication of specific information can also be achieved with the help of the arrangement order of each information agreed in advance (for example, stipulated by the protocol), thereby reducing the indication overhead to a certain extent. In addition, the information to be indicated can be sent together as a whole, or it can be divided into multiple sub-information and sent separately, and the sending period and / or sending time of these sub-information can be the same or different.

[0137] (2) In this application, "sending" and "receiving" indicate the direction of signal transmission. For example, "sending information to XX" can be understood as the destination of the information being XX, which can include direct sending through the air interface, and also include indirect sending through the air interface by other units or modules. "Receiving information from YY" can be understood as the source of the information being YY, which can include direct receiving from YY through the air interface, and also include indirect receiving from YY through the air interface from other units or modules. "Sending" can also be understood as the "output" of the chip interface, and "receiving" can also be understood as the "input" of the chip interface. In other words, sending and receiving can be carried out between devices, for example, between a network device and a terminal device, or can be carried out within a device, for example, sending or receiving between components, modules, chips, software modules or hardware modules within the device through a bus, a line or an interface.

[0138] (3) In various embodiments of the present application, “reference signal resources” are mentioned many times, which refers to the resources occupied by reference signals.

[0139] (4) In the various embodiments of the present application, unless otherwise specified or there is a logical conflict, the terms and / or descriptions between different embodiments are consistent and can be referenced by each other. The technical features in different embodiments can be combined to form new embodiments according to their inherent logical relationships.

[0140] (5) In this application, the terms "first" and "second" are used for convenience of description only and are not intended to limit the scope of the embodiments of this application. They are not used to describe the order or precedence of features. It should be understood that the terms described in this manner may be interchangeable, where appropriate, to describe solutions other than the embodiments of this application.

[0141] The method provided by the embodiment of the present application is described in detail below with reference to the accompanying drawings. The embodiment provided by the present application can be applied to the communication system shown in FIG1 above without limitation.

[0142] In the following embodiments, the first device and the second device are taken as examples for illustrative description.

[0143] Among them, the first device can be a terminal device or a component of a terminal device (such as a chip or circuit), or the first device can be a network device or a component of a network device (such as a chip or circuit), or the first device can be an AI node or a component of an AI node (such as a chip or circuit).

[0144] The second device may be a terminal device or a component of a terminal device (such as a chip or circuit), or the first device may be a network device or a component of a network device (such as a chip or circuit), or the first device may be an AI node or a component of an AI node (such as a chip or circuit).

[0145] Referring to Figure 2, Figure 2 is a schematic diagram of a signal transmission method 200 provided in an embodiment of the present application. The method 200 shown in Figure 2 may include the following steps.

[0146] 201. A first device receives first indication information, where the first indication information is used to determine a resource pattern of a reference signal, where the resource pattern of the reference signal includes at least one first basic pattern, and the first indication information indicates a relationship between the first basic pattern and the reference resource pattern.

[0147] Correspondingly, the second device sends the first indication information.

[0148] First, let’s introduce the concepts involved in this application.

[0149] 1) Reference signal resource pattern: This refers to the reference signal pattern, such as the distribution of the reference signal on a resource element, and refers to the mapping of time domain resource location information and / or frequency domain resource location information on a resource element to an antenna port. A resource element includes at least one resource dimension, such as a time domain resource dimension, a frequency domain resource dimension, or a spatial domain resource dimension. Specifically, a resource element includes, for example, at least one of the following: a time domain element, a frequency domain element, an antenna port, or an antenna port group.

[0150] 2) Basic pattern: The resource pattern of the reference signal may be composed of at least one pattern. The pattern constituting the resource pattern of the reference signal is called a basic pattern.

[0151] See Figure 3, which is a schematic diagram of a reference signal resource pattern and a basic pattern. As shown in Figure 3, assuming that the reference signal resource pattern represents the frequency domain resource position distribution of a reference signal antenna port or antenna port group in a time domain unit (e.g., a slot, or a symbol within a slot) and a frequency domain unit (e.g., a subband), the reference signal resource pattern is composed of two basic patterns, namely basic pattern #1 and basic pattern #2.

[0152] In the embodiments of the present application, for the purpose of distinction, the basic pattern in the resource pattern of the reference signal is referred to as a first basic pattern, that is, the resource pattern of the reference signal includes at least one first basic pattern, such as the resource pattern of the reference signal includes two first basic patterns, and also as the resource pattern of the reference signal includes more than two first basic patterns.

[0153] 3) Reference resource pattern: A pattern used for comparison with the resource pattern of a reference signal, or a pattern used for comparison with the basic pattern in the resource pattern of a reference signal, is called a reference resource pattern (or simply a reference pattern). For example, the resource pattern of a reference signal reflects the position distribution of the reference signal on resource element #1, and the reference resource pattern reflects the position distribution of the reference signal on resource element #2. Resource element #1 and resource element #2 are different. Specifically, at least one resource dimension in resource element #1 and resource element #2 is different. For another example, the resource pattern of a reference signal reflects the position distribution of the reference signal on a certain resource element, and the reference resource pattern is preconfigured or predefined.

[0154] Optionally, the reference resource pattern includes at least one basic pattern. In the embodiment of the present application, for the sake of distinction, the basic pattern in the reference resource pattern is referred to as the second basic pattern, that is, the reference resource pattern includes at least one second basic pattern. Furthermore, the first indication information indicates the relationship between the first basic pattern and the reference resource pattern, which may be: the first indication information indicates the relationship between the first basic pattern and the second basic pattern, that is, the first indication information indicates the relationship between each first basic pattern in the resource pattern of the reference signal and each second basic pattern in the reference resource pattern. The number of first basic patterns in the resource pattern of the reference signal and the number of second basic patterns in the reference resource pattern may be the same or different, and there is no limitation on this.

[0155] 4) Preset pattern: The pattern used to obtain the basic pattern is called a preset pattern.

[0156] See Figure 4, which is a schematic diagram of a preset pattern and a basic pattern. As shown in Figure 4, for example, by shifting the reference signal resources in the preset pattern, such as shifting the reference signal resources downward by 3 bits, basic pattern #1 is obtained. As another example, by adjusting the resource density of the reference signal resources in the preset pattern, such as increasing the resource density by 2 times, basic pattern #2 is obtained. The resource density of the reference signal resources represents the number of resources between every two reference signal resources + 1.

[0157] The above explains the relevant concepts of the term "pattern" involved in the embodiments of the present application. It can be understood that the names of the above terms (such as basic pattern, preset pattern, etc.) are for distinction, and their names do not limit the scope of protection of the embodiments of the present application.

[0158] 202. The first device receives or sends a reference signal based on the first indication information.

[0159] Specifically, the first indication information is used to determine the resource pattern of the reference signal, so that the terminal device can obtain the resource pattern of the reference signal based on the first indication information and then use the resource pattern of the reference signal to receive or send the reference signal. The solution of the first indication information will be described in detail later.

[0160] In one possible implementation, the first device receives a reference signal based on the first indication information, and accordingly, the second device sends a reference signal. For example, assuming that the first device is a terminal device and the second device is a network device, in step 202, the terminal device receives a downlink reference signal (such as a CSI-RS or a DMRS) based on the first indication information.

[0161] In another possible implementation, the first device sends a reference signal based on the first indication information, and the second device receives the reference signal accordingly. For example, assuming that the first device is a terminal device and the second device is a network device, in step 202, the terminal device sends an uplink reference signal (such as an SRS or a DMRS, etc.) based on the first indication information.

[0162] Through the embodiments of the present application, the first indication information used to determine the resource pattern of the reference signal specifically indicates the relationship between the basic patterns that constitute the resource pattern of the reference signal and the reference resource pattern. The first device can determine the basic patterns based on the relationship and the reference resource pattern, and then determine the resource pattern of the reference signal based on the basic patterns. Compared to a solution that directly indicates the resource pattern of the reference signal, the solution of the embodiments of the present application can reduce the signaling overhead caused by indicating the resource pattern of the reference signal.

[0163] The various solutions of the embodiments of the present application are described in detail below.

[0164] Aspect 1: Related solutions for basic patterns: The solutions for basic patterns described below can be applied to both the first basic pattern and the second basic pattern.

[0165] Optionally, the configuration information of the basic pattern includes at least one of the following: a starting position of the basic pattern, a domain corresponding to the basic pattern, and reference signal resource information indicated by the basic pattern. For example, in step 201, the first indication information indicates a relationship between the first basic pattern and the reference resource pattern, indicating that the first indication information indicates a relationship between the configuration information of the first basic pattern and the configuration information of the second pattern. In this way, the first device can determine the configuration information of the first basic pattern based on the first indication information.

[0166] The above three pieces of information are introduced below respectively.

[0167] 1. Reference signal resource information indicated by the basic pattern

[0168] The reference signal resource information indicated by the basic pattern, or simply referred to as the reference signal resource information of the basic pattern, can be used to determine the position of the reference signal resource in the basic pattern.

[0169] Optionally, the reference signal resource information indicated by the basic pattern includes at least one of the following: the total number of resources corresponding to the basic pattern, the total number of resources of the reference signal resources, the resource density of the reference signal resources, the starting position of the reference signal resources, the ending position of the reference signal resources, the index of the preset pattern used to obtain the basic pattern, the offset of the reference signal resource relative to the preset pattern, the offset direction of the reference signal resource relative to the preset pattern, and the change in resource density of the reference signal resource relative to the preset pattern.

[0170] The above information is described below in conjunction with Figures 4 and 5.

[0171] Refer to FIG5 , which is a schematic diagram of a basic pattern.

[0172] 1) Total number of resources corresponding to the basic pattern: indicates the total number of resources included in the basic pattern. As shown in FIG5 , in the example shown in FIG5 , the total number of resources corresponding to the basic pattern is L (L=12).

[0173] Among them, the total number of resources corresponding to the basic pattern can be the total number of time domain resources of the basic pattern in the time domain (such as the total number of time domain units), or it can be the total number of frequency domain resources of the basic pattern in the frequency domain (such as the total number of frequency domain units), or it can be the total number of spatial domain resources of the basic pattern in the spatial domain (such as the total number of ports), which may depend on whether the domain corresponding to the basic pattern is the time domain, frequency domain or spatial domain.

[0174] 2) Total number of reference signal resources: indicates the total number of reference signal resources included in the basic pattern, that is, the total number of resources occupied by reference signals. As shown in FIG5 , in the example shown in FIG5 , the total number of reference signal resources is l (l=2).

[0175] 3) Reference signal resource density: Assuming that the reference signal resources in the basic pattern are uniformly distributed, the reference signal resource density can be: the number of resources between every two reference signal resources in the basic pattern + 1. As shown in Figure 5, in the example shown in Figure 5, the reference signal resource density is P (P = 7).

[0176] 4) Starting position of reference signal resource: indicates the position of the first reference signal resource in the basic pattern, as shown in FIG5 .

[0177] 5) End position of reference signal resource: indicates the position of the last reference signal resource in the basic pattern, as shown in FIG5 .

[0178] 6) Preset pattern index: used to identify the preset pattern.

[0179] As an example, a plurality of preset patterns are predefined, preconfigured, or pre-agreed, and the basic pattern may be obtained through one or more preset patterns.

[0180] For example, as shown in FIG4 , basic pattern #1 may be obtained through a preset pattern. Specifically, basic pattern #1 may be obtained by shifting the reference signal resources in the preset pattern downward by 3 resource units.

[0181] For another example, as shown in FIG4 , basic pattern #2 may be obtained through a preset pattern. Specifically, basic pattern #2 may be obtained by increasing the resource density of the reference signal resources in the preset pattern by two times.

[0182] 7) Offset of reference signal resources relative to the preset pattern: represents the offset of the reference signal resources in the basic pattern relative to the preset pattern. In other words, compared with the reference signal resources in the preset pattern, the offset of the reference signal resources in the basic pattern.

[0183] For example, as shown in FIG4 , relative to the preset pattern, the offset of the reference signal resource in basic pattern # 1 is 3, that is, the position of the reference signal resource in basic pattern # 1 is shifted downward by 3 resource units.

[0184] For another example, as shown in Figure 4, relative to the preset pattern, the offset of the starting position of the reference signal resource in basic pattern #2 is 3, that is, the starting position of the reference signal resource in basic pattern #2 is shifted downward by 3 resource units relative to the starting position of the reference signal resource in the preset pattern.

[0185] 8) Offset direction of reference signal resources relative to the preset pattern: indicates the offset direction of the reference signal resources in the basic pattern relative to the preset pattern. In other words, compared with the reference signal resources in the preset pattern, the offset direction of the reference signal resources in the basic pattern.

[0186] For example, as shown in FIG4 , relative to the preset pattern, the offset direction of the reference signal resource in basic pattern #1 is downward, and the offset direction of the starting position of the reference signal resource in basic pattern #2 is downward.

[0187] As an example, it can be agreed, predefined, or preconfigured in advance that “-” represents a downward offset and “+” represents an upward offset, so that the offset direction can be determined based on “+” and “-”.

[0188] 9) Change in resource density of reference signal resources relative to the preset pattern: represents the change in resource density of reference signal resources in the basic pattern relative to the preset pattern. In other words, the change in resource density of reference signal resources in the basic pattern compared to the reference signal resources in the preset pattern.

[0189] For example, as shown in FIG4 , relative to the preset pattern, the resource density of the reference signal resources in basic pattern #1 does not change, that is, it is 6.

[0190] 4 , the resource density of the reference signal resources in basic pattern #2 is increased by a factor of 2 relative to the preset pattern. Specifically, the resource density of the reference signal resources in the preset pattern is 6, while the resource density of the reference signal resources in basic pattern #2 is 3.

[0191] The above describes the meaning of each message. Here are some examples.

[0192] Example 1: The reference signal resource information of the basic pattern includes the total number of reference signal resources, the resource density of the reference signal resources, and the starting position of the reference signal resources.

[0193] In this example, the first device can determine the position of the first reference signal resource in the basic pattern based on the starting position of the reference signal resource, and the first device can determine the positions of all reference signal resources in the basic pattern based on the position of the first reference signal resource, the total number of reference signal resources, and the resource density of the reference signal resources.

[0194] Example 2: The reference signal resource information of the basic pattern includes: the total number of reference signal resources, the resource density of the reference signal resources, and the end position of the reference signal resources.

[0195] In this example, the first device can determine the position of the last reference signal resource in the basic pattern based on the end position of the reference signal resource, and the first device can determine the positions of all reference signal resources in the basic pattern based on the position of the last reference signal resource, the total number of reference signal resources, and the resource density of the reference signal resources.

[0196] Example 3: The reference signal resource information of the basic pattern includes: the total number of reference signal resources, the starting position of the reference signal resources, and the ending position of the reference signal resources.

[0197] In this example, the first device may determine the position of the first reference signal resource in the basic pattern based on the starting position of the reference signal resource, and the first device may determine the position of the last reference signal resource in the basic pattern based on the ending position of the reference signal resource, and the first device may determine the positions of all reference signal resources in the basic pattern based on the position of the first reference signal resource, the position of the last reference signal resource, and the total number of reference signal resources. For example, it may be assumed that the reference signal resources in the basic pattern are uniformly arranged (or predefined or preconfigured, the reference signal resources in the basic pattern are uniformly arranged), and therefore, the positions of all reference signal resources in the basic pattern may be determined based on the position of the first reference signal resource, the position of the last reference signal resource, and the total number of reference signal resources.

[0198] Example 4: The reference signal resource information of the basic pattern includes: an offset relative to the reference signal resource of the preset pattern and an offset direction relative to the reference signal resource of the preset pattern.

[0199] In this example, it is assumed that the protocol predefines, or preconfigures, or pre-agreed on a preset pattern, so that the first device can determine the position of the reference signal resource in the basic pattern based on the position of the reference signal resource in the preset pattern, the offset of the reference signal resource relative to the preset pattern, and the offset direction of the reference signal resource relative to the preset pattern.

[0200] Example 5: The reference signal resource information of the basic pattern includes: a change in resource density relative to the reference signal resource of the preset pattern.

[0201] In this example, it is assumed that the protocol predefines, or preconfigures, or pre-agreed on a preset pattern, so that the first device can determine the position of the reference signal resource in the basic pattern based on the position of the reference signal resource in the preset pattern and the change in resource density of the reference signal resource relative to the preset pattern.

[0202] Several examples are briefly listed above. It can be understood that the reference signal resource information of the basic pattern may include one or more of the above information.

[0203] 2. Domains corresponding to basic patterns

[0204] The domain corresponding to the basic pattern, or the domain represented by the basic pattern, can be used to determine the domain on which the basic pattern represents the position distribution of the reference signal, or can be used to determine the domain on which the basic pattern represents the resource information of the reference signal.

[0205] The domain corresponding to the basic pattern is any one of the following: time domain, frequency domain, and spatial domain. If the domain corresponding to the basic pattern is the time domain, it can be determined that the basic pattern represents the position distribution (or resource information) of the reference signal in the time domain; if the domain corresponding to the basic pattern is the frequency domain, it can be determined that the basic pattern represents the position distribution (or resource information) of the reference signal in the frequency domain; if the domain corresponding to the basic pattern is the spatial domain, it can be determined that the basic pattern represents the position distribution (or resource information) of the reference signal in the spatial domain.

[0206] See Figure 6, which is another schematic diagram of a basic pattern. As shown in Figure 6, assuming that the domain corresponding to basic pattern #1 is the frequency domain, basic pattern #1 represents the position distribution (or resource information) of the reference signal in the frequency domain.

[0207] In one possible implementation, one or more bits are used to indicate the domain corresponding to the basic pattern. For example, two bits are used to indicate the domain corresponding to the basic pattern. For example, assuming that the two bits are set to "00", it indicates that the domain corresponding to the basic pattern is the time domain. For another example, assuming that the two bits are set to "01", it indicates that the domain corresponding to the basic pattern is the frequency domain. For another example, assuming that the two bits are set to "10", it indicates that the domain corresponding to the basic pattern is the spatial domain.

[0208] 3. Starting position of the basic pattern

[0209] The starting position of the basic pattern indicates the starting position of the basic pattern in the time domain, frequency domain, or spatial domain. Specifically, if the domain corresponding to the basic pattern is the time domain, the starting position of the basic pattern indicates the starting position of the basic pattern in the time domain; if the domain corresponding to the basic pattern is the frequency domain, the starting position of the basic pattern indicates the starting position of the basic pattern in the frequency domain; if the domain corresponding to the basic pattern is the spatial domain, the starting position of the basic pattern indicates the starting position of the basic pattern in the spatial domain.

[0210] In one possible implementation, the starting position of the basic pattern can be obtained by the reference point position and the offset of the starting point relative to the reference point. For example, the starting position of the basic pattern in the time domain can be obtained by the reference point position in the time domain and the offset of the starting point relative to the reference point.

[0211] For example, as shown in FIG6 , if the basic pattern corresponds to the location information of the reference signal resource in the spatial domain (i.e., the antenna port, such as antenna port #n), the starting position of the basic pattern is the starting position in the spatial domain (i.e., the antenna port, such as antenna port #n), and the starting position can be obtained by the reference point position and the offset Δp of the starting point relative to the reference point. For another example, as shown in FIG6 , if the basic pattern corresponds to the location information of the reference signal resource in the time domain, the starting position of the basic pattern is the starting position in the time domain, and the starting position can be obtained by the reference point position and the offset Δt of the starting point relative to the reference point. For another example, as shown in FIG6 , if the basic pattern corresponds to the location information of the reference signal resource in the frequency domain, the starting position of the basic pattern is the starting position in the frequency domain, and the starting position can be obtained by the reference point position and the offset Δf of the starting point relative to the reference point.

[0212] The above introduces the relevant solutions for basic patterns, and the following introduces the relevant solutions for reference resource patterns.

[0213] Aspect 2, refer to the relevant schemes of resource patterns.

[0214] Regarding the selection of reference resource patterns, there are several implementation methods as follows.

[0215] In a first possible implementation manner, the reference resource pattern is a pattern of a reference signal on a certain resource (such as a certain time domain unit, a certain frequency domain unit, or a certain spatial domain unit).

[0216] Optionally, the resource pattern of the reference signal is the resource pattern of the reference signal on the first resource, and the reference resource pattern is the resource pattern of the reference signal on the second resource, where the first resource and the second resource are different. Further optionally, the first device defaults (e.g., pre-determines or pre-configures) the reference resource pattern to the resource pattern on the second resource; or the second device indicates to the first device that the reference resource pattern is the resource pattern on the second resource, such as through any of the following signaling: control signaling on a control channel (e.g., DCI), MAC-CE, or RRC. As an example, the reference resource pattern and the first information may be carried in the same signaling.

[0217] The resources may be time domain resources (such as at least one time domain unit), or frequency domain resources (such as at least one frequency domain unit), or spatial domain resources (such as at least one antenna port, or at least one antenna port group).

[0218] See Figure 7, which is a schematic diagram of a reference resource pattern. For example, as shown in Figure 7(a), the reference resource pattern can be a resource pattern of a reference signal in the reference time domain, that is, a resource pattern of a reference signal in a certain time domain unit (such as slot 0). For another example, as shown in Figure 7(b), the reference resource pattern can be a resource pattern of a reference signal in the reference frequency domain, that is, a resource pattern of a reference signal in a certain frequency domain unit (such as subband #0). For another example, as shown in Figure 7(c), the reference resource pattern can be a resource pattern of a reference signal in the reference spatial domain, that is, a resource pattern of a reference signal on a certain antenna port (such as antenna port #1).

[0219] In a second possible implementation manner, the reference resource pattern is a predefined or preconfigured pattern.

[0220] For example, at least one reference resource pattern may be predefined by agreement.

[0221] For another example, the reference resource pattern may be preconfigured by the first device to the second device. For example, the first device preconfigures at least one reference resource pattern to the second device.

[0222] Further optionally, when the second device sends first indication information to the first device to indicate the relationship between the first basic pattern and the reference resource pattern, the second device may further indicate to the first device which reference resource pattern is involved in the first indication information.

[0223] In a third possible implementation manner, the reference resource pattern is a pattern recommended by the first device.

[0224] Optionally, before step 201, method 200 further includes: the first device sending third indication information, where the third indication information indicates a recommended reference signal resource pattern (referred to as pattern #A for differentiation). If the reference signal resource pattern configured by the second device is inconsistent with pattern #A, the second device may send the first indication information to the first device. Further, optionally, the first device defaults (e.g., pre-determines or pre-configures) the reference resource pattern to pattern #A; or, the second device indicates to the first device that the reference resource pattern is pattern #A.

[0225] The above three possible implementation methods are for illustration only and are not limiting. Any pattern that can be used for comparison with the first basic pattern is applicable to the embodiments of the present application.

[0226] In addition, as described above, the reference resource pattern optionally includes at least one basic pattern (for purposes of distinction, the basic pattern is referred to as the second basic pattern). Further optionally, the first indication information indicates a relationship between the first basic pattern and the reference resource pattern, which may be: the first indication information indicates a relationship between the first basic pattern and the second basic pattern. The following lists several possible implementations based on several different scenarios.

[0227] In scenario 1, the number of first basic patterns is the same as the number of second basic patterns.

[0228] In a possible implementation manner, the first indication information indicates the relationship between each first basic pattern and each second basic pattern.

[0229] For example, the resource pattern of the reference signal includes a first basic pattern #1 and a first basic pattern #2, the reference resource pattern includes a second basic pattern #1 and a second basic pattern #2, and the first indication information indicates the relationship between the first basic pattern #1 and the second basic pattern #1, as well as the relationship between the first basic pattern #2 and the second basic pattern #2.

[0230] In another possible implementation manner, the first indication information indicates the relationship between each first basic pattern and a portion of the second basic patterns.

[0231] For example, the resource pattern of the reference signal includes a first basic pattern #1 and a first basic pattern #2, the reference resource pattern includes a second basic pattern #1 and a second basic pattern #2, and the first indication information indicates the relationship between the first basic pattern #1 and the second basic pattern #1, as well as the relationship between the first basic pattern #2 and the second basic pattern #1.

[0232] Scenario 2: The number of first basic patterns is greater than the number of second basic patterns.

[0233] In a possible implementation manner, the first indication information indicates the relationship between each first basic pattern and part or all of the second basic patterns.

[0234] For example, the resource pattern of the reference signal includes the first basic pattern #1, the first basic pattern #2, and the first basic pattern #3, the reference resource pattern includes the second basic pattern #1 and the second basic pattern #2, and the first indication information indicates the relationship between each basic pattern (i.e., the first basic pattern #1, the first basic pattern #2, the first basic pattern #3) and the second basic pattern #1; or, the first indication information indicates the relationship between the first basic pattern #1 and the second basic pattern #1, the relationship between the first basic pattern #2 and the second basic pattern #1, and the relationship between the first basic pattern #3 and the second basic pattern #2.

[0235] Scenario 3: The number of first basic patterns is less than the number of second basic patterns.

[0236] In a possible implementation manner, the first indication information indicates the relationship between each first basic pattern and a portion of the second basic patterns.

[0237] For example, the resource pattern of the reference signal includes the first basic pattern #1 and the first basic pattern #2, the reference resource pattern includes the second basic pattern #1, the second basic pattern #2, and the second basic pattern #3, and the first indication information indicates the relationship between each basic pattern (i.e., the first basic pattern #1 and the first basic pattern #2) and the second basic pattern #1; or, the first indication information indicates the relationship between the first basic pattern #1 and the second basic pattern #1, and the relationship between the first basic pattern #2 and the second basic pattern #2.

[0238] The basic pattern and the reference resource pattern are respectively introduced above. The following introduces the relevant scheme of the first indication information.

[0239] Aspect 3: Related solutions for the first indication information

[0240] Optionally, the first indication information includes first information indicating a relationship between the first basic pattern and the reference resource pattern, including: the first information indicating whether the first basic pattern has been updated relative to the reference resource pattern. Further, optionally, the first information indicates that the first basic pattern has been updated relative to the reference resource pattern, and the first indication information also includes second information indicating the first basic pattern.

[0241] Based on the above technical solution, the indication of the resource pattern of the reference signal can be implemented through two-level signaling (i.e., first information and second information). Specifically, the first-level signaling (i.e., first information) indicates whether the basic pattern (i.e., first basic pattern) has been updated relative to the reference resource pattern; if the basic pattern has been updated relative to the reference resource pattern, the second-level signaling (i.e., second information) indicates the basic pattern, such as configuration information indicating the basic pattern, or parameters indicating the update of the basic pattern relative to the reference resource pattern. In this way, the signaling overhead caused by indicating the resource pattern of the reference signal can be reduced.

[0242] For example, the first indication information is carried in any of the following signaling: control signaling on a control channel (such as downlink control information (DCI)), media access control-control element (MAC-CE), or radio resource control (RRC). As an example, the first indication information can be port-level, port group-level, device-level, cell-level, etc., without limitation.

[0243] As described above, in some cases, the first indication information includes first information and second information. It is understood that this application does not limit the first information and second information to being transmitted through the same signaling. For example, the first information and second information can be transmitted through different signalings; for another example, the first information and second information can be transmitted through the same signaling, such as different fields of the same signaling.

[0244] Whether the first basic pattern is updated relative to the reference resource pattern may indicate whether the configuration information of the first basic pattern is the same as the configuration information of the reference resource pattern.

[0245] For example, whether the first basic pattern is updated relative to the reference resource pattern indicates whether the reference signal resource information of the first basic pattern is the same as the reference signal resource information of the reference resource pattern. If the reference signal resource information of the first basic pattern is the same as the reference signal resource information of the reference resource pattern, then the first basic pattern has not been updated relative to the reference resource pattern. If the reference signal resource information of the first basic pattern is different from the reference signal resource information of the reference resource pattern (e.g., at least one of the total number of reference signal resources, the resource density of the reference signal resources, the starting position of the reference signal resources, and the ending position of the reference signal resources is different), then the first basic pattern has been updated relative to the reference resource pattern.

[0246] The first information and the second information are described in detail below. For the convenience of distinction and description, the first information is represented by signaling #1 and the second information is represented by signaling #2.

[0247] 1. Signaling #1 (i.e., first message)

[0248] As an example, signaling #1 includes the following schemes.

[0249] Solution A: Signaling #1 indicates whether the first basic pattern is updated compared to the reference resource pattern.

[0250] Specifically, signaling #1 indicates that the first basic pattern is updated compared to the reference resource pattern, or that the first basic pattern is not updated.

[0251] Optionally, signaling #1 is implemented using one or more bits. For example, signaling #1 is implemented using one bit. For example, if the value of the bit is "1," it indicates that the first basic pattern is not updated relative to the reference resource pattern; if the value of the bit is "0," it indicates that the first basic pattern is updated relative to the reference resource pattern.

[0252] For the case of multiple first basic patterns, the following implementation methods may be included.

[0253] In a first possible implementation manner, a signaling #1 indicates whether multiple first basic patterns are updated relative to a reference resource pattern.

[0254] For example, the signaling #1 may be implemented using multiple bits.

[0255] For example, signaling #1 may be implemented via a multi-bit bitmap. Assuming the resource pattern of the reference signal includes N first basic patterns, an N-bit bitmap (i.e., signaling #1) may be used to indicate whether the N first basic patterns are updated relative to the reference resource pattern, where N is an integer greater than 1.

[0256] For example, assuming N = 5, the five first basic patterns are: first basic pattern #1, first basic pattern #2, first basic pattern #3, first basic pattern #4, and first basic pattern #5, and assuming that a bit value of "1" indicates no update, and a bit value of "0" indicates an update. For example, if the value of the 5-bit bitmap is "10010," it indicates that the first basic pattern #1 and the first basic pattern #4 are not updated relative to the reference resource pattern, while the first basic pattern #2, the first basic pattern #3, and the first basic pattern #5 are updated relative to the reference resource pattern. For another example, if the value of the 5-bit bitmap is "01110," it indicates that the first basic pattern #1 and the first basic pattern #5 are updated relative to the reference resource pattern, while the first basic pattern #2, the first basic pattern #3, and the first basic pattern #4 are not updated relative to the reference resource pattern. The correspondence between each bit in the bitmap and the first basic pattern can be pre-agreed, pre-defined, or pre-configured, and is not limited thereto.

[0257] In a second possible implementation manner, a signaling #1 indicates whether a first basic pattern is updated relative to a reference resource pattern.

[0258] For example, assuming there are N first basic patterns, N signaling #1s may be used to indicate whether the N first basic patterns are updated relative to the reference resource pattern.

[0259] It will be appreciated that the above two implementations are illustrative and not limiting. For example, assuming there are two signaling #1s, one signaling #1 indicates whether a portion of the first basic pattern has been updated relative to the reference resource pattern, and the other signaling #1 indicates whether the remaining portion of the first basic pattern has been updated relative to the reference resource pattern. For another example, assuming there are three signaling #1s, one signaling #1 indicates whether a portion of the first basic pattern has been updated relative to the reference resource pattern, another signaling #1 indicates whether another portion of the first basic pattern has been updated relative to the reference resource pattern, and another indicates whether the remaining portion of the first basic pattern has been updated relative to the reference resource pattern.

[0260] Solution B: Signaling #1 indicates whether various parameters in the first basic pattern are updated relative to the reference resource pattern.

[0261] Specifically, signaling #1 indicates that compared with the reference resource pattern, a certain parameter in the first basic pattern is not updated, and / or a certain parameter in the first basic pattern is updated.

[0262] For example, the configuration information of the first basic pattern and the reference resource pattern both include configuration information of M parameters, where M is an integer greater than 1 or equal to 1. Signaling #1 can indicate which parameters in the first basic pattern have been updated relative to the M parameters in the reference resource pattern.

[0263] Optionally, signaling #1 is implemented using one or more bits. For example, signaling #1 is implemented using an M-bit bitmap. Assume that a bit value of "1" indicates no update occurs, and a bit value of "0" indicates an update occurs.

[0264] For example, assuming M = 3, the three parameters are parameter #1, parameter #2, and parameter #3, and assuming that a bit value of "1" indicates no update, and a bit value of "0" indicates an update. For example, if the value of the 3-bit bitmap is "100," it indicates that parameter #1 in the first basic pattern has not been updated relative to parameter #1 in the reference resource pattern, parameter #2 in the first basic pattern has been updated relative to parameter #2 in the reference resource pattern, and parameter #3 in the first basic pattern has been updated relative to parameter #3 in the reference resource pattern. For another example, if the value of the 3-bit bitmap is "110," it indicates that parameter #1 in the first basic pattern has not been updated relative to parameter #1 in the reference resource pattern, parameter #2 in the first basic pattern has not been updated relative to parameter #2 in the reference resource pattern, and parameter #3 in the first basic pattern has been updated relative to parameter #3 in the reference resource pattern. The correspondence between each bit in the bitmap and each parameter can be pre-agreed, pre-defined, or pre-configured, and is not limited thereto.

[0265] Similarly, for the case of multiple first basic patterns, reference may be made to the implementation method in solution A, which will not be described in detail here.

[0266] Solution C: Signaling #1 indicates whether the first basic pattern is updated compared to the reference resource pattern, and if updated, indicates which parameters in the first basic pattern are updated relative to the reference resource pattern.

[0267] Solution C can be understood as a combination of Solution A and Solution B. As an example, in Solution C, signaling #1 may include two pieces of information, such as information #11 and information #12. Information #11 indicates whether the first basic pattern has been updated compared to the reference resource pattern, and information #12 indicates which parameters in the first basic pattern have been updated. Information #11 and information #12 may be carried in the same signaling or in different signalings, without limitation.

[0268] For Plan C, please refer to the description of Plan A and Plan B, which will not be repeated here.

[0269] 2. Signaling #2 (i.e., second information)

[0270] As an example, signaling #2 includes the following schemes.

[0271] Solution a: Signaling #2 indicates configuration information of the first basic pattern.

[0272] Specifically, if signaling #1 indicates that the first basic pattern has been updated relative to the reference resource pattern, signaling #2 indicates the configuration information of the first basic pattern. Based on this approach, if the first basic pattern has been updated relative to the reference resource pattern, signaling #2 indicates the configuration information of the first basic pattern. Conversely, if the first basic pattern has not been updated relative to the reference resource pattern, the configuration information of the first basic pattern need not be indicated, thereby saving signaling overhead. As an example, if the first basic pattern has not been updated relative to the reference resource pattern, it is sufficient to notify that the first basic pattern is the same as the reference resource pattern. In this way, the first device can determine that the reference resource pattern is the first basic pattern.

[0273] Solution b: Signaling #2 indicates updated parameters in the configuration information of the first basic pattern.

[0274] Specifically, if signaling #1 indicates that one or more parameters (referred to as first parameters for distinction) in the first basic pattern are updated relative to the reference resource pattern, signaling #2 may be used to indicate the first parameters in the configuration information of the first basic pattern. Based on this approach, if one or more parameters in the configuration information of the first basic pattern are updated relative to the reference resource pattern, signaling #2 may be used to indicate the one or more parameters in the configuration information of the first basic pattern, and the remaining parameters that have not been updated do not need to be indicated again, thereby saving signaling overhead.

[0275] For example, the configuration information of the first basic pattern and the reference resource pattern includes parameter #1, parameter #2, and parameter #3, and parameter #1 in the configuration information of the first basic pattern is updated relative to parameter #1 in the configuration information of the reference resource pattern, and the remaining parameters (i.e., parameter #2 and parameter #3) are not updated. In this case, signaling #2 only needs to indicate parameter #1 in the configuration information of the first basic pattern, and there is no need to indicate parameter #2 and parameter #3.

[0276] Signaling #1 and signaling #2 are described above respectively. Below, for ease of understanding, several specific examples are given below.

[0277] In the following example, it is assumed that the resource pattern of the reference signal is the pattern of the reference signal in slot j, and the resource pattern of the reference signal includes two first basic patterns, respectively referred to as first basic pattern #1 and first basic pattern #2, that is, the resource pattern of the reference signal is formed by combining the first basic pattern #1 and the first basic pattern #2; the reference resource pattern is the pattern in reference signal slot i, and the reference resource pattern includes two second basic patterns, respectively referred to as second basic pattern #1 and second basic pattern #2, that is, the reference resource pattern is formed by combining the second basic pattern #1 and the second basic pattern #2, i and j are integers greater than or equal to 0, i and j are different, and as an example, j is greater than i (e.g., i=0, j=1). The first indication information indicates the relationship between the first basic pattern and the second basic pattern.

[0278] Example 1

[0279] See Figure 8, which illustrates a schematic diagram of reference resource patterns and basic patterns. As shown in Figure 8, for each basic pattern (e.g., the first basic pattern or the second basic pattern), the reference signal resource information in the basic pattern includes: the total number of resources corresponding to the basic pattern, the total number of reference signal resources, the resource density of the reference signal resources, and the starting position of the reference signal resources. As an example, the configuration information for the reference resource pattern is shown in Table 1.

[0280] Table 1

[0281] As can be seen from Figure 8, the reference signal resource pattern (i.e., the reference signal pattern in slot j) is different from the reference resource pattern (i.e., the reference signal pattern in slot i), meaning the reference signal resource pattern has been updated relative to the reference resource pattern. Specifically, the first basic pattern #1 is different from the second basic pattern #1, while the first basic pattern #2 is the same as the second basic pattern #2. This means that the first basic pattern #1 in the reference signal resource pattern has been updated relative to the second basic pattern #1 in the reference resource pattern, and therefore, the first basic pattern #1 needs to be indicated.

[0282] In the first possible implementation, signaling #1 adopts solution C, and signaling #2 adopts solution b. It is assumed that a bit value of "1" indicates no update occurs, and a bit value of "0" indicates an update occurs. The contents of signaling #1 and signaling #2 are shown in Table 2.

[0283] Table 2

[0284] Taking Table 2 as an example, specifically, based on signaling #1, it can be known that the first basic pattern #1 is updated, that is, the first basic pattern is updated relative to the second basic pattern #1, and specifically the following parameter: the starting position of the reference signal resource is updated, so the updated parameter can be indicated by signaling #2, that is, the starting position of the reference signal resource in the first basic pattern #1 is indicated by signaling #2.

[0285] Table 2 is an example and is not intended to be limiting. For example, the first-level signaling may further include information (e.g., information #13), where information #13 indicates the time domain resource where the reference resource pattern is located, e.g., information #13 indicates slot i.

[0286] In the second possible implementation, signaling #1 adopts solution A, and signaling #2 adopts solution a. It is assumed that a bit value of "1" indicates no update occurs, and a bit value of "0" indicates an update occurs. The contents of signaling #1 and signaling #2 are shown in Table 3.

[0287] Table 3

[0288] Taking Table 3 as an example, specifically, based on signaling #1, it can be known that the first basic pattern #1 is updated, that is, the first basic pattern is updated relative to the second basic pattern #1, so the configuration information of the first basic pattern #1 can be indicated by signaling #2.

[0289] Table 3 is an example and is not intended to be limiting. For example, the first-level signaling may further include information (e.g., information #13), where information #13 indicates the time domain resource where the reference resource pattern is located, e.g., information #13 indicates slot i.

[0290] Example 2

[0291] In this example, it can be assumed that the basic patterns (ie, the first basic pattern and the second basic pattern) are obtained through at least one preset pattern.

[0292] See Figure 9, which is a schematic diagram of preset patterns. As shown in Figure 9, three preset patterns can be predefined, preconfigured, or pre-determined, such as preset pattern #1, preset pattern #2, and preset pattern #3. The first basic pattern and the second basic pattern can be derived from one or more preset patterns.

[0293] Assume that for each basic pattern (i.e., the first basic pattern and the second basic pattern), a basic pattern is obtained based on a preset pattern. The reference signal resource information in the basic pattern includes: the total number of resources corresponding to the basic pattern, the index of the preset pattern used to obtain the basic pattern, the offset of the reference signal resource relative to the preset pattern, the offset direction of the reference signal resource relative to the preset pattern, and the resource density change relative to the reference signal resource of the preset pattern. As an example, the configuration information of the reference resource pattern is shown in Table 4.

[0294] Table 4

[0295] The resource density change is 1, which indicates that the resource density has not changed, that is, the resource density changes of the preset pattern and the basic pattern obtained based on the preset pattern are the same.

[0296] As can be seen from Figure 8, the reference signal resource pattern (i.e., the reference signal pattern in slot j) is different from the reference resource pattern (i.e., the reference signal pattern in slot i), meaning the reference signal resource pattern has been updated relative to the reference resource pattern. Specifically, the first basic pattern #1 is different from the second basic pattern #1, while the first basic pattern #2 is the same as the second basic pattern #2. This means that the first basic pattern #1 in the reference signal resource pattern has been updated relative to the second basic pattern #1 in the reference resource pattern, and therefore, the first basic pattern #1 needs to be indicated.

[0297] In the first possible implementation, signaling #1 adopts solution C, and signaling #2 adopts solution b. It is assumed that a bit value of "1" indicates no update occurs, and a bit value of "0" indicates an update occurs. The contents of signaling #1 and signaling #2 are shown in Table 5.

[0298] Table 5

[0299] Taking Table 5 as an example, specifically, based on signaling #1, it can be seen that the first basic pattern #1 has been updated, meaning that the first basic pattern #1 has been updated relative to the second basic pattern #1. Specifically, the preset pattern used to obtain the first basic pattern #1 and the preset pattern used to obtain the second basic pattern #1 are the same, namely, both are preset pattern #1. The offset and offset direction of the reference signal resources in the first basic pattern #1 relative to preset pattern #1 are different from the offset and offset direction of the reference signal resources in the second basic pattern #1, meaning that the offset and offset direction of the reference signal resources in the first basic pattern #1 relative to the second basic pattern #1 have been updated. Therefore, signaling #2 can be used to indicate the offset and offset direction of the reference signal resources in the first basic pattern #1 relative to preset pattern #1. Assuming "+" indicates an upward offset and "-" indicates a downward offset, the offset and offset direction of the reference signal resources in the first basic pattern #1 relative to preset pattern #1 is +3.

[0300] Table 5 is an example and is not intended to be limiting. For example, the first-level signaling may further include information (e.g., information #13), where information #13 indicates the time domain resource where the reference resource pattern is located, e.g., information #13 indicates slot i.

[0301] In the second possible implementation, signaling #1 adopts scheme A, and signaling #2 adopts scheme a. It is assumed that a bit value of "1" indicates no update occurs, and a bit value of "0" indicates an update occurs. The contents of signaling #1 and signaling #2 are shown in Table 6.

[0302] Table 6

[0303] Taking Table 6 as an example, specifically, based on signaling #1, it can be known that the first basic pattern #1 is updated, that is, the first basic pattern is updated relative to the second basic pattern #1, so the configuration information of the first basic pattern #1 can be indicated by signaling #2.

[0304] Table 6 is an example and is not intended to be limiting. For example, the first-level signaling may further include information (e.g., information #13), where information #13 indicates the time domain resource where the reference resource pattern is located, e.g., information #13 indicates slot i.

[0305] It can be understood that in the above examples 1 and 2, the starting position of the basic pattern is mainly represented by the offset of the starting point relative to the reference point (i.e., Δt1, Δf1, Δp1), which is used as an example for illustrative explanation. The embodiments of the present application are not limited to this. Any scheme that can identify the starting position of the basic pattern is applicable to the embodiments of the present application. For example, the starting position of the basic pattern is represented by the index (or identifier) ​​of the starting point, such as the starting position of the basic pattern can also be expressed as (T1, F1, P1), where T1 represents the starting point of the basic pattern in the time domain, F1 represents the starting point of the basic pattern in the frequency domain, and P1 represents the starting point of the basic pattern in the spatial domain.

[0306] The above describes the relevant solutions regarding the first indication information.

[0307] Optionally, the method 200 further includes: the first device receiving second indication information, where the second indication information indicates at least one bandwidth resource, and the at least one bandwidth resource is associated with a resource pattern of a reference signal.

[0308] At least one bandwidth resource is associated with a resource pattern of a reference signal, which may indicate that the resource pattern of the reference signal can be used on at least one bandwidth resource, or in other words, the resource pattern of the reference signal indicates the position distribution of the reference signal on the at least one bandwidth resource.

[0309] For example, at least one bandwidth resource is a group of bandwidth resources within a BWP, a bandwidth resource is a portion of bandwidth resources within a BWP, and a bandwidth resource may also be referred to as a sub-BWP or a unit BWP. The resources of a BWP may include the at least one bandwidth resource. Based on this, if a BWP is divided into the at least one bandwidth resource, the resource pattern of the reference signal within the BWP can be determined using the resource pattern of the reference signal associated with the at least one bandwidth resource.

[0310] For example, the number of bandwidth resources included in the BWP satisfies Equation 1. The number of at least one bandwidth resource (ie, the number of bandwidth resources associated with the resource pattern of the reference signal) is less than or equal to the number of bandwidth resources included in the BWP.

[0311] Among them, N UnitBWP Indicates the number of bandwidth resources contained in the BWP. The size of the i-th BWP configured for the first device may be represented by the frequency domain resources (such as the number of RBs) included in the bandwidth resources. Indicates the number of the starting frequency domain resource (such as the starting RB) of the i-th BWP configured for the first device. mod indicates a modulo operation. Indicates rounding up. P represents the size of a bandwidth resource, which can be represented by the frequency domain resources (such as the number of RBs) contained in the bandwidth resource. P is an integer greater than or equal to 1. UnitBWP The size of the first and last bandwidth resources in a bandwidth resource are affected by the starting and ending positions of the BWP. Therefore, the size of the first and last bandwidth resources may not be P. The size of the bandwidth resources between the first and last bandwidth resources is P.

[0312] As an example, in the i-th bandwidth resource, the size of the first bandwidth resource may satisfy Equation 2.

[0313] in, Indicates the size of the first bandwidth resource.

[0314] As an example, in In the case of , the size of the last bandwidth resource satisfies Equation 3.

[0315] in, Indicates the size of the last bandwidth resource.

[0316] In addition, In this case, the size of the last bandwidth resource is also P.

[0317] The above description of bandwidth resources is for illustration only and is not intended to be limiting.

[0318] The following takes two bandwidth resources (ie, at least one bandwidth resource includes a first bandwidth resource and a second bandwidth resource) as an example to introduce the association between the two bandwidth resources and the resource pattern of the reference signal.

[0319] Optionally, two bandwidth resources are associated with a resource pattern of a reference signal, which may indicate that the resource pattern of the reference signal can be used on the first bandwidth resource and also on the second bandwidth resource; or, it may indicate that the first information corresponding to the second bandwidth resource is the same as the first information corresponding to the first bandwidth resource; or, it may indicate that the relationship between the first basic pattern corresponding to the second bandwidth resource and the reference resource pattern is the same as the relationship between the first basic pattern corresponding to the first bandwidth resource and the reference resource pattern.

[0320] See Figure 10, which is a schematic diagram illustrating the association between bandwidth resources and reference signal resource patterns. As shown in Figure 10, it is assumed that BWP resources are divided into sub-BWP#1, sub-BWP#2, sub-BWP#3, and sub-BWP#4.

[0321] A possible scenario, as shown in (a) in Figure 10, assuming that the resource patterns of the reference signal on sub-BWP#3 and sub-BWP#4 are the same, the second device can send three first indication information to the first device, such as first indication information #1, first indication information #2, and first indication information #3, wherein the first indication information #1 is used to determine the resource pattern of the reference signal on sub-BWP#1, the first indication information #2 is used to determine the resource pattern of the reference signal on sub-BWP#2, and the first indication information #3 is used to determine the resource pattern of the reference signal on sub-BWP#3 and BWP#4. That is, for the resource pattern of the reference signal on sub-BWP#3 and sub-BWP#4, it may correspond to a first indication information (i.e., first indication information #3), that is, the resource pattern of the reference signal used to determine by the first indication information is the resource pattern of the reference signal on sub-BWP#3 and sub-BWP#4; or for the resource pattern of the reference signal on sub-BWP#3 and sub-BWP#4, it may correspond to a first information, that is, whether the first basic pattern indicated by the first information is updated relative to the reference resource pattern, which can be applicable to sub-BWP#3 and sub-BWP#4.

[0322] Another possible scenario, as shown in (b) in Figure 10, assuming that the resource patterns of the reference signal on sub-BWP#3 and sub-BWP#4 are different, the second device can send four first indication information to the first device, such as first indication information #1, first indication information #2, first indication information #3, and first indication information #4, wherein the first indication information #1 is used to determine the resource pattern of the reference signal on sub-BWP#1, the first indication information #2 is used to determine the resource pattern of the reference signal on sub-BWP#2, the first indication information #3 is used to determine the resource pattern of the reference signal on sub-BWP#3, and the first indication information #4 is used to determine the resource pattern of the reference signal on BWP#4.

[0323] It is understood that the first device can determine the first indication information corresponding to the BWP based on the first indication information corresponding to sub-BWP#1, the first indication information corresponding to sub-BWP#2, the first indication information corresponding to sub-BWP#3, and the first indication information corresponding to sub-BWP#4. For ease of description, if the first indication information is used to determine the resource pattern of the reference signal on the BWP, the first indication information is referred to as the first indication information corresponding to the BWP.

[0324] The above description is provided as an example and is not intended to be limiting. For example, if the reference signal resource patterns on sub-BWP#3 and BWP#4 are the same, they can be indicated separately using two pieces of first indication information. Furthermore, the above description primarily uses frequency domain resources as an example and is not intended to be limiting. The above description also applies to time domain resources or spatial domain resources, and will not be further elaborated here.

[0325] As described above, the first device may also recommend a reference signal resource pattern to the second device, and this solution is described in detail below in conjunction with Figure 11. It is understood that method 1100 and method 200 described below may be used in combination or separately, and this is not limited.

[0326] Referring to Figure 11, Figure 11 is a schematic diagram of a signal transmission method 1100 provided in an embodiment of the present application. The method 1100 shown in Figure 11 may include the following steps.

[0327] 1101. A first device sends third indication information, where the third indication information is used to determine a first resource pattern of a reference signal, where the first resource pattern of the reference signal includes at least one third basic pattern, and the third indication information indicates a relationship between the third basic pattern and the first reference resource pattern.

[0328] Correspondingly, the second device receives the third indication information.

[0329] For example, the first device can perceive the communication environment and channel information by itself to determine the resource pattern of the reference signal, or it can determine the resource pattern of the reference signal through historical channel information and communication conditions, etc., to determine the resource pattern of the reference signal and indicate the resource pattern to the second device.

[0330] In an embodiment of the present application, for the purpose of distinction, the resource pattern of the reference signal recommended (or suggested, or expected) by the first device is recorded as the first resource pattern of the reference signal, and the resource pattern of the reference signal indicated by the second device to the first device is recorded as the second resource pattern of the reference signal.

[0331] The specific implementation of the third indication information may refer to the specific implementation of the first indication information in method 200, which will not be described in detail here.

[0332] In the embodiments of the present application, for the sake of distinction, the basic pattern in the first resource pattern of the reference signal is referred to as the third basic pattern, and the reference resource pattern used for comparison with the third basic pattern is referred to as the first reference resource pattern. For the third basic pattern, reference may be made to the description of the first basic pattern in method 200, and for the first reference resource pattern, reference may be made to the description of the reference resource pattern in method 200, which are not further described here.

[0333] 1102. Based on a response to the third indication information, the first device receives or sends a reference signal.

[0334] Regarding the first device receiving or sending the reference signal, reference may be made to the relevant description in step 202 and will not be repeated here.

[0335] The following describes two scenarios.

[0336] In scenario 1, the second resource pattern of the reference signal is the same as the first resource pattern of the reference signal.

[0337] In this scenario, the following implementation methods can be included.

[0338] In one possible implementation, if the second device determines that the second resource pattern of the reference signal is the same as the first resource pattern of the reference signal, the second device sends a confirmation message to the first device. The confirmation message is used to notify the first device that the second device agrees with the resource pattern recommended by the first device, that is, the resource pattern of the reference signal is the first resource pattern. As an example, the confirmation message can be implemented using at least one bit. For example, the confirmation message is implemented using one bit. If the bit is set to "0", it indicates that the second device agrees with the resource pattern recommended by the first device; if the bit is set to "1", it indicates that the second device disagrees with the resource pattern recommended by the first device.

[0339] Based on this implementation, in step 1102, receiving or sending a reference signal based on a response to the third indication information includes: based on the notification information, the first device uses a first resource pattern of the reference signal to receive or send the reference signal.

[0340] Another possible implementation is that if the second device determines that the second resource pattern of the reference signal is the same as the first resource pattern of the reference signal, the second device does not send information to the first device. Accordingly, if the first device does not receive information (such as rejection information) from the second device within a period of time (such as time period #1), the first device assumes that the second device agrees with the resource pattern recommended by the first device, that is, the resource pattern of the reference signal is the first resource pattern. The starting moment of time period #1 can be the moment when the first device sends the third indication information, and the duration of time period #1 can be predefined, preconfigured, or pre-agreed. As an example, time period #1 can also be implemented by a timer, such as starting the timer after the first device sends the third indication information, and the running length of the timer is the length of time period #1. Specifically, if the first device does not receive a message from the second device during the operation of the timer, the resource pattern of the reference signal is assumed to be the first resource pattern; if the first device receives a message from the second device during the operation of the timer, the pattern of the reference signal is assumed not to be the first resource pattern.

[0341] Based on this implementation, in step 1102, based on a response to the third indication information, receiving or sending a reference signal includes: if the first device does not receive a message from the second device, the first device uses a first resource pattern of the reference signal to receive or send the reference signal.

[0342] In scenario 2, the second resource pattern of the reference signal is different from the first resource pattern of the reference signal.

[0343] In this scenario, the following implementation methods can be included.

[0344] In one possible implementation, method 1100 further includes: the second device may send first indication information to the first device, where the first indication information is used to determine a resource pattern of a reference signal (i.e., a second resource pattern), where the second resource pattern includes at least one first basic pattern, and the first indication information indicates a relationship between the first basic pattern and the second reference resource pattern, where the second reference resource pattern is the first resource pattern of the reference signal or at least one third basic pattern. In the embodiments of the present application, for distinction, the reference resource pattern used for comparison with the first basic pattern is referred to as the second reference resource pattern.

[0345] For example, the second device adjusts the first resource pattern to obtain the second resource pattern. Therefore, the second device may send first indication information to the first device. The first indication information indicates a relationship between the first basic pattern and the first resource pattern or the third basic pattern. In this way, the first device may determine the first basic pattern based on the first resource pattern and the relationship, and then determine the second resource pattern. For details about this method, please refer to the description of method 200 and will not be repeated here.

[0346] Based on this implementation, in step 1102, receiving or sending a reference signal based on a response to the third indication information includes: the first device receiving or sending a reference signal based on the first indication information.

[0347] In another possible implementation, method 1100 further includes: the second device may send first indication information to the first device, the first indication information being used to determine a resource pattern of a reference signal (i.e., a second resource pattern), the second resource pattern including at least one first basic pattern, the first indication information indicating a relationship between the first basic pattern and the second reference resource pattern, wherein the second reference resource pattern is a pattern of a reference signal on a certain resource (such as a certain time domain unit, a certain frequency domain unit, a certain spatial domain unit), or the second reference resource pattern is a predefined or preconfigured pattern. For this method, reference may be made to the description in method 200, which will not be repeated here.

[0348] Based on this implementation, in step 1102, receiving or sending a reference signal based on a response to the third indication information includes: the first device receiving or sending a reference signal based on the first indication information.

[0349] The above describes the relevant scheme for the resource pattern of the reference signal recommended by the first device in combination with method 1100. It can be understood that method 1100 and method 200 can be used in combination or separately, and there is no limitation on this. Taking the combination of method 1100 and method 200 as an example, before executing step 201, step 1101 is first executed. Specifically, the first device sends a third indication information to the second device. If the resource pattern of the reference signal determined by the second device (i.e., the second resource pattern) is different from the resource pattern of the reference signal indicated by the first device through the third indication information (i.e., the first resource pattern), the second device sends the first indication information to the first device, and then the first device receives or sends the reference signal based on the first indication information.

[0350] For ease of understanding, the following uses the first device as a terminal device, the second device as a network device, the first information as signaling #1, and the second information as signaling #2 as an example, and provides an exemplary description in conjunction with possible forms of reference signals. For details not described below, reference can be made to the descriptions of methods 200 and 1100 and are not further elaborated below.

[0351] Referring to Figure 12 , Figure 12 is a schematic flowchart of a signal transmission method 1200 according to an embodiment of the present application. Method 1200 may be applicable to method 200. In method 1200, it is assumed that the reference signal is a downlink reference signal (e.g., a CSI-RS or a DMRS). Method 1200 shown in Figure 12 may include the following steps.

[0352] 1201. A network device determines a resource pattern of a downlink reference signal, where the resource pattern of the downlink reference signal includes N first basic patterns.

[0353] Wherein, N is an integer greater than 1. The resource pattern of the downlink reference signal includes N first basic patterns, that is, the resource pattern of the downlink reference signal is formed by combining the N first basic patterns.

[0354] 1202. The network device sends signaling #1 to the terminal device. The signaling #1 indicates whether N first basic patterns are updated relative to the reference resource pattern.

[0355] Specifically, the signaling #1 may indicate whether the configuration information of each of the N first basic patterns is updated relative to the reference resource pattern.

[0356] Optionally, signaling #1 indicates whether N first basic patterns are updated relative to the reference resource pattern, including the following implementations.

[0357] In a possible implementation, the network device sends a signaling #1 to the terminal device, where the signaling #1 indicates whether N first basic patterns are updated relative to the reference resource pattern.

[0358] In another possible implementation, the network device sends N signaling #1s to the terminal device, wherein the N signaling #1s indicate whether N first basic patterns are updated relative to the reference resource pattern. Specifically, each signaling #1 indicates whether a first basic pattern is updated relative to the reference resource pattern.

[0359] In another possible implementation, the network device sends X signaling #1s to the terminal device, where the X signaling #1s indicate whether N first basic patterns are updated relative to the reference resource pattern, where X is an integer greater than 1 and less than N. Taking X=2 as an example, one signaling #1 indicates whether some of the N first basic patterns are updated relative to the reference resource pattern, and another signaling #1 indicates whether the remaining first basic patterns of the N first basic patterns are updated relative to the reference resource pattern.

[0360] Regarding signaling #1, please refer to the relevant description in method 200, which will not be repeated here.

[0361] Optionally, the reference resource pattern includes at least one second basic pattern. Signaling #1 indicates whether the N first basic patterns are updated relative to the reference resource pattern, which may be: Signaling #1 indicates whether the first basic pattern is updated relative to the second basic pattern. For reference resource patterns, please refer to the relevant description in method 200 and will not be repeated here.

[0362] 1203. The network device sends signaling #2 to the terminal device. The signaling #2 indicates the first basic pattern #1. The first basic pattern #1 is updated relative to the reference resource pattern.

[0363] If a first basic pattern (such as first basic pattern #1) among the N first basic patterns is updated relative to the reference resource pattern, the network device sends signaling #2 to the terminal device, indicating the first basic pattern through signaling #2. Correspondingly, if none of the N first basic patterns are updated relative to the reference resource pattern, the network device may not send signaling #2 to the terminal device. For ease of explanation, Figure 12 mainly uses the example of the update of the first basic pattern #1 among the N first basic patterns relative to the reference resource pattern as an example. It should be understood that the embodiments of the present application are not limited to this.

[0364] Optionally, signaling #2 indicates the first basic pattern #1, including the following implementations.

[0365] In a first possible implementation, signaling #2 indicates configuration information of the first basic pattern #1. Specifically, if signaling #1 indicates that the first basic pattern #1 is updated relative to the reference resource pattern, the configuration information of the first basic pattern #1 is indicated via signaling #2.

[0366] In a second possible implementation, signaling #2 indicates updated parameters in the first basic pattern #1. Specifically, if signaling #1 indicates that one or more parameters in the first basic pattern #1 are updated relative to the reference resource pattern, signaling #2 may be used to indicate the one or more parameters in the configuration information of the first basic pattern #1. Other parameters that have not been updated do not need to be indicated, thereby saving signaling overhead.

[0367] Regarding signaling #2, please refer to the relevant description of signaling #2 in method 200, which will not be repeated here.

[0368] 1204. The terminal device determines configuration information of N first basic patterns based on signaling #1 and signaling #2.

[0369] 1205. The terminal device determines the resource pattern of the downlink reference signal according to the configuration information of the N first basic patterns.

[0370] 1206. The network device sends a downlink reference signal to the terminal device.

[0371] 1207. The terminal device performs channel estimation based on the resource pattern of the downlink reference signal.

[0372] Specifically, the terminal device receives a downlink reference signal according to a resource pattern of the downlink reference signal, and performs channel estimation based on the received downlink reference signal.

[0373] Based on the above technical solution, the network equipment can indicate whether the N first basic patterns in the resource pattern of the downlink reference signal are updated relative to the reference resource pattern, as well as the information of the updated first basic pattern through two-level signaling, namely signaling #1 and signaling #2. In this way, flexible indication of the resource pattern of the downlink reference signal (such as the resource pattern of the sparse downlink reference signal) can be achieved, and the signaling overhead brought by indicating the resource pattern of the downlink reference signal can be reduced.

[0374] Referring to FIG13 , FIG13 is a schematic flow chart of a method 1300 according to another embodiment of the present application. Method 1300 may be applicable to method 1100. In method 1300 , it is assumed that the reference signal is a downlink reference signal. Method 1300 shown in FIG13 may include the following steps.

[0375] 1301. The terminal device determines a first resource pattern of a downlink reference signal, where the first resource pattern of the downlink reference signal includes N1 third basic patterns.

[0376] Wherein, N1 is an integer greater than 1.

[0377] Step 1301 may refer to step 1101 and will not be repeated here.

[0378] 1302. The terminal device sends signaling #3 to the network device. Signaling #3 indicates whether N1 third basic patterns are updated relative to the first reference resource pattern.

[0379] Signaling #3 may refer to signaling #1 in method 200 .

[0380] 1303. The terminal device sends signaling #4 to the network device. The signaling #4 indicates the third basic pattern #1. The third basic pattern #1 is updated relative to the first reference resource pattern.

[0381] Signaling #4 may refer to signaling #2 in method 200.

[0382] Steps 1302-1303 are similar to steps 1202-1203, except that, in steps 1202-1203, the network device indicates the resource pattern of the downlink reference signal to the terminal device (i.e., via signaling #1 and signaling #2), while in steps 1302-1303, the terminal device indicates the resource pattern of the downlink reference signal to the network device (i.e., via signaling #3 and signaling #4). Furthermore, for differentiation, the reference resource pattern used for comparison with the third basic pattern is referred to as the first reference resource pattern.

[0383] 1304, the network device determines a second resource pattern of the downlink reference signal based on the first resource pattern of the downlink reference signal

[0384] The second resource pattern of the downlink reference signal is the resource pattern of the downlink reference signal configured by the network device for the terminal device.

[0385] The second resource pattern of the downlink reference signal includes N2 first basic patterns, where N2 is an integer greater than 1. N2 and N1 may be the same or different, and are not limited thereto.

[0386] In one possible scenario, the second resource pattern of the downlink reference signal is the same as the first resource pattern of the downlink reference signal. For this scenario, reference may be made to Scenario 1 in Method 1100 and will not be repeated here. Furthermore, in Scenario 1, Method 1300 may further include Steps 1309-1310.

[0387] In another possible scenario, the second resource pattern of the downlink reference signal is different from the first resource pattern of the downlink reference signal. In this scenario, the network device can indicate the second resource pattern of the downlink reference signal to the terminal device. Optionally, in this scenario, method 1300 also includes steps 1305-1308.

[0388] 1305. The network device sends signaling #1 to the terminal device. Signaling #1 indicates whether the N2 first basic patterns are updated relative to the second reference resource pattern.

[0389] 1306. The network device sends signaling #2 to the terminal device. The signaling #2 indicates the first basic pattern #1. The first basic pattern #1 is updated relative to the second reference resource pattern.

[0390] Steps 1302-1303 are similar to steps 1202-1203, except that, in method 1300, as a possible implementation, the second reference resource pattern in step 1305 can also be the first resource pattern of the downlink reference signal, or any one or more third basic patterns of N1 third basic patterns.

[0391] 1307. The terminal device determines the configuration information of N2 first basic patterns based on signaling #1 and signaling #2.

[0392] 1308. The terminal device determines the resource pattern of the downlink reference signal according to the configuration information of the N2 first basic patterns.

[0393] Among them, the resource pattern of the downlink reference signal determined by the terminal device is the second resource pattern described above.

[0394] 1309. The network device sends a downlink reference signal to the terminal device.

[0395] For example, if the resource pattern of the downlink reference signal is the first resource pattern, the network device sends the downlink reference signal based on the first resource pattern.

[0396] For another example, if the resource pattern of the downlink reference signal is the second resource pattern, the network device sends the downlink reference signal based on the second resource pattern.

[0397] 1310. The terminal device performs channel estimation based on the resource pattern of the downlink reference signal.

[0398] Specifically, the terminal device receives a downlink reference signal according to a resource pattern of the downlink reference signal, and performs channel estimation based on the received downlink reference signal.

[0399] Based on the above technical solution, the terminal device can recommend a resource pattern for a downlink reference signal to the network device, such as indicating the recommended resource pattern for the downlink reference signal to the network device through two-level signaling (i.e., signaling #3 and signaling #4). In addition, if the resource pattern configured by the network device is different from the resource pattern indicated by the terminal device, the network device can also indicate the resource pattern for the downlink reference signal through two-level signaling (i.e., signaling #1 and signaling #2). This can achieve flexible indication of the resource pattern for the downlink reference signal (such as the resource pattern for a sparse downlink reference signal) and reduce the signaling overhead caused by indicating the resource pattern for the downlink reference signal.

[0400] Referring to Figure 14 , Figure 14 is a schematic flowchart of method 1400 according to another embodiment of the present application. Method 1400 may be applicable to method 200. In method 1400, it is assumed that the reference signal is an uplink reference signal (e.g., SRS, DMRS, etc.). Method 1400 shown in Figure 14 may include the following steps.

[0401] 1401. A network device determines a resource pattern of an uplink reference signal, where the resource pattern of the uplink reference signal includes N first basic patterns.

[0402] 1402. The network device sends signaling #1 to the terminal device. The signaling #1 indicates whether N first basic patterns are updated relative to the reference resource pattern.

[0403] 1403. The network device sends signaling #2 to the terminal device. The signaling #2 indicates the first basic pattern #1. The first basic pattern #1 is updated relative to the reference resource pattern.

[0404] 1404. The terminal device determines configuration information of N first basic patterns based on signaling #1 and signaling #2.

[0405] 1405. The terminal device determines the resource pattern of the uplink reference signal according to the configuration information of the N first basic patterns.

[0406] For steps 1401-1405, reference may be made to steps 1201-1205 in method 1200 and are not described in detail here.

[0407] 1406. The terminal device sends an uplink reference signal according to the resource pattern of the uplink reference signal.

[0408] 1407. The network device performs channel estimation according to the resource pattern of the uplink reference signal.

[0409] Specifically, the network device receives an uplink reference signal according to a resource pattern of the uplink reference signal, and then performs channel estimation according to the uplink reference signal.

[0410] Based on the above technical solution, the network equipment can indicate whether the N first basic patterns in the resource pattern of the uplink reference signal are updated relative to the reference resource pattern, as well as the information of the updated first basic pattern through two-level signaling, namely signaling #1 and signaling #2. In this way, flexible indication of the resource pattern of the uplink reference signal (such as the resource pattern of the sparse uplink reference signal) can be achieved, and the signaling overhead brought by indicating the resource pattern of the uplink reference signal can be reduced.

[0411] Referring to FIG15 , FIG15 is a schematic flow chart of a method 1500 according to another embodiment of the present application. Method 1500 may be applicable to method 1100. In method 1500, it is assumed that the reference signal is an uplink reference signal. Method 1500 shown in FIG15 may include the following steps.

[0412] 1501. The terminal device determines a first resource pattern of an uplink reference signal, where the first resource pattern of the uplink reference signal includes N1 third basic patterns.

[0413] 1502. The terminal device sends signaling #3 to the network device. Signaling #3 indicates whether N1 third basic patterns are updated relative to the first reference resource pattern.

[0414] 1503. The terminal device sends signaling #4 to the network device. The signaling #4 indicates the third basic pattern #1. The third basic pattern #1 is updated relative to the first reference resource pattern.

[0415] 1504. The network device determines a second resource pattern of the uplink reference signal based on the first resource pattern of the uplink reference signal.

[0416] Optionally, method 1500 further includes steps 1505-1508.

[0417] 1505. The network device sends signaling #1 to the terminal device. Signaling #1 indicates whether the N2 first basic patterns are updated relative to the second reference resource pattern.

[0418] 1506. The network device sends signaling #2 to the terminal device. The signaling #2 indicates the first basic pattern #1. The first basic pattern #1 is updated relative to the second reference resource pattern.

[0419] 1507. The terminal device determines the configuration information of N2 first basic patterns based on signaling #1 and signaling #2.

[0420] 1508. The terminal device determines the resource pattern of the uplink reference signal according to the configuration information of the N2 first basic patterns.

[0421] For steps 1501-1508, reference may be made to steps 1301-1308 in method 1300 and are not described in detail here.

[0422] 1509. The terminal device sends an uplink reference signal to the network device.

[0423] 1510. The network device performs channel estimation according to the resource pattern of the uplink reference signal.

[0424] Specifically, the network device receives an uplink reference signal according to a resource pattern of the uplink reference signal, and performs channel estimation based on the received uplink reference signal.

[0425] Method 1500 may refer to method 1300, with the difference being that method 1300 involves a downlink reference signal, while method 1500 involves an uplink reference signal.

[0426] It can be understood that Methods 1200-1500 are mainly illustrated by taking channel estimation based on reference signals as an example. It can be understood that this application does not limit the type, form, and function of the reference signal, and any reference signal is applicable to the embodiments of this application.

[0427] It can also be understood that in the embodiments of the present application, the position distribution of the reference signal on a certain time domain unit (such as a slot) or the position distribution of the reference signal on a certain frequency domain unit is mentioned many times, and those skilled in the art can understand its meaning. For example, taking the position distribution of the reference signal on a certain time domain unit as an example, the position distribution of the reference signal on a certain time domain unit (such as slot 0, and also such as slot 1) can specifically represent the frequency domain resource position distribution of a certain antenna port or a certain antenna port group of the reference signal on the time domain unit, or the frequency domain resource position distribution of a certain antenna port or a certain antenna port group of the reference signal on the time domain unit and a certain frequency domain unit. The position distribution of the reference signal on the frequency domain unit is similar and will not be repeated here. In addition, in some embodiments of the present application, the frequency domain resource position distribution of the reference signal is mainly used as an example for illustration, which is not limited to this. Specifically, the resource pattern of the reference signal can reflect the time-frequency resource position distribution of a certain antenna port or a certain antenna port group of the reference signal on the time domain unit, or the time domain resource position distribution, or the frequency domain resource position distribution. The position distribution of the reference signal on the frequency domain unit is similar and will not be described here in detail.

[0428] It is also understood that in the various embodiments of the present application, the interaction between a terminal device and a network device is mainly used as an example for illustrative description, and the present application is not limited thereto. The terminal device can be replaced by a receiving device, which can be a terminal device or a network device; the network device can be replaced by a sending device, which can be a terminal device or a network device. For example, "terminal device" can be replaced by "first terminal device" and "network device" can be replaced by "second terminal device."

[0429] It can also be understood that some optional features in the various embodiments of the present application may not depend on other features in certain scenarios, and may also be combined with other features in certain scenarios, without limitation.

[0430] It can also be understood that the solutions in the various embodiments of the present application can be reasonably combined and used, and the explanations or descriptions of the various terms appearing in the embodiments can be referenced or explained with each other in the various embodiments, without limitation to this.

[0431] It can also be understood that in the above-mentioned method embodiments, the methods and operations implemented by the terminal device can also be implemented by components that can be formed by the terminal device (such as chips or circuits); in addition, the methods and operations implemented by the network device can also be implemented by components that can be formed by the network device (such as chips or circuits), without limitation.

[0432] The method provided in the embodiments of the present application is described in detail above with reference to Figures 2 to 15 . Below, the apparatus provided in the embodiments of the present application is described in detail with reference to Figures 16 to 18 . It should be understood that the description of the apparatus embodiment corresponds to the description of the method embodiment. Therefore, for matters not described in detail, reference can be made to the method embodiment above, and for the sake of brevity, they will not be repeated here.

[0433] Referring to Figure 16 , Figure 16 is a schematic diagram of a communication device 1600 provided in an embodiment of the present application. Device 1600 includes a transceiver unit 1610. Transceiver unit 1610 can be used to implement corresponding communication functions. Transceiver unit 1610 can also be referred to as a communication interface or a communication unit. Optionally, device 1600 also includes a processing unit 1620. Processing unit 1620 can be used to perform processing, such as determining a resource pattern.

[0434] Optionally, the device 1600 may further include a storage unit, which may be used to store instructions and / or data. The processing unit 1620 may read the instructions and / or data in the storage unit so that the device implements the aforementioned method embodiment.

[0435] In a first possible design, the apparatus 1600 may be the first device in the aforementioned embodiment (such as the first device in Figure 2 or Figure 11, or the terminal device in Figures 12 to 15), and the apparatus 1600 may implement the steps or processes corresponding to those performed by the first device in the above method embodiment. The transceiver unit 1610 may be used to perform transceiver-related operations (such as operations of sending and / or receiving data or messages) of the first device in the above method embodiment, and the processing unit 1620 may be used to perform processing-related operations of the first device in the above method embodiment, or operations other than transceiver operations (such as operations other than sending and / or receiving data or messages).

[0436] In one possible implementation, the transceiver unit 1610 is configured to receive first indication information, where the first indication information is used to determine a resource pattern for a reference signal, where the resource pattern for the reference signal includes at least one first basic pattern, and the first indication information indicates a relationship between the first basic pattern and the reference resource pattern; the transceiver unit 1610 is further configured to receive or send the reference signal based on the first indication information. Optionally, the processing unit 1620 is configured to determine the resource pattern for the reference signal.

[0437] Optionally, the first indication information includes first information, and the first indication information indicates a relationship between the first basic pattern and the reference resource pattern, including: the first information indicates whether the first basic pattern is updated relative to the reference resource pattern.

[0438] Optionally, the first information indicates that the first basic pattern is updated relative to the reference resource pattern, and the first indication information further includes second information, where the second information indicates the first basic pattern.

[0439] Optionally, the first information indicates that a first parameter in the configuration information of the first basic pattern is updated relative to the first parameter in the configuration information of the reference resource pattern, and the second information indicates the first parameter in the configuration information of the first basic pattern.

[0440] Optionally, the reference resource pattern includes at least one second basic pattern, and the first indication information indicates a relationship between the first basic pattern and the reference resource pattern, including: the first indication information indicates a relationship between the first basic pattern and the second basic pattern.

[0441] Optionally, the configuration information of the first basic pattern includes one or more of the following information: the starting position of the first basic pattern, the domain corresponding to the first basic pattern, and the resource of the reference signal indicated by the first basic pattern, wherein the domain corresponding to the first basic pattern is any one of the following: time domain, frequency domain, and spatial domain.

[0442] Optionally, the resources of the reference signal indicated by the first basic pattern include at least one of the following information: the total number of resources corresponding to the first basic pattern, the total number of resources occupied by the reference signal, the resource density of the resources occupied by the reference signal, the starting position of the resources occupied by the reference signal, the ending position of the resources occupied by the reference signal, the index of the preset pattern used to obtain the first basic pattern, the offset of the resources occupied by the reference signal relative to the preset pattern, the offset direction of the resources occupied by the reference signal relative to the preset pattern, and the change in resource density of the resources occupied by the reference signal relative to the preset pattern.

[0443] Optionally, the transceiver unit 1610 is further configured to receive second indication information, where the second indication information indicates at least one bandwidth resource, and the at least one bandwidth resource is associated with a resource pattern of a reference signal.

[0444] Optionally, at least one bandwidth resource includes a first bandwidth resource and a second bandwidth resource, and the resource pattern of the reference signal on the second bandwidth resource is the same as the resource pattern of the reference signal on the first bandwidth resource; or, the first indication information includes first information, the first information indicates whether the first basic pattern is updated relative to the reference resource pattern, and the first information corresponding to the second bandwidth resource is the same as the first information corresponding to the first bandwidth resource; or, the relationship between the first basic pattern corresponding to the second bandwidth resource and the reference resource pattern is the same as the relationship between the first basic pattern corresponding to the first bandwidth resource and the reference resource pattern.

[0445] Optionally, the transceiver unit 1610 is further configured to send third indication information, where the third indication information indicates a recommended resource pattern of a reference signal.

[0446] Optionally, the reference resource pattern is a recommended reference signal resource pattern.

[0447] Optionally, the resource pattern of the reference signal is the resource pattern of the reference signal on the first resource, the reference resource pattern is the resource pattern of the reference signal on the second resource, and the first resource and the second resource are different; or, the reference resource pattern is a predefined or preconfigured pattern.

[0448] Optionally, the reference resource pattern is a resource pattern of the reference signal on the second resource, including any one of the following: the reference resource pattern is a resource pattern of the reference signal on at least one time domain unit, the reference resource pattern is a resource pattern of the reference signal on at least one frequency domain unit, the reference resource pattern is a resource pattern of the reference signal on at least one antenna port, or the reference resource pattern is a resource pattern of the reference signal on at least one antenna port group.

[0449] In a second possible design, the device 1600 may be the second device in the aforementioned embodiment (such as the second device in Figure 2 or Figure 11, or the network device in Figures 12 to 15), and the device 1600 may implement the steps or processes corresponding to those performed by the second device in the above method embodiment. The transceiver unit 1610 may be used to perform transceiver-related operations (such as operations of sending and / or receiving data or messages) of the second device in the above method embodiment, and the processing unit 1620 may be used to perform processing-related operations of the second device in the above method embodiment, or operations other than transceiver operations (such as operations other than sending and / or receiving data or messages).

[0450] In one possible implementation, the transceiver unit 1610 is configured to send first indication information, where the first indication information is used to determine a resource pattern for a reference signal, where the resource pattern for the reference signal includes at least one first basic pattern, and the first indication information indicates a relationship between the first basic pattern and the reference resource pattern; the transceiver unit 1610 is further configured to receive or send the reference signal based on the first indication information. Optionally, the processing unit 1620 is configured to determine the resource pattern for the reference signal.

[0451] Optionally, the first indication information includes first information, and the first indication information indicates a relationship between the first basic pattern and the reference resource pattern, including: the first information indicates whether the first basic pattern is updated relative to the reference resource pattern.

[0452] Optionally, the first information indicates that the first basic pattern is updated relative to the reference resource pattern, and the first indication information further includes second information, where the second information indicates the first basic pattern.

[0453] Optionally, the first information indicates that a first parameter in the configuration information of the first basic pattern is updated relative to the first parameter in the configuration information of the reference resource pattern, and the second information indicates the first parameter in the configuration information of the first basic pattern.

[0454] Optionally, the reference resource pattern includes at least one second basic pattern, and the first indication information indicates a relationship between the first basic pattern and the reference resource pattern, including: the first indication information indicates a relationship between the first basic pattern and the second basic pattern.

[0455] Optionally, the configuration information of the first basic pattern includes one or more of the following information: the starting position of the first basic pattern, the domain corresponding to the first basic pattern, and the resource of the reference signal indicated by the first basic pattern, wherein the domain corresponding to the first basic pattern is any one of the following: time domain, frequency domain, and spatial domain.

[0456] Optionally, the resources of the reference signal indicated by the first basic pattern include at least one of the following information: the total number of resources corresponding to the first basic pattern, the total number of resources occupied by the reference signal, the resource density of the resources occupied by the reference signal, the starting position of the resources occupied by the reference signal, the ending position of the resources occupied by the reference signal, the index of the preset pattern used to obtain the first basic pattern, the offset of the resources occupied by the reference signal relative to the preset pattern, the offset direction of the resources occupied by the reference signal relative to the preset pattern, and the change in resource density of the resources occupied by the reference signal relative to the preset pattern.

[0457] Optionally, the transceiver unit 1610 is further configured to send second indication information, where the second indication information indicates at least one bandwidth resource, and the at least one bandwidth resource is associated with a resource pattern of a reference signal.

[0458] Optionally, at least one bandwidth resource includes a first bandwidth resource and a second bandwidth resource, and the resource pattern of the reference signal on the second bandwidth resource is the same as the resource pattern of the reference signal on the first bandwidth resource; or, the first indication information includes first information, the first information indicates whether the first basic pattern is updated relative to the reference resource pattern, and the first information corresponding to the second bandwidth resource is the same as the first information corresponding to the first bandwidth resource; or, the relationship between the first basic pattern corresponding to the second bandwidth resource and the reference resource pattern is the same as the relationship between the first basic pattern corresponding to the first bandwidth resource and the reference resource pattern.

[0459] Optionally, the transceiver unit 1610 is further configured to receive third indication information, where the third indication information indicates a recommended resource pattern of a reference signal.

[0460] Optionally, the reference resource pattern is a recommended reference signal resource pattern.

[0461] Optionally, the resource pattern of the reference signal is the resource pattern of the reference signal on the first resource, the reference resource pattern is the resource pattern of the reference signal on the second resource, and the first resource and the second resource are different; or, the reference resource pattern is a predefined or preconfigured pattern.

[0462] Optionally, the reference resource pattern is a resource pattern of the reference signal on the second resource, including any one of the following: the reference resource pattern is a resource pattern of the reference signal on at least one time domain unit, the reference resource pattern is a resource pattern of the reference signal on at least one frequency domain unit, the reference resource pattern is a resource pattern of the reference signal on at least one antenna port, or the reference resource pattern is a resource pattern of the reference signal on at least one antenna port group.

[0463] It should be understood that the specific process of each unit executing the above corresponding steps has been described in detail in the above method embodiment, and for the sake of brevity, it will not be repeated here.

[0464] It should also be understood that the device 1600 here is embodied in the form of a functional unit. The term "unit" here can refer to an application specific integrated circuit (ASIC), an electronic circuit, a processor (such as a shared processor, a dedicated processor or a group processor, etc.) and a memory for executing one or more software or firmware programs, a combined logic circuit and / or other suitable components that support the described functions. In an optional example, those skilled in the art will understand that the device 1600 can be specifically the communication device in the above-mentioned embodiment, and can be used to execute the various processes and / or steps corresponding to the communication device in the above-mentioned method embodiments. To avoid repetition, they will not be described here.

[0465] The apparatus 1600 of each of the above-described solutions has the function of implementing the corresponding steps performed by the communication device in the above-described method. The functions can be implemented by hardware, or by hardware executing corresponding software implementations. The hardware or software includes one or more modules corresponding to the above-described functions; for example, the transceiver unit can be replaced by a transceiver (for example, the transmitting unit in the transceiver unit can be replaced by a transmitter, and the receiving unit in the transceiver unit can be replaced by a receiver), and other units, such as the processing unit, can be replaced by a processor to respectively perform the transceiver operations and related processing operations in each method embodiment.

[0466] In addition, the transceiver unit 1610 may also be a transceiver circuit (for example, may include a receiving circuit and a transmitting circuit), and the processing unit may be a processing circuit.

[0467] It should be noted that the apparatus in FIG16 may be the communication device in the aforementioned embodiment, or may be a chip or chip system, such as a system on chip (SoC). The transceiver unit may be an input / output circuit or a communication interface; the processing unit may be a processor, microprocessor, or integrated circuit integrated on the chip. This is not limited here.

[0468] Referring to FIG. 17 , FIG. 17 is a schematic diagram of another communication device 1700 provided in an embodiment of the present application. The device 1700 includes a processor 1710 coupled to a memory 1720. The memory 1720 is configured to store computer programs or instructions and / or data. The processor 1710 is configured to execute the computer programs or instructions stored in the memory 1720, or read data stored in the memory 1720, to perform the methods described in the above method embodiments.

[0469] Optionally, there are one or more processors 1710 .

[0470] Optionally, the memory 1720 is one or more.

[0471] Optionally, the memory 1720 is integrated with the processor 1710 or provided separately.

[0472] Optionally, as shown in Figure 17, the device 1700 further includes a transceiver 1730, which is used to receive and / or send signals. For example, the processor 1710 is used to control the transceiver 1730 to receive and / or send signals.

[0473] As an example, the processor 1710 may have the function of the processing unit 1620 shown in FIG. 16 , the memory 1720 may have the function of a storage unit, and the transceiver 1730 may have the function of the transceiver unit 1610 shown in FIG. 16 .

[0474] As a solution, the device 1700 is used to implement the operations performed by the communication device in the above various method embodiments.

[0475] For example, the processor 1710 is configured to execute computer programs or instructions stored in the memory 1720 to implement relevant operations of the first device or the second device in each of the above method embodiments.

[0476] It should be understood that the processor mentioned in the embodiments of the present application may be a central processing unit (CPU), or may be other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor, etc.

[0477] It should also be understood that the memory mentioned in the embodiments of the present application may be a volatile memory and / or a non-volatile memory. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM). For example, RAM can be used as an external cache. By way of example and not limitation, RAM includes the following forms: static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct rambus RAM (DR RAM).

[0478] It should be noted that when the processor is a general-purpose processor, DSP, ASIC, FPGA or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, the memory (storage module) can be integrated into the processor.

[0479] It should also be noted that the memory described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0480] 18 , which is a schematic diagram of a chip system 1800 according to an embodiment of the present application. The chip system 1800 (or also referred to as a processing system) includes a logic circuit 1810 and an input / output interface 1820 .

[0481] Logic circuit 1810 may be a processing circuit within chip system 1800. Logic circuit 1810 may be coupled to a storage unit and invoke instructions within the storage unit, enabling chip system 1800 to implement the methods and functions of various embodiments of the present application. Input / output interface 1820 may be an input / output circuit within chip system 1800, outputting information processed by chip system 1800 or inputting data or signaling information to be processed into chip system 1800 for processing.

[0482] As a solution, the chip system 1800 is used to implement the operations performed by the communication device (such as the first device, and such as the second device) in the above various method embodiments.

[0483] For example, the logic circuit 1810 is used to implement the processing-related operations performed by the communication device (such as the first device, and also the second device) in the above method embodiments; the input / output interface 1820 is used to implement the sending and / or receiving-related operations performed by the communication device (such as the first device, and also the second device) in the above method embodiments.

[0484] An embodiment of the present application further provides a computer-readable storage medium storing computer instructions for implementing the methods executed by a communication device (such as the first device or the second device) in the above-mentioned method embodiments.

[0485] For example, when the computer program is executed by a computer, the computer can implement the method performed by the communication device (such as the first device, and such as the second device) in each embodiment of the above method.

[0486] An embodiment of the present application further provides a computer program product comprising instructions, which, when executed by a computer, implement the methods performed by a communication device (such as the first device or the second device) in the above-mentioned method embodiments.

[0487] The present application also provides a communication system, which includes the first device and / or the second device in each of the above embodiments. For example, the system includes the first device and the second device in Figure 2 or Figure 11. For another example, the system includes the terminal device and the network device in Figure 12, Figure 13, Figure 14, or Figure 15.

[0488] The explanation of the relevant contents and beneficial effects of any of the above-mentioned devices can be referred to the corresponding method embodiments provided above, which will not be repeated here.

[0489] In the several embodiments provided in this application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0490] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part 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, the process or function described in the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. For example, the computer can be a personal computer, a server, or a network device, etc. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from one website, computer, server or data center to another website, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode. 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 includes one or more available media integrations. The available medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a solid state disk (SSD)). For example, the aforementioned available medium includes, but is not limited to, various media that can store program code, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0491] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A signal transmission method, characterized in that: include: receiving first indication information, where the first indication information is used to determine a resource pattern of a reference signal, where the resource pattern of the reference signal includes at least one first basic pattern, and the first indication information indicates a relationship between the first basic pattern and a reference resource pattern; Based on the first indication information, the reference signal is received or sent.

2. The method according to claim 1, characterized in that The first indication information includes first information, and the first indication information indicates a relationship between the first basic pattern and a reference resource pattern, including: the first information indicates whether the first basic pattern is updated relative to the reference resource pattern.

3. The method according to claim 2, characterized in that The first information indicates that the first basic pattern is updated relative to the reference resource pattern, The first indication information further includes second information, and the second information indicates the first basic pattern.

4. The method according to claim 3, characterized in that: The first information indicates that a first parameter in the configuration information of the first basic pattern is updated relative to a first parameter in the configuration information of the reference resource pattern, and the second information indicates the first parameter in the configuration information of the first basic pattern.

5. The method according to any one of claims 1 to 4, characterized in that The reference resource pattern includes at least one second basic pattern, and the first indication information indicates a relationship between the first basic pattern and the reference resource pattern, including: the first indication information indicates a relationship between the first basic pattern and the second basic pattern.

6. The method according to any one of claims 1 to 5, characterized in that The configuration information of the first basic pattern includes one or more of the following information: the starting position of the first basic pattern, the domain corresponding to the first basic pattern, the resource of the reference signal indicated by the first basic pattern, The domain corresponding to the first basic pattern is any one of the following: time domain, frequency domain, and spatial domain.

7. The method according to claim 6, characterized in that The resource of the reference signal indicated by the first basic pattern includes at least one of the following information: The total number of resources corresponding to the first basic pattern, the total number of resources occupied by the reference signal, the resource density of the resources occupied by the reference signal, the starting position of the resources occupied by the reference signal, the ending position of the resources occupied by the reference signal, the index of the preset pattern used to obtain the first basic pattern, the offset of the resources occupied by the reference signal relative to the preset pattern, the offset direction of the resources occupied by the reference signal relative to the preset pattern, and the change in resource density of the resources occupied by the reference signal relative to the preset pattern.

8. The method according to any one of claims 1 to 7, characterized in that The method further comprises: Second indication information is received, where the second indication information indicates at least one bandwidth resource, and the at least one bandwidth resource is associated with a resource pattern of the reference signal.

9. The method according to claim 8, characterized in that The at least one bandwidth resource includes a first bandwidth resource and a second bandwidth resource, The resource pattern of the reference signal on the second bandwidth resource is the same as the resource pattern of the reference signal on the first bandwidth resource; or, The first indication information includes first information, the first information indicating whether the first basic pattern is updated relative to the reference resource pattern, and the first information corresponding to the second bandwidth resource is the same as the first information corresponding to the first bandwidth resource; or The relationship between the first basic pattern corresponding to the second bandwidth resource and the reference resource pattern is the same as the relationship between the first basic pattern corresponding to the first bandwidth resource and the reference resource pattern.

10. The method according to any one of claims 1 to 9, characterized in that Before receiving the first indication information, the method further includes: Third indication information is sent, where the third indication information indicates a recommended resource pattern of a reference signal.

11. The method according to claim 10, characterized in that The reference resource pattern is a resource pattern of the recommended reference signal.

12. The method according to any one of claims 1 to 10, characterized in that The resource pattern of the reference signal is a resource pattern of the reference signal on a first resource, the reference resource pattern is a resource pattern of the reference signal on a second resource, and the first resource and the second resource are different; or The reference resource pattern is a predefined or preconfigured pattern.

13. The method according to claim 12, characterized in that The reference resource pattern is a resource pattern of the reference signal on the second resource, including any one of the following: The reference resource pattern is a resource pattern of the reference signal on at least one time domain unit, the reference resource pattern is a resource pattern of the reference signal on at least one frequency domain unit, the reference resource pattern is a resource pattern of the reference signal on at least one antenna port, or the reference resource pattern is a resource pattern of the reference signal on at least one antenna port group.

14. A signal transmission method, characterized in that: include: Sending first indication information, where the first indication information is used to determine a resource pattern of a reference signal, where the resource pattern of the reference signal includes at least one first basic pattern, and the first indication information indicates a relationship between the first basic pattern and a reference resource pattern; Based on the first indication information, the reference signal is received or sent.

15. The method according to claim 14, characterized in that The first indication information includes first information, and the first indication information indicates a relationship between the first basic pattern and a reference resource pattern, including: the first information indicates whether the first basic pattern is updated relative to the reference resource pattern.

16. The method according to claim 15, characterized in that The first information indicates that the first basic pattern is updated relative to the reference resource pattern, The first indication information further includes second information, and the second information indicates the first basic pattern.

17. The method according to claim 16, characterized in that The first information indicates that a first parameter in the configuration information of the first basic pattern is updated relative to a first parameter in the configuration information of the reference resource pattern, and the second information indicates the first parameter in the configuration information of the first basic pattern.

18. The method according to any one of claims 14 to 17, characterized in that The reference resource pattern includes at least one second basic pattern, and the first indication information indicates a relationship between the first basic pattern and the reference resource pattern, including: the first indication information indicates a relationship between the first basic pattern and the second basic pattern.

19. The method according to any one of claims 14 to 18, characterized in that The configuration information of the first basic pattern includes one or more of the following information: the starting position of the first basic pattern, the domain corresponding to the first basic pattern, the resource of the reference signal indicated by the first basic pattern, The domain corresponding to the first basic pattern is any one of the following: time domain, frequency domain, and spatial domain.

20. The method according to claim 19, characterized in that The resource of the reference signal indicated by the first basic pattern includes at least one of the following information: The total number of resources corresponding to the first basic pattern, the total number of resources occupied by the reference signal, the resource density of the resources occupied by the reference signal, the starting position of the resources occupied by the reference signal, the ending position of the resources occupied by the reference signal, the index of the preset pattern used to obtain the first basic pattern, the offset of the resources occupied by the reference signal relative to the preset pattern, the offset direction of the resources occupied by the reference signal relative to the preset pattern, and the change in resource density of the resources occupied by the reference signal relative to the preset pattern.

21. The method according to any one of claims 14 to 20, characterized in that The method further comprises: Second indication information is sent, where the second indication information indicates at least one bandwidth resource, and the at least one bandwidth resource is associated with the resource pattern of the reference signal.

22. The method according to claim 21, characterized in that The at least one bandwidth resource includes a first bandwidth resource and a second bandwidth resource, The resource pattern of the reference signal on the second bandwidth resource is the same as the resource pattern of the reference signal on the first bandwidth resource; or, The first indication information includes first information, the first information indicating whether the first basic pattern is updated relative to the reference resource pattern, and the first information corresponding to the second bandwidth resource is the same as the first information corresponding to the first bandwidth resource; or The relationship between the first basic pattern corresponding to the second bandwidth resource and the reference resource pattern, and the first bandwidth resource The relationship between the corresponding first basic pattern and the reference resource pattern is the same.

23. The method according to any one of claims 14 to 22, characterized in that Before receiving the first indication information, the method further includes: Third indication information is received, where the third indication information indicates a recommended resource pattern of a reference signal.

24. The method according to claim 23, characterized in that The reference resource pattern is a resource pattern of the recommended reference signal.

25. The method according to any one of claims 14 to 24, characterized in that The resource pattern of the reference signal is a resource pattern of the reference signal on a first resource, the reference resource pattern is a resource pattern of the reference signal on a second resource, and the first resource and the second resource are different; or The reference resource pattern is a predefined or preconfigured pattern.

26. The method according to claim 25, characterized in that The reference resource pattern is a resource pattern of the reference signal on the second resource, including any one of the following: The reference resource pattern is a resource pattern of the reference signal on at least one time domain unit, the reference resource pattern is a resource pattern of the reference signal on at least one frequency domain unit, the reference resource pattern is a resource pattern of the reference signal on at least one antenna port, or the reference resource pattern is a resource pattern of the reference signal on at least one antenna port group.

27. A communication device, characterized in that: include: A unit for performing the method according to any one of claims 1 to 13, or a unit for performing the method according to any one of claims 14 to 26.

28. A communication device, characterized in that: Comprising a processor, the processor is used to execute a computer program or instruction stored in a memory, so that the communication device performs the method according to any one of claims 1 to 13, or so that the communication device performs the method according to any one of claims 14 to 26.

29. The device according to claim 28, characterized in that The device further comprises the memory and / or the communication interface, wherein the communication interface is coupled to the processor. The communication interface is used to input and / or output information.

30. The device according to any one of claims 27 to 29, characterized in that The device is any one of the following: a communication device, a chip, a chip system, or a circuit.

31. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program or instructions, and when the computer program or instructions are executed on the communication device, the communication device executes the method described in any one of claims 1 to 13, or the communication device executes the method described in any one of claims 14 to 26.

32. A computer program product, characterized in that The computer program product comprises a computer program or instructions for executing the method according to any one of claims 1 to 13, or the computer program product comprises a computer program or instructions for executing the method according to any one of claims 14 to 26.

Images