Communication method and device

Abstract

An embodiment of the present application provides a communication method and apparatus. The method includes: a terminal device determines first indication information, wherein the first indication information is used to indicate a first parameter, and the first parameter is used to indicate the maximum number of times the terminal device detects a first reference signal port on a first time-frequency resource to receive at least one first signal from a network device within a first time period, wherein the first time-frequency resource is part or all of the time-frequency resource that carries at least one first signal; the terminal device sends the first indication information to the network device. In this method, the network device configures the reference signal port through the channel estimation capability reported by the terminal device, thereby reducing the situation where the terminal device cannot suppress all or most of the interference information, thereby improving the interference suppression effect of the terminal device.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a communication method and device. Background Art

[0002] In communications systems, spatial division multiplexing (SDM) technology improves channel transmission efficiency and has therefore gained widespread application. However, in actual applications of information exchange between terminals and base stations, SDM may cause terminals to receive interference from other terminals. Therefore, terminals need to suppress this interference. Specifically, a base station uses SDM to transmit signals to multiple terminal devices on the same time-frequency resources and configures different reference signal ports for these terminal devices. The terminal devices perform channel estimation on the reference signal ports and determine the channel coefficients to suppress all or most of the interfering signals.

[0003] However, the interference suppression capability of a terminal device is limited by its channel estimation capability. The terminal device may not be able to perform channel estimation for all reference signal ports corresponding to all scheduling bandwidths or scheduling sub-bandwidths, resulting in the inability to suppress all or most interference signals.

[0004] In the 5G New Radio Access Technology (NR) system, the base station is unable to determine the channel estimation capability of terminal devices. As a result, terminal devices with limited channel estimation capabilities transmit signals on the same frequency simultaneously with a large number of interfering terminal devices. Terminal devices with limited channel estimation capabilities are unable to perform channel estimation on all reference signal ports and cannot suppress the signals of all or most interfering terminal devices, thus limiting transmission performance. Summary of the Invention

[0005] An embodiment of the present application provides a communication method and apparatus, in which a network device configures a reference signal port according to the channel estimation capability reported by a terminal device, thereby reducing the situation where the terminal device is unable to suppress all or most of the interference information, thereby improving the interference suppression effect of the terminal device.

[0006] In a first aspect, an embodiment of the present application provides a communication method, including: a terminal device determines first indication information, wherein the first indication information is used to indicate a first parameter, and the first parameter is used to indicate the maximum number of times the terminal device detects a first reference signal port on a first time-frequency resource to receive at least one first signal from a network device within a first time period, wherein the first time-frequency resource is part or all of the time-frequency resources that carry at least one first signal, and the terminal device sends the first indication information to the network device.

[0007] In this way, the terminal device reports the channel estimation capability, so that the network device configures the reference signal ports corresponding to multiple signals on the time-frequency resources according to the channel estimation capability of the terminal device, thereby reducing the situation where the terminal device cannot perform channel estimation on all reference signal ports, so that the terminal device can determine all interference signals and suppress them, thereby improving the interference suppression effect of the terminal device.

[0008] Optionally, the first parameter includes the maximum total number of times that the terminal device detects the first reference signal port for all resource groups in the first time-frequency resource on all antennas of at least one antenna used by the terminal device to receive at least one first signal within the first time period.

[0009] Alternatively, the first parameter includes the maximum total number of times that the terminal device detects the first reference signal port for all resource groups in the first time-frequency resource on any one of at least one antenna used by the terminal device to receive at least one first signal within a first time period.

[0010] Alternatively, the first parameter includes the maximum total number of times that the terminal device detects the first reference signal port on all antennas of at least one antenna used by the terminal device to receive at least one first signal for any resource group in the first time-frequency resource in the first time period.

[0011] Alternatively, the first parameter includes a maximum number of first reference signal ports detected by the terminal device for any resource group in the first time-frequency resource to receive at least one first signal during the first time period. This enriches the representation of the first parameter and facilitates the terminal device to select an appropriate method for reporting channel estimation capabilities based on actual application scenarios.

[0012] Optionally, the first parameter includes a first value, wherein the first value is the maximum total number of times the terminal device detects the first reference signal port for all resource groups in the first time-frequency resource on any one of the at least one antenna used by the terminal device to receive at least one first signal in a first time period to receive at least one first signal when the number of at least one antenna used by the terminal device to receive at least one first signal is a second value.

[0013] Alternatively, the first parameter includes a third value, wherein the third value is, when the number of resource groups in the first time-frequency resource is a fourth value, the terminal device detects the first reference signal port for any resource group in the first time-frequency resource within the first time period to receive at least one first signal, on all antennas of at least one antenna used by the terminal device to receive at least one first signal.

[0014] Alternatively, the first parameter includes a fifth value, wherein the fifth value is, when the terminal device receives at least one first signal within the first time period, on any one of the at least one antennas used by the terminal device to receive at least one first signal, for any resource group in the first time-frequency resource, under the condition that the number of first reference signal ports detected is a sixth value, the maximum value of the product of the number of at least one antenna and the number of resource groups included in the first time-frequency resource.

[0015] Alternatively, the first parameter includes a seventh value, wherein the seventh value is, when the number of at least one antenna used by the terminal device for receiving at least one first signal is an eighth value, and on any antenna of the at least one antenna used by the terminal device for receiving at least one first signal, for any resource group in the first time-frequency resource, the number of first reference signal ports detected is a ninth value, the maximum number of resource groups included in the first time-frequency resource. In this way, the expression method of the first parameter is enriched, making it convenient for the terminal device to select an appropriate method to report the channel estimation capability according to the actual application scenario.

[0016] Optionally, the method further includes: the terminal device sending second indication information to the network device, wherein the second indication information is used to indicate any one of the second value, the fourth value, the sixth value, the eighth value, or the ninth value, or the second indication information is used to indicate the eighth value and the ninth value. In this way, it is convenient for the network device to determine the channel estimation capability of the terminal device.

[0017] Optionally, the method further includes: the terminal device determines the reference signal port to be detected on the second time-frequency resource based on the first parameter; wherein, in the terminal device, when the maximum number of the first reference signal ports detected for any resource group in the second time-frequency resource is less than the first threshold, the terminal device detects part or all of the reference signal ports in the CDM group where the reference signal port associated with the first signal is located on the second time-frequency resource, and the second time-frequency resource is part or all of the time-frequency resource that carries the first signal. In this way, the terminal device can preferentially detect the reference signal port in the CDM group where the reference signal port associated with the first signal is located based on its channel estimation, narrow the scope of detecting the reference signal port, reduce the number of times the terminal device performs channel estimation, and reduce signaling overhead.

[0018] Optionally, the method further includes: the terminal device receiving third indication information, where the third indication information is used to indicate the second time-frequency resource. In this way, it is convenient for the terminal device to determine the second time-frequency resource, thereby determining the detection reference signal port.

[0019] In a second aspect, an embodiment of the present application provides a communication method, including: a network device receives first indication information from a terminal device, wherein the first indication information is used to indicate a first parameter, and the first parameter is used to indicate the maximum number of times the terminal device detects a first reference signal port on a first time-frequency resource to receive at least one first signal from the network device within a first time period, and the first time-frequency resource is part or all of the time-frequency resource that carries at least one first signal; the network device determines the first parameter based on the first indication information.

[0020] Optionally, the first parameter includes the maximum total number of times that the terminal device detects the first reference signal port for all resource groups in the first time-frequency resource on all antennas of at least one antenna used by the terminal device to receive at least one first signal within the first time period.

[0021] Alternatively, the first parameter includes the maximum total number of times that the terminal device detects the first reference signal port for all resource groups in the first time-frequency resource on any one of at least one antenna used by the terminal device to receive at least one first signal within a first time period.

[0022] Alternatively, the first parameter includes the maximum total number of times that the terminal device detects the first reference signal port on all antennas of at least one antenna used by the terminal device to receive at least one first signal for any resource group in the first time-frequency resource in the first time period.

[0023] Alternatively, the first parameter includes the maximum number of first reference signal ports detected by the terminal device for any resource group in the first time-frequency resource in order to receive at least one first signal within the first time period.

[0024] Optionally, the first parameter includes a first value, wherein the first value is the maximum total number of times the terminal device detects the first reference signal port for all resource groups in the first time-frequency resource on any one of the at least one antenna used by the terminal device to receive at least one first signal in a first time period to receive at least one first signal when the number of at least one antenna used by the terminal device to receive at least one first signal is a second value.

[0025] Alternatively, the first parameter includes a third value, wherein the third value is, when the number of resource groups in the first time-frequency resource is a fourth value, the terminal device detects the first reference signal port for any resource group in the first time-frequency resource within the first time period to receive at least one first signal, on all antennas of at least one antenna used by the terminal device to receive at least one first signal.

[0026] Alternatively, the first parameter includes a fifth value, wherein the fifth value is, when the terminal device receives at least one first signal within the first time period, on any one of the at least one antennas used by the terminal device to receive at least one first signal, for any resource group in the first time-frequency resource, under the condition that the number of first reference signal ports detected is a sixth value, the maximum value of the product of the number of at least one antenna and the number of resource groups included in the first time-frequency resource.

[0027] Alternatively, the first parameter includes a seventh value, wherein the seventh value is the maximum number of resource groups included in the first time-frequency resource under the condition that the number of at least one antenna used by the terminal device to receive at least one first signal is an eighth value, and for any resource group in the first time-frequency resource on any antenna of the at least one antenna used by the terminal device to receive at least one first signal, the number of first reference signal ports detected is a ninth value.

[0028] Optionally, the method also includes: the network device receives second indication information from the terminal device, wherein the second indication information is used to indicate any one of the second value, fourth value, sixth value, eighth value or ninth value, or the second indication information is used to indicate the eighth value and the ninth value.

[0029] Optionally, after the network device determines the first parameter based on the first indication information, the method also includes: the network device determines the second time-frequency resource and the terminal device to receive the first signal based on the first parameter, and for any resource group in the second time-frequency resource, detects the first maximum value of the number of first reference signal ports, wherein the second time-frequency resource is part or all of the time-frequency resource corresponding to the first signal determined by the network device based on the first parameter.

[0030] Optionally, the method also includes: when the first maximum value is less than the first threshold, the network device determines that the CDM group where the reference signal port associated with the first signal is located includes at least one second reference signal port, and the second reference signal port is a reference signal port associated with the interference signal carried on part or all of the resource group in the second time-frequency resource.

[0031] Optionally, the method also includes: the network device sends third indication information, where the third indication information is used to indicate the second time-frequency resource.

[0032] In a third aspect, an embodiment of the present application provides a communication method, including: a terminal device determines that the reference signal port detected on the second time-frequency resource includes part or all of the reference signal ports in the CDM group where the reference signal port associated with the first signal is located, and the second time-frequency resource is the time-frequency resource corresponding to the first signal; the terminal device receives the first signal.

[0033] Optionally, the CDM group in which the reference signal port associated with the first signal is located includes a part of the second reference signal ports, which are: second reference signal ports in which the power or intensity received by the terminal device is greater than a second threshold, or second reference signal ports in which the correlation with the reference signal port associated with the first signal is greater than a third threshold.

[0034] In a fourth aspect, an embodiment of the present application provides a communication method, including: a network device determines that the CDM group where the reference signal port associated with the first signal is located includes at least one second reference signal port, wherein the second reference signal port is a reference signal port associated with an interference signal carried on a second time-frequency resource, and the second time-frequency resource is the time-frequency resource corresponding to the first signal; the network device sends a first signal to a terminal device.

[0035] Optionally, when the sum of the number of second reference signal ports and the number of reference signal ports associated with the first signal is less than or equal to the number of reference signal ports corresponding to the CDM group where the reference signal ports associated with the first signal are located, the CDM group where the reference signal ports associated with the first signal are located includes all the second reference signal ports.

[0036] Optionally, when the sum of the number of second reference signal ports and the number of reference signal ports associated with the first signal is greater than the number of reference signal ports corresponding to the CDM group where the reference signal ports associated with the first signal are located, the CDM group where the reference signal ports associated with the first signal are located includes a part of the second reference signal ports, and other CDM groups include another part of the second reference signal ports.

[0037] Optionally, the CDM group in which the reference signal port associated with the first signal is located includes a part of the second reference signal ports, which are: second reference signal ports in which the power or intensity received by the terminal device is greater than a second threshold, or second reference signal ports in which the correlation with the reference signal port associated with the first signal is greater than a third threshold.

[0038] In a fifth aspect, an embodiment of the present application provides a communication device. The communication device may be a terminal device, or a chip or chip system within a terminal device. The communication device may include a processing unit and a communication unit. When the communication device is a terminal device, the processing unit may be a processor, and the communication unit may be a communication interface, an interface circuit, or a transceiver. The communication device may also include a storage unit, which may be a memory. The storage unit is used to store instructions, and the processing unit executes the instructions stored in the storage unit to enable the terminal device to implement a communication method described in the first aspect or any possible implementation of the first aspect. When the communication device is a chip within a terminal device, the processing unit may be a processor, and the communication unit may be a communication interface, such as an input / output interface, a pin, or a circuit. The processing unit executes the instructions stored in the storage unit to enable the terminal device to implement a communication method described in the first aspect or any possible implementation of the first aspect. The storage unit may be a storage unit within the chip (e.g., a register, a cache, etc.), or a storage unit within the terminal device located outside the chip (e.g., a read-only memory, a random access memory, etc.). Exemplarily, the communication device includes: a processing unit and a communication unit. The processing unit is configured to determine first indication information, wherein the first indication information is configured to indicate a first parameter, and the first parameter is configured to indicate a maximum number of times a terminal device detects a first reference signal port on a first time-frequency resource to receive at least one first signal from a network device within a first time period, wherein the first time-frequency resource is part or all of a time-frequency resource that carries the at least one first signal; and the communication unit is configured to send the first indication information to the network device.

[0039] Optionally, the first parameter includes the maximum total number of times that the terminal device detects the first reference signal port for all resource groups in the first time-frequency resource on all antennas of at least one antenna used by the terminal device to receive at least one first signal within the first time period.

[0040] Alternatively, the first parameter includes the maximum total number of times that the terminal device detects the first reference signal port for all resource groups in the first time-frequency resource on any one of at least one antenna used by the terminal device to receive at least one first signal within a first time period.

[0041] Alternatively, the first parameter includes the maximum total number of times that the terminal device detects the first reference signal port on all antennas of at least one antenna used by the terminal device to receive at least one first signal for any resource group in the first time-frequency resource in the first time period.

[0042] Alternatively, the first parameter includes the maximum number of first reference signal ports detected by the terminal device for any resource group in the first time-frequency resource in order to receive at least one first signal within the first time period.

[0043] Optionally, the first parameter includes a first value, wherein the first value is the maximum total number of times the terminal device detects the first reference signal port for all resource groups in the first time-frequency resource on any one of the at least one antenna used by the terminal device to receive at least one first signal in a first time period to receive at least one first signal when the number of at least one antenna used by the terminal device to receive at least one first signal is a second value.

[0044] Alternatively, the first parameter includes a third value, wherein the third value is, when the number of resource groups in the first time-frequency resource is a fourth value, the terminal device detects the first reference signal port for any resource group in the first time-frequency resource within the first time period to receive at least one first signal, on all antennas of at least one antenna used by the terminal device to receive at least one first signal.

[0045] Alternatively, the first parameter includes a fifth value, wherein the fifth value is, when the terminal device receives at least one first signal within the first time period, on any one of the at least one antennas used by the terminal device to receive at least one first signal, for any resource group in the first time-frequency resource, under the condition that the number of first reference signal ports detected is a sixth value, the maximum value of the product of the number of at least one antenna and the number of resource groups included in the first time-frequency resource.

[0046] Alternatively, the first parameter includes a seventh value, wherein the seventh value is the maximum number of resource groups included in the first time-frequency resource under the condition that the number of at least one antenna used by the terminal device to receive at least one first signal is an eighth value, and for any resource group in the first time-frequency resource on any antenna of the at least one antenna used by the terminal device to receive at least one first signal, the number of first reference signal ports detected is a ninth value.

[0047] Optionally, the communication unit is also used to send second indication information to the network device, wherein the second indication information is used to indicate any one of the second value, fourth value, sixth value, eighth value or ninth value, or the second indication information is used to indicate the eighth value and the ninth value.

[0048] Optionally, the processing unit is further used to determine the reference signal port detected on the second time-frequency resource based on the first parameter; wherein, in the terminal device, for any resource group in the second time-frequency resource, when the maximum number of first reference signal ports detected is less than the first threshold, the terminal device detects part or all of the reference signal ports in the CDM group where the reference signal port associated with the first signal is located on the second time-frequency resource, and the second time-frequency resource is part or all of the time-frequency resource carrying the first signal.

[0049] Optionally, the communication unit is further used to receive third indication information, where the third indication information is used to indicate the second time-frequency resource.

[0050] In a sixth aspect, embodiments of the present application provide a communication device. The communication device may be a network device, or a chip or chip system within the network device. The communication device may include a processing unit and a communication unit. When the communication device is a network device, the processing unit may be a processor, and the communication unit may be a communication interface or interface circuit. The communication device may also include a storage unit, which may be a memory. The storage unit is used to store instructions, and the processing unit executes the instructions stored in the storage unit to cause the network device to implement a communication method described in the second aspect or any possible implementation of the second aspect. When the communication device is a chip or chip system within the network device, the processing unit may be a processor, and the communication unit may be a communication interface. For example, the communication interface may be an input / output interface, a pin, or a circuit. The processing unit executes the instructions stored in the storage unit to cause the network device to implement a communication method described in the second aspect or any possible implementation of the second aspect. The storage unit may be a storage unit within the chip (e.g., a register, a cache, etc.), or a storage unit within the network device located outside the chip (e.g., a read-only memory, a random access memory, etc.).

[0051] Exemplarily, the communication apparatus includes a communication unit and a processing unit. The communication unit is configured to receive first indication information from a terminal device, wherein the first indication information is configured to indicate a first parameter, and the first parameter is configured to indicate a maximum number of times the terminal device detects a first reference signal port on a first time-frequency resource to receive at least one first signal from a network device within a first time period, where the first time-frequency resource is part or all of a time-frequency resource that carries the at least one first signal; and the processing unit is configured to determine the first parameter based on the first indication information.

[0052] Optionally, the first parameter includes the maximum total number of times that the terminal device detects the first reference signal port for all resource groups in the first time-frequency resource on all antennas of at least one antenna used by the terminal device to receive at least one first signal within the first time period.

[0053] Alternatively, the first parameter includes the maximum total number of times that the terminal device detects the first reference signal port for all resource groups in the first time-frequency resource on any one of at least one antenna used by the terminal device to receive at least one first signal within a first time period.

[0054] Alternatively, the first parameter includes the maximum total number of times that the terminal device detects the first reference signal port on all antennas of at least one antenna used by the terminal device to receive at least one first signal for any resource group in the first time-frequency resource in the first time period.

[0055] Alternatively, the first parameter includes the maximum number of first reference signal ports detected by the terminal device for any resource group in the first time-frequency resource in order to receive at least one first signal within the first time period.

[0056] Optionally, the first parameter includes a first value, wherein the first value is the maximum total number of times the terminal device detects the first reference signal port for all resource groups in the first time-frequency resource on any one of the at least one antenna used by the terminal device to receive at least one first signal in a first time period to receive at least one first signal when the number of at least one antenna used by the terminal device to receive at least one first signal is a second value.

[0057] Alternatively, the first parameter includes a third value, wherein the third value is, when the number of resource groups in the first time-frequency resource is a fourth value, the terminal device detects the first reference signal port for any resource group in the first time-frequency resource within the first time period to receive at least one first signal, on all antennas of at least one antenna used by the terminal device to receive at least one first signal.

[0058] Alternatively, the first parameter includes a fifth value, wherein the fifth value is, when the terminal device receives at least one first signal within the first time period, on any one of the at least one antennas used by the terminal device to receive at least one first signal, for any resource group in the first time-frequency resource, under the condition that the number of first reference signal ports detected is a sixth value, the maximum value of the product of the number of at least one antenna and the number of resource groups included in the first time-frequency resource.

[0059] Alternatively, the first parameter includes a seventh value, wherein the seventh value is the maximum number of resource groups included in the first time-frequency resource under the condition that the number of at least one antenna used by the terminal device to receive at least one first signal is an eighth value, and for any resource group in the first time-frequency resource on any antenna of the at least one antenna used by the terminal device to receive at least one first signal, the number of first reference signal ports detected is a ninth value.

[0060] Optionally, the communication unit is also used to receive second indication information from the terminal device, wherein the second indication information is used to indicate any one of the second value, fourth value, sixth value, eighth value or ninth value, or the second indication information is used to indicate the eighth value and the ninth value.

[0061] Optionally, the processing unit is also used to determine the second time-frequency resources and the terminal device for receiving the first signal based on the first parameter, and detect the first maximum value of the number of first reference signal ports for any resource group in the second time-frequency resources, wherein the second time-frequency resources are part or all of the network devices of the time-frequency resources corresponding to the first signal determined based on the first parameter.

[0062] Optionally, the processing unit is also used to determine, when the first maximum value is less than the first threshold, that the CDM group to which the reference signal port associated with the first signal belongs includes at least one second reference signal port, and the second reference signal port is a reference signal port associated with the interference signal carried on part or all of the resource groups in the second time-frequency resources.

[0063] Optionally, the communication unit is further used to send third indication information, where the third indication information is used to indicate the second time-frequency resource.

[0064] In a seventh aspect, an embodiment of the present application provides a communication device. The communication device may be a terminal device, or a chip or chip system within a terminal device. The communication device may include a processing unit and a communication unit. When the communication device is a terminal device, the processing unit may be a processor, and the communication unit may be a communication interface, an interface circuit, or a transceiver. The communication device may also include a storage unit, which may be a memory. The storage unit is used to store instructions, and the processing unit executes the instructions stored in the storage unit to enable the terminal device to implement a communication method described in the first aspect or any possible implementation of the first aspect. When the communication device is a chip within a terminal device, the processing unit may be a processor, and the communication unit may be a communication interface, such as an input / output interface, a pin, or a circuit. The processing unit executes the instructions stored in the storage unit to enable the terminal device to implement a communication method described in the third aspect or any possible implementation of the third aspect. The storage unit may be a storage unit within the chip (e.g., a register, a cache, etc.), or a storage unit within the terminal device located outside the chip (e.g., a read-only memory, a random access memory, etc.).

[0065] Exemplarily, the communication device includes a processing unit and a communication unit. The processing unit is configured to determine that the reference signal ports detected on the second time-frequency resource include some or all reference signal ports in the CDM group in which the reference signal port associated with the first signal is located, and the second time-frequency resource is the time-frequency resource corresponding to the first signal; and the communication unit is configured to receive the first signal.

[0066] Optionally, the CDM group in which the reference signal port associated with the first signal is located includes a part of the second reference signal ports, which are: second reference signal ports in which the power or intensity received by the terminal device is greater than a second threshold, or second reference signal ports in which the correlation with the reference signal port associated with the first signal is greater than a third threshold.

[0067] In an eighth aspect, an embodiment of the present application provides a communication device. The communication device may be a network device, or a chip or chip system within the network device. The communication device may include a processing unit and a communication unit. When the communication device is a network device, the processing unit may be a processor, and the communication unit may be a communication interface or interface circuit. The communication device may also include a storage unit, which may be a memory. The storage unit is used to store instructions, and the processing unit executes the instructions stored in the storage unit to cause the network device to implement a communication method described in the fourth aspect or any possible implementation of the fourth aspect. When the communication device is a chip or chip system within the network device, the processing unit may be a processor, and the communication unit may be a communication interface. For example, the communication interface may be an input / output interface, a pin, or a circuit. The processing unit executes the instructions stored in the storage unit to cause the network device to implement a communication method described in the second aspect or any possible implementation of the second aspect. The storage unit may be a storage unit within the chip (e.g., a register, a cache, etc.), or a storage unit within the network device located outside the chip (e.g., a read-only memory, a random access memory, etc.).

[0068] Exemplarily, the communication device includes a processing unit and a communication unit. The processing unit is configured to determine that a CDM group containing a reference signal port associated with the first signal includes at least one second reference signal port, wherein the second reference signal port is a reference signal port associated with an interference signal carried on a second time-frequency resource, and the second time-frequency resource is a time-frequency resource corresponding to the first signal; and the communication unit is configured to send the first signal to a terminal device.

[0069] Optionally, when the sum of the number of second reference signal ports and the number of reference signal ports associated with the first signal is less than or equal to the number of reference signal ports corresponding to the CDM group where the reference signal ports associated with the first signal are located, the CDM group where the reference signal ports associated with the first signal are located includes all the second reference signal ports.

[0070] Optionally, when the sum of the number of second reference signal ports and the number of reference signal ports associated with the first signal is greater than the number of reference signal ports corresponding to the CDM group where the reference signal ports associated with the first signal are located, the CDM group where the reference signal ports associated with the first signal are located includes a part of the second reference signal ports, and other CDM groups include another part of the second reference signal ports.

[0071] Optionally, the CDM group in which the reference signal port associated with the first signal is located includes a part of the second reference signal ports, which are: second reference signal ports in which the power or intensity received by the terminal device is greater than a second threshold, or second reference signal ports in which the correlation with the reference signal port associated with the first signal is greater than a third threshold.

[0072] In the ninth aspect, an embodiment of the present application also provides a system, which includes at least one communication device mentioned in the embodiment of the present application. At least one device in the system can be integrated into a complete machine or equipment, or at least one device in the system can also be independently set as a component or device.

[0073] In a tenth aspect, an embodiment of the present application further provides a terminal, which includes at least one communication device or any of the above systems.

[0074] In the eleventh aspect, an embodiment of the present application provides a chip comprising at least one processor and an interface; the interface is used to provide program instructions or data to at least one processor; and at least one processor is used to execute program line instructions to implement the method described in the first aspect, the second aspect, the third aspect or the fourth aspect.

[0075] In the twelfth aspect, an embodiment of the present application provides a communication device, comprising: at least one processor, configured to call a program in a memory to execute a method as described in the first aspect, the second aspect, the third aspect, or the fourth aspect.

[0076] In the thirteenth aspect, an embodiment of the present application provides a communication device, comprising: at least one processor and an interface circuit, the interface circuit being used to provide information input and / or information output for the at least one processor, and the at least one processor being used to execute the method described in the first aspect, the second aspect, the third aspect or the fourth aspect.

[0077] In a fourteenth aspect, an embodiment of the present application provides a computer-readable storage medium, which stores instructions. When the instructions are executed, the computer executes the method described in the first aspect, the second aspect, the third aspect or the fourth aspect.

[0078] In aspect 15, an embodiment of the present application provides a computer program product, which includes a computer program stored in a readable storage medium. At least one processor of an electronic device can read the computer program from the readable storage medium, and at least one processor executes the computer program so that the electronic device executes the method described in aspect 1, aspect 2, aspect 3 or aspect 4.

[0079] It should be understood that the fifth to fifteenth aspects of the present application correspond to the technical solutions of the first, second, third or fourth aspects of the present application, and the beneficial effects achieved by each aspect and the corresponding feasible implementation methods are similar and will not be repeated. BRIEF DESCRIPTION OF THE DRAWINGS

[0080] Figure 1 A schematic diagram of the structure of a communication system provided in an embodiment of the present application;

[0081] Figure 2 A schematic diagram of interference information existing in the first downlink communication provided in an embodiment of the present application;

[0082] Figure 3 A schematic diagram showing interference information in a second downlink communication according to an embodiment of the present application;

[0083] Figure 4 A schematic diagram of interference information in a third downlink communication provided in an embodiment of the present application;

[0084] Figure 5 A schematic diagram of a 5G DMRS pattern provided in an embodiment of the present application;

[0085] Figure 6 A flow chart of a communication method provided in this application;

[0086] Figure 7 A flow chart of a communication method provided in this application;

[0087] Figure 8 A schematic diagram of the first DMRS port configuration provided in an embodiment of the present application;

[0088] Figure 9 A schematic diagram of the second DMRS port configuration provided in an embodiment of the present application;

[0089] Figure 10 A schematic diagram of the third DMRS port configuration provided in an embodiment of the present application;

[0090] Figure 11 A flow chart of a communication method provided in an embodiment of the present application;

[0091] Figure 12 A schematic diagram of the structure of a communication device provided in an embodiment of the present application;

[0092] Figure 13 A schematic diagram of the structure of a chip provided in an embodiment of the present application. DETAILED DESCRIPTION

[0093] It should be noted that the network architecture and business scenarios described in the embodiments of the present application are intended to more clearly illustrate the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided in the embodiments of the present application. Ordinary technicians in this field can know that with the evolution of network architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

[0094] The communication method of the embodiment of the present application can be applied to various communication systems. For example, Figure 1 As shown, Figure 1 Schematic diagram of a communication system applicable to the present application. The communication system 100 is described as including one network device 110 and two terminal devices 120. It is understood that the communication system 100 may include multiple network devices and each network device may include a different number of terminal devices within its coverage area, and this embodiment of the present application does not limit this.

[0095] The network device 110 may be a device that communicates with the terminal device 120 (or referred to as a communication terminal or terminal). The network device 110 may provide communication coverage for a specific geographical area and may communicate with terminal devices within the coverage area.

[0096] The communication system 100 may be a long term evolution (LTE) system, an LTE frequency division duplex (FDD) system, an LTE time division duplex (TDD) system, a universal mobile telecommunication system (UMTS), a 5G communication system, a new radio (NR), or other evolved communication systems.

[0097] The network device 110 can be a transmission reception point (TRP), an evolved NodeB (eNB or eNodeB) in an LTE system, a home base station (for example, home evolved NodeB, or home Node B, HNB), a base band unit (BBU), or a wireless controller in a cloud radio access network (CRAN) scenario, or the network device can be a relay station, an access point, a vehicle-mounted device, a wearable device, and an access network device in a 5G network or an access network device in a future evolved public land mobile network (PLMN) network, etc. It can be an access point (AP) in a WLAN, or a gNB in ​​a new radio (NR) system, and the embodiments of the present application are not limited thereto. In a network structure, the access network device may include a centralized unit (CU) node, a distributed unit (DU) node, or a RAN device including a CU node and a DU node, or a RAN device including a control plane CU node (CU-CP node) and a user plane CU node (CU-UP node) and a DU node.

[0098] The embodiments of this application do not limit the specific technology and specific device form used by the network device. For the convenience of description, in all embodiments of this application, the above-mentioned device providing wireless communication function for terminal devices is collectively referred to as a network device.

[0099] The terminal device 120 may be a device that provides voice or data connectivity to a user, for example, a handheld device or a vehicle-mounted device with a wireless connection function. At present, some examples of terminals are: mobile phones, tablet computers, laptop computers, PDAs, mobile internet devices (MIDs), wearable devices, virtual reality (VR) devices, augmented reality (AR) devices, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical surgery, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, cellular phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs), handheld devices with wireless communication capabilities, computing devices or other processing devices connected to wireless modems, vehicle-mounted devices, wearable devices, terminal devices in 5G networks or future evolved public land mobile communication networks (PLMNs). Mobile network, PLMN) and other terminal devices, etc., the embodiments of the present application are not limited to this.

[0100] As an example and not a limitation, in the embodiment of the present application, the terminal device may also be a wearable device. Wearable devices may also be called wearable smart devices, which are a general term for wearable devices that are intelligently designed and developed using wearable technology for daily wear, such as glasses, gloves, watches, clothing, and shoes. A wearable device is a portable device that is worn directly on the body or integrated into the user's clothes or accessories. Wearable devices are not only hardware devices, but also achieve powerful functions through software support, data interaction, and cloud interaction. Broadly speaking, wearable smart devices include those that are fully functional, large in size, and can achieve complete or partial functions without relying on smartphones, such as smart watches or smart glasses, as well as those that only focus on a certain type of application function and need to be used in conjunction with other devices such as smartphones, such as various smart bracelets and smart jewelry for vital sign monitoring.

[0101] In addition, in the embodiment of the present application, the terminal device can also be a terminal device in the Internet of Things (IoT) system. IoT is an important part of the future development of information technology. Its main technical feature is to connect objects to the network through communication technology, thereby realizing an intelligent network of human-machine interconnection and object-to-object interconnection.

[0102] The terminal devices in the embodiments of the present application may also be referred to as user equipment (UE), mobile station (MS), mobile terminal (MT), access terminal, subscriber unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, or user device. The network device 110 and the terminal device 120 may be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; may also be deployed on water; and may also be deployed in the air on aircraft, balloons, and artificial satellites. The embodiments of the present application do not limit the application scenarios of the network device 110 and the terminal device 120.

[0103] It should be understood that the device with communication function in the network / system in the embodiment of the present application can be called a communication device. Figure 1 Taking the communication system 100 shown as an example, the communication equipment may include a network device 110 and a terminal device 120 with communication functions. The network device 110 and the terminal device 120 may be the specific devices described above and will not be repeated here; the communication equipment may also include other devices in the communication system 100, such as a network controller, a mobile management entity and other network entities, which is not limited in the embodiments of the present application.

[0104] In an embodiment of the present application, a terminal device or each network device includes a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer. The hardware layer includes hardware such as a central processing unit (CPU), a memory management unit (MMU), and memory (also called main memory). The operating system can be any one or more computer operating systems that implement business processing through processes, such as a Linux operating system, a Unix operating system, an Android operating system, an iOS operating system, or a Windows operating system. The application layer includes applications such as browsers, address books, word processing software, and instant messaging software. In addition, the embodiment of the present application does not specifically limit the specific structure of the execution subject of the method provided in the embodiment of the present application. As long as it is possible to communicate according to the method provided in the embodiment of the present application by running a program that records the code of the method provided in the embodiment of the present application, for example, the execution subject of the method provided in the embodiment of the present application can be a network device, or a functional module in the network device that can call and execute a program.

[0105] In addition, various aspects or features of the present application can be implemented as methods, apparatus, or articles of manufacture using standard programming and / or engineering techniques. The term "article of manufacture" as used in this application covers computer programs that can be accessed from any computer-readable device, carrier, or medium. For example, computer-readable media may include, but are not limited to: magnetic storage devices (e.g., hard disks, floppy disks, or magnetic tapes, etc.), optical disks (e.g., compact discs (CDs), digital versatile discs (DVDs), etc.), smart cards, and flash memory devices (e.g., erasable programmable read-only memories (EPROMs), cards, sticks, or key drives, etc.). In addition, the various storage media described herein may represent one or more devices and / or other machine-readable media for storing information. The term "machine-readable medium" may include, but is not limited to, wireless channels and various other media capable of storing, containing, and / or carrying instructions and / or data.

[0106] In a communication system, network devices can transmit multiple messages on the same time-frequency resources. When receiving messages, terminal devices may receive interference information. The communication methods in the embodiments of this application are specifically applied to suppress interference information in a communication system. The following describes scenarios in which interference information exists in some communication systems in the embodiments of this application.

[0107] For example, Figure 2 As shown, Figure 2A schematic diagram of interference information in the first downlink communication provided in an embodiment of the present application. The communication system 200 may include a network device 210, a terminal device 220, and a terminal device 230. The network device 210 sends two different pieces of information to the terminal device 220 and the terminal device 230 on the same time-frequency resources. For example, the network device 210 sends a first piece of information to the terminal device 220, and the network device 210 sends a second piece of information to the terminal device 230. When the terminal device 220 receives the first piece of information, it also receives the second piece of information. The first piece of information and the second piece of information interfere with each other. For the terminal device 220, the second piece of information is interference information. Similarly, for the terminal device 230, the first piece of information is interference information. It will be understood that the communication system 200 may include multiple network devices and that each network device may include other numbers of terminal devices within its coverage area, and this embodiment of the present application does not limit this.

[0108] For example, Figure 3 As shown, Figure 3 A schematic diagram of interference information in the second downlink communication provided in an embodiment of the present application. The communication system 300 may include a network device 310, a network device 320, a terminal device 330, and a terminal device 340. On the same time-frequency resource, the network device 310 sends downlink information to the terminal device 330, and the network device 320 in another adjacent area receives uplink information from the terminal device 340. When receiving the downlink information, the terminal device 330 also receives the uplink information sent by the terminal device 340. For the terminal device 330, the uplink information is interference information. It will be understood that the communication system 300 may include multiple network devices and that the coverage range of each network device may include other numbers of terminal devices, and the embodiments of the present application do not limit this.

[0109] For example, Figure 4 As shown, Figure 4 A schematic diagram of interference information in the third downlink communication provided in an embodiment of the present application. The communication system 400 may include a network device 410, a terminal device 420, and a terminal device 430. The network device 410 is a full-duplex network device, that is, the network device 410 can simultaneously send and receive on the same frequency domain resources. When the network device 410 sends downlink information to the terminal device 420, the terminal device 430 sends uplink information to the network device 410. When receiving the downlink information, the terminal device 410 will receive the uplink information sent by the terminal device 430. For the terminal device 410, the uplink information is interference information. It will be understood that the communication system 400 may include multiple network devices and that the coverage range of each network device may include other numbers of terminal devices, and the embodiments of the present application are not limited to this.

[0110] In communication systems, multiple access typically uses orthogonal frequency division multiplexing access (OFDMA). OFDMA's key feature is that it divides transmission resources into orthogonal time-frequency resource elements (REs). Signals from the transmitter are carried on these REs and transmitted to the receiver. Because the REs are orthogonal to each other, the receiver can independently receive the signal from each RE.

[0111] Due to the fading characteristics of wireless channels, signals carried by REs are distorted after transmission through the wireless channel. This distortion is often referred to as the channel coefficient. To recover the signal at the receiving end, the channel coefficient must be estimated. For example, the transmitter transmits a known signal on a specific RE. The receiver estimates the channel coefficient based on the received signal and the known signal. Furthermore, the receiver can use this estimated channel coefficient to interpolate the channel coefficients of other REs and demodulate the data signal using the estimated channel coefficients.

[0112] For example, the transmitting end is the base station end, and the receiving end is the terminal device. The base station end is equipped with multiple antennas to adopt multi-input multi-output (MIMO) technology to realize spatial multiplexing transmission, that is, multiple data streams are transmitted on the same time-frequency resources, each data stream is transmitted on an independent spatial layer, and each spatial layer can be mapped to a different antenna port and sent to different terminals. The channel coefficients from different antenna ports on the base station end to each terminal are not the same. In order for the terminal to obtain information transmitted on multiple spatial layers, it is necessary to estimate the channel coefficients between each antenna port on the base station end and the terminal. Therefore, it is necessary to configure different DMRS for each antenna port. The DMRS corresponding to different antenna ports can be multiplexed using time division, frequency division, and code division.

[0113] In a possible implementation, any terminal can determine whether DMRS ports other than the DMRS port used by the terminal to transmit information are occupied based on fields in downlink control information (DCI) sent by the base station. If the other DMRS ports are occupied, the information transmitted on the other DMRS ports may interfere with the information transmitted by the terminal. The terminal needs to perform channel estimation on all DMRS ports to obtain channel coefficients for all DMRS ports. Based on the obtained channel coefficients for each DMRS port, the terminal selects the DMRS port with stronger interference for interference suppression.

[0114] However, the channel estimation capabilities of terminal devices are different. It may happen that the channel estimation capabilities of the terminal device are insufficient to detect all DMRS ports, resulting in failure to perform channel estimation on the DMRS ports with stronger interference, failure to obtain the channel coefficients corresponding to the DMRS ports with stronger interference, and inability to perform interference suppression on the DMRS ports with stronger interference, resulting in poor interference suppression effect of the terminal.

[0115] Based on this, an embodiment of the present application provides a communication method, in which the terminal device reports the channel estimation capability by sending indication information, so that the network device configures the reference signal port according to the channel estimation capability of the terminal device, thereby reducing the situation where the terminal device cannot perform channel estimation on all reference signal ports, so that the terminal device can determine all interference signals and suppress them, thereby improving the interference suppression effect of the terminal device.

[0116] To facilitate understanding of the embodiments of the present application, some of the terms involved in the present application are first briefly explained.

[0117] 1. Wireless channel: A data signal transmission channel that uses wireless signals as the transmission medium. It is a figurative metaphor for the path between the sender and receiver in wireless communication and can be used for information transmission between network devices and terminal devices.

[0118] 2. Channel coefficient: The wireless channel has fading characteristics. The signal carried by the time-frequency resource element (RE) is distorted after transmission through the channel. This channel distortion is called the channel coefficient.

[0119] 3. Channel estimation: The process of estimating channel coefficients from received signals. For example, a reference signal-based scheme can be used for channel estimation. For example, the transmitter transmits a known signal on a specific reference element (RE). The receiver estimates the channel coefficients based on the received signal and the known signal.

[0120] 4. Antenna Port: In the 5G NR system, an antenna port is a logical port used for transmission. An antenna port includes multiple physical antennas. From the perspective of the receiver, each antenna port corresponds to an independent wireless channel.

[0121] 5. Demodulation reference signal (DMRS): A reference signal used to recover the received signal. Based on the received signal and the known DMRS signal, the receiving end can determine the fading characteristics of the wireless channel (i.e., the channel coefficient of the wireless channel) and recover the received signal. In the 5G NR system, considering that the channel coefficients from different antenna ports to the terminal are not the same, in order for the receiving end to obtain information transmitted on multiple spatial layers, it is necessary to estimate the channel coefficients between each antenna port and the terminal. Therefore, it is necessary to configure a different DMRS for each antenna port. The DMRS corresponding to different antenna ports can be multiplexed using time division, frequency division, and code division. Currently, the 5G NR system can support a maximum of 12 DMRS ports.

[0122] For example, Figure 5 A schematic diagram of a 5G DMRS pattern provided in an embodiment of the present application. Figure 5 As shown in the figure, the horizontal direction represents the time domain, the vertical direction represents the frequency domain, and each small square represents an RE. DMRS port 0 and DMRS port 1 correspond to REs 0, 1, 6, and 7, and signals are transmitted simultaneously and on the same frequency on these four REs. DMRS port 2 and DMRS port 3 correspond to REs 2, 3, 8, and 9, and signals are transmitted simultaneously and on the same frequency on these four REs. DMRS port 4 and DMRS port 5 correspond to REs 4, 5, 10, and 11, and signals are transmitted simultaneously and on the same frequency on these four REs. Figure 5 108 REs form a resource block, which carries control information and data information.

[0123] 6. Code Division Multiplexing (CDM): Also known as orthogonal multiplexing, this multiplexing method uses different codes to distinguish the original signals. Codes have the mathematical properties of large autocorrelation values ​​and small cross-correlation values, which terminal devices can use to distinguish and select the original signals.

[0124] like Figure 5 As shown, DMRS port 0 and DMRS port 1 are multiplexed through orthogonal codes, and the REs corresponding to these two ports are called a CDM group. Figure 5 REs 0, 1, 6, and 7 form a CDM group, that is, DMRS port 0 and DMRS port 1 correspond to one CDM group. Figure 5 In the example, the total number of DMRS ports is 6 and the number of CDM groups is 3.

[0125] 7. Time unit: This can be a time slot, subframe, symbol, or other time units defined in the future. Note that a time unit is a unit of measurement in the time domain and is not necessarily the smallest time unit.

[0126] It is understandable that the description of time slots in the following embodiments may also be replaced by other time units, such as subframes, symbols, etc. The embodiments of the present application are not limited to this.

[0127] 8. Subcarrier: Divide the frequency domain resources into several sub-resources. Each sub-resource in the frequency domain can be called a subcarrier. Subcarrier can also be understood as the minimum granularity of frequency domain resources;

[0128] 9. Resource block: A resource block includes N consecutive subcarriers in the frequency domain. For example, a resource block in the LTE system includes 12 subcarriers, and a resource block in the NR system in 5G also includes 12 subcarriers. As the communication system evolves, the number of subcarriers included in a resource block can also be other values;

[0129] 10. Spatial layer: In wireless communication systems, base stations are equipped with multiple antennas to implement spatial multiplexing transmission using multiple-input multiple-output (MIMO) technology. This technology transmits multiple unrelated data streams on the same time-frequency resources. Each unrelated data stream is transmitted on a separate spatial layer, and each spatial layer is mapped to a different antenna port for transmission.

[0130] 11. Detecting a DMRS port: The terminal device can determine the time-frequency resource of the DMRS signal corresponding to the DMRS port based on the DMRS port index, receive the DMRS signal on the time-frequency resource, and perform detection or channel estimation on the DMRS signal to determine the channel coefficient of the channel corresponding to the signal associated with the DMRS port. Therefore, detecting a DMRS port can also be referred to as determining the channel coefficient corresponding to the DMRS port.

[0131] 12. Interference Signal: In a communication system, for a certain terminal device, in addition to the signal sent by the network device to the terminal device, the received downlink signal may also contain other signals that the terminal device does not want to receive. For example, when a first terminal device is communicating with a first network device, when the first terminal device receives the downlink signal sent by the first network device on a time-frequency resource, there may be an uplink signal sent by a second terminal device or a downlink signal sent by the second network device on the same time-frequency resource. The uplink signal from the second terminal device or the downlink signal from the second network device are both signals that the first terminal device does not want to receive, and can also be understood as interference signals.

[0132] The communication method provided in the embodiments of the present application will be described in detail below with reference to the accompanying drawings. Figure 6 A flow chart of a communication method provided by this application is shown as follows: Figure 6 As shown, the method of the embodiment of the present application is as follows:

[0133] S601. The terminal device determines first indication information, wherein the first indication information is used to indicate a first parameter, and the first parameter is used to indicate the maximum number of times the terminal device detects a first reference signal port on a first time-frequency resource to receive at least one first signal from a network device within a first time period, wherein the first time-frequency resource is part or all of the time-frequency resource that carries at least one first signal.

[0134] In the embodiment of the present application, the first signal may be a downlink signal received by the terminal device from the network device. The first signal may be carried in a physical downlink shared channel (PDSCH).

[0135] In an embodiment of the present application, the first time period may include one or more orthogonal frequency division multiplexing (OFDM) symbols, or may include one or more time slots, or may include one or more subframes. The embodiment of the present application does not specifically limit the time length represented by the first time period. In one possible implementation, the number of OFDM symbols, the number of time slots, or the number of subframes included in the first time period may be known to the network device and the terminal device.

[0136] It should be understood that within the first time period, the terminal device can receive one or more first signals from the network device. For example, when the first time period is a time slot, when the PDSCH resource mapping type is Type A, the terminal device can receive one first signal within the first time period; when the PDSCH resource mapping is Type B, the terminal device can receive multiple first signals within the first time period, and the number of OFDM symbols included in the time domain resource corresponding to the first signal is less than the number of OFDM symbols included in a time slot. It can be understood that the embodiment of the present application can determine the time domain size of the first time-frequency resource through the first time period.

[0137] In an embodiment of the present application, the first time-frequency resource is part or all of the time-frequency resource that carries at least one first signal. It should be understood that in order to receive at least one first signal in the first time period, the terminal device needs to detect the first reference signal port on all or part of the time-frequency resource that carries at least one first signal. When the maximum number of times the terminal device detects the DMRS port in the first time period corresponding to the first parameter is equal to the number of times the terminal device detects the first reference signal port on the part of the time-frequency resource corresponding to at least one first signal, the terminal device cannot detect the first reference signal port on all of the time-frequency resource corresponding to the at least one first signal, and thus the first time-frequency resource is part of the time-frequency resource that carries at least one first signal. When the maximum number of times the terminal device detects the DMRS port in the first time period corresponding to the first parameter is equal to the number of times the terminal device detects the first reference signal port on all of the time-frequency resource corresponding to at least one first signal, the terminal device can detect the first reference signal port on all of the time-frequency resource corresponding to at least one first signal, and thus the first time-frequency resource is all of the time-frequency resource that carries at least one first signal.

[0138] In the embodiment of the present application, the first reference signal may be a DMRS or other reference signal, which is not limited in the embodiment of the present application. The first reference signal port may be a DMRS port or other reference signal port, which is not limited in the embodiment of the present application.

[0139] In an embodiment of the present application, a first parameter is used to indicate the maximum number of times a terminal device can perform channel estimation or detection on a reference signal port on a first time-frequency resource to receive a first signal within a first time period. The first parameter can quantitatively describe the channel estimation capability of the terminal device or the ability of the terminal device to detect the first reference signal port. A larger value of the first parameter indicates a stronger channel estimation capability of the terminal device and a stronger ability of the terminal device to detect the first reference signal port.

[0140] It should be noted that the channel estimation process corresponds to the process of detecting the reference signal port, and the channel estimation capability may also be the reference signal port detection capability. The embodiment of the present application does not limit this expression.

[0141] It should be understood that the first parameter is fixed during the first time period and does not change with the number of at least one first signal received by the terminal device during the first time period. In other words, the terminal device determines the first parameter, which is limited by the hardware, chip, and other resources allocated by the terminal device to the port for detecting the first reference signal. It can be a fixed value predetermined by the terminal device during the first time period.

[0142] It should be noted that the first indication information may be a newly defined message, or an existing message when the terminal device communicates with the network device, and the first parameter is added to the message. This embodiment of the present application does not specifically limit this.

[0143] Optionally, the first indication information may indicate the first parameter in the form of an index, where the index indicated by the first indication information corresponds to one or more values ​​of the first parameter.

[0144] S602: The terminal device sends first indication information to the network device.

[0145] Suitably, the network device receives first indication information from the terminal device.

[0146] In an embodiment of the present application, the terminal device sends a first indication message to the network device to report its channel estimation capability, so that the subsequent network device can determine the number of terminals using the same time-frequency resources to transmit signals based on the channel estimation capability, so that the terminal device with weak channel estimation can detect and suppress most or all interference, and give full play to its interference suppression capability.

[0147] In a possible implementation, the first indication information is carried in a physical uplink shared channel.

[0148] In an embodiment of the present application, the terminal device may send the first indication information multiple times or only once. This embodiment of the present application is not limited to this. For example, the terminal device may perform this step before each downlink signal is received to report its channel estimation capability to facilitate subsequent network device configuration signals. The terminal device may also perform this step only once after accessing the communication system to reduce the signaling overhead of the terminal device. The terminal device may also perform this step after changing the connected network device to report its channel estimation capability to the replaced network device.

[0149] S603: The network device determines a first parameter according to the first indication information.

[0150] In the embodiment of the present application, the network device can obtain the first parameter by parsing the first indication information.

[0151] The network device can determine whether the channel estimation capability of the terminal device is limited through the first parameter, and then determine multiple signals in the time-frequency resources.

[0152] For example, when the network device determines that the channel estimation capability of the terminal device is limited, the network device can reduce the number of terminals that transmit signals simultaneously and at the same frequency on the time-frequency resources where the first signal is located, that is, reduce the number of interference signals transmitted simultaneously and at the same frequency on the time-frequency resources where the first signal is located, thereby reducing the number of times the terminal device needs to perform channel estimation on the DMRS port associated with the interference signal.

[0153] In summary, the terminal device in the embodiment of the present application reports the channel estimation capability by sending indication information, so that the network device configures the reference signal ports on the same time-frequency resources according to the channel estimation capability of the terminal device, thereby reducing the situation where the terminal device is unable to perform signal estimation on all reference signal ports and causing transmission performance loss. For example: the network device determines multiple interference signals on the same time-frequency resources according to the channel estimation capability of the terminal device, and then configures the reference signal ports corresponding to the multiple interference signals, thereby reducing the situation where the terminal device is unable to perform channel estimation on all reference signal ports, so that the terminal device can determine all interference signals and suppress them, thereby improving the interference suppression effect of the terminal device.

[0154] Optional, in Figure 6 Based on the corresponding embodiment, in a possible implementation, due to different implementation modes of the terminal device and the adopted channel estimation algorithm, the first parameter may be in the following forms:

[0155] Method 1: The first parameter includes the maximum total number of times that the terminal device detects the first reference signal port in the resource group in the first time-frequency resource on all antennas of at least one antenna used by the terminal device to receive at least one first signal within a first time period.

[0156] It should be understood that in method one, the first parameter indicates the ability of the terminal device to detect the reference signal port, or it can be said that the first parameter indicates the channel estimation capability of the terminal device. The ability of the terminal device to detect the reference signal port may be related to the number of receiving antennas of the terminal device, the number of resource groups in the first time-frequency resource, and the number of first reference ports detected on each resource group in the first time-frequency resource. Therefore, in order to receive at least one first signal within the first time period, the terminal device detects the first reference signal port for the resource group on the first time-frequency resource on all antennas used, and the maximum value of the total number of times the terminal device detects the first reference signal port may be the first parameter.

[0157] In mode 2, the first parameter includes a maximum total number of times that the terminal device detects the first reference signal port for all resource groups in the first time-frequency resource on any antenna of at least one antenna used by the terminal device to receive the at least one first signal in the first time period;

[0158] It can be understood that since the terminal device can allocate a separate resource for each antenna to detect the reference signal port, the ability of the terminal device to detect the reference signal port may be independent of the number of receiving antennas used by the terminal device, that is, in order to receive at least one first signal in the first time period, the terminal device detects the first reference signal port for all resource groups in the first time-frequency resource on any of the at least one antenna used by the terminal device to receive at least one first signal, and the maximum total number of times does not change with the number of receiving antennas used by the terminal device. Therefore, in order to receive at least one first signal in the first time period, the terminal device detects the first reference signal port for the resource group on the first time-frequency resource on any antenna used, and the maximum total number of times the terminal device detects the first reference signal port may be the first parameter.

[0159] Mode three, the first parameter includes a maximum total number of times that the terminal device detects the first reference signal port on all antennas of at least one antenna used by the terminal device to receive the at least one first signal for any resource group in the first time-frequency resource in the first time period to receive the at least one first signal;

[0160] It can be understood that, due to the different implementation methods and channel estimation algorithms used by the terminal device, the ability of the terminal device to detect the reference signal port may be independent of the number of resource groups included in the first time-frequency resource. That is, in order to receive at least one first signal in the first time period, the terminal device detects the first reference signal port for any resource group in the first time-frequency resource on all antennas in at least one antenna used by the terminal device to receive at least one first signal, and the maximum total number of times the first reference signal port is detected does not vary with the number of resource groups included in the first time-frequency resource. Therefore, in order to receive at least one first signal in the first time period, the terminal device detects the first reference signal port for any resource group in the first time-frequency resource on all antennas used, and the maximum total number of times the terminal device detects the first reference signal port can be the first parameter.

[0161] Method 4: The first parameter includes the maximum number of first reference signal ports detected by the terminal device for any resource group in the first time-frequency resource in order to receive at least one first signal within the first time period.

[0162] It can be understood that, due to the different implementation methods and channel estimation algorithms used by the terminal device, the ability of the terminal device to detect the reference signal port may be independent of the number of receiving antennas of the terminal device and the number of resource groups included in the first time-frequency resource. That is, in order to receive at least one first signal in the first time period, the terminal device detects the maximum number of first reference signal ports for any resource group in the first time-frequency resource, which does not change with the number of receiving antennas of the terminal device and the number of resource groups included in the first time-frequency resource. In order to receive at least one first signal in the first time period, the terminal device detects the first reference signal port for any resource group in the first time-frequency resource, and the maximum total number of times the terminal device detects the first reference signal port may be the first parameter.

[0163] Optionally, in another possible implementation, the first parameter can be expressed in the following ways.

[0164] Method five, the first parameter includes a first value, wherein the first value is, when the number of at least one antenna used by the terminal device to receive at least one first signal is a second value, and the terminal device receives at least one first signal within a first time period, on any one of the at least one antenna used by the terminal device to receive at least one first signal, for all resource groups in the first time-frequency resource, the maximum total number of times the first reference signal port is detected.

[0165] In an embodiment of the present application, the second value is the number of antennas used by the terminal device when receiving the first signal. The second value may be predefined, for example, as specified in a standard, preset by a network device, or preset by the terminal device. The second value may also not be predefined. Exemplarily, the terminal device may indicate the second value by sending second indication information.

[0166] It can be understood that the terminal device detects the same number of times on multiple antennas used to receive signals. When the number of antennas used by the terminal device to receive the first signal is known, the first value can be the maximum total number of times the terminal device detects the first reference signal port on any antenna for all resource groups in the first time-frequency resource.

[0167] Exemplarily, the channel estimation capability of the terminal device is related to the number of antennas A used to receive signals, the number of resource groups B received on each antenna, and the number of reference signal ports on each resource block C. When A is the second value, the first value is B*C.

[0168] Method six, the first parameter includes a third value, wherein the third value is, when the number of resource groups in the first time-frequency resource is the fourth value, the terminal device detects the first reference signal port for any resource group in the first time-frequency resource in the first time period to receive at least one first signal, on all antennas of at least one antenna used by the terminal device to receive at least one first signal, for the maximum total number of times.

[0169] In this embodiment of the present application, the fourth value is the number of resource groups received by each antenna of the terminal device. The fourth value may be predefined, for example, specified in a standard, preset by a network device, or preset by the terminal device. The fourth value may also not be predefined. For example, the terminal device may indicate the fourth value by sending second indication information.

[0170] It is understandable that the terminal device detects each resource group the same number of times when the number of resource groups included in the first time-frequency resource is known. The third value is the maximum total number of times the terminal device detects the first reference signal port for any resource group in the first time-frequency resource on all used antennas.

[0171] Exemplarily, the channel estimation capability of the terminal device is related to the number of antennas A used to receive signals, the number of resource groups received on each antenna B, and the number of reference signal ports on each resource block C. When B is the fourth value, the third value is A*C.

[0172] Mode seven, the first parameter includes a fifth value, where the fifth value is, when the terminal device receives at least one first signal in the first time period, on any one of the at least one antenna used by the terminal device for receiving the at least one first signal, for any resource group in the first time-frequency resource, under the condition that the number of first reference signal ports detected is a sixth value, the maximum value of the product of the number of at least one antenna and the number of resource groups included in the first time-frequency resource;

[0173] In an embodiment of the present application, the sixth value is the number of reference signal detection ports of the terminal device in each resource group. The sixth value may be predefined, for example, specified in a standard, preset by a network device, or preset by the terminal device. The sixth value may also not be predefined. Exemplarily, the terminal device may indicate the sixth value by sending second indication information.

[0174] It can be understood that when the terminal device detects the same number of reference signal ports in each resource group, the first parameter is represented as the maximum value of the product of the number of at least one antenna and the number of resource groups included in the first time-frequency resource.

[0175] Exemplarily, the channel estimation capability of the terminal device is related to the number of antennas A used to receive signals, the number of resource groups received on each antenna B, and the number of reference signal ports on each resource block C. When C is the sixth value, the fifth value is A*B.

[0176] Method eight, the first parameter includes a seventh value, wherein the seventh value is, when the number of at least one antenna used by the terminal device for receiving at least one first signal is an eighth value, and on any antenna of the at least one antenna used by the terminal device for receiving at least one first signal, for any resource group in the first time-frequency resource, the number of first reference signal ports detected is a ninth value, the maximum number of resource groups included in the first time-frequency resource.

[0177] In this embodiment of the present application, the eighth value is the number of antennas for receiving signals. The eighth value may be predefined, for example, as specified in a standard, preset by a network device, or preset by a terminal device. The eighth value may also not be predefined. For example, the terminal device may indicate the eighth value by sending second indication information.

[0178] The ninth value is the number of reference signal ports included in each resource group. The ninth value may be predefined, for example, specified in a standard, preset by a network device, or preset by a terminal device. The ninth value may also not be predefined. Exemplarily, the terminal device may indicate the ninth value by sending second indication information.

[0179] When the eighth value and the ninth value are not predefined, the terminal device may indicate the eighth value and the ninth value by sending the second indication information.

[0180] It can be understood that when the terminal device detects the same number of times on multiple antennas used to receive signals and the terminal device detects the same number of times in each resource group, the first parameter is represented as the maximum value of the number of resource groups included in the first time-frequency resource.

[0181] Exemplarily, the channel estimation capability of a terminal device is related to the number A of antennas used to receive signals, the number B of resource groups received on each antenna, and the number C of reference signal ports on each resource block. When A is the eighth value and C is the ninth value, the seventh value is B.

[0182] Optionally, after S603, the process may further include: the network device determines the reference signal port according to the first parameter, and the terminal device determines the reference signal port to be detected according to the first parameter. Figure 7 A flow chart of a communication method provided in an embodiment of the present application is shown as follows: Figure 7 As shown, the method is as follows:

[0183] S701. A terminal device determines first indication information, wherein the first indication information is used to indicate a first parameter, and the first parameter is used to indicate a maximum number of times that the terminal device detects a first reference signal port on a first time-frequency resource to receive at least one first signal from a network device within a first time period.

[0184] S702. The terminal device sends first indication information to the network device.

[0185] Suitably, the network device receives first indication information from the terminal device.

[0186] S703: The network device determines a first parameter according to the first indication information.

[0187] S704: The terminal device sends second indication information to the network device.

[0188] Suitably, the network device receives second indication information from the terminal device.

[0189] The terminal device sends second indication information to the network device, wherein the second indication information indicates any one of the second value, the fourth value, the sixth value, the eighth value or the ninth value, or the second indication information indicates the eighth value and the ninth value.

[0190] It should be noted that the terminal device can execute S702 and S704 simultaneously. The terminal device can also execute S704 before executing S702. The embodiment of the present application does not specifically limit the execution time of S704.

[0191] S705. The network device determines the second time-frequency resource and the terminal device to receive the first signal based on the first parameter, and detects the first maximum value of the number of first reference signal ports for any resource group in the second time-frequency resource, wherein the second time-frequency resource is part or all of the time-frequency resource corresponding to the first signal.

[0192] Optionally, the network device may determine a second time-frequency resource based on the first parameter, where the second time-frequency resource is part or all of the time-frequency resource corresponding to the first signal.

[0193] Optionally, the network device determines that the number of first reference signal ports associated with interference signals on other time-frequency resources except the second time-frequency resource in the time-frequency resources corresponding to the first signal is 0. That is, the number of interference signals on other time-frequency resources except the second time-frequency resource in the time-frequency resources corresponding to the first signal is 0. For example, the first signal is carried on resource groups 0, 1, 2, and 3, and the network device determines that the second time-frequency resource is resource groups 0, 1, and 2. The network device can simultaneously transmit the first signal and interference signals 0 and 1 on resource groups 0, 1, and 2, and only transmit the first signal on resource group 3.

[0194] It should be noted that the network device can determine whether the channel detection capability of the terminal device is limited based on the first parameter, and then determine the second time-frequency resource. Exemplarily, the network device can determine whether the channel detection capability of the terminal device is limited by comparing the first parameter with a preset threshold. When the first parameter is lower than the preset threshold, the network device determines that the terminal device is a terminal with limited detection capability, and the network device preferentially configures it in a time-frequency resource with fewer interference signals. At the same time, when the second time-frequency resource is part of the time-frequency resource corresponding to the first signal, the network device can determine that only the first signal exists on other time-frequency resources except the second time-frequency resource in the time-frequency resource corresponding to the first signal.

[0195] Optionally, the network device determines, based on the first parameter, that the terminal device is receiving the first signal, and detects a first maximum value of the number of first reference signal ports for any resource group in the second time-frequency resource. Depending on the implementation of the first parameter, there are several specific determination methods:

[0196] When the first parameter adopts method 1, the network device determines the first maximum value based on the first parameter, the number of receiving antennas of the terminal device, and the number of resource groups included in the second time-frequency resource. Exemplarily, the network device determines based on the first parameter that the maximum total number of times the terminal device detects the first reference signal port for all resource groups in the second time-frequency resource on all antennas of at least one antenna used by the terminal device to receive the first signal in the first time period is N1, the number of resource groups included in the second time-frequency resource is X, the number of receiving antennas of the terminal device is Y, and the network device determines the first maximum value to be N1 / X / Y.

[0197] When the first parameter adopts mode 2, the network device determines a first maximum value based on the first parameter and the number of resource groups included in the second time-frequency resource of the terminal device. Exemplarily, the network device determines, based on the first parameter, that in order for the terminal device to receive the first signal during the first time period, a maximum total number of times the first reference signal port is detected for all resource groups in the second time-frequency resource on any one of at least one antenna used by the terminal device to receive the first signal is N2, the number of resource groups included in the second time-frequency resource is X, and the first maximum value is N2 / X.

[0198] When the first parameter adopts mode 3, the network device determines a first maximum value based on the first parameter and the number of receiving antennas of the terminal device. Exemplarily, the network device determines based on the first parameter that, for any resource group in the second time-frequency resource, the terminal device, in order to receive the first signal during the first time period, a maximum total number of times the first reference signal port is detected on all antennas in at least one antenna used by the terminal device for receiving the first signal is N3, and the number of receiving antennas of the terminal device is Y. In this case, the first maximum value is N3 / Y.

[0199] When the first parameter adopts mode 4, the network device determines a first maximum value based on the first parameter, where the first maximum value is the number of first reference signal ports indicated by the first parameter. Exemplarily, the network device determines, based on the first parameter, that the maximum number of first reference signal ports detected by the terminal device for any resource group in the first time-frequency resource during the first time period to receive the first signal is N4, and the network device determines the first maximum value to be N4.

[0200] When the first parameter adopts method five, method six, method seven, or method eight, the network device can determine, based on the first parameter, the maximum total number of times that the terminal device detects the first reference signal port for all resource groups in the second time-frequency resource on all antennas of at least one antenna used by the terminal device to receive the first signal within the first time period, and determine the first maximum value based on the maximum value, the number of terminal device receiving antennas, and the number of resource groups included in the second time-frequency resource.

[0201] S706. When the first maximum value is less than the first threshold, the network device determines that the CDM group to which the reference signal port associated with the first signal belongs includes at least one second reference signal port, wherein the second reference signal port is a reference signal port associated with an interference signal carried on part or all of the resource groups in the second time-frequency resources.

[0202] In the embodiment of the present application, the interference signal may be a signal that interferes with the communication of the terminal device. The specific cause of the interference signal can be referred to Figure 2-Figure 4 The description will not be repeated here.

[0203] It should be noted that the interference signal can be divided into a strong interference signal and a weak interference signal according to the degree of interference with the communication. The interference signal described in the embodiment of the present application can be all interference signals (for example, including a strong interference signal and a weak interference signal), so that the subsequent terminal equipment can comprehensively suppress all interference signals. The interference signal described in the embodiment of the present application can also specifically refer to a strong interference signal (for example, an interference signal whose interference is greater than a certain interference threshold), so that the subsequent terminal equipment can only suppress the strong interference signal, saving the computing resources of the terminal equipment. The embodiment of the present application does not specifically limit the interference signal.

[0204] S706 takes the reference signal port as a DMRS port as an example, and may be specifically implemented as follows.

[0205] It should be noted that the reference signal port in the embodiment of the present application may also be other reference signal ports, which is not limited in the embodiment of the present application. Therefore, in the description after this step, the DMRS port may also be replaced by other reference signal ports.

[0206] Optionally, when the first maximum value is less than the first threshold, the network device determines that the CDM group to which the DMRS port associated with the first signal belongs includes at least one second DMRS port, wherein the second DMRS port is a DMRS port associated with the interference signal carried on part or all of the resource group in the second time-frequency resource.

[0207] Optionally, the first threshold value may be the number of DMRS ports corresponding to the second time-frequency resource. That is, the first threshold value is the number of DMRS ports included in the CDM group that does not carry data corresponding to the second time-frequency resource. Specifically, the first threshold value may be determined based on the DMRS pattern configured by the high-level parameters and the antenna port field in the DCI. For example, the DMRS pattern is determined based on the DMRS type and the maximum number of DMRS preamble symbols indicated by the high-level parameters. Further, the number of DMRS ports corresponding to the second time-frequency resource is determined based on the DMRS pattern and the antenna port field in the DCI. When the maximum number of DMRS preamble symbols is 1, the number of DMRS ports corresponding to any resource group in the second time-frequency resource may be determined based on the number of CDM groups that cannot be used to carry data indicated by the antenna port field. When the maximum number of DMRS preamble symbols is 2, the number of DMRS ports corresponding to any resource group in the second time-frequency resource may be determined based on the number of DMRS preamble symbols indicated by the antenna port field and the number of CDM groups that cannot be used to carry data. For example, if the DMRS type is determined to be type 1 according to high-level parameters, the maximum number of DMRS preamble symbols is 2, when the antenna port field in the DCI indicates that the number of preamble symbols is 1, and the number of CDM groups that cannot be used to carry data is 3, then the first threshold can be determined to be 4.

[0208] It should be noted that, when the first reference signal port is other reference signal ports, the first threshold may be the number of other reference signal ports corresponding to the second time-frequency resource.

[0209] It should be understood that if the first maximum value is less than the first threshold value, the terminal detection capability is limited. For terminal devices with limited detection capability, the network device preferentially determines the DMRS port associated with the first signal, and then the network device can determine that the DMRS port associated with the interference signal is in the CDM group where the DMRS port associated with the first signal is located. Exemplarily, if the DMRS port associated with the signal corresponding to the terminal device by the network device corresponds to CDM group 0, the network device preferentially associates the DMRS port in CDM group 0 with the interference signal. If the DMRS ports in CDM group 0 are not sufficient to associate all interference signals, or there are some interference signals that cannot be associated with the DMRS ports in CDM group 0, the interference signal is associated with the DMRS ports in the CDM groups other than CDM group 0.

[0210] It should be noted that, in a communication system, the DMRS ports included in the CDM group in the time-frequency resources are usually standardized. After determining the time-frequency resources, the network device can simultaneously determine the interference signal, and then determine the CDM group where the DMRS port associated with the interference signal is located. Furthermore, the network device can select a DMRS port for transmitting a downlink signal in the CDM group where the associated DMRS port is located, so that the DMRS port transmitting the first signal and the DMRS port associated with the interference signal can be located in the same CDM group. For example, Figure 5 As shown, CDM group 0 includes DMRS port 0 and DMRS port 1. CDM group 1 includes DMRS port 2 and DMRS port 3. If DMRS port 1 is associated with interference signal 1, and the DMRS port associated with interference signal 1 is in CDM group 0, DMRS port 0 can be selected in CDM group 0 for transmitting the first signal. If DMRS port 2 is associated with interference signal 1, and the DMRS port associated with interference signal 1 is in CDM group 1, DMRS port 3 can be selected in CDM group 1 for transmitting the first signal.

[0211] In the embodiment of the present application, description will be given by taking as an example that the CDM group to which the reference signal port associated with the first signal belongs is the CDM group corresponding to the DMRS port associated with the first signal.

[0212] The network device determines that the CDM group where the DMRS port associated with the first signal belongs includes at least one second DMRS port, wherein the second DMRS port is a DMRS port associated with the interference signal carried on part or all of the resource groups in the second time-frequency resources.

[0213] There are several optional implementations as follows:

[0214] In one possible implementation, when the number of interfering DMRS ports is less than or equal to the number of DMRS ports included in the CDM group where the DMRS port associated with the first signal is located (or it can be understood as the maximum number of DMRS ports that the CDM group can include), the network device determines that the CDM group where the DMRS port associated with the first signal is located can include all second DMRS ports, wherein the second DMRS port is the DMRS port associated with the interfering signal carried on part or all of the resource groups in the second time-frequency resources.

[0215] It is understandable that the network device preferentially associates the interference signal carried on some or all resource groups in the second time-frequency resource with other DMRS ports in the CDM group where the DMRS port associated with the first signal is located. In this way, the range of all interfering DMRS ports is limited, reducing the number of channel estimations performed by the terminal device and reducing signaling overhead.

[0216] For example, Figure 8 This is a schematic diagram of the first DMRS port configuration provided in the embodiment of the present application. Figure 8 As shown in the figure, there are 12 DMRS ports, numbered DMRS ports 0 to 11, divided into three CDM groups, numbered CDM groups 0 to 2. CDM group 0 includes DMRS port 0, DMRS port 1, DMRS port 6, and DMRS port 7. CDM group 1 includes DMRS port 2, DMRS port 3, DMRS port 8, and DMRS port 9. CDM group 2 includes DMRS port 4, DMRS port 5, DMRS port 10, and DMRS port 11. CDM group 0, CDM group 1, and CDM group 2 do not carry data.

[0217] like Figure 8 DMRS port 0 is the DMRS port associated when the network device sends the first signal to the terminal device, and the corresponding CDM group 0 is the CDM group where the reference signal port associated with the first signal is located. The other CDM groups are CMD group 1 and CMD group 2. Assuming that there are 3 interfering signals, the number of DMRS ports associated with the interfering signals is less than the number of DMRS ports contained in the CDM group where the reference signal port associated with the first signal is located. They are configured in the CDM where the reference signal port associated with the first signal is located, that is, Figure 8 DMRS port 1, DMRS port 6, and DMRS port 7 in CDM group 0.

[0218] In another possible implementation, when the number of second DMRS ports is greater than the number of DMRS ports included in the CDM group where the reference signal port associated with the first signal is located, the network device determines that the CDM group where the DMRS port associated with the first signal is located includes some second DMRS ports, wherein the second DMRS port is a DMRS port associated with the interference signal carried on part or all of the resource groups in the second time-frequency resources. In other words, the CDM group where the reference signal port associated with the first signal is located cannot include all DMRS ports associated with the interference signal, and among the DMRS ports associated with the interference signal, some DMRS ports are included in the CDM group where the reference signal port associated with the first signal is located, and the other part of the DMRS ports are included in other CDM groups.

[0219] It is understandable that when the CDM group corresponding to the DMRS port associated with the first signal includes insufficient DMRS ports to associate with all interference signals, the network device associates some interference signals with DMRS ports in other CDM groups. In this way, the range of DMRS ports associated with some interference signals is limited, reducing the number of channel estimations performed by the terminal device and reducing signaling overhead.

[0220] For example, Figure 9This is a schematic diagram of the second DMRS port configuration provided in the embodiment of the present application. Figure 9 As shown in the figure, there are 12 DMRS ports, numbered DMRS ports 0 to 11, divided into three CDM groups, numbered CDM groups 0 to 2. CDM group 0 includes DMRS port 0, DMRS port 1, DMRS port 6, and DMRS port 7. CDM group 1 includes DMRS port 2, DMRS port 3, DMRS port 8, and DMRS port 9. CDM group 2 includes DMRS port 4, DMRS port 5, DMRS port 10, and DMRS port 11. CDM group 0, CDM group 1, and CDM group 2 do not carry data.

[0221] like Figure 9 DMRS port 0 is the DMRS port associated with the first signal when the network device sends a downlink signal to the terminal device. The corresponding CDM group 0 is the CDM group where the reference signal port associated with the first signal is located, and the other CDM groups are CMD group 1 and CMD group 2. Assuming that there are 5 DMRS ports that interfere with the terminal device, the number of DMRS ports associated with the interference signal is greater than the number of DMRS ports contained in the CDM group where the reference signal port associated with the first signal is located, and the CDM group where the reference signal port associated with the first signal is located and other CDM groups are configured. For example, DMRS port 1, DMRS port 6 and DMRS port 7 are configured in CDM group 0, and DMRS port 2 and DMRS port 5 are configured in CDM group 1.

[0222] Optionally, when the number of second DMRS ports is greater than the number of DMRS ports included in the CDM group where the reference signal port associated with the first signal is located, the CDM group where the DMRS port associated with the first signal is located includes some second DMRS ports, wherein the part of the second DMRS ports are: DMRS ports associated with interference signals carried on part or all of the resource groups in the second time-frequency resources and where the power or intensity received by the terminal device in the second DMRS port is greater than the second threshold, or DMRS ports associated with interference signals carried on part or all of the resource groups in the second time-frequency resources in the second DMRS port and where the correlation with the DMRS port associated with the first signal is greater than a third threshold.

[0223] It should be noted that the network device may classify interference signals into strong interference signals and weak interference signals. A strong interference signal may be an interference signal whose power or strength received by the terminal device is greater than the second threshold. A weak interference signal may be an interference signal whose power or strength received by the terminal device is less than or equal to the second threshold.

[0224] That is to say, when the number of second DMRS ports is greater than the number of DMRS ports included in the CDM group where the reference signal port associated with the first signal is located, the CDM group where the DMRS port associated with the first signal is located includes all strong interference DMRS ports, wherein the strong interference DMRS port is a DMRS port associated with the interference signal carried on part or all of the resource groups in the second time-frequency resources and whose power or intensity received by the terminal device in the second DMRS port is greater than the second threshold, or a DMRS port associated with the interference signal carried on part or all of the resource groups in the second time-frequency resources and whose correlation with the DMRS port associated with the first signal is greater than the third threshold.

[0225] It should be noted that the greater the correlation between DMRS ports, the greater the interference intensity of the corresponding interference signal. The network device includes the DMRS ports associated with the interference signal whose correlation with the DMRS port associated with the first signal is greater than the third threshold in the CDM group where the reference signal port associated with the first signal is located, and limits the range of DMRS ports associated with the interference signal with greater interference intensity. The corresponding terminal device preferentially detects the DMRS port of the CDM group where the reference signal port associated with the first signal is located. In this way, the terminal device can preferentially detect the stronger interference signal and suppress it.

[0226] In another optional embodiment, the CDM group where the DMRS port associated with the first signal is located includes some second DMRS ports, wherein the part of the second DMRS ports are: DMRS ports associated with interference signals carried on some or all resource groups in the second time-frequency resources and where the power or intensity received by the terminal device in the second DMRS port is greater than the second threshold, or DMRS ports associated with interference signals carried on some or all resource groups in the second time-frequency resources in the second DMRS port where the correlation with the DMRS port associated with the first signal is greater than a third threshold.

[0227] It is understandable that the network device preferentially associates the strong interfering signal with the DMRS port in the CDM group where the reference signal port associated with the first signal is located, limiting the range of DMRS ports associated with the strong interfering signal. In this way, the terminal device can preferentially detect and suppress the strong interfering signal, fully utilizing the interference suppression capability of the terminal device.

[0228] For example, Figure 10 This is a schematic diagram of the third DMRS port configuration provided in the embodiment of the present application. Figure 10As shown in the figure, there are 12 DMRS ports, numbered DMRS ports 0 to 11, divided into three CDM groups, numbered CDM groups 0 to 2. CDM group 0 includes DMRS port 0, DMRS port 1, DMRS port 6, and DMRS port 7. CDM group 1 includes DMRS port 2, DMRS port 3, DMRS port 8, and DMRS port 9. CDM group 2 includes DMRS port 4, DMRS port 5, DMRS port 10, and DMRS port 11. CDM group 0, CDM group 1, and CDM group 2 do not carry data.

[0229] like Figure 10 As shown, if the DMRS port associated with the downlink signal sent by the network device to the terminal device is DMRS port 0, DMRS port 0 belongs to CDM group 0, that is, the CDM group to which the reference signal port associated with the first signal belongs is CDM group 0, and the other CDM groups are CDM group 1 and CDM group 2. The network device has five interference signals on the same time-frequency resources, numbered as interference signals 0-4. Among them, interference signal 1 and interference signal 3 are strong interference signals, and the DMRS ports associated with interference signal 1 and interference signal 3 are DMRS port 1 and DMRS port 6, that is, the DMRS port associated with the strong interference signal and the DMRS port associated with the first signal are located in the same CDM group 0. Since interference signal 0, interference signal 2 and interference signal 4 are weak interference signals, interference signal 0, interference signal 2 and interference signal 4 can be associated with DMRS port 2, DMRS port 5 and DMRS port 11, that is, the DMRS port associated with the weak interference signal can be included in other CDM groups.

[0230] It is understandable that when a network device uses the same resource block to send downlink signals to two or more terminals with limited channel detection capabilities, if the two downlink signals interfere with each other strongly, the DMRS ports associated with the two downlink signals are in the same CDM group. If the two downlink signals interfere with each other weakly, the DMRS ports associated with the two downlink signals may not be in the same CDM group. In this way, the strong interference signal can be configured to the terminal device to the maximum extent.

[0231] In a possible implementation, the CDM group where the reference signal port associated with the first signal is located and other CDM groups are CDM groups not used for transmitting data.

[0232] For example, there are three CDM groups in the resource block sent by the network device, namely CDM group 0, CDM group 1, and CDM group 2. CDM group 0 and CDM group 1 are CDM groups not used for data transmission, and CDM group 2 is a CDM group used for data transmission. When the network device sends a downlink signal to the terminal device, when the associated DMRS port is a DMRS port in CDM group 0, CDM group 0 is the CDM group where the reference signal port associated with the first signal is located, and CDM group 1 is the other CDM group.

[0233] S707: The network device sends third indication information to the terminal device.

[0234] Suitably, the terminal device receives third indication information from the network device.

[0235] In the embodiment of the present application, the third indication information is used to indicate the second time-frequency resource, so that the terminal device can easily determine the second time-frequency resource, receive the first signal, and demodulate to obtain the required information.

[0236] It should be noted that step S707 of the present embodiment is an optional step and whether to execute it can be determined based on the actual application scenario. The order of the steps in the present embodiment can also be adjusted based on the actual application scenario, and the present embodiment does not specifically limit this.

[0237] S708. The terminal device determines the reference signal port to be detected on the second time-frequency resource based on the first parameter; wherein, when the maximum number of the first reference signal ports detected by the terminal device for any resource group in the second time-frequency resource is less than the first threshold, the terminal device detects part or all of the reference signal ports in the CDM group where the reference signal port associated with the first signal is located on the second time-frequency resource, and the second time-frequency resource is part or all of the time-frequency resource that carries the first signal.

[0238] It should be noted that the terminal device determines the first threshold in the same manner as the network device in step S706. The terminal device determines the first maximum value in the same manner as the network device in step S705. This embodiment of the application is not described in detail here.

[0239] Optionally, when the second time-frequency resource is part of the time-frequency resource carrying the first signal, in the terminal device, for any resource group in the second time-frequency resource, if the maximum number of first reference signal ports detected is less than a first threshold, the terminal device detects the reference signal ports associated with the first signal on other time-frequency resources in the time-frequency resource carrying the first signal except the second time-frequency resource.

[0240] It should be noted that, in a common processing method, the terminal device has two channel estimation methods for illustration.

[0241] In the first approach, the terminal performs blind detection on all DMRS ports to estimate the channel coefficients of all DMRS ports, and selects a DMRS port with stronger interference for interference suppression based on the obtained channel coefficients of each DMRS port.

[0242] However, blind checking all DMRS ports requires a large number of blind checks, resulting in high complexity, high signaling overhead, and low interference suppression efficiency. In particular, when a terminal blind checks all DMRS ports on each resource block, the number of blind checks required by the terminal increases, along with the complexity and signaling overhead.

[0243] Furthermore, this approach requires high detection capabilities from the terminal, making it difficult to implement. Due to hardware or chip limitations, the number of blind detections is capped. When a terminal uses spatial division multiplexing (SDM) on a per-resource-block basis (e.g., MIMO SDM), it may not be possible to blindly detect all DMRS ports on all resource blocks.

[0244] For example, if the number of DMRS ports that a terminal can detect on each resource block (e.g., marked with N1) is 4, the number of resource blocks included in the initial bandwidth (e.g., marked with N2) is 20, and the number of receiving antennas of the terminal (e.g., marked with N3) is 4, the maximum number of blind detections (e.g., marked with N) that the terminal can support is 160. If 12 users are multiplexed and paired on the resource blocks, and each user transmits one stream of data, and the network device schedules 20 resource blocks for the terminal user to transmit data, the terminal needs to perform channel estimation for the 12 DMRS ports on each resource block received by each receiving antenna. In this case, the number of blind detections that the terminal needs to support (e.g., marked with N') is 960. The number of blind detections that the terminal needs to support is greater than the maximum number of blind detections of the terminal, so the terminal device cannot blindly detect all DMRS ports.

[0245] Method 2: When the terminal determines that other DMRS ports are occupied, the terminal randomly selects several DMRS ports for blind detection, estimates the channel coefficients of the randomly selected DMRS ports, and selects the DMRS ports with stronger interference for interference suppression based on the obtained channel coefficients of each DMRS port. However, the method of randomly selecting several DMRS ports for blind detection may select DMRS ports with weaker interference or DMRS ports without interference, thereby failing to select DMRS ports with stronger interference. As a result, the terminal does not obtain the channel coefficients corresponding to the DMRS ports with stronger interference, and is unable to suppress interference on the DMRS ports with stronger interference, resulting in poor interference suppression effect of the terminal.

[0246] In view of this, in an embodiment of the present application, when all the DMRS ports associated with the interference signal can be included in the CDM group where the reference signal port associated with the first signal is located, at least one DMRS port associated with the first signal is part or all of the DMRS ports in the CDM group where the reference signal port associated with the first signal is located; when, among the DMRS ports associated with the interference signal, some of the DMRS ports are included in the CDM group where the reference signal port associated with the first signal is located, and another part of the DMRS ports are included in other CDM groups, at least one first DMRS port includes the DMRS ports in the CDM group where the reference signal port associated with the first signal is located and the DMRS ports in other CDM groups.

[0247] Alternatively, it can be understood that when a terminal device detects at least one first DMRS port, the terminal device preferentially performs channel estimation on the DMRS port associated with the interference signal in the CDM group where the reference signal port associated with the first signal is located. When the detection capability of the terminal device is sufficient, the terminal device can also detect DMRS ports in other CDM groups.

[0248] In summary, in the embodiments of the present application, the network device preferentially configures terminals with limited channel estimation capabilities based on the first parameter, and preferentially associates the interference signal with the DMRS port of the CDM group where the reference signal port associated with the first signal is located. In this way, the terminal device detects the DMRS port of the CDM group, which can reduce the number of channel estimations performed by the terminal device and obtain the channel coefficients corresponding to most interference signals, thereby suppressing most interference signals.

[0249] It should be noted that, in the above embodiment, the network device configures the reference signal port according to the first parameter as an example. In specific applications, the network device can also configure the appropriate reference signal port for the terminal device without distinction, so that the terminal device can achieve a smaller number of detections and detect most interference signals.

[0250] The following is an introduction to the specific contents of the network device configuration port and the terminal device detection port. For example, Figure 11 As shown, the method includes:

[0251] S1101. The network device determines that a CDM group in which a reference signal port associated with a first signal is located includes at least one second reference signal port, wherein the second reference signal port is a reference signal port associated with an interference signal carried on a second time-frequency resource, and the second time-frequency resource is a time-frequency resource corresponding to the first signal.

[0252] In a possible implementation, the network device determines the number of reference signal ports associated with the interference signal, and further determines that the CDM group where the reference signal port associated with the first signal belongs includes at least one second reference signal port.

[0253] This embodiment takes the reference signal port as a DMRS port as an example, and the specific implementation method is as follows.

[0254] Optionally, the network device determines that the CDM group to which the DMRS port associated with the first signal belongs includes at least one second DMRS port, wherein the second DMRS port is a DMRS port associated with an interference signal carried on a second time-frequency resource, and the second time-frequency resource is a time-frequency resource corresponding to the first signal. It should be noted that in the embodiment of the present application, the reference signal port may also be other reference signal ports, which is not limited in the embodiment of the present application. Therefore, in the description after this step, the DMRS port may also be replaced by other reference signal ports.

[0255] Exemplarily, the network device may determine the number and / or location of DMRS ports associated with the interference signal by the number of interference signals, the received power of the interference signal, and / or information of other terminal devices associated with the interference signal (e.g., the channel detection capability of the terminal device). In a possible implementation, when transmitting multiple signals, the network device may configure signals with relatively low mutual interference to be transmitted in the same resource block to reduce interference between the multiple signals and rationally utilize resources.

[0256] The following describes a network device determining that a CDM group containing a reference signal port associated with a first signal includes at least one second reference signal port. For ease of description, the following description uses an example in which the first CDM group is a CDM group containing a DMRS port associated with the first signal, and the second DMRS port is a DMRS port associated with an interference signal carried on a second time-frequency resource.

[0257] In one possible implementation, when the number of second DMRS ports is less than or equal to the number of DMRS ports included in the first CDM group (or can be understood as the maximum number of DMRS ports that the first CDM group can include), the network device determines that the first CDM group includes all second DMRS ports, wherein the second DMRS port is the DMRS port associated with the interference signal carried on the second time-frequency resource.

[0258] In another possible implementation, when the number of second DMRS ports is greater than the number of DMRS ports included in the first CDM group, the network device determines that the first CDM group includes some of the second DMRS ports, where the second DMRS ports are DMRS ports associated with the interference signal carried on the second time-frequency resource. In other words, the first CDM group cannot include all of the second DMRS ports, and among the second DMRS ports, some of the DMRS ports are included in the first CDM group, and other DMRS ports are included in the second CDM group.

[0259] It should be noted that the network device can estimate relevant information of the interference signal, such as the receiving power or strength of the terminal device to the interference signal and the correlation between DMRS ports, etc. The network device can determine the second DMRS port position based on the estimated relevant information of the interference signal.

[0260] In another possible implementation, the network device determines that the first CDM group includes some second DMRS ports, wherein the some second DMRS ports are strong interfering DMRS ports among the DMRS ports associated with the interference signal carried on the second time-frequency resource. The strong interfering DMRS port is a DMRS port associated with the interference signal carried on some or all resource groups in the second time-frequency resource and whose power or intensity received by the terminal device in the second DMRS port is greater than a second threshold, or a DMRS port associated with the interference signal carried on some or all resource groups in the second time-frequency resource in the second DMRS port and whose correlation with the DMRS port associated with the first signal is greater than a third threshold.

[0261] In a possible implementation, both the first CDM group and the second CDM group are CDM groups not used for transmitting data.

[0262] For example, a resource block transmitted by a network device includes three CDM groups: CDM group 0, CDM group 1, and CDM group 2. CDM group 0 and CDM group 1 are CDM groups not used for data transmission, while CDM group 2 is a CDM group used for data transmission. When the network device transmits a downlink signal to a terminal device, and the associated DMRS port is a DMRS port in CDM group 0, CDM group 0 is the first CDM group, and CDM group 1 is the second CDM group.

[0263] S1102. The terminal device determines that the reference signal ports detected on the second time-frequency resource include part or all of the reference signal ports in the CDM group where the reference signal port associated with the first signal is located.

[0264] This embodiment takes the reference signal port as a DMRS port as an example, and the specific implementation method is as follows.

[0265] The terminal device determines that the DMRS ports detected on the second time-frequency resource include part or all of the DMRS ports in the CDM group where the DMRS port associated with the first signal is located.

[0266] It should be noted that the reference signal port in the embodiment of the present application may also be other reference signal ports, which is not limited in the embodiment of the present application. Therefore, in the description after this step, the DMRS port may also be replaced by other reference signal ports.

[0267] Optionally, the terminal device determines the DMRS port associated with the first signal. Exemplarily, the terminal device may determine the DMRS port associated with the first signal according to the antenna port field in the DCI.

[0268] It should be noted that, in a specific implementation, the terminal device may not actively perceive the DMRS port specifically included in the first CDM group, because the network device has determined that the second DMRS port is in the first CDM group. After the terminal device determines the first CDM group according to the instructions of the network device, it can perform channel estimation on the DMRS port in the first CDM group, and the second DMRS port can be detected in the first CDM group, thereby achieving better interference suppression.

[0269] In an embodiment of the present application, corresponding to two possible implementation methods of S1101, when the second DMRS ports can be completely included in the first CDM group, the DMRS ports detected by the terminal device are part or all of the DMRS ports in the first CDM group; when, among the second DMRS ports, a part of the DMRS ports are included in the first CDM group and another part of the DMRS ports are included in the second CDM group, at least one first DMRS port includes the DMRS ports in the first CDM group and the DMRS ports in the second CDM group.

[0270] Alternatively, it can be understood that when the terminal device detects the DMRS port, the terminal device preferentially detects the second DMRS port in the first CDM group. When the terminal device has sufficient detection capability, the terminal device can also detect the DMRS port in the second CDM group.

[0271] S1103. The network device sends a first signal to the terminal device.

[0272] Suitably, the terminal device receives a first signal sent by the network device.

[0273] In summary, in the embodiment of the present application, the network device preferentially limits the DMRS port associated with the interference signal to the range of the CDM group where the DMRS port associated with the first signal is located; accordingly, the terminal device preferentially detects the DMRS port of the first CDM group. In this way, the number of DMRS ports detected by subsequent terminal devices can be reduced, and the signaling overhead of the terminal device can be reduced, thereby giving full play to the detection capability and interference suppression capability of the terminal device. Compared with the method of randomly detecting DMRS ports, the method provided in the embodiment of the present application narrows the detection range of the DMRS port associated with the interference signal, thereby increasing the probability of the terminal device detecting the DMRS port associated with the interference signal, so that the terminal device can effectively suppress the interference signal and give full play to the interference suppression capability. In addition, this method can also reduce the signaling overhead of the terminal device and save computing resources.

[0274] Through the above introduction to the scheme of the present application, it can be understood that, in order to realize the above functions, the above-mentioned implementation devices include hardware structures and / or software units corresponding to the execution of each function. Those skilled in the art should easily realize that, in combination with the units and algorithm steps of each example described in the embodiments disclosed herein, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0275] Figure 12 This is a schematic diagram of the structure of a communication device provided by this application. Figure 12 The communication device includes a processor 1201, a memory 1202 and a transceiver 1203.

[0276] The processor 1201 is responsible for managing the bus architecture and general processing, and the memory 1202 can store data used by the processor 1201 when performing operations. The transceiver 1203 is used to receive and send data under the control of the processor 1201 to communicate data with the memory 1202.

[0277] The bus architecture can include any number of interconnected buses and bridges, specifically linking various circuits such as one or more processors represented by processor 1201 and memory represented by memory 1202. The bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, all of which are well known in the art and are not further described herein. The bus interface provides an interface. Processor 1201 is responsible for managing the bus architecture and general processing, while memory 1202 can store data used by processor 1201 when performing operations.

[0278] The processes disclosed in the embodiments of this application can be applied to or implemented by processor 1201. During implementation, each step of the communication method process can be completed by hardware integrated logic circuits or software instructions in processor 1201. Processor 1201 can be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field-programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, and can implement or execute the various methods, steps, and logic block diagrams disclosed in the embodiments of this application. A general-purpose processor can be a microprocessor or any conventional processor. The steps of the methods disclosed in conjunction with the embodiments of this application can be directly implemented and executed by a hardware processor, or by a combination of hardware and software modules in the processor. The software modules can be located in a storage medium well-known in the art, such as random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, etc. The storage medium is located in memory 1202, and processor 1201 reads the information in memory 1202 and, in conjunction with its hardware, completes the steps of the signal processing process. In an optional manner of the embodiment of the present application, the processor 1201 is used to read the program in the memory 1202 and execute the steps performed by the terminal device or network device in the above method embodiment. The implementation principle and technical effects are similar and will not be repeated here.

[0279] Figure 13 This is a schematic diagram of the structure of a chip provided in an embodiment of the present application. The chip includes one or more processors 1301 and an interface circuit 1302. Optionally, the chip may also include a bus 1303.

[0280] Among them, the processor 1301 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method can be completed by the integrated logic circuit of the hardware in the processor 1301 or the instruction in the form of software. The above-mentioned processor 1301 can be one or more of a general-purpose processor, a digital communicator (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, MCU, MPU, CPU or coprocessor. The various methods and steps disclosed in the embodiments of the present application can be implemented or executed. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor, etc.

[0281] The interface circuit 1302 can be used to send or receive data, instructions or information. The processor 1301 can use the data, instructions or other information received by the interface circuit 1302 to process it, and can send the processing completion information through the interface circuit 1302.

[0282] Optionally, the chip further includes a memory, which may include a read-only memory and a random access memory, and provides operating instructions and data to the processor. A portion of the memory may also include a non-volatile random access memory (NVRAM).

[0283] Optionally, the memory stores an executable software module or a data structure, and the processor can perform corresponding operations by calling an operation instruction stored in the memory (the operation instruction may be stored in an operating system).

[0284] Optionally, the chip can be used in the first device or the second device involved in the embodiments of the present application. Optionally, the interface circuit 1302 can be used to output the execution result of the processor 1301. Regarding the communication method provided in one or more embodiments of the present application, reference can be made to the aforementioned embodiments and will not be repeated here.

[0285] It should be noted that the corresponding functions of the processor 1301 and the interface circuit 1302 can be implemented through hardware design, software design, or a combination of hardware and software, and there is no limitation here.

[0286] An embodiment of the present application may also provide a communication device applied to a terminal device, the communication device comprising a communication unit and a processing unit. The processing unit is configured to determine first indication information, wherein the first indication information is configured to indicate a first parameter, and the first parameter is configured to indicate a maximum number of times that the terminal device detects a first reference signal port on a first time-frequency resource to receive at least one first signal from a network device within a first time period, wherein the first time-frequency resource is part or all of a time-frequency resource that carries the at least one first signal; and the communication unit is configured to send the first indication information to the network device.

[0287] Optionally, the first parameter includes the maximum total number of times that the terminal device detects the first reference signal port for all resource groups in the first time-frequency resource on all antennas of at least one antenna used by the terminal device to receive at least one first signal within the first time period.

[0288] Alternatively, the first parameter includes the maximum total number of times that the terminal device detects the first reference signal port for all resource groups in the first time-frequency resource on any one of at least one antenna used by the terminal device to receive at least one first signal within a first time period.

[0289] Alternatively, the first parameter includes the maximum total number of times that the terminal device detects the first reference signal port on all antennas of at least one antenna used by the terminal device to receive at least one first signal for any resource group in the first time-frequency resource in the first time period.

[0290] Alternatively, the first parameter includes the maximum number of first reference signal ports detected by the terminal device for any resource group in the first time-frequency resource in order to receive at least one first signal within the first time period.

[0291] Optionally, the first parameter includes a first value, wherein the first value is the maximum total number of times the terminal device detects the first reference signal port for all resource groups in the first time-frequency resource on any one of the at least one antenna used by the terminal device to receive at least one first signal in a first time period to receive at least one first signal when the number of at least one antenna used by the terminal device to receive at least one first signal is a second value.

[0292] Alternatively, the first parameter includes a third value, wherein the third value is, when the number of resource groups in the first time-frequency resource is a fourth value, the terminal device detects the first reference signal port for any resource group in the first time-frequency resource within the first time period to receive at least one first signal, on all antennas of at least one antenna used by the terminal device to receive at least one first signal.

[0293] Alternatively, the first parameter includes a fifth value, where the fifth value is, when the terminal device receives at least one first signal within the first time period, on any one of the at least one antenna used by the terminal device to receive the at least one first signal, for any resource group in the first time-frequency resource, under the condition that the number of first reference signal ports detected is a sixth value, the maximum value of the product of the number of at least one antenna and the number of resource groups included in the first time-frequency resource;

[0294] Alternatively, the first parameter includes a seventh value, wherein the seventh value is the maximum number of resource groups included in the first time-frequency resource under the condition that the number of at least one antenna used by the terminal device to receive at least one first signal is an eighth value, and for any resource group in the first time-frequency resource on any antenna of the at least one antenna used by the terminal device to receive at least one first signal, the number of first reference signal ports detected is a ninth value.

[0295] Optionally, the communication unit is also used to send second indication information to the network device, wherein the second indication information is used to indicate any one of the second value, fourth value, sixth value, eighth value or ninth value, or the second indication information is used to indicate the eighth value and the ninth value.

[0296] Optionally, the processing unit is further used to determine the reference signal port detected on the second time-frequency resource based on the first parameter; wherein, in the terminal device, for any resource group in the second time-frequency resource, when the maximum number of first reference signal ports detected is less than the first threshold, the terminal device detects part or all of the reference signal ports in the CDM group where the reference signal port associated with the first signal is located on the second time-frequency resource, and the second time-frequency resource is part or all of the time-frequency resource carrying the first signal.

[0297] Optionally, the communication unit is further used to receive third indication information, where the third indication information is used to indicate the second time-frequency resource.

[0298] An embodiment of the present application may also provide another communication device applied to a terminal device, the communication device comprising a communication unit and a processing unit. The processing unit is configured to determine that reference signal ports detected on a second time-frequency resource include some or all reference signal ports in a CDM group containing reference signal ports associated with a first signal, where the second time-frequency resource is a time-frequency resource corresponding to the first signal; and the communication unit is configured to receive the first signal.

[0299] Optionally, the CDM group in which the reference signal port associated with the first signal is located includes a part of the second reference signal ports, which are: second reference signal ports in which the power or intensity received by the terminal device is greater than a second threshold, or second reference signal ports in which the correlation with the reference signal port associated with the first signal is greater than a third threshold.

[0300] An embodiment of the present application may also provide a communication device applied to a terminal device, the communication device comprising a communication unit and a processing unit. The communication unit is configured to receive first indication information from the terminal device, wherein the first indication information is used to indicate a first parameter, and the first parameter is used to indicate a maximum number of times the terminal device detects a first reference signal port on a first time-frequency resource to receive at least one first signal from a network device within a first time period, where the first time-frequency resource is part or all of the time-frequency resource that carries the at least one first signal; and the processing unit is configured to determine the first parameter based on the first indication information.

[0301] Optionally, the first parameter includes the maximum total number of times that the terminal device detects the first reference signal port for all resource groups in the first time-frequency resource on all antennas of at least one antenna used by the terminal device to receive at least one first signal within the first time period.

[0302] Alternatively, the first parameter includes the maximum total number of times that the terminal device detects the first reference signal port for all resource groups in the first time-frequency resource on any one of at least one antenna used by the terminal device to receive at least one first signal within a first time period.

[0303] Alternatively, the first parameter includes the maximum total number of times that the terminal device detects the first reference signal port on all antennas of at least one antenna used by the terminal device to receive at least one first signal for any resource group in the first time-frequency resource in the first time period.

[0304] Alternatively, the first parameter includes the maximum number of first reference signal ports detected by the terminal device for any resource group in the first time-frequency resource in order to receive at least one first signal within the first time period.

[0305] Optionally, the first parameter includes a first value, wherein the first value is the maximum total number of times the terminal device detects the first reference signal port for all resource groups in the first time-frequency resource on any one of the at least one antenna used by the terminal device to receive at least one first signal in a first time period to receive at least one first signal when the number of at least one antenna used by the terminal device to receive at least one first signal is a second value.

[0306] Alternatively, the first parameter includes a third value, wherein the third value is, when the number of resource groups in the first time-frequency resource is a fourth value, the terminal device detects the first reference signal port for any resource group in the first time-frequency resource within the first time period to receive at least one first signal, on all antennas of at least one antenna used by the terminal device to receive at least one first signal.

[0307] Alternatively, the first parameter includes a fifth value, wherein the fifth value is, when the terminal device receives at least one first signal within the first time period, on any one of the at least one antennas used by the terminal device to receive at least one first signal, for any resource group in the first time-frequency resource, under the condition that the number of first reference signal ports detected is a sixth value, the maximum value of the product of the number of at least one antenna and the number of resource groups included in the first time-frequency resource.

[0308] Alternatively, the first parameter includes a seventh value, wherein the seventh value is the maximum number of resource groups included in the first time-frequency resource under the condition that the number of at least one antenna used by the terminal device to receive at least one first signal is an eighth value, and for any resource group in the first time-frequency resource on any antenna of the at least one antenna used by the terminal device to receive at least one first signal, the number of first reference signal ports detected is a ninth value.

[0309] Optionally, the communication unit is also used to receive second indication information from the terminal device, wherein the second indication information is used to indicate any one of the second value, fourth value, sixth value, eighth value or ninth value, or the second indication information is used to indicate the eighth value and the ninth value.

[0310] Optionally, the processing unit is also used to determine the second time-frequency resources and the terminal device for receiving the first signal based on the first parameter, and detect the first maximum value of the number of first reference signal ports for any resource group in the second time-frequency resources, wherein the second time-frequency resources are part or all of the network devices of the time-frequency resources corresponding to the first signal determined based on the first parameter.

[0311] Optionally, the processing unit is also used to determine, when the first maximum value is less than the first threshold, that the CDM group to which the reference signal port associated with the first signal belongs includes at least one second reference signal port, and the second reference signal port is a reference signal port associated with the interference signal carried on part or all of the resource groups in the second time-frequency resources.

[0312] Optionally, the communication unit is further used to send third indication information, where the third indication information is used to indicate the second time-frequency resource.

[0313] An embodiment of the present application may also provide another communication device for use in a network device, the communication device comprising a communication unit and a processing unit. The processing unit is configured to determine that a CDM group containing a reference signal port associated with a first signal includes at least one second reference signal port, wherein the second reference signal port is a reference signal port associated with an interference signal carried on a second time-frequency resource, and the second time-frequency resource is a time-frequency resource corresponding to the first signal; and the communication unit is configured to send the first signal to a terminal device.

[0314] Optionally, when the sum of the number of second reference signal ports and the number of reference signal ports associated with the first signal is less than or equal to the number of reference signal ports corresponding to the CDM group where the reference signal ports associated with the first signal are located, the CDM group where the reference signal ports associated with the first signal are located includes all the second reference signal ports.

[0315] Optionally, when the sum of the number of second reference signal ports and the number of reference signal ports associated with the first signal is greater than the number of reference signal ports corresponding to the CDM group where the reference signal ports associated with the first signal are located, the CDM group where the reference signal ports associated with the first signal are located includes a part of the second reference signal ports, and other CDM groups include another part of the second reference signal ports.

[0316] Optionally, the CDM group in which the reference signal port associated with the first signal is located includes a part of the second reference signal ports, which are: second reference signal ports in which the power or intensity received by the terminal device is greater than a second threshold, or second reference signal ports in which the correlation with the reference signal port associated with the first signal is greater than a third threshold.

[0317] In a possible implementation, the functions of the communication unit and the processing unit of the above communication device may be performed by the processor 1201 running the program in the memory 1202 , or may be performed by the processor 1201 alone.

[0318] In some possible implementations, various aspects of the communication method provided in the embodiments of the present application may also be implemented in the form of a program product, which includes program code. When the program code is run on a computer device, the program code is used to enable the computer device to execute the steps of the communication method described in this specification according to various exemplary embodiments of the present application.

[0319] The program product may employ any combination of one or more readable media. The readable medium may be a readable signal medium or a readable storage medium. The readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device, or component, or any combination thereof. More specific examples of readable storage media (a non-exhaustive list) include: an electrical connection with one or more wires, a portable disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination thereof.

[0320] According to the program product of the embodiment of the present application, it can be a portable compact disc read-only memory (CD-ROM) and include program code, and can be run on a server device. However, the program product of the present application is not limited thereto. In this document, a readable storage medium can be any tangible medium containing or storing a program, and the program can be used by or in combination with a communication transmission, device or device.

[0321] A readable signal medium may include a data signal propagated in baseband or as part of a carrier wave, carrying readable program code. Such propagated data signals may take a variety of forms, including, but not limited to, electromagnetic signals, optical signals, or any suitable combination thereof. A readable signal medium may also be any readable medium other than a readable storage medium that can transmit, propagate, or transfer a program for use by or in conjunction with a periodic network action system, apparatus, or device.

[0322] Program code embodied on a readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.

[0323] The program code for performing the operations of the present application can be written in any combination of one or more programming languages, including object-oriented programming languages ​​such as Java, C++, and conventional procedural programming languages ​​such as "C" or similar programming languages. The program code can be executed entirely on the user computing device, partially on the user device, as a stand-alone software package, partially on the user computing device and partially on a remote computing device, or entirely on a remote computing device or server. In the case of a remote computing device, the remote computing device can be connected to the user computing device via any type of network, including a local area network (LAN) or a wide area network (WAN), or can be connected to an external computing device.

[0324] The present invention also provides a computing device-readable storage medium for communication methods, wherein the content is not lost after a power outage. The storage medium stores a software program, including program code. When the program code is executed on a computing device, the software program, when read and executed by one or more processors, can implement any of the communication methods described in the present invention.

[0325] An embodiment of the present application also provides an electronic device. When the functional modules are divided according to the respective functions, the electronic device includes: a processing module for the terminal device or network device to execute the steps in the above embodiments, for example, the operation of S601, or other processes of the technology described in the embodiment of the present application.

[0326] Among them, all relevant contents of each step involved in the above method embodiment can be referred to the functional description of the corresponding functional module and will not be repeated here.

[0327] Of course, the first device includes but is not limited to the unit modules listed above. Moreover, the specific functions that can be implemented by the above functional modules also include but are not limited to the functions corresponding to the method steps described in the above examples. The detailed description of other units of the electronic device can refer to the detailed description of the corresponding method steps, and the embodiments of this application are not repeated here.

[0328] When integrated, the electronic device described in the above embodiments may include a processing module, a storage module, and a communication module. The storage module is used to store the electronic device's program code and data. The communication module is used to support communication between the electronic device and other network entities, enabling functions such as phone calls, data exchange, and internet access.

[0329] The processing module is used to control and manage the operation of the electronic device. The processing module can be a processor or a controller. The communication module can be a transceiver, an RF circuit, or a communication interface. The storage module can be a memory.

[0330] Furthermore, the electronic device may further include an input module and a display module. The display module may be a screen or a display. The input module may be a touch screen, a voice input device, or a fingerprint sensor.

[0331] The present application is described above with reference to block diagrams and / or flow charts illustrating methods, apparatus (systems) and / or computer program products according to embodiments of the present application. It should be understood that a block of a block diagram and / or flow chart, as well as a combination of blocks of a block diagram and / or flow chart, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer and / or other programmable data processing device to produce a machine such that instructions executed by the computer processor and / or other programmable data processing device create a method for implementing the functions / actions specified in the block diagram and / or flow chart block.

[0332] Accordingly, the present application may also be implemented using hardware and / or software (including firmware, resident software, microcode, etc.). Furthermore, the present application may take the form of a computer program product on a computer-usable or computer-readable storage medium having computer-usable or computer-readable program code embodied in the medium for use by or in conjunction with an instruction execution system. In the context of the present application, a computer-usable or computer-readable medium may be any medium that can contain, store, communicate, transmit, or convey a program for use by or in conjunction with an instruction execution system, apparatus, or device.

[0333] This application describes multiple embodiments in detail with reference to multiple flowcharts. However, it should be understood that these flowcharts and the descriptions of their corresponding embodiments are provided for ease of understanding only and should not constitute any limitation on this application. Not every step in each flowchart is necessarily required; for example, some steps can be skipped. Furthermore, the order in which the steps are executed is not fixed and is not limited to that shown in the figures. The order in which the steps are executed should be determined by their functions and inherent logic.

[0334] The multiple embodiments described in this application can be arbitrarily combined or the steps can be executed in an interleaved manner. The execution order of each embodiment and the execution order between the steps of each embodiment are not fixed and are not limited to those shown in the figures. The execution order of each embodiment and the interleaved execution order of each step of each embodiment should be determined by their functions and internal logic.

[0335] Although the present application has been described with reference to specific features and embodiments thereof, it is apparent that various modifications and combinations may be made thereto without departing from the spirit and scope of the present application. Accordingly, this specification and the drawings are merely illustrative of the present application as defined by the appended claims and are deemed to cover any and all modifications, variations, combinations or equivalents within the scope of the present application. Obviously, those skilled in the art may make various modifications and variations to the present application without departing from the scope of the present application. Thus, the present application is intended to include such modifications and variations if they fall within the scope of the claims of the present application and their equivalents.

[0336] The above specific implementation methods further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above are only specific implementation methods of the present invention and are not intended to limit the scope of protection of the present invention. Any modifications, equivalent replacements, improvements, etc. made on the basis of the technical solutions of the present invention should be included in the scope of protection of the present invention.

Claims

1. A communication method, characterized in that: include: The terminal device determines first indication information, where the first indication information is used to indicate a first parameter, where the first parameter is used to indicate a maximum number of times that the terminal device detects a first reference signal port on a first time-frequency resource to receive at least one first signal from a network device within a first time period, where the first time-frequency resource is part or all of a time-frequency resource that carries the at least one first signal; The terminal device sends the first indication information to the network device.

2. The method according to claim 1, characterized in that include: The first parameter includes a maximum total number of times that the terminal device detects the first reference signal port for all resource groups in the first time-frequency resource on all antennas of at least one antenna used by the terminal device to receive the at least one first signal in the first time period; Alternatively, the first parameter includes a maximum total number of times that the terminal device detects the first reference signal port for all resource groups in the first time-frequency resource on any one of at least one antenna used by the terminal device to receive the at least one first signal in the first time period; Alternatively, the first parameter includes a maximum total number of times that, for any resource group in the first time-frequency resource, the terminal device detects the first reference signal port on all antennas of at least one antenna used by the terminal device to receive the at least one first signal within the first time period; Alternatively, the first parameter includes the maximum number of the first reference signal ports detected by the terminal device for any resource group in the first time-frequency resource in order to receive the at least one first signal within the first time period.

3. The method according to claim 1, characterized in that include: The first parameter includes a first value, wherein the first value is, when the number of at least one antenna used by the terminal device to receive the at least one first signal is a second value, a maximum value of a total number of times that the terminal device detects the first reference signal port for all resource groups in the first time-frequency resource on any one of the at least one antenna used by the terminal device to receive the at least one first signal in the first time period to receive the at least one first signal; Alternatively, the first parameter includes a third value, wherein the third value is, when the number of resource groups in the first time-frequency resource is a fourth value, a maximum total number of times, for the terminal device to receive the at least one first signal, for any resource group in the first time-frequency resource, on all antennas of at least one antenna used by the terminal device to receive the at least one first signal within the first time period; Alternatively, the first parameter includes a fifth value, wherein the fifth value is, when, for receiving the at least one first signal in the first time period, the terminal device detects, on any one of the at least one antenna used by the terminal device for receiving the at least one first signal, for any resource group in the first time-frequency resource, that the number of first reference signal ports is a sixth value, a maximum value of a product of the number of the at least one antenna and the number of resource groups included in the first time-frequency resource; Alternatively, the first parameter includes a seventh value, wherein the seventh value is the maximum number of resource groups included in the first time-frequency resource under the condition that the number of at least one antenna used by the terminal device to receive the at least one first signal is an eighth value, and that for any resource group in the first time-frequency resource, on any antenna of the at least one antenna used by the terminal device to receive the at least one first signal, the number of first reference signal ports detected is a ninth value.

4. The method according to claim 3, characterized in that The method further comprises: The terminal device sends second indication information to the network device, wherein the second indication information is used to indicate any one of the second value, the fourth value, the sixth value, the eighth value or the ninth value, or the second indication information is used to indicate the eighth value and the ninth value.

5. The method according to claim 4, characterized in that The method further comprises: The terminal device determines, according to the first parameter, a reference signal port to be detected on the second time-frequency resource; In which, in the terminal device, when it is detected that the maximum number of the first reference signal ports is less than a first threshold for any resource group in the second time-frequency resource, the terminal device detects part or all of the reference signal ports in the CDM group where the reference signal port associated with the first signal is located on the second time-frequency resource, and the second time-frequency resource is part or all of the time-frequency resource carrying the first signal.

6. The method according to claim 5, characterized in that The method further comprises: The terminal device receives third indication information, where the third indication information is used to indicate the second time-frequency resource.

7. A communication method, characterized in that: include: The network device receives first indication information from the terminal device, where the first indication information is used to indicate a first parameter, and the first parameter is used to indicate a maximum number of times that the terminal device detects a first reference signal port on a first time-frequency resource to receive at least one first signal from the network device within a first time period, where the first time-frequency resource is part or all of the time-frequency resource that carries the at least one first signal; The network device determines the first parameter according to the first indication information.

8. The method according to claim 7, characterized in that include: The first parameter includes a maximum total number of times that the terminal device detects the first reference signal port for all resource groups in the first time-frequency resource on all antennas of at least one antenna used by the terminal device to receive the at least one first signal in the first time period; Alternatively, the first parameter includes a maximum total number of times that the terminal device detects the first reference signal port for all resource groups in the first time-frequency resource on any one of at least one antenna used by the terminal device to receive the at least one first signal in the first time period; Alternatively, the first parameter includes a maximum total number of times that, for any resource group in the first time-frequency resource, the terminal device detects the first reference signal port on all antennas of at least one antenna used by the terminal device to receive the at least one first signal within the first time period; Alternatively, the first parameter includes the maximum number of the first reference signal ports detected by the terminal device for any resource group in the first time-frequency resource in order to receive the at least one first signal within the first time period.

9. The method according to claim 7, characterized in that The first parameter includes a first value, wherein The first value is a maximum value of a total number of times, for all resource groups in the first time-frequency resource, the terminal device detects the first reference signal port on any one of the at least one antenna used by the terminal device to receive the at least one first signal in the first time period to receive the at least one first signal when the number of the at least one antenna used by the terminal device to receive the at least one first signal is a second value; Alternatively, the first parameter includes a third value, wherein the third value is, when the number of resource groups in the first time-frequency resource is a fourth value, a maximum total number of times, for the terminal device to receive the at least one first signal, for any resource group in the first time-frequency resource, on all antennas of at least one antenna used by the terminal device to receive the at least one first signal within the first time period; Alternatively, the first parameter includes a fifth value, wherein the fifth value is, when, for receiving the at least one first signal in the first time period, the terminal device detects, on any one of the at least one antenna used by the terminal device for receiving the at least one first signal, for any resource group in the first time-frequency resource, that the number of first reference signal ports is a sixth value, a maximum value of a product of the number of the at least one antenna and the number of resource groups included in the first time-frequency resource; Alternatively, the first parameter includes a seventh value, wherein the seventh value is the maximum number of resource groups included in the first time-frequency resource under the condition that the number of at least one antenna used by the terminal device to receive the at least one first signal is an eighth value, and that for any resource group in the first time-frequency resource, on any antenna of the at least one antenna used by the terminal device to receive the at least one first signal, the number of first reference signal ports detected is a ninth value.

10. The method according to claim 9, characterized in that The method further comprises: The network device receives second indication information from the terminal device, wherein the second indication information is used to indicate any one of the second value, the fourth value, the sixth value, the eighth value or the ninth value, or the second indication information is used to indicate the eighth value and the ninth value.

11. The method according to claim 9, characterized in that After the network device determines the first parameter according to the first indication information, the method further includes: The network device determines the second time-frequency resource and the terminal device to receive the first signal based on the first parameter, and detects the first maximum value of the number of the first reference signal ports for any resource group in the second time-frequency resource, wherein the second time-frequency resource is part or all of the time-frequency resource corresponding to the first signal determined by the network device based on the first parameter.

12. The method according to claim 11, characterized in that The method further comprises: When the first maximum value is less than the first threshold, the network device determines that the CDM group to which the reference signal port associated with the first signal belongs includes at least one second reference signal port, and the second reference signal port is a reference signal port associated with an interference signal carried on part or all of the resource groups in the second time-frequency resources.

13. The method according to claim 12, characterized in that The method further comprises: The network device sends third indication information, where the third indication information is used to indicate the second time-frequency resource.

14. A communication device, characterized in that: include: a processing unit, configured to determine first indication information, wherein the first indication information is used to indicate a first parameter, and the first parameter is used to indicate a maximum number of times that a terminal device detects a first reference signal port on a first time-frequency resource to receive at least one first signal from a network device within a first time period, wherein the first time-frequency resource is part or all of a time-frequency resource that carries the at least one first signal; The communication unit is used to send the first indication information to the network device.

15. The device according to claim 14, characterized in that include: The first parameter includes a maximum total number of times that the terminal device detects the first reference signal port for all resource groups in the first time-frequency resource on all antennas of at least one antenna used by the terminal device to receive the at least one first signal in the first time period; Alternatively, the first parameter includes a maximum total number of times that the terminal device detects the first reference signal port for all resource groups in the first time-frequency resource on any one of at least one antenna used by the terminal device to receive the at least one first signal in the first time period; Alternatively, the first parameter includes a maximum total number of times that, for any resource group in the first time-frequency resource, the terminal device detects the first reference signal port on all antennas of at least one antenna used by the terminal device to receive the at least one first signal within the first time period; Alternatively, the first parameter includes the maximum number of the first reference signal ports detected by the terminal device for any resource group in the first time-frequency resource in order to receive the at least one first signal within the first time period.

16. The device according to claim 14, characterized in that include: The first parameter includes a first value, wherein the first value is, when the number of at least one antenna used by the terminal device to receive the at least one first signal is a second value, a maximum value of a total number of times that the terminal device detects the first reference signal port for all resource groups in the first time-frequency resource on any one of the at least one antenna used by the terminal device to receive the at least one first signal in the first time period to receive the at least one first signal; Alternatively, the first parameter includes a third value, wherein the third value is, when the number of resource groups in the first time-frequency resource is a fourth value, a maximum total number of times, for the terminal device to receive the at least one first signal, for any resource group in the first time-frequency resource, on all antennas of at least one antenna used by the terminal device to receive the at least one first signal within the first time period; Alternatively, the first parameter includes a fifth value, wherein the fifth value is, when, for receiving the at least one first signal in the first time period, the terminal device detects, on any one of the at least one antenna used by the terminal device for receiving the at least one first signal, for any resource group in the first time-frequency resource, that the number of first reference signal ports is a sixth value, a maximum value of a product of the number of the at least one antenna and the number of resource groups included in the first time-frequency resource; Alternatively, the first parameter includes a seventh value, wherein the seventh value is the maximum number of resource groups included in the first time-frequency resource under the condition that the number of at least one antenna used by the terminal device to receive the at least one first signal is an eighth value, and that for any resource group in the first time-frequency resource, on any antenna of the at least one antenna used by the terminal device to receive the at least one first signal, the number of first reference signal ports detected is a ninth value.

17. The device according to claim 16, characterized in that The communication unit is further used to send second indication information to the network device, wherein the second indication information is used to indicate any one of the second value, the fourth value, the sixth value, the eighth value or the ninth value, or the second indication information is used to indicate the eighth value and the ninth value.

18. The device according to claim 17, characterized in that The processing unit is further configured to enable the terminal device to determine a reference signal port to be detected on a second time-frequency resource according to the first parameter; In which, in the terminal device, when it is detected that the maximum number of the first reference signal ports is less than a first threshold for any resource group in the second time-frequency resource, the terminal device detects part or all of the reference signal ports in the CDM group where the reference signal port associated with the first signal is located on the second time-frequency resource, and the second time-frequency resource is part or all of the time-frequency resource carrying the first signal.

19. The device according to claim 18, characterized in that include: The communication unit is further used to receive third indication information, where the third indication information is used to indicate the second time-frequency resource.

20. A communication device, characterized in that: include: a communication unit, configured to receive first indication information from a terminal device, wherein the first indication information is used to indicate a first parameter, and the first parameter is used to indicate a maximum number of times that the terminal device detects a first reference signal port on a first time-frequency resource to receive at least one first signal from a network device within a first time period, where the first time-frequency resource is part or all of the time-frequency resource that carries the at least one first signal; A processing unit is configured to determine the first parameter according to the first indication information.

21. The device according to claim 20, characterized in that The first parameter includes a maximum total number of times that, in order to receive the at least one first signal, the terminal device detects the first reference signal port for all resource block groups in the first time-frequency resource on all antennas of at least one antenna used by the terminal device to receive the at least one first signal within the first time period; Alternatively, the first parameter includes a maximum total number of times that the terminal device detects the first reference signal port for all resource block groups in the first time-frequency resource on any one of at least one antenna used by the terminal device to receive the at least one first signal in the first time period; Alternatively, the first parameter includes a maximum total number of times that, for any resource block group in the first time-frequency resource, the terminal device detects the first reference signal port on all antennas of at least one antenna used by the terminal device for receiving the at least one first signal within the first time period to receive the at least one first signal; Alternatively, the first parameter includes the maximum number of the first reference signal ports detected by the terminal device for any resource block group in the first time-frequency resource in order to receive the at least one first signal within the first time period.

22. The device according to claim 20, characterized in that The first parameter includes a first value, wherein The first value is a maximum value of a total number of times, for all resource block groups in the first time-frequency resource, that the terminal device detects the first reference signal port on any one of the at least one antenna used by the terminal device to receive the at least one first signal in the first time period to receive the at least one first signal when the number of the at least one antenna used by the terminal device to receive the at least one first signal is a second value; Alternatively, the first parameter includes a third value, wherein the third value is, when the number of resource block groups in the first time-frequency resource is a fourth value, a maximum total number of times, for the terminal device to receive the at least one first signal, for any resource block group in the first time-frequency resource, on all antennas of at least one antenna used by the terminal device to receive the at least one first signal within the first time period; Alternatively, the first parameter includes a fifth value, wherein the fifth value is, for the terminal device to receive the at least one first signal in the first time period, on any one of the at least one antenna used by the terminal device to receive the at least one first signal, and for any resource block group in the first time-frequency resource, under the condition that the number of first reference signal ports detected is a sixth value, a maximum value of a product of the number of the at least one antenna and the number of resource block groups included in the first time-frequency resource; Alternatively, the first parameter includes a seventh value, wherein the seventh value is the maximum number of resource block groups included in the first time-frequency resource under the condition that, for any resource block group in the first time-frequency resource, the number of first reference signal ports detected is a ninth value, when the number of at least one antenna used by the terminal device to receive the at least one first signal is an eighth value.

23. The device according to claim 22, characterized in that The communication unit is further used to receive second indication information from the terminal device, wherein the second indication information is used to indicate any one of the second value, the fourth value, the sixth value, the eighth value or the ninth value, or the second indication information is used to indicate the eighth value and the ninth value.

24. The device according to claim 22, characterized in that The processing unit is further used to determine, based on the first parameter, a second time-frequency resource and the terminal device for receiving the first signal, and to detect, for any resource block group in the second time-frequency resource, a first maximum value of the number of the first reference signal ports, wherein the second time-frequency resource is part or all of the time-frequency resource corresponding to the first signal, and the network device is determined based on the first parameter.

25. The device according to claim 24, characterized in that The processing unit is further used to, when the first maximum value is less than a first threshold, determine that the CDM group to which the reference signal port associated with the first signal belongs includes at least one second reference signal port, where the second reference signal port is a reference signal port associated with an interference signal carried on part or all of the resource block groups in the second time-frequency resource.

26. The device according to claim 25, characterized in that The communication unit is further used to send third indication information, where the third indication information is used to indicate the second time-frequency resource.

27. A communication device, characterized in that: include: At least one processor, configured to call a program in a memory to execute the method according to any one of claims 1 to 6, or to execute the method according to any one of claims 7 to 13.

28. A chip, characterized in that: comprising at least one processor and an interface; The interface is configured to provide program instructions or data to the at least one processor; The at least one processor is configured to execute the program instructions to implement the method according to any one of claims 1 to 6, or to implement the method according to any one of claims 7 to 13.

29. A computer-readable storage medium, characterized in that The computer-readable storage medium stores instructions, and when the instructions are executed, the computer executes the method according to any one of claims 1 to 6, or the method according to any one of claims 7 to 13.

30. A computer program product, characterized in that The invention comprises a computer program, which, when executed by a processor, implements the method according to any one of claims 1 to 6 or performs the method according to any one of claims 7 to 13.

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