CN116671055A

CN116671055A - Communication method and device

Info

Publication number: CN116671055A
Application number: CN202180088907.6A
Authority: CN
Inventors: 宣一荻; 谢信乾; 郭志恒
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2021-02-03
Filing date: 2021-02-03
Publication date: 2023-08-29
Also published as: WO2022165671A1

Abstract

The embodiment of the application provides a communication method and device. The method comprises the following steps: the terminal equipment determines first indication information, wherein the first indication information is used for indicating a first parameter, the first parameter is used for indicating the terminal equipment to receive at least one first signal from the network equipment in a first time period, and the maximum value of the times of detecting a first reference signal port on a first time-frequency resource, wherein the first time-frequency resource is part or all of time-frequency resources for bearing the at least one first signal; the terminal device sends first indication information to the network device. In the method, the network equipment configures the reference signal port through the channel estimation capability reported by the terminal equipment, so that the situation that the terminal equipment cannot restrain all or most of interference information is reduced, and the interference suppression effect of the terminal equipment is improved.

Description

Communication method and device

Technical Field

The present application relates to the field of communications technologies, and in particular, to a communications method and apparatus.

Background

In a communication system, the space division multiplexing technology can improve the transmission efficiency of a channel, so that the space division multiplexing technology is widely applied. In practical applications of information interaction between a terminal and a base station, the terminal may receive interference information from other terminals due to space division multiplexing technology. Therefore, the terminal needs to perform interference suppression on the interference information. Specifically, the base station adopts a space division multiplexing technology to send signals to a plurality of terminal devices on the same time-frequency resource, and configures different reference signal ports for the terminal devices. The terminal equipment determines channel coefficients by carrying out channel estimation on the reference signal ports so as to carry out interference suppression on all or most of interference signals.

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 on all reference signal ports corresponding to all the scheduling bandwidths or the scheduling sub-bandwidths, so that it may not be able to perform interference suppression on all or most of the interference signals.

In a 5G wireless new access technology (New Radio Access Technology, NR) system, a base station cannot determine a channel estimation capability of a terminal device, so that a terminal device with limited channel estimation capability and a large number of interfering terminal devices simultaneously transmit signals in the same frequency, the terminal device with limited channel estimation capability cannot perform channel estimation on all reference signal ports, signals of all or most of interfering terminal devices cannot be suppressed, and transmission performance is limited.

Disclosure of Invention

The embodiment of the application provides a communication method and a communication device, wherein network equipment configures a reference signal port according to channel estimation capability reported by terminal equipment, so that the occurrence of the situation that the terminal equipment cannot inhibit all or most of interference information is reduced, and the interference inhibition effect of the terminal equipment is improved.

In a first aspect, an embodiment of the present application provides a communication method, including: the terminal equipment determines first indication information, wherein the first indication information is used for indicating a first parameter, the first parameter is used for indicating the terminal equipment to receive at least one first signal from the network equipment in a first time period, the maximum value of the times of detecting the first reference signal port on a first time-frequency resource, and the first time-frequency resource is part of or all of time-frequency resources carrying the at least one first signal, and the terminal equipment sends the first indication information to the network equipment.

In this way, the terminal equipment reports the channel estimation capability, so that the network equipment configures the reference signal ports corresponding to the signals on the time-frequency resource according to the channel estimation capability of the terminal equipment, thereby reducing the situation that the terminal equipment cannot perform channel estimation on all the reference signal ports, enabling the terminal equipment to determine all the interference signals and inhibit the interference signals, and improving the interference inhibition effect of the terminal equipment.

Optionally, the first parameter includes a maximum value of a total number of times 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 for receiving the at least one first signal in the first time period.

Or, the first parameter includes that the terminal equipment receives at least one first signal in a first time period, and a maximum value of total times of the first reference signal ports is detected for all resource groups in the first time-frequency resource on any antenna of at least one antenna used by the terminal equipment for receiving the at least one first signal.

Or, the first parameter includes that the terminal equipment receives at least one first signal in a first time period, and for any resource group in the first time-frequency resource, the maximum value of the total times of the first reference signal ports is detected on all antennas in at least one antenna used by the terminal equipment for receiving the at least one first signal.

Or, the first parameter includes that the terminal equipment detects the maximum value of the number of the first reference signal ports for any resource group in the first time-frequency resource for receiving at least one first signal in the first time period. Therefore, the representation modes of the first parameters are enriched, and the terminal equipment can conveniently select a proper mode to report the channel estimation capability according to the actual application scene.

Optionally, the first parameter includes a first value, where the first value is a maximum value of a total number of first reference signal ports for all resource groups in the first time-frequency resource, for the terminal device to receive the at least one first signal in the first period of time, on any one of the at least one antennas used by the terminal device to receive the at least one first signal, in a case that a number of the at least one antennas used by the terminal device to receive the at least one first signal is the second value.

Or, the first parameter includes a third value, where the third value is a maximum value of a total number of times of the first reference signal ports for the terminal device to receive the at least one first signal in the first time period in the case that the number of resource groups in the first time-frequency resource is the fourth value, and for any one of the resource groups in the first time-frequency resource, all antennas in at least one antenna used by the terminal device to receive the at least one first signal are detected.

Or, the first parameter includes a fifth value, where the fifth value is a maximum value of a product of the number of at least one antenna and the number of resource groups included in the first time-frequency resource under the condition that the number of ports of the first reference signal is detected as the sixth value for any one of the resource groups in the first time-frequency resource on any one of at least one antenna used by the terminal device for receiving the at least one first signal in the first time period.

Or, the first parameter includes a seventh value, where the seventh value is a maximum value of the number of resource groups included in the first time-frequency resource under the condition that the number of ports of the first reference signal is the ninth value, and on any one of the at least one antennas used by the terminal device for receiving the at least one first signal, the number of ports of the first reference signal is detected for any one of the resource groups in the first time-frequency resource. Therefore, the expression modes of the first parameters are enriched, and the terminal equipment can conveniently select a proper mode according to the actual application scene to report the channel estimation capability.

Optionally, the method further comprises: the terminal device sends second indication information to the network device, wherein the second indication information is used for indicating 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 for indicating the eighth value and the ninth value. In this way, the network device is facilitated to determine the channel estimation capabilities of the terminal device.

Optionally, the method further comprises: the terminal equipment determines a reference signal port detected on the second time-frequency resource according to the first parameter; and when the terminal equipment detects that the maximum value of the number of the first reference signal ports is smaller than a first threshold value for any resource group in the second time-frequency resources, the terminal equipment detects part or all of the reference signal ports in the CDM group where the reference signal ports associated with the first signals are located on the second time-frequency resources, wherein the second time-frequency resources are part or all of the time-frequency resources carrying the first signals. 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 according to the channel estimation, so that the range of detecting the reference signal port is reduced, the frequency of the terminal device for carrying out the channel estimation is reduced, and the signaling overhead is reduced.

Optionally, the method further comprises: and the terminal equipment receives third indication information, wherein the third indication information is used for indicating the second time-frequency resource. In this way, the terminal device is convenient to determine the second time-frequency resource, thereby determining the detection reference signal port.

In a second aspect, an embodiment of the present application provides a communication method, including: the network equipment receives first indication information from the terminal equipment, wherein the first indication information is used for indicating first parameters, the first parameters are used for indicating the terminal equipment to receive at least one first signal from the network equipment in a first time period, the maximum value of the times of detecting a first reference signal port on a first time-frequency resource, and the first time-frequency resource is part or all of time-frequency resources for bearing the at least one first signal; the network device determines a first parameter according to the first indication information.

Or, the first parameter includes that the terminal equipment detects the maximum value of the number of the first reference signal ports for any resource group in the first time-frequency resource for receiving at least one first signal in the first time period.

Or, the first parameter includes a seventh value, where the seventh value is a maximum value of the number of resource groups included in the first time-frequency resource under the condition that the number of ports of the first reference signal is the ninth value, and on any one of the at least one antennas used by the terminal device for receiving the at least one first signal, the number of ports of the first reference signal is detected for any one of the resource groups in the first time-frequency resource.

Optionally, the method further comprises: the network device receives second indication information from the terminal device, wherein the second indication information is used for indicating 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 for indicating the eighth value and the ninth value.

Optionally, after the network device determines the first parameter according to the first indication information, the method further includes: the network equipment determines a second time-frequency resource and the terminal equipment to receive the first signal according to the first parameter, and detects a 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 of or all of the network equipment of the time-frequency resource corresponding to the first signal and is determined according to the first parameter.

Optionally, the method further comprises: and under the condition that the first maximum value is smaller than a first threshold value, the network equipment determines that at least one second reference signal port is included in a CDM group where the reference signal port associated with the first signal is located, wherein the second reference signal port is a reference signal port associated with interference signals carried on part or all resource groups in the second time-frequency resource.

Optionally, the method further comprises: the network device sends third indication information, wherein the third indication information is used for indicating the second time-frequency resource.

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

Optionally, the second reference signal port including a part of CDM group where the reference signal port associated with the first signal is located is: and the power or strength received by the terminal equipment in the second reference signal ports is greater than a second threshold value, or the correlation of the reference signal ports associated with the first signal in the second reference signal ports is greater than a third threshold value.

In a fourth aspect, an embodiment of the present application provides a communication method, including: the network equipment determines that a CDM group where a reference signal port associated with a first signal is located comprises 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; the network device sends a first signal to the terminal device.

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, all the second reference signal ports are included in the CDM group where the reference signal ports associated with the first signal are located.

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 the other CDM groups include another part of the second reference signal ports.

In a fifth aspect, an embodiment of the present application provides a communication apparatus. The communication device may be a terminal device, or may be a chip or a chip system in the terminal device. The communication device may include a processing unit and a communication unit. When the communication device is a terminal equipment, the processing unit may be a processor and the communication unit may be a communication interface or interface circuit or transceiver. The communication device may further comprise a storage unit, which may be a memory. The storage unit is configured to store instructions, and the processing unit executes the instructions stored in the storage unit, so that the terminal device implements a communication method described in the first aspect or any one of possible implementation manners of the first aspect. When the communication means is a chip in 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, pins or circuits, etc. The processing unit executes the instructions stored by the storage unit to cause the terminal device to implement a communication method as described in the first aspect or any one of the possible implementations of the first aspect. The memory unit may be a memory unit (e.g., a register, a cache, etc.) in the chip, or a memory unit (e.g., a read-only memory, a random access memory, etc.) located outside the chip in the terminal device. Illustratively, the communication device includes: a processing unit and a communication unit. The processing unit is used for determining first indication information, wherein the first indication information is used for indicating a first parameter, the first parameter is used for indicating the terminal equipment to receive at least one first signal from the network equipment in a first time period, and the maximum value of the times of detecting a first reference signal port on a first time-frequency resource, and the first time-frequency resource is part or all of time-frequency resources carrying the at least one first signal; and the communication unit is used for sending the first indication information to the network equipment.

Optionally, the communication unit is further configured to send second indication information to the network device, where 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.

Optionally, the processing unit is further configured to determine, according to the first parameter, a reference signal port detected on the second time-frequency resource; and when the terminal equipment detects that the maximum value of the number of the first reference signal ports is smaller than a first threshold value for any resource group in the second time-frequency resources, the terminal equipment detects part or all of the reference signal ports in the CDM group where the reference signal ports associated with the first signals are located on the second time-frequency resources, wherein the second time-frequency resources are part or all of the time-frequency resources carrying the first signals.

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

In a sixth aspect, an embodiment of the present application provides a communication apparatus. The communication device may be a network device, or may be a chip or a chip system in the network device. The communication device may include a processing unit and a communication unit. When the communication apparatus is a network device, the processing unit may be a processor and the communication unit may be a communication interface or an interface circuit. The communication device may further comprise a storage unit, which may be a memory. The storage unit is configured to store instructions, and the processing unit executes the instructions stored by the storage unit, to cause the network device to implement a communication method described in the second aspect or any one of the possible implementation manners of the second aspect. When the communication means is a chip or a system of chips within a 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, pins or circuitry, etc. The processing unit executes instructions stored by the storage unit to cause the network device to implement a communication method as described in the second aspect or any one of the possible implementations of the second aspect. The memory unit may be a memory unit (e.g., a register, a cache, etc.) within the chip, or a memory unit (e.g., a read-only memory, a random access memory, etc.) within the network device that is external to the chip.

The communication device comprises, for example, a communication unit and a processing unit. A communication unit, configured to receive first indication information from a terminal device, where the first indication information is used to indicate a first parameter, the first parameter is used to indicate that the terminal device receives at least one first signal from a network device in a first period of time, a maximum value of a number of times of detecting a first reference signal port on a first time-frequency resource, and the first time-frequency resource is part or all of time-frequency resources that carry the at least one first signal; and the processing unit is used for determining a first parameter according to the first indication information.

Optionally, the communication unit is further configured to receive second indication information from the terminal device, where 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.

Optionally, the processing unit is further configured to determine, according to the first parameter, that the second time-frequency resource and the terminal device are configured to receive the first signal, and detect, for any resource group in the second time-frequency resource, a first maximum value of the number of ports of the first reference signal, where the second time-frequency resource is a part of or all network devices of the time-frequency resource corresponding to the first signal, and is determined according to the first parameter.

Optionally, the processing unit is further configured to determine that the CDM group where the reference signal port associated with the first signal is located 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 groups in the second time-frequency resource, if the first maximum value is less than the first threshold.

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

In a seventh aspect, an embodiment of the present application provides a communication apparatus. The communication device may be a terminal device, or may be a chip or a chip system in the terminal device. The communication device may include a processing unit and a communication unit. When the communication device is a terminal equipment, the processing unit may be a processor and the communication unit may be a communication interface or interface circuit or transceiver. The communication device may further comprise a storage unit, which may be a memory. The storage unit is configured to store instructions, and the processing unit executes the instructions stored in the storage unit, so that the terminal device implements a communication method described in the first aspect or any one of possible implementation manners of the first aspect. When the communication means is a chip in 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, pins or circuits, etc. The processing unit executes the instructions stored by the storage unit to cause the terminal device to implement a communication method as described in the third aspect or any one of the possible implementations of the third aspect. The memory unit may be a memory unit (e.g., a register, a cache, etc.) in the chip, or a memory unit (e.g., a read-only memory, a random access memory, etc.) located outside the chip in the terminal device.

The communication device comprises, for example, a processing unit and a communication unit. The processing unit is used for determining that the reference signal ports detected on the second time-frequency resource comprise part or all of the reference signal ports in the CDM group where the reference signal ports associated with the first signal are located, and the second time-frequency resource is a time-frequency resource corresponding to the first signal; and the communication unit is used for receiving the first signal.

In an eighth aspect, an embodiment of the present application provides a communication apparatus. The communication device may be a network device, or may be a chip or a chip system in the network device. The communication device may include a processing unit and a communication unit. When the communication apparatus is a network device, the processing unit may be a processor and the communication unit may be a communication interface or an interface circuit. The communication device may further comprise a storage unit, which may be a memory. The storage unit is configured to store instructions, and the processing unit executes the instructions stored by the storage unit, so that the network device implements a communication method described in the fourth aspect or any one of possible implementation manners of the fourth aspect. When the communication means is a chip or a system of chips within a 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, pins or circuitry, etc. The processing unit executes instructions stored by the storage unit to cause the network device to implement a communication method as described in the second aspect or any one of the possible implementations of the second aspect. The memory unit may be a memory unit (e.g., a register, a cache, etc.) within the chip, or a memory unit (e.g., a read-only memory, a random access memory, etc.) within the network device that is external to the chip.

The communication device comprises, for example, a processing unit and a communication unit. The processing unit is used for determining that the CDM group where the reference signal port associated with the first signal is located comprises 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 used for sending the first signal to the terminal equipment.

In a ninth aspect, the present embodiment further provides a system, which includes at least one communication device according to the embodiment of the present application, where at least one device in the system may be integrated into a whole machine or an apparatus, or at least one device in the system may also be separately provided as an element or a device.

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

In an eleventh aspect, embodiments of the present application provide a chip comprising at least one processor and an interface; an interface for providing program instructions or data to at least one processor; at least one processor is configured to execute program line instructions to implement the method according to the first, second, third or fourth aspect.

In a twelfth aspect, an embodiment of the present application provides a communication apparatus, including: at least one processor configured to invoke a program in memory to perform the method according to the first, second, third or fourth aspect.

In a thirteenth aspect, an embodiment of the present application provides a communication apparatus, including: at least one processor and interface circuitry to provide information input and/or information output for the at least one processor, the at least one processor to perform the method of the first, second, third or fourth aspect.

In a fourteenth aspect, embodiments of the present application provide a computer-readable storage medium storing instructions that, when executed, cause a computer to perform the method of the first, second, third or fourth aspects.

In a fifteenth aspect, embodiments of the present application provide a computer program product comprising a computer program stored in a readable storage medium, from which at least one processor of an electronic device can read, the at least one processor executing the computer program causing the electronic device to perform the method of the first, second, third or fourth aspects.

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 advantages achieved by each aspect and the corresponding possible embodiments are similar and are not repeated.

Drawings

Fig. 1 is a schematic structural diagram of a communication system according to an embodiment of the present application;

fig. 2 is a schematic diagram of interference information in a first downlink communication according to an embodiment of the present application;

fig. 3 is a schematic diagram of interference information in a second downlink communication according to an embodiment of the present application;

fig. 4 is a schematic diagram of interference information in a third downlink communication according to an embodiment of the present application;

fig. 5 is a schematic diagram of a 5G DMRS pattern according to an embodiment of the present application;

FIG. 6 is a schematic flow chart of a communication method according to the present application;

FIG. 7 is a schematic flow chart of a communication method according to the present application;

fig. 8 is a schematic diagram of a first DMRS port configuration provided in an embodiment of the present application;

fig. 9 is a schematic diagram of a second DMRS port configuration provided in an embodiment of the present application;

fig. 10 is a schematic diagram of a third DMRS port configuration provided in an embodiment of the present application;

fig. 11 is a schematic flow chart of a communication method according to an embodiment of the present application;

Fig. 12 is a schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 13 is a schematic structural diagram of a chip according to an embodiment of the present application.

Detailed Description

It should be noted that, the network architecture and the service scenario described in the embodiments of the present application are for more clearly describing the technical solution of the embodiments of the present application, and do not constitute a limitation on the technical solution provided by the embodiments of the present application, and those skilled in the art can know that, with the evolution of the network architecture and the appearance of the new service scenario, the technical solution provided by the embodiments of the present application is equally applicable to similar technical problems.

The communication method of the embodiment of the application can be applied to various communication systems. As shown in fig. 1, fig. 1 is a schematic diagram of a communication system to which the present application is applicable. While the communication system 100 is illustrated as including one network device 110 and two terminal devices 120, it is to be understood that the communication system 100 may include multiple network devices and that each network device may include other numbers of terminal devices within its coverage area, as embodiments of the present application are not limited in this respect.

The network device 110 may be a device that communicates with the terminal device 120 (or referred to as a communication terminal, terminal). Network device 110 may provide communication coverage for a particular geographic area and may communicate with terminal devices located within the coverage area.

The communication system 100 may be a long term evolution (long term evolution, LTE) system, an LTE frequency division duplex (frequency division duplex, FDD) system, an LTE time division duplex (time division duplex, TDD), a universal mobile telecommunications system (universal mobile telecommunication system, UMTS), a 5G communication system, or a New Radio (NR) or other evolving communication system, etc.

The network device 110 may be a transmission receiving point (transmission reception point, TRP), an evolved NodeB (eNB or eNodeB) in an LTE system, a home base station (e.g., home evolved NodeB, or home Node B, HNB), a Base Band Unit (BBU), a radio controller in a cloud radio access network (cloud radio access network, CRAN) scenario, or an access network device in a relay station, an access point, a vehicle-mounted device, a wearable device, a 5G network, or an access network device in a future evolved public land mobile network (public land mobile network, PLMN) network, or the like, may be an Access Point (AP) in a WLAN, may be a gNB in a new radio system (NR) system, and embodiments of the present application are not limited. In one network architecture, the access network device may include a Centralized Unit (CU) node, or 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.

The embodiment of the application does not limit the specific technology and the specific equipment form adopted by the network equipment. For convenience of description, in all embodiments of the present application, the above-mentioned apparatus for providing a wireless communication function for a terminal device is collectively referred to as a network device.

The terminal device 120 may be a device that provides voice or data connectivity to a user, such as a handheld device with wireless connectivity, an in-vehicle device, etc. Currently, some examples of terminals are: a mobile phone, tablet, laptop, palmtop, mobile internet device (mobile internet device, MID), wearable device, virtual Reality (VR) device, augmented reality (augmented reality, AR) device, wireless terminal in industrial control (industrial control), wireless terminal in unmanned (self driving), wireless terminal in teleoperation (remote medical surgery), wireless terminal in smart grid (smart grid), wireless terminal in transportation security (transportation safety), wireless terminal in smart city (smart city), wireless terminal in smart home (smart home), cellular phone, cordless phone, session initiation protocol (session initiation protocol, SIP) phone, wireless local loop (wireless local loop, WLL) station, personal digital assistant (personal digital assistant, PDA), handheld device with wireless communication function, public computing device or other processing device connected to wireless modem, vehicle-mounted device, wearable device, terminal device in future communication network (public land mobile network), or land mobile communication network (PLMN) is not limited to this application.

By way of example, and not limitation, in embodiments of the present application, the terminal device may also be a wearable device. The wearable device can also be called as a wearable intelligent device, and is a generic name for intelligently designing daily wear by applying wearable technology and developing wearable devices, such as glasses, gloves, watches, clothes, shoes and the like. The wearable device is a portable device that is worn directly on the body or integrated into the clothing or accessories of the user. The wearable device is not only a hardware device, but also can realize a powerful function through software support, data interaction and cloud interaction. The generalized wearable intelligent device includes full functionality, large size, and may not rely on the smart phone to implement complete or partial functionality, such as: smart watches or smart glasses, etc., and focus on only certain types of application functions, and need to be used in combination with other devices, such as smart phones, for example, various smart bracelets, smart jewelry, etc. for physical sign monitoring.

In addition, in the embodiment of the application, the terminal equipment can also be terminal equipment in an internet of things (internet of things, ioT) system, and the IoT is an important component of the development of future information technology, and the main technical characteristics are that the object is connected with the network through a communication technology, so that the man-machine interconnection and the intelligent network of the internet of things are realized.

The terminal device in the embodiment of the present application may also be referred to as: a User Equipment (UE), a Mobile Station (MS), a Mobile Terminal (MT), an access terminal, a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a user terminal, a wireless communication device, a user agent, or a user equipment, etc. Network device 110 and terminal device 120 may be deployed on land, including indoors or outdoors, hand-held, or vehicle-mounted; the device can be deployed on the water surface; but also on aerial planes, balloons and satellites. The embodiment of the present application does not limit the application scenarios of the network device 110 and the terminal device 120.

It should be understood that a device having a communication function in a network/system according to an embodiment of the present application may be referred to as a communication device. Taking the communication system 100 shown in fig. 1 as an example, the communication device may include a network device 110 and a terminal device 120 with communication functions, where the network device 110 and the terminal device 120 may be specific devices described above, and are not described herein again; the communication device may also include other devices in the communication system 100, such as a network controller, a mobility management entity, and other network entities, which are not limited in this embodiment of the present application.

In the embodiment of the application, the terminal device or each network device comprises 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 (central processing unit, CPU), a memory management unit (memory management unit, MMU), and a memory (also referred to as a main memory). The operating system may be any one or more computer operating systems that implement business processes through processes (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 comprises applications such as a browser, an address book, word processing software, instant messaging software and the like. Further, the embodiment of the present application is not particularly limited to the specific structure of the execution body of the method provided in the embodiment of the present application, as long as the communication can be performed by the method provided in the embodiment of the present application by running the program recorded with the code of the method provided in the embodiment of the present application, for example, the execution body of the method provided in the embodiment of the present application may be a network device, or a functional module in the network device capable of calling the program and executing the program.

Furthermore, various aspects or features of the application may be implemented as a method, apparatus, or article of manufacture using standard programming and/or engineering techniques. The term "article of manufacture" as used herein encompasses a computer program accessible from any computer-readable device, carrier, or media. For example, computer-readable media may include, but are not limited to: magnetic storage devices (e.g., hard disk, floppy disk, or magnetic tape, etc.), optical disks (e.g., compact Disk (CD), digital versatile disk (digital versatile disc, DVD), etc.), smart cards, and flash memory devices (e.g., erasable programmable read-only memory (EPROM), cards, sticks, key drives, etc.). Additionally, various storage media described herein can represent one or more devices and/or other machine-readable media for storing information. The term "machine-readable medium" can include, without being limited to, wireless channels and various other media capable of storing, containing, and/or carrying instruction(s) and/or data.

In a communication system, a network device may transmit multiple pieces of information on the same time-frequency resource. The terminal device may receive the interference information when receiving the information. The communication method in the embodiment of the application is particularly applied to the suppression of interference information in a communication system. The following describes a scenario in which interference information exists in some communication systems in the embodiments of the present application.

Fig. 2 is a schematic diagram illustrating existence of interference information in a first downlink communication according to an embodiment of the present application, as shown in fig. 2. Communication system 200 may include network device 210, terminal device 220, and 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 resource, for example, the network device 210 sends a first information to the terminal device 220 and the network device 210 sends a second information to the terminal device 230. The terminal device 220 receives the second information when it receives the first information. The first information and the second information interfere with each other. For the terminal device 220, the second information is interference information. Similarly, for the terminal device 230, the first information is interference information. It will be appreciated that communication system 200 may include a plurality of network devices and that each network device may include other numbers of terminal devices within its coverage area, as embodiments of the present application are not limited in this respect.

Fig. 3 is a schematic diagram illustrating existence of interference information in a second downlink communication according to an embodiment of the present application, as shown in fig. 3. Communication system 300 may include network device 310, network device 320, terminal device 330, and terminal device 340. On the same time-frequency resource, the network device 310 transmits downlink information to the terminal device 330, and the network device 320 in another neighboring area receives uplink information from the terminal device 340. The terminal device 330 receives the uplink information sent by the terminal device 340 when receiving the downlink information. For the terminal device 330, the uplink information is interference information. It will be appreciated that communication system 300 may include a plurality of network devices and that each network device may include other numbers of terminal devices within its coverage area, as embodiments of the present application are not limited in this respect.

Fig. 4 is a schematic diagram illustrating that interference information exists in a third downlink communication according to an embodiment of the present application, as shown in fig. 4. Communication system 400 may include network device 410, terminal device 420, and terminal device 430. Network device 410 is a full duplex network device, i.e., network device 410 may transmit and receive simultaneously on the same frequency domain resources. When the network device 410 transmits the downlink information to the terminal device 420, the terminal device 430 transmits the uplink information to the network device 410. The terminal device 410 receives the uplink information sent by the terminal device 430 when receiving the downlink information. For the terminal device 410, the uplink information is interference information. It will be appreciated that communication system 400 may include a plurality of network devices and that each network device may include other numbers of terminal devices within its coverage area, as embodiments of the present application are not limited in this respect.

In a communication system, a multiple access scheme is generally an orthogonal frequency division multiple access (orthogonal frequency division multiplexing access, OFDMA) scheme. The main characteristic of the ofdma is that the transmission resource is divided into mutually orthogonal time-frequency Resource Elements (REs), and the signals sent by the transmitting end are carried on the REs and transmitted to the receiving end.

Due to the fading characteristics of the radio channel, the signal carried on the RE is distorted after being transmitted through the radio channel, and this distortion is generally referred to as a channel coefficient. In order to be able to recover the signal at the receiving end, the channel coefficients need to be estimated. For example, the transmitting end transmits a known signal on a specific RE, and the receiving end estimates the channel coefficient according to the received signal and the known signal. Furthermore, the receiving end can interpolate the channel coefficients on other REs according to the channel coefficients obtained by the estimation, and demodulate the data signals by using the channel coefficients obtained by the estimation.

For example, the transmitting end is taken as a base station end, and the receiving end is taken as a terminal device. The base station side is equipped with multiple antennas to implement spatial multiplexing transmission by using a multiple-input multiple-output (MIMO) technology, that is, multiple data streams are transmitted on the same time-frequency resource, each data stream is transmitted on a separate spatial layer, and each spatial layer can be mapped onto a different antenna port and sent to a different terminal. The channel coefficients from different antenna ports at the base station end to each terminal are different, in order for the terminal to acquire the information transmitted on a plurality of space layers, the channel coefficients between each antenna port at the base station end and the terminal need to be estimated, so that different DMRS needs to be configured for each antenna port, and the DMRS corresponding to the different antenna ports can be multiplexed in a time division, frequency division, code division and other modes.

In a possible implementation manner, for any terminal, the terminal may determine, according to a field in downlink control information (downlink control information, DCI) sent by the base station, whether other DMRS ports except for the DMRS ports used for transmitting information by the terminal are occupied. If the other DMRS ports are occupied, the information transmitted on the other DMRS ports may cause interference to the information transmitted by the terminal. The terminal needs to perform channel estimation on all the DMRS ports to obtain channel coefficients of all the DMRS ports, and selects the DMRS ports with stronger interference to perform interference suppression according to the obtained channel coefficients of all the DMRS ports.

However, the channel estimation capability of the terminal device is different, which may happen that the channel estimation capability of the terminal device is insufficient to detect all DMRS ports, so that channel estimation is not performed on the DMRS ports with stronger interference, channel coefficients corresponding to the DMRS ports with stronger interference are not obtained, interference suppression cannot be performed on the DMRS ports with stronger interference, and the interference suppression effect of the terminal is poor.

Based on this, the embodiment of the application provides a communication method, the terminal device reports the channel estimation capability by sending the indication information, so that the network device configures the reference signal ports according to the channel estimation capability of the terminal device, thereby reducing the situation that the terminal device cannot perform channel estimation on all the reference signal ports, enabling the terminal device to determine all the interference signals and inhibit, and improving the interference inhibition effect of the terminal device.

To facilitate an understanding of the embodiments of the present application, some of the words involved in the present application will be briefly described.

1. Wireless channel: the data signal transmission channel using the wireless signal as the transmission medium is an image metaphor for the path between the transmitting end and the receiving end in the wireless communication, and can be used for information transmission of network equipment and terminal equipment.

2. Channel coefficient: the wireless channel has fading characteristics, and a signal carried on a time-frequency Resource Element (RE) generates distortion after channel transmission, and the channel distortion is called a channel coefficient.

3. Channel estimation: and estimating the channel coefficient from the received signal. For example, a scheme based on a reference signal may be used for channel estimation, for example, a transmitting end transmits a known signal on a specific RE, and a receiving end performs channel estimation on channel coefficients according to the received signal and the known signal.

4. Antenna port: in the 5G NR system, an antenna port is a logical port for transmission, and one antenna port includes a plurality of physical antennas. From the perspective of the receiving end, each antenna port corresponds to an independent wireless channel.

5. Demodulation reference signal (demodulation reference signal, DMRS): a reference signal for recovering a received signal. The receiving end can determine the fading characteristic of the wireless channel (i.e. the channel coefficient of the wireless channel) according to the received signal and the known DMRS signal, and recover the received signal. In the 5G NR system, considering that channel coefficients from different antenna ports to a terminal are different, in order for a receiving end to obtain information transmitted on multiple spatial layers, the channel coefficients between each antenna port and the terminal need to be estimated, so different DMRS need to be configured for each antenna port, and DMRS corresponding to different antenna ports may be multiplexed in a time division, frequency division, code division, and other manners. Currently, a 5G NR system can support a maximum of 12 MDRS ports.

Fig. 5 is a schematic diagram of a 5G DMRS pattern according to an embodiment of the present application. As shown in fig. 5, the horizontal direction represents the time domain, the vertical direction represents the frequency domain, and each small square represents one RE. The DMRS port 0 and the DMRS port 1 correspond to RE 0, 1, 6 and 7, and signal transmission is carried out on the 4 RE simultaneously and in the same frequency; the DMRS port 2 and the DMRS port 3 correspond to RE 2, RE 3, RE 8 and RE 9, and signal transmission is carried out on the 4 RE simultaneously and in the same frequency; DMRS port 4 and DMRS port 5 correspond to REs 4, 5, 10 and 11, and signal transmission is performed on the 4 REs simultaneously and simultaneously in the same frequency. 108 REs in FIG. 5 form a resource block, carrying control information and data information.

6. Code division multiplexing (code division multiplexing, CDM): also called orthogonal multiplexing, is a multiplexing method that distinguishes original signals by different codes. The codes have mathematical characteristics of large autocorrelation function values and small cross-correlation function values, and terminal equipment can distinguish and select original signals by using the mathematical characteristics.

As shown in fig. 5, DMRS port 0 and DMRS port 1 are multiplexed by an orthogonal code, and REs corresponding to the two ports are referred to as one CDM group. REs 0, 1, 6 and 7 in fig. 5 constitute one CDM group, i.e., DMRS port 0 and DMRS port 1 correspond to one CDM group. The total number of DMRS ports in the example of fig. 5 is 6 and the number of cdm groups is 3.

7. Time unit: such as slots (slots), subframes (subframes), symbols (symbols), or other future defined time units. Note that a time unit is a kind of measurement unit in the time domain, and is not necessarily the smallest time unit.

It will be appreciated that the description of the time slots in the embodiments below may be replaced by other time units, such as subframes, symbols, etc. The embodiment of the present application is not limited thereto.

8. Subcarrier: the frequency domain resources are divided into several sub-resources, which may be referred to as one sub-carrier on each frequency domain. The sub-carrier may also be understood as the minimum granularity of the frequency domain resource;

9. resource blocks: one resource block includes consecutive N subcarriers in the frequency domain. For example, one resource block in the LTE system includes 12 subcarriers, and one resource block in the NR system in 5G also includes 12 subcarriers. With the evolution of the communication system, the number of subcarriers included in one resource block can be other values;

10. spatial layer: in a wireless communication system, a base station side is provided with multiple antennas to implement spatial multiplexing transmission by using a multiple-input multiple-output (MIMO) technology, that is, multiple uncorrelated data streams are transmitted on the same time-frequency resource, each uncorrelated data stream is transmitted on a separate spatial layer, and each spatial layer is mapped to a different antenna port for transmission.

11. Detecting a DMRS port: the terminal device may determine, according to the index of the DMRS port, a time-frequency resource of a DMRS signal corresponding to the DMRS port, receive the DMRS signal on the time-frequency resource, and detect or estimate a channel of the DMRS signal, to determine a channel coefficient of a channel corresponding to a signal associated with the DMRS port. Accordingly, detecting a DMRS port may also be referred to as determining a channel coefficient corresponding to the DMRS port.

12. Interference signal: in a communication system, in addition to a signal transmitted from a network device to a certain terminal device, there may be other signals that are not expected to be received by the terminal device in a received downlink signal. For example, when the first terminal device communicates with the first network device, when the first terminal device receives, on a block of time-frequency resource, a downlink signal sent by the first network device, there may be an uplink signal sent by the second terminal device or a downlink signal sent by the second network device on the same time-frequency resource, and the uplink signal from the second terminal device or the downlink signal from the second network device may be a signal that is not expected to be received for the first terminal device to receive the downlink signal of the first network device, which may also be understood as an interference signal.

The communication method provided by the embodiment of the application will be described in detail below with reference to the accompanying drawings. Fig. 6 is a flow chart of a communication method provided by the present application, and as shown in fig. 6, the method according to the embodiment of the present application is as follows:

s601, the terminal equipment determines first indication information, wherein the first indication information is used for indicating a first parameter, the first parameter is used for indicating the terminal equipment to receive at least one first signal from the network equipment in a first time period, and the maximum value of the times of detecting a first reference signal port on a first time-frequency resource, and the first time-frequency resource is part or all of time-frequency resources carrying the at least one first signal.

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 (Physical Downlink Shared Channel, PDSCH).

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

It is to be understood that the terminal device may receive one or more first signals from the network device during the first time period. For example, when the first period is one slot, the terminal device may receive one first signal in the first period when the PDSCH resource mapping Type is Type a, and may receive a plurality of first signals in the first period when the PDSCH resource mapping Type is Type B, where 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 one slot. It may be appreciated that the embodiment of the present application may determine the time domain size of the first time-frequency resource through the first time period.

In the embodiment of the present application, the first time-frequency resource is part or all of the time-frequency resource carrying at least one first signal. It will be appreciated that for receiving at least one first signal in a first time period, the terminal device needs to detect the first reference signal port on all or part of the time-frequency resources carrying the at least one first signal. When the maximum value of the 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 portion of the time-frequency resource corresponding to the at least one first signal, the terminal device cannot detect the first reference signal port on all of the time-frequency resources corresponding to the at least one first signal, and therefore the first time-frequency resource is the portion of the time-frequency resource carrying the at least one first signal. When the maximum value of the number of times of detecting the DMRS port by the terminal device corresponding to the first parameter in the first time period is equal to the number of times of detecting the first reference signal port by the terminal device on all of the time-frequency resources corresponding to the at least one first signal, the terminal device may detect the first reference signal port on all of the time-frequency resources corresponding to the at least one first signal, so that the first time-frequency resources are all of the time-frequency resources carrying the at least one first signal.

In the embodiment of the present application, the first reference signal may be a DMRS, or may be other reference signals, which is not limited herein. The first reference signal port may be a DMRS port, or other reference signal ports, which is not limited herein.

In the embodiment of the application, the first parameter is used for indicating the maximum number of times that the terminal equipment can perform channel estimation or detection on the reference signal port on the first time-frequency resource for receiving the first signal in the first time period. The first parameter may quantitatively describe a channel estimation capability of the terminal device or a capability of the terminal device to detect the first reference signal port, and the larger the first parameter value is, the stronger the channel estimation capability of the terminal device is, and the stronger the capability of the terminal device to detect the first reference signal port is.

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 capability of detecting the reference signal port, which is not limited in this embodiment of the present application.

It will be appreciated that the first parameter is fixed for the first period of time and does not vary with the number of at least one first signal received by the terminal device for the first period of time. That is, the terminal device determines a first parameter, which is limited by the resources allocated by the terminal device to the hardware, chip, etc. for detecting the first reference signal port, may be a fixed value predetermined by the terminal device during the first time period,

It should be noted that the first indication information may be a newly defined message, or a message that already exists when the terminal device communicates with the network device, and the first parameter is added to the message. The embodiment of the present application is not particularly limited thereto.

Alternatively, the first indication information may indicate the first parameter by means of an index. The index indicated by the first indication information corresponds to one or more values of the first parameter.

S602, the terminal equipment sends first indication information to the network equipment.

The network device receives the first indication information from the terminal device.

In the embodiment of the application, the terminal equipment sends the first indication information to the network equipment, reports the channel estimation capability of the terminal equipment, and is convenient for the subsequent network equipment to determine the number of the terminals using the same time-frequency resource to transmit signals according to the channel estimation capability, so that the terminal equipment with weak channel estimation can detect and inhibit most or all interference, and fully exert the interference inhibition capability of the terminal equipment.

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

In the embodiment of the application, the terminal equipment can send the first indication information for multiple times, or can send the first indication information only once. The embodiment of the present application is not limited thereto. For example, the terminal device may perform this step before receiving the downlink signal each time, and report its channel estimation capability, so as 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 replacing the connected network device, and report its channel estimation capability to the replaced network device.

S603, the network equipment determines a first parameter according to the first indication information.

In the embodiment of the application, the network equipment can obtain the first parameter by analyzing the first indication information.

The network device may determine whether the channel estimation capability of the terminal device is limited through the first parameter, so as to determine a plurality of signals in the time-frequency resource.

For example, when the network device determines that the channel estimation capability of the terminal device is limited, the network device may reduce the number of terminals transmitting signals simultaneously and co-frequently on the time-frequency resource where the first signal is located, that is, reduce the number of interference signals simultaneously and co-frequently transmitted on the time-frequency resource where the first signal is located, so as to reduce the number of times that the terminal device needs to perform channel estimation on the DMRS port associated with the interference signals.

In summary, the terminal device of the embodiment of the present application reports the channel estimation capability by sending the indication information, so that the network device configures the reference signal ports on the same time-frequency resource according to the channel estimation capability of the terminal device, thereby reducing the situation that the terminal device cannot perform signal estimation on all the reference signal ports to cause transmission performance loss, for example: the network equipment determines a plurality of interference signals on the same time-frequency resource according to the channel estimation capability of the terminal equipment, and configures the reference signal ports corresponding to the plurality of interference signals, so that the situation that the terminal equipment cannot perform channel estimation on all the reference signal ports is reduced, the terminal equipment can determine all the interference signals and inhibit the interference signals, and the interference inhibition effect of the terminal equipment is improved.

Alternatively, on the basis of the corresponding embodiment of fig. 6, in one possible implementation, the first parameter may have the following several ways, due to the implementation of the terminal device and the different channel estimation algorithm adopted:

in a first manner, the first parameter includes a maximum value of a total number of times of detecting the first reference signal port for the resource group in the first time-frequency resource on all antennas of at least one antenna used by the terminal device for receiving the at least one first signal in the first time period.

It should be understood that in the first aspect, the first parameter indicates the capability of the terminal device to detect the reference signal port, which can also be said to indicate the channel estimation capability of the terminal device. The capability of the terminal device to detect the reference signal port may be related to the number of receive 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. Thus, in order to receive at least one first signal in a first period of time, the terminal device detects a first reference signal port on all antennas used for a set of resources on a first time-frequency resource, and the maximum of the total number of times the terminal device detects the first reference signal port may be the first parameter.

In a second mode, the first parameter includes that the terminal equipment receives at least one first signal in a first time period, and on any antenna in at least one antenna used by the terminal equipment for receiving the at least one first signal, the maximum value of the total times of the first reference signal port is detected for all resource groups in the first time-frequency resource;

it will be appreciated that, since the terminal device may allocate a separate resource for each antenna to perform detection of the reference signal port, the capability 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, the terminal device may be configured to receive at least one first signal in a first period of time, and the maximum value of the total number of times the reference signal port is detected for all resource groups in the first time-frequency resource on any antenna of the at least one antenna used by the terminal device for receiving the at least one first signal may not be changed according to the number of receiving antennas used by the terminal device. Thus, in order to receive at least one first signal within a first time period, the terminal device detects a first reference signal port on any antenna used for a set of resources on a first time-frequency resource, and the maximum of the total number of times the terminal device detects the first reference signal port may be the first parameter.

In a third mode, the first parameter includes that the terminal equipment receives at least one first signal in a first time period, and for any resource group in the first time-frequency resource, the maximum value of the total times of the first reference signal port is detected on all antennas in at least one antenna used by the terminal equipment for receiving the at least one first signal;

it will be appreciated that the capability of the terminal device to detect the reference signal port may be independent of the number of resource groups comprised by the first time-frequency resource, due to the implementation of the terminal device and the channel estimation algorithm employed. That is, for receiving at least one first signal in the first period, the terminal device detects, for any one of the resource groups in the first time-frequency resource, the maximum value of the total number of times of the first reference signal ports on all antennas in at least one antenna used by the terminal device for receiving the at least one first signal, which does not vary with the number of resource groups included in the first time-frequency resource. Thus, in order to receive at least one first signal within a first time period, the terminal device detects a first reference signal port on all antennas used for any one of the resource groups in the first time-frequency resource, and the maximum value of the total number of times the terminal device detects the first reference signal port may be the first parameter.

In a fourth aspect, the first parameter includes that the terminal device detects, for receiving at least one first signal in the first period, a maximum value of the number of ports of the first reference signal for any one of the resource groups in the first time-frequency resource.

It will be appreciated that, due to the implementation of the terminal device and the different channel estimation algorithm employed, the capability of the terminal device to detect the reference signal port may be independent of the number of receive antennas of the terminal device and the number of resource groups comprised by the first time-frequency resource. That is, the terminal device detects, for receiving at least one first signal in the first period, for any one of the resource groups in the first time-frequency resource, the maximum value of the number of ports of the first reference signal, 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 period, the terminal device detects the first reference signal port in any one of the resource groups in the first time-frequency resource, and the maximum value of the total number of times the terminal device detects the first reference signal port may be the first parameter.

Alternatively, in another possible implementation, the first parameter may have the following several expressions.

In a fifth aspect, the first parameter includes a first value, where the first value is a maximum value of a total number of times of the first reference signal ports for all resource groups in the first time-frequency resource on any one of the at least one antenna used by the terminal device for receiving the at least one first signal, where the terminal device receives the at least one first signal in the first time period in case that the number of the at least one antenna used by the terminal device for receiving the at least one first signal is the second value.

In the embodiment of the present application, the second value is the number of antennas when the terminal device receives the first signal, and the second value may be predefined, for example: the network device and the terminal device are specified in the standard. The second value may not be predefined. The terminal device may indicate the second value by transmitting second indication information, for example.

It may be understood that the number of times the terminal device detects on the plurality of antennas used for receiving the signal is the same, and when the number of antennas used for receiving the first signal by the terminal device is known, the first value may be a maximum value of the 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.

The channel estimation capability of a terminal device is illustratively related to the number of antennas a used for its reception of signals, the number of resource groups B received on each antenna and the number of reference signal ports C on each resource block. When a is a second value, the first value is b×c.

In a sixth aspect, the first parameter includes a third value, where the third value is a maximum value of a total number of times of the first reference signal ports for the terminal device to receive the at least one first signal in the first time period in a case where the number of resource groups in the first time-frequency resource is the fourth value, and for any one of the resource groups in the first time-frequency resource, all antennas in at least one antenna used by the terminal device to receive the at least one first signal are detected.

In the embodiment of the present application, the fourth value is the number of resource groups received on each antenna of the terminal device, and the fourth value may be predefined, for example: the network device and the terminal device are specified in the standard. The fourth value may not be predefined. The terminal device may indicate the fourth value by transmitting the second indication information.

It will be appreciated that the number of detections at each resource group is the same for the terminal device when the first time-frequency resource comprises a known number of resource groups. The third value is the maximum value of the total number of times the terminal device detects the first reference signal port on all the antennas used for detecting the first reference signal port for any one of the resource groups in the first time-frequency resource.

The channel estimation capability of a terminal device is illustratively related to the number of antennas a used for its reception of signals, the number of resource groups B received on each antenna and the number of reference signal ports C on each resource block. When B is a fourth value, the third value is a×c.

In a seventh aspect, the first parameter includes a fifth value, where the fifth value is a maximum value of a product of a number of at least one antenna and a number of resource groups included in the first time-frequency resource under a condition that the number of ports of the first reference signal is detected as a sixth value for any one of the resource groups in the first time-frequency resource on any one of at least one antenna used by the terminal device for receiving the at least one first signal in the first time period;

in the embodiment of the present application, the sixth value is the number of reference signal ports detected by the terminal device in each resource group, and the sixth value may be predefined, for example: the network device and the terminal device are specified in the standard. The sixth value may not be predefined. The terminal device may indicate the sixth value by transmitting the second indication information.

It is understood that when the number of detected reference signal ports in each resource group is the same by the terminal device, the first parameter is represented as a maximum value of a product of the number of at least one antenna and the number of resource groups contained in the first time-frequency resource.

The channel estimation capability of a terminal device is illustratively related to the number of antennas a used for its reception of signals, the number of resource groups B received on each antenna and the number of reference signal ports C on each resource block. When C is the sixth value, the fifth value is a×b.

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

In the embodiment of the present application, the eighth value is the number of antennas for receiving the signal, and the eighth value may be predefined, for example: the network device and the terminal device are specified in the standard. The eighth value may not be predefined. The terminal device may indicate the eighth value by transmitting the second indication information.

The ninth value is the number of reference signal ports included in each resource group, and may be predefined, for example: the network device and the terminal device are specified in the standard. The ninth value may not be predefined. The terminal device may indicate the ninth value by transmitting the second indication information.

When neither the eighth value nor the ninth value is predefined. The terminal device may indicate the eighth value and the ninth value by transmitting the second indication information, for example.

It will be appreciated that when the number of detections by the terminal device on the plurality of antennas used to receive the signal is the same and the number of detections by the terminal device on each resource group is the same, the first parameter is expressed as the maximum value of the number of resource groups included in the first time-frequency resource.

The channel estimation capability of a terminal device is illustratively related to the number of antennas a used for its reception of signals, the number of resource groups B received on each antenna and the number of reference signal ports C on each resource block. When a is an eighth value and C is a ninth value, the seventh value is B.

Optionally, S603 may further include: and the network equipment determines the reference signal port according to the first parameter, and the terminal equipment determines the process of the detected reference signal port according to the first parameter. Fig. 7 is a schematic flow chart of a communication method according to an embodiment of the present application, as shown in fig. 7, the method is as follows:

S701, the terminal equipment determines first indication information. The first indication information is used for indicating a first parameter, the first parameter is used for indicating the terminal equipment to receive at least one first signal from the network equipment in a first time period, and the maximum value of the times of detecting the first reference signal port on the first time-frequency resource.

S702, the terminal equipment sends first indication information to the network equipment.

S703, the network equipment determines a first parameter according to the first indication information.

S704, the terminal equipment sends second indication information to the network equipment.

The network device receives the second indication information from the terminal device.

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.

Note that the terminal device may execute S702 and S704 simultaneously. The terminal device may also perform S704 before performing S702. The execution time of S704 is not particularly limited in the embodiment of the present application.

And S705, the network equipment determines second time-frequency resources and terminal equipment to receive the first signals according to the first parameters, and detects a first maximum value of the number of the 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 time-frequency resources corresponding to the first signals.

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

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

It should be noted that, according to the first parameter, the network device may determine whether the channel detection capability of the terminal device is limited, so as to determine the second time-frequency resource. The network device may 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 a preset threshold, the network device judges that the terminal device is a terminal with limited detection capability, the network device preferentially configures the terminal device in time-frequency resources with less interference signals, and when the second time-frequency resources are part of the time-frequency resources corresponding to the first signals, the network device can determine that only the first signals exist in the time-frequency resources corresponding to the first signals except for other time-frequency resources of the second time-frequency resources.

Optionally, the network device determines, according to the first parameter, that the terminal device is to receive the first signal, and detects, for any resource group in the second time-frequency resource, a first maximum value of the number of ports of the first reference signal. Depending on the first parameter embodiment, there are in particular the following ways of determining:

when the first parameter is in one mode, the network device determines a first maximum value according to the first parameter, the number of receiving antennas of the terminal device and the number of resource groups included by the second time-frequency resource. The network device determines, according to the first parameter, that the terminal device is to receive the first signal in the first period, that a maximum value of a total number of times of detecting the first reference signal port for all resource groups in the second time-frequency resource is N1, that a number of resource groups included in the second time-frequency resource is X, that a number of receiving antennas of the terminal device is Y, and that the network device determines that the first maximum value is N1/X/Y on all antennas of at least one antenna used by the terminal device to receive the first signal.

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

When the first parameter adopts the mode III, the network equipment determines a first maximum value according to the first parameter and the number of the receiving antennas of the terminal equipment. The network device determines, according to the first parameter, that the terminal device is to receive the first signal in the first period, and detects, for any resource group in the second time-frequency resource, that the maximum value of the total number of times of detecting the first reference signal port is N3 on all antennas in at least one antenna used by the terminal device to receive the first signal, and that the number of receiving antennas of the terminal device is Y, where the first maximum value is N3/Y.

When the first parameter adopts the fourth mode, the network device determines a first maximum value according to the first parameter, wherein the first maximum value is the number of the first reference signal ports indicated by the first parameter. The network device determines, according to the first parameter, that the terminal device receives the first signal in the first period, and detects, for any one of the first time-frequency resource groups, that the maximum value of the number of ports of the first reference signal is N4, and determines that the first maximum value is N4.

When the first parameter is in mode five, mode six, mode seven, or mode eight, the network device may determine that the terminal device is to receive the first signal in the first period according to the first parameter, detect, on all antennas in at least one antenna used by the terminal device to receive the first signal, a maximum value of a total number of times of the first reference signal ports for all resource groups in the second time-frequency resource, and determine the first maximum value according to the maximum value and the number of antennas received by the terminal device and the number of resource groups included in the second time-frequency resource.

S706, when the first maximum value is smaller 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, where 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 resource.

In the embodiment of the present application, the interference signal may be a signal that interferes with the communication of the terminal device, and specific reasons for generating the interference signal may refer to the descriptions of fig. 2 to fig. 4, which are not described herein again.

It should be noted that, the interference signals may be classified into strong interference signals and weak interference signals according to the interference degree to the communication, and the interference signals described in the embodiments of the present application may be all interference signals (including, for example, strong interference signals and weak interference signals), so that the subsequent terminal device may comprehensively suppress all interference signals. The interference signals described in the embodiments of the present application may also refer to strong interference signals (for example, interference signals with interference greater than a certain interference threshold), so that subsequent terminal devices may only suppress the strong interference signals, thereby saving computing resources of the terminal devices. The embodiment of the application does not limit the interference signal in detail.

S706 takes the reference signal port as a DMRS port as an example, and may be specifically described in the following embodiments.

It should be noted that, in the embodiment of the present application, the reference signal port may also be another reference signal port, which is not limited herein. Thus, in the description after this step, the DMRS port may be replaced by another reference signal port.

Optionally, when the first maximum value is smaller than the first threshold, the network device determines that the CDM group where the DMRS port associated with the first signal is located includes at least one second DMRS port, where the second DMRS port is a DMRS port associated with an interference signal carried on part or all of the resource groups in the second time-frequency resource.

Optionally, the first threshold may be the number of DMRS ports corresponding to the second time-frequency resource. That is, the first threshold is the number of DMRS ports included in the CDM group for which the second time-frequency resource corresponds to no data. Specifically, the first threshold may be determined according to the DMRS pattern configured by the higher layer parameter and the antenna port field in the DCI. For example, the DMRS pattern is determined according to the DMRS type indicated by the higher layer parameter and the number of DMRS maximum preamble symbols, and further, the number of DMRS ports corresponding to the second time-frequency resource is determined according to the DMRS pattern and the antenna port field in the DCI. When the maximum preamble symbol number of the DMRS is 1, the number of DMRS ports corresponding to any resource group in the second time-frequency resource may be determined according to the number of CDM groups that are not available for carrying data and indicated by the antenna port field, and when the maximum preamble symbol number of the DMRS is 2, the number of DMRS ports corresponding to any resource group in the second time-frequency resource may be determined according to the number of DMRS preamble symbols indicated by the antenna port field and the number of CDM groups that are not available for carrying data. For example, if the DMRS type is determined to be type 1 according to the higher layer parameter, the maximum DMRS preamble number is 2, and when the number of antenna port field in the DCI indicates that the preamble number is 1 and the number of CDM groups unavailable for carrying data is 3, the first threshold may be determined to be 4.

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

It should be appreciated that if the first maximum value is less than the first threshold, the terminal detection capability is limited. For the terminal equipment with limited detection capability, the network equipment preferentially determines the DMRS port associated with the first signal, and further the network equipment 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. For example, if the DMRS port associated with the signal corresponding to the network device by the network device corresponds to CDM group 0, the network device preferentially associates the DMRS port in CMD group 0 with the interference signal, and if the DMRS port in CDM group 0 is not enough to associate all interference signals, or if there is a part of interference signals that cannot be associated with the DMRS port in CDM group 0, the DMRS port in CDM group other than CDM group 0 is associated with the interference signal.

In the communication system, DMRS ports included in the CDM group in the time-frequency resource are generally standardized. After determining the time-frequency resource, the network device may determine the interference signal at the same time, and further determine a CDM group where the DMRS port associated with the interference signal is located, and further, the network device may select the DMRS port used for transmitting the downlink signal in the CDM group where the associated DMRS port is located, so that the DMRS port for transmitting the first signal and the DMRS port associated with the interference signal may be located in the same CDM group. Illustratively, CDM group 0 includes DMRS port 0 and DMRS port 1, as shown in fig. 5. CDM group 1 includes DMRS port 2 and DMRS port 3. If DMRS port 1 is associated with interference signal 1, the DMRS port associated with interference signal 1 is in CDM group 0, and DMRS port 0 for transmitting the first signal may be selected in CDM group 0. If DMRS port 2 is associated with interference signal 1, DMRS port associated with interference signal 1 may be in CDM group 1, and DMRS port 3 for transmitting the first signal may be selected in CDM group 1.

In the embodiment of the present application, a CDM group where a reference signal port associated with a first signal is located is taken as an example of a CDM group corresponding to a DMRS port associated with the first signal.

The network device determines that a CDM group where the DMRS ports associated with the first signals are located includes at least one second DMRS port, wherein the second DMRS port is a DMRS port associated with an interference signal carried on part or all of a resource group in the second time-frequency resource.

There are several alternative embodiments as follows:

in a possible implementation manner, 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 ports associated with the first signal are located (or may be understood as the maximum number of DMRS ports included in the CDM group), the network device determines that the CDM group where the DMRS ports associated with the first signal are located may include all second DMRS ports, where the second DMRS ports are DMRS ports associated with interfering signals carried on some or all resource groups in the second time-frequency resource.

It may be appreciated that the network device preferentially associates the DMRS port associated with the first signal with other DMRS ports in the CDM group where the DMRS port associated with the first signal is located for the interfering signal carried on some or all of the second time-frequency resources. In this way, the range of all the interference DMRS ports is limited, the frequency of channel estimation by the terminal equipment is reduced, and the signaling overhead is reduced.

Fig. 8 is a schematic diagram of a first DMRS port configuration according to an embodiment of the present application. As shown in fig. 8, there are 12 DMRS ports numbered DMRS ports 0 to 11, divided into 3 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, and 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.

In fig. 8, if DMRS port 0 is a DMRS port associated with when the network device sends the first signal to the terminal device, corresponding CDM group 0 is a CDM group where the reference signal port associated with the first signal is located, and 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 smaller than the number of DMRS ports included in the CDM group where the reference signal port associated with the first signal is located, and the DMRS ports are configured in CDM where the reference signal port associated with the first signal is located, that is, DMRS port 1, DMRS port 6 and DMRS port 7 in CDM group 0 in fig. 8.

In another possible implementation manner, when the number of the 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 a part of the second DMRS ports, where the second DMRS ports are DMRS ports associated with interference signals carried on a part or all of the resource groups in the second time-frequency resource. That is, the CDM group in which the reference signal port associated with the first signal is located cannot include all DMRS ports associated with the interfering signal, and among the DMRS ports associated with the interfering signal, one DMRS port is included in the CDM group in which the reference signal port associated with the first signal is located, and the other DMRS port is included in the other CDM groups.

It can be appreciated that when the DMRS ports included in the CDM group corresponding to the DMRS port associated with the first signal are insufficient to associate all interference signals, the network device associates a part of the interference signals with the DMRS ports in the other CDM groups. In this way, the range of the DMRS ports associated with part of the interference signals is limited, the frequency of channel estimation by the terminal equipment is reduced, and the signaling overhead is reduced.

Fig. 9 is a schematic diagram of a second DMRS port configuration according to an embodiment of the present application. As shown in fig. 9, there are 12 DMRS ports numbered DMRS ports 0 to 11, divided into 3 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, and 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.

In fig. 9, if DMRS port 0 is a DMRS port associated with a first signal related to when the network device sends a downlink signal to the terminal device, corresponding CDM group 0 is a CDM group where a reference signal port associated with the first signal is located, and other CDM groups are CMD group 1 and CMD group 2. Assuming that there are 5 DMRS ports interfering with the terminal device, the number of DMRS ports associated with the interfering signal 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, and the DMRS ports are configured in the CDM group where the reference signal port associated with the first signal is located and other CDM groups. Such as DMRS port 1, DMRS port 6, and DMRS port 7 configured in CDM group 0, and DMRS port 2 and DMRS port 5 in CDM group 1.

Optionally, when the number of the 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 a portion of the second DMRS ports, where the portion of the second DMRS ports is: and the power or strength received by the terminal equipment in the second DMRS port is greater than a second threshold and is borne by the DMRS ports associated with the interference signals on part or all of the resource groups in the second time-frequency resource, or the correlation between the DMRS ports associated with the first signal in the DMRS ports associated with the interference signals on part or all of the resource groups in the second time-frequency resource in the second DMRS port is greater than a third threshold.

It should be noted that, the network device may divide the interference signal into a strong interference signal and a weak interference signal. The strong interfering signal may be an interfering signal received by the terminal device with a power or strength greater than the second threshold. The weak interference signal may be an interference signal received by the terminal device with a power or strength less than or equal to the second threshold.

That is, when the number of the 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 the strong interference DMRS ports, where the strong interference DMRS ports are DMRS ports associated with interference signals received by the terminal device in the second DMRS ports and having a power or strength greater than a second threshold on part or all of the resource groups in the second time-frequency resource, or DMRS ports associated with interference signals carried in part or all of the resource groups in the second time-frequency resource, and the DMRS ports associated with the first signal have a correlation greater than a third threshold.

The greater the correlation between DMRS ports, the greater the interference strength of the corresponding interference signal. The network device includes DMRS ports, of the DMRS ports associated with the interference signals, whose correlation with the DMRS ports associated with the first signal is greater than a third threshold, in a CDM group where a reference signal port associated with the first signal is located, limits a DMRS port range associated with the interference signals with greater interference strength, and the corresponding terminal device preferentially detects the DMRS ports 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 and suppress the stronger interference signal.

In yet another alternative embodiment, the CDM group where the DMRS port associated with the first signal is located includes a portion of the second DMRS port, where the portion of the second DMRS port is: and the power or strength received by the terminal equipment in the second DMRS port is greater than a second threshold and is borne by the DMRS ports associated with the interference signals on part or all of the resource groups in the second time-frequency resource, or the correlation between the DMRS ports associated with the first signal in the DMRS ports associated with the interference signals on part or all of the resource groups in the second time-frequency resource in the second DMRS port is greater than a third threshold.

It may be appreciated that the network device preferentially associates the strong interference signal with the DMRS port in the CDM group where the reference signal port associated with the first signal is located, and defines the DMRS port range associated with the strong interference signal. In this way, the terminal equipment can preferentially detect and restrain the strong interference signal, and fully exert the interference suppression capability of the terminal equipment.

Fig. 10 is a schematic diagram of a third DMRS port configuration according to an embodiment of the present application. As shown in fig. 10, there are 12 DMRS ports numbered DMRS ports 0 to 11, divided into 3 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, and 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.

As shown in fig. 10, 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 where the reference signal port associated with the first signal is located is CDM group 0, and the other CDM groups are CDM group 1 and CDM group 2. The network device has 5 interference signals on the same time-frequency resource, and the number is the interference signals 0-4. The DMRS ports associated with the interference signals 1 and 3 are the DMRS ports 1 and 6, i.e., the DMRS ports associated with the strong interference signals and the DMRS ports associated with the first signal are located in the same CDM group 0, and since the interference signals 0, 2 and 4 are weak interference signals, the DMRS ports associated with the weak interference signals 0, 2 and 4 may be associated with the DMRS ports 2, 5 and 11, i.e., the DMRS ports associated with the weak interference signals may be included in other CDM groups.

It can be understood that, when the network device uses the same resource block to send downlink signals to two or more terminals with limited channel detection capability, if the two downlink signals have strong interference degree, the DMRS ports associated with the two downlink signals are in the same CDM group. If the interference degree between the two downlink signals is weaker, 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 at the terminal device to the maximum

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

Illustratively, the network device transmits 3 CDM groups, CDM group 0, CDM group 1, and CDM group 2, respectively, in the resource block. CDM group 0 and CDM group 1 are CDM groups not used for transmitting data, and CDM group 2 is a CDM group used for transmitting data. When the DMRS port associated when the network device transmits the downlink signal to the terminal device is the 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 groups.

And S707, the network equipment sends third indication information to the terminal equipment.

The terminal device receives the third indication information from the network device.

In the embodiment of the present application, the third indication information is used to indicate the second time-frequency resource. Thus, the terminal equipment can conveniently determine the second time-frequency resource, receive the first signal and demodulate to acquire the required information.

It should be noted that S707 in the embodiment of the present application is an optional step, and it may be determined whether to execute according to an actual application scenario. The sequence of the steps in the embodiment of the application can also be adjusted according to the actual application scene, and the embodiment of the application is not particularly limited.

S708, the terminal equipment determines a reference signal port detected on the second time-frequency resource according to the first parameter; and when the terminal equipment detects that the maximum value of the number of the first reference signal ports is smaller than a first threshold value for any resource group in the second time-frequency resources, the terminal equipment detects part or all of the reference signal ports in the CDM group where the reference signal ports associated with the first signals are located on the second time-frequency resources, wherein the second time-frequency resources are part or all of the time-frequency resources carrying the first signals.

Note that, the manner in which the terminal device determines the first threshold is the same as the manner in which the network device determines in step S706. The manner in which the terminal device determines the first maximum value is the same as that in step S705. The embodiments of the present application are not described herein.

Optionally, when the second time-frequency resource is a part of the time-frequency resource carrying the first signal, the terminal device detects, for any resource group in the second time-frequency resource, the reference signal port associated with the first signal on other time-frequency resources except for the second time-frequency resource in the time-frequency resource carrying the first signal when the maximum value of the number of the ports for detecting the first reference signal is smaller than the first threshold.

In the normal processing method, the terminal device has two channel estimation methods.

In a first mode, the terminal performs blind detection on all the DMRS ports to estimate channel coefficients of all the DMRS ports, and selects a DMRS port with stronger interference to perform interference suppression according to the obtained channel coefficients of all the DMRS ports.

However, the blind detection is performed on all DMRS ports, so that the blind detection times are large, the complexity is high, and the signaling overhead is large and the interference suppression efficiency is low. Especially, when the terminal performs blind detection on all the DMRS ports on each resource block, the number of times, complexity and signaling overhead of blind detection of the DMRS ports by the terminal are further increased.

In addition, the mode has high requirements on the detection capability of the terminal and is not easy to realize. The terminal is limited by hardware or a chip, and the blind detection times have an upper limit. When a terminal performs space division multiplexing (e.g., MIMO space division multiplexing) in units of resource blocks, it may not be possible to blindly detect all DMRS ports on all resource blocks.

Illustratively, the maximum number of blind tests by the terminal (e.g., labeled with N) is 160 when the number of DMRS ports detectable by the terminal on each resource block (e.g., labeled with N1) is 4, the number of resource blocks included in the initial bandwidth (e.g., labeled with N2) is 20, and the number of receive antennas of the terminal (e.g., labeled with N3) is 4. If 12 users are multiplexed and paired on the resource block, and each user transmits 1 stream of data, the network device schedules 20 resource blocks for the terminal user to transmit data, and the terminal needs to perform channel estimation on 12 DMRS ports on each resource block received on each receiving antenna, then the number of blind detection (for example, marked by N') that the terminal needs to support is 960. The number of blind detection needed to be supported by the terminal is larger than the maximum number of blind detection of the terminal, so that the terminal equipment cannot blindly detect all the DMRS ports.

In a second mode, when the terminal determines that other DMRS ports are occupied, the terminal randomly selects a plurality of DMRS ports for blind detection, estimates channel coefficients of the DMRS ports randomly selected, and selects DMRS ports with stronger interference for interference suppression according to the obtained channel coefficients of the DMRS ports. However, a manner of randomly selecting a plurality of DMRS ports to perform blind detection may select a DMRS port with weak interference or a DMRS port without interference, so that a DMRS port with strong interference is not selected, so that a terminal does not obtain a channel coefficient corresponding to the DMRS port with strong interference, and interference suppression cannot be performed on the DMRS port with strong interference, which results in poor interference suppression effect of the terminal.

In this regard, in the embodiment of the present application, when the DMRS ports associated with the interference signal may be all included in the CDM group where the reference signal ports associated with the first signal are located, at least one DMRS port associated with the first signal is a part or all of the DMRS ports in the CDM group where the reference signal ports associated with the first signal are located; when one part of 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 DMRS ports are included in the other CDM group, at least one first DMRS port includes a DMRS port in the CDM group where the reference signal port associated with the first signal is located and a DMRS port in the other CDM group.

Or it may be understood that, when the 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 may also detect DMRS ports in other CDM groups.

In summary, in the embodiment of the present application, a device on a network preferentially configures a terminal with limited channel estimation capability according to a first parameter, and preferentially associates an interference signal with a DMRS port of a CDM group where a reference signal port associated with the first signal is located. In this way, the terminal device detecting the DMRS port of the CDM group can reduce the channel estimation times of the terminal device, and can obtain channel coefficients corresponding to most of interference signals, thereby suppressing most of interference signals.

It should be noted that, in the above embodiment, the network device is taken as an example to configure the reference signal port according to the first parameter. In a specific application, the network device may also configure an appropriate reference signal port for the terminal device without distinction, so that the terminal device may implement less detection times, and may detect most of interference signals.

The specific contents of the configuration port of the network device and the port detected by the terminal device are described below. Exemplary, as shown in fig. 11, the method includes:

s1101, the network device determines that a 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 a time-frequency resource corresponding to the first signal.

In a possible implementation manner, the network device determines the number of reference signal ports associated with the interference signal, and further determines that at least one second reference signal port is included in the CDM group where the reference signal port associated with the first signal is located.

In this embodiment, the reference signal port is taken as a DMRS port as an example, and the following implementation may be specifically mentioned.

Optionally, the network device determines that the CDM group where the DMRS port associated with the first signal is located includes at least one second DMRS port, where 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 another reference signal port, which is not limited herein. Thus, in the description after this step, the DMRS port may be replaced by another reference signal port.

Illustratively, the network device may determine the number and/or location of DMRS ports associated with the interfering signal, etc., by the number of interfering signals, the received power of the interfering signals, and/or information of other terminal devices associated with the interfering signals (e.g., channel detection capabilities of the terminal devices), etc. In a possible implementation manner, when the network device transmits a plurality of signals, the network device configures the signals with relatively smaller interference degree in the same resource block for transmission, so as to reduce interference among the plurality of signals and reasonably utilize resources.

The network device will now be described as including at least one second reference signal port in the CDM group where the reference signal port associated with the first signal is determined. For convenience of description, the following will take the first CDM group as a CDM group where the DMRS port associated with the first signal is located, and the second DMRS port is a DMRS port associated with the interference signal carried on the second time-frequency resource as an example.

In a possible implementation manner, when the number of the second DMRS ports is less than or equal to the number of DMRS ports included in the first CDM group (or may be understood as the maximum number of DMRS ports included in the first CDM group), the network device determines that the first CDM group includes all the second DMRS ports, where the second DMRS ports are DMRS ports associated with interference signals carried on the second time-frequency resource.

In another possible implementation, when the number of the 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 a portion of the second DMRS ports, where the second DMRS ports are DMRS ports associated with interference signals carried on the second time-frequency resource. That is, the first CDM group cannot include all of the second DMRS ports, wherein one part of the second DMRS ports is included in the first CDM group and the other part of the second DMRS ports is included in the second CDM group.

It should be noted that, the network device may estimate relevant information of the interference signal, for example, the received power or strength of the terminal device to the interference signal, and the correlation between DMRS ports, etc. The network device may determine the second DMRS port location according to the estimated information about the interfering signal.

In yet another possible implementation, the network device determines that a portion of the second DMRS ports are included in the first CDM group, where the portion of the second DMRS ports are strong interference DMRS ports of DMRS ports associated with interference signals carried on the second time-frequency resource. The strong interference DMRS port is a DMRS port associated with an interference signal carried on part or all of the resource groups in the second time-frequency resource, where the power or strength received by the terminal device in the second DMRS port is greater than a second threshold, or a DMRS port associated with the first signal and having a correlation greater than a third threshold in the DMRS ports associated with the interference signal carried on part or all of the resource groups in the second time-frequency resource in the second DMRS port.

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

Illustratively, the network device transmits 3 CDM groups, CDM group 0, CDM group 1, and CDM group 2, respectively, in the resource block. CDM group 0 and CDM group 1 are CDM groups not used for transmitting data, and CDM group 2 is a CDM group used for transmitting data. When the DMRS port associated when the network device transmits a downlink signal to the terminal device is the DMRS port in CDM group 0, CDM group 0 is a first CDM group and CDM group 1 is a second CDM group.

S1102, the terminal equipment determines that the reference signal ports detected on the second time-frequency resource comprise part or all of the reference signal ports in the CDM group where the reference signal ports associated with the first signal are located.

The terminal device determines that the DMRS ports detected on the second time-frequency resource include some or all DMRS ports in the CDM group where the DMRS ports associated with the first signal are located.

Optionally, the terminal device determines the DMRS port associated with the first signal. For example, the terminal device may determine the DMRS port associated with the first signal according to the antenna port field in the DCI.

It should be noted that, in a specific implementation, the terminal device may not actively sense the DMRS ports specifically included in the first CDM group, because the network device has already determined that the second DMRS port is in the first CDM group, after determining the first CDM group according to the indication of the network device, the terminal device may perform channel estimation on the DMRS ports in the first CDM group, so that the second DMRS port may be detected in the first CDM group, and better interference suppression may be further implemented.

In the embodiment of the present application, corresponding to two possible implementations of S1101, when the second DMRS ports may be all 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 one part of the DMRS ports is included in the first CDM group and the other part of the DMRS ports is included in the second CDM group, the at least one first DMRS port includes the DMRS ports in the first CDM group and the DMRS ports in the second CDM group.

Or it may 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. The terminal device may also detect the DMRS port in the second CDM group when the detection capability of the terminal device is sufficient.

And S1103, the network device sends a first signal to the terminal device.

The terminal device receives a first signal sent by the network device.

In summary, in the embodiment of the present application, the network device preferentially defines the DMRS port associated with the interference signal within the range of the CDM group where the DMRS port associated with the first signal is located; accordingly, the terminal device preferentially detects DMRS ports of the first CDM group. In this way, the number of ports for detecting the DMRS by the subsequent terminal equipment can be reduced, and the signaling overhead of the terminal equipment is reduced, so that the detection capability and the interference suppression capability of the terminal equipment are fully exerted. Compared with the mode of randomly detecting the DMRS ports, the method provided by the embodiment of the application reduces the detection range of the DMRS ports associated with the interference signals, further increases the probability that the terminal equipment detects the DMRS ports associated with the interference signals, so that the terminal equipment can effectively inhibit the interference signals and fully exert the interference inhibition capability. The method can also reduce the signaling overhead of the terminal equipment and save the computing resources.

From the above description of the solution of the present application, it may be understood that, in order to achieve the above functions, each device includes a corresponding hardware structure and/or a software unit for performing each function. Those of skill in the art will readily appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software. Whether a function is implemented as hardware or computer software driven hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

Fig. 12 is a schematic structural diagram of a communication device according to the present application. Referring to fig. 12, the communication device includes a processor 1201, a memory 1202 and a transceiver 1203.

The processor 1201 is responsible for managing the bus architecture and general processing, and the memory 1202 may store data used by the processor 1201 in performing operations. The transceiver 1203 is configured to receive and transmit data in data communication with the memory 1202 under control of the processor 1201.

A bus architecture may be comprised of any number of interconnected buses and bridges, and in particular one or more processors represented by the processor 1201 and various circuits of memory represented by the memory 1202. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are well known in the art and, therefore, will not be described further herein. The bus interface provides an interface. The processor 1201 is responsible for managing the bus architecture and general processing, and the memory 1202 may store data used by the processor 1201 in performing operations.

The flow disclosed in the embodiment of the application can be applied to the processor 1201 or implemented by the processor 1201. In implementation, the steps of the flow of the communication method may be performed by integrated logic circuits of hardware in the processor 1201 or by instructions in the form of software. The processor 1201 may be a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, and may implement or perform the methods, steps, and logic blocks disclosed in embodiments of the application. The general purpose processor may be a microprocessor or any conventional processor or the like. The steps of a method disclosed in connection with the embodiments of the present application may be embodied directly in a hardware processor for execution, or in a combination of hardware and software modules in the processor for execution. The software modules may be located in a random access memory, flash memory, read only memory, programmable read only memory, or electrically erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in the memory 1202, and the processor 1201 reads the information in the memory 1202 and completes the steps of the signal processing flow in combination with its hardware. In an optional manner of the embodiment of the present application, the processor 1201 is configured to read the program in the memory 1202 and execute the steps executed by the terminal device or the network device in the above embodiment of the method, so that the principle and technical effects are similar, and are not repeated herein.

Fig. 13 is a schematic structural diagram of a chip according to an embodiment of the present application. The chip includes one or more processors 1301 and interface circuitry 1302. Optionally, the chip may also contain a bus 1303.

Processor 1301 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the method described above may be performed by integrated logic circuitry in hardware in processor 1301 or instructions in software. The processor 1301 described above may 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 device, discrete gate or transistor logic, discrete hardware components, MCU, MPU, CPU, or co-processor. The methods and steps disclosed in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

The interface circuit 1302 may be used to send or receive data, instructions, or information, and the processor 1301 may process using the data, instructions, or other information received by the interface circuit 1302, and may send processing completion information out through the interface circuit 1302.

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

Optionally, the memory stores executable software modules or data structures and the processor may perform corresponding operations by invoking operational instructions stored in the memory (which may be stored in an operating system).

Alternatively, the chip may be used in the first device or the second device according to the embodiment of the present application. Optionally, the interface circuit 1302 may be configured to output execution results of the processor 1301. The communication method provided in one or more embodiments of the present application may refer to the foregoing embodiments, and will not be described herein.

The functions corresponding to the processor 1301 and the interface circuit 1302 may be implemented by a hardware design, a software design, or a combination of hardware and software, which is not limited herein.

The embodiment of the application also provides a communication device applied to the terminal equipment, which comprises a communication unit and a processing unit. The processing unit is used for determining first indication information, wherein the first indication information is used for indicating a first parameter, the first parameter is used for indicating the terminal equipment to receive at least one first signal from the network equipment in a first time period, and the maximum value of the times of detecting a first reference signal port on a first time-frequency resource, and the first time-frequency resource is part or all of time-frequency resources carrying the at least one first signal; and the communication unit is used for sending the first indication information to the network equipment.

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

The embodiment of the application also provides another communication device applied to the terminal equipment, which comprises a communication unit and a processing unit. The processing unit is used for determining that the reference signal ports detected on the second time-frequency resource comprise part or all of the reference signal ports in the CDM group where the reference signal ports associated with the first signal are located, and the second time-frequency resource is a time-frequency resource corresponding to the first signal; and the communication unit is used for receiving the first signal.

The embodiment of the application also provides a communication device applied to the terminal equipment, which comprises a communication unit and a processing unit. A communication unit, configured to receive first indication information from a terminal device, where the first indication information is used to indicate a first parameter, the first parameter is used to indicate that the terminal device receives at least one first signal from a network device in a first period of time, a maximum value of a number of times of detecting a first reference signal port on a first time-frequency resource, and the first time-frequency resource is part or all of time-frequency resources that carry the at least one first signal; and the processing unit is used for determining a first parameter according to the first indication information.

The embodiment of the application also provides another communication device applied to the network equipment, which comprises a communication unit and a processing unit. The processing unit is used for determining that the CDM group where the reference signal port associated with the first signal is located comprises 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 used for sending the first signal to the terminal equipment.

In a possible implementation, the functions of the communication unit and the processing unit of the communication apparatus described above may be executed by the processor 1201 executing a program in the memory 1202, or may be executed by the processor 1201 alone.

In some possible implementations, aspects of the communication method provided by the embodiments of the present application may also be implemented in the form of a program product including program code for causing a computer device to perform the steps of the communication method according to the various exemplary embodiments of the present application as described in this specification, when the program code is run on a computer device.

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 can be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or a combination of any of the foregoing. More specific examples (a non-exhaustive list) of the readable storage medium would include the following: an electrical connection having one or more wires, a portable disk, a hard disk, random Access Memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

A program product according to an embodiment of the application may employ a portable compact disc read only memory (CD-ROM) and comprise program code and may run on a server device. However, the program product of the present application is not limited thereto, and in this document, a readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with a communications transmission, apparatus, or device.

The readable signal medium may include a data signal propagated in baseband or as part of a carrier wave with readable program code embodied therein. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination of the foregoing. The readable signal medium may also be any readable medium that is not a readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with a periodic network action system, apparatus, or device.

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.

Program code for carrying out operations of the present application may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, C++ or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computing device, partly on the user's device, as a stand-alone software package, partly on the user's computing device, partly on a remote computing device, or entirely on the remote computing device or server. In the case of remote computing devices, the remote computing device may be connected to the user computing device through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computing device.

The embodiment of the application also provides a computer readable storage medium for the communication method, namely the content is not lost after power failure. The storage medium has stored therein a software program comprising program code which, when executed on a computing device, when read and executed by one or more processors, implements any of the above communication methods of the embodiments of the application.

The embodiment of the application also provides an electronic device, which comprises: the processing module is configured to perform the steps in the foregoing embodiments by the terminal device or the network device, for example, may perform the operation of S601, or other processes of the technology described in the embodiments of the present application.

All relevant contents of each step related to the above method embodiment may be cited to the functional description of the corresponding functional module, which is not described herein.

Of course the first device includes, but is not limited to, the unit modules listed above. In addition, the functions that can be implemented by the above functional modules include, but are not limited to, functions corresponding to the method steps described in the above examples, and detailed descriptions of other units of the electronic device may refer to detailed descriptions of the corresponding method steps, which are not repeated herein in the embodiments of the present application.

In case of employing an integrated unit, the electronic device referred to in the above embodiment may include: the device comprises a processing module, a storage module and a communication module. And the storage module is used for storing the program codes and data of the electronic equipment. The communication module is used for supporting the communication between the electronic equipment and other network entities so as to realize the functions of communication, data interaction, internet access and the like of the electronic equipment.

The processing module is used for controlling and managing the actions of the electronic equipment. The processing module may be a processor or a controller. The communication module may be a transceiver, an RF circuit, or a communication interface, etc. The memory module may be a memory.

Further, 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, etc.

The present application is described above with reference to block diagrams and/or flowchart illustrations of methods, apparatus (systems) and/or computer program products according to embodiments of the application. It will be understood that one block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, and/or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer and/or other programmable data processing apparatus, create means for implementing the functions/acts specified in the block diagrams and/or flowchart block or blocks.

Accordingly, the present application may be embodied in hardware and/or in software (including firmware, resident software, micro-code, etc.). Still further, 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 connection 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, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device.

While various embodiments of the present application have been described in detail in connection with a number of flowcharts, it should be understood that these flowcharts and the associated descriptions of the corresponding embodiments are for ease of understanding only and should not be construed as limiting the present application in any way. Each step in the flowcharts is not necessarily performed, and some steps may be skipped, for example. Moreover, the order of execution of the steps is not fixed nor limited to that shown in the drawings, and should be determined by its functions and inherent logic.

The various embodiments described herein may be combined or performed in any combination or cross-wise manner, and the order of execution of the various embodiments and the order of execution of the various steps of the various embodiments are not necessarily fixed, nor are they limited to what is shown in the figures, the order of execution of the various embodiments and the order of cross-execution of the various steps of the various embodiments should be determined in terms of their functions and inherent logic.

Although the application has been described in connection with specific features and embodiments thereof, it will be apparent that various modifications and combinations can be made without departing from the spirit and scope of the application. Accordingly, the specification and drawings are merely exemplary illustrations of the present application as defined in the appended claims and are considered to cover any and all modifications, variations, combinations, or equivalents that fall within the scope of the application. It will be apparent to those skilled in the art that various modifications and variations can be made to the present application without departing from the scope of the application. Thus, it is intended that the present application also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

The foregoing detailed description of the application has been presented for purposes of illustration and description, and it should be understood that the foregoing is by way of illustration and description only, and is not intended to limit the scope of the application.

Claims

A method of communication, comprising:

the method comprises the steps that a terminal device determines first indication information, wherein the first indication information is used for indicating a first parameter, the first parameter is used for indicating the terminal device to receive at least one first signal from a network device in a first time period, the maximum value of the times of detecting a first reference signal port on a first time-frequency resource, and the first time-frequency resource is part or all of time-frequency resources carrying the at least one first signal;

and the terminal equipment sends the first indication information to the network equipment.
The method according to claim 1, characterized in that it comprises:

the first parameter includes that the terminal equipment receives the at least one first signal in the first time period, and detects the maximum value of the total times of the first reference signal port for all resource groups in the first time-frequency resource on all antennas in at least one antenna used by the terminal equipment for receiving the at least one first signal;

or, the first parameter includes that the terminal equipment receives the at least one first signal in the first time period, and on any antenna in at least one antenna used by the terminal equipment for receiving the at least one first signal, the maximum value of the total times of the first reference signal port is detected for all resource groups in the first time-frequency resource;

Or, the first parameter includes that the terminal equipment detects, for receiving the at least one first signal in the first period of time, a maximum value of a total number of times of the first reference signal port on all antennas of at least one antenna used by the terminal equipment for receiving the at least one first signal for any resource group in the first time-frequency resource;

or, the first parameter includes that the terminal equipment detects, for receiving the at least one first signal in the first period of time, a maximum value of the number of the first reference signal ports for any resource group in the first time-frequency resource.
The method according to claim 1, characterized in that it comprises:

the first parameter includes a first value, where the first value is a maximum value of a total number of times of the first reference signal port for all resource groups in the first time-frequency resource, where the terminal device is configured to receive the at least one first signal in the first period of time if 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;

Or, the first parameter includes a third value, where the third value is that, in a case where the number of resource groups in the first time-frequency resource is a fourth value, the terminal device detects, for receiving the at least one first signal in the first period, a maximum value of a total number of times of the first reference signal ports on all antennas of 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;

or, the first parameter includes a fifth value, where the fifth value is 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 under the condition that the number of the first reference signal ports is a sixth value on any antenna of at least one antenna used by the terminal device for receiving the at least one first signal in the first time period;

or, the first parameter includes a seventh value, where the seventh value is a maximum value of the number of resource groups included in the first time-frequency resource under the condition that the number of the at least one antenna used by the terminal device for receiving the at least one first signal is the eighth value, and on any antenna of the at least one antenna used by the terminal device for receiving the at least one first signal, the number of the first reference signal ports is detected for any resource group in the first time-frequency resource.
A method according to claim 3, characterized in that the method further comprises:

the terminal device sends second indication information to the network device, where 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.
The method according to claim 4, wherein the method further comprises:

the terminal equipment determines a reference signal port detected on a second time-frequency resource according to the first parameter;

and when detecting that the maximum value of the number of the first reference signal ports is smaller than a first threshold value for any resource group in the second time-frequency resources, the terminal equipment detects part or all of the reference signal ports in a CDM group where the reference signal ports associated with the first signal are located on the second time-frequency resources, wherein the second time-frequency resources are part or all of the time-frequency resources carrying the first signal.
The method of claim 5, wherein the method further comprises:

And the terminal equipment receives third indication information, wherein the third indication information is used for indicating the second time-frequency resource.
A method of communication, comprising:

the network equipment receives first indication information from the terminal equipment, wherein the first indication information is used for indicating a first parameter, the first parameter is used for indicating the terminal equipment to receive at least one first signal from the network equipment in a first time period, the maximum value of the times of detecting a first reference signal port on a first time-frequency resource, and the first time-frequency resource is part or all of time-frequency resources carrying the at least one first signal;

the network device determines the first parameter according to the first indication information.
The method according to claim 7, comprising:

the first parameter includes that the terminal equipment receives the at least one first signal in the first time period, and detects the maximum value of the total times of the first reference signal port for all resource groups in the first time-frequency resource on all antennas in at least one antenna used by the terminal equipment for receiving the at least one first signal;

Or, the first parameter includes that the terminal equipment receives the at least one first signal in the first time period, and on any antenna in at least one antenna used by the terminal equipment for receiving the at least one first signal, the maximum value of the total times of the first reference signal port is detected for all resource groups in the first time-frequency resource;

or, the first parameter includes that the terminal equipment detects, for receiving the at least one first signal in the first period of time, a maximum value of a total number of times of the first reference signal port on all antennas of at least one antenna used by the terminal equipment for receiving the at least one first signal for any resource group in the first time-frequency resource;

or, the first parameter includes that the terminal equipment detects, for receiving the at least one first signal in the first period of time, a maximum value of the number of the first reference signal ports for any resource group in the first time-frequency resource.
The method of claim 7, wherein the step of determining the position of the probe is performed,

the first parameter includes a first value, where the first value is a maximum value of a total number of times of the first reference signal port for all resource groups in the first time-frequency resource, where the terminal device is configured to receive the at least one first signal in the first period of time if 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;

Or, the first parameter includes a third value, where the third value is that, in a case where the number of resource groups in the first time-frequency resource is a fourth value, the terminal device detects, for receiving the at least one first signal in the first period, a maximum value of a total number of times of the first reference signal ports on all antennas of 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;

or, the first parameter includes a fifth value, where the fifth value is 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 under the condition that the number of the first reference signal ports is a sixth value on any antenna of at least one antenna used by the terminal device for receiving the at least one first signal in the first time period;

or, the first parameter includes a seventh value, where the seventh value is a maximum value of the number of resource groups included in the first time-frequency resource under the condition that the number of the at least one antenna used by the terminal device for receiving the at least one first signal is the eighth value, and on any antenna of the at least one antenna used by the terminal device for receiving the at least one first signal, the number of the first reference signal ports is detected for any resource group in the first time-frequency resource.
The method according to claim 9, wherein the method further comprises:

the network device receives second indication information from the terminal device, wherein the second indication information is used for indicating 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 for indicating the eighth value and the ninth value.
The method of claim 9, wherein after the network device determines the first parameter from the first indication information, the method further comprises:

and the network equipment determines a second time-frequency resource and the terminal equipment to receive the first signal according to the first parameter, and detects a 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 of or all of the time-frequency resources corresponding to the first signal, and the network equipment is determined according to the first parameter.
The method of claim 11, wherein the method further comprises:

and under the condition that the first maximum value is smaller than a first threshold value, the network equipment determines that at least one second reference signal port is included in a CDM group where the reference signal port associated with the first signal is located, wherein the second reference signal port is a reference signal port associated with an interference signal carried on part or all resource groups in the second time-frequency resource.
The method according to claim 12, wherein the method further comprises:

and the network equipment sends third indication information, wherein the third indication information is used for indicating the second time-frequency resource.
A communication device, comprising:

a processing unit, configured to determine first indication information, where the first indication information is used to indicate a first parameter, where the first parameter is used to indicate that the terminal device receives at least one first signal from a network device in a first period of time, and detects a maximum number of times of a first reference signal port on a first time-frequency resource, where the first time-frequency resource is part or all of time-frequency resources that carry the at least one first signal;

the communication unit is used for sending the first indication information to the network equipment.
The apparatus as claimed in claim 14, comprising:

the first parameter includes that the terminal equipment receives the at least one first signal in the first time period, and detects the maximum value of the total times of the first reference signal port for all resource groups in the first time-frequency resource on all antennas in at least one antenna used by the terminal equipment for receiving the at least one first signal;

Or, the first parameter includes that the terminal equipment receives the at least one first signal in the first time period, and on any antenna in at least one antenna used by the terminal equipment for receiving the at least one first signal, the maximum value of the total times of the first reference signal port is detected for all resource groups in the first time-frequency resource;

or, the first parameter includes that the terminal equipment detects, for receiving the at least one first signal in the first period of time, a maximum value of a total number of times of the first reference signal port on all antennas of at least one antenna used by the terminal equipment for receiving the at least one first signal for any resource group in the first time-frequency resource;

or, the first parameter includes that the terminal equipment detects, for receiving the at least one first signal in the first period of time, a maximum value of the number of the first reference signal ports for any resource group in the first time-frequency resource.
The apparatus as claimed in claim 14, comprising:

the first parameter includes a first value, where the first value is a maximum value of a total number of times of the first reference signal port for all resource groups in the first time-frequency resource, where the terminal device is configured to receive the at least one first signal in the first period of time if 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;

Or, the first parameter includes a third value, where the third value is that, in a case where the number of resource groups in the first time-frequency resource is a fourth value, the terminal device detects, for receiving the at least one first signal in the first period, a maximum value of a total number of times of the first reference signal ports on all antennas of 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;

or, the first parameter includes a fifth value, where the fifth value is 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 under the condition that the number of the first reference signal ports is a sixth value on any antenna of at least one antenna used by the terminal device for receiving the at least one first signal in the first time period;

or, the first parameter includes a seventh value, where the seventh value is a maximum value of the number of resource groups included in the first time-frequency resource under the condition that the terminal device is configured to receive the at least one first signal and the number of the first reference signal ports is detected for any one of the 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.
The apparatus of claim 16, wherein the device comprises a plurality of sensors,

the communication unit is further configured to send second indication information to the network device, where 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.
The apparatus of claim 17, wherein the device comprises a plurality of sensors,

the processing unit is further configured to determine, according to the first parameter, a reference signal port detected on a second time-frequency resource by the terminal device;

and when detecting that the maximum value of the number of the first reference signal ports is smaller than a first threshold value for any resource group in the second time-frequency resources, the terminal equipment detects part or all of the reference signal ports in a CDM group where the reference signal ports associated with the first signal are located on the second time-frequency resources, wherein the second time-frequency resources are part or all of the time-frequency resources carrying the first signal.
The apparatus as claimed in claim 18, comprising:

The communication unit is further configured to receive third indication information, where the third indication information is used to indicate the second time-frequency resource.
A communication device, comprising:

a communication unit, configured to receive first indication information from a terminal device, where the first indication information is used to indicate a first parameter, where the first parameter is used to indicate that the terminal device receives at least one first signal from a network device in a first period of time, and detects a maximum value of a number of times of a first reference signal port on a first time-frequency resource, where the first time-frequency resource is part or all of time-frequency resources that carry the at least one first signal;

and the processing unit is used for determining the first parameter according to the first indication information.
The apparatus of claim 20, wherein the device comprises a plurality of sensors,

the first parameter includes that the terminal equipment receives the at least one first signal in the first time period, and detects the maximum value of the total times of the first reference signal port for all resource block groups in the first time-frequency resource on all antennas in at least one antenna used by the terminal equipment for receiving the at least one first signal;

Or, the first parameter includes that the terminal equipment receives the at least one first signal in the first time period, and on any antenna in at least one antenna used by the terminal equipment for receiving the at least one first signal, the maximum value of the total times of the first reference signal port is detected for all resource block groups in the first time-frequency resource;

or, the first parameter includes that the terminal equipment detects, for receiving the at least one first signal in the first time period, a maximum value of a total number of times of the first reference signal port on all antennas of at least one antenna used by the terminal equipment for receiving the at least one first signal for any resource block group in the first time-frequency resource;

or, the first parameter includes that the terminal equipment detects, for receiving the at least one first signal in the first period of time, a maximum value of the number of the first reference signal ports for any resource block group in the first time-frequency resource.
The apparatus of claim 20, wherein the device comprises a plurality of sensors,

the first parameter includes a first value, where the first value is a maximum value of a total number of times of detecting the first reference signal port for all resource block groups in the first time-frequency resource, for the terminal device to receive the at least one first signal in the first period of time, in a case where 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;

Or, the first parameter includes a third value, where the third value is that, in a case where the number of resource block groups in the first time-frequency resource is a fourth value, the terminal device detects, for receiving the at least one first signal in the first time period, a maximum value of a total number of times of the first reference signal ports on all antennas in at least one antenna used by the terminal device for receiving the at least one first signal for any resource block group in the first time-frequency resource;

or, the first parameter includes a fifth value, where the fifth value is 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 under the condition that the terminal device receives the at least one first signal in the first time period, and detects, for any resource block group in the first time-frequency resource, the number of the first reference signal ports on any antenna in at least one antenna used by the terminal device to receive the at least one first signal, the number of the at least one antenna and the number of the resource block groups included in the first time-frequency resource;

or, the first parameter includes a seventh value, where the seventh value is a maximum value of the number of resource block groups included in the first time-frequency resource under the condition that the terminal device is configured to receive the at least one first signal and the number of the first reference signal ports is detected for any one resource block group in the first time-frequency resource on any one antenna of at least one antenna used by the terminal device to receive the at least one first signal.
The apparatus of claim 22, wherein the device comprises a plurality of sensors,

the communication unit is further configured to receive second indication information from the terminal device, where 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.
The apparatus of claim 22, wherein the device comprises a plurality of sensors,

the processing unit is further configured to determine, according to the first parameter, a second time-frequency resource and the terminal device to receive the first signal, and detect, for any resource block group in the second time-frequency resource, a first maximum value of the number of ports of the first reference signal, where the second time-frequency resource is a part of or all of time-frequency resources corresponding to the first signal, where the network device is determined according to the first parameter.
The apparatus of claim 24, wherein the device comprises a plurality of sensors,

the processing unit is further configured to determine that, when the first maximum value is smaller than a first threshold, at least one second reference signal port is included in a CDM group where the reference signal port associated with the first signal is located, where the second reference signal port is a reference signal port associated with an interference signal carried on part or all of a resource block group in the second time-frequency resource.
The apparatus of claim 25, wherein the device comprises a plurality of sensors,

the communication unit is further configured to send third indication information, where the third indication information is used to indicate the second time-frequency resource.
A communication device, comprising: at least one processor configured to invoke a program in a memory to perform the method of any of claims 1-6 or to perform the method of any of claims 7-13.
A chip comprising at least one processor and an interface;

the interface is used for providing program instructions or data for the at least one processor;

the at least one processor is configured to execute the program line instructions to implement the method of any one of claims 1-6 or to implement the method of any one of claims 7-13.
A computer readable storage medium storing instructions that, when executed, cause a computer to perform the method of any one of claims 1-6 or to perform the method of any one of claims 7-13.
A computer program product comprising a computer program which, when executed by a processor, implements the method of any of claims 1-6 or performs the method of any of claims 7-13.