WO2022165671A1

WO2022165671A1 - Communication method and apparatus

Info

Publication number: WO2022165671A1
Application number: PCT/CN2021/075076
Authority: WO
Inventors: 宣一荻; 谢信乾; 郭志恒
Original assignee: 华为技术有限公司
Priority date: 2021-02-03
Filing date: 2021-02-03
Publication date: 2022-08-11
Also published as: CN116671055A

Abstract

Embodiments of the present application provide a communication method and apparatus. The method comprises: a terminal device determines first indication information, wherein the first indication information is used for indicating a first parameter, and the first parameter is used for indicating a maximum value of the number of times for detecting a first reference signal port on a first time-frequency resource by the terminal device for receiving at least one first signal from a network device within a first time period, wherein the first time-frequency resource is part or all of a time-frequency resource carrying at least one first signal; and the terminal device sends the first indication information to the network device. In the method, the network device configures a reference signal port by means of a channel estimation capability reported by the terminal device, thus reducing the situation that the terminal device cannot suppress all or most of interference information, thereby improving the interference suppression effect of the terminal device.

Description

A communication method and device

technical field

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

Background technique

In the communication system, the space division multiplexing technology can improve the transmission efficiency of the channel, so it has been widely used. In the practical application of information exchange between the terminal and the base station, due to the space division multiplexing technology, the terminal may receive interference information from other terminals. Therefore, the terminal needs to perform interference suppression on the interference information. Specifically, the base station uses the space division multiplexing technology to send signals to multiple terminal equipments on the same time-frequency resource, and configures different reference signal ports for these terminal equipments. The terminal equipment determines the channel coefficients by performing channel estimation on the reference signal port to suppress all or most of the interference signals.

However, the interference suppression capability of a terminal device is limited by its channel estimation capability. The terminal equipment may not be able to perform channel estimation on all reference signal ports corresponding to all scheduling bandwidths or scheduling sub-bandwidths, so that it cannot perform interference suppression on all or most of the interference signals.

In the 5G wireless new access technology (New Radio Access Technology, NR) system, the base station cannot determine the channel estimation capability of the terminal device, resulting in limited channel estimation capability. The limited terminal equipment cannot perform channel estimation on all reference signal ports, cannot suppress all or most of the signals interfering with the terminal equipment, and the transmission performance is limited.

SUMMARY OF THE INVENTION

Embodiments of the present application provide a communication method and apparatus, in which a network device configures a reference signal port according to a channel estimation capability reported by a terminal device, so as to reduce the situation that the terminal device cannot suppress all or most of the interference information, thereby improving the performance of the terminal device. Interference suppression effect.

In a first aspect, an embodiment of the present application provides a communication method, including: a terminal device determining first indication information, where the first indication information is used to indicate a first parameter, and the first parameter is used to indicate that the terminal device is in a first time period In is the maximum value of the number of times of receiving at least one first signal from the network device and detecting the first reference signal port on the first time-frequency resource, where the first time-frequency resource is the time-frequency resource that carries the at least one first signal. Some or all of the terminal devices send the first indication information to the network device.

In this way, the terminal device reports the channel estimation capability, so that the network device configures the reference signal ports corresponding to multiple signals on the time-frequency resource 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. This enables the terminal equipment to determine all the interference signals and suppress them, thereby improving the interference suppression effect of the terminal equipment.

Optionally, the first parameter includes that the terminal device receives at least one first signal in the first time period, and on all antennas of at least one antenna used by the terminal device to receive the at least one first signal, the first The maximum value of the total number of times that all resource groups in the time-frequency resources detect the first reference signal port.

Or, the first parameter includes that the terminal device receives the at least one first signal in the first time period, and on any one of the at least one antenna used by the terminal device to receive the at least one first signal, the first For all resource groups in the time-frequency resources, the maximum value of the total number of times of detecting the first reference signal port.

Or, the first parameter includes that the terminal device receives at least one first signal during the first time period, and for any resource group in the first time-frequency resources, at least one resource used by the terminal device for receiving at least one first signal. On all antennas in one antenna, the maximum value of the total number of times of detecting the first reference signal port.

Or, the first parameter includes that the terminal device detects the maximum value of the number of first reference signal ports for any resource group in the first time-frequency resources in order to receive at least one first signal within the first time period. In this way, the representation manner of the first parameter is enriched, and it is convenient for the terminal device to select an appropriate manner to report the channel estimation capability according to the actual application scenario.

Optionally, the first parameter includes a first value, where the first value is, when the number of at least one antenna used by the terminal device for receiving the at least one first signal is the second value, the terminal device is in the first In order to receive at least one first signal within the time period, on any one of the at least one antenna used by the terminal device to receive the at least one first signal, for all resource groups in the first time-frequency resource, detect the first signal. The maximum value of the total number of times for a reference signal port.

Or, the first parameter includes a third value, where the third value is, in the case where the number of resource groups in the first time-frequency resource is the fourth value, the terminal device does not receive at least one first A signal, for any resource group in the first time-frequency resource, on all antennas of at least one antenna used by the terminal device to receive at least one first signal, the total number of times of detecting the first reference signal port maximum value.

Or, the first parameter includes a fifth value, where the fifth value is, when the terminal device receives the at least one first signal within the first time period, the at least one first signal used by the terminal device for receiving the at least one first signal. On any one of the root antennas, for any resource group in the first time-frequency resource, under the condition that the number of detected first reference signal ports is the sixth value, the number of at least one antenna is the same as that of the first time-frequency resource. The maximum value of the product of the number of contained resource groups.

Alternatively, the first parameter includes a seventh value, where the seventh value is the eighth value when the number of at least one antenna used by the terminal device for receiving the at least one first signal is the eighth value, and when the terminal device is used for receiving On any one of the at least one antenna used by the at least one first signal, for any resource group in the first time-frequency resource, under the condition that the number of detected first reference signal ports is the ninth value, the first The maximum number of resource groups included in the time-frequency resource. In this way, the way of expressing the first parameter is enriched, and it is convenient for the terminal device to select an appropriate way to report the channel estimation capability according to the actual application scenario.

Optionally, the method further includes: the terminal device sends second indication information to the network device, where the second indication information is used to indicate any of the second value, the fourth value, the sixth value, the eighth value or the ninth value. One item, or, the second indication information is used to indicate the eighth value and the ninth value. In this way, it is convenient for the network device to determine the channel estimation capability of the terminal device.

Optionally, the method further includes: the terminal device determines the reference signal port detected on the second time-frequency resource according to the first parameter; wherein, the terminal device detects the first time-frequency resource for any resource group in the second time-frequency resource. When the maximum value of the number of reference signal ports is less than the first threshold, the terminal device detects, on the second time-frequency resource, some or all of the reference signal ports in the CDM group where the reference signal port associated with the first signal is located. The frequency resources are part or all of the time-frequency resources that carry the first signal. In this way, the terminal device can preferentially detect the reference signal port in the CDM group where the reference signal port associated with the first signal is located according to its channel estimation, narrow the scope of detecting the reference signal port, reduce the number of channel estimation performed by the terminal device, and reduce signaling overhead.

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

In a second aspect, an embodiment of the present application provides a communication method, including: a network device receiving first indication information from a terminal device, where the first indication information is used to indicate a first parameter, and the first parameter is used to indicate that the terminal device is in the first The maximum number of times the first reference signal port is detected on the first time-frequency resource is the time-frequency resource that carries the at least one first signal in order to receive at least one first signal from the network device within a period of time. part or all of the parameter; the network device determines the first parameter according to the first indication information.

Or, the first parameter includes that the terminal device detects the maximum value of the number of first reference signal ports for any resource group in the first time-frequency resources in order to receive at least one first signal within the first time period.

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

Optionally, the method further includes: the network device receiving second indication information from the terminal device, where the second indication information is used to indicate any of the second value, the fourth value, the sixth value, the eighth value or the ninth value. One item, or, the second indication information is used to indicate 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 device determines, according to the first parameter, the second time-frequency resource and the terminal device, in order to receive the first signal, analyzes the second time-frequency resource. In any resource group in , the first maximum value of the number of the first reference signal ports is detected, wherein the second time-frequency resource is a part or all of the time-frequency resource corresponding to the first signal determined by the network device according to the first parameter.

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

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

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

Optionally, a part of the second reference signal ports included in the CDM group where the reference signal port associated with the first signal is located are: a second reference signal port whose power or strength received by the terminal device in the second reference signal port is greater than the second threshold , or, among the second reference signal ports, the correlation of the reference signal port associated with the first signal is greater than the reference signal port of the third threshold.

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

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

Optionally, when the sum of the number of the 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 port associated with the first signal is located, the number of reference signal ports associated with the first signal is The CDM group where the reference signal port is 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 device. The communication device may be a terminal device, or may be a chip or a chip system in the terminal device. The communication apparatus may include a processing unit and a communication unit. When the communication apparatus is a terminal device, the processing unit may be a processor, and the communication unit may be a communication interface or an interface circuit or a transceiver. The communication device may also include a storage unit, which may be a memory. The storage unit is used for storing 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 possible implementation manner of the first aspect. When the communication device is a chip in the terminal device, the processing unit may be a processor, and the communication unit may be a communication interface, such as an input/output interface, a pin or a circuit, and the like. 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 possible implementation manner of the first aspect. The storage unit may be a storage unit (eg, a register, a cache, etc.) in the chip, or a storage unit (eg, a read-only memory, a random access memory, etc.) located outside the chip in the terminal device. Exemplarily, the communication apparatus includes: a processing unit and a communication unit. A processing unit, configured to determine first indication information, where the first indication information is used to indicate a first parameter, and the first parameter is used to indicate that the terminal device is to receive at least one first signal from the network device within the first time period, and The maximum value of the number of times of detecting the first reference signal port on the first time-frequency resource, where the first time-frequency resource is part or all of the time-frequency resource that carries at least one first signal; the communication unit is used for sending to the network device first indication information.

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 item, 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 the reference signal port detected on the second time-frequency resource according to the first parameter; wherein, at the terminal device, for any resource group in the second time-frequency resource, the first reference signal port is detected. In the case where the maximum value of the number of signal ports is less than the first threshold, the terminal device detects, on the second time-frequency resource, some or all of the reference signal ports in the CDM group where the reference signal port associated with the first signal is located, and the second time-frequency The resources are part or all of the time-frequency resources that carry the first signal.

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 device. The communication apparatus may be a network device, or may be a chip or a chip system in the network device. The communication apparatus 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 also include a storage unit, which may be a memory. The storage unit is used for storing instructions, and the processing unit executes the instructions stored in the storage unit, so that the network device implements a communication method described in the second aspect or any possible implementation manner of the second aspect. When the communication device is a chip or a chip system in 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, a pin or a circuit, or the like. The processing unit executes the instructions stored in the storage unit, so that the network device implements a communication method described in the second aspect or any possible implementation manner of the second aspect. The storage unit may be a storage unit (eg, a register, a cache, etc.) in the chip, or a storage unit (eg, a read-only memory, a random access memory, etc.) located outside the chip in the network device.

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

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 item, 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, the second time-frequency resource and the terminal device to receive the first signal, and to detect the number of the first reference signal ports for any resource group in the second time-frequency resource. The first maximum value of , where the second time-frequency resource is a part or all of the time-frequency resource corresponding to the first signal determined by the network device according to the first parameter.

Optionally, the processing unit is further configured to, when the first maximum value is smaller than the first threshold, 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, and the second reference signal port includes at least one second reference signal port. The reference signal port associated with the interference signal carried on some or all of the resource groups in the second time-frequency resource.

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 device. The communication device may be a terminal device, or may be a chip or a chip system in the terminal device. The communication apparatus may include a processing unit and a communication unit. When the communication apparatus is a terminal device, the processing unit may be a processor, and the communication unit may be a communication interface or an interface circuit or a transceiver. The communication device may also include a storage unit, which may be a memory. The storage unit is used for storing 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 possible implementation manner of the first aspect. When the communication device is a chip in the terminal device, the processing unit may be a processor, and the communication unit may be a communication interface, such as an input/output interface, a pin or a circuit, and the like. The processing unit executes the instructions stored in the storage unit, so that the terminal device implements a communication method described in the third aspect or any possible implementation manner of the third aspect. The storage unit may be a storage unit (for example, a register, a cache, etc.) in the chip, or a storage unit (for example, a read-only memory, a random access memory, etc.) located outside the chip in the terminal device.

Exemplarily, the communication device includes a processing unit and a communication unit. a processing unit, configured to determine that the reference signal port detected on the second time-frequency resource includes some or all of the reference signal ports in the CDM group where the reference signal port associated with the first signal is located, and the second time-frequency resource is the first signal Corresponding time-frequency resources; a communication unit for receiving the first signal.

In an eighth aspect, an embodiment of the present application provides a communication device. The communication apparatus may be a network device, or may be a chip or a chip system in the network device. The communication apparatus 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 also include a storage unit, which may be a memory. The storage unit is used for storing instructions, and the processing unit executes the instructions stored in the storage unit, so that the network device implements a communication method described in the fourth aspect or any possible implementation manner of the fourth aspect. When the communication device is a chip or a chip system in 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, a pin or a circuit, or the like. The processing unit executes the instructions stored in the storage unit, so that the network device implements a communication method described in the second aspect or any possible implementation manner of the second aspect. The storage unit may be a storage unit (eg, a register, a cache, etc.) in the chip, or a storage unit (eg, a read-only memory, a random access memory, etc.) located outside the chip in the network device.

Exemplarily, the communication device includes a processing unit and a communication unit. A processing unit, configured to determine that the CDM group in which 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 associated with the interference signal carried on the second time-frequency resource The signal port, the second time-frequency resource is the time-frequency resource corresponding to the first signal; the communication unit is used for sending the first signal to the terminal device.

In a ninth aspect, the embodiments of the present application further provide a system, which includes at least one communication device mentioned in the embodiments of the present application, at least one device in the system can be integrated into a whole machine or equipment, or at least one device in the system A device can also be provided independently as an element or 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 of the foregoing systems.

In an eleventh aspect, an embodiment of the present application provides a chip, including at least one processor and an interface; the interface is used to provide program instructions or data for the at least one processor; the at least one processor is used to execute program line instructions, so as to realize the The method of the first aspect, the second aspect, the third aspect or the fourth aspect.

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

In a thirteenth aspect, an embodiment of the present application provides a communication device, including: at least one processor and an interface circuit, where the interface circuit is configured to provide information input and/or information output for the at least one processor, and the at least one processor is configured to A method as described in the first aspect, the second aspect, the third aspect or the fourth aspect is performed.

In a fourteenth aspect, embodiments of the present application provide a computer-readable storage medium, where the computer-readable storage medium stores instructions, and when the instructions are executed, the computer executes the first aspect, the second aspect, the third aspect, or the fourth aspect. method described in the aspect.

In a fifteenth aspect, an embodiment of the present application provides a computer program product, the program product includes a computer program, the computer program is stored in a readable storage medium, and at least one processor of an electronic device can read the computer program from the readable storage medium, At least one processor executes the computer program to cause the electronic device to perform the method of the first aspect, the second aspect, the third aspect or the fourth aspect.

It should be understood that the fifth to fifteenth aspects of the present application correspond to the technical solutions of the first aspect, the second aspect, the third aspect or the fourth aspect of the present application. The beneficial effects obtained are similar and will not be repeated here.

Description of drawings

FIG. 1 is a schematic structural diagram of a communication system provided by an embodiment of the present application;

2 is a schematic diagram of the existence of interference information in a first downlink communication provided by an embodiment of the present application;

3 is a schematic diagram of the existence of interference information in a second type of downlink communication provided by an embodiment of the present application;

4 is a schematic diagram of the existence of interference information in a third type of downlink communication provided by an embodiment of the present application;

5 is a schematic diagram of a 5G DMRS pattern provided by an embodiment of the present application;

6 is a schematic flowchart of a communication method provided by the present application;

7 is a schematic flowchart of a communication method provided by the present application;

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

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

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

11 is a schematic flowchart of a communication method provided by 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 provided by an embodiment of the present application.

Detailed ways

It should be noted that the network architecture and service scenarios described in the embodiments of the present application are for the purpose of illustrating the technical solutions of the embodiments of the present application more clearly, and do not constitute a limitation on the technical solutions provided by the embodiments of the present application. It can be seen that, with the evolution of the network architecture and the emergence of new service scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

The communication methods of the embodiments of the present application can be applied to various communication systems. Exemplarily, as shown in FIG. 1 , FIG. 1 is a schematic diagram of a communication system to which this application applies. Taking the communication system 100 including one network device 110 and two terminal devices 120 as an example for illustration, it can be understood that the communication system 100 may include multiple network devices and the coverage of each network device may include other numbers of terminal devices , which is not limited in the embodiments of the present application.

The network device 110 may be a device that communicates with the terminal device 120 (or referred to as a communication terminal, terminal). The 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 (FDD) system, an LTE time division duplex (TDD), a universal mobile communication system (universal mobile communication system) telecommunication system, UMTS), 5G communication system or new radio (NR) or other evolved communication systems, etc.

The network device 110 may be a transmission reception point (TRP), an evolved base station (evolved NodeB, eNB or eNodeB) in the LTE system, or a home base station (for example, a home evolved NodeB, or a home base station). Node B, HNB), base band unit (base band unit, BBU), it can also be a wireless controller in the cloud radio access network (cloud radio access network, CRAN) scenario, or the network device can be a relay station, an access point , vehicle equipment, wearable equipment and access network equipment in 5G network or access network equipment in the future evolved public land mobile network (PLMN) network, etc., can be access network equipment in WLAN An access point (AP) may be a gNB in a new radio system (new radio, NR) system, which is not limited in this embodiment of the present application. In a network structure, an 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 control plane CU node RAN equipment (CU-CP node) and user plane CU node (CU-UP node) and DU node.

The embodiments of the present application do not limit the specific technology and specific device form adopted by the network device. For the convenience of description, in all the embodiments of this application, the above-mentioned apparatuses for providing wireless communication functions for terminal equipment are collectively referred to as network equipment.

The terminal device 120 may be a device that provides voice or data connectivity to a user, such as a handheld device with a wireless connection function, a vehicle-mounted device, and the like. At present, some examples of terminals are: mobile phone (mobile phone), tablet computer, notebook computer, PDA, mobile internet device (MID), wearable device, virtual reality (virtual reality, VR) device, augmented reality (augmented reality, AR) equipment, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical surgery, and smart grids wireless terminal in transportation safety, wireless terminal in smart city, wireless terminal in smart home, cellular phone, cordless phone, session initiation protocol , SIP) telephones, wireless local loop (WLL) stations, personal digital assistants (PDAs), handheld devices with wireless communication capabilities, computing devices or other processing devices connected to wireless modems, automotive A device, a wearable device, a terminal device in a 5G network, or a terminal device in a future evolved public land mobile network (public land mobile network, PLMN), etc., are not limited in this embodiment of the present application.

As an example and not a limitation, in this embodiment of the present application, the terminal device may also be a wearable device. Wearable devices can also be called wearable smart devices, which are the general term for the intelligent design of daily wear and the development of wearable devices using wearable technology, such as glasses, gloves, watches, clothing and shoes. A wearable device is a portable device that is worn directly on the body or integrated into the user's clothing or accessories. Wearable device is not only a hardware device, but also realizes powerful functions through software support, data interaction, and cloud interaction. In a broad sense, wearable smart devices include full-featured, large-scale, complete or partial functions without relying on smart phones, such as smart watches or smart glasses, and only focus on a certain type of application function, which needs to cooperate with other devices such as smart phones. Use, such as all kinds of smart bracelets, smart jewelry, etc. for physical sign monitoring.

In addition, in the embodiments of the present application, the terminal device may also be a terminal device in an Internet of Things (IoT) system. IoT is an important part of the future development of information technology, and its main technical feature is that items pass through communication technology Connect with the network, so as to realize the intelligent network of human-machine interconnection and interconnection of things.

The terminal equipment in the embodiments of the present application may also be referred to as: user equipment (user equipment, UE), mobile station (mobile station, MS), mobile terminal (mobile terminal, MT), access terminal, subscriber unit, subscriber station, Mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user equipment, etc. The network device 110 and the terminal device 120 can be deployed on land, including indoor or outdoor, hand-held or vehicle-mounted; can also be deployed on water; and can also be deployed on aircraft, balloons and artificial satellites in the air. The embodiments of the present application do not limit the application scenarios of the network device 110 and the terminal device 120 .

It should be understood that, in the embodiments of the present application, a device having a communication function in the network/system 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 a communication function, and the network device 110 and the terminal device 120 may be the specific devices described above, which will not be repeated here. ; The communication device may also include other devices in the communication system 100, such as other network entities such as a network controller, a mobility management entity, etc., which are not limited in this embodiment of the present application.

In the embodiments of the present application, the terminal device or each network device includes a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer. This hardware layer includes hardware such as central processing unit (CPU), memory management unit (MMU), and memory (also called main memory). The operating system may be any one or more computer operating systems that implement business processing through processes, such as a Linux operating system, a Unix operating system, an Android operating system, an iOS operating system, or a Windows operating system. The application layer includes applications such as browsers, address books, word processing software, and instant messaging software. In addition, the embodiments of the present application do not specifically limit the specific structure of the execution body of the methods provided by the embodiments of the present application, as long as the program that records the codes of the methods provided by the embodiments of the present application can be executed to provide the methods provided by the embodiments of the present application. For example, the execution subject of the method provided by the embodiment of the present application may be a network device, or a functional module in the network device that can call a program and execute the program.

Additionally, various aspects or features of the present 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 in this application encompasses a computer program accessible from any computer-readable device, carrier or medium. For example, computer readable media may include, but are not limited to, magnetic storage devices (eg, hard disks, floppy disks, or magnetic tapes, etc.), optical disks (eg, compact discs (CDs), digital versatile discs (DVDs) etc.), smart cards and flash memory devices (eg, erasable programmable read-only memory (EPROM), card, stick or 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" may include, but is not limited to, wireless channels and various other media capable of storing, containing, and/or carrying instructions and/or data.

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

Exemplarily, as shown in FIG. 2 , FIG. 2 is a schematic diagram of existence of interference information in the first type of downlink communication provided by an embodiment of the present application. The communication system 200 may include a network device 210 , a terminal device 220 and a terminal device 230 . The network device 210 sends two different pieces of information to the terminal device 220 and the terminal device 230 on the same time-frequency resource. For example, the network device 210 sends the first information to the terminal device 220, and the network device 210 sends the second information to the terminal device 230. . When the terminal device 220 receives the first information, it also receives the second 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 can be understood that the communication system 200 may include multiple network devices, and the coverage of each network device may include other numbers of terminal devices, which are not limited in this embodiment of the present application.

Exemplarily, as shown in FIG. 3 , FIG. 3 is a schematic diagram of the existence of interference information in the second type of downlink communication provided by this embodiment of the present application. The communication system 300 may include a network device 310 , a network device 320 , a terminal device 330 and a terminal device 340 . On the same time-frequency resource, the network device 310 sends downlink information to the terminal device 330 , and the network device 320 in another adjacent area receives the uplink information from the terminal device 340 . When the terminal device 330 receives the downlink information, it also receives the uplink information sent by the terminal device 340 . For terminal device 330, the uplink information is interference information. It can be understood that the communication system 300 may include multiple network devices, and the coverage of each network device may include other numbers of terminal devices, which are not limited in this embodiment of the present application.

Exemplarily, as shown in FIG. 4 , FIG. 4 is a schematic diagram of the existence of interference information in the third type of downlink communication provided by the embodiment of the present application. The communication system 400 may include a network device 410 , a terminal device 420 and a terminal device 430 . The network device 410 is a full-duplex network device, that is, the network device 410 can transmit and receive simultaneously on the same frequency domain resource. When the network device 410 sends downlink information to the terminal device 420 , the terminal device 430 sends uplink information to the network device 410 . When receiving the downlink information, the terminal device 410 will receive the uplink information sent by the terminal device 430 . For terminal device 410, the uplink information is interference information. It can be understood that the communication system 400 may include multiple network devices, and the coverage of each network device may include other numbers of terminal devices, which are not limited in this embodiment of the present application.

In a communication system, the multiple access method usually adopts an orthogonal frequency division multiple access (orthogonal frequency division multiplexing access, OFDMA) method. The main feature of OFDM is that the transmission resources are divided into mutually orthogonal time-frequency resource elements (REs), and the signals sent by the sender are all carried on the REs and transmitted to the receiver. They are orthogonal to each other, so that the receiving end can separately receive the signal sent on each RE.

Due to the fading characteristics of the wireless channel, the signal carried on the RE will be distorted after being transmitted through the wireless channel, and the distortion is usually called the channel coefficient. In order to be able to recover the signal at the receiving end, it is necessary to estimate the channel coefficients. 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. Further, the receiving end may also interpolate the channel coefficients on other REs according to the channel coefficients obtained by the estimation, and demodulate the data signal by using the channel coefficients obtained by the estimation.

Exemplarily, it is assumed that the transmitting end is a base station and the receiving end is a terminal device. The base station is equipped with multiple antennas to realize spatial multiplexing transmission using multi-input multi-output (MIMO) technology, that is, multiple data streams are transmitted on the same time-frequency resources, and each data stream is transmitted on an independent Each spatial layer can be mapped to different antenna ports and sent to different terminals. The channel coefficients from different antenna ports at the base station to each terminal are different. In order for the terminal to obtain information transmitted on multiple spatial layers, it is necessary to estimate the channel coefficient between each antenna port at the base station and the terminal. Therefore, it is necessary to be Each antenna port is configured with different DMRSs, and the DMRSs corresponding to different antenna ports can be multiplexed by means of time division, frequency division, and code division.

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

However, the channel estimation capabilities of the terminal equipment are different, and it may happen that the channel estimation ability of the terminal equipment is not enough to detect all DMRS ports, so that the channel estimation is not performed on the DMRS ports with strong interference, and the channels corresponding to the DMRS ports with strong interference are not obtained. coefficient, the interference suppression cannot be performed on the DMRS port with strong interference, resulting in poor interference suppression effect of the terminal.

Based on this, an embodiment of the present application provides a communication method, in which a terminal device reports the channel estimation capability by sending indication information, so that the network device configures the reference signal port according to the channel estimation capability of the terminal device, thereby reducing the inability of the terminal device to perform all the reference signal ports. In the case of performing channel estimation, the terminal equipment can determine all the interference signals and suppress them, thereby improving the interference suppression effect of the terminal equipment.

In order to facilitate understanding of the embodiments of the present application, some terms involved in the present application are briefly described first.

1. Wireless channel: The data signal transmission channel using wireless signal as the transmission medium is a metaphor for the path between the sender and the receiver in wireless communication, which can be used for information transmission of network equipment and terminal equipment.

2. Channel coefficient: The wireless channel has fading characteristics, and the signal carried on the time-frequency resource element (RE) is distorted after channel transmission, and the channel distortion is called the channel coefficient.

3. Channel estimation: the process of estimating the channel coefficients from the received signal. Exemplarily, a reference signal-based solution can be used for channel estimation. For example, the transmitting end transmits a known signal on a specific RE, and the receiving end performs channel estimation on the channel coefficients according to the received signal and the known signal.

4. Antenna port: In the 5G NR system, the antenna port is the logical port used for transmission, and one antenna port includes multiple physical antennas. From the receiver's point of view, each antenna port corresponds to an independent wireless channel.

5. A demodulation reference signal (DMRS): a reference signal used for recovering a received signal. The receiving end can determine the fading characteristic of the wireless channel (ie, 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 the channel coefficients from different antenna ports to the terminal are not the same, in order for the receiver to obtain the information transmitted on multiple spatial layers, it is necessary to estimate the channel coefficient between each antenna port and the terminal. Therefore, it is necessary to configure different DMRSs for each antenna port, and the DMRSs corresponding to different antenna ports can be multiplexed by means of time division, frequency division, and code division. Currently, 5G NR systems can support up to 12 MDRS ports.

Exemplarily, FIG. 5 is a schematic diagram of a 5G DMRS pattern provided by an embodiment of the present application. As shown in Figure 5, the horizontal direction represents the time domain, the vertical direction represents the frequency domain, and each small square represents an RE. DMRS port 0 and DMRS port 1 correspond to REs 0, 1, 6, and 7, and perform signal transmission on these four REs at the same frequency; DMRS port 2 and DMRS port 3 correspond to REs 2, 3, 8, and 9. DMRS port 4 and DMRS port 5 correspond to REs 4, 5, 10 and 11, and the four REs perform signal transmission on the same frequency at the same time. 108 REs in FIG. 5 form a resource block, which carries control information and data information.

6. Code division multiplexing (CDM): Also known as orthogonal multiplexing, it is a multiplexing method that distinguishes various original signals by different codes. Wherein, the encoding has the mathematical characteristics of a large value of the autocorrelation function and a small value of the cross-correlation function, and the terminal device can use the mathematical characteristics to distinguish and select the original signal.

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

7. Time unit: for example, it may be a slot, a subframe, a symbol, or other time units defined in the future. It should be noted that the time unit is a unit of measurement in the time domain, not necessarily the smallest time unit.

It can be understood that, the descriptions related to time slots in the following embodiments may also be replaced by other time units, such as subframes, symbols, and the like. This embodiment of the present application does not limit this.

8. Subcarriers: The frequency domain resources are divided into several subresources, and each subresource in the frequency domain can be called a subcarrier. Subcarriers can also be understood as the minimum granularity of frequency domain resources;

9. Resource block: One resource block includes N consecutive 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 a resource block can also be other values;

10. Spatial layer: In a wireless communication system, the base station is equipped with multiple antennas to realize spatial multiplexing transmission using multi-input multi-output (MIMO) technology, that is, transmitting multiple antennas on the same time-frequency resource. Uncorrelated data streams, each uncorrelated data stream is transmitted on a separate spatial layer, and each spatial layer will be mapped to a different antenna port for transmission.

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

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

The communication method provided by the embodiments of the present application will be described in detail below with reference to the accompanying drawings. FIG. 6 is a schematic flowchart of a communication method provided by the present application. As shown in FIG. 6 , the method of an embodiment of the present application is as follows:

S601. The terminal device determines first indication information, where the first indication information is used to indicate a first parameter, and the first parameter is used to indicate that the terminal device is to receive at least one first signal from a network device within a first time period, and in the first The maximum value of the number of times of detecting the first reference signal port on a time-frequency resource, where the first time-frequency resource is part or all of the time-frequency resource carrying at least one first signal.

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

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

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

In this embodiment of the present application, the first reference signal may be a DMRS, or may be another reference signal, which is not limited in this embodiment of the present application. The first reference signal port may be a DMRS port, or another reference signal port, which is not limited in this embodiment of the present application.

In this embodiment of the present application, the first parameter is used to indicate the maximum number of times that the terminal device can perform channel estimation or detection on the reference signal port on the first time-frequency resource in order to receive the first signal within the first time period. The first parameter can quantitatively describe the channel estimation capability of the terminal device or the capability of the terminal device to detect the first reference signal port. The larger the value of the first parameter, the stronger the channel estimation capability of the terminal device and the capability of the terminal device to detect the first reference signal port. the stronger.

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 should be understood that the first parameter is fixed in the first time period and does not vary with the number of at least one first signal received by the terminal device in the first time period. That is to say, the terminal device determines the first parameter, and the first parameter is limited by resources such as hardware and chips allocated by the terminal device for detecting the first reference signal port, and can be predetermined for a terminal device within the first time period fixed value of ,

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. This embodiment of the present application does not specifically limit this.

Optionally, 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 device sends first indication information to the network device.

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

In the embodiment of the present application, the terminal device sends the first indication information to the network device and reports its channel estimation capability, so that the subsequent network device can determine the number of terminals using the same time-frequency resource to transmit signals according to the channel estimation capability, so that the terminal with weak channel estimation The device can detect and suppress most or all of the interference to give full play to its interference suppression capabilities.

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

In this embodiment of the present application, the terminal device may send the first indication information multiple times, or may only send the first indication information once. This embodiment of the present application does not limit this. Exemplarily, the terminal device may perform this step each time before receiving the downlink signal, and report its channel estimation capability, so as to facilitate subsequent network device configuration of the signal. The terminal device may also perform this step only once after accessing the communication system, so as 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 device determines the first parameter according to the first indication information.

In this embodiment of the present application, the network device may obtain the first parameter by parsing the first indication information.

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

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

To sum up, in this embodiment of the present application, the terminal device reports the channel estimation capability by sending 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 inability of the terminal device to evaluate all the reference signals. The case where the transmission performance is lost due to the signal estimation of the port, for example, the network device determines multiple interference signals on the same time-frequency resource according to the channel estimation capability of the terminal device, and then configures the reference signal ports corresponding to the multiple interference signals, thereby reducing the number of terminals. In the case where the device cannot perform channel estimation on all reference signal ports, the terminal device can determine all the interference signals and suppress them, thereby improving the interference suppression effect of the terminal device.

Optionally, on the basis of the embodiment corresponding to FIG. 6 , in a possible implementation, since the implementation mode of the terminal device and the adopted channel estimation algorithm are different, the first parameter may have the following modes:

Manner 1, the first parameter includes that the terminal device receives at least one first signal during the first time period, and on all antennas of at least one antenna used by the terminal device to receive the at least one first signal, for the first time period. The maximum value of the total number of times that the resource group in the frequency resource detects the first reference signal port.

It should be understood that, in the first manner, the first parameter indicates the capability of the terminal device to detect the reference signal port, and it can also be said that the first parameter indicates the channel estimation capability of the terminal device. The capability of the terminal device to detect reference signal ports 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. related. Thus, in order to receive at least one first signal within the first time period, the terminal device detects the first reference signal port on the resource group on the first time-frequency resource on all antennas used, and the terminal device detects the first reference signal port The maximum value of the total number of times can be the first parameter.

Mode 2, the first parameter includes that the terminal device receives at least one first signal in the first time period, and on any antenna of the at least one antenna used by the terminal device to receive the at least one first signal, for the first signal. For all resource groups in a time-frequency resource, detect the maximum value of the total number of times of the first reference signal port;

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

Mode 3, the first parameter includes, for the terminal device to receive at least one first signal in the first time period, for any resource group in the first time-frequency resources, the parameter used by the terminal device to receive at least one first signal. On all antennas in at least one antenna, the maximum value of the total number of times of detecting the first reference signal port;

It can be understood that, due to different implementations and channel estimation algorithms of the terminal device, the capability of the terminal device to detect the reference signal port may be independent of the number of resource groups included in the first time-frequency resource. That is to say, in order to receive at least one first signal within the first time period, for any resource group in the first time-frequency resources, the terminal device uses at least one first signal used by the terminal device to receive at least one first signal. On all the antennas, the maximum value of the total number of times of detecting the first reference signal port does not vary with the number of resource groups included in the first time-frequency resource. Therefore, in order to receive at least one first signal in the first time period, the terminal device detects the first reference signal port on any resource group in the first time-frequency resources on all antennas in use, and the terminal device detects the first reference signal port. The maximum value of the total number of signal ports may be the first parameter.

Manner 4, the first parameter includes detecting the maximum value of the number of the first reference signal ports for any resource group in the first time-frequency resources for the terminal device to receive at least one first signal in the first time period.

It can be understood that, due to different implementations and channel estimation algorithms of the terminal device, the capability of the terminal device to detect reference signal ports may be independent of the number of receiving antennas of the terminal device and the number of resource groups included in the first time-frequency resource. That is to say, in order to receive at least one first signal in the first time period, the terminal device detects the maximum value of the number of first reference signal ports for any resource group in the first time-frequency resources, and does not follow the reception of the terminal device. The number of antennas and the number of resource groups included in the first time-frequency resource vary. In order to receive at least one first signal within the first time period, the terminal device detects the first reference signal port in any resource group in the first time-frequency resources, and the terminal device detects the maximum value of the total number of times the first reference signal port can be the first parameter.

Optionally, in another possible implementation, the first parameter may have the following representations.

Manner 5, the first parameter includes a first value, where the first value is, in the case that the number of at least one antenna used by the terminal device for receiving the at least one first signal is the second value, the terminal device at the first time In order to receive at least one first signal in the segment, on any one of the at least one antenna used by the terminal device to receive the at least one first signal, for all resource groups in the first time-frequency resources, detect the first signal. The maximum value of the total number of reference signal ports.

In this 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, specified in the standard, preset by the network device, and preset by the terminal device. The second value may also not be predefined. Exemplarily, the terminal device may indicate the second value by sending the second indication information.

It can be understood that the number of detections performed by the terminal device on the multiple antennas used to receive the signal is the same. When the number of antennas used by the terminal device to receive the first signal is known, the first value may be the number of antennas used by the terminal device to receive the first signal. For all resource groups in a time-frequency resource, the maximum value of the total number of times of detecting the first reference signal port.

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

Manner 6, the first parameter includes a third value, where the third value is, in the case where the number of resource groups in the first time-frequency resource is the fourth value, the terminal device does not receive at least one resource during the first time period. For the first signal, for any resource group in the first time-frequency resource, the total number of times of detecting the first reference signal port on all antennas in the at least one antenna used by the terminal device to receive the at least one first signal the maximum value of .

In this 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, specified in the standard, preset by the network device, and preset by the terminal device . The fourth value may also not be predefined. Exemplarily, the terminal device may indicate the fourth value by sending the second indication information.

It can be understood that the number of times of detection of the terminal device in each resource group is the same, when the number of resource groups included in the first time-frequency resource is known. The third value is the maximum value of the total number of times the terminal device detects the first reference signal port for any resource group in the first time-frequency resources on all antennas used.

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

Manner 7, the first parameter includes a fifth value, where the fifth value is, when the terminal device receives the at least one first signal within the first time period, the at least one first signal used by the terminal device for receiving the at least one first signal. On any antenna in one antenna, for any resource group in the first time-frequency resource, under the condition that the number of detected first reference signal ports is the sixth value, the number of at least one antenna is the same as that of the first time-frequency resource. The maximum value of the product of the number of resource groups that the resource contains;

In this 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: specified in the standard, preset by the network device, and preset by the terminal device. set. The sixth value may also not be predefined. Exemplarily, the terminal device may indicate the sixth value by sending the second indication information.

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

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

Manner 8, the first parameter includes a seventh value, where the seventh value is the eighth value when the number of at least one antenna used by the terminal device for receiving the at least one first signal is the eighth value, and when the terminal device is used for receiving the at least one first signal On any one of the at least one antenna used to receive the at least one first signal, for any resource group in the first time-frequency resource, under the condition that the number of detected first reference signal ports is the ninth value, the The maximum value of the number of resource groups included in a time-frequency resource.

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

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

When neither the eighth value nor the ninth value is predefined. Exemplarily, the terminal device may indicate the eighth value and the ninth value by sending the second indication information.

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

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

Optionally, after S603, it may further include: the network device determines the reference signal port according to the first parameter, and the terminal device determines the detected reference signal port according to the first parameter. Exemplarily, FIG. 7 is a schematic flowchart of a communication method provided by an embodiment of the present application. As shown in FIG. 7 , the method is as follows:

S701. A terminal device determines first indication information. The first indication information is used to indicate a first parameter, and the first parameter is used to instruct the terminal device to detect the first reference signal on the first time-frequency resource in order to receive at least one first signal from the network device within the first time period. The maximum number of times for the port.

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

S703. The network device determines the first parameter according to the first indication information.

S704. The terminal device sends the second indication information to the network device.

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

The terminal device sends second indication information to the network device, where 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 Eighth and ninth values.

It should be noted that the terminal device may execute S702 and S704 at the same time. The terminal device may also execute S704 before executing S702. This embodiment of the present application does not specifically limit the execution time of S704.

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

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 signal on other time-frequency resources except the second time-frequency resource in the time-frequency resource corresponding to the first signal is 0. That is to say, in the time-frequency resource corresponding to the first signal, the number of interfering signals on other time-frequency resources except the second time-frequency resource 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 resources are resource groups 0, 1, and 2, and the network device can transmit simultaneously on resource groups 0, 1, and 2 For the first signal and the interference signals 0 and 1, only the first signal is transmitted on resource group 3.

It should be noted that the network device may determine whether the channel detection capability of the terminal device is limited according to the first parameter, and then determine the second time-frequency resource. Exemplarily, the network device may judge whether the channel detection capability of the terminal device is limited by comparing the first parameter with a preset threshold. When the first parameter is lower than the preset threshold, the network device determines that the terminal device is a terminal with limited detection capability, and the network device preferentially configures it in the time-frequency resource with less interference signals, and when the second time-frequency resource is the first time-frequency resource When a part of the time-frequency resource corresponding to a signal is used, the network device may determine that only the first signal exists on other time-frequency resources other than the second time-frequency resource in the time-frequency resource corresponding to the first signal.

Optionally, the network device determines that the terminal device receives the first signal according to the first parameter, and detects the first maximum value of the number of first reference signal ports for any resource group in the second time-frequency resources. According to the different implementations of the first parameter, there are the following determination methods:

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

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

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

When the first parameter adopts the fourth mode, the network device determines the first maximum value according to the first parameter, and the first maximum value is the number of the first reference signal ports indicated by the first parameter. Exemplarily, the network device determines, according to the first parameter, that the terminal device is to receive the first signal within the first time period, and for any resource group in the first time-frequency resource, the maximum number of detected first reference signal ports is: N4, the network device determines that the first maximum value is N4.

When the first parameter adopts mode five, mode six, mode seven, or mode eight, the network device may determine according to the first parameter that the terminal device is to receive the first signal within the first time period, and the terminal device is used to receive the first signal in the first time period. On all antennas of at least one antenna used by a signal, the maximum value of the total number of times the first reference signal port is detected for all resource groups in the second time-frequency resource, according to the maximum value and the number of terminal equipment receiving antennas and The number of resource groups included in the second time-frequency resource determines the first maximum value.

S706. In the case where the first maximum value is less than the first threshold, the network device determines that the CDM group where the reference signal port associated with the first signal is located includes at least one second reference signal port, where the second reference signal port is the one carried on the first reference signal port. Reference signal ports associated with interference signals on some or all resource groups in the two time-frequency resources.

In this embodiment of the present application, the interference signal may be a signal that interferes with the communication of the terminal device, and the specific reason for the generation of the interference signal can be referred to the descriptions in FIGS. 2 to 4 , which will not be repeated here.

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

S706 takes the reference signal port as a DMRS port as an example, and the specific implementation can be as follows.

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

Optionally, when the first maximum value is less 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 carried on the second time-frequency DMRS ports associated with interfering signals on some or all resource groups in the 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 that does not carry data corresponding to the second time-frequency resource. Specifically, the first threshold may be determined according to the DMRS pattern configured by the high 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 high layer parameter and the maximum number of DMRS 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 number of DMRS preamble symbols is 1, the number of DMRS ports corresponding to any resource group in the second time-frequency resource may be determined according to the number of CDM groups that are not available for carrying data indicated by the antenna port field. When the number of symbols is set to 2, the number of DMRS ports corresponding to any resource group in the second time-frequency resource can be determined according to the number of DMRS preamble symbols indicated by the antenna port field and the number of CDM groups that cannot be used to carry data. For example, if the DMRS type is determined to be type 1 according to high-level parameters, the maximum number of DMRS preamble symbols is 2, when the antenna port field in the DCI indicates that the number of preamble symbols is 1, and the number of CDM groups that cannot be used to carry data is 3, Then it can be determined that the first threshold is 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 understood that if the first maximum value is smaller than the first threshold, the terminal detection capability is limited. For a terminal device with limited detection capability, the network device preferentially determines the DMRS port associated with the first signal, and then the network device may determine that the DMRS port associated with the interference signal is in the CDM group where the DMRS port associated with the first signal is located. Exemplarily, the DMRS port associated with the signal corresponding to the terminal device by the network device corresponds to CDM group 0, then the network device preferentially associates the DMRS port in the CMD group 0 with the interference signal, if the DMRS port in the CDM group 0 is not enough to associate all If there are interference signals, or there are some interference signals that cannot be associated with the DMRS ports in CDM group 0, the interference signals are associated with DMRS ports in CDM groups other than CDM group 0.

It should be noted that, in a communication system, the DMRS ports included in the CDM group in the time-frequency resources are usually standardized. After determining the time-frequency resource, the network device can determine the interference signal at the same time, and then determine the CDM group where the DMRS port associated with the interference signal is located. Further, the network device can select the CDM group where the associated DMRS port is located for transmitting downlink signals. DMRS port, so that the DMRS port transmitting the first signal and the DMRS port associated with the interference signal may be located in the same CDM group. Exemplarily, as shown in FIG. 5 , CDM group 0 includes DMRS port 0 and DMRS port 1 . CDM group 1 includes DMRS port 2 and DMRS port 3. If DMRS port 1 is associated with interference signal 1, and the DMRS port associated with interference signal 1 is in CDM group 0, DMRS port 0 for transmitting the first signal may be selected in CDM group 0. If DMRS port 2 is associated with interference signal 1, the DMRS port associated with interference signal 1 is 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, description will be given by taking an example that the CDM group where the reference signal port associated with the first signal is located is the CDM group corresponding to the DMRS port associated with the first signal.

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 the DMRS port associated with the interference signal carried on some or all of the resource groups in the second time-frequency resource .

There are several optional implementations 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 port associated with the first signal is located (or can be understood as the maximum number of DMRS ports that the CDM group can include) , the network device determines that the CDM group where the DMRS port associated with the first signal is located may include all second DMRS ports, where the second DMRS port is the DMRS associated with the interference signal carried on some or all of the resource groups in the second time-frequency resource port.

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

Exemplarily, FIG. 8 is a schematic diagram of a first DMRS port configuration provided by an embodiment of the present application. As shown in Figure 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, CDM group 2 includes DMRS port 4, DMRS port 9 5. DMRS port 10 and DMRS port 11. CDM group 0, CDM group 1 and CDM group 2 do not carry data.

If the DMRS port 0 in FIG. 8 is the DMRS port associated when the network device sends the first signal to the terminal device, the corresponding CDM group 0 is the CDM group where the reference signal port associated with the first signal is located, and the other CDM groups are the CMD groups 1 and 1. CMD group 2. Assuming that there are three interference signals, the number of DMRS ports associated with the interference signals is less than the number of DMRS ports included in the CDM group where the reference signal port associated with the first signal is located, and it is configured in the 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 Part of the second DMRS ports, where the second DMRS ports are DMRS ports associated with interference signals carried on some or all of the resource groups in the second time-frequency resource. That is to say, the CDM group where the reference signal port associated with the first signal is located cannot include all the DMRS ports associated with the interference signal. Among the DMRS ports associated with the interference signal, some DMRS ports are included in the location where the reference signal port associated with the first signal is located. CDM group, and another part of DMRS ports are included in other CDM groups.

It can be understood 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 the interference signals, the network device associates some of the interference signals with DMRS ports in other CDM groups. In this way, the range of the DMRS ports associated with some of the interference signals is limited, thereby reducing the number of channel estimation performed by the terminal device and reducing signaling overhead.

Exemplarily, FIG. 9 is a schematic diagram of a second DMRS port configuration provided by an embodiment of the present application. As shown in Figure 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, CDM group 2 includes DMRS port 4, DMRS port 9 5. DMRS port 10 and DMRS port 11. CDM group 0, CDM group 1 and CDM group 2 do not carry data.

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

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 part of the second DMRS ports, wherein, The part of the second DMRS ports is: in the second DMRS ports, the power or strength received by the terminal equipment is greater than the second threshold and the DMRS ports associated with the interference signals carried on some or all of the resource groups in the second time-frequency resource, or, the first Among the DMRS ports associated with the interference signals carried on some or all of the resource groups in the second time-frequency resource, among the two DMRS ports, the correlation of the DMRS ports associated with the first signal is greater than the 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 interference signal may be an interference signal whose power or strength received by the terminal device is greater than the second threshold. The weak interference signal may be an interference signal whose power or strength received by the terminal device is less than or equal to the second threshold.

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 strongly interfered DMRS ports, wherein, The strong interfering DMRS port is the DMRS port associated with the interference signal carried on some or all of the resource groups in the second time-frequency resource and the power or strength received by the terminal device in the second DMRS port is greater than the second threshold, or, carried on the second DMRS port. The correlation of the DMRS ports associated with the first signal among the DMRS ports associated with the interfering signals on some or all of the resource groups in the time-frequency resources is greater than the DMRS ports of the third threshold.

It should be noted that, the greater the correlation between the DMRS ports, the greater the interference strength of the corresponding interference signal. The network device includes the DMRS ports whose correlation with the DMRS port associated with the first signal is greater than the third threshold value among the DMRS ports associated with the interference signal in the CDM group where the reference signal port associated with the first signal is located, causing interference with greater interference intensity. The range of DMRS ports associated with the signal is limited, and the corresponding terminal device preferentially detects the DMRS port of the CDM group where the reference signal port associated with the first signal is located. In this way, the terminal device can preferentially detect strong interference signals and suppress them.

In yet another optional embodiment, the CDM group where the DMRS port associated with the first signal is located includes part of the second DMRS port, where the part of the second DMRS port is: the power received by the terminal device in the second DMRS port or The DMRS port associated with the interference signal carried on some or all of the resource groups in the second time-frequency resource with the strength greater than the second threshold, or the second DMRS port carried on some or all of the resource group in the second time-frequency resource. Among the DMRS ports associated with the interference signal, the correlation of the DMRS ports associated with the first signal is greater than the DMRS ports of the third threshold.

It can be understood 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 limits the range of DMRS ports associated with the strong interference signal. In this way, the terminal device can preferentially detect the strong interference signal and suppress it, so as to give full play to the interference suppression capability of the terminal device.

Exemplarily, FIG. 10 is a schematic diagram of a third DMRS port configuration provided by this embodiment of the present application. As shown in Figure 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, CDM group 2 includes DMRS port 4, DMRS port 9 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, and 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 were CDM group 1 and CDM group 2. The network device has 5 interference signals on the same time-frequency resource, numbered as interference signals 0-4. Wherein, the interference signal 1 and the interference signal 3 are strong interference signals, then the DMRS ports associated with the interference signal 1 and the interference signal 3 are the DMRS port 1 and the DMRS port 6, that is, the DMRS port associated with the strong interference signal is associated with the first signal The DMRS ports are located in the same CDM group 0. Since the interference signal 0, the interference signal 2 and the interference signal 4 are weak interference signals, the interference signal 0, the interference signal 2 and the interference signal 4 can be combined with the DMRS port 2 and the DMRS port 5. The DMRS port associated with the DMRS port 11, that is, the DMRS port associated with the weak interference signal, 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 capabilities, if the degree of mutual interference between the two downlink signals is strong, the DMRS ports associated with the two downlink signals in the same CDM group. If the degree of mutual interference between the two downlink signals is weak, the DMRS ports associated with the two downlink signals may not be in the same CDM group. In this way, strong interfering signals can be deployed to the terminal equipment to the greatest extent possible.

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

Exemplarily, there are three CDM groups in the resource block sent by the network device, which are CDM group 0, CDM group 1, and CDM group 2, respectively. CDM group 0 and CDM group 1 are CDM groups not used for data transmission, and CDM group 2 is a CDM group used for data transmission. When the DMRS port associated when the network device sends the downlink signal to the terminal device is a DMRS port in CDM group 0, CDM group 0 is the CDM group where the reference signal port associated with the first signal is located, and CDM group 1 is another CDM group.

S707. The network device sends third indication information to the terminal device.

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

In this embodiment of the present application, the third indication information is used to indicate the second time-frequency resource. In this way, it is convenient for the terminal device to determine the second time-frequency resource, receive the first signal, and demodulate the required information.

It should be noted that, S707 in this embodiment of the present application is an optional step, and whether to execute it may be determined according to an actual application scenario. The sequence of steps in the embodiments of the present application may also be adjusted according to actual application scenarios, which are not specifically limited in the embodiments of the present application.

S708. The terminal device determines the reference signal port detected on the second time-frequency resource according to the first parameter; wherein, the terminal device detects, for any resource group in the second time-frequency resource, the number of the first reference signal port. In the case where the maximum value is less than the first threshold, the terminal device detects, on the second time-frequency resource, some or all of the reference signal ports in the CDM group where the reference signal port associated with the first signal is located, and the second time-frequency resource is used to carry the first signal. Part or all of the time-frequency resources of a signal.

It should be noted 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 the manner in which the network device determines in step S705. This embodiment of the present application will not be repeated here.

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

It should be noted that, in the usual processing manner, the terminal device has two channel estimation manners for description.

Mode 1, the terminal performs blind detection on all DMRS ports to estimate channel coefficients of all DMRS ports, and selects a DMRS port with stronger interference for interference suppression according to the obtained channel coefficients of each DMRS port.

However, the method of performing blind detection on all DMRS ports has large blind detection times and high complexity, resulting in large signaling overhead and low interference suppression efficiency. In particular, when the terminal performs blind detection on all DMRS ports on each resource block, the number of times, complexity and signaling overhead of blind detection of DMRS ports by the terminal are further increased.

In addition, this method has high requirements on the detection capability of the terminal, and is not easy to implement. The terminal is limited by hardware or chip, and there is an upper limit on the number of blind checks. When the terminal performs space division multiplexing in units of resource blocks (eg, MIMO space division multiplexing), it may not be possible to blindly detect all DMRS ports on all resource blocks.

Exemplarily, the number of DMRS ports that the terminal can detect on each resource block (for example, marked with N1) is 4, the number of resource blocks included in the initial bandwidth (for example, marked with N2) is 20, and the number of receiving antennas of the terminal ( For example: when marked with N3) is 4, the maximum number of blind checks of the terminal (for example: marked with N) is 160. If 12 users are multiplexed and paired on resource blocks, and each user transmits 1 stream of data, the network device schedules 20 resource blocks for the terminal user to transmit data, the terminal needs to The 12 DMRS ports on the resource block perform channel estimation, and the number of blind detection times (for example, marked with N') that the terminal needs to support is 960. The number of blind detections that the terminal needs to support is greater than the maximum number of blind detections of the terminal, so the terminal device cannot blindly detect all DMRS ports.

Mode 2: When the terminal determines that other DMRS ports are occupied, the terminal randomly selects several DMRS ports for blind detection, estimates the channel coefficients of the randomly selected DMRS ports, and selects the one with stronger interference according to the obtained channel coefficients of each DMRS port. The DMRS port performs interference suppression. However, the method of randomly selecting several DMRS ports for blind detection may select a DMRS port with weak interference or a DMRS port without interference, so that the DMRS port with strong interference is not selected, so that the terminal does not obtain DMRS with strong interference. The channel coefficient corresponding to the port cannot suppress the interference of the DMRS port with strong interference, resulting in poor interference suppression effect of the terminal.

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

Or it can 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 can also detect the DMRS ports in other CDM groups.

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

It should be noted that, in the above embodiments, the configuration of the reference signal port by the network device according to the first parameter is used as an example for description. In specific applications, the network device can also configure appropriate reference signal ports for the terminal device indiscriminately, so that the terminal device can achieve fewer detection times and detect most of the interference signals.

The following describes the specific contents of the ports configured on network devices and the ports detected by terminal devices. Exemplarily, as shown in Figure 11, the method includes:

S1101. 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 the reference signal associated with the interference signal carried on the second time-frequency resource port, and the second time-frequency resource is the 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 the CDM group where the reference signal port associated with the first signal is located includes at least one second reference signal port.

In this embodiment, the reference signal port is taken as an example of a DMRS port, and the specific implementation can be as follows.

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, wherein the second DMRS port is a DMRS port associated with the interference signal carried on the second time-frequency resource, The second time-frequency resource is the time-frequency resource corresponding to the first signal. It should be noted that, the reference signal port in the embodiment of the present application may also be other reference signal port, which is not limited in the embodiment of the present application. Therefore, in the description after this step, the DMRS port can also be replaced by other reference signal ports.

Exemplarily, the network device may determine the number of DMRS ports associated with the interference signal and/or the information of other terminal devices associated with the interference signal (for example, the channel detection capability of the terminal device), etc. / or location, etc. In a possible implementation manner, when transmitting multiple signals, the network device configures signals with relatively small mutual interference in the same resource block for transmission, so as to reduce the interference between multiple signals and utilize resources reasonably.

The following describes that at least one second reference signal port is included in the CDM group where the network device determines that the reference signal port associated with the first signal is located. For convenience of description, the following description will take the first CDM group as the CDM group where the DMRS port associated with the first signal is located, and the second DMRS port as the DMRS port associated with the interference signal carried on the second time-frequency resource.

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 can be understood as the maximum number of DMRS ports that the first CDM group can include), the network device determines The first CDM group includes all the second DMRS ports, where the second DMRS ports are DMRS ports associated with the interference signal carried on the second time-frequency resource.

In another possible implementation manner, 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 part of the second DMRS ports, where the second DMRS ports are carried on the The DMRS port associated with the interference signal on the second time-frequency resource. That is to say, the first CDM group cannot include all the second DMRS ports. Among the second DMRS ports, a part of the DMRS ports are included in the first CDM group, and another part of the DMRS ports are included in the second CDM group.

It should be noted that the network device can estimate the related information of the interference signal, such as the received power or strength of the interference signal by the terminal device, the correlation between the DMRS ports, and the like. The network device may determine the position of the second DMRS port according to the estimated related information of the interference signal.

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

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

Exemplarily, there are three CDM groups in the resource block sent by the network device, which are CDM group 0, CDM group 1, and CDM group 2, respectively. CDM group 0 and CDM group 1 are CDM groups not used for data transmission, and CDM group 2 is a CDM group used for data transmission. When the associated DMRS port when the network device sends the downlink signal to the terminal device is the DMRS port in the CDM group 0, the CDM group 0 is the first CDM group, and the CDM group 1 is the second CDM group.

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

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

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

It should be noted that, in specific implementation, the terminal device may not actively perceive the DMRS ports specifically included in the first CDM group, because the network device has determined that the second DMRS port is in the first CDM group, and the terminal device is in the first CDM group according to the network device. After instructing to determine the first CDM group, channel estimation may be performed on the DMRS ports in the first CDM group, and the second DMRS port may be detected in the first CDM group, thereby achieving better interference suppression.

In the embodiment of the present application, corresponding to the two possible implementation manners of S1101, when the second DMRS ports can all be 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 in the second DMRS port, a part of DMRS ports are included in the first CDM group, and another part of the DMRS ports are included in the second CDM group, at least one first DMRS port includes the DMRS port in the first CDM group and the second CDM group DMRS port in .

Or it can be understood that when the terminal device detects the DMRS port, the terminal device preferentially detects the second DMRS port in the first CDM group. When the detection capability of the terminal device is sufficient, the terminal device may also detect the DMRS port in the second CDM group.

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

Suitably, the terminal device receives the first signal sent by the network device.

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

From the above introduction to the solution of the present application, it can be understood that, in order to realize the above functions, the above implementing devices include hardware structures and/or software units corresponding to executing the functions. Those skilled in the art should easily realize that the present application can be implemented in hardware or a combination of hardware and computer software with the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein. Whether a function is performed by hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each particular application, but such implementations should not be considered beyond the scope of this application.

FIG. 12 is a schematic structural diagram of a communication device provided by 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 used to receive and transmit data under the control of the processor 1201 for data communication with the memory 1202 .

The bus architecture may include any number of interconnected buses and bridges, in particular one or more processors represented by processor 1201 and various circuits of memory represented by memory 1202 linked together. The bus architecture may also link together various other circuits, such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be described further herein. The bus interface provides the 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 processes disclosed in the embodiments of the present application may be applied to the processor 1201 or implemented by the processor 1201 . In the implementation process, each step of the flow of the communication method can be completed by an integrated logic circuit of hardware in the processor 1201 or an instruction 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, a discrete gate or transistor logic device, or a discrete hardware component, and may implement or execute the embodiments of the present application. The disclosed methods, steps, and logical block diagrams of . A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the methods disclosed in conjunction with the embodiments of the present application may be directly embodied as executed by a hardware processor, or executed by a combination of hardware and software modules in the processor. The software modules may be located in random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers and other storage media mature 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 in this embodiment of the present application, the processor 1201 is configured to read the program in the memory 1202 and execute the steps performed by the terminal device or the network device in the foregoing method embodiment. The implementation principle and technical effect thereof are similar. No longer.

FIG. 13 is a schematic structural diagram of a chip provided by an embodiment of the present application. The chip includes one or more processors 1301 and interface circuits 1302 . Optionally, the chip may further include a bus 1303 .

Wherein, the processor 1301 may be an integrated circuit chip, which has signal processing capability. In the implementation process, each step of the above-mentioned method can be completed by an integrated logic circuit of hardware in the processor 1301 or an instruction in the form of software. The above-mentioned processor 1301 may be a general purpose processor, a digital communicator (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components , MCU, MPU, CPU or one or more of coprocessors. Various methods and steps disclosed in the embodiments of this application can be implemented or executed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

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

Optionally, the chip further includes a memory, which may include a read-only memory and a random access memory, and provides operation 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 execute corresponding operations by calling operation instructions stored in the memory (the operation instructions may be stored in the operating system).

Optionally, the chip may be used in the first device or the second device involved in the embodiments of the present application. Optionally, the interface circuit 1302 can be used to output the execution result of the processor 1301 . For the communication method provided by one or more embodiments of the present application, reference may be made to the foregoing embodiments, which will not be repeated here.

It should be noted that the respective functions of the processor 1301 and the interface circuit 1302 can be implemented by hardware design, software design, or a combination of software and hardware, which is not limited here.

An embodiment of the present application may also provide a communication apparatus applied to a terminal device, where the communication apparatus includes a communication unit and a processing unit. A processing unit, configured to determine first indication information, where the first indication information is used to indicate a first parameter, and the first parameter is used to indicate that the terminal device is to receive at least one first signal from the network device within the first time period, and The maximum value of the number of times of detecting the first reference signal port on the first time-frequency resource, where the first time-frequency resource is part or all of the time-frequency resource that carries at least one first signal; the communication unit is used for sending to the network device first instruction information.

Or, the first parameter includes a fifth value, where the fifth value is, when the terminal device receives the at least one first signal within the first time period, the at least one first signal used by the terminal device for receiving the at least one first signal. On any one of the root antennas, for any resource group in the first time-frequency resource, under the condition that the number of detected first reference signal ports is the sixth value, the number of at least one antenna is the same as that of the first time-frequency resource. the maximum value of the product of the number of contained resource groups;

An embodiment of the present application can also provide another communication apparatus applied to a terminal device, where the communication apparatus includes a communication unit and a processing unit. a processing unit, configured to determine that the reference signal port detected on the second time-frequency resource includes some or all of the reference signal ports in the CDM group where the reference signal port associated with the first signal is located, and the second time-frequency resource is the first signal Corresponding time-frequency resources; a communication unit for receiving the first signal.

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

An embodiment of the present application can also provide another communication apparatus applied to a network device, where the communication apparatus includes a communication unit and a processing unit. A processing unit, configured to determine that the CDM group in which 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 associated with the interference signal carried on the second time-frequency resource The signal port, the second time-frequency resource is the time-frequency resource corresponding to the first signal; the communication unit is used for sending the first signal to the terminal device.

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

In some possible implementations, various aspects of the communication methods provided by the embodiments of the present application may also be implemented in the form of a program product, which includes program codes, and when the program codes are run on a computer device, the program codes are used to make The computer device executes the steps in the communication method according to various exemplary embodiments of the present application described in this specification.

The program product may employ any combination of one or more readable media. The readable medium may be a readable signal medium or a readable storage medium. The readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus or device, or a combination of any of the above. More specific examples (non-exhaustive list) of readable storage media include: electrical connections with one or more wires, portable disks, hard disks, 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), optical storage devices, magnetic storage devices, or any suitable combination of the foregoing.

A program product according to an embodiment of the present application may employ a portable compact disc read only memory (CD-ROM) and include 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 contains or stores a program that can be transmitted by communication, used by an apparatus or device, or used in combination therewith.

A readable signal medium may include a propagated data signal in baseband or as part of a carrier wave, carrying readable program code therein. Such propagated data signals may take a variety of forms including, but not limited to, electromagnetic signals, optical signals, or any suitable combination of the foregoing. A readable signal medium can also be any readable medium, other than a readable storage medium, that can transmit, 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 suitable medium including, but not limited to, wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.

Program code for performing the operations of the present application may be written in any combination of one or more programming languages, including object-oriented programming languages—such as Java, C++, etc., as well as conventional procedural programming Language - such as the "C" language or similar programming language. The program code may execute entirely on the user computing device, partly on the user device, as a stand-alone software package, partly on the user computing device and partly on a remote computing device, or entirely on the remote computing device or server execute on. In the case of a remote computing device, 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 embodiments of the present application also provide a computing device-readable storage medium for the communication method, that is, the content is not lost after power is turned off. The storage medium stores software programs, including program codes. When the program codes are run on a computing device, the software programs can implement any of the above communication methods in the embodiments of the present application when read and executed by one or more processors. .

An embodiment of the present application further provides an electronic device. In the case where each functional module is divided corresponding to each function, the electronic device includes: a processing module for a terminal device or a network device to execute the steps in the above embodiments, for example, it can execute The operations of S601, or other processes of the technologies described in the embodiments of this application.

Wherein, all the relevant contents of the steps involved in the above method embodiments can be cited in the functional description of the corresponding functional module, which will not be repeated here.

Of course, the first device includes but is not limited to the unit modules listed above. In addition, the specific functions that can be implemented by the above functional modules also include but are not limited to the functions corresponding to the method steps described in the above examples. The detailed description of other units of the electronic device can refer to the detailed description of the corresponding method steps. This application implements Examples are not repeated here.

In the case of using an integrated unit, the electronic device involved in the above embodiments may include: a processing module, a storage module and a communication module. The storage module is used to save the program codes and data of the electronic device. The communication module is used to support the communication between the electronic device and other network entities, so as to realize the functions of the electronic device's call, data interaction, Internet access and so on.

The processing module is used to control and manage the actions of the electronic device. The processing module may be a processor or a controller. The communication module may be a transceiver, an RF circuit or a communication interface or the like. The storage module may be a memory.

Further, the electronic device may further include an input module and a display module. The display module can be a screen or a display. The input module can be a touch screen, a voice input device, or a fingerprint sensor.

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

Accordingly, the present application may also be implemented in hardware and/or software (including firmware, resident software, microcode, 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 an instruction execution system or Used in conjunction with an instruction execution system. In the context of this application, a computer-usable or computer-readable medium can be any medium that can contain, store, communicate, transmit, or transmit a program for use by, or in connection with, an instruction execution system, apparatus, or device. device or equipment use.

The present application describes multiple embodiments in detail with reference to multiple flowcharts, but it should be understood that the related descriptions of these flowcharts and their corresponding embodiments are only examples for ease of understanding, and should not constitute any limitation to the present application. Each step in each flowchart is not necessarily required to be executed, for example, some steps can be skipped. Moreover, the execution sequence of each step is not fixed, nor limited to what is shown in the figures, and the execution sequence of each step should be determined by its function and internal logic.

The multiple embodiments described in this application may be arbitrarily combined or the steps may be executed alternately. The execution sequence of each embodiment and the execution sequence of the steps in each embodiment are not fixed, nor are they limited to the drawings. As shown, the execution sequence of each embodiment and the cross execution sequence of each step of each embodiment should be determined by its functions and inherent logic.

Although the application has been described in conjunction with specific features and embodiments thereof, it will be apparent that various modifications and combinations can be made therein without departing from the spirit and scope of the application. Accordingly, this specification and drawings are merely exemplary illustrations of the application as defined by the appended claims, and are deemed to cover any and all modifications, variations, combinations or equivalents within the scope of this application. Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

The above specific embodiments further describe the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above are only specific embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made on the basis of the technical solution of the present invention shall be included within the protection scope of the present invention.

Claims

A communication method, comprising:

The terminal device determines first indication information, where the first indication information is used to indicate a first parameter, and the first parameter is used to indicate that the terminal device is to receive at least one first parameter from the network device within the first time period signal, the maximum value of the number of times of detecting the first reference signal port on the first time-frequency resource, where the first time-frequency resource is part or all of the time-frequency resource carrying the at least one first signal;

The terminal device sends the first indication information to the network device.
The method of claim 1, comprising:

The first parameter includes at least one antenna used by the terminal device to receive the at least one first signal during the first time period, and the terminal device is used to receive the at least one first signal On all antennas in the first time-frequency resource, the maximum value of the total number of times of detecting the first reference signal port for all resource groups in the first time-frequency resource;

Or, the first parameter includes that the terminal device receives the at least one first signal during the first time period, and the terminal device uses at least one first signal to receive the at least one first signal. On any one of the root antennas, for all resource groups in the first time-frequency resource, detect the maximum value of the total number of times of the first reference signal port;

Or, the first parameter includes that the terminal device receives the at least one first signal during the first time period, for any resource group in the first time-frequency resources, the terminal device The maximum value of the total number of times of detecting the first reference signal port on all antennas in the at least one antenna used for receiving the at least one first signal;

Or, the first parameter includes that the terminal device detects the first time-frequency resource for any resource group in the first time-frequency resource in order to receive the at least one first signal within the first time period. The maximum value of the number of reference signal ports.
The method of claim 1, comprising:

The first parameter includes a first value, wherein the first value is a second value when the number of the at least one antenna used by the terminal device for receiving the at least one first signal is a second value , for the terminal device to receive the at least one first signal within the first time period, any one of the at least one antenna used by the terminal device to receive the at least one first signal above, for all resource groups in the first time-frequency resource, detect the maximum value of the total number of times of the first reference signal port;

Or, the first parameter includes a third value, where the third value is, in the case that the number of resource groups in the first time-frequency resource is a fourth value, the terminal device To receive the at least one first signal within the first time period, for any resource group in the first time-frequency resources, the terminal device uses at least one resource used for receiving the at least one first signal. On all antennas in the root antenna, the maximum value of the total number of times of detecting the first reference signal port;

Or, the first parameter includes a fifth value, where the fifth value is, when the terminal device receives the at least one first signal within the first time period, the terminal device uses On any one of the at least one antenna used to receive the at least one first signal, for any resource group in the first time-frequency resource, the number of the first reference signal ports is detected as the number of the first reference signal ports. Under the condition of six values, the maximum value of the product of the number of the at least one antenna and the number of resource groups included in the first time-frequency resource;

Or, the first parameter includes a seventh value, where the seventh value is the number of the at least one antenna used by the terminal device for receiving the at least one first signal, which is equal to the eighth value situation, and on any one of the at least one antenna used by the terminal device to receive the at least one first signal, for any resource group in the first time-frequency resources, detect the The maximum value of 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 the ninth value.
The method according to claim 3, wherein the method further comprises:

The terminal device sends second indication information to the network device, where the second indication information is used to indicate the second value, the fourth value, the sixth value, the eighth value or Any one of the ninth values, 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:

determining, by the terminal device, the reference signal port detected on the second time-frequency resource according to the first parameter;

Wherein, when the terminal device detects, for any resource group in the second time-frequency resources, that the maximum value of the number of the first reference signal ports is smaller than the first threshold, the terminal device is in the second time-frequency resource. Detecting part or all of the reference signal ports in the CDM group where the reference signal port associated with the first signal is located on the time-frequency resource, and the second time-frequency resource is part or all of the time-frequency resource bearing the first signal .
The method according to claim 5, wherein the method further comprises:

The terminal device receives third indication information, where the third indication information is used to indicate the second time-frequency resource.
A communication method, comprising:

The network device receives first indication information from the terminal device, where the first indication information is used to indicate a first parameter, and the first parameter is used to indicate that the terminal device is to receive at least one from the network device within the first time period. A first signal, the maximum value of the number of times of detecting the first reference signal port on the first time-frequency resource, where the first time-frequency resource is part or all of the time-frequency resource that carries the at least one first signal;

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

The first parameter includes at least one antenna used by the terminal device to receive the at least one first signal during the first time period, and the terminal device is used to receive the at least one first signal On all antennas in the first time-frequency resource, the maximum value of the total number of times of detecting the first reference signal port for all resource groups in the first time-frequency resource;

Or, the first parameter includes that the terminal device receives the at least one first signal during the first time period, and the terminal device uses at least one first signal to receive the at least one first signal. On any one of the root antennas, for all resource groups in the first time-frequency resource, detect the maximum value of the total number of times of the first reference signal port;

Or, the first parameter includes that the terminal device receives the at least one first signal during the first time period, for any resource group in the first time-frequency resources, the terminal device The maximum value of the total number of times of detecting the first reference signal port on all antennas in the at least one antenna used for receiving the at least one first signal;

Or, the first parameter includes that the terminal device detects the first time-frequency resource for any resource group in the first time-frequency resource in order to receive the at least one first signal within the first time period. The maximum value of the number of reference signal ports.
The method of claim 7, wherein:

The first parameter includes a first value, wherein the first value is a second value when the number of the at least one antenna used by the terminal device for receiving the at least one first signal is a second value , for the terminal device to receive the at least one first signal within the first time period, any one of the at least one antenna used by the terminal device to receive the at least one first signal above, for all resource groups in the first time-frequency resource, detect the maximum value of the total number of times of the first reference signal port;

Or, the first parameter includes a third value, where the third value is, in the case that the number of resource groups in the first time-frequency resource is a fourth value, the terminal device To receive the at least one first signal within the first time period, for any resource group in the first time-frequency resources, the terminal device uses at least one resource used for receiving the at least one first signal. On all antennas in the root antenna, the maximum value of the total number of times of detecting the first reference signal port;

Or, the first parameter includes a fifth value, where the fifth value is, when the terminal device receives the at least one first signal within the first time period, the terminal device uses On any one of the at least one antenna used to receive the at least one first signal, for any resource group in the first time-frequency resource, the number of the first reference signal ports is detected as the number of the first reference signal ports. Under the condition of six values, the maximum value of the product of the number of the at least one antenna and the number of resource groups included in the first time-frequency resource;

Or, the first parameter includes a seventh value, where the seventh value is the number of the at least one antenna used by the terminal device for receiving the at least one first signal, which is equal to the eighth value situation, and on any one of the at least one antenna used by the terminal device to receive the at least one first signal, for any resource group in the first time-frequency resources, detect the The maximum value of 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 the ninth value.
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 to indicate the second value, the fourth value, the sixth value, the eighth value or Any one of the ninth values, or the second indication information is used to indicate the eighth value and the ninth value.
The method according to claim 9, wherein after the network device determines the first parameter according to the first indication information, the method further comprises:

The network device determines the second time-frequency resource according to the first parameter and the terminal device detects the first time-frequency resource for any resource group in the second time-frequency resource in order to receive the first signal. The first maximum value of the number of reference signal ports, wherein the second time-frequency resource is a part or all of the time-frequency resource corresponding to the first signal determined by the network device according to the first parameter.
The method according to claim 11, wherein the method further comprises:

In the case that 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, and the second reference signal The port is a reference signal port associated with the interference signal carried on some or all of the resource groups in the second time-frequency resource.
The method of claim 12, wherein the method further comprises:

The network device sends third indication information, where the third indication information is used to indicate the second time-frequency resource.
A communication device, comprising:

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

The communication unit is configured to send the first indication information to the network device.
The apparatus of claim 14, comprising:

The first parameter includes at least one antenna used by the terminal device to receive the at least one first signal during the first time period, and the terminal device is used to receive the at least one first signal On all antennas in the first time-frequency resource, the maximum value of the total number of times of detecting the first reference signal port for all resource groups in the first time-frequency resource;

Or, the first parameter includes that the terminal device receives the at least one first signal during the first time period, and the terminal device uses at least one first signal to receive the at least one first signal. On any one of the root antennas, for all resource groups in the first time-frequency resource, detect the maximum value of the total number of times of the first reference signal port;

Or, the first parameter includes that the terminal device receives the at least one first signal during the first time period, for any resource group in the first time-frequency resources, the terminal device The maximum value of the total number of times of detecting the first reference signal port on all antennas in the at least one antenna used for receiving the at least one first signal;

Or, the first parameter includes that the terminal device detects the first time-frequency resource for any resource group in the first time-frequency resource in order to receive the at least one first signal within the first time period. The maximum value of the number of reference signal ports.
The apparatus of claim 14, comprising:

The first parameter includes a first value, wherein the first value is a second value when the number of the at least one antenna used by the terminal device for receiving the at least one first signal is a second value , for the terminal device to receive the at least one first signal within the first time period, any one of the at least one antenna used by the terminal device to receive the at least one first signal above, for all resource groups in the first time-frequency resource, detect the maximum value of the total number of times of the first reference signal port;

Or, the first parameter includes a third value, where the third value is, in the case that the number of resource groups in the first time-frequency resource is a fourth value, the terminal device To receive the at least one first signal within the first time period, for any resource group in the first time-frequency resources, the terminal device uses at least one resource used for receiving the at least one first signal. On all antennas in the root antenna, the maximum value of the total number of times of detecting the first reference signal port;

Or, the first parameter includes a fifth value, where the fifth value is, when the terminal device receives the at least one first signal within the first time period, the terminal device uses On any one of the at least one antenna used to receive the at least one first signal, for any resource group in the first time-frequency resource, the number of the first reference signal ports is detected as the number of the first reference signal ports. Under the condition of six values, the maximum value of the product of the number of the at least one antenna and the number of resource groups included in the first time-frequency resource;

Or, the first parameter includes a seventh value, where the seventh value is the number of the at least one antenna used by the terminal device for receiving the at least one first signal, which is equal to the eighth value situation, and on any one of the at least one antenna used by the terminal device to receive the at least one first signal, for any resource group in the first time-frequency resources, detect the The maximum value of 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 the ninth value.
The apparatus of claim 16, wherein:

The communication unit is further configured to send second indication information to the network device, wherein the second indication information is used to indicate the second value, the fourth value, the sixth value, the Either 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 processing unit is further configured for the terminal device to determine the reference signal port detected on the second time-frequency resource according to the first parameter;

Wherein, when the terminal device detects, for any resource group in the second time-frequency resources, that the maximum value of the number of the first reference signal ports is smaller than the first threshold, the terminal device is in the second time-frequency resource. Detecting part or all of the reference signal ports in the CDM group where the reference signal port associated with the first signal is located on the time-frequency resource, and the second time-frequency resource is part or all of the time-frequency resource bearing the first signal .
The apparatus of 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, wherein the first indication information is used to indicate a first parameter, and the first parameter is used to indicate that the terminal device is a slave network within a first time period The device receives at least one first signal, and detects the maximum number of times of the first reference signal port on the first time-frequency resource, where the first time-frequency resource is a part of the time-frequency resource carrying the at least one first signal or all;

and a processing unit, configured to determine the first parameter according to the first indication information.
The apparatus of claim 20, wherein:

The first parameter includes at least one antenna used by the terminal device to receive the at least one first signal during the first time period, and the terminal device is used to receive the at least one first signal On all antennas in the first time-frequency resource, the maximum value of the total number of times of detecting the first reference signal port for all resource block groups in the first time-frequency resource;

Or, the first parameter includes that the terminal device receives the at least one first signal during the first time period, and the terminal device uses at least one first signal to receive the at least one first signal. On any one of the root antennas, for all resource block groups in the first time-frequency resource, detect the maximum value of the total number of times of the first reference signal port;

Or, the first parameter includes that the terminal device receives the at least one first signal in the first time period, for any resource block group in the first time-frequency resource, at the terminal The device is configured to detect the maximum value of the total number of times of the first reference signal port on all antennas in the at least one antenna used for receiving the at least one first signal;

Or, the first parameter includes that the terminal device detects the first time-frequency resource for any resource block group in the first time-frequency resource in order to receive the at least one first signal within the first time period. A maximum value of the number of reference signal ports.
The apparatus of claim 20, wherein:

The first parameter includes a first value, wherein the first value is a second value when the number of the at least one antenna used by the terminal device for receiving the at least one first signal is a second value , for the terminal device to receive the at least one first signal within the first time period, any one of the at least one antenna used by the terminal device to receive the at least one first signal above, for all resource block groups in the first time-frequency resource, detect the maximum value of the total number of times of the first reference signal port;

Or, the first parameter includes a third value, where the third value is, in the case that the number of resource block groups in the first time-frequency resource is the fourth value, the terminal device is in the To receive the at least one first signal within the first time period, for any resource block group in the first time-frequency resource, the terminal device is used for receiving the at least one first signal. On all antennas in at least one antenna, the maximum value of the total number of times of detecting the first reference signal port;

Or, the first parameter includes a fifth value, where the fifth value is, when the terminal device receives the at least one first signal within the first time period, the terminal device uses On any one of the at least one antenna used to receive the at least one first signal, for any resource block group in the first time-frequency resource, the number of detected first reference signal ports is: Under the condition of the sixth value, the maximum value of the product of the number of the at least one antenna and the number of resource block groups included in the first time-frequency resource;

Or, the first parameter includes a seventh value, where the seventh value is the number of the at least one antenna used by the terminal device for receiving the at least one first signal, which is equal to the eighth value situation, and on any one of the at least one antenna used by the terminal device to receive the at least one first signal, for any resource block group in the first time-frequency resource, detect The maximum value of the number of resource block groups included in the first time-frequency resource under the condition that the number of the first reference signal ports is the ninth value.
The apparatus of claim 22, wherein:

The communication unit is further configured to receive second indication information from the terminal device, wherein the second indication information is used to indicate the second value, the fourth value, the sixth value, the Either 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 processing unit is further configured to determine, according to the first parameter, the second time-frequency resource and the terminal device, for receiving the first signal, for any resource block group in the second time-frequency resource, Detecting the first maximum value of the number of the first reference signal ports, wherein the second time-frequency resource is a part or all of the time-frequency resource corresponding to the first signal. The network device according to the first parameter Sure.
The apparatus of claim 24, wherein:

The processing unit is further configured to, in the case that the first maximum value is smaller than a first threshold, 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, and the The second reference signal port is a reference signal port associated with the interference signal carried on some or all of the resource block groups in the second time-frequency resource.
The apparatus of claim 25, wherein:

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, characterized in that it comprises: at least one processor for invoking a program in a memory to execute the method described in any one of claims 1-6, or execute the method described in any one of claims 7-13 method described.
A chip, characterized in that it includes at least one processor and an interface;

the interface 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 of claims 1-6, or to implement the method of any of claims 7-13.
A computer-readable storage medium, characterized in that the computer-readable storage medium stores instructions that, when the instructions are executed, cause a computer to execute the method according to any one of claims 1-6, or to execute The method of any of claims 7-13.
A computer program product, characterized in that it includes a computer program that, when executed by a processor, implements the method described in any one of claims 1-6, or performs any one of claims 7-13. the method described.