Communication method and communication apparatus

Abstract

The present application can be applied to the field of communications. Provided are a communication method and a communication apparatus. In the technical solution provided in the present application, time-domain filtering information is configured for CSI-IM resources, and time-domain filtering can be performed on measurement results on CSI-IM resources configured with the same time-domain filtering information. In this way, the accuracy of an interference measurement result can be improved.

Description

Communication method and communication apparatus

[0001] The present application claims priority to the Chinese patent application No. 202411231722.8, filed on September 3, 2024, and entitled "Communication method and communication apparatus", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to the field of communication, in particular to a communication method and a communication apparatus. BACKGROUND

[0003] In a communication system, a network side configures a channel state information-interference measurement (CSI-IM) resource for a terminal, and the terminal performs measurement based on the configured CSI-IM resource to obtain the interference situation of a neighbor cell, thereby assisting the network side to accurately perform network scheduling and interference management.

[0004] Generally, the more accurate the interference measurement result is, the better. Therefore, how to improve the accuracy of the interference measurement result becomes a technical problem to be solved. SUMMARY

[0005] The communication method and the communication apparatus provided by the present application can improve the accuracy of the interference measurement result.

[0006] In a first aspect, the present application provides a communication method, the communication method comprising: determining first information, the first information being used to configure time domain filtering information of a channel state information-interference measurement (CSI-IM) resource, the time domain filtering information comprising a beam index, quasi co-location information or time domain filtering number information, and the time domain filtering information being used to determine an interference measurement result; and transmitting the first information.

[0007] Because the power of the signals transmitted on the resources corresponding to different beam indexes, quasi co-location information, etc. can be different, and / or the power of the signals received by the communication device can be different, in this case, configuring the time domain filtering information for the CSI-IM resource can provide more information for the interference measurement device to refer to when performing time domain filtering on the measurement result on the CSI-IM resource to obtain the interference measurement result, thereby improving the rationality of the time domain filtering and further improving the accuracy of the interference measurement result.

[0008] The communication method can be executed by a communication device, or can be executed by a chip, a chip system, a processor, a processor system, a circuit unit, or a circuit system configured to be applied to the communication device, and the like. For the convenience of description, the subsequent content in the aspect is introduced by taking the communication device as an example. The communication device can be a network device or a terminal device. As an example, the communication device is a network device.

[0009] In some possible designs, the interference measurement result is determined by performing time domain filtering on the CSI-IM resource corresponding to the same time domain filtering information.

[0010] In the design, the measurement result on the CSI-IM resource configured with the same time domain filtering information is filtered in the time domain, which helps to avoid the influence of different beam energies or different channels on the accuracy of the interference measurement result.

[0011] In some possible designs, the first information includes one time domain filtering information.

[0012] In some possible designs, one CSI-IM resource configuration includes one time domain filtering information, that is, one CSI-IM resource corresponds to one time domain filtering information.

[0013] In the design, when the device performing interference measurement filters the measurement result on the CSI-IM resource in the time domain, the time domain filtering information corresponding to the CSI-IM resource can be used to directly determine how the measurement result on the CSI-IM resource should be filtered in the time domain, or which measurement results on the CSI-IM resources with the same time domain filtering information should be filtered in the time domain, that is, the process of time domain filtering can be more concise, and the efficiency of time domain filtering can be improved, so that the efficiency of interference measurement can be realized.

[0014] In some possible designs, the first information includes multiple time domain filtering information.

[0015] In some possible designs, one CSI-IM resource configuration includes multiple time domain filtering information, that is, one CSI-IM resource corresponds to multiple time domain filtering information.

[0016] In the design, one CSI-IM resource is used to measure multiple beams, or is used to measure interference on multiple channels. Because multiple time domain filtering information is configured for one CSI-IM resource, the number of CSI-IM resource configurations can be reduced, and therefore the signaling overhead can be reduced.

[0017] In some possible designs, the first information further includes a time domain pattern, and the time domain pattern is used to indicate multiple time domain resources of the CSI-IM resource, and the multiple time domain resources have an association relationship with the multiple time domain filtering information.

[0018] Under the scheme design, the communication device can flexibly configure the multiple time domain filtering information corresponding to the multiple time domain resources of the CSI-IM resource.

[0019] In some possible designs, the first information further includes quantity information of the time domain filtering information and / or subcarrier spacing information, and the quantity information and / or the subcarrier spacing information are used to determine the association between the multiple time domain resources of the CSI-IM resource and the time domain filtering information.

[0020] With this implementation, the association between the multiple time domain resources of the CSI-IM resource and the time domain filtering information can be flexibly configured.

[0021] In some possible designs, the communication method further includes: transmitting second information, the second information being used to configure a channel state information-reference signal (CSI-RS) resource, and the CSI-RS resource corresponding to one or more CSI-IM resources.

[0022] Under the scheme design, when performing channel measurement according to the CSI-RS resource, interference measurement can be performed according to the one or more CSI-IM resources, which realizes interference measurement of one or more neighboring areas / channels when performing channel measurement, and guarantees the timeliness and flexibility of the interference measurement.

[0023] In some possible designs, the communication method further includes: transmitting third information, the third information being used to indicate whether to report the interference measurement result. Optionally, the third information can indicate a reporting manner of the interference measurement result.

[0024] In this design, the reporting manner of the interference measurement result can include indicating periodic reporting, semi-persistent reporting, and aperiodic reporting of the measurement result, to reduce the occupation of the channel in the reporting process, determine the reporting manner according to the requirement, and avoid excessive reporting overhead.

[0025] In some possible designs, the interference measurement result includes signal quality information and / or channel state information.

[0026] In some possible designs, the communication method further includes: transmitting fourth information, the fourth information being used to indicate a maximum reporting quantity and / or a reporting threshold of the interference measurement result. For example, the CSI-IM resource ID with a relatively high interference measurement-reference signal received power (IM-RSRP) value in the signal quality information is preferentially reported.

[0027] In the design, the number and / or threshold of the interference measurement result reporting are limited, which can reduce the reporting overhead compared with reporting the IM-RSRP of each CSI-IM resource.

[0028] In some possible designs, the communication method further includes: receiving, by the network device, the interference measurement result.

[0029] In some possible designs, the reported interference measurement result includes at least one of: time domain filtering information corresponding to the interference measurement result, or identification information of a CSI-IM resource corresponding to the interference measurement result. The design can enable the network device to associate the interference measurement result with the time domain filtering information, and to learn which beams or channels the interference measurement result is for, so that the interference measurement result can be accurately used for related processing to improve the communication performance.

[0030] In some possible designs, the communication method further includes: sending fifth information, where the fifth information is used to indicate a time domain filtering threshold parameter, and the time domain filtering threshold parameter is used to determine the interference measurement result. The design can avoid performing time domain filtering on measurement results that do not need to be filtered in the time domain, which can improve the accuracy of the interference measurement result on the one hand, and improve the efficiency of time domain filtering on the other hand.

[0031] In some possible designs, the interference measurement result is determined based on a CSI-IM resource corresponding to the same time domain filtering information and satisfying the time domain filtering threshold parameter.

[0032] In the design, the CSI-IM resources configured with the same time domain filtering information are filtered based on a threshold, which avoids the influence of different beam energies or different channels on the accuracy of the interference measurement.

[0033] In a second aspect, the present application provides a communication method, which includes: receiving first information, where the first information is used to configure time domain filtering information of a first channel state information interference measurement (CSI-IM) resource, and the time domain filtering information includes a beam index, quasi co-location information, or time domain filtering number information; and performing interference measurement based on the first information.

[0034] The communication method can be executed by a communication device, or can be executed by a chip, a chip system, a processor, a processor system, a circuit unit, or a circuit system configured to be applied to the communication device. For the convenience of description, the subsequent content in the aspect is introduced by taking the communication device as an example. The communication device can be a network device or a terminal device. As an example, the communication device is a terminal device.

[0035] In some possible designs, the interference measurement result is determined based on a CSI-IM resource corresponding to the same time domain filtering information.

[0036] Influence of channel difference on interference measurement accuracy.

[0037] In some possible designs, the first information includes one time domain filtering information.

[0038] In some possible designs, one CSI-IM resource configuration includes one time domain filtering information, i.e., one CSI-IM resource corresponds to one time domain filtering information.

[0039] In some possible designs, the first information includes multiple time domain filtering information.

[0040] In some possible designs, one CSI-IM resource configuration includes multiple time domain filtering information, i.e., one CSI-IM resource corresponds to multiple time domain filtering information.

[0041] In some possible designs, the first information further includes a time domain pattern, and the time domain pattern is used to indicate multiple time domain resources of the CSI-IM resource, and the indicated multiple time domain resources have an association relationship with the multiple time domain filtering information.

[0042] In some possible designs, the first information further includes quantity information and / or subcarrier spacing information of the time domain filtering information, and the quantity information and / or the subcarrier spacing information are used to determine the association relationship.

[0043] In some possible designs, the communication method further includes: sending second information, the second information being used to configure a CSI-RS resource, and the CSI-RS resource corresponding to one or more CSI-IM resources.

[0044] In some possible designs, the communication method further includes: sending third information, the third information being used to indicate whether to report an interference measurement result. Optionally, the third information can indicate a reporting manner of the interference measurement result.

[0045] In some possible designs, the interference measurement result includes signal quality information and / or channel state information.

[0046] In some possible designs, the communication method further includes: sending fourth information, the fourth information being used to indicate a maximum reporting quantity and / or a reporting threshold of the interference measurement result.

[0047] In some possible designs, the communication method further includes: sending the interference measurement result.

[0048] In some possible designs, the reported interference measurement result includes at least one of the following: time domain filtering information corresponding to the interference measurement result, or identification information of a CSI-IM resource corresponding to the interference measurement result.

[0049] In some possible design, the method further includes: sending fifth information, where the fifth information is used to indicate a time domain filtering threshold parameter, and the time domain filtering threshold parameter is used to determine the interference measurement result.

[0050] In some possible design, the interference measurement result is determined based on time domain filtering of CSI-IM resources corresponding to the same time domain filtering information and satisfying the time domain filtering threshold parameter.

[0051] In a third aspect, the present application provides a communication apparatus. The communication apparatus can include modules corresponding to the method / operations / steps / actions described in the first aspect or any possible implementation manner of the first aspect. The modules can be hardware circuit, software, or a combination of hardware circuit and software.

[0052] In a design, the apparatus can include a processing module and a communication module. The communication module is configured to perform the sending action and the receiving action in the method described in the first aspect or any possible implementation manner of the first aspect, and the processing module is configured to perform the action related to processing in the method described in the first aspect or any possible implementation manner of the first aspect.

[0053] In a design, the apparatus can be a terminal device, or a device, module, circuit, or chip configured to be arranged in the terminal device, or a device capable of being used in matching with the terminal device.

[0054] In a design, the apparatus can be a network device, or a device, module, circuit, or chip configured to be arranged in the network device, or a device capable of being used in matching with the network device.

[0055] In a fourth aspect, the present application provides a communication apparatus. The communication apparatus can include modules corresponding to the method / operations / steps / actions described in the second aspect or any possible implementation manner of the second aspect.

[0056] In a design, the apparatus can include a processing module and a communication module. The communication module is configured to perform the sending action and the receiving action in the method described in the second aspect or any possible implementation manner of the second aspect, and the processing module is configured to perform the action related to processing in the method described in the second aspect or any possible implementation manner of the second aspect.

[0057] In a design, the apparatus can be a terminal device, or a device, module, circuit, or chip configured to be arranged in the terminal device, or a device capable of being used in matching with the terminal device.

[0058] In one design, the apparatus can be a network device, or a device, module, circuit, or chip configured to be deployed in a network device, or a device capable of being used in conjunction with a network device.

[0059] In a fifth aspect, a device is provided, which includes a processor, and instructions which, when executed by the processor, cause the method in the first aspect or any possible implementation of the first aspect to be implemented.

[0060] Optionally, the device can further include a storage medium storing the aforementioned instructions for the processor to execute.

[0061] In a sixth aspect, a device is provided, which includes a processor, and instructions which, when executed by the processor, cause the method in the second aspect or any possible implementation of the second aspect to be implemented.

[0062] Optionally, the device can further include a storage medium storing the aforementioned instructions for the processor to execute.

[0063] In a seventh aspect, a chip is provided, which includes a processing circuitry configured to execute a program or instructions, so as to cause the method in the first aspect or any possible implementation of the first aspect to be implemented.

[0064] Optionally, the chip can further include a memory configured to store the program or instructions.

[0065] Optionally, the chip can further include the transceiver, or an input / output interface.

[0066] In an eighth aspect, a chip is provided, which includes a processing circuitry configured to execute a program or instructions, so as to cause the method in the second aspect or any possible implementation of the second aspect to be implemented.

[0067] Optionally, the chip can further include a memory configured to store the program or instructions.

[0068] Optionally, the chip can further include the transceiver, or an input / output interface.

[0069] In a ninth aspect, a computer-readable storage medium is provided, which includes instructions, when executed by a processor, cause the method in the first aspect or any possible implementation of the first aspect to be implemented.

[0070] In a tenth aspect, a computer-readable storage medium is provided, which includes instructions, when executed by a processor, cause the method in the second aspect or any possible implementation of the second aspect to be implemented.

[0071] In an eleventh aspect, a computer program product is provided, the computer program product comprising computer program code or instructions, which, when executed by a computer, cause the method according to the first aspect or any possible implementation of the first aspect to be implemented.

[0072] In a twelfth aspect, a computer program product is provided, the computer program product comprising computer program code or instructions, which, when executed by a computer, cause the method according to the second aspect or any possible implementation of the second aspect to be implemented.

[0073] In a thirteenth aspect, a communication system is provided, the communication system comprising: an apparatus according to the first aspect or any possible implementation of the first aspect, and an apparatus according to the second aspect or any possible implementation of the second aspect.

[0074] It is to be understood that the technical effects of any of the second aspect to the thirteenth aspect of the present application can refer to the related content in the first aspect, which will not be repeated here. BRIEF DESCRIPTION OF DRAWINGS

[0075] FIG. 1a is an example diagram of a communication system suitable for the communication method according to the embodiments of the present application;

[0076] FIG. 1b is an example diagram of a communication system suitable for the communication method according to the embodiments of the present application;

[0077] FIG. 2 is a schematic diagram of an application scenario beam suitable for the embodiments of the present application;

[0078] FIG. 3 is a schematic diagram of different channel power relationships suitable for the embodiments of the present application;

[0079] FIG. 4a is a diagram of a frame structure of a communication system suitable for the embodiments of the present application;

[0080] FIG. 4b is a diagram of a relationship between a time slot and a subframe suitable for the embodiments of the present application;

[0081] FIG. 5 is an example diagram of symbol types and time slot formats suitable for the embodiments of the present application;

[0082] FIG. 6 is a diagram of a frequency domain resource distribution suitable for the embodiments of the present application;

[0083] FIG. 7 is a diagram of a frequency domain resource distribution suitable for the embodiments of the present application;

[0084] FIG. 8 is an example diagram of a communication system suitable for the embodiments of the present application;

[0085] FIG. 9 is an example diagram of a communication system suitable for the embodiments of the present application;

[0086] FIG. 10 is an example diagram of a communication system suitable for use with embodiments of the application;

[0087] FIG. 11 is an example diagram of a communication system suitable for use with embodiments of the application;

[0088] FIG. 12 is an example diagram of a CSI-IM resource pattern suitable for use with embodiments of the application;

[0089] FIG. 13 is an example diagram of interference measurement suitable for use with embodiments of the application;

[0090] FIG. 14 is an example diagram of interference measurement suitable for use with embodiments of the application;

[0091] FIG. 15 is an example diagram of a communication method suitable for use with embodiments of the application;

[0092] FIG. 16 is an example diagram of interference measurement suitable for use with embodiments of the application;

[0093] FIG. 17 is an example diagram of interference measurement suitable for use with embodiments of the application;

[0094] FIG. 18 is an example diagram of a time domain pattern suitable for use with embodiments of the application;

[0095] FIG. 19 is an example diagram of a time domain pattern suitable for use with embodiments of the application;

[0096] FIG. 20 is an example diagram of a time domain pattern suitable for use with embodiments of the application;

[0097] FIG. 21 is an example diagram of a time domain pattern suitable for use with embodiments of the application;

[0098] FIG. 22 is an example diagram of a time domain pattern suitable for use with embodiments of the application;

[0099] FIG. 23 is an example diagram of time domain averaging suitable for use with embodiments of the application;

[0100] FIG. 24 is a diagram of a structure of a communication device suitable for use with embodiments of the application;

[0101] FIG. 25 is a diagram of a structure of a communication device suitable for use with embodiments of the application;

[0102] FIG. 26 is a diagram of a system architecture suitable for use with embodiments of the application;

[0103] FIG. 27 is a diagram of a system architecture suitable for use with embodiments of the application;

[0104] FIG. 28 is a diagram of a division of functions of a device suitable for use with embodiments of the application. DETAILED DESCRIPTION

[0105] The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings.

[0106] In order to clearly describe the technical solutions of the embodiments of the present application, in the embodiments of the present application, the terms "first", "second", etc. are used to distinguish the same or similar items with basically the same function and role. Those skilled in the art can understand that the terms "first", "second", etc. do not limit the quantity and execution order, and the terms "first", "second", etc. also do not necessarily mean different.

[0107] It should be noted that in the embodiments of the present application, the words "exemplary" or "for example" are used to indicate an example, illustration or description. Any embodiment or design scheme described as "exemplary" or "for example" in the present application should not be interpreted as more preferred or more advantageous than other embodiments or design schemes. Rather, the words "exemplary" or "for example" are intended to present the relevant concept in a specific manner.

[0108] In the embodiments of the present application, "at least one" means one or more, and "multiple" means two or more. The association relationship between the associated objects is described by "and / or", which means that there can be three kinds of relationships, for example, A and / or B, which can represent the following three cases: A exists alone, A and B exist together, and B exists alone, where A and B can be singular or plural. The character " / " generally represents an "or" relationship between the associated objects before and after it. "At least one of the following" or similar expressions means any combination of these items, including any combination of single item or multiple items. For example, at least one of a, b and (or) c can represent a, b, c, a-b, a-c, b-c, or a-b-c, where a, b, and c can be single or multiple.

[0109] The technical solutions of the present application are applicable to wireless communication systems, such as: 5th generation (5G) or new radio (NR) systems, long term evolution (LTE) systems, LTE frequency division duplex (FDD) systems, LTE time division duplex (TDD) systems, wireless local area network (WLAN) systems, satellite communication systems, future mobile communication systems, or fusion systems of multiple systems, etc.

[0110] The technical solutions provided in the application can also be applied to device to device (D2D) communication, vehicle-to-everything (V2X) communication, machine to machine (M2M) communication, machine type communication (MTC), and internet of things (IoT) communication systems or other communication systems.

[0111] A network element in a communication system can send or receive a signal to or from another network element. The signal can include information, signaling, data, etc. The network element can also be replaced by an entity, a network entity, a device, a communication device, a communication module, a node, a communication node, etc. In this application, a device is taken as an example for description. For example, the communication system can include at least one terminal device and at least one network device. The network device can send a downlink signal to the terminal device, and / or the terminal device can send an uplink signal to the network device.

[0112] In the embodiments of the present application, the terminal device can also be referred to as a user equipment (UE), an access terminal, a user unit, a user station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent or a user apparatus.

[0113] The terminal device can be a device providing voice / data, for example, a handheld device with wireless connection function, a vehicle-mounted device, etc. At present, some examples of terminals are: mobile phone, tablet computer, notebook computer, palm computer, mobile internet device (MID), wearable device, virtual reality (VR) device, augmented reality (AR) device, wireless terminal in industrial control, wireless terminal in self driving, wireless terminal in remote medical surgery, wireless terminal in smart grid, wireless terminal in transportation safety, wireless terminal in smart city, wireless terminal in smart home, cellular phone, cordless phone, session initiation protocol (SIP) phone, wireless local loop (WLL) station, personal digital assistant (PDA), handheld device with wireless communication function, computing device or other processing device connected to a wireless modem, wearable device, terminal device in a 5G network, or terminal device in a future evolved public land mobile network (PLMN), etc. The embodiments of the present application are not limited thereto.

[0114] The terminal can be widely applied to various scenarios, such as device-to-device (D2D), vehicle to everything (V2X) communication, machine-type communication (MTC), internet of things (IOT), virtual reality, augmented reality, industrial control, autonomous driving, remote medical treatment, smart grid, smart furniture, smart office, smart wear, smart transportation, smart city, communication and perception integration, etc. The terminal can be a mobile phone, a tablet computer, a computer with wireless transceiver function, a wearable device, a vehicle, an airplane, a ship, a robot, a mechanical arm, a smart home device, a sensor, etc. The embodiments of the present application do not limit the specific technology and specific device form adopted by the terminal.

[0115] By way of example and not limitation, in embodiments of the present application, the terminal device can also be a wearable device. The wearable device can also be referred to as a wearable smart device, which is a general term for devices that are designed and developed by applying wearable technology to daily wear, such as glasses, gloves, watches, clothing, and shoes. The wearable device is a portable device that is directly worn on the body or integrated into the clothes or accessories of the user. The wearable device is not only a hardware device, but also has strong functions through software support and data interaction and cloud interaction. The general wearable smart device includes a full function, a large size, and can realize complete or partial functions without relying on a smart phone, such as a smart watch or smart glasses, and focuses on a certain application function and needs to be used in cooperation with other devices, such as a smart phone, such as various smart wristbands and smart jewelry for monitoring vital signs.

[0116] In embodiments of the present application, the device for implementing the function of the terminal device can be a terminal device, or a device capable of supporting the terminal device to implement the function, such as a chip system, which can be installed in the terminal device or used in matching with the terminal device. In embodiments of the present application, the chip system can be composed of a chip, or can include a chip and other discrete devices. In embodiments of the present application, only the device for implementing the function of the terminal device is taken as an example for description, and the scheme of the embodiments of the present application is not limited.

[0117] The network device in the embodiments of the present application can be a device for communicating with a terminal device, and the network device can also be referred to as an access network device or a radio access network device, for example, the network device can be a base station. The network device in the embodiments of the present application can refer to a radio access network (RAN) node (or device) for accessing a terminal device to a wireless network. The base station can broadly cover various names in the following or be replaced by the following names, such as: Node B (NodeB), evolved Node B (eNB), next generation Node B (gNB), relay station, access point, transmitting and receiving point (TRP), transmitting point (TP), primary station, secondary station, multi-standard radio (MSR) node, home base station, network controller, access node, wireless node, access point (AP), transmission node, transceiver node, baseband unit (BBU), remote radio unit (RRU), active antenna unit (AAU), remote radio head (RRH), central unit (CU), distributed unit (DU), radio unit (RU), positioning node, etc. The base station can be a macro base station, a micro base station, a relay node, a donor node or the like, or a combination thereof. The base station can also refer to a communication module, modem or chip for being arranged in the foregoing device or apparatus. The base station can also be a mobile switching center and a device assuming a base station function in D2D, V2X, M2M communication, a network device in a future communication network, a device assuming a base station function in a future communication system, etc. The base station can support networks of the same or different access technologies. Optionally, the RAN node can also be a server, a wearable device, a vehicle or a vehicle-mounted device, etc. For example, the access network device in vehicle to everything (V2X) technology can be a road side unit (RSU). The embodiments of the present application do not limit the specific technology and specific device form of the network device.

[0118] The network device can be fixed or mobile. For example, a helicopter or a drone can be configured to act as a mobile base station, and one or more cells can move according to the location of the mobile base station. In other examples, the helicopter or the drone can be configured to act as a device that communicates with another base station.

[0119] In the embodiments of the present application, the apparatus for implementing the function of the network device can be the network device, or an apparatus capable of supporting the network device to implement the function, such as a chip system, a hardware circuit, a software module, or a hardware circuit plus a software module. The apparatus can be installed in the network device or used in combination with the network device. In the embodiments of the present application, only the apparatus for implementing the function of the network device is taken as an example for description, and the scheme of the embodiments of the present application is not limited in this way.

[0120] The network device and / or the terminal device can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; can also be deployed on the water surface; and can also be deployed on aircraft, balloons and satellites in the air. The scenarios in which the network device and the terminal device are located are not limited in the embodiments of the present application. In addition, the terminal device and the network device can be hardware devices, or software functions running on special hardware, software functions running on general hardware, such as virtualized functions instantiated on a platform (for example, a cloud platform), or entities including special or general hardware devices and software functions. The specific forms of the terminal device and the network device are not limited in the present application.

[0121] In another possible scenario, multiple RAN nodes cooperate to assist a terminal to implement wireless access, and different RAN nodes respectively implement part of the functions of a base station. For example, the RAN node can be a CU, a DU, a CU-control plane (CP), a CU-user plane (UP), or a radio unit (RU), etc. The CU and the DU can be separately arranged, or can be included in the same network element, such as a baseband unit (BBU). The RU can be included in a radio frequency device or a radio frequency unit, such as a remote radio unit (RRU), an active antenna processing unit (AAU) or a remote radio head (RRH).

[0122] The CU (or CU-CP and CU-UP), DU or RU can also have different names in different systems, but those skilled in the art can understand their meanings. For example, in an open RAN (O-RAN or ORAN) system, the CU can also be referred to as an O-CU (open CU), the DU can also be referred to as an O-DU, the CU-CP can also be referred to as an O-CU-CP, the CU-UP can also be referred to as an O-CU-UP, and the RU can also be referred to as an O-RU. For the convenience of description, the CU, CU-CP, CU-UP, DU and RU are taken as examples for description in this application. Any one of the CU (or CU-CP, CU-UP), DU and RU in this application can be implemented by a software module, a hardware module, or a combination of a software module and a hardware module.

[0123] The communication between the access network device and the terminal device complies with a certain protocol layer structure. The protocol layer can include a control plane protocol layer and a user plane protocol layer. The control plane protocol layer can include at least one of the following: a radio resource control (RRC) layer, a packet data convergence protocol (PDCP) layer, a radio link control (RLC) layer, a media access control (MAC) layer, or a physical (PHY) layer, etc. The user plane protocol layer can include at least one of the following: a service data adaptation protocol (SDAP) layer, a PDCP layer, an RLC layer, a MAC layer, or a physical layer, etc.

[0124] For the correspondence between the network element in the ORAN system and the protocol layer function that can be implemented, refer to Table 1 below.

[0125] Table 1

[0126] The network device can be another device that provides wireless communication functions for the terminal device. 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, the embodiments of the present application do not limit.

[0127] The network device can also include a core network device, for example, including a mobility management entity (MME) in a fourth generation (4G) network, a home subscriber server (HSS), a serving gateway (S-GW), a policy and charging rules function (PCRF), a public data network gateway (P-GW), a network element such as an access and mobility management function (AMF), a user plane function (UPF), or a session management function (SMF) in a 5G network, and the like. In addition, the core network device can also include other core network devices in a 5G network and future communication networks.

[0128] In the embodiments of the present application, the device for implementing the function of the network device can be a network device or a device capable of supporting the network device to implement the function, such as a chip system, which can be installed in the network device. In the technical solutions provided in the embodiments of the present application, the device for implementing the function of the network device is taken as an example to describe the technical solutions provided in the embodiments of the present application.

[0129] In order to facilitate understanding of the method provided in the embodiments of the present application, the system architecture of the method provided in the embodiments of the present application will be described below. It can be understood that the system architecture described in the embodiments of the present application is for more clearly illustrating the solutions of the embodiments of the present application, and does not constitute a limitation on the solutions provided in the embodiments of the present application.

[0130] Referring to FIG. 1a, an architecture diagram of a communication system to which embodiments of the present application can be applied is shown. As shown in FIG. 1a, the communication system includes a RAN 100 and a core network 200. Optionally, the communication system 1000 can further include an Internet 300. The RAN 100 includes at least one RAN node (e.g., 110a and 110b in FIG. 1a, collectively referred to as 110) and at least one terminal (e.g., 120a-120j in FIG. 1a, collectively referred to as 120). The RAN 100 can further include other RAN nodes, such as a wireless relay device and / or a wireless backhaul device (not shown in FIG. 1a). The terminal 120 is wirelessly connected to the RAN node 110, and the RAN node 110 is connected to the core network 200 in a wired or wireless manner. The core network device in the core network 200 and the RAN node 110 in the RAN 100 can be independent and different physical devices, or can be the same physical device integrated with the logical functions of the core network device and the logical functions of the RAN node. Terminals and terminals, and RAN nodes and RAN nodes can be connected to each other in a wired or wireless manner.

[0131] In a possible implementation, the present application can be applied to a long term evolution (LTE) wireless communication system, an NR wireless communication system, and a future evolved new radio (NR) wireless communication system. For example, the present application can be applied to an orthogonal frequency division multiplexing (OFDM) system in LTE, an OFDM system in NR, and a future OFDM system and an OFDM-like system, etc.

[0132] FIG. 1b is an example diagram of a communication system suitable for a communication method according to an embodiment of the present application. As shown in FIG. 1b, the communication system includes at least one network device, such as the network device 110 shown in FIG. 1b, and at least one terminal device, such as the terminal device 120 shown in FIG. 1b. The network device 110 and the terminal device 120 can communicate through a wireless link. The communication devices in the communication system, such as the network device 110 and the terminal device 120, can communicate through multi-antenna technology.

[0133] In actual applications, the communication system can include multiple network devices and multiple terminal devices. The number of network devices and terminal devices included in the communication system is not limited in the embodiments of the present application.

[0134] In some application scenarios, a network device will semi-statically / periodically send a synchronization signal block (SSB), semi-statically send a control resource set (CORESET), and dynamically send a physical downlink shared channel (PDSCH). The power of different channels can be different, and the beam width can be different.

[0135] As shown in FIG. 2, different types of channels have different coverage ranges, where the SSB is a signal used for cell search and synchronization, and its design purpose is to provide coverage throughout the cell range to ensure that terminals can detect the cell and synchronize. Therefore, SSB usually needs to have a wide coverage range so that terminals can receive synchronization signals at different locations in the cell.

[0136] The CORESET is a resource set used for transmitting control information, and its coverage range is related to the SSB. According to specific configurations, it can be optimized for certain parts of the cell.

[0137] The PDSCH is a physical channel used for downlink data transmission. Its coverage range depends on multiple factors, including scheduled DMRS, CORESET configuration, and beamforming strategy. The transmission quality of the PDSCH can vary depending on the user location and channel conditions, so its coverage range can be narrower than that of the SSB and CORESET in some cases, especially when user-level dynamic beamforming is used.

[0138] As shown in FIG. 3, it is a schematic diagram of the power relationship of different channels, where the secondary synchronization signal (SSS) power is -60 to 50 dBm, and the vertical axis represents power. The arrow direction in the figure represents the power change direction.

[0139] For example, the power of the physical downlink control channel (PDCCH) changes by -8 or 8 decibels from the SSS. Those skilled in the art can understand that a change of -8 decibels means that the PDCCH is 10 -0.8 times the power of the SSS; a change of 8 decibels means that the PDCCH is 10 0.8 times the power of the SSS. Similarly, the power of the primary synchronization signal (PSS) changes by 0 or 3 decibels from the SSS. Those skilled in the art can understand that a change of 0 decibels means no change, and a change of 3 decibels means that the PSS is 100.3 times.

[0140] In some possible implementation manners, the concept of a numerology is introduced, which includes a sub-carrier spacing (SCS), and parameters corresponding to the SCS, such as a symbol length, a cycle prefix (CP) length, and the like. Since there is a certain mapping relationship between the SCS and the symbol length and the CP length, the SCS is usually used instead of the numerology. The relationship among μ (μ is a natural number), the SCS, the CP length, and a supported frequency range is shown in Table 2.

[0141] Table 2 Relationship among μ, SCS, CP length, and supported frequency range

[0142] In Table 2, μ represents a sub-carrier spacing index, the CP length includes a normal CP length and an extended CP length, and FR represents a frequency range (FR).

[0143] In some possible implementation manners, units on a system time domain include a symbol, a slot, a subframe, a half frame, a frame, and the like. A time of one frame is 10 ms, one frame can be divided into 10 subframes, and the subframes can be numbered 0-9. Subframes numbered 0-4 can form one half frame, and subframes numbered 5-9 can form one half frame. A time of each subframe can be 1 ms. Each subframe can include one or more slots. In a normal CP, each slot can include 14 symbols, and in an extended CP, one slot can include 12 symbols. Specifically, a relationship between the number of slots included in each subframe and the SCS is shown in Table 3.

[0144] Table 3 Relationship between SCS and number of slots included in each subframe

[0145] In some scenarios, a frame structure used by the communication system is shown in FIG. 4a.

[0146] In the time domain, an exemplary frame structure is as follows: a frame, which can have a length of 10 ms, and a frame number range of 0-1023. The frame can be divided into 10 subframes. A subframe, which can have a length of 1 ms, and a subframe number range of 0-9. A slot, which is a time segment in a subframe for transmitting data, and is a minimum unit of data scheduling. When a normal CP is used, the slot can have a length of 14 symbols. A symbol, which is a minimum unit of modulation, and can have a length that is not fixed, and is related to the SCS.

[0147] For example, the scheduling time unit on the data domain can be a slot, the number of symbols in the length of the slot can be fixed, the length of the symbol is related to the SCS, and therefore the length of the slot can not be fixed. For example, when SCS = 15 kilohertz (kHz), there is 1 slot in each subframe (e.g., 1 ms); for another example, when SCS = 120 kHz, there are 8 slots in each subframe (1 ms).

[0148] For example, the length of the slot is fixed in the number of symbols, but the length of the symbol is related to the SCS. For example, when the SCS is 30 kHz and 120 kHz, respectively, the relationship between the frame, the subframe, the slot, and the symbol is shown in FIG. 4b.

[0149] In FIG. 4b, when SCS = 30 kHz, 1 radio frame includes 10 subframes, 1 subframe includes 2 slots, and 1 slot includes 14 symbols; when SCS = 120 kHz, 1 radio frame includes 10 subframes, 1 subframe includes 8 slots, and 1 slot includes 14 symbols.

[0150] In some possible implementations, as shown in FIG. 5, there can be three types of symbols: 5-1, for downlink transmission, 5-2, for uplink transmission, and 5-3, flexible, which can be used for uplink transmission, can also be used for downlink transmission, and can also be used as a guard period (GP) or reserved resource. Different patterns and blanks in FIG. 5 represent different types of symbols.

[0151] In some possible implementations, each slot can be freely combined by the three types of symbols to form various slot formats.

[0152] For example, in FIG. 5, as shown in 5-4, a slot is composed of downlink and flexible; as shown in 5-5, a slot is composed of flexible and uplink; as shown in 5-6, a slot is composed of downlink, flexible, and uplink, and similarly, 5-7 and 5-8 are also composed of three types of symbols.

[0153] Those skilled in the art can understand that, for ease of illustration, several combination modes are shown in FIG. 5, and in actual methods, there can be a plurality of combination modes, which are not limited in the present application.

[0154] In FIG. 5, 5-6 and 5-7 are also referred to as self-contained slots, corresponding to two structures of self-contained slots, respectively.

[0155] Downlink-dominant slot: i.e. 5-6, in which the slot is mainly used for transmission of downlink data, while a small amount of symbols are used for transmission of uplink control signals by time division multiplexing, for example, hybrid automatic repeat request feedback of the downlink data, so as to shorten the downlink hybrid automatic repeat request feedback delay.

[0156] Uplink-dominant slot: i.e. 5-7, in which the slot is mainly used for transmission of uplink data, while a small amount of symbols are used for transmission of downlink control signals by time division multiplexing, for example, uplink scheduling indication in the PDCCH, so as to shorten the uplink scheduling delay.

[0157] In the design of self-contained slots, both the network device and the terminal need to switch between uplink and downlink transmission within a slot, and the switching after the conversion can work normally by reserving a protection time and not transmitting or receiving any signals in the protection time.

[0158] As shown in FIG. 6 is a frequency domain resource distribution diagram of the application.

[0159] A resource element (RE) is the smallest granularity physical layer resource, 1 subcarrier in the frequency domain, and 1 OFDM symbol in the time domain.

[0160] A resource block (RB) is the basic unit of channel resource allocation in the frequency domain, and can contain 12 subcarriers in the frequency domain. The subcarrier spacing is variable, so the actual bandwidth of the RB is also variable.

[0161] A resource grid (RG) is a set of time-frequency resources, and is defined for different numerologies on each carrier. A RG is a set of resources of all subcarriers in the frequency domain and all symbols in a subframe in the time domain, and the starting point of the frequency domain is in the granularity of RB. Since different numerologies correspond to different SCS, and a RB is 12 subcarriers, for the same transmission bandwidth, the number of RBs contained in the RG is different under different numerologies. The RG is 1 subframe in the time domain. Meanwhile, the uplink and downlink each define their own RG.

[0162] In some possible implementation manners, a common resource block (CRB) can be understood as a general term for all RBs in the system. The center frequency point of the 0th subcarrier in the CRB0 is also Point A.

[0163] Physical resource block (PRB) refers to the RB contained in the bandwidth part (BWP) of a certain UE in a communication system, which is also numbered from 0, and is a basic unit of data channel scheduling.

[0164] Resource block group (RBG) refers to the combination of a plurality of PRBs within a BWP, which is also numbered from 0, and is a basic unit of data channel scheduling. One RBG can contain {2, 4, 8, 16} PRBs, and the specific number is related to the number of RBs in the BWP and the configuration options, as shown in Table 4.

[0165] Table 4: Number of RBs contained in RBG

[0166] Physical reception link control channel (PRxCCH): is a kind of physical layer control channel, generally, the standard protocol is described from the perspective of terminal equipment, that is, the physical layer control channel received by the terminal equipment, which is similar to the PDCCH in LTE and 5G. PRxCCH can be a new physical layer control channel introduced in future communication systems. Of course, the future communication system may still use PDCCH to represent the physical downlink control channel or physical transmission link control channel of the terminal device.

[0167] Physical reception link shared channel (PRxSCH): is a kind of physical layer data channel, generally, the standard protocol is described from the perspective of terminal equipment, that is, the physical layer data channel received by the terminal equipment, which is similar to the PDSCH in LTE and 5G. PRxSCH can be a new physical layer data channel introduced in future communication systems. Of course, the future communication system may still use PDSCH to represent the physical downlink data channel or physical reception link data channel of the terminal device.

[0168] Physical transmission link control Channel (PTxCCH): is a kind of physical layer control channel, generally, the standard protocol is described from the perspective of terminal equipment, that is, the physical layer control channel sent by the terminal equipment, which is similar to the PUCCH in LTE and 5G. PTxCCH can be a new physical layer control channel introduced in future communication systems. Of course, the future communication system can still use PUCCH to represent the physical uplink control channel or the physical transmission link control channel of the terminal equipment.

[0169] Physical transmission link Shared Channel (PTxSCH): is a kind of physical layer data channel, generally, the standard protocol is described from the perspective of terminal equipment, that is, the physical layer data channel sent by the terminal equipment, which is similar to the PUSCH in LTE and 5G. PTxSCH can be a new physical layer data channel introduced in future communication systems. Of course, the future communication system can still use PUSCH to represent the physical uplink data channel or the physical reception link data channel of the terminal equipment.

[0170] Optionally, for downlink, it can be described as receiving from the perspective of terminal equipment; for uplink, it can be described as sending from the perspective of terminal equipment.

[0171] As shown in FIG. 7, it is a frequency domain resource distribution diagram of the application. Among them, the resource element group (resource element group, REG) is the basic unit of the control channel resource. 1 REG is 12 subcarriers in the frequency domain, that is, the width of a PRB, and 1 OFDM symbol in the time domain.

[0172] The control channel element (control channel element, CCE) is the basic unit of control channel resource scheduling, and 1 CCE is composed of 6 REGs in the frequency domain.

[0173] As an example, the RAN node can be a satellite base station or a satellite, which is described below in conjunction with FIGS. 8 and 9.

[0174] FIG. 8 is an example diagram of a communication system suitable for the communication method of the embodiments of the present application, which includes a satellite base station and a terminal type network element. The satellite base station provides communication services for terminal devices. The satellite base station transmits downlink data to the terminal, wherein the data is encoded using channel coding, and the channel coded data is transmitted to the terminal after being modulated by a constellation modulation. The terminal transmits uplink data to the satellite base station, which can also be encoded using channel coding, and the encoded data is transmitted to the satellite base station after being modulated by a constellation modulation. The satellite base station can also communicate with a base station. The satellite can act as a base station or a terminal device.

[0175] For example, the terminal device includes a smart phone, a smart watch, a tablet computer, and the like.

[0176] For example, the satellite can be a drone, a hot air balloon, a low earth orbit satellite, a medium earth orbit satellite, a high earth orbit satellite, and the like. The satellite can also refer to a non-ground base station or a non-ground device, and the like.

[0177] As an implementation manner, the present application can be applied to a satellite inter-satellite link communication system.

[0178] FIG. 9 is an example diagram of a communication system suitable for the communication method of the embodiments of the present application, wherein the satellite inter-satellite link communication system can be divided into two parts: an acquisition pointing tracking (APT) subsystem (including an ATP module and an ATP transmission / reception) and a communication subsystem (including a communication module and a transceiving antenna). The communication subsystem is responsible for the transmission of inter-satellite information, for example, the transmission of information between satellite 1 and satellite 2, which is the main body of the inter-satellite communication system, including the communication module and the transceiving antenna; the APT system is used to realize reliable communication between satellites or between a satellite and a ground station. The APT technology ensures that both parties of the communication can accurately align and maintain the communication link, even in the case of constantly changing relative positions. The system is composed of a coarse pointing (coarse tracking) subsystem, a fine pointing (fine tracking) subsystem, and a signal processing and control subsystem, which realize accurate acquisition, pointing, and tracking of the target to ensure that the error of the communication beam and the system optical axis is controlled within a certain range.

[0179] It should be understood that the current APT system is an optical system, which has the disadvantage of difficult optical alignment and the need for mechanical adjustment of pointing. The current communication subsystem is mostly an optical communication system, and there are also some microwave band systems, which mostly use a single high-gain antenna. The current APT system and the communication subsystem are independent systems. The disadvantage is that optical communication is easily affected by vibration and the like, and the rate is unstable; the millimeter wave frequency is low, the communication capacity is low, and the antenna needs to be mechanically adjusted for pointing.

[0180] As a further implementation manner, the present application can be applied to a scenario in which a terminal device communicates with another terminal device, for example, an Internet of Things communication system.

[0181] FIG. 10 is an example diagram of a communication system suitable for the communication method according to an embodiment of the present application, which includes a display device and a terminal type network element. The terminal network element establishes a connection with the display device after searching for the display device and performs data transmission to complete audio and video content delivery.

[0182] For example, the terminal device includes a smart phone, a tablet computer, and the like.

[0183] It should be understood that the screen projection scenario shown in FIG. 10 can be regarded as an example of terminal device communication, in which the smart phone and the television can both be regarded as a terminal device.

[0184] As a further implementation manner, the present application can be applied to an integrated access and backhaul (IAB) system.

[0185] FIG. 11 is an example diagram of a communication system suitable for the communication method according to an embodiment of the present application, which includes an IAB donor, an IAB node, and a terminal device for an access link and a backhaul link. The link between the IAB donor and the IAB node is a backhaul link, and the link between the terminal device and the IAB node is an access link.

[0186] It should be understood that the above system application scenarios are only examples, and the present application can also be applied to other scenarios, which are not listed one by one here.

[0187] In some possible implementation manners, the network device configures CSI-IM resources for the terminal device, which are used to measure interference from neighboring cells or other channels. These resources can be configured to have a specific time and frequency pattern so that the user equipment can accurately estimate the interference level. The configuration of the CSI-IM resources includes the selection of the resource pattern mode, which determines the specific distribution of the resource elements in time and frequency.

[0188] Optionally, the time can refer to a time domain resource, and the frequency can refer to a frequency domain resource.

[0189] As shown in FIG. 12, there are two possible RE patterns for CSI-IM resource, wherein pattern 0 is a pattern in which the CSI-IM resource occupies two consecutive subcarriers and two consecutive symbols; and wherein pattern 1 is a pattern in which the CSI-IM resource occupies four consecutive subcarriers in one symbol.

[0190] The CSI-IM resource only measures interference power, which is considered when calculating a channel quality indicator (CQI), for example. When calculating the interference power, the terminal device considers that the received power of the four REs in the CSI-IM pattern is under the same channel interference, i.e., averages the received power.

[0191] In some possible implementation manners, the channel measurement / interference measurement can be configured to be or not to be time-domain limited. If the time-domain limitation is configured, the reporting is performed only based on the latest measurement; and if the time-domain limitation is not configured, the calculation and reporting can be performed based on multiple previous measurements. As shown in FIG. 13(a), the channel measurement / interference measurement is not configured to be time-domain limited, and the calculation and reporting are performed based on multiple measurements; and as shown in FIG. 13(b), the channel measurement / interference measurement is configured to be time-domain limited, and the reporting is performed only based on the latest measurement.

[0192] In some possible implementation manners, one CSI-RS resource for channel measurement can correspond to one CSI-IM resource for interference measurement, or multiple (for example, at least two) CSI-RS resources for channel measurement can correspond to one CSI-IM resource for interference measurement, or multiple (for example, at least two) CSI-RS resources for channel measurement can correspond to multiple (for example, at least two) CSI-IM resources for interference measurement, which are not limited in the present application. In some possible implementation manners, the multiple CSI-RS resources for channel measurement are configured to be the same in time domain, i.e., all are time-domain averaged as shown in FIG. 14(a), and the time-domain averaged result is reported to CSI, or as shown in FIG. 14(b), none is time-domain averaged, and the reporting is performed only based on the latest measurement. In FIG. 14, CSI-RS 1 channel measurement (CM) is channel measurement on a first channel; CSI-RS 2 CM is channel measurement on a second channel; and the CSI-IM resource is interference measurement on interference of a neighbor cell / channel.

[0193] From the above, in the process of channel measurement and interference measurement, the interference problem of multiple beams is not considered. Due to the different energy carried by different beams, direct averaging when performing interference measurement will cause inaccurate measurement results. When performing time domain filtering, continuous time domain filtering is performed, or no time domain filtering is performed. In a dynamically changing wireless environment, the interference characteristics may change over time. If the filter parameters are fixed, it may not be able to adapt to such changes, resulting in poor suppression effect on interference and affecting the accuracy of measurement; in the case of no time domain filtering, the high-frequency interference components that may be contained in the signal cannot be effectively suppressed. These interference components may mask or interfere with normal signal components, resulting in biased measurement results and failing to truly reflect the actual interference level of the signal.

[0194] To solve this problem, the present application provides a communication method. In the communication method provided by the present application, time domain filtering information is configured for the CSI-IM resource, and the time domain filtering information is used to determine an interference measurement result.

[0195] In some possible implementation manners, the time domain filtering information includes a beam index, quasi co-location information, or time domain filtering number information.

[0196] The communication method in the present application can be applied to communication between a first communication device and a second communication device. The first communication device can be a network device or a terminal device, and the second communication device can be a network device or a terminal device.

[0197] The communication method in the present application can be applied to communication between a network device and a terminal device, communication between network devices, or communication between terminal devices. Hereinafter, the communication between a network device and a terminal device is taken as an example for description.

[0198] FIG. 15 is an example diagram of a communication method according to an embodiment of the present application. As shown in FIG. 15, the communication method can include S1510 and S1520.

[0199] S1510, a network device sends first information, the first information being used to configure time domain filtering information of a CSI-IM resource, the time domain filtering information including a beam index, quasi co-location information, or time domain filtering number information, and the time domain filtering information being used to determine an interference measurement result. Correspondingly, a terminal device receives the first information.

[0200] In some possible implementation manners, the interference measurement result is determined based on the CSI-IM resource corresponding to the same time domain filtering information.

[0201] It can be understood that the same time domain filtering information can be the same beam index, the same quasi co-location information, or the same time domain filtering number information.

[0202] In some possible implementation manners, the time domain filtering number information of the CSI-IM resource configurations corresponding to the same beam index and / or the same quasi co-location information is the same.

[0203] Optionally, the beam index can also be understood as a beam identifier, a beam number, or a beam number, and the like information used for identifying a beam.

[0204] S1520, the terminal device sends the interference measurement result. Correspondingly, the network device receives the interference measurement result.

[0205] In some possible implementation manners, the first information includes one time domain filtering information.

[0206] For example, one beam index, quasi co-location information, or time domain filtering number information is included in one CSI-IM resource configuration.

[0207] Optionally, one CSI-IM resource configuration includes one time domain filtering information, that is, one CSI-IM resource corresponds to one time domain filtering information.

[0208] As an example, in order to let the terminal device measure the interference of the channel or signal of the communication network, the network device configures the CSI-IM resource on the carrier of the spectrum sharing of the communication network for the terminal device, the CSI-IM resource includes the RE of the channel or signal of the communication network, and the channel or signal of the communication network includes at least one of the following: SSB: PSS, SSS, physical broadcast channel (PBCH), PBCH demodulation reference signal (DMRS); CORESET: PDCCH, PDCCH DMRS; PDSCH: PDSCH, PDSCH DMRS.

[0209] The network device configures the CSI-IM resource for the terminal device, and the CSI-IM resource includes one or more frequency domain resources,

[0210] For example, the frequency domain resource can be a frequency band, and one frequency band includes one or more RBs. The resource block can be a scheduling / configuration unit of the frequency domain resource. One resource block includes one or more subcarriers, and the subcarrier is the smallest unit of the frequency domain.

[0211] In some possible implementation manners, the network devices can interact the resource positions and the transmission power parameters of the SSB, CORESET, PDSCH, and the like.

[0212] It can be understood that the network device can also notify the terminal device of the parameter information of the signals or channels of other network devices interacting with the network device when configuring the CSI-IM resource, and the parameter information includes information of resource positions of SSB, CORESET, PDSCH, etc. and / or information of transmission power.

[0213] In some possible implementation manners, the network device can send second information for configuring CSI-RS resources corresponding to one or more CSI-IM resources. Accordingly, the terminal device receives the second information.

[0214] Optionally, the terminal device also performs interference measurement of one or more neighboring areas or channels when performing channel measurement of one channel.

[0215] Optionally, when the terminal device measures the CSI-RS resources of multiple channel measurements and reports the CSI, the terminal device can report the CSI-RS resource index (CM-CRI) of the channel measurement.

[0216] After the interference measurement is completed, the terminal device reports the channel state information (CSI) corresponding to one CSI-IM resource and reports the CSI-IM resource index (IM-CRI).

[0217] In some possible implementation manners, when performing channel measurement of multiple channels, interference measurement of multiple neighboring areas / channels is also performed, and the UE reports the CSI of one channel measurement CSI-RS resource and one interference measurement CSI-IM resource, and reports the CM-CRI of the channel measurement and the IM-CRI of the interference measurement.

[0218] For example, as shown in FIG. 16, when performing channel measurement based on the CSI-RS resource, interference measurement of two neighboring areas / channels corresponding to the CSI-IM resource 1 and the CSI-IM resource 2 is also performed.

[0219] In some possible implementation manners, at least one of the time domain index, the period, or the time domain filtering information is included in the CSI-IM resource configuration.

[0220] For example, the network device configures N1 CSI-RS resources for the terminal device, N1 is a positive integer, and N2 neighboring area / channel interference measurements are performed when performing each channel measurement, N2 is a positive integer. The configuration information is as follows.

[0221] CSI-IM resource 0: indicates symbol index, slot index; configuration period, such as 5ms, 10ms, 20ms, 40ms, etc.; indicates time domain filtering information.

[0222] CSI-IM resource 1: indicates symbol index, slot index; configuration period, such as 5ms, 10ms, 20ms, 40ms, etc.; indicates time domain filtering information.

[0223] CSI-IM resource 2: indicates symbol index, slot index; configuration period, such as 5ms, 10ms, 20ms, 40ms, etc.; indicates time domain filtering information.

[0224] CSI-IM resource N2-1 (such as N2=4): indicates symbol index, slot index; configuration period, such as 5ms, 10ms, 20ms, 40ms, etc.; indicates time domain filtering information. In some possible implementation manners, the terminal device performs interference measurement according to the CSI-IM resource configured by the network device.

[0225] For example, the terminal device can perform time domain filtering on the interference measurement of the CSI-IM resource under the same time domain filtering information, and determine the interference situation under the time domain filtering information. The terminal device can perform time domain filtering on the resource of a beam or a channel, or perform time domain filtering on the resource with the same time domain filtering number.

[0226] Optionally, the terminal device can perform interference measurement by using an existing interference measurement method, such as interference power averaging, or interference power normalization, etc.

[0227] In some possible implementation manners, the network device sends fifth information, and the fifth information is used to indicate a time domain filtering threshold parameter used to determine an interference measurement result. Correspondingly, the terminal device receives the fifth information.

[0228] Optionally, the threshold parameter includes a threshold range or a threshold difference.

[0229] For example, for the CSI-IM resource of a certain time domain filtering information configured by the network device, the neighbor network device can not send an SSB, and can transmit a PDSCH. In order to more accurately perform interference measurement on beam interference and perform time domain filtering, the terminal device can perform time domain filtering based on the threshold range or the threshold difference.

[0230] It can be understood that the time domain filtering based on the threshold parameter means that only the interference measurement result of the resource within the threshold parameter is subjected to time domain filtering.

[0231] For example, the threshold parameter can be a protocol predefined threshold range, such as -3dB~3dB, or a network device indicated threshold range, such as -5dB~5dB.

[0232] For example, the threshold parameter can be a protocol predefined threshold range, such as -3dB~3dB, or a network device indicated threshold range, such as -5dB~5dB.

[0233] For example, the terminal device can average the interference of the resources within the threshold parameter based on the first measurement, or average the interference of the resources within the threshold parameter based on multiple measurements.

[0234] For example, the terminal device can perform time domain filtering on the interference of the resources meeting the threshold parameter requirement based on the first measurement, or perform time domain filtering on the interference of the resources meeting the threshold parameter requirement based on multiple measurements.

[0235] For example, for the same CSI-IM resource, if the terminal device measures the interference measurement result exceeding the threshold difference / threshold range, the terminal device does not perform time domain filtering for the interference measurement at this moment, i.e., skips this measurement.

[0236] Optionally, the time domain filtering in the present application can be time domain averaging, time domain difference, time domain extension, or time domain prediction, or other time domain filtering processing. Specifically, the present application does not limit this.

[0237] In some possible implementation manners, the terminal device can report the time / resource identifier corresponding to the interference measurement exceeding the threshold difference / threshold range. That is, the terminal device can inform the network device which time / resource identifier of the interference measurement exceeds the threshold difference / threshold range.

[0238] In some possible implementation manners, the terminal device can report the time / resource identifier corresponding to the interference measurement not meeting the threshold parameter requirement. That is, the terminal device can inform the network device which time / resource identifier of the interference measurement does not meet the threshold parameter.

[0239] In some possible implementation manners, the terminal device can report the time / resource identifier corresponding to the interference measurement greater than the threshold difference / threshold range. That is, the terminal device can inform the network device which time / resource identifier of the interference measurement is greater than the threshold difference / threshold range.

[0240] In some possible implementation manners, the terminal device can report the time instants / resources corresponding to the interference measurement less than the threshold difference / threshold range. That is, the terminal device can inform the network device of the time instants / resources whose interference measurement is less than the threshold difference / threshold range.

[0241] Through the feedback of the terminal device, the network device can know the interference situation of each channel in the communication network.

[0242] In some possible implementation manners, the interference measurement result is determined based on the CSI-IM resource corresponding to the same time domain filtering information and satisfying the time domain filtering threshold parameter.

[0243] In some possible implementation manners, when the CSI-IM resource includes a plurality of frequency bands, the terminal device can respectively feed back the channel state information or the channel quality information for each frequency band.

[0244] In some possible implementation manners, when the CSI-IM resource includes a plurality of symbol groups, the terminal device can respectively feed back the channel state information or the channel quality information for each symbol group.

[0245] In some possible implementation manners, the interference measurement result of the neighbor cell measurement includes the signal quality information, and / or the channel state information.

[0246] For example, the signal quality information can include one or more of a reference signal received power (RSRP), an interference measurement reference signal received power (IM-RSRP), a signal to interference plus noise ratio (SINR), and a signal to noise ratio (SNR).

[0247] For example, the channel state information can include one or more of a channel quality indicator (CQI), an RSRP, a reference signal received quality (RSRQ), a received signal strength indicator (RSSI), a precoding matrix indicator (PMI), a rank indicator (RI), and a layer indicator (LI).

[0248] In some possible implementation manners, the network device configures a CSI-IM resource for the terminal device, and configures a reporting parameter in reporting configuration of the CSI-IM resource, wherein the reporting parameter includes IM-RSRP.

[0249] In some possible implementation manners, the network device configures a CSI-RS resource for the terminal device, and configures a reporting parameter in reporting configuration of the CSI-RS resource, wherein the reporting parameter includes IM-RSRP.

[0250] In some possible implementation manners, the channel state information reported by the terminal device can be SINR or CQI.

[0251] The CQI can be selected by the receiving end based on a measured signal-to-noise ratio (SNR) or signal-to-interference-and-noise ratio (SINR).

[0252] For example, the value of CQI is selected from a predefined table, which maps the SINR / SNR value to the index of CQI. This mapping is based on an assumption that a higher SINR / SNR value indicates better channel conditions, allowing a higher data rate to be used. CQI is selected based on the current channel conditions and the target block error rate (BLER) using the predefined mapping table.

[0253] SINR is a key indicator of signal quality, especially in wireless communication systems. The formula for calculating SINR is:

[0254] P s is the power of the received signal, P i is the power of the interference signal, and P n is the noise power of the receiving end.

[0255] In some possible implementation manners, the interference condition is included in CQI. For example, the above formula for calculating SINR includes interference information, which includes the power of the received signal or the power of the interference signal or the noise power of the receiving end. The CSI-IM resource is included in the configuration of the related measurement resource for reporting CQI.

[0256] In some possible implementation manners, the network device sends third information, which is used to indicate whether to report the interference measurement result. Correspondingly, the terminal device receives the third information.

[0257] In some possible implementation manners, the network device can indicate whether the terminal device reports the RSRP (IM-RSRP) of the interference.

[0258] For example, the network device indicates whether to report the IM-RSRP in the reporting configuration.

[0259] For example, the IM-RSRP reporting can be periodic reporting, semi-persistent reporting, or aperiodic reporting.

[0260] In some possible implementation manners, the network device can configure one or more CSI-IM resources for the terminal device.

[0261] In some possible implementation manners, the terminal device can report time domain filtering information corresponding to the interference measurement result, or identification information (such as a CSI-IM resource ID) of the CSI-IM resource corresponding to the interference measurement result.

[0262] In some possible implementation manners, the network device sends fourth information, and the fourth information is used to indicate a maximum reporting number and / or a reporting threshold of the interference measurement result. Correspondingly, the terminal device receives the fourth information.

[0263] For example, the network device can indicate a number of IM-RSRPs reported by the terminal device, and / or a threshold of the reporting.

[0264] For example, the terminal device can report, according to the number of the reporting, a CSI-IM resource ID and a corresponding IM-RSRP with a higher value of the IM-RSRP in priority.

[0265] For example, the terminal device can determine, according to the threshold of the reporting, an IM-RSRP corresponding to a CSI-IM resource greater than the threshold. For example, the terminal device reports a bitmap corresponding to the CSI-IM resource ID, 1 represents greater than (or greater than or equal to) the threshold, and 0 represents less than (or less than or equal to) the threshold. The terminal device can further feed back the IM-RSRP for the CSI-IM resource greater than (or greater than or equal to) the threshold.

[0266] In some possible implementation manners, the terminal device performs IM-RSRP reporting in a quantized manner.

[0267] For example, the number of quantization bits is N bits, and N is a positive integer. For example, N is 4 or 7. When N is 7, the reporting range of the IM-RSRP can be 0-127, and there are 128 values, the reporting value 0 is equal to SINR<-23dB, the reporting value 127 represents SINR>40dB, and the measurement reporting accuracy is 0.5dB.

[0268] In some possible implementation manners, the terminal device can perform threshold-based differential IM-RSRP reporting, and report an offset relative to the threshold.

[0269] In some possible implementation manners, the terminal device can perform differential reporting between resources for multiple CSI-IM resources.

[0270] For example, the terminal device reports the first IM-RSRP of the first CSI-IM resource, and the IM-RSRP of the second CSI-IM resource is differentially reported, that is, the reported value (second IM-RSRP) of the IM-RSRP of the second CSI-IM resource is a power offset relative to the first IM-RSRP.

[0271] In some possible implementation manners, the first information includes a plurality of time domain filtering information.

[0272] For example, a plurality of (such as at least two) beam indexes, quasi co-location information or time domain filtering number information are included in the resources of one CSI-IM resource configuration.

[0273] In some possible implementation manners, one CSI-IM resource configuration includes a plurality of time domain filtering information, that is, one CSI-IM resource corresponds to a plurality of time domain filtering information.

[0274] In some possible implementation manners, the network device can configure an interference measurement resource when configuring a channel measurement resource of one channel for the terminal device. The terminal device can report the CSI of the CSI-IM resource of one beam index or channel index, and report the beam index or channel index of the IM. As shown in FIG. 17.

[0275] In some possible implementation manners, the network device can indicate at least one of the following: the number of beams, the number of QCLs, or the pattern of the CSI-IM resource.

[0276] As an example, the configuration or indication manner of the CSI-IM resource can include at least one of the following:

[0277] In some possible implementation manners, the first information further includes number information of the time domain filtering information.

[0278] For example, the number of beams is specified by using a predefined manner. When configuring SSB beams, 4 beams are configured for a frequency band less than 3 GHz, 8 beams are configured for a frequency band of 3-6 GHz, and 64 beams are configured for a frequency band of 6-52.6 GHz.

[0279] In some possible implementation manners, the first information further includes a time domain pattern.

[0280] Optionally, the time domain pattern is used to indicate a plurality of time domain resources of the CSI-IM resource, and the plurality of time domain resources have an association relationship with the plurality of time domain filtering information.

[0281] Optionally, the time domain pattern is used to determine a plurality of time domain resources of the CSI-IM resource, and the plurality of time domain resources have an association relationship with the plurality of time domain filtering information.

[0282] For example, the terminal device can determine the plurality of time domain filtering information corresponding to the plurality of time domain resources of the CSI-IM resource according to the time domain pattern.

[0283] In some possible implementation manners, the first information further includes subcarrier spacing information.

[0284] Optionally, the subcarrier spacing information is used to determine the relationship between the time domain resource of the CSI-IM resource and the time domain filtering information.

[0285] Optionally, the subcarrier spacing information and the time domain information of the time domain resource of the CSI-IM resource have a correlation relationship.

[0286] For example, the time domain information of the time domain resource of the CSI-IM resource can include at least one of the following: symbol index, slot index, or subframe index.

[0287] Optionally, the time domain information of the time domain resource of the CSI-IM resource can be referred to as CSI-IM resource time domain information.

[0288] In some possible implementation manners, in order to enable the terminal device to perform interference measurement at a correct time domain position, the subcarrier spacing and the time domain information have a corresponding relationship, that is, the time domain patterns corresponding to different subcarrier spacings can be different.

[0289] Optionally, the terminal device can determine the time domain pattern according to the subcarrier spacing information.

[0290] Optionally, the terminal device can determine the time domain pattern according to the carrier of the communication and the subcarrier spacing information.

[0291] The carrier of the communication can refer to the frequency band, carrier frequency, center frequency point, or carrier frequency of the communication.

[0292] For example, in the time domain pattern, the shaded part is the candidate time domain region, and the first symbol index is determined according to the SCS of the SSB block as follows, where index 0 corresponds to the first symbol of the first slot in the half frame.

[0293] It can be understood that when the subcarrier spacing is different, the number of slots included in each subframe is also different, and the corresponding relationship is shown in Table 2. Therefore, the time domain patterns corresponding to different subcarrier spacings are also different.

[0294] As shown in FIG. 18, when SCS = 15 KHZ, the first symbol of the candidate SS / PBCH block has an index of {2, 8} + 14·n.

[0295] For operation of unshared spectrum channel access:

[0296] For carrier frequencies less than or equal to 3 GHz, as one example: n = 0, 1.

[0297] For carrier frequencies greater than 3 GHz in FR1, as one example: n = 0, 1, 2, 3.

[0298] For operation with shared spectrum channel access, as one example: n = 0, 1, 2, 3, 4, 5, 6, 7, 8, 9.

[0299] As illustrated in FIGURE 19, when SCS = 30 KHZ, the first symbol of a candidate SS / PBCH block can have indices {4, 8, 16, 20} + 28·n.

[0300] For carrier frequencies less than or equal to 3 GHz, as one example: n = 0. For carrier frequencies greater than 3 GHz in FR1, as one example: n = 0, 1.

[0301] As illustrated in FIGURE 20, when SCS = 30 KHZ, the first symbol of a candidate SS / PBCH block can also have indices {2, 8} + 14·n.

[0302] For operation with unshared spectrum channel access: for paired spectrum operation: for carrier frequencies less than or equal to 3 GHz, as one example: n = 0, 1. For carrier frequencies greater than 3 GHz in FR1, as one example: n = 0, 1, 2, 3; for unpaired spectrum operation: for carrier frequencies less than 1.88 GHz, as one example: n = 0, 1. For carrier frequencies greater than or equal to 1.88 GHz in FR1, as one example: n = 0, 1, 2, 3.

[0303] For operation with shared spectrum channel access, as one example: n = 0, 1, 2, 3, 4, 5, 6, 7, 8, 9.

[0304] As illustrated in FIGURE 21, SCS = 120 KHZ, the first symbol of a candidate SS / PBCH block has indices {4, 8, 16, 20} + 28·n. For carrier frequencies within FR2, as one example: n = 0, 1, 2, 3, 5, 6, 7, 8, 10, 11, 12, 13, 15, 16, 17, 18.

[0305] As illustrated in FIGURE 22, SCS = 240 KHZ, the first symbol of a candidate SS / PBCH block has indices {8, 12, 16, 20, 32, 36, 40, 44} + 56·n. For carrier frequencies within FR2-1, as one example: n = 0, 1, 2, 3, 5, 6, 7, 8.

[0306] SCS = 480 KHz: The first symbol of the candidate SS / PBCH block has index {2, 9} + 14 · n. For carrier frequencies within FR2-2, as an example: n = 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31.

[0307] SCS = 960 KHz: The first symbol of the candidate SS / PBCH block has index {2, 9} + 14 · n. For carrier frequencies within FR2-2, as an example: n = 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31.

[0308] In some possible implementation, the interference measurement is used to measure the interference situation of the CORESET.

[0309] In some possible implementation, the interference measurement resource configuration further comprises at least one of the following: symbol index, slot index, or time domain pattern.

[0310] Optionally, the index in the present disclosure can be understood as identification, number, or label, etc.

[0311] For example, the quantity information of the time domain filtering information is 4, denoted as 4 beams (such as corresponding beam identification or beam index are beam0, beam1, beam2, beam3, respectively), for example, the symbol bitmap is 10001000100010, corresponding to 0, 4, 8, 12. Symbol 0 corresponds to beam0, symbol 4 corresponds to beam1, symbol 8 corresponds to beam2, and symbol 12 corresponds to beam3.

[0312] For example, the quantity information of the time domain filtering information is 8, denoted as 8 beams (such as corresponding beam identification or beam index are beam0, beam1, beam2, beam3, beam4, beam5, beam6, beam7, respectively), Symbol bitmap is 1000100010001010001000100010, corresponding to 0, 4, 8, 12. Symbol 0 corresponds to beam0, symbol 4 corresponds to beam1, symbol 8 corresponds to beam2, symbol 12 corresponds to beam3, symbol 14 corresponds to beam4, symbol 18 corresponds to beam5, symbol 22 corresponds to beam6, and symbol 26 corresponds to beam7.

[0313] In some possible implementation manners, the number of beam IDs is determined according to the number of 1s in the Symbol bitmap, or the number of beam IDs is indicated, such as 4, 8, 10, or 64.

[0314] For example, if the Symbol bitmap is 10001000100010, the number of beam IDs is 4.

[0315] As shown in FIG. 23, the terminal device can perform time domain filtering (such as time domain filtering averaging) on the interference measurement results of the interference measurement resource corresponding to the same beam ID.

[0316] In some possible implementation manners, the terminal device can perform interference measurement according to the CSI-IM resource configured by the network device.

[0317] For example, the terminal device can perform time domain filtering on the interference measurement of the CSI-IM resource under the same time domain filtering information, and determine the interference condition under the time domain filtering information. The terminal device can perform time domain filtering on the resource of the beam or channel, or the resource with the same time domain filtering number.

[0318] Optionally, the terminal device can perform interference measurement by using the existing interference measurement method, such as interference power averaging, interference power normalization, or the like.

[0319] In some possible implementation manners, the terminal device can perform time domain filtering based on a threshold parameter, and the threshold parameter includes a threshold range or a threshold difference.

[0320] For example, for the CSI-IM resource of a certain time domain filtering information configured, the neighbor network device can not transmit SSB, and can transmit PDSCH. In order to more accurately perform interference measurement on beam interference, time domain filtering is performed, and the terminal device can perform time domain filtering based on the threshold range or the threshold difference.

[0321] It can be understood that the time domain filtering based on the threshold parameter means that only the interference measurement result of the resource within the threshold parameter is subjected to time domain filtering.

[0322] For example, the threshold parameter can be a protocol predefined threshold range, such as -3dB~3dB, -5dB~5dB, or the threshold range can be UE specific or configured for the CSI-IM resource; or the threshold parameter can be a protocol predefined threshold difference, such as 3dB, 5dB, or the like, and the threshold difference can be UE specific or configured for the CSI-IM resource.

[0323] Exemplarily, the terminal device can perform time domain filtering on the interference of the resource meeting the threshold parameter requirement based on the first measurement or based on multiple measurements.

[0324] Exemplarily, the terminal device can perform time domain filtering on the interference of the resource meeting the threshold parameter requirement based on the first measurement or based on multiple measurements.

[0325] Exemplarily, if the terminal device measures the interference measurement result exceeding the threshold difference / threshold range, the terminal device does not perform time domain filtering on the interference measurement at the moment, i.e., skips this measurement, for the same time domain filtering information CSI-IM resource.

[0326] In some possible implementation manners, the terminal device can report the moment / resource identifier corresponding to the interference measurement exceeding the threshold difference / threshold range. That is, the terminal can inform the network device which moment / resource identifier of the interference measurement exceeds the threshold difference / threshold range.

[0327] In some possible implementation manners, the terminal device can report the moment / resource identifier corresponding to the interference measurement not meeting the threshold parameter requirement. That is, the terminal device can inform the network device which moment / resource identifier of the interference measurement does not meet the threshold parameter.

[0328] In some possible implementation manners, the terminal device can report the moment / resource identifier corresponding to the interference measurement greater than the threshold difference / threshold range. That is, the terminal can inform the network device which moment / resource identifier of the interference measurement is greater than the threshold difference / threshold range.

[0329] In some possible implementation manners, the terminal device can report the moment / resource identifier corresponding to the interference measurement less than the threshold difference / threshold range. That is, the terminal can inform the network device which moment / resource identifier of the interference measurement is less than the threshold difference / threshold range.

[0330] Through the feedback of the terminal device, the network device can know the interference situation of each channel in the communication network.

[0331] In some possible implementation manners, when the CSI-IM resource includes multiple frequency bands, the terminal device can respectively feed back the channel state information or the channel quality information for each frequency band.

[0332] In some possible implementation manners, when the CSI-IM resource includes multiple symbol groups, the terminal device can respectively feed back the channel state information or the channel quality information for each symbol group.

[0333] In some possible implementations, the interference measurement result of the neighbor cell measurement includes signal quality information, and / or channel state information.

[0334] For example, the signal quality information can include one or more of reference signal received power, interference measurement reference signal received power, signal to interference plus noise ratio, signal to noise ratio.

[0335] For example, the channel state information can include one or more of channel quality information, RSRP, reference signal received quality, received signal strength indication, precoding matrix indication, rank indication, or layer indication.

[0336] In some possible implementations, the network device configures a CSI-IM resource for the terminal device, and configures a reporting parameter in the reporting configuration of the CSI-IM resource, wherein the reporting parameter includes IM-RSRP.

[0337] In some possible implementations, the network device configures a CSI-RS resource for the terminal device, and configures a reporting parameter in the reporting configuration of the CSI-RS resource, wherein the reporting parameter includes IM-RSRP.

[0338] In some possible implementations, the channel state information reported by the terminal device can be SINR or CQI.

[0339] For example, the CQI is selected by the receiving end based on the measured signal to noise ratio or signal to interference and noise ratio.

[0340] The value of CQI is selected from a predefined table, which maps the SINR / SNR value to the index of CQI. This mapping is based on the assumption that a higher SINR / SNR value indicates better channel conditions, allowing higher data rates to be used. CQI is selected based on the current channel conditions and target BLER using the predefined mapping table.

[0341] SINR is a key indicator of signal quality, especially in wireless communication systems. The formula for calculating SINR is:

[0342] P s is the power of the received signal, P i is the power of the interference signal, and P n is the noise power of the receiving end.

[0343] In some possible implementations, the interference information is included in CQI. For example, the interference information includes the power of the received signal or the power of the interference signal or the noise power of the receiving end in the calculation formula of the above-mentioned SINR. The CSI-IM resource is included in the configuration of the related measurement resource of the CQI reporting.

[0344] In some possible implementation manners, the network device can indicate whether the terminal device reports an interference RSRP (IM-RSRP).

[0345] For example, the network device indicates in the reporting configuration whether to report the IM-RSRP.

[0346] For example, the IM-RSRP reporting can be periodic reporting, semi-persistent reporting, or aperiodic reporting.

[0347] In some possible implementation manners, the network device can configure one or more CSI-IM resources for the terminal device.

[0348] In some possible implementation manners, the interference measurement result that the terminal device can report includes an interference measurement resource identifier, time domain filtering information, and / or an IM-RSRP corresponding to the resource identifier.

[0349] In some possible implementation manners, the network device can indicate a number of IM-RSRPs that the terminal device reports, and / or a threshold.

[0350] For example, the terminal device can report, according to the number, time domain filtering information of a CSI-IM resource with a higher IM-RSRP value and an IM-RSRP corresponding to the CSI-IM resource.

[0351] For example, the terminal device can determine, according to the threshold, an IM-RSRP corresponding to a CSI-IM resource with time domain filtering information greater than the threshold. For example, the terminal device reports a bitmap corresponding to the time domain filtering information of the CSI-IM resource, 1 represents greater than or equal to the threshold, and 0 represents less than the threshold. The terminal device can further feed back an IM-RSRP corresponding to the CSI-IM resource with time domain filtering information greater than or equal to the threshold.

[0352] In some possible implementation manners, when the terminal device performs IM-RSRP reporting, the terminal device performs IM-RSRP quantization reporting.

[0353] For example, the number of quantization bits is N bits, and N is a positive integer. For example, N is 4 or 7. When N is 7, the reporting range of the IM-RSRP can be 0-127, a total of 128 values, the reporting value 0 is equal to SINR<-23dB, the reporting value 127 represents SINR>40dB, and the measurement reporting accuracy is 0.5dB.

[0354] In some possible implementation manners, the terminal device can perform threshold-based differential IM-RSRP reporting, and report an offset relative to the threshold.

[0355] In some possible implementation manners, the terminal device can perform differential reporting between the time domain filtering information corresponding to the plurality of CSI-IM resources.

[0356] For example, the terminal device reports the first IM-RSRP of the CSI-IM resource corresponding to the first time domain resource information, and the IM-RSRP of the CSI-IM resource corresponding to the second time domain resource information is differentially reported, that is, the reported value (second IM-RSRP) of the IM-RSRP of the CSI-IM resource corresponding to the second time domain resource information is the power offset relative to the first IM-RSRP.

[0357] FIG. 24 is a structural schematic diagram of a communication apparatus according to an embodiment of the present application. As shown in FIG. 24, the communication apparatus 2400 can include a processing unit 2410 and a transceiver unit 2420.

[0358] For example, the processing unit 2410 can be configured to determine configuration information of the CSI-IM resource, wherein the CSI-IM resource configuration information includes a beam index, quasi co-location information or time domain filtering number information. The processing unit can also be configured to determine channel state information according to the CSI-IM resource configuration information.

[0359] For example, the transceiver unit 2420 can be configured to send the configuration information of the CSI-IM resource. The transceiver unit 2420 can also be configured to receive the channel state information. The transceiver unit 2420 can also be configured to receive the configuration information of the CSI-IM resource, wherein the CSI-IM resource configuration information includes a beam index, quasi co-location information or time domain filtering number information. The transceiver unit 2420 can also be configured to send the channel state information.

[0360] FIG. 25 is a structural schematic diagram of a communication apparatus according to an embodiment of the present application. As shown in FIG. 25, the communication apparatus 2500 can include a processor 2510, an interface circuit 2520 and a memory 2530.

[0361] For example, the processor 2510 and the interface circuit 2520 are coupled to each other. The interface circuit can be a transceiver or an input / output interface.

[0362] Optionally, the communication device can further include a memory 2530 for storing instructions executed by the processor 2510 or storing input data required by the processor 2510 to run the instructions or storing data generated after the memory 2530 runs the instructions. Sometimes, the interface circuit 2520 can also be part of the processor, and in this case, the communication device includes the processor 2510. The processor 2510 is configured to determine the configuration information of the CSI-IM resource, and the CSI-IM resource configuration information includes beam / QCL information / time domain filtering number information. The interface circuit 2520 is configured to send the configuration information of the CSI-IM resource. The interface circuit 2520 is configured to receive the channel state information.

[0363] Optionally, the interface circuit is configured to receive the configuration information of the CSI-IM resource, and the CSI-IM resource configuration information includes beam / QCL information / time domain filtering number information. The processor is configured to determine the channel state information according to the CSI-IM resource configuration information. The interface circuit is configured to send the channel state information.

[0364] FIG. 26 is a schematic diagram of a system architecture according to an embodiment of the present application. The system architecture can be used to implement the functions in FIG. 15 of the present application. The system architecture includes a service management and orchestration framework, a non-real-time RAN intelligent controller, a near-real-time RAN intelligent controller, an O-RAN convergence unit, an O-RAN convergence unit control plane, an O-RAN convergence unit user plane, an O-RAN distribution unit, an O-RAN radio frequency unit, and an O-RAN cloud.

[0365] Among them, service management and orchestration framework (SMO): its function is similar to network management. Non-Real Time RAN intelligent controller (Non-RT RIC): used to implement non-real-time intelligent management of RAN. And guide the application / function in Near-RT RIC based on policy. Non-RT RIC is located in the SMO module. Near-Real Time RAN intelligent controller (Near-RT RIC): used to implement near-real-time intelligent management of RAN. Through data collection and related operations on the E2 interface, near-real-time control and optimization of modules and resources of O-RAN are realized. O-RAN central unit (O-CU): used to implement radio resource control (RRC) layer, packet data convergence protocol (PDCP) layer, and service data adaptation protocol (SDAP) layer and other control functions in 3GPP standards. O-RAN central unit control plane (O-CU-CP): similar to CU-CP in NR system, used to implement the functions of RRC layer, and control plane functions of PDCP layer. Belongs to the part of O-CU. O-RAN distributed unit (O-DU): based on low-layer function segmentation, used to implement radio link control (RLC) layer, media access control (MAC) layer, and higher physical layer (Higher PHY) in 3GPP standards. Among them, the higher physical layer functions include one or more of the following: forward error correction (FEC) encoding / decoding, scrambling / descrambling, or modulation / demodulation. O-RAN radio unit (O-RU): based on low-layer function segmentation, used to implement lower physical layer (Lower PHY) functions and radio frequency functions in 3GPP standards.The low physical layer function includes one or more of the following: fast fourier transform (FFT) transform / inverse fast fourier transformation (iFFT) transform, digital beamforming, or extraction and filtering of a physical random access channel (PRACH), etc. Similar to a transmission reception point (TRP) or a remote radio head (RRH) in 3GPP, but including low physical layer functions such as FFT / iFFT or extraction of a PRACH.

[0366] In FIG. 26, the NG interface is an interface between an NR RAN device (such as a base station, a CU, a CU-CP, or a CU-UP) and an NR core network; wherein NG-u is a user plane NG interface, and NG-c is a control plane NG interface.

[0367] The Xn interface is an interface between NR RAN devices (such as base stations, CUs, CU-CPs, or CU-UPs); wherein Xn-u is a user plane Xn interface, and Xn-c is a control plane Xn interface.

[0368] The X2 interface is an interface between LTE RAN devices; wherein X2-u is a user plane X2 interface, and X2-c is a control plane X2 interface. In NR, the X2 interface is mainly used in the E-UTRA-NR dual connectivity (EN-DC) scenario, wherein the master station is an LTE RAN device connected to an LTE core network through the X2 interface.

[0369] The E1 interface is an interface between a CU-CP and a CU-UP. The F1-C interface is an interface between a CU-CP and a DU. The F1-U interface is an interface between a CU-UP and a DU.

[0370] FIG. 27 is a schematic diagram of a system architecture according to an embodiment of the present application. The system architecture can be used to implement the functions in FIG. 15. It includes a core network device, a control unit (CU), a distributed unit (DU), a radio frequency unit (RU), and a terminal device.

[0371] As an example, an access network device (RAN, which can be an eNB or gNB or next generation access network device) communicates with a core network (CN) through a backhaul link and communicates with a terminal device through an air interface. Specifically, a baseband unit (BBU) in the access network device communicates with the core network through the backhaul link, and a radio unit (RU) in the access network device communicates with at least one UE through the air interface. The BBU communicates with at least one RU through a fronthaul link, and the BBU and the RU can be co-located or not co-located. The BBU includes at least one control unit (CU) and at least one distributed unit (DU), which can communicate through at least one midhaul link.

[0372] FIG. 28 is a schematic diagram of a device function division according to an embodiment of the present application. The device can be used to implement the functions in FIG. 15 of the present application.

[0373] In some examples, the CU is a logical node that carries the RRC layer, the SDAP layer, the PDCP layer, and other control functions of the access network device. The CU is connected to network nodes such as the core network through some interfaces, which can be E2 interfaces or the like. Optionally, the CU can have part of the functions of the core network. The CU (e.g., the PDCP layer and higher layers) is connected to the DU (e.g., the RLC layer and lower layers) through some interfaces, which can be F1 interfaces or the like. In some examples, these interfaces (e.g., F1 interfaces) can provide control plane (C-Plane) and user plane (U-Plane) functions (e.g., interface management, system information management, UE context management, RRC message transmission, etc.). F1AP is an application protocol for the F1 interface, which defines the signaling procedures of F1 in some examples. The F1 interface supports control plane F1-C and user plane F1-U.

[0374] In some examples, the CU can be split into a CU-CP (control unit-control plane) and a CU-UP (control unit-user plane), where the CU-CP is a logical node carrying the RRC layer and the PDCP-C (control plane part of PDCP) layer, used to implement the control plane function of the CU. The CU-CP can interact with a network element in the core network used to implement the control plane function. The network element in the core network used to implement the control plane function can be an access and mobility function network element, such as an access and mobility management function (AMF) in a 5G system. The AMF network element is used to be responsible for mobility management in a mobile network, such as location updating of a terminal device, registration of the terminal device to a network, handover of the terminal device, and the like. The CU-UP is a logical node carrying the SDAP layer and the PDCP-U (user plane part of PDCP) layer, used to implement the user plane function of the CU. The CU-UP can interact with a network element in the core network used to implement the user plane function. The network element in the core network used to implement the user plane function, for example, a user plane function (UPF) in a 5G system, is used to be responsible for forwarding and receiving data in a terminal device. The above configuration of the CU and the DU is only an example, and the CU and the DU can have other functions according to needs. For example, the CU or the DU can be configured to have more protocol layer functions, or the CU or the DU can be configured to have partial processing functions of the protocol layers. For example, partial functions of the RLC layer and functions of the protocol layers above the RLC layer are arranged in the CU, and the remaining functions of the RLC layer and functions of the protocol layers below the RLC layer are arranged in the DU. For another example, the functions of the CU or the DU can be divided according to service types or other system requirements, for example, functions requiring to meet a shorter delay requirement in processing time are arranged in the DU, and functions not requiring to meet the delay requirement are arranged in the CU.

[0375] In some examples, the DU is a logical node carrying the RLC layer, the MAC layer, the Higher PHY layer, and other functions. In some examples, the DU can control at least one RU. The DU is connected to the RU through some interfaces, which can be a front-haul interface. In some examples, the Higher PHY layer includes part of the PHY layer processing, such as FEC encoding and decoding, scrambling, modulation and demodulation, and the like.

[0376] In some examples, a RU is a logical node that hosts Lower PHY and radio frequency (RF) chain processing. In some examples, a RU can be a 3GPP transmission reception point (TRP) or a remote radio head (RRH) or other similar functional entity. In some examples, a Low-PHY includes portions of PHY processing such as fast Fourier transform (FFT), inverse fast Fourier transformation (IFFT), digital beamforming and filtering, and other processing functions. A RU communicates with one or more UEs over a wireless link.

[0377] A DU and a RU can or can not be co-located. A DU and a RU exchange control plane information and user plane information over a fronthaul link via a lower-layer split-control, user and synchronization (LLS-CUS) interface. The LLS-CUS can include a LLS-C interface and a LLS-U interface that provide a control plane (C-Plane) and a user plane (U-Plane), respectively. In some examples, the control plane (C-Plane) refers to real-time control between a DU and a RU. A DU and a RU have a LLS-M interface of the fronthaul link to exchange management information, and the management plane (M-Plane) refers to non-real-time management operations between the DU and the RU.

[0378] A DU and a RU can cooperate to collectively implement the functionality of a PHY layer. A DU can be connected to one or more RUs. The functionality that a DU and a RU have can be configured in multiple ways according to design. For example, a DU is configured to implement baseband functionality and a RU is configured to implement mid- radio frequency functionality. As another example, a DU is configured to implement high layer functionality in a PHY layer and a RU is configured to implement low layer functionality in the PHY layer or to implement the low layer functionality and radio frequency functionality. The high layer functionality in the PHY layer can include a portion of the functionality of the PHY layer that is closer to the MAC layer, and the low layer functionality in the PHY layer can include another portion of the functionality of the PHY layer that is closer to the mid-radio frequency side.

[0379] When the communication device is a chip applied to a terminal, the terminal chip implements the functions of the terminal in the method embodiments. The terminal chip receives information from the base station, which can be understood as the information being received by other modules (such as a radio frequency module or an antenna) in the terminal first, and then being sent to the terminal chip by the modules. The terminal chip sends information to the base station, which can be understood as the information being sent to other modules (such as a radio frequency module or an antenna) in the terminal first, and then being sent to the base station by the modules.

[0380] When the communication device is a chip applied to a base station, the base station chip implements the functions of the base station in the method embodiments. The base station chip receives information from the terminal, which can be understood as the information being received by other modules (such as a radio frequency module or an antenna) in the base station first, and then being sent to the base station chip by the modules. The base station chip sends information to the terminal, which can be understood as the information being sent to other modules (such as a radio frequency module or an antenna) in the base station first, and then being sent to the terminal by the modules.

[0381] In this application, entity A sending information to entity B can be A sending directly to B, or A sending indirectly to B through other entities. Similarly, entity B receiving information from entity A can be entity B receiving the information sent by entity A directly, or entity B receiving the information sent by entity A indirectly through other entities. Here, entity A and B can be RAN nodes or terminals, or modules inside RAN nodes or terminals. The sending and receiving of information can be the information interaction between RAN nodes and terminals, for example, the information interaction between a base station and a terminal; the sending and receiving of information can also be the information interaction between two RAN nodes, for example, the information interaction between a CU and a DU; the sending and receiving of information can also be the information interaction between different modules inside one device, for example, the information interaction between a terminal chip and other modules in the terminal, or the information interaction between a base station chip and other modules in the base station.

[0382] It can be understood that the processor in the embodiments of the present application can be a central processing unit (CPU), and can also be other general-purpose processors, digital signal processors (DSPs), application specific integrated circuits (ASICs), field programmable gate arrays (FPGAs) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. The general-purpose processor can be a microprocessor, or any conventional processor.

[0383] The method steps in the embodiments of the present application can be implemented in hardware, or in software executable by a processor. The software instructions can be composed of respective software modules, which can be stored in a random access memory, a flash memory, a read-only memory, a programmable read-only memory, an erasable programmable read-only memory, an electrically erasable programmable read-only memory, a register, a hard disk, a mobile hard disk, a CD-ROM, or any other form of storage medium well known in the art. An exemplary storage medium is coupled to the processor, so that the processor can read information from, and write information to, the storage medium. The storage medium can also be a component of the processor. The processor and the storage medium can be located in an ASIC. In addition, the ASIC can be located in a base station or a terminal. The processor and the storage medium can also exist as discrete components in a base station or a terminal.

[0384] In the above embodiments, all or some of the steps can be implemented by software, hardware, firmware or any combination thereof. When implemented by software, all or some of the steps can be implemented in the form of one or more computer programs or instructions. When loaded onto and executed by a computer, the computer programs or instructions complete the flow or function described in the embodiments of the present application. The computer can be a general purpose computer, a special purpose computer, a computer network, a network device, a user equipment or other programmable apparatus. The computer programs or instructions can be stored in a computer readable storage medium, or transferred from one computer readable storage medium to another computer readable storage medium, for example, the computer programs or instructions can be transferred from one website, computer, server or data center to another website, computer, server or data center through wired or wireless manner. The computer readable storage medium can be any available medium or a data storage device integrated with one or more available media that is accessible by a computer. The available medium can be a magnetic medium, such as a floppy diskette, a hard disk, a magnetic tape; an optical medium, such as a digital video disk; a semiconductor medium, such as a solid state disk. The computer readable storage medium can be a volatile or non-volatile storage medium, or can include both volatile and non-volatile storage media.

Claims

1. A communication method characterized by comprising: The method comprises: determining first information, the first information being used for configuring time domain filtering information of channel state information interference measurement (CSI-IM) resources, the time domain filtering information comprising beam index, quasi co-location information or time domain filtering number information, the time domain filtering information being used for determining interference measurement results; sending the first information.

2. The method of claim 1, wherein, The time domain filtering information is used for determining interference measurement results, comprising: The interference measurement results are determined based on the CSI-IM resources corresponding to the same time domain filtering information after time domain filtering.

3. The method according to claim 1 or 2, characterized in that, The first information comprises one time domain filtering information.

4. The method according to claim 1 or 2, characterized in that, The first information comprises multiple time domain filtering information.

5. The method according to claim 4, characterized in that: The first information further comprises a time domain pattern, the time domain pattern being used for indicating multiple time domain resources of the CSI-IM resources, the multiple time domain resources having a correlation relationship with the multiple time domain filtering information.

6. The method according to claim 4 or 5, characterized in that, The first information further comprises number information and / or subcarrier spacing information of the time domain filtering information, the number information and / or the subcarrier spacing information being used for determining the correlation relationship.

7. The method according to any one of claims 1 to 6, characterized in that, The method further comprises: sending fifth information, the fifth information being used for indicating time domain filtering threshold parameters, the time domain filtering threshold parameters being used for determining interference measurement results.

8. The method of claim 7, wherein, The interference measurement results are determined based on the CSI-IM resources corresponding to the same time domain filtering information and satisfying the time domain filtering threshold parameters after time domain filtering.

9. A communication method characterized by comprising: The method comprises: receiving first information, the first information being used for configuring time domain filtering information of first channel state information interference measurement (CSI-IM) resources, the time domain filtering information comprising beam index, quasi co-location information or time domain filtering number information; performing interference measurement based on the first information.

10. The method of claim 9, wherein, The method comprises: The interference measurement is determined based on the CSI-IM resources corresponding to the same time domain filtering information after time domain filtering.

11. The method according to claim 8 or 9, characterized in that, The first information comprises one time domain filtering information.

12. The method of claim 8 or 9, wherein, The first information comprises multiple time domain filtering information.

13. The method of claim 12, wherein, The first information further comprises a time domain pattern, the time domain pattern being used for indicating multiple time domain resources of the CSI-IM resources, the multiple time domain resources having a correlation relationship with the multiple time domain filtering information.

14. The method according to claim 12 or 13, characterized in that, The first information further comprises number information and / or subcarrier spacing information of the time domain filtering information, the number information and / or the subcarrier spacing information being used for determining the correlation relationship.

15. The method according to any one of claims 9 to 14, characterized in that, The method further comprises: receiving fifth information, the fifth information being used for indicating time domain filtering threshold parameters, the time domain filtering threshold parameters being used for determining interference measurement results.

16. The method of claim 15, wherein, The interference measurement results are determined based on the CSI-IM resources corresponding to the same time domain filtering information and satisfying the time domain filtering threshold parameters after time domain filtering.

17. A communications device, characterized by comprises a processor configured to execute computer program instructions to implement the method according to any one of claims 1 to 8, or configured to execute computer program instructions to implement the method according to any one of claims 9 to 16.

18. The communication apparatus according to claim 17, wherein The communication device further comprises a memory for storing the computer program or instructions.

19. A chip, characterized by comprises a processor configured to perform the method of any one of claims 1 to 16.

20. A computer-readable storage medium, characterized in that, A computer program for storing which, when run on a computer, causes the computer to perform the method of any one of claims 1 to 16.

21. A computer program product, characterised in that, The computer program product comprises one or more computer programs which, when run on a computer, cause the computer to perform the method of any one of claims 1 to 16.

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