Method and apparatus for reporting and receiving channel state information - Patents.com

Abstract

A method and apparatus are provided for reporting and receiving CSI. [Solution] The method includes: a terminal device receiving one or more reference signals to obtain measurement information; obtaining CSI according to the measurement information; and transmitting the CSI at a first time according to a CSI reporting configuration, wherein the CSI indicates a channel condition at least at a second time after the first time.

Description

[Technical field]

[0001] TECHNICAL FIELD Embodiments of the present disclosure relate generally to the field of communications. [Background technology]

[0002] This section introduces aspects that may facilitate a better understanding of the present disclosure. Accordingly, the statements in this section are to be read in this light and are not to be understood as admissions about what is in the prior art or what is not in the prior art.

[0003] As a popular technology in recent years, artificial intelligence (AI) and / or machine learning (ML) are being applied to many application areas such as image processing, video processing, natural language processing, automobile driving, etc. Research and discussion on applying AI / ML to 3GPP standards and mobile systems is also becoming more common.

[0004] In the 3GPP Radio Access Network (RAN) Working Group, there is a study item "Study on improving data collection for NR and ENDC" in RAN3 in Rel-17. In Rel-18, it has been approved as a work item. Also, AI / ML for air interface has been widely discussed among companies. It has been concluded as a study item in Rel-18 led by RAN1. Moreover, AI / ML is expected to have a greater impact in future 6G standards and wireless networks.

[0005] AI / ML-based approaches can be applied to many use cases such as channel state information (CSI) feedback, beam management, positioning, etc. As an alternative to traditional methods, AI / ML can bring significant gains over traditional methods in terms of KPIs such as overhead reduction, performance improvement, and latency reduction.

[0006] For data-driven methods, the AI / ML model is trained offline using data generated from simulations and / or field data. In some use cases, online training may also be supported. In this way, the AI / ML model can be updated with high adaptability to its application scenario.

[0007] Meanwhile, link adaptation techniques are widely used in mobile communication systems such as LTE, LTE-A, and NR, and will also be applied in future 6G systems. To enable the transmission method to be shaped according to the fading channel conditions, the terminal device side may feed back channel state information (CSI) to the network device side.

[0008] The network device then utilizes such information to determine the modulation and coding scheme (MCS), multiple-input multiple-output (MIMO) parameters (e.g., layers), precoding / beamforming, etc. for its downlink transmission. Similarly, link adaptation methods are also utilized in the uplink direction. In addition to feedback-based methods, sounding reference signal (SRS)-based methods using time division duplex (TDD) reciprocity are also popular methods for link adaptation. Summary of the Invention [Problem to be solved by the invention]

[0009] This Summary is provided to introduce a selection of concepts in a simplified form that are further described below in the Detailed Description. This Summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used to limit the scope of the claimed subject matter.

[0010] The inventors have found that one challenge to these closed-loop link adaptation methods is due to the latency between channel measurement and data transmission based on the measurement results. In some application scenarios, such as high mobility scenarios, the channel conditions (e.g., channel coefficients) may have significant changes due to latency. As a result, performance gains from link adaptation are reduced. [Means for solving the problem]

[0011] In order to solve at least some of the above problems, the present disclosure provides a method, an apparatus, a device, and a computer program product. It can be understood that the embodiments of the present disclosure are not limited to wireless systems operating in NR networks, but can be more broadly applied to any application scenario in which similar problems exist.

[0012] Generally, embodiments of the present disclosure provide methods and apparatuses for reporting and receiving CSI, which is expected to obtain accurate CSI for downlink transmissions.

[0013] According to an aspect of an embodiment of the present disclosure, a method for reporting CSI is provided. The method includes:

[0014] receiving, by a terminal device, one or more reference signals to obtain measurement information;

[0015] Obtaining CSI according to the measurement information;

[0016] Transmitting the CSI at a first time in accordance with a CSI reporting configuration, the CSI indicative of channel conditions at least at a second time after the first time.

[0017] According to another aspect of an embodiment of the present disclosure, an apparatus for reporting channel state information (CSI) is provided. The apparatus includes:

[0018] a first receiving unit configured to receive one or more reference signals to obtain measurement information;

[0019] a first processing unit configured to obtain CSI according to the measurement information;

[0020] a first transmitting unit configured to transmit the CSI at a first time in accordance with a CSI reporting configuration, the CSI indicating at least a channel condition at a second time after the first time.

[0021] In another aspect of an embodiment of the present disclosure, a method for receiving channel state information (CSI) is provided, the method comprising:

[0022] transmitting, by the network device, one or more reference signals in accordance with the reference signal resource configuration;

[0023] Receiving CSI at a first time, the CSI indicative of channel conditions at least at a second time that is later than the first time.

[0024] In another aspect of an embodiment of the present invention, an apparatus for receiving channel state information (CSI) is provided, the apparatus comprising:

[0025] a second transmitting unit configured to transmit one or more reference signals according to the reference signal resource configuration;

[0026] and a second receiving unit configured to receive CSI at a first time, the CSI indicative of at least a channel condition at a second time after the first time.

[0027] According to another aspect of an embodiment of the present invention, there is provided a network system comprising:

[0028] a terminal device configured to receive one or more reference signals to obtain measurement information, obtain CSI according to the measurement information, and transmit the CSI at a first time according to a CSI reporting configuration;

[0029] and a network device configured to transmit one or more reference signals in accordance with a reference signal resource configuration and receive the CSI at the first time, the CSI indicating a channel condition at least at a second time after the first time.

[0030] According to various embodiments of the present disclosure, a terminal device receives one or more reference signals to obtain measurement information, obtains CSI according to the measurement information, and transmits the CSI at a first time according to a CSI reporting configuration, where the CSI indicates a channel condition at least at a second time after the first time. Thus, a network device side can use the CSI to obtain CSI corresponding to a channel condition at a time instance of downlink transmission.

[0031] With reference to the following description and drawings, specific embodiments of the present disclosure are disclosed in detail to illustrate the principles and application of the present disclosure. It should be understood that the scope of the embodiments of the present disclosure is not limited thereto. The embodiments of the present disclosure include many changes, modifications, and equivalents within the scope of the terms of the appended claims.

[0032] Features described and / or illustrated with respect to one embodiment may be used in the same or similar manner in one or more other embodiments and / or in combination with or instead of features of the other embodiments.

[0033] It should be emphasized that as used in this specification, the term "having / having / including / including" is to be interpreted as specifying the presence of stated features, integers, steps or components, but does not exclude the presence or addition of one or more other features, integers, steps, components or groups thereof. [Brief description of the drawings]

[0034] Elements and features shown in one drawing or embodiment of the invention may be combined with elements and features shown in one or more additional drawings or embodiments. Further, in the drawings, like reference numerals may be used to indicate corresponding parts throughout the several views and to indicate like or similar parts in two or more embodiments.

[0035] [Figure 1] 1 is a schematic diagram showing a wireless communication network;

[0036] [Diagram 2] 1 is a schematic diagram showing a reference signal and a fading channel.

[0037] [Diagram 3] FIG. 2 is a schematic diagram illustrating a CSI reporting method according to an embodiment of the present disclosure.

[0038] [Figure 4] FIG. 1 is a schematic diagram of an AI / ML module in a terminal device.

[0039] [Diagram 5] FIG. 2 is a schematic diagram showing reference signals and downlink transmissions;

[0040] [Figure 6] FIG. 2 is another schematic diagram showing reference signals and downlink transmissions;

[0041] [Figure 7] FIG. 2 is another schematic diagram showing reference signals and downlink transmissions;

[0042] [Figure 8] FIG. 2 is another schematic diagram illustrating a CSI reporting method according to an embodiment of the present disclosure.

[0043] [Figure 9]FIG. 2 is another schematic diagram illustrating a CSI reporting method according to an embodiment of the present disclosure.

[0044] [Figure 10] FIG. 2 is another schematic diagram illustrating a CSI reporting method according to an embodiment of the present disclosure.

[0045] [Figure 11] FIG. 2 is another schematic diagram illustrating a CSI reporting method according to an embodiment of the present disclosure.

[0046] [Figure 12] FIG. 2 is another schematic diagram illustrating a CSI reporting method according to an embodiment of the present disclosure.

[0047] [Figure 13] FIG. 2 is another schematic diagram illustrating a CSI reporting method according to an embodiment of the present disclosure.

[0048] [Figure 14] FIG. 2 is another schematic diagram illustrating a CSI reporting method according to an embodiment of the present disclosure.

[0049] [Figure 15] FIG. 2 is another schematic diagram illustrating a CSI reporting method according to an embodiment of the present disclosure.

[0050] [Figure 16] FIG. 2 is another schematic diagram illustrating a CSI reporting method according to an embodiment of the present disclosure.

[0051] [Figure 17] FIG. 2 is another schematic diagram illustrating a CSI reporting method according to an embodiment of the present disclosure.

[0052] [Figure 18] FIG. 2 is another schematic diagram illustrating a CSI reporting method according to an embodiment of the present disclosure.

[0053] [Figure 19]1 illustrates a block diagram of an apparatus for reporting CSI according to an embodiment of the present disclosure.

[0054] [Figure 20] 1 illustrates a block diagram of an apparatus for receiving CSI according to an embodiment of the present disclosure.

[0055] [Figure 21] 1 is a schematic diagram of a network device according to an embodiment of the present invention.

[0056] [Figure 22] 1 is a schematic diagram of a terminal device according to an embodiment of the present invention; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0057] These and further aspects and features of the present disclosure will become apparent with reference to the following description and the accompanying drawings. In the description and drawings, certain embodiments of the invention are disclosed in detail as illustrative of some of the ways in which the principles of the invention may be employed, but it is understood that the scope of the invention is not correspondingly limited. Rather, the invention includes all changes, modifications, and equivalents falling within the terms of the appended claims.

[0058] As used herein, the term "wireless communication network" refers to a network conforming to any suitable communication standard, such as LTE-Advanced (LTE-A), LTE, Wideband Code Division Multiple Access (WCDMA), High Speed ​​Packet Access (HSPA), etc. Further, communications between terminal devices and network devices in a wireless communication network may be performed according to any suitable generation of communications protocols, including, but not limited to, Global System for Mobile Communications (GSM), Universal Mobile Telecommunications System (UMTS), Long Term Evolution (LTE), and / or other suitable, and / or other suitable first generation (1G), second generation (2G), 2.5G, 2.75G, third generation (3G), fourth generation (4G), 4.5G, future fifth generation (5G) communications protocols, future sixth generation (6G) communications protocols, wireless local area network (WLAN) standards such as the IEEE 802.11 standard, and / or any other suitable wireless communication standards, for example Worldwide Interoperability for Microwave Access (WiMAX), Bluetooth, and / or ZigBee standards, and / or any other protocols now known or developed in the future.

[0059] The term "network device" refers to a device in a wireless communication network through which a terminal device accesses the network and receives services therefrom. A network device refers to a base station (BS), an access point (AP), or any other suitable device in a wireless communication network. A BS can be, for example, a Node B (NodeB or NB), an evolved Node B (eNodeB or eNB), or a gNB, a CU, a DU, a RU, a remote radio unit (RRU), a radio header (RH), a remote radio head (RRH), a low power node such as a relay, femto, pico, etc. Further examples of network devices can include multi-standard radio (MSR) radio equipment such as an MSR BS, a network controller such as a radio network controller (RNC) or a base station controller (BSC), a base transceiver station (BTS), a transmission point, a transmission node, a central signal processing pool or a central computing pool of one or several base stations. However, more generally, a network device is configured to enable and / or provide a terminal device access to a wireless communication network, or to be capable of providing some service to a terminal device that has accessed the wireless communication network. It may represent any suitable device (or group of devices) arranged to and / or operable to:

[0060] The term "terminal equipment" refers to any end device capable of accessing and receiving services from a wireless communication network. By way of example and not limitation, a terminal device may refer to a mobile terminal, a user equipment (UE), or other suitable device. A UE may be, for example, a subscriber station (SS), a portable subscriber station, a mobile station (MS), or an access terminal (AT). A terminal device may include, but is not limited to, a portable computer, an image capture terminal device such as a digital camera, a gaming terminal device, a music storage and playback device, a mobile phone, a cellular phone, a smartphone, a voice over IP (VoIP) phone, a wireless local loop phone, a tablet, a wearable device, a personal digital assistant (PDA), a portable computer, a desktop computer, an image capture terminal device such as a digital camera, a gaming terminal device, a music storage and playback device, a wearable terminal device, a vehicle mounted wireless terminal device, a wireless endpoint, a mobile station, a laptop embedded equipment (LEE), a laptop mounted equipment (LME), a USB dongle, a smart device, a wireless customer premises equipment (CPE), and the like. In the following description, the terms "terminal device," "terminal," "user equipment," and "UE" may be used interchangeably.

[0061] As an example, a terminal device may represent a UE configured to communicate according to one or more communications standards promulgated by the Third Generation Partnership Project (3GPP®), such as 3GPP®'s GSM, UMTS, LTE, and / or 5G and / or 6G standards. As used herein, "user equipment" or "UE" may not necessarily have a "user" in the sense of a human user who owns and / or operates the associated device. In some embodiments, a terminal device may be configured to transmit and / or receive information without direct human interaction. For example, a terminal device may be designed to transmit information to a network on a predetermined schedule, when triggered by an internal or external event, or in response to a request from a wireless communication network. Instead, a UE may represent a device that is intended for sale to or operation by a human user, but may not initially be associated with a particular human user.

[0062] The terminal device may support device-to-device (D2D) communication or V2X communication, for example by implementing the 3GPP standard for sidelink communication, and in this case may be referred to as a D2D communication device or a V2X communication device.

[0063] As yet another example, in an Internet of Things (IOT) scenario, a terminal device may represent a machine or other device that performs monitoring and / or measurements and transmits results of such monitoring and / or measurements to another terminal device and / or network equipment. The terminal device may in this case be a Machine-to-Machine (M2M) device, which in the 3GPP® context may be referred to as a Machine-Type Communication (MTC) device. As one particular example, the terminal device may be a UE that implements the 3GPP® Narrowband Internet of Things (NB-IoT) standard. Particular examples of such machines or devices are sensors, metering devices such as power meters, industrial machines, or household or personal appliances, e.g., personal wearables such as refrigerators, televisions, clocks, etc. In other scenarios, the terminal device may represent a vehicle or other equipment that can monitor and / or report its operating status or other functions associated with its operation.

[0064] As used herein, downlink (DL) transmission refers to a transmission from a network device to a terminal device, and uplink (UL) transmission refers to a transmission in the opposite direction.

[0065] References herein to "one embodiment," "an embodiment," "exemplary embodiment," and the like indicate that the embodiment being described may include a particular feature, structure, or characteristic, but not all embodiments need to include that particular feature, structure, or characteristic. Moreover, such phrases do not necessarily refer to the same embodiment. Moreover, when a particular feature, structure, or characteristic is described in connection with one embodiment, it is believed to be within the knowledge of one of ordinary skill in the art to implement such feature, structure, or characteristic in connection with other embodiments, whether or not explicitly described.

[0066] As used herein, terms such as "first", "second", and the like may be used to describe various elements, but it should be understood that these elements should not be limited by these terms. These terms are used only to distinguish one element from another. For example, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element, without departing from the scope of the exemplary embodiments. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed terms.

[0067] The terms used herein are for the purpose of describing particular embodiments only and are not intended to limit the exemplary embodiments. As used herein, the singular forms "a," "an," and "the" are intended to include the plural unless the context clearly indicates otherwise. Furthermore, it will be understood that the terms "have," "has," "has," "having," "including," and / or "comprising," as used herein, specify the presence of stated features, elements, and / or components, etc., but do not exclude the presence or addition of one or more other features, elements, components, and / or combinations thereof.

[0068] In the following description and claims, unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs.

[0069] Several exemplary embodiments of the present disclosure will now be described below with reference to the drawings.

[0070] Reference is first made to Figure 1. Figure 1 illustrates a schematic diagram of a wireless communication network 100 in which embodiments of the present disclosure may be implemented. As shown in Figure 1, the wireless communication network 100 may include one or more network devices, such as network device 101.

[0071] It will be appreciated that the network device 101 may be in the form of a gNB, CU (centralized unit), DU (distributed unit), RU (radio unit), IAB donor, IAB node, relay, repeater, network controlled repeater, Node B, eNB, BTS (base transceiver station) and / or BSS (base station subsystem), access point (AP), etc. The network device 101 may provide wireless connectivity to a set of terminal devices or UEs 102-1, 102-2, ..., 102-N (collectively referred to as "terminal equipment 102") within its coverage, where N is a natural number.

[0072] Network device 101 includes processing circuitry, device readable media, interfaces, user interface equipment, auxiliary equipment, power sources, power supply circuitry, and antennas. These components are shown as a single box located within a single larger box, and in some cases, contain additional boxes therein.

[0073] However, in reality, network device 101 may include multiple different physical components that make up a single illustrated component (e.g., an interface includes ports / terminals for coupling wires for a wired connection and radio front-end circuitry for a wireless connection). As another example, network device 101 may be a virtual network node. Similarly, a network node may be composed of multiple physically separate components (e.g., a NodeB component and an RNC component, a BTS component and a BSC component, etc.), each of which may have their own respective components.

[0074] In certain scenarios where the network device 101 includes multiple separate components (e.g., BTS and BSC components), one or more of the separate components may be shared among several network nodes. For example, a single RNC may control multiple Node Bs. In such scenarios, each unique Node B and RNC pair may be considered as a single separate network node in some instances. In some embodiments, the network node may be configured to support multiple radio access technologies (RATs). In such embodiments, some components may be duplicated (e.g., separate device-readable media for different RATs) and some components may be reused (e.g., the same antenna may be shared by those RATs).

[0075] Although the network device 101 shown in the exemplary wireless communication network may represent a device including a particular combination of hardware components, other embodiments may include network nodes having different combinations of components. It should be understood that a network device may include any suitable combination of hardware and / or software required to perform the tasks, features, functions, and methods disclosed herein.

[0076] It should be understood that the configuration of Figure 1 is described for illustrative purposes only, without implying any limitation as to the scope of the present disclosure. Those skilled in the art will appreciate that the wireless communication network 100 may include any suitable number of terminal devices and / or network devices and may have other suitable configurations.

[0077] The wireless channel in the Radio Access Network (RAN) follows the principles of electromagnetic wave propagation. However, in wideband systems using massive MIMO antenna technology, it is nearly impossible to derive an analytical closed-form solution for the wireless channel link between the network device and the terminal equipment. The method to estimate the channel coefficient is to use a Reference Signal (RS) to estimate the channel coefficients in its vicinity.

[0078] Also, the type of measurements for the channel state information is controlled by the network device, and the CSI is fed back from the terminal equipment over the air interface. The CSI includes channel quality indicator (CQI), precoding matrix indicator (PMI), CSI-RS resource indicator (CRI), SS / PBCH block resource indicator (SSBRI), layer indicator (LI), rank indicator (RI), L1-RSRP, L1-SINR, etc. In the network device, these CSI are used to instantly adapt the MCS, precoding matrix, and beam to the fading channel to optimize the downlink transmission.

[0079] Figure 2 is a schematic diagram showing a reference signal and a fading channel. As shown in Figure 2, a terminal device receives RS1 and RS2, and then derives CSI from RS1 and RS2 according to CSI measurement. The CSI is reported to a network device at time instance n, and downlink transmission using the feedback CSI is performed at time instance n+d.

[0080] However, channel conditions may change significantly during this period due to latency (also called CSI delay), as shown in Figure 2. Pre-processing (e.g., pre-coding) of downlink transmissions based on these outdated CSI may not provide the expected performance gains for closed-loop over-the-air optimization.

[0081] First aspect of the embodiment In this disclosure, a CSI reporting method is provided.

[0082] FIG. 3 is a schematic diagram illustrating a method for reporting CSI according to an embodiment of the present disclosure, taking a terminal device-side method as an example.

[0083] As shown in FIG. 3, the method includes:

[0084] 301: A terminal device receives one or more reference signals to obtain measurement information.

[0085] 302: The terminal device obtains CSI according to the measurement information.

[0086] 303: The terminal device transmits CSI at a first time according to a CSI reporting configuration, where the CSI indicates a channel condition at least at a second time after the first time.

[0087] It should be understood that Fig. 3 is merely an example of the present disclosure, and the present disclosure is not limited thereto. For example, the order of operations or steps may be adjusted and / or some operations or steps may be omitted. Furthermore, some operations or steps not shown in Fig. 3 may be added.

[0088] For example, the first time may be a time instance when CSI is transmitted by a terminal device, and the second time may be a time instance when a downlink transmission using the CSI (e.g., precoding, modulation and coding scheme) is transmitted by a network device, but is not limited to this.

[0089] Thus, the terminal device receives one or more reference signals to obtain measurement information; obtains CSI according to the measurement information; and transmits CSI at a first time according to a CSI reporting configuration, where the CSI indicates a channel condition at least at a second time after the first time. Thus, the network device side can use the CSI to obtain CSI that corresponds to a channel condition at a time instance of downlink transmission.

[0090] In some embodiments, CSI prediction is a method to mitigate performance degradation from CSI feedback delay. It is well known that time series prediction is a typical application field of AI / ML. Neural networks such as RNN, LSTM, and Transformer have performance gains over traditional methods.

[0091] In some embodiments, CSI prediction is achieved by a direct CSI measurement function using knowledge of the CSI delay. AI / ML may be used to generate accurate measurement or prediction results.

[0092] In some embodiments, the terminal device receives a CSI reporting configuration and / or a reference signal resource configuration from a network device. The network device then transmits one or more reference signals according to the reference signal resource configuration. The terminal device receives the one or more reference signals and performs CSI measurement to obtain measurement information. For details, please refer to the related art.

[0093] In some embodiments, the terminal device obtains channel state information according to the measurement information, for example, the terminal device obtains CSI using an AI / ML module.

[0094] Figure 4 is a schematic diagram of an AI / ML module in a terminal device. As shown in Figure 4, some parameters, such as channel coefficients h1, h2, report timing n, prediction step d, and previous prediction result Y(n-1), are input into the AI / ML module, and the AI / ML module generates a CSI prediction result Y(n+d).

[0095] Y(n+d) is transmitted by the terminal device as a CSI report at time n, i.e., the CSI report indicates channel conditions at least at a second time (n+d) that is later than the first time (n).

[0096] It should be understood that the illustration in Fig. 4 is merely an example, and the present disclosure is also suitable for other types of neural networks with different input information that can achieve the purpose of CSI prediction. For details of neural networks, such as their structure and parameters, please refer to the related art.

[0097] Next, some content regarding Reference Signals (RS) is provided for reference.

[0098] In NR, an RS report (e.g., a CSI report) is configured with RS resources for measurement. The report type can be either a periodic report, a semi-persistent report, or an aperiodic report. Different report types are configured with different RS types, such as periodic RS, semi-persistent RS, and aperiodic RS.

[0099] Table 1 provides an example of a CSI reporting configuration and a CSI-RS resource configuration. [Table 1]

[0100] FIG. 5 is a schematic diagram showing reference signals and downlink transmission. As shown in FIG. 5, for example, for periodic CSI reporting, a CSI report at time instance n is derived by RS1 and RS2. When reporting at time instance n, the estimated CSI is delayed by at least d1+d2, where d1 is the CSI processing delay at the terminal device (from the time instance of the last RS to n), and d2 is the time interval from the reporting timing of n to the downlink transmission with CSI feedback.

[0101] In some embodiments, in the training phase of the AI / ML module, the time interval between two RSs (such as the interval between RS1 and RS2) and the prediction step (d1+d2, or simply d2) are input to the AI / ML module. The module is optimized by learning the channel knowledge and relationships at these time instances before and after time instance n. The channel variation speed in the time domain has a large impact on the CSI prediction, which is mainly related to the mobile speed of the terminal equipment relative to its serving base station. A fast-varying channel requires a shorter RS ​​interval than a slow-varying channel. Also, the prediction step is closely related to the number of RSs and the duration of all RSs for the prediction process.

[0102] After the training phase, for a given prediction step, the AI / ML module has its preferred RS interval (or periodicity) and / or number of RSs for channel change conditions. Such kind of relationship also holds true for semi-persistent CSI-RS.

[0103] 6 is another schematic diagram illustrating reference signals and downlink transmission. As shown in FIG. 6, for example, for aperiodic CSI reporting, multiple aperiodic CSI RSs are configured and activated to realize CSI prediction.

[0104] Figure 7 is another schematic diagram showing reference signals and downlink transmission. As shown in Figure 7, for example, when aperiodic CSI-RS is configured, CSI prediction is difficult to perform without additional information. If the terminal device has the ability to detect the moving direction to its serving BS, a scenario using one RS is possible.

[0105] For example, if the terminal device is moving towards its serving BS, the CQI increases, and if it is moving away from its serving BS, the CQI decreases. Nonetheless, multiple aperiodic RS resources are preferable when they can be configured.

[0106] FIG. 8 is another schematic diagram illustrating a CSI reporting method according to an embodiment of the present disclosure.

[0107] As shown in FIG. 8, the method includes:

[0108] 801: A terminal device receives a first prediction instruction from a network device, where the first prediction instruction is used to instruct the terminal device to predict CSI at a second time.

[0109] 802: A terminal device receives one or more reference signals to obtain measurement information.

[0110] 803: The terminal device obtains channel state information according to the measurement information.

[0111] 804: The terminal device transmits CSI at a first time according to a CSI reporting configuration, where the CSI indicates a channel condition at least at a second time after the first time.

[0112] It should be understood that Fig. 8 is merely an example of the present disclosure, and the present disclosure is not limited thereto. For example, the order of operations or steps may be adjusted and / or some operations or steps may be omitted. Furthermore, some operations or steps not shown in Fig. 8 may be added.

[0113] FIG. 9 is another schematic diagram illustrating a CSI reporting method according to an embodiment of the present disclosure.

[0114] As shown in FIG. 9, the method includes:

[0115] 901: A terminal device receives a first prediction instruction from a network device, where the first prediction instruction is used to instruct the terminal device to predict CSI at a second time.

[0116] As shown in FIG. 9, the terminal device may receive from the network device first prediction accuracy information for indicating one or more prediction accuracy requirements. For example, the first prediction indication and / or the first prediction accuracy information may be transmitted via at least one of a radio resource control (RRC), a medium access control (MAC) control element (CE), or a downlink control information (DCI). However, without being limited thereto, the information may be conveyed, for example, via a physical downlink shared channel (PDSCH).

[0117] As shown in Figure 9, the terminal device may receive from the network device first prediction step information indicating a time interval between a first time and a second time. For example, the first prediction step information is transmitted via at least one of a radio resource control (RRC), a medium access control (MAC) control element (CE), or a downlink control information (DCI). However, without being limited thereto, for example, the information may be conveyed via a physical downlink shared channel (PDSCH).

[0118] It should be understood that the first prediction accuracy information and / or the first prediction step information may be transmitted together with the first prediction instruction, but is not limited thereto. For example, the first prediction accuracy information and / or the first prediction step information may be transmitted by separate messages, respectively.

[0119] 902, a terminal device receives one or more reference signals to obtain measurement information.

[0120] 903: The terminal device obtains CSI according to the measurement information.

[0121] 904: The terminal device transmits CSI at a first time according to a CSI reporting configuration, where the CSI indicates a channel condition at least at a second time after the first time.

[0122] It should be understood that Fig. 9 is merely an example of the present disclosure, and the present disclosure is not limited thereto. For example, the order of operations or steps may be adjusted and / or some operations or steps may be omitted. Furthermore, some operations or steps not shown in Fig. 9 may be added.

[0123] In some embodiments, the first prediction step information is scaled based on the subcarrier spacing (SCS). From the perspective of processing time, the prediction step is closely related to the processing delay at the terminal equipment side and the network device side.

[0124] On the other hand, the prediction step supported by the AI / ML module also depends on the coherence time of the wireless channel, which can be expressed as Ct=1 / fd, where fd is the Doppler shift.

[0125] The prediction step d is linearly related to the coherence time, d = aCt. For example, if d is estimated to be 1 ms, then d is scaled in the SCS as shown in this Table 2. Other d values ​​can be derived accordingly. [Table 2]

[0126] The terminal equipment may exchange its prediction capabilities with the network device, and better performance can be achieved if the CSI delays on the terminal equipment side and on the network device side can be matched to the prediction steps of the UE capabilities (e.g., via AI / ML modules).

[0127] In some embodiments, the terminal device sends a request to the network device indicating at least one of a reference signal period, a reference signal interval, a reference signal number, and a mobility indication.

[0128] The reference signal periodicity or mobility indication is used by the network device to determine a periodic or semi-persistent configuration of one or more reference signals, and the reference signal interval or reference signal number or mobility indication is used by the network device to determine the number and / or location of non-periodic reference signals.

[0129] FIG. 10 is another schematic diagram illustrating a CSI reporting method according to an embodiment of the present disclosure.

[0130] As shown in FIG. 10, the method includes:

[0131] 1001: A terminal device transmits a request indicating a reference signal period.

[0132] For example, the terminal device selects a preferred RS period for its AI / ML module for CSI prediction. The terminal device transmits an RS period request to the network device side accordingly. The preferred RS period may be derived according to an estimated channel change rate. Also, the preferred RS period may be related to the prediction step and input / output signal features of the AI / ML module in the training phase.

[0133] For example, the terminal equipment may transmit its mobility indication based on estimated channel change rate or estimated Doppler shift information directly to the network device, which derives the reference signal period accordingly. The mobility indication may be indicated via a number of bits for a relative level or an absolute channel change metric.

[0134] 1002: A terminal device receives a CSI reporting configuration and / or a reference signal resource configuration.

[0135] For example, the terminal device may already be configured with one or more CSI reporting configurations and one or more CSI-RS resource configurations. If multiple periodic or semi-persistent CSI-RS resources are configured, the terminal device may send a preferred RS periodicity request to the network device side in 1001. In 1002, after the RS periodicity request, the CSI reporting configuration and / or the RS resource setting may also be sent to the terminal device side.

[0136] 1003: A terminal device receives one or more reference signals to obtain measurement information.

[0137] 1004: The terminal device obtains CSI according to the measurement information.

[0138] For example, a CSI-RS based on an RS periodicity request may be sent from the network device side. The terminal device side may select one or more measurement results as input to the AI / ML module. The AI / ML module generates a predicted CSI for time n+d.

[0139] 1005: The terminal device transmits CSI at a first time according to a CSI reporting configuration, where the CSI indicates a channel condition at least at a second time after the first time.

[0140] It should be understood that Fig. 10 is merely an example of the present disclosure, and the present disclosure is not limited thereto. For example, the order of operations or steps may be adjusted and / or some operations or steps may be omitted. Furthermore, some operations or steps not shown in Fig. 10 may be added.

[0141] FIG. 11 is another schematic diagram illustrating a CSI reporting method according to an embodiment of the present disclosure.

[0142] As shown in FIG. 11, the method includes:

[0143] 1101: A terminal device transmits a request indicating a reference signal interval and / or a number of reference signals.

[0144] For example, for the procedure of configuration and activation of aperiodic CSI reporting or semi-persistent CSI reporting, the terminal device may send an RS interval request to the network device side, requesting the network device to configure / schedule one or more aperiodic RSs at a preferred RS interval. Alternatively, the number of RSs may also be sent to the network device side. The CSI-RS pattern may be realized by semi-persistent CSI-RS, with activation / deactivation to control the periodicity of the RS interval and the number of RSs.

[0145] For example, the terminal device may directly transmit its mobility indication based on the estimated channel change rate or the estimated Doppler shift information to the network device, which derives the RS interval and / or the number of RSs for the aperiodic CSI reporting configuration and its CSI resource configuration.

[0146] 1102: A terminal device receives one or more reference signals to obtain measurement information.

[0147] 1103, the terminal device obtains CSI according to the measurement information.

[0148] For example, the network device may transmit a CSI-RS based on an RS interval request and / or an RS number request. The terminal device may select one or more measurement results as input to the AI / ML module. The AI / ML module generates a predicted CSI for time n+d.

[0149] 1104: The terminal device transmits CSI at a first time according to a CSI reporting configuration, where the CSI indicates a channel condition at least at a second time after the first time.

[0150] It should be understood that Fig. 11 is merely an example of the present disclosure, and the present disclosure is not limited thereto. For example, the order of operations or steps may be adjusted and / or some operations or steps may be omitted. Furthermore, some operations or steps not shown in Fig. 11 may be added.

[0151] In some embodiments, the terminal device determines that CSI prediction is not supported.

[0152] FIG. 12 is another schematic diagram illustrating a CSI reporting method according to an embodiment of the present disclosure.

[0153] As shown in FIG. 12, the method includes:

[0154] 1201: A terminal device receives a first prediction instruction from a network device, where the first prediction instruction is used to instruct the terminal device to predict channel state information at a second time.

[0155] As shown in Fig. 12, the terminal device may receive the first prediction accuracy information and / or the first prediction step information from the network device. It should be understood that the first prediction accuracy information and / or the first prediction step information may be transmitted together with the first prediction instruction, which is not limited. For example, the first prediction accuracy information and / or the first prediction step information may be transmitted in separate messages.

[0156] 1202: The terminal device determines that CSI prediction is not supported.

[0157] 1203: The terminal device transmits a predicted stop request.

[0158] 1204: The terminal device receives a predicted stop response.

[0159] It should be understood that Fig. 12 is merely an example of the present disclosure, and the present disclosure is not limited thereto. For example, the order of operations or steps may be adjusted and / or some operations or steps may be omitted. Furthermore, some operations or steps not shown in Fig. 12 may be added.

[0160] For example, upon receiving a prediction instruction (possibly including a prediction step and / or a prediction accuracy), the terminal equipment may determine that its prediction performance is not sufficient, and the terminal equipment may send a prediction stop request to the network device, which then sends a prediction stop response.

[0161] For example, the reason why the terminal equipment decides to stop prediction may be one or more of the following problems: the channel changes too fast and the prediction cannot have an accurate estimate for a given prediction step; the channel changes too fast and the prediction cannot have an accurate estimate for a given prediction step and configured RS period; the given prediction step and configured RS period cannot match the channel change; the prediction accuracy cannot be met.

[0162] In some embodiments, the network device determines that CSI prediction is not supported.

[0163] FIG. 13 is another schematic diagram illustrating a CSI reporting method according to an embodiment of the present disclosure.

[0164] As shown in FIG. 13, the method includes:

[0165] 1301: A terminal device receives a first prediction instruction from a network device, where the first prediction instruction is used to instruct the terminal device to predict CSI at a second time.

[0166] As shown in Fig. 13, the terminal device may receive the first prediction accuracy information and / or the first prediction step information from the network device. It should be understood that the first prediction accuracy information and / or the first prediction step information may be transmitted together with the first prediction instruction, which is not limited. For example, the first prediction accuracy information and / or the first prediction step information may be transmitted by separate messages, respectively.

[0167] 1302: The terminal device sends a request indicating at least one of a reference signal period, a reference signal interval, a reference signal number, and a mobility indication.

[0168] 1303: The network device determines that CSI prediction is not supported.

[0169] 1304: The network device sends a predicted stop indication.

[0170] It should be understood that Fig. 13 is merely an example of the present disclosure, and the present disclosure is not limited thereto. For example, the order of operations or steps may be adjusted and / or some operations or steps may be omitted. Furthermore, some operations or steps not shown in Fig. 13 may be added.

[0171] For example, when receiving an RS interval request from a terminal device, the network device may not be able to schedule and transmit an RS according to the RS interval request, so the network device sends a prediction stop instruction to the terminal device, and the terminal device does not perform CSI prediction after receiving the stop instruction.

[0172] In addition to this example, after the network device instructs the terminal equipment to perform CSI prediction, the network device may directly instruct the terminal equipment to stop CSI prediction if it determines that it is necessary.

[0173] FIG. 14 is another schematic diagram illustrating a CSI reporting method according to an embodiment of the present disclosure.

[0174] As shown in FIG. 14, the method includes:

[0175] 1401: A terminal device receives a request to obtain CSI prediction capability from a network device.

[0176] At 1402, the terminal device reports capability information regarding CSI prediction capability to the network device.

[0177] For example, the network device initiates a CSI prediction capability inquiry to the terminal equipment, and the terminal equipment reports whether it supports prediction or not. The terminal equipment may also report RS periodicity or RS interval, number of RS, RS duration information for potential prediction operation. The relationship between the prediction step and the associated RS interval may be predefined or may be exchanged between the terminal equipment and the network device in this capability inquiry / response procedure.

[0178] 1403: The network device configures one or more CSI reporting settings and one or more RS resource configurations for potential predicted operation.

[0179] 1404: The terminal device sends a request indicating a CSI reporting configuration ID and / or an RS resource configuration ID and / or a reference signal interval.

[0180] For example, based on the capability information, the network device configures one or more CSI reporting settings with possible RS resource configurations (including different RS periodicities or RS intervals) on the terminal device side. The terminal device can send an RS interval request or a CSI report ID or an RS resource configuration ID suitable for a given prediction step according to its capability (e.g., AI / ML).

[0181] 1405: The terminal device receives one or more reference signals to obtain measurement information.

[0182] 1406: The terminal device obtains CSI according to the measurement information.

[0183] 1407: The terminal device transmits CSI at a first time according to a CSI reporting configuration, where the CSI indicates a channel condition at least at a second time after the first time.

[0184] It should be understood that Fig. 14 is merely an example of the present disclosure, and the present disclosure is not limited thereto. For example, the order of operations or steps may be adjusted and / or some operations or steps may be omitted. Furthermore, some operations or steps not shown in Fig. 14 may be added.

[0185] In some embodiments, the prediction is initiated by the terminal device.

[0186] FIG. 15 is another schematic diagram illustrating a CSI reporting method according to an embodiment of the present disclosure.

[0187] As shown in FIG. 15, the method includes:

[0188] 1501: A terminal device sends a second prediction indication or a prediction request to a network device, where the second prediction indication is used to indicate that the terminal device predicts channel state information at a second time.

[0189] As shown in Fig. 15, the terminal device may transmit at least one of the second prediction accuracy information, the second prediction step information, the reference signal configuration ID, the reference signal interval, or the reference signal number, or the mobility indication, or the prediction request to the network device. It should be understood that the information may be transmitted together with the second prediction indication, and is not limited thereto. For example, the information may be transmitted by separate messages.

[0190] For example, the terminal device detects that its channel change rate is very fast and needs to perform CSI prediction, and then sends a prediction request or instruction to the network device. Alternatively, the terminal device can send a mobility instruction, which has a similar function of the CSI prediction instruction, to the network device.

[0191] 1502: A terminal device receives one or more reference signals to obtain measurement information.

[0192] For example, the reference signal resource configuration is determined by the network device according to at least one of the second prediction accuracy information, the second prediction step information, the reference signal configuration ID, the reference signal interval, the number of reference signals, or the mobility indication.

[0193] 1503: The terminal device obtains CSI according to the measurement information.

[0194] 1504: The terminal device transmits CSI at a first time according to a CSI reporting configuration, where the CSI indicates a channel condition at least at a second time after the first time.

[0195] It should be understood that Fig. 15 is merely an example of the present disclosure, and the present disclosure is not limited thereto. For example, the order of operations or steps may be adjusted and / or some operations or steps may be omitted. Furthermore, some operations or steps not shown in Fig. 15 may be added.

[0196] The above embodiments are illustrated by using prediction information, but are not limited thereto. For example, reliability information and / or delay information may be used in the present disclosure.

[0197] FIG. 16 is another schematic diagram illustrating a CSI reporting method according to an embodiment of the present disclosure.

[0198] As shown in FIG. 16, the method includes:

[0199] 1601: A terminal device receives a request to obtain a CSI reporting capability with a reliability level indicator from a network device.

[0200] For example, the CQI table index in the CSI report or CSI report configuration may indicate whether high reliability is required, such as an indication of QoS, where the CQI table may be either "Table 1," "Table 2," or "Table 3" according to 3GPP TS 38.214 V16.7.0. It should be understood that these three CQI tables are merely examples of the present disclosure, and the present disclosure is not limited thereto.

[0201] 1602: The terminal device reports capability information regarding a CSI reporting capability with a reliability level indicator to the network device. In this example, the prediction step for the QoS indication and the corresponding RS interval (range) are predetermined and thus can be known in both the network device and the terminal device.

[0202] 1603: The terminal device receives a CSI reporting configuration and / or a reference signal resource configuration from the network device, where the CSI reporting configuration includes CSI delay information.

[0203] 1604: The terminal device receives one or more reference signals to obtain measurement information.

[0204] 1605: The terminal equipment acquires CSI according to the measurement information according to the CSI reporting configuration and / or activation.

[0205] 1606: The terminal device transmits CSI at a first time according to the CSI reporting configuration, where the CSI indicates a channel condition at least at a second time after the first time.

[0206] It should be understood that Fig. 16 is merely an example of the present disclosure, and the present disclosure is not limited thereto. For example, the order of operations or steps may be adjusted and / or some operations or steps may be omitted. Furthermore, some operations or steps not shown in Fig. 16 may be added.

[0207] FIG. 17 is another schematic diagram illustrating a CSI reporting method according to an embodiment of the present disclosure.

[0208] As shown in FIG. 17, the method includes:

[0209] 1701: The terminal device receives a CSI reporting capability inquiry from a network device.

[0210] 1702: The terminal equipment reports a CSI capability response to the network device.

[0211] 1703: The terminal equipment and the network device exchange an RS period, a CSI delay, or a prediction accuracy.

[0212] 1704: The terminal device receives one or more CSI reporting configurations and / or one or more reference signal resource configurations from the network device.

[0213] 1705: The network device activates to directly trigger periodic CSI reporting through the CSI reporting configuration, and / or to trigger semi-persistent CSI reporting through the MAC CE or DCI, and / or to trigger aperiodic CSI reporting through the DCI. These activated CSI reports may include a QoS indication (reliability level indicator) for high reliability.

[0214] 1706: The terminal device receives one or more reference signals and obtains measurement information accordingly.

[0215] 1707: The terminal device obtains channel state information according to the measurement information.

[0216] 1708: The terminal device transmits CSI at a first time according to the CSI reporting configuration, where the CSI indicates a channel condition at least at a second time after the first time.

[0217] It should be understood that Fig. 17 is merely an example of the present disclosure, and the present disclosure is not limited thereto. For example, the order of operations or steps may be adjusted and / or some operations or steps may be omitted. Furthermore, some operations or steps not shown in Fig. 17 may be added.

[0218] For example, high reliability is a key requirement for some applications, which are very sensitive to performance degradation caused by CSI delays, and such kind of performance loss should also be avoided to guarantee the reliability requirement.

[0219] As shown in Figure 17, CSI delay or prediction step is exchanged between the network device and the terminal equipment; CSI prediction capability or high reliability endurance is exchanged between the network device and the terminal equipment. Thus, the network device has some knowledge about the RS periodicity required for high reliability, or it is still based on the terminal equipment's requirements. The network device activates or schedules CSI reporting with QoS requirements such as reliability indicators, and the terminal equipment obtains the CSI and reports it to the network device.

[0220] In this procedure, the terminal equipment knows the potential CSI delay, which is the delay from the time instance of CSI reporting to the downlink data transmission that uses this CSI. The processing delay for computing the CSI at the terminal equipment side is handled by the terminal equipment itself. The network device can initiate a CSI prediction capability or reliable query to the terminal equipment. The terminal equipment feeds back its capabilities accordingly.

[0221] During the inquiry procedure, the network device obtains information of the terminal equipment's CSI prediction capability or high reliability sustainment capability, and the terminal equipment obtains information of the CSI delay; the network device may obtain the RS periodicity (or RS spacing) required for high reliability.

[0222] The above information exchange is also performed prior to reliable traffic via a request and response procedure: the network device sends a CSI reporting configuration or activation (via MAC CE or DCI) to the terminal equipment, requesting the terminal equipment to perform the relevant CSI reporting (periodic, semi-persistent, aperiodic), together with a QoS indication indicating its reliability requirements.

[0223] Upon receiving the information, the terminal device obtains the CSI by considering the CSI delay and the QoS requirement (e.g., a reliability level instruction or indicator). The terminal device reports the CSI at a scheduled reporting timing. Thus, the default behavior of the terminal device is to guarantee the QoS (e.g., high reliability) of the next downlink transmission, and the CSI prediction becomes an implementation or capability dependent behavior of the UE.

[0224] In the CSI acquisition process, the terminal device may use its AI / ML module to perform CSI measurement and prediction based on the QoS level requirement (e.g., reliability level), CSI delay or prediction step, RS interval and number of RSs.

[0225] An example of a reliability level or indication is to refer to a CQI table index in a CSI report or CSI report configuration. The CQI table can be either "Table 1", "Table 2" or "Table 3" according to 3GPP TS 38.214 V16.7.0. It should be understood that these three CQI tables are merely examples of the present disclosure and the present disclosure is not limited thereto.

[0226] In the procedure of terminal capability inquiry, the AI / ML for CSI measurement may be inquired and reported. In the CSI reporting configuration of 1704, information that the AI / ML module is enabled may be included in the configuration. Through a specific configuration in which CSI measurement via AI / ML is enabled, the terminal device uses its AI / ML to process CSI measurements and / or perform CSI prediction according to its decision.

[0227] FIG. 18 is another schematic diagram illustrating a CSI reporting method according to an embodiment of the present disclosure.

[0228] As shown in FIG. 18, the method includes:

[0229] 1801: A terminal device receives CSI delay information from a network device, where the CSI delay information is used to instruct the terminal device to acquire CSI at a second time.

[0230] 1802: A terminal device receives one or more reference signals to obtain measurement information.

[0231] 1803: The terminal device obtains CSI according to the measurement information.

[0232] 1804: The terminal device transmits CSI at a first time according to a CSI reporting configuration, where the CSI indicates a channel condition at least at a second time after the first time.

[0233] It should be understood that Fig. 18 is merely an example of the present disclosure, and the present disclosure is not limited thereto. For example, the order of operations or steps may be adjusted and / or some operations or steps may be omitted. Furthermore, some operations or steps not shown in Fig. 18 may be added.

[0234] For example, the terminal device always performs CSI reporting with its prediction capability for a given CSI delay information. The network device provides the CSI delay information in the CSI reporting configuration or in another manner. In the CSI reporting capability inquiry and response procedure, the terminal device reports its CSI reporting with the prediction result capability.

[0235] For example, there may be a CSI reporting capability inquiry procedure and / or a CSI reporting configuration procedure, through which the terminal equipment may obtain the CSI delay information. The AI / ML capabilities of the terminal equipment may be known by the network device. Thus, the CSI delay information may be sufficient for the AI / ML module to generate an accurate CSI report.

[0236] The prediction result is applied for each CSI report. In the process of obtaining CSI, the terminal device can use its AI / ML module to perform CSI measurements based on the CSI delay or prediction step. CSI prediction becomes the default operation of the AI / ML module.

[0237] In some embodiments, the differential CSI is used to indicate the channel condition at the second time.

[0238] For example, the terminal device may first estimate the CSI for time instance n and then predict the differential CSI for time instance n+d, where n is the CSI reporting time instance and d is the delay time from time instance n to the time instance of downlink transmission using CSI feedback.

[0239] Thus, for example, the terminal device reports CSI in the format of differential CSI for CSI@n+n+d, where the number of bits in Part 1 (CSI@n) is the same as the number of bits in a conventional CSI report, and the number of bits in Part 2 is the differential CSI for prediction step d.

[0240] For example, if the CSI quality is CQI, 5 bits are used for feedback. In the above format, part 1 may use 5 bits for CQI, and part 2 may use 1 or 2 bits to indicate the prediction result. This method can also be applied to other CSI quality metrics such as precoding matrix indicator (PMI), CSI-RS resource indicator (CRI), SS / PBCH block resource indicator (SSBRI), tier indicator (LI), rank indicator (RI), L1-RSRP or L1-SINR.

[0241] In this example, if the prediction accuracy is provided by the terminal equipment, the network device may decide whether to use CSI@n or CSI@n + differential CSI@n+d based on the prediction accuracy, or the network device may determine it by using other feedback or the quality of other signals.

[0242] Another possibility is that the network device may decide whether to use CSI@n or CSI@n plus the differential CSI@n+d based on the QoS level to be used for the data being transmitted at time instance n+d.

[0243] In a further example, part 1 may be reported at a reporting timing without a prediction, and part 2 may be reported at a subsequent reporting timing with a prediction.

[0244] The terminal device may directly use the predicted CSI and use the same format in the CSI report. In this example, upon receiving the CSI report, the network device may use the report for data transmission at time instance n+d.

[0245] The above embodiments are merely illustrative of the embodiments of the present disclosure. However, the present disclosure is not limited thereto, and appropriate modifications may be made based on these implementations. For example, the above implementations may be implemented separately, or one or more of them may be implemented in a combined manner.

[0246] As can be seen from the above embodiment, a terminal device receives one or more reference signals to obtain measurement information; obtains CSI according to the measurement information; and transmits CSI at a first time according to a CSI reporting configuration, where the CSI indicates a channel state at least at a second time after the first time. Thus, the network device side can obtain accurate CSI for downlink transmission.

[0247] Second aspect of the embodiment In the present disclosure, a CSI reporting device is provided. The device may be a terminal device 102 or may be configured within the terminal device 102. Contents that are the same as those in the first aspect of the embodiment will be omitted.

[0248] FIG. 19 illustrates a block diagram of an apparatus 1900 according to an embodiment of the present disclosure.

[0249] 19, the apparatus 1900 includes a first receiving unit 1901, a first processing unit 1902, and a first transmitting unit 1903. The first receiving unit 1901 is configured to receive one or more reference signals to obtain measurement information; the first processing unit 1902 is configured to obtain CSI according to the measurement information; the first transmitting unit 1903 is configured to transmit CSI at a first time according to a CSI reporting configuration, where the CSI indicates a channel condition at least at a second time after the first time.

[0250] In some embodiments, the first receiving unit 1901 is configured to receive at least one of a first prediction instruction, a first prediction accuracy information, or a first prediction step information from a network device.

[0251] In some embodiments, the first prediction instruction is used to instruct the terminal device to predict CSI for the second time; the first prediction accuracy information is used to indicate one or more prediction accuracy requirements; and the first prediction step information is used to indicate a time interval between the first time and the second time.

[0252] In some embodiments, the first prediction indication and / or the first prediction accuracy information is transmitted via at least one of a radio resource control (RRC), a medium access control (MAC) control element (CE), or a downlink control information (DCI).

[0253] In some embodiments, the first prediction step information is scaled based on the subcarrier spacing (SCS).

[0254] In some embodiments, the first prediction step information is transmitted via at least one of a Radio Resource Control (RRC), a Medium Access Control (MAC) control element (CE), or a Downlink Control Information (DCI).

[0255] In some embodiments, the first transmitting unit 1903 is configured to transmit a request to the network device to indicate at least one of a reference signal periodicity, a reference signal interval, a reference signal number, or a mobility indication.

[0256] In some embodiments, the reference signal periodicity is used by the network device to determine a periodic or semi-persistent configuration of one or more reference signals.

[0257] In some embodiments, the reference signal interval or reference signal number or mobility indication is used by the network device to determine semi-persistent or aperiodic configuration of one or more reference signals.

[0258] In some embodiments, the first receiving unit 1901 is configured to receive a CSI reporting configuration and / or a reference signal resource configuration from a network device.

[0259] In some embodiments, at least one of the first prediction indication, the first prediction accuracy information, or the first prediction step information is included in a CSI reporting configuration.

[0260] In some embodiments, the reference signal resource configuration is determined by the network device according to at least one of a reference signal period, a reference signal interval, a reference signal number, or a mobility indication.

[0261] In some embodiments, the first processing unit 1902 is configured to determine that CSI prediction is not supported; the first transmitting unit 1903 is configured to send a predicted stop request; and the first receiving unit 1901 is configured to receive a predicted stop response.

[0262] In some embodiments, the first receiving unit 1901 is configured to receive a predicted stop indication.

[0263] In some embodiments, the first receiving unit 1901 is configured to receive a request to obtain CSI prediction capability; the transmitting unit is configured to report capability information regarding the CSI prediction capability.

[0264] In some embodiments, the first transmitting unit 1903 is configured to transmit a second prediction indication, where the second prediction indication is used to indicate that the terminal device predicts CSI at a second time.

[0265] In some embodiments, the first transmitting unit 1903 is configured to transmit at least one of the second prediction accuracy information, the second prediction step information, the reference signal configuration ID, the reference signal interval, the number of reference signals, or the mobility indication.

[0266] In some embodiments, the reference signal resource configuration is determined by the network device according to at least one of the second prediction accuracy information, the second prediction step information, the reference signal configuration ID, the reference signal interval, the number of reference signals, or the mobility indication.

[0267] In some embodiments, the first receiving unit 1901 is configured to receive a reliability level indication, where the reliability level indication is used to instruct the terminal device to obtain CSI for data transmission at a second time that can match a reliability level requirement.

[0268] In some embodiments, the first receiving unit 1901 is configured to receive a request to obtain a CSI reporting capability with a reliability level indicator, and the first transmitting unit 1903 is configured to report capability information regarding the CSI reporting capability with the reliability level indicator.

[0269] In some embodiments, the first receiving unit 1901 is configured to receive a CSI reporting configuration and / or a reference signal resource configuration, and the CSI delay information is included in the CSI reporting configuration.

[0270] In some embodiments, the first receiving unit 1901 is configured to receive CSI delay information, and the CSI delay information is used to instruct the terminal device to obtain CSI at a second time.

[0271] In some embodiments, the differential CSI is used to indicate the channel condition at the second time.

[0272] In the present disclosure, a CSI receiving device is provided. The device may be a network device 101 or may be configured in the network device 101, and the same content as in the first aspect will be omitted.

[0273] FIG. 20 shows a block diagram of an apparatus 2000 according to an embodiment of the present disclosure.

[0274] 20 , the apparatus 2000 includes a second transmitting unit 2001, a second processing unit 2002, and a second receiving unit 2003. The second transmitting unit 2001 is configured to transmit one or more reference signals according to a reference signal resource configuration; the second receiving unit 2003 is configured to receive CSI at a first time, where the CSI indicates a channel condition at least at a second time after the first time.

[0275] In some embodiments, the second sending unit 2001 is configured to send at least one of the first prediction instruction, the first prediction accuracy information and the first prediction step information to the terminal device.

[0276] In some embodiments, the first prediction instruction is used to instruct the terminal device to predict CSI for the second time; the first prediction accuracy information is used to indicate one or more prediction accuracy requirements; and the first prediction step information is used to indicate a time interval between the first time and the second time.

[0277] In some embodiments, the first prediction indication and / or the first prediction accuracy information is transmitted via at least one of a radio resource control (RRC), a medium access control (MAC) control element (CE), or a downlink control information (DCI).

[0278] In some embodiments, the first prediction step information is scaled based on the subcarrier spacing (SCS).

[0279] In some embodiments, the first prediction step information is transmitted via at least one of a Radio Resource Control (RRC), a Medium Access Control (MAC) control element (CE), or a Downlink Control Information (DCI).

[0280] In some embodiments, the second receiving unit 2003 is configured to receive a request from a terminal device indicating at least one of a reference signal period, a reference signal interval, a reference signal number, and a mobility indication.

[0281] In some embodiments, the reference signal periodicity is used by the network device to determine a periodic or semi-persistent configuration of one or more reference signals.

[0282] In some embodiments, the reference signal interval or reference signal number or mobility indication is used by the network device to determine semi-persistent or aperiodic configuration of one or more reference signals.

[0283] In some embodiments, the second transmitting unit 2001 is configured to transmit a CSI reporting configuration and / or a reference signal resource configuration to a terminal device.

[0284] In some embodiments, at least one of the first prediction indication, the first prediction accuracy information, or the first prediction step information is included in a CSI reporting configuration.

[0285] In some embodiments, the reference signal resource configuration is determined by the network device according to at least one of a reference signal period, a reference signal interval, a reference signal number, or a mobility indication.

[0286] In some embodiments, the second receiving unit 2003 is configured to receive a predicted stop request, and the second sending unit 2001 is configured to send a predicted stop response.

[0287] In some embodiments, the second processing unit 2002 is configured to determine that CSI prediction is not supported, and the second transmitting unit 2001 is configured to send a prediction stop indication.

[0288] In some embodiments, the second transmitting unit 2001 is configured to transmit a request to obtain CSI prediction capability; the second receiving unit 2003 is configured to receive capability information regarding the CSI prediction capability.

[0289] In some embodiments, the second processing unit 2002 is configured to receive a second prediction instruction, where the second prediction instruction is used to indicate that the terminal device predicts CSI at a second time.

[0290] In some embodiments, the second processing unit 2002 is configured to receive at least one of second prediction accuracy information, second prediction step information, reference signal configuration ID, reference signal interval, reference signal number, or mobility indication.

[0291] In some embodiments, the reference signal resource configuration is determined by the network device according to at least one of the second prediction accuracy information, the second prediction step information, the reference signal configuration ID, the reference signal interval, the number of reference signals, or the mobility indication.

[0292] In some embodiments, the second transmitting unit 2001 is configured to transmit a reliability level indication, where the reliability level indication is for instructing the terminal device to obtain CSI for data transmission at the second time that can match the reliability level requirement.

[0293] In some embodiments, the second transmitting unit 2001 is configured to transmit a request to obtain a CSI reporting capability with a reliability level indicator; the second receiving unit 2003 is configured to receive capability information regarding the CSI reporting capability with a reliability level indicator.

[0294] In some embodiments, the second transmitting unit 2001 is configured to transmit a CSI reporting configuration and / or a reference signal resource configuration, and the CSI delay information is included in the CSI reporting configuration.

[0295] In some embodiments, the second transmitting unit 2001 is configured to transmit CSI delay information, where the CSI delay information is used to instruct the terminal device to obtain CSI at a second time.

[0296] In some embodiments, the differential CSI is used to indicate the channel condition at the second time.

[0297] It should be understood that the components included in the apparatus 1900 or 2000 correspond to the operations of the above methods. Thus, all operations and features described above with reference to the above figures are equally applicable and have the same effect to the components included in the apparatus 1900 or 2000. Details are omitted for the sake of simplicity.

[0298] It should be understood that the components included in the apparatus 1900 or 2000 may be implemented in a variety of ways, including software, hardware, firmware, or any combination thereof.

[0299] In some embodiments, one or more of the units may be implemented using software and / or firmware, e.g., machine-executable instructions stored on a storage medium. In addition to or instead of machine-executable instructions, some or all of the components included in the apparatus 1900 or 2000 may be implemented, at least in part, by one or more hardware logic components.

[0300] For example, but not limited to, exemplary types of hardware logic components that may be used include field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard products (ASSPs), systems on a chip (SoCs), complex programmable logic devices (CPLDs), and the like.

[0301] The apparatus 1900 or 2000 may be a part of a device, but is not limited thereto, for example, the apparatus 1900 may be a terminal device 102, and other parts of the terminal device 102, such as a transmitter and a receiver, are omitted in FIG. 19. As another example, the apparatus 2000 may be a network device 101, and other parts of the network device 101, such as a transmitter and a receiver, are omitted in FIG.

[0302] As can be seen from the above embodiment, a terminal device receives one or more reference signals to obtain measurement information; obtains CSI according to the measurement information; and transmits CSI at a first time according to a CSI reporting configuration, where the CSI indicates a channel state at least at a second time after the first time. Thus, the network device side can obtain accurate CSI for downlink transmission.

[0303] Third aspect of the embodiment An embodiment of the present disclosure provides a communication system, and can refer to FIG. 1, and the same contents as the embodiment of the first aspect will not be further described here.

[0304] In some embodiments, the communication system 100 may include:

[0305] The terminal device 102 is configured to receive one or more reference signals to obtain measurement information; obtain CSI according to the measurement information; and transmit the CSI at a first time according to a CSI reporting configuration.

[0306] The network device 101 is configured to transmit one or more reference signals in accordance with a reference signal resource configuration; and receive CSI at a first time, the CSI indicative of channel conditions at least at a second time after the first time.

[0307] An embodiment of the present disclosure further provides a network device, which may be, for example, a base station, but the present disclosure is not limited thereto and may be other network devices.

[0308] 21 is a schematic diagram of a network device according to an embodiment of the present disclosure. As shown in FIG. 21, the network device 2100 may include a processor 2110 (e.g., a central processing unit (CPU)) and a memory 2120, which is coupled to the processor 2110. The memory 2120 may store various data, and may further store a program 2130 for data processing and execute the program 2130 under the control of the processor 2110.

[0309] For example, the processor 2110 may be configured to execute the program to perform the method described in the first aspect of the embodiment. For example, the processor 2110 may be configured to execute the following controls: transmit one or more reference signals according to a reference signal resource configuration; and receive CSI at a first time, where the CSI indicates a channel condition at least at a second time after the first time.

[0310] Further, as shown in FIG. 21, the network device 2100 may include a transceiver 2140, an antenna 2150, etc. The functions of the above components are similar to those in the related art, and will not be further described here. It should be noted that the network device 2100 does not necessarily include all the parts shown in FIG. 21, and further, the network device 2100 may include parts not shown in FIG. 21, and may refer to the related art.

[0311] Although the embodiment of the present disclosure further provides a terminal device, the present disclosure is not limited thereto and may be other devices.

[0312] Fig. 22 is a schematic diagram of a terminal device according to an embodiment of the present disclosure. As shown in Fig. 22, the terminal device 2200 may include a processor 2210 and a memory 2220, where the memory 2220 stores data and programs and is connected to the processor 2210. It should be noted that this diagram is merely illustrative, and other types of structures may be used to supplement or replace this structure to realize telecommunication functions or other functions.

[0313] For example, the processor 2210 may be configured to execute a program for performing the method described in the first aspect of the embodiment. For example, the processor 2210 may be configured to receive one or more reference signals to obtain measurement information; obtain CSI according to the measurement information; and control to transmit the CSI at a first time according to a CSI reporting configuration, where the CSI indicates a channel condition at least at a second time after the first time.

[0314] As shown in Fig. 22, the terminal device 2200 may further include a communication module 2230, an input unit 2240, a display 2250 and a power supply 2260, and the functions of the above components are similar to those of the prior art, so they will not be further described here. It should be noted that the terminal device 2200 does not necessarily include all the parts shown in Fig. 22, and the above components are not essential. In addition, the terminal device 2200 may include parts not shown in Fig. 22, and may refer to the prior art.

[0315] An embodiment of the present disclosure provides a computer program which, when executed in a terminal device, causes the terminal device to perform the method described above in the first aspect of the embodiment.

[0316] An embodiment of the present disclosure provides a storage medium containing a computer program which, when executed in a terminal device, causes the terminal device to perform the method set forth above in the first aspect of the embodiment.

[0317] An embodiment of the present disclosure provides a computer program which, when executed in a network device, causes the network device to perform the method set out above in the first aspect of the embodiment.

[0318] An embodiment of the present disclosure provides a storage medium comprising a computer program which, when executed in a network device, causes the network device to perform the method set forth above in the first aspect of the embodiment.

[0319] The above-mentioned apparatus and method of the present disclosure may be implemented by hardware or by hardware combined with software. The present disclosure relates to a computer-readable program, which when executed by a logic device, enables the logic device to execute the above-mentioned apparatus or component or execute the above-mentioned method or step. The present disclosure also relates to a storage medium, such as a hard disk, a magnetic disk, a CD, a DVD, a flash memory, etc., that stores the above-mentioned program.

[0320] The methods / apparatuses described with reference to the embodiments of the present disclosure may be embodied directly as hardware, software modules executed by a processor, or a combination thereof. For example, one or more functional block diagrams and / or one or more combinations of functional block diagrams shown in the drawings may correspond to software modules of a computer program procedure or to hardware modules. Such software modules may respectively correspond to steps shown in the drawings. The hardware modules may be realized by farming the software modules using, for example, a field programmable gate array (FPGA).

[0321] The soft module may be located in a RAM, a flash memory, a ROM, an EPROM, an EEPROM, a register, a hard disk, a floppy disk, a CD-ROM, or any other form of memory medium known in the art. The memory medium may be coupled to the processor such that the processor can read information from the memory medium and write information to the memory medium, or the memory medium may be a component of the processor. The processor and the memory medium may be located in an ASIC. The soft module may be stored in a memory of the mobile terminal, or in a pluggable memory card of the mobile terminal. For example, if the equipment (e.g., a mobile terminal) employs a relatively large capacity MEGA-SIM card or a large capacity flash memory device, the soft module may be stored in the MEGA-SIM card or the large capacity flash memory device.

[0322] One or more of the functional blocks and / or one or more combinations of functional blocks in the figures may be implemented as a universal processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, or any suitable combination thereof that performs the functions described herein. Also, one or more of the functional block diagrams and / or one or more combinations of functional block diagrams in the figures may be implemented as a combination of computing devices, such as a combination of a DSP and a microprocessor, multiple processors, one or more microprocessors communicatively coupled to a DSP, or any other such configuration.

[0323] The present disclosure has been described above with reference to specific embodiments. However, those skilled in the art should understand that such description is merely illustrative and is not intended to limit the protection scope of the present invention. According to the principle of the present invention, various variations and modifications may be made by those skilled in the art, and such variations and modifications fall within the scope of the present invention.

[0324] Regarding implementations including the above embodiments, the following notes are further disclosed.

[0325] [Addendum 1] 1. A method for reporting channel state information (CSI), comprising: receiving, by a terminal device, one or more reference signals to obtain measurement information; obtaining CSI according to the measurement information; and transmitting the CSI at a first time according to a CSI reporting configuration, the CSI being indicative of channel conditions at least at a second time after the first time. method. [Addendum 2] The method further comprises: receiving, by the terminal device, at least one of a first prediction instruction, first prediction accuracy information, and first prediction step information from a network device; Method described in Supplementary Note 1. [Addendum 3] The method described in Supplementary Note 2, wherein the first prediction instruction is used to instruct the terminal equipment to predict CSI for the second time; the first prediction accuracy information is used to indicate one or more prediction accuracy requirements; and the first prediction step information is used to indicate a time interval between the first time and the second time. [Addendum 4] The method of claim 2 or 3, wherein the first prediction instruction and / or the first prediction accuracy information is transmitted via at least one of a radio resource control (RRC), a medium access control (MAC) control element (CE), or a downlink control information (DCI). [Addendum 5] A method according to any one of supplements 2 to 4, wherein the first prediction step information is scaled according to a subcarrier spacing (SCS). [Addendum 6] A method according to any one of supplements 2 to 5, wherein the first prediction step information is transmitted via at least one of a radio resource control (RRC), a medium access control (MAC) control element (CE), or downlink control information (DCI). [Addendum 7] The method further comprises: transmitting, by the terminal device, a request to a network device to indicate at least one of a reference signal period, a reference signal interval or a number of reference signals, and / or a mobility indication; A method according to any one of claims 1 to 6. [Addendum 8] The method of claim 7, wherein the reference signal periodicity is used by the network device to determine a periodic or semi-persistent configuration of the one or more reference signals. [Addendum 9] The method described in Supplementary Note 7, wherein the reference signal interval or reference signal number or mobility indication is used by the network device to determine the number and / or location of non-periodic reference signals. [Addendum 10] The method further comprises: receiving, by the terminal device, the CSI reporting configuration and / or the reference signal resource configuration from a network device; A method according to any one of claims 1 to 9. [Addendum 11] At least one of a first prediction instruction, a first prediction accuracy information, or a first prediction step information is included in the CSI reporting configuration; The reference signal resource configuration is determined by the network device according to at least one of a reference signal period, a reference signal interval, a reference signal number, or a mobility indication; The method described in Supplementary Note 10. [Addendum 12] The method further comprises: determining, by the terminal device, that CSI prediction is not supported; sending, by the terminal device, a predictive stop request to a network device; receiving, by the terminal equipment, a predicted outage response from the network device; The method according to any one of claims 1 to 11. [Addendum 13] The method further comprises: receiving, by the terminal device, a predicted stop indication from a network device; The method according to any one of claims 1 to 11. [Addendum 14] The method further comprises: receiving, by the terminal device, a capability inquiry from a network device; and reporting a capability response by the terminal device to the network device. A method according to any one of claims 1 to 13. [Addendum 15] The method described in Supplementary Note 14, wherein the capability inquiry is used to obtain at least one of CSI prediction capability, AI / ML capability for CSI measurement or CSI prediction, CSI measurement or CSI prediction for a certain QoS or reliability level requirement, CSI measurement or CSI prediction for a certain QoS or reliability level requirement via AI / ML, and CSI measurement or CSI prediction for a certain CSI delay. [Addendum 16] 16. The method of claim 14 or 15, wherein AI / ML related information is included in the capability query and / or AI / ML related information is included in the capability response. [Addendum 17] The method further comprises: receiving, by the terminal device, activation information from the network device for triggering periodic CSI reporting through a CSI reporting configuration, and / or triggering semi-persistent CSI reporting through a MAC CE or DCI, and / or triggering aperiodic CSI reporting through a DCI; 17. The method according to any one of claims 14 to 16. [Addendum 18] 18. The method of claim 17, wherein information for enabling or disabling AI / ML is included in the CSI reporting configuration. [Addendum 19] The method further comprises: transmitting, by the terminal device, a second prediction indication to a network device, the second prediction indication being used to indicate that the terminal device predicts the CSI at the second time; Method described in Supplementary Note 1. [Addendum 20] The method further comprises: transmitting, by the terminal device, at least one of second prediction accuracy information, second prediction step information, a reference signal configuration ID, a reference signal interval, a reference signal number, and a mobility indication to the network device; A method according to any one of claims 1 to 19. [Addendum 21] The method described in Supplementary Note 20, wherein the reference signal resource configuration is determined by the network device according to at least one of the second prediction accuracy information, the second prediction step information, a reference signal configuration ID, a reference signal interval, a number of reference signals, or a mobility indication. [Addendum 22] The method further comprises: The method described in Supplement 1, comprising a step of receiving a reliability level indication from a network device by the terminal equipment, the reliability level indication being used to instruct the terminal equipment to obtain CSI for data transmission at the second time that can meet the reliability level requirement. [Addendum 23] The method further comprises: receiving, by the terminal equipment, a request from the network device to obtain CSI reporting capability including a reliability level indicator; reporting, by the terminal device, capability information regarding the CSI reporting capability, including a reliability level indicator, to the network device; The method described in Supplementary Note 1 or 22. [Addendum 24] The method further comprises: receiving, by the terminal device, the CSI reporting configuration and / or the reference signal resource configuration from the network device, the CSI reporting configuration including CSI delay information; The method described in Supplementary Note 1 or 23. [Addendum 25] 25. The method of any one of supplements 1 to 24, wherein the CSI delay information is scaled based on a subcarrier spacing (SCS). [Addendum 26] The method further comprises: receiving, by the terminal equipment, CSI delay information from a network device, the CSI delay information being used to instruct the terminal equipment to acquire CSI at the second time; Method described in Supplementary Note 1. [Addendum 27] 27. The method of any one of supplementary statements 1 to 26, wherein differential CSI is used to indicate the channel condition at the second time. [Addendum 28] 1. A method for receiving channel state information (CSI), comprising: transmitting, by the network device, one or more reference signals in accordance with the reference signal resource configuration; receiving CSI at a first time, the CSI indicative of channel conditions at least at a second time, the second time being later than the first time; method. [Addendum 29] The method further comprises: transmitting at least one of a first prediction instruction, first prediction accuracy information, and first prediction step information by the network device to a terminal device; The method described in Supplementary Note 27. [Addendum 30] The method of claim 29, wherein the first prediction instruction is used to instruct the terminal device to predict CSI for the second time; the first prediction accuracy information is used to indicate one or more prediction accuracy requirements; and the first prediction step information is used to indicate a time interval between the first time and the second time. [Addendum 31] 31. The method of claim 29 or 30, wherein the first prediction instruction and / or the first prediction accuracy information is transmitted via at least one of a radio resource control (RRC), a medium access control (MAC) control element (CE), or a downlink control information (DCI). [Addendum 32] 32. A method according to any one of supplements 29 to 31, wherein the first prediction step information is scaled based on a subcarrier spacing (SCS). [Addendum 33] 33. A method according to any one of supplements 29 to 32, wherein the first prediction step information is transmitted via at least one of a radio resource control (RRC), a medium access control (MAC) control element (CE), or downlink control information (DCI). [Addendum 34] The method further comprises: receiving, by the network device, a request from the terminal device indicating at least one of a reference signal period, a reference signal interval, a reference signal number, and a mobility indication; A method according to any one of claims 28 to 33. [Addendum 35] 35. The method of claim 34, wherein the reference signal periodicity is used by the network device to determine a periodic or semi-persistent configuration of the one or more reference signals. [Addendum 36] The method of claim 34, wherein the reference signal interval or reference signal number or mobility indication is used by the network device to determine the number and / or location of non-periodic reference signals. [Addendum 37] The method further comprises: transmitting, by the network device, the CSI reporting configuration and / or the reference signal resource configuration to the terminal device; 37. The method according to any one of claims 28 to 36. [Addendum 38] At least one of a first prediction instruction, a first prediction accuracy information, or a first prediction step information is included in the CSI reporting configuration; The reference signal resource configuration is determined by the network device according to at least one of a reference signal period, a reference signal interval, a reference signal number, or a mobility indication; The method described in Supplementary Note 37. [Addendum 39] The method further comprises: receiving, by the network device, a predicted stop request from the terminal equipment; and transmitting a predicted stop response by the network device to the terminal equipment. A method according to any one of claims 28 to 38. [Addendum 40] The method further comprises: determining, by the network device, that CSI prediction is not supported; and transmitting a predicted stop indication to the terminal device by the network device. A method according to any one of claims 28 to 38. [Addendum 41] The method further comprises: sending, by the network device, a capability query to the terminal equipment; receiving, by the network device, a capability response transmitted from the terminal equipment; The method according to any one of claims 28 to 40. [Addendum 42] The method described in Supplementary Note 41, wherein the capability inquiry is used to obtain at least one of CSI prediction capability, AI / ML capability for CSI measurement or CSI prediction, CSI measurement or CSI prediction for a certain QoS or reliability level requirement, CSI measurement or CSI prediction for a certain QoS or reliability level requirement via AI / ML, and CSI measurement or CSI prediction for a certain CSI delay. [Addendum 43] The method of claim 41 or 42, wherein AI / ML related information is included in the capability inquiry and / or AI / ML related information is included in the capability response. [Addendum 44] The method further comprises: receiving, by the terminal device, activation information from the network device for triggering periodic CSI reporting through a CSI reporting configuration, and / or triggering semi-persistent CSI reporting through a MAC CE or DCI, and / or triggering aperiodic CSI reporting through a DCI; A method according to any one of claims 41 to 43. [Addendum 45] 45. The method of claim 44, wherein information for enabling or disabling AI / ML is included in the CSI reporting configuration. [Addendum 46] The method further comprises: receiving, by the network device, a second prediction indication from a terminal device, the second prediction indication being used to indicate that the terminal device predicts the CSI for the second time; Method as described in Supplementary Note 28. [Addendum 47] The method further comprises: receiving, by the network device, at least one of second prediction accuracy information, second prediction step information, a reference signal configuration ID, a reference signal interval, a reference signal number, or a mobility indication; The method described in Supplementary Note 28 or 46. [Addendum 48] The method described in Supplementary Note 47, wherein the reference signal resource configuration is determined by the network device according to at least one of the second prediction accuracy information, the second prediction step information, a reference signal configuration ID, a reference signal interval, a number of reference signals, or a mobility indication. [Addendum 49] The method further comprises: transmitting a reliability level indication by the network device to the terminal equipment, the reliability level indication being used to instruct the terminal equipment to acquire CSI at the second time; Method as described in Supplementary Note 28. [Addendum 50] The method further comprises: sending, by the network device to the terminal equipment, a request to obtain CSI reporting capability, the CSI reporting capability including a reliability level indicator; receiving, by the network device, capability information from the terminal equipment, regarding the CSI reporting capability, the capability information including a reliability level indicator; The method described in Supplementary Note 28 or 49. [Addendum 51] The method further comprises: transmitting the CSI reporting configuration and / or the reference signal resource configuration to the terminal device by the network device, wherein the CSI reporting configuration includes CSI delay information; The method described in Supplementary Note 50. [Addendum 52] The method further comprises: transmitting CSI delay information to the terminal device by the network device, the CSI delay information being used to instruct the terminal device to acquire the CSI at the second time; Method as described in Supplementary Note 28. [Addendum 53] 53. The method of any one of supplements 28 to 52, wherein the CSI delay information is scaled based on a subcarrier spacing (SCS). [Addendum 54] 54. The method of any one of supplementary statements 28 to 53, wherein differential CSI is used to indicate the channel condition at the second time. [Addendum 55] A terminal device comprising a processor and a memory, the memory including instructions executable by the processor, whereby the terminal device operates to perform the method described in any one of supplements 1 to 27. [Addendum 56] A network device comprising a processor and a memory, the memory including instructions executable by the processor, whereby the network device operates to perform a method as described in any one of claims 28 to 54. [Addendum 57] A computer program product comprising instructions tangibly stored on a computer-readable storage medium and which, when executed on a processor of a terminal device, cause the terminal device to perform the method according to any one of claims 1 to 27. [Addendum 58] A computer program product comprising instructions tangibly stored on a computer-readable storage medium and which, when executed on a processor of a network device, cause the network device to perform a method as described in any one of claims 28 to 54.

[0326] The following supplementary notes are further disclosed regarding the embodiments including the above examples. (Appendix 1) 1. An apparatus for reporting channel state information (CSI), comprising: A first receiving unit configured to receive one or more reference signals to obtain measurement information; a first processing unit configured to obtain CSI according to the measurement information; a first transmission unit configured to transmit the CSI at a first time according to a CSI reporting configuration, the CSI indicating at least a channel condition at a second time after the first time; Device. (Appendix 2) The first receiving unit is configured to receive at least one of a first prediction instruction, a first prediction accuracy information, or a first prediction step information; The apparatus of claim 1, wherein the first prediction instruction is used to instruct a terminal device to predict CSI for the second time; the first prediction accuracy information is used to indicate one or more prediction accuracy requirements; and the first prediction step information is used to represent a time interval between the first time and the second time. (Appendix 3) The apparatus of claim 2, wherein the first prediction instruction, the first prediction step information, or the first prediction accuracy information is transmitted via at least one of a radio resource control (RRC), a medium access control (MAC) control element (CE), or a downlink control information (DCI). (Appendix 4) 3. The apparatus of claim 2, wherein the first prediction step information is scaled based on a subcarrier spacing (SCS). (Appendix 5) The first sending unit is configured to send a request to indicate at least one of a reference signal period, a reference signal interval, a reference signal number, or a mobility indication; The apparatus of claim 1, wherein the reference signal periodicity and / or mobility indication are used by the network device to determine a periodic or semi-persistent configuration of the one or more reference signals; and the reference signal interval and / or reference signal number and / or mobility indication are used by the network device to determine the number and / or location of non-periodic reference signals. (Appendix 6) the first receiving unit is configured to receive the CSI reporting configuration and / or the reference signal resource configuration; The CSI reporting configuration includes at least one of a first prediction instruction, a first prediction accuracy information, or a first prediction step information; the reference signal resource configuration is determined by a network device according to at least one of a reference signal period, a reference signal interval, a reference signal number, or a mobility instruction. 2. The apparatus described in claim 1. (Appendix 7) The first processing unit is configured to determine that CSI prediction is not supported; The first transmitting unit is configured to transmit a predicted stop request; and the first receiving unit is configured to receive a predicted stop response. 2. The apparatus described in claim 1. (Appendix 8) 2. The apparatus of claim 1, wherein the first receiving unit is configured to receive a predicted stop instruction. (Appendix 9) The first receiving unit is configured to receive a capability inquiry; the first transmitting unit is configured to report a capability response; The capability inquiry is used to obtain at least one of a CSI prediction capability, an AI / ML capability for CSI measurement or CSI prediction, a CSI measurement or CSI prediction for a certain QoS or reliability level, a CSI measurement or CSI prediction for a certain QoS or reliability level via AI / ML, and a CSI measurement or CSI prediction for a certain CSI delay. 2. The apparatus described in claim 1. (Appendix 10) 2. The apparatus of claim 1, wherein the first transmitting unit is configured to transmit a second prediction indication; and the second prediction indication is used to indicate that the terminal device predicts CSI at the second time. (Appendix 11) The first sending unit is configured to send at least one of second prediction accuracy information, second prediction step information, a reference signal configuration ID, a reference signal interval, a reference signal number, or a mobility indication; A reference signal resource configuration is determined by the network device according to at least one of the second prediction accuracy information, the second prediction step information, a reference signal configuration ID, a reference signal interval, a reference signal number, or a mobility indication. 2. The apparatus described in claim 1. (Appendix 12) 2. The apparatus of claim 1, wherein the first receiving unit is configured to receive a reliability level indication, the reliability level indication being used to instruct the terminal device to obtain CSI for data transmission at the second time that can meet the reliability level requirement. (Appendix 13) 13. The apparatus of claim 12, wherein the first receiving unit is configured to receive a request to obtain a CSI reporting capability having a reliability level indicator, and the first transmitting unit is configured to report capability information regarding the CSI reporting capability having a reliability level indicator. (Appendix 14) 14. The apparatus of claim 13, wherein the first receiving unit is configured to receive the CSI reporting configuration and / or the reference signal resource configuration, and CSI delay information is included in the CSI reporting configuration. (Appendix 15) 2. The apparatus of claim 1, wherein the first receiving unit is configured to receive CSI delay information; and the CSI delay information is used to instruct the terminal device to acquire CSI at the second time. (Appendix 16) 2. The apparatus of claim 1, wherein differential CSI is used to indicate the channel condition at the second time. (Appendix 17) 16. An apparatus for receiving channel state information (CSI), comprising: a second transmitting unit configured to transmit one or more reference signals according to the reference signal resource configuration; a second receiving unit configured to receive CSI at a first time, the CSI indicative of at least a channel condition at a second time after the first time; Device. (Appendix 18) the second sending unit is configured to send at least one of a first prediction instruction, a first prediction accuracy information, or a first prediction step information; the first prediction instruction is used to instruct the terminal device to predict CSI at the second time; the first prediction accuracy information is used to indicate one or more prediction accuracy requirements; and the first prediction step information is used to indicate a time interval between the first time and the second time. 18. The apparatus of claim 17. (Appendix 19) The second receiving unit is configured to receive a request to indicate at least one of a reference signal period, a reference signal interval, a reference signal number, or a mobility indication; the reference signal periodicity or mobility indication is used by the network device to determine a periodic or semi-persistent configuration of the one or more reference signals; the reference signal interval or the reference signal number or the mobility indication is used by the network device to determine a semi-persistent or aperiodic configuration of the one or more reference signals; 18. The apparatus of claim 17. (Appendix 20) A network system comprising: a terminal device configured to receive one or more reference signals to obtain measurement information; obtain CSI according to the measurement information; and transmit the CSI at a first time according to a CSI reporting configuration; and a network device configured to transmit one or more reference signals according to a reference signal resource configuration; and receive the CSI at the first time, the CSI indicative of a channel condition at least at a second time after the first time. Network systems. [Explanation of symbols]

[0327] 301 A terminal device receives one or more reference signals and obtains measurement information. 302 The terminal device obtains the CSI according to the measurement information. 303 A terminal device transmits CSI at a first time according to a CSI reporting configuration, the CSI indicating a channel condition at least at a second time after the first time. 801 First Prediction 802 One or more reference signals Get 803 CSI 804 CSI at a first time, the CSI being indicative of a channel condition at least at a second time 901 First prediction instruction (first prediction accuracy information and / or first prediction step information) 902 One or more reference signals Get 903 CSI 904 CSI at a first time, the CSI indicating at least a channel condition at a second time 1001 Request to indicate reference signal period 1002 CSI reporting configuration and / or reference signal resource configuration 1003 One or more reference signals Get 1004 CSI 1005 CSI at a first time, the CSI indicating at least a channel condition at a second time. 1101 Request to indicate reference signal interval and / or number of reference signals 1102 One or more reference signals Get 1103 CSI 1104 CSI at a first time, the CSI indicating at least a channel condition at a second time. 1201 First prediction instruction (first prediction accuracy information and / or first prediction step information) 1202 CSI prediction not supported 1203 Predictive Stop Request 1204 Predictive Stop Response 1301 First prediction instruction (first prediction accuracy information and / or first prediction step information) 1302 A request to indicate at least one of a reference signal period, a reference signal interval, a reference signal number, and a mobility indication. 1303 CSI prediction not supported 1304 Predictive stop instruction 1401 Request to obtain CSI prediction capability 1402 CSI Prediction Capability Information 1403 CSI reporting settings and / or RS resource configuration for potential predictive operations 1404 Request to indicate CSI reporting configuration ID and / or RS resource configuration ID and / or reference signal interval 1405 One or more reference signals Get 1406 CSI 1407 CSI at a first time, the CSI indicating at least a channel condition at a second time 1501 Second prediction instruction (second prediction accuracy information, second prediction step information, reference signal configuration ID, reference signal interval, reference signal number, or mobility instruction) 1502 One or more reference signals Get 1503 CSI 1504 CSI at a first time, the CSI being indicative of a channel condition at least at a second time. 1601 Request to obtain CSI reporting capability with confidence level indicator 1602 Capability information regarding CSI reporting capabilities with confidence level indicators 1603 CSI reporting configuration and / or reference signal resource configuration 1604 One or more reference signals Get 1605 CSI 1606 CSI at a first time, the CSI indicating at least a channel condition at a second time. 1701 CSI Reporting Capability Inquiry 1702 CSI Capabilities Response 1703 Exchange RS period, CSI delay or prediction accuracy 1704 CSI reporting configuration and / or reference signal resource configuration 1705 CSI Report Activated 1706 One or more reference signals Get 1707 CSI 1708 CSI at a first time, the CSI being indicative of a channel condition at least at a second time. 1801 CSI Delay Information 1802 One or more reference signals 1803 Get CSI 1804 CSI at a first time, the CSI being indicative of a channel condition at least at a second time.

Claims

1. 16. An apparatus for reporting channel state information (CSI), comprising: A first receiving unit configured to receive one or more reference signals to obtain measurement information; a first processing unit configured to obtain CSI according to the measurement information; a first transmission unit configured to transmit the CSI at a first time according to a CSI reporting configuration, the CSI indicating at least a channel condition at a second time after the first time; Device.

2. The first receiving unit is configured to receive at least one of a first prediction instruction, a first prediction accuracy information, or a first prediction step information; 2. The apparatus of claim 1, wherein the first prediction instruction is used to instruct a terminal device to predict CSI for the second time; the first prediction accuracy information is used to indicate one or more prediction accuracy requirements; and the first prediction step information is used to represent a time interval between the first time and the second time.

3. 3. The apparatus of claim 2, wherein the first prediction indication, the first prediction step information, or the first prediction accuracy information is transmitted via at least one of a radio resource control (RRC), a medium access control (MAC) control element (CE), or a downlink control information (DCI).

4. The apparatus of claim 2 , wherein the first prediction step information is scaled based on a subcarrier spacing (SCS).

5. The first sending unit is configured to send a request to indicate at least one of a reference signal period, a reference signal interval, a reference signal number, or a mobility indication; The apparatus of claim 1 , wherein the reference signal periodicity and / or mobility indication are used by a network device to determine a periodic or semi-persistent configuration of the one or more reference signals; and the reference signal interval and / or reference signal number and / or mobility indication are used by the network device to determine a number and / or location of non-periodic reference signals.

6. The first receiving unit is configured to receive the CSI reporting configuration and / or the reference signal resource configuration; The CSI reporting configuration includes at least one of a first prediction instruction, a first prediction accuracy information, or a first prediction step information; and the reference signal resource configuration is determined by a network device according to at least one of a reference signal period, a reference signal interval, a reference signal number, or a mobility instruction.

2. The apparatus of claim 1.

7. The first processing unit is configured to determine that CSI prediction is not supported; The first transmitting unit is configured to transmit a predicted stop request; and the first receiving unit is configured to receive a predicted stop response.

2. The apparatus of claim 1.

8. The apparatus of claim 1 , wherein the first receiving unit is configured to receive a predicted stop indication.

9. The first receiving unit is configured to receive a capability inquiry; and the first transmitting unit is configured to report a capability response; The capability inquiry is used to obtain at least one of a CSI prediction capability, an AI / ML capability for CSI measurement or CSI prediction, a CSI measurement or CSI prediction for a certain QoS or reliability level, a CSI measurement or CSI prediction for a certain QoS or reliability level via AI / ML, and a CSI measurement or CSI prediction for a certain CSI delay.

2. The apparatus of claim 1.

10. 2. The apparatus of claim 1, wherein the first transmitting unit is configured to transmit a second prediction indication; and the second prediction indication is used to indicate that the terminal device predicts CSI at the second time.

11. The first sending unit is configured to send at least one of second prediction accuracy information, second prediction step information, a reference signal configuration ID, a reference signal interval, a reference signal number, or a mobility indication; A reference signal resource configuration is determined by the network device according to at least one of the second prediction accuracy information, the second prediction step information, a reference signal configuration ID, a reference signal interval, a reference signal number, or a mobility indication.

2. The apparatus of claim 1.

12. 2. The apparatus of claim 1, wherein the first receiving unit is configured to receive a reliability level indication, the reliability level indication being used to instruct the terminal device to obtain CSI for data transmission at the second time that can meet the reliability level requirement.

13. 13. The apparatus of claim 12, wherein the first receiving unit is configured to receive a request to obtain a CSI reporting capability having a reliability level indicator, and the first transmitting unit is configured to report capability information regarding the CSI reporting capability having a reliability level indicator.

14. The apparatus of claim 13 , wherein the first receiving unit is configured to receive the CSI reporting configuration and / or the reference signal resource configuration, and CSI delay information is included in the CSI reporting configuration.

15. 2. The apparatus of claim 1, wherein the first receiving unit is configured to receive CSI delay information; and the CSI delay information is used to instruct the terminal device to acquire CSI at the second time.

16. 2. The apparatus of claim 1, wherein differential CSI is used to indicate the channel condition at the second time.

17. 16. An apparatus for receiving channel state information (CSI), comprising: a second transmitting unit configured to transmit one or more reference signals according to the reference signal resource configuration; a second receiving unit configured to receive CSI at a first time, the CSI indicative of at least a channel condition at a second time after the first time; Device.

18. The second sending unit is configured to send at least one of a first prediction instruction, a first prediction accuracy information, or a first prediction step information; the first prediction instruction is used to instruct the terminal device to predict CSI at the second time; the first prediction accuracy information is used to indicate one or more prediction accuracy requirements; and the first prediction step information is used to indicate a time interval between the first time and the second time.

20. The apparatus of claim 17.

19. The second receiving unit is configured to receive a request to indicate at least one of a reference signal period, a reference signal interval, a reference signal number, or a mobility indication; The reference signal periodicity or mobility indication is used by a network device to determine a periodic or semi-persistent configuration of the one or more reference signals; the reference signal interval or the reference signal number or the mobility indication is used by the network device to determine a semi-persistent or aperiodic configuration of the one or more reference signals.

20. The apparatus of claim 17.

20. 1. A network system comprising: a terminal device configured to receive one or more reference signals to obtain measurement information; obtain CSI according to the measurement information; and transmit the CSI at a first time according to a CSI reporting configuration; and a network device configured to transmit one or more reference signals according to a reference signal resource configuration; and receive the CSI at the first time, the CSI indicative of a channel condition at least at a second time after the first time. Network system.

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