Method and apparatus for reporting and receiving channel status information

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] Embodiments of the present disclosure generally relate to the field of communications.

Background Art

[0002] This section introduces aspects that may facilitate a better understanding of the present disclosure. Thus, the statements in this section should be read from this perspective and should not be construed as an admission as to what is prior art or what is not prior art.

[0003] As technologies that have become popular in recent years, artificial intelligence (AI) and / or machine learning (ML) have been applied in many application fields such as image processing, video processing, natural language processing, and automotive driving. Research and discussions on applying AI / ML to 3GPP (registered trademark) standards and mobile systems have also generally become common.

[0004] In the working group of the 3GPP (registered trademark) radio access network (RAN), there is a research item in RAN3 of Rel-17, "Research on Improvement of Data Collection for NR and ENDC". In Rel-18, it has been approved as a work item. Also, AI / ML for the air interface has been widely discussed among companies. This has been concluded as a research item in Rel-18 led by RAN1. Furthermore, it is predicted that AI / ML will 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, and positioning. As an alternative to conventional methods, AI / ML can bring significant gains over conventional methods with respect to KPIs such as overhead reduction, performance improvement, and latency reduction.

[0006] In data-driven methods, AL / ML models are trained offline using data generated from simulations and / or field data. Online training may also be supported in some use cases. In this way, AI / ML models can be updated with high adaptability to their application scenarios.

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

[0008] The network device then uses this information to determine the modulation and coding scheme (MCS), multiple input multiple output (MIMO) parameters (e.g., layers), and pre-coding / beamforming for its downlink transmission. Similarly, link adaptation methods are also used in the uplink direction. In addition to feedback-based methods, sounding reference signal (SRS)-based methods using time-division duplexing (TDD) reciprocity are also common methods for link adaptation. [Overview of the Initiative] [Problems that the invention aims to solve]

[0009] This summary is provided to introduce a selection of concepts that will be further explained in the detailed description below. This summary is not intended to identify any major 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 found that one challenge to these closed-loop link adaptation methods stems from latency between channel measurement and data transmission based on the measurement results. In some application scenarios, such as high-mobility scenarios, the channel state (e.g., channel coefficients) can undergo significant changes due to latency. As a result, the performance gain from link adaptation is reduced. [Means for solving the problem]

[0011] To address at least some of the above-mentioned problems, this disclosure provides methods, apparatus, devices, and computer programs. Embodiments of this disclosure are not limited to wireless systems operating in an NR network, but may be more broadly applied to any application scenario where similar problems exist.

[0012] Generally, embodiments of this disclosure provide methods and apparatus for reporting and receiving CSIs. It is expected that accurate CSIs for downlink transmissions will be obtained.

[0013] According to certain aspects of embodiments of this disclosure, a method for reporting CSI is provided. This method is:

[0014] The terminal device receives one or more reference signals to obtain measurement information;

[0015] To obtain CSI according to the aforementioned measurement information;

[0016] The CSI is transmitted in accordance with the CSI reporting configuration at a first time, the CSI indicating the channel state at least at a second time after the first time.

[0017] According to another aspect of the embodiments of this disclosure, a device for reporting channel status information (CSI) is provided. This device is:

[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 according to a CSI reporting configuration, wherein the CSI indicates at least a channel state at a second time after the first time.

[0021] In another aspect of embodiments of the present disclosure, a method for receiving channel state information (CSI) is provided. The method includes:

[0022] Transmitting, by a network device, one or more reference signals according to a reference signal resource configuration;

[0023] Receiving CSI at a first time, wherein the CSI indicates at least a channel state at a second time after the first time.

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

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

[0026] A second receiving unit configured to receive CSI at a first time, wherein the CSI indicates at least a channel state at a second time after the first time.

[0027] According to another aspect of embodiments of the present invention, a network system is provided. The network system includes:

[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] 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, wherein the CSI indicates at least a channel state 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, transmits the CSI at a first time according to a CSI reporting configuration, and the CSI indicates at least a channel state at a second time after the first time. Therefore, on the network device side, CSI can be used to obtain CSI that matches the channel state of the time instance of downlink transmission.

[0031] Referring to the following description and drawings, specific embodiments of the present disclosure are disclosed in detail, and the principles and usage modes of the present disclosure are shown. 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 other embodiments.

[0033] As used herein, the terms "having / have / include / including" are to be construed as specifying the presence of the stated features, integers, steps, or components, but do not preclude the presence or addition of one or more other features, integers, steps, components, or groups thereof. [Brief explanation of the drawing]

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

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

[0036] [Figure 2] This is a schematic diagram showing the reference signal and fading channel.

[0037] [Figure 3] This is a schematic diagram illustrating a CSI reporting method according to one embodiment of the present disclosure.

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

[0039] [Figure 5] This is a schematic diagram showing the reference signal and downlink transmission.

[0040] [Figure 6] This is another schematic diagram showing the reference signal and downlink transmission.

[0041] [Figure 7] This is another schematic diagram showing the reference signal and downlink transmission.

[0042] [Figure 8] Another schematic diagram illustrating a CSI reporting method according to one embodiment of the present disclosure.

[0043] [Figure 9]Another schematic diagram illustrating a CSI reporting method according to one embodiment of the present disclosure.

[0044] [Figure 10] Another schematic diagram illustrating a CSI reporting method according to one embodiment of the present disclosure.

[0045] [Figure 11] Another schematic diagram illustrating a CSI reporting method according to one embodiment of the present disclosure.

[0046] [Figure 12] Another schematic diagram illustrating a CSI reporting method according to one embodiment of the present disclosure.

[0047] [Figure 13] Another schematic diagram illustrating a CSI reporting method according to one embodiment of the present disclosure.

[0048] [Figure 14] Another schematic diagram illustrating a CSI reporting method according to one embodiment of the present disclosure.

[0049] [Figure 15] Another schematic diagram illustrating a CSI reporting method according to one embodiment of the present disclosure.

[0050] [Figure 16] Another schematic diagram illustrating a CSI reporting method according to one embodiment of the present disclosure.

[0051] [Figure 17] Another schematic diagram illustrating a CSI reporting method according to one embodiment of the present disclosure.

[0052] [Figure 18] Another schematic diagram illustrating a CSI reporting method according to one embodiment of the present disclosure.

[0053] [Figure 19]A block diagram of an apparatus for reporting CSI according to one embodiment of the present disclosure is shown.

[0054] [Figure 20] A block diagram of a device for receiving CSI according to one embodiment of the present disclosure is shown.

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

[0056] [Figure 22] This is a schematic diagram of a terminal device according to one embodiment of the present invention. [Modes for carrying out the invention]

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

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

[0059] The term “network device” refers to a device within a wireless communication network through which terminal devices access the network and receive services from it. A network device can be a base station (BS), an access point (AP), or any other suitable device in a wireless communication network. A BS may be, for example, a Node B (NodeB or NB), an evolved Node B (eNodeB or eNB), or a gNB, CU, DU, RU, remote radio unit (RRU), radio header (RH), remote radio head (RRH), relay, femto, pico, or other low-power node. Further examples of network devices may include multi-standard radio (MSR) radio equipment such as an MSR BS, network controllers such as a radio network controller (RNC) or base station controller (BSC), base transceiver stations (BTS), transmit points, transmit nodes, a central signaling pool or central computing pool for one or more base stations. More generally, however, a network device is configured to enable and / or provide 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. This may represent any suitable device (or group of devices) that is positioned to do so and / or capable of operating in that manner.

[0060] The term “terminal device” refers to any end device that can access and receive services from a wireless communication network. Examples, but not limited to, include mobile terminals, user equipment (UEs), or other appropriate devices. A UE may be, for example, a subscriber station (SS), portable subscriber station, mobile station (MS), or access terminal (AT). Terminal devices may include, but are not limited to, portable computers, image-capturing terminal devices such as digital cameras, gaming terminal devices, music storage and playback devices, mobile phones, cellular phones, smartphones, voice-over-IP (VoIP) phones, wireless local loop phones, tablets, wearable devices, personal digital assistants (PDAs), portable computers, desktop computers, image-capturing terminal devices such as digital cameras, gaming terminal devices, music storage and playback devices, wearable terminal devices, vehicle-mounted wireless terminal devices, wireless endpoints, mobile stations, laptop embedded devices (LEEs), laptop embedded devices (LMEs), USB dongles, smart devices, and wireless customer premises equipment (CPEs). 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 in accordance with one or more communication standards published 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” does not necessarily have to have a “user” in the sense of a human user who owns and / or operates the device in question. 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. Alternatively, a UE may represent a device that is intended for sale to or operated by a human user, but may not initially be associated with a specific human user.

[0062] Terminal devices may support device-to-device (D2D) communication or V2X communication by, for example, implementing the 3GPP® standard for sidelink communication, in which case they may be called D2D communication devices or V2X communication devices.

[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 measurement and transmits the results of such monitoring and / or measurement to another terminal device and / or network equipment. In this case, the terminal device may also be a machine-to-machine (M2M) device, which may be referred to as a machine-type communication (MTC) device in the 3GPP® context. As one particular example, a terminal device may be a UE implementing the 3GPP® Narrowband Internet of Things (NB-IoT) standard. Specific examples of such machines or devices include sensors, measuring devices such as power meters, industrial machinery, or household or personal appliances, such as refrigerators, televisions, and personal wearables such as watches. In other scenarios, a 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, a downlink (DL) transmission refers to transmission from a network device to a terminal device, and an uplink (UL) transmission refers to transmission in the opposite direction.

[0065] References in this specification to “one embodiment,” “a particular embodiment,” or “an exemplary embodiment” indicate that the embodiments described may include certain features, structures, or characteristics, but not all embodiments are required to include those features, structures, or characteristics. Furthermore, such phrases do not necessarily refer to the same embodiment. Moreover, if certain features, structures, or characteristics are described in relation to one embodiment, it is assumed that implementing such features, structures, or characteristics in relation to other embodiments, whether explicitly stated or not, would be within the knowledge of those skilled in the art.

[0066] In this specification, terms such as “first,” “second,” etc., 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 solely to distinguish one element from another. For example, without departing from the scope of the exemplary embodiments, the first element may be called the second element, and similarly, the second element may be called the first element. As used herein, the term “and / or” includes any and all combinations of one or more of the relevant enumerated terms.

[0067] The terms used herein are for the purpose of describing specific embodiments and are not intended to limit the exemplary embodiments. Where used herein, the singular forms “a,” “an,” and “the” are intended to include the plural form unless the context clearly indicates otherwise. Furthermore, it will be understood that the terms “have,” “possess,” “have,” “include,” and / or “contain,” when used herein, specify the existence of the described features, elements, and / or components, but do not exclude the existence 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 meanings as those generally understood by those skilled in the art to which this disclosure pertains.

[0069] Herein, some exemplary embodiments of the present disclosure will be described below with reference to the drawings.

[0070] First, refer to Figure 1. Figure 1 shows 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, for example, network device 101.

[0071] It will be understood that the network device 101 may take 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 also provide radio 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] The network device 101 includes processing circuits, a device-readable medium, interfaces, user interface equipment, auxiliary equipment, a power supply, a power supply circuit, and an antenna. These components are shown as a single box located within a single larger box, and in some cases, include additional boxes within that box.

[0073] However, in practice, the network device 101 may include multiple different physical components that constitute a single illustrated component (for example, the interface may include ports / terminals for connecting wires for wired connections and a wireless front-end circuit for wireless connections). As another example, the network device 101 may be a virtual network node. Similarly, a network node may consist of multiple physically distinct components (for example, NodeB components and RNC components, BTS components and BSC components, etc.), each of which may have its own respective components.

[0074] In certain scenarios where the network device 101 includes multiple distinct components (e.g., BTS and BSC components), one or more of these distinct components may be shared among several network nodes. For example, a single RNC may control multiple nodes B. In such scenarios, each unique NodeB-RNC pair may, in some cases, be considered a single distinct network node. In some embodiments, a network node may be configured to support multiple radio access technologies (RATs). In such embodiments, some components may overlap (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] The network device 101 shown in the exemplary wireless communication network may represent a device comprising a specific combination of hardware components, but other embodiments may include network nodes with different combinations of components. It should be understood that the network device may include any preferred 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 in Figure 1 is described solely for illustrative purposes and does not imply any limitation in the scope of this disclosure. Those skilled in the art will understand 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] Radio channels in a radio access network (RAN) follow the principles of electromagnetic wave propagation. However, in broadband systems using large-scale MIMO antenna technology, it is virtually impossible to derive an analytical closed-form solution for the radio channel link between network devices and terminal equipment. One method for estimating channel coefficients is to use a reference signal (RS) to estimate the channel coefficients of its neighbors.

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

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

[0080] However, as shown in Figure 2, channel conditions can change significantly during this period due to latency (or what is called CSI delay). Preprocessing of downlink transmissions based on these outdated CSIs (e.g., pre-coding) cannot yield the performance gains expected from closed-loop radio optimization.

[0081] First aspect of the embodiment This disclosure provides a method for reporting CSIs.

[0082] Figure 3 is a schematic diagram illustrating a method for reporting CSI according to one embodiment of the present disclosure, with the terminal device side being shown as an example.

[0083] As shown in Figure 3, this method includes the following:

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

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

[0086] 303: The terminal device transmits a CSI at a first time in accordance with the CSI reporting configuration, where the CSI indicates the channel state at least at a second time after the first time.

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

[0088] For example, the first time instance is a time instance in which the CSI is transmitted by a terminal device, and the second time instance is a time instance in which a downlink transmission using the CSI (e.g., pre-coding, modulation, and coding scheme) is transmitted by a network device.

[0089] Therefore, the terminal device receives one or more reference signals to obtain measurement information; acquires a CSI according to the measurement information; transmits the CSI in a first time period according to the CSI reporting configuration, and the CSI indicates the channel state in a second time period at least after the first time period. Thus, the network device can use this CSI to obtain a CSI that matches the channel state in a time instance of downlink transmission.

[0090] In some embodiments, CSI prediction is a method to mitigate performance degradation from CSI feedback delay. Time series prediction is a well-known application area of ​​AI / ML. Neural networks such as RNNs, LSTMs, and transformers offer performance advantages over conventional methods.

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

[0092] In some embodiments, a 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 one or more reference signals and performs a CSI measurement to obtain measurement information. For further details, please refer to the relevant technologies.

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

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

[0095] Y(n+d) is transmitted by the terminal device as a CSI report at time n. That is, the CSI report indicates the channel state at a second time (n+d) that is after the first time (n).

[0096] The example in Figure 4 is merely an illustration, and it should be understood that this disclosure is also applicable to other types of neural networks with different input information that can achieve the objective of CSI prediction. For details of the neural network, such as its structure and parameters, please refer to the relevant technologies.

[0097] Next, some information regarding the reference signal (RS) is provided for reference.

[0098] In NR, an RS report (e.g., a CSI report) consists of RS resources for measurement. Report types can be periodic, semi-permanent, or aperiodic. Different reporting types are composed of different RS types, such as periodic RS, semi-permanent RS, and aperiodic RS.

[0099] Table 1 shows an example of the CSI reporting structure and CSI-RS resource structure. [Table 1]

[0100] Figure 5 is a schematic diagram showing the reference signal and downlink transmission. As shown in Figure 5, for example, for periodic CSI reporting, the CSI report in time instance n is derived from RS1 and RS2. When reporting in time instance n, the estimated CSI is delayed by at least d1 + d2, where d1 is the CSI processing delay on the terminal equipment side (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 using CSI feedback.

[0101] In some embodiments, during the training phase of the AI / ML module, the time interval between two RSs (e.g., 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 channel knowledge and relationships in these time instances before and after time instance n. The rate of channel change in the time domain significantly impacts CSI prediction, which is primarily related to the speed at which terminal equipment moves relative to its serving base station. Fast-changing channels require shorter RS ​​intervals than slow-changing channels. The prediction step is also closely related to the number of RSs for prediction processing and the duration of all RSs.

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

[0103] Figure 6 is another schematic diagram showing the reference signal and downlink transmission. As shown in Figure 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 the reference signal and downlink transmission. As shown in Figure 7, for example, when a non-periodic CSI-RS is configured, CSI prediction is difficult to perform without additional information. A scenario using one RS is possible if the terminal equipment has the ability to detect its direction of movement to its serving BS.

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

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

[0107] As shown in Figure 8, this method includes the following:

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

[0109] 802: The terminal device receives one or more reference signals and acquires measurement information.

[0110] 803: The terminal device acquires channel status information according to the measurement information.

[0111] 804: The terminal device transmits a CSI at a first time in accordance with the CSI reporting configuration, where the CSI indicates the channel state at least at a second time after the first time.

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

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

[0114] As shown in Figure 9, this method includes the following:

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

[0116] As shown in Figure 9, terminal equipment can receive first predictive accuracy information from a network device to indicate one or more predictive accuracy requirements. For example, the first predictive instruction and / or first predictive accuracy information is transmitted via at least one of the following: Radio Resource Control (RRC), Media Access Control (MAC) control element (CE), or Downlink Control Information (DCI). However, it is not limited to this, and the information may be carried via, for example, a Physical Downlink Shared Channel (PDSCH).

[0117] As shown in Figure 9, terminal equipment can receive first predictive step information from a network device indicating a time interval between a first time and a second time. For example, the first predictive step information is transmitted via at least one of the following: Radio Resource Control (RRC), Media Access Control (MAC) control element (CE), or Downlink Control Information (DCI). However, it is not limited to these, and the information may be carried via, for example, 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, but are not limited to, be transmitted together with the first prediction instruction. For example, the first prediction accuracy information and / or the first prediction step information may each be transmitted in separate messages.

[0119] 902. The terminal device receives one or more reference signals to acquire measurement information.

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

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

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

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

[0124] On the other hand, the prediction steps supported by the AI / ML module also depend on the coherence time of the radio channel. For example, the coherence time is expressed as Ct = 1 / fd, where fd is the Doppler shift.

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

[0126] Terminal devices may exchange their predictive capabilities with network devices, and better performance can be achieved if the CSI latency on both the terminal and network device sides matches the prediction step of the UE capability (for example, via an AI / ML module).

[0127] In some embodiments, the terminal device transmits a request to the network device specifying at least one of the following: a reference signal period, a reference signal interval, a reference signal count, and a mobility instruction.

[0128] Reference signal periodicity or mobility indications are used by network devices to determine the periodic or semi-permanent configuration of one or more reference signals, while reference signal intervals or reference signal number or mobility indications are used by network devices to determine the number and / or location of non-periodic reference signals.

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

[0130] As shown in Figure 10, this method includes the following:

[0131] 1001: The terminal device transmits a request to specify the reference signal period.

[0132] For example, a terminal device selects a preferred RS period for its AI / ML module for CSI prediction. The terminal device then sends an RS period request to the network device. The preferred RS period may be derived according to the estimated channel change rate. Furthermore, the preferred RS period may be related to the AI / ML module's prediction steps and input / output signal characteristics during the training phase.

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

[0134] 1002: The terminal equipment receives the CSI report configuration and / or reference signal resource configuration.

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

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

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

[0138] For example, a CSI-RS based on an RS period request may be transmitted 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 a CSI at a first time according to the CSI reporting configuration, where the CSI indicates the channel state at least at a second time after the first time.

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

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

[0142] As shown in Figure 11, this method includes the following:

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

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

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

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

[0147] 1103. The terminal equipment acquires the CSI according to the measurement information.

[0148] For example, a CSI-RS based on an RS interval request and / or RS count request may be transmitted from the network device. 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 a CSI at a first time in accordance with the CSI reporting configuration, where the CSI indicates the channel state at least at a second time after the first time.

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

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

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

[0153] As shown in Figure 12, this method includes the following:

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

[0155] As shown in Figure 12, terminal equipment can receive first prediction accuracy information and / or first prediction step information from a network device. It should be understood that the first prediction accuracy information and / or first prediction step information may, but are not limited to, be transmitted together with the first prediction instruction. For example, the first prediction accuracy information and / or 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 sends a predictive shutdown request.

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

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

[0160] For example, upon receiving a prediction instruction (possibly including the prediction step and / or prediction accuracy), a terminal device may determine that its prediction performance is insufficient, and the terminal device may send a prediction stop request to a network device, which then sends a prediction stop response.

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

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

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

[0164] As shown in Figure 13, this method includes the following:

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

[0166] As shown in Figure 13, terminal equipment can receive first prediction accuracy information and / or first prediction step information from a network device. It should be understood that the first prediction accuracy information and / or first prediction step information may, but are not limited to, be transmitted together with the first prediction instruction. For example, the first prediction accuracy information and / or first prediction step information may be transmitted in separate messages.

[0167] 1302: The terminal device transmits a request specifying at least one of the following: reference signal period, reference signal interval, number of reference signals, and mobility instruction.

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

[0169] 1304: The network device sends a predictive stop instruction.

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

[0171] For example, when a network device receives an RS interval request from a terminal device, it may not be able to schedule and transmit RS according to the RS interval request. In this case, the network device sends a predictive stop instruction to the terminal device. After receiving the stop instruction, the terminal device does not perform CSI prediction.

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

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

[0174] As shown in Figure 14, this method includes the following:

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

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

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

[0178] 1403: Network devices configure one or more CSI reporting settings and one or more RS resource settings for potential predictive operation.

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

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

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

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

[0183] 1407: The terminal device transmits a CSI at a first time in accordance with the CSI reporting configuration, where the CSI indicates the channel state at least at a second time after the first time.

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

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

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

[0187] As shown in Figure 15, the method includes the following:

[0188] 1501: The terminal device sends a second prediction instruction or prediction request to the network device, the second prediction instruction being used to indicate that the terminal device predicts channel state information for a second time.

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

[0190] For example, a terminal device may detect that its channel change rate is very fast and that a CSI prediction is necessary, and then send a prediction request or instruction to a network device. Alternatively, the terminal device may send a mobility instruction to a network device that has a similar function to a CSI prediction instruction.

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

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

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

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

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

[0196] The embodiments described above are demonstrated by the use of predictive information, but are not limited thereto. For example, reliability information and / or delay information may be used in this disclosure.

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

[0198] As shown in Figure 16, this method includes the following:

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

[0200] For example, a CQI table index in a CSI report or CSI report configuration can indicate whether high reliability is required and may serve as a QoS indicator. Here, the CQI table may be any of "Table 1," "Table 2," or "Table 3" according to 3GPP® TS 38.214 V16.7.0. These three CQI tables are merely examples of the disclosure and should be understood as not being limited thereto.

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

[0202] 1603: The terminal device receives the CSI reporting configuration and / or 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 acquire measurement information.

[0204] 1605: Terminal equipment acquires CSI according to measurement information, in accordance with the CSI reporting configuration and / or activation.

[0205] 1606: The terminal device transmits a CSI at a first time in accordance with the CSI reporting configuration, where the CSI indicates the channel state at least at a second time after the first time.

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

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

[0208] As shown in Figure 17, the method includes the following:

[0209] 1701: Terminal equipment receives CSI reporting capability queries from network devices.

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

[0211] 1703: Terminal equipment and network devices exchange RS period, CSI delay, or predictive 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: Network devices are activated to directly trigger periodic CSI reports through a CSI reporting configuration, and / or to trigger semi-persistent CSI reports through MAC CE or DCI, and / or to trigger aperiodic CSI reports through DCI. These activated CSI reports may include QoS indicators (reliability level indicators) for high reliability.

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

[0215] 1707: The terminal device acquires channel status information according to the measurement information.

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

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

[0218] For example, high reliability is a critical requirement for some applications. This is highly sensitive to performance degradation caused by CSI delays. Such performance losses should also be avoided to ensure reliability requirements.

[0219] As shown in Figure 17, CSI delay or predictive steps are exchanged between the network device and the terminal equipment; CSI predictive capability or high reliability endurance is exchanged between the network device and the terminal equipment. Thus, the network device has some knowledge of the RS periodicity required for high reliability, or it is still based on the requirements of the terminal equipment. The network device activates or schedules CSI reports 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 device knows the potential CSI delay, which is the delay from the time instance of the CSI report to the transmission of downlink data using this CSI. The processing delay for calculating the CSI on the terminal device side is handled by the terminal device itself. Network devices can initiate a query to the terminal device regarding its CSI prediction capability or reliability. The terminal device feeds back its capability accordingly.

[0221] During the query procedure, the network device obtains information on the terminal equipment's CSI predictive capability or high reliability sustain capability, and the terminal equipment obtains information on CSI delay; the network device may obtain the RS periodicity (or RS interval) necessary for high reliability.

[0222] The above information exchange also takes place before high-reliability traffic via request and response procedures. Network devices send CSI reporting configurations or activations (via MAC CE or DCI) to terminal equipment, requesting the terminal equipment to perform relevant CSI reports (periodic, semi-persistent, and aperiodic). Along with this, there are QoS directives indicating the high-reliability requirement.

[0223] Upon receiving this information, the terminal device acquires the CSI, taking into account the CSI delay and QoS requirements (e.g., reliability level indication or indicator). The terminal device reports the CSI at the scheduled reporting timing. This means the terminal device's default behavior is to guarantee QoS (e.g., high reliability) for the next downlink transmission, and CSI prediction becomes an operation dependent on the UE's implementation or capabilities.

[0224] In the CSI acquisition process, terminal equipment may use its AI / ML module to perform CSI measurement and prediction based on QoS level requirements (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 referring to a CQI table index in a CSI report or CSI report configuration. The CQI table may be "Table 1," "Table 2," or "Table 3" in accordance with 3GPP® TS 38.214 V16.7.0. These three CQI tables are merely examples of the disclosure, and the disclosure is not limited thereto.

[0226] In the terminal capability query procedure, AI / ML for CSI measurement may be queried and reported. In the 1704 CSI reporting configuration, 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 the CSI measurement and / or perform CSI prediction according to its determination.

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

[0228] As shown in Figure 18, this method includes the following:

[0229] 1801: Terminal equipment receives CSI delay information from network devices, and this CSI delay information is used to instruct the terminal equipment to obtain a second timestamp of the CSI.

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

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

[0232] 1804: The terminal device transmits a CSI at a first time in accordance with the CSI reporting configuration, where the CSI indicates the channel state at a second time, at least after the first time.

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

[0234] For example, terminal equipment always performs CSI reporting using its predictive capabilities for given CSI delay information. Network devices provide CSI delay information in a CSI reporting configuration or otherwise. In the query and response procedure for CSI reporting capability, terminal equipment reports its CSI report with predictive result capability.

[0235] For example, there are procedures for querying CSI reporting capability and / or configuring CSI reporting, through which terminal equipment can obtain CSI delay information. The AI / ML capability of the terminal equipment may be known by network devices. Therefore, the CSI delay information may be sufficient for the AI / ML module to generate accurate CSI reports.

[0236] For each CSI report, the prediction results are applied. In the process of acquiring CSI, terminal devices can use their AI / ML module to perform CSI measurements based on the CSI delay or prediction step. CSI prediction is the default behavior of the AI / ML module.

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

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

[0239] Thus, for example, terminal devices report CSI in a format called differential CSI for CSI@n+n+d. 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 the feedback. In the format above, Part 1 uses 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 Pre-Coding Matrix Indicator (PMI), CSI-RS Resource Indicator (CRI), SS / PBCH Block Resource Indicator (SSBRI), Layer 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 based on the prediction accuracy whether to use CSI@n or CSI@n + differential CSI@n+d, or the network device may determine this by using other feedback or the quality of other signals.

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

[0243] In an additional example, Part 1 may be reported at the reporting timing without a forecast, and Part 2 may be reported at a subsequent reporting timing with a forecast.

[0244] Terminal devices may use the predicted CSI directly and use the same format in their CSI reports. In this example, upon receiving a CSI report, a network device may use the report for data transmission in time instance n+d.

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

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

[0247] Second aspect of the embodiment In this disclosure, a CSI reporting device is provided. This device may be a terminal device 102, or may be configured within a terminal device 102. The same content as in the first aspect of the embodiment is omitted.

[0248] Figure 19 shows a block diagram of apparatus 1900 according to one embodiment of the present disclosure.

[0249] As shown in Figure 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 acquire measurement information; the first processing unit 1902 is configured to acquire CSI according to the measurement information; and the first transmitting unit 1903 is configured to transmit CSI at a first time according to a CSI reporting configuration, the CSI indicating the channel state 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 the following from a network device: a first prediction instruction, first prediction accuracy information, or first prediction step information.

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

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

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

[0254] In some embodiments, the first prediction step information is transmitted via at least one of the following: radio resource control (RRC), media access control (MAC) control element (CE), or downlink control information (DCI).

[0255] In some embodiments, the first transmitting unit 1903 is configured to send a request to a network device to indicate at least one of the following: a reference signal period, a reference signal interval, a reference signal number, or a mobility instruction.

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

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

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

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

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

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

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

[0263] In some embodiments, a first receiving unit 1901 is configured to receive requests for obtaining CSI predictive capability; and a transmitting unit is configured to report capability information relating to CSI predictive capability.

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

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

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

[0267] In some embodiments, the first receiving unit 1901 is configured to receive a reliability level instruction, which is used to instruct the terminal equipment to obtain a CSI for data transmission at a second time in which it can match the reliability level requirement.

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

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

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

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

[0272] This disclosure provides a CSI receiving device. This device may be a network device 101, or may be configured within a network device 101, and the same aspects as in the first aspect are omitted.

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

[0274] As shown in FIG. 20, the apparatus 2000 includes a second transmission unit 2001, a second processing unit 2002, and a second reception unit 2003. The second transmission unit 2001 is configured to transmit one or more reference signals according to a reference signal resource configuration; the second reception unit 2003 is configured to receive CSI at a first time, and the CSI indicates at least a channel state at a second time after the first time.

[0275] In some embodiments, the second transmission unit 2001 is configured to transmit at least one of a first prediction instruction, first prediction accuracy information, and 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 at the second time; the first prediction accuracy information is used to indicate one or more prediction accuracy requirements; 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 instruction and / or the first prediction accuracy information are transmitted via at least one of radio resource control (RRC), medium access control (MAC) control element (CE), or downlink control information (DCI).

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

[0279] In some embodiments, the first prediction step information is transmitted via at least one of radio resource control (RRC), medium access control (MAC) control element (CE), or downlink control information (DCI).

[0280] In some embodiments, the second receiving unit 2003 is configured to receive requests from terminal equipment specifying at least one of the following: a reference signal period, a reference signal interval, a reference signal number, and a mobility instruction.

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

[0282] In some embodiments, a reference signal interval, reference signal number, or mobility indicator is used by a network device to determine a semi-permanent 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 a first prediction instruction, first prediction accuracy information, or first prediction step information is included in the CSI reporting configuration.

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

[0286] In some embodiments, the second receiving unit 2003 is configured to receive a predictive stop request, and the second transmitting unit 2001 is configured to transmit a predictive stop response.

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

[0288] In some embodiments, a second transmitting unit 2001 is configured to transmit a request to acquire CSI predictive capability; and a second receiving unit 2003 is configured to receive capability information relating to CSI predictive capability.

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

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

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

[0292] In some embodiments, the second transmitting unit 2001 is configured to transmit a reliability level instruction, which instructs the terminal equipment to obtain a CSI for data transmission at a second time in which it can match the reliability level requirement.

[0293] In some embodiments, a second transmitting unit 2001 is configured to transmit a request to obtain CSI reporting capability with a reliability level indicator; and a second receiving unit 2003 is configured to receive capability information regarding 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 transmission unit 2001 is configured to transmit CSI delay information, and the CSI delay information is used to instruct the terminal device to obtain the CSI at the second time.

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

[0297] It should be understood that the components included in apparatus 1900 or 2000 correspond to the operations of the above method. Therefore, all operations and features described above with reference to the above figures are equally applicable to the components included in apparatus 1900 or 2000 and have similar effects. For simplicity, details are omitted.

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

[0299] In an embodiment, one or more units can be implemented using software and / or firmware, such as machine-executable instructions stored in a storage medium. In addition to or instead of the machine-executable instructions, some or all of the components included in apparatus 1900 or 2000 can be implemented at least partially by one or more hardware logic components.

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

[0301] Device 1900 or 2000 may be part of a device, but is not limited to it. For example, device 1900 may be terminal device 102, and other parts of terminal device 102, such as the transmitter and receiver, are omitted in Figure 19. As another example, device 2000 may be network device 101, and other parts of network device 101, such as the transmitter and receiver, are omitted in Figure 20.

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

[0303] Third aspect of the embodiment Embodiments of this disclosure provide a communication system, which can be seen in Figure 1, and the same aspects as those of the first aspect embodiment will not be described further here.

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

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

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

[0307] Embodiments of the present disclosure further provide network devices, which may be, for example, base stations. However, the present disclosure is not limited thereto and may include other network devices.

[0308] Figure 21 is a schematic diagram of a network device according to an embodiment of the present disclosure. As shown in Figure 21, the network device 2100 may include a processor 2110 (for example, a central processing unit (CPU)) and a memory 2120, the memory 2120 being coupled to the processor 2110. The memory 2120 may store various data, and may also 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 and perform the method described in the first aspect of the embodiment. For example, the processor 2110 may be configured to perform the following controls: transmit one or more reference signals according to a reference signal resource configuration; and receive a CSI at a first time, where the CSI indicates at least the channel state at a second time after the first time.

[0310] Furthermore, as shown in Figure 21, the network device 2100 may include a transceiver 2140 and an antenna 2150, etc. The functions of the above components are the same as those in related technologies and will not be described further here. Note that the network device 2100 does not necessarily have to include all the parts shown in Figure 21, and may also include parts not shown in Figure 21, and related technologies may be referenced.

[0311] Embodiments of this disclosure further provide terminal devices, but are not limited thereto, and may include other devices.

[0312] Figure 22 is a schematic diagram of a terminal device according to one embodiment of the present disclosure. As shown in Figure 22, the terminal device 2200 may include a processor 2210 and a memory 2220, the memory 2220 which stores data and programs and is connected to the processor 2210. Note that this figure is for illustrative purposes only, and other types of structures may be used to complement or replace this structure to implement telecommunications functions or other functions.

[0313] For example, the processor 2210 may be configured to run 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 acquire measurement information; acquire a CSI according to the measurement information; and control to transmit a CSI at a first time according to a CSI reporting configuration, the CSI indicating at least the channel state at a second time after the first time.

[0314] As shown in Figure 22, the terminal device 2200 may further include a communication module 2230, an input unit 2240, a display 2250, and a power supply 2260. Since the functions of these components are the same as in the prior art, they will not be described further here. It should be noted that the terminal device 2200 does not necessarily have to include all the parts shown in Figure 22, and the above components are not mandatory. Furthermore, the terminal device 2200 may include parts not shown in Figure 22, and may refer to the prior art.

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

[0316] One embodiment of the present disclosure provides a storage medium containing a computer program that, when executed on a terminal device, causes the terminal device to perform the method described above in a first aspect of the embodiment.

[0317] One embodiment of the present disclosure provides a computer program that, when executed on a network device, causes a network device to perform the method described above in the first aspect of the embodiment.

[0318] One embodiment of the present disclosure provides a storage medium containing a computer program that, when executed on a network device, causes a network device to perform the method described above in the first aspect of the embodiment.

[0319] The apparatus and methods described herein may be implemented by hardware or by hardware in combination with software. The disclosure relates to a computer-readable program, which, when executed by a logical device, enables the logical device to execute the apparatus or component described above, or to perform the methods or steps described above. The disclosure also relates to a storage medium for storing the program, such as a hard disk, magnetic disk, CD, DVD, flash memory, etc.

[0320] The methods / apparatus described with reference to embodiments of this 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 procedures in a computer program, or to hardware modules. Such software modules may correspond to the steps shown in the drawings, respectively. Hardware modules may be implemented, for example, by firmwareizing the software modules using a field-programmable gate array (FPGA).

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

[0322] One or more functional blocks and / or one or more combinations of functional blocks in the drawings 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. Alternatively, one or more functional block diagrams and / or one or more combinations of functional block diagrams in the drawings may be implemented as a combination of computing equipment, such as a combination of a DSP and a microprocessor, multiple processors, one or more microprocessors communicatively combined with a DSP, or any other such configuration.

[0323] This disclosure has been set forth above with reference to specific embodiments. However, those skilled in the art will understand that such descriptions are merely illustrative and not intended to limit the scope of protection of the present invention. Various modifications and alterations may be made by those skilled in the art in accordance with the principles of the present invention, and such modifications and alterations fall within the scope of the present invention.

[0324] With regard to implementations including the above embodiments, the following additional information is further disclosed.

[0325] [Note 1] A method for reporting channel status information (CSI): The terminal device receives one or more reference signals and acquires measurement information; The step of obtaining CSI according to the aforementioned measurement information; The process includes the step of transmitting the CSI in a first time period according to the CSI reporting configuration, wherein the CSI indicates the channel state in a second time period at least after the first time period. method. [Note 2] This method further: The terminal device includes the step of receiving at least one of a first prediction instruction, first prediction accuracy information, and first prediction step information from a network device. The method described in Supplementary Note 1. [Note 3] The method according to Supplementary Note 2, wherein the first prediction instruction is used to instruct the terminal device to predict the CSI of the second time; the first prediction accuracy information is used to specify one or more prediction accuracy requirements; and the first prediction step information is used to indicate the time interval between the first time and the second time. [Note 4] The method according to Supplementary 2 or 3, wherein the first prediction instruction and / or the first prediction accuracy information is transmitted via at least one of radio resource control (RRC), media access control (MAC) control element (CE), or downlink control information (DCI). [Note 5] The first prediction step information is scaled according to the subcarrier interval (SCS) as described in any one of Supplementary Notes 2 to 4. [Note 6] The method according to any one of Supplementary Information 2 to 5, wherein the first prediction step information is transmitted via at least one of Radio Resource Control (RRC), Media Access Control (MAC) control element (CE), or Downlink Control Information (DCI). [Note 7] This method further: The terminal device includes the step of transmitting a request to a network device that specifies at least one of the following: a reference signal period, a reference signal interval, or a reference signal count, and / or a mobility instruction. The method described in any one of the supplementary notes 1 through 6. [Note 8] The method according to Supplementary 7, wherein the reference signal periodicity is used by the network device to determine the periodic or semi-permanent configuration of one or more reference signals. [Note 9] The method according to Supplementary 7, wherein the reference signal interval or number of reference signals or mobility indicator is used by the network device to determine the number and / or location of aperiodic reference signals. [Note 10] This method further: The terminal device includes the step of receiving the CSI report configuration and / or reference signal resource configuration from a network device, The method described in any one of the supplementary notes 1 through 9. [Note 11] The CSI reporting configuration includes at least one of a first prediction instruction, first prediction accuracy information, or first prediction step information; The reference signal resource configuration is determined by the network device according to at least one of the following: reference signal period, reference signal interval, number of reference signals, or mobility indication. The method described in Supplementary Note 10. [Note 12] This method further: The terminal device determines that CSI prediction is not supported; The steps include: sending a predictive shutdown request to a network device using the aforementioned terminal device; The terminal device includes the step of receiving a predictive stop response from the network device, The method described in any one of the supplementary notes 1 through 11. [Note 13] The method further: The terminal device includes the step of receiving a predictive stop instruction from a network device, The method described in any one of the supplementary notes 1 through 11. [Note 14] This method further: The terminal device receives a capability query from a network device; The terminal device reports a capability response to the network device, The method described in any one of the supplementary notes 1 through 13. [Note 15] The method according to Supplementary 14, wherein the capability query is used to obtain at least one of the following: 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, or CSI measurement or CSI prediction for a certain CSI delay. [Note 16] The method according to Supplement 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. [Note 17] This method further: The terminal device includes the step of receiving activation information from the network device to trigger periodic CSI reporting through a CSI reporting configuration and / or semi-persistent CSI reporting through MAC CE or DCI and / or non-periodic CSI reporting through DCI, The method described in any one of the supplementary notes 14 to 16. [Note 18] The method according to Supplement 17, wherein information for enabling or disabling AI / ML is included in the CSI reporting configuration. [Note 19] This method further: The step includes the terminal device transmitting a second prediction instruction to a network device, the second prediction instruction being used to indicate that the terminal device predicts the CSI for the second time. The method described in Supplementary Note 1. [Note 20] This method further: The process includes the step of transmitting at least one of the following to the network device via the terminal device: second prediction accuracy information, second prediction step information, reference signal configuration ID, reference signal interval, number of reference signals, and mobility instruction. The method described in any one of the supplementary notes 1 through 19. [Note 21] The method according to Appendix 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, the reference signal configuration ID, the reference signal interval, the number of reference signals, or the mobility instruction. [Note 22] This method further: The method according to Supplementary 1, comprising the step of receiving a reliability level instruction from a network device by the terminal device, the reliability level instruction being used to instruct the terminal device to obtain a CSI for data transmission in the second time that can meet the reliability level requirement. [Note 23] This method further: The terminal device receives a request from the network device to obtain CSI reporting capability, including a reliability level indicator; The terminal device includes the step of reporting 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. [Note 24] This method further: The terminal device includes the step of receiving the CSI report configuration and / or reference signal resource configuration from the network device, the CSI report configuration including CSI delay information. The method described in Supplementary Notes 1 or 23. [Note 25] The CSI delay information is scaled based on the subcarrier interval (SCS) as described in any one of the appendices 1 through 24. [Note 26] This method further: The process includes the step of receiving CSI delay information from a network device using the terminal device, wherein the CSI delay information is used to instruct the terminal device to acquire the CSI of the second time. The method described in Supplementary Note 1. [Note 27] The method according to any one of the Supplementary Notes 1 to 26, wherein a differential CSI is used to indicate the channel state at the second time. [Note 28] A method for receiving channel status information (CSI): The steps include: transmitting one or more reference signals by a network device according to a reference signal resource configuration; The process includes a step of receiving a CSI in a first time period, wherein the CSI indicates at least a channel state in a second time period that is later than the first time period. method. [Note 29] This method further: The step includes transmitting at least one of a first prediction instruction, first prediction accuracy information, and first prediction step information to a terminal device via the network device, The method described in Supplementary Note 27. [Note 30] The method according to Supplementary Note 29, wherein the first prediction instruction is used to instruct the terminal device to predict the CSI of the second time; the first prediction accuracy information is used to specify one or more prediction accuracy requirements; and the first prediction step information is used to indicate the time interval between the first time and the second time. [Note 31] The method according to Appendix 29 or 30, wherein the first prediction instruction and / or the first prediction accuracy information is transmitted via at least one of radio resource control (RRC), media access control (MAC) control element (CE), or downlink control information (DCI). [Note 32] The method according to any one of the appendices 29 to 31, wherein the first prediction step information is scaled based on the subcarrier interval (SCS). [Note 33] The method according to any one of Supplementary Information 29 to 32, wherein the first prediction step information is transmitted via at least one of Radio Resource Control (RRC), Media Access Control (MAC) control element (CE), or Downlink Control Information (DCI). [Note 34] This method further: The step includes receiving a request from the terminal equipment via the network device to specify at least one of the following: reference signal period, reference signal interval, number of reference signals, and mobility instruction. The method described in any one of the supplementary notes 28 to 33. [Note 35] The method according to Appendix 34, wherein the reference signal period is used by the network device to determine the periodic or semi-permanent configuration of one or more reference signals. [Note 36] The method according to Supplementary Note 34, wherein the reference signal interval or number of reference signals or mobility indicator is used by the network device to determine the number and / or location of non-periodic reference signals. [Note 37] The method further: The step includes transmitting the CSI reporting configuration and / or reference signal resource configuration to the terminal equipment via the network device, The method described in any one of the supplementary notes 28 to 36. [Note 38] The CSI reporting configuration includes at least one of a first prediction instruction, first prediction accuracy information, or first prediction step information; The reference signal resource configuration is determined by the network device according to at least one of the following: reference signal period, reference signal interval, number of reference signals, or mobility indication. The method described in Supplementary Note 37. [Note 39] This method further: The step of receiving a predictive shutdown request from the terminal equipment via the aforementioned network device; The step includes transmitting a predictive stop response to the terminal equipment via the network device, The method described in any one of the supplementary notes 28 to 38. [Note 40] This method further: The step of determining by the network device that CSI prediction is not supported; The step includes transmitting a predictive stop instruction to the terminal equipment via the network device, The method described in any one of the supplementary notes 28 to 38. [Note 41] This method further: The step of sending a capability query to the terminal device via the aforementioned network device; The step of receiving a capability response transmitted from the terminal equipment by the network device, The method described in any one of the supplementary notes 28 to 40. [Note 42] The method according to Supplementary 41, wherein the capability query is used to obtain at least one of the following: 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, or CSI measurement or CSI prediction for a certain CSI delay. [Note 43] The method according to Supplementary Notes 41 or 42, wherein AI / ML-related information is included in the capability query and / or AI / ML-related information is included in the capability response. [Note 44] This method further: The terminal device includes the step of receiving activation information from the network device to trigger periodic CSI reporting through a CSI reporting configuration and / or semi-persistent CSI reporting through MAC CE or DCI and / or non-periodic CSI reporting through DCI, The method described in any one of the supplementary notes 41 to 43. [Note 45] 45. The method according to Supplement 44, wherein information for enabling or disabling AI / ML is included in the CSI reporting configuration. [Note 46] This method further: The process includes the step of receiving a second prediction instruction from a terminal device via the network device, the second prediction instruction being used to indicate that the terminal device predicts the CSI for the second time. The method described in Supplementary Note 28. [Note 47] This method further: The step includes receiving at least one of the following from the network device: second prediction accuracy information, second prediction step information, reference signal configuration ID, reference signal interval, reference signal number, or mobility instruction. The method described in Supplementary Notes 28 or 46. [Note 48] The method according to Appendix 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, the reference signal configuration ID, the reference signal interval, the number of reference signals, or the mobility instruction. [Note 49] The method further: The step includes transmitting a reliability level instruction to the terminal equipment via the network device, the reliability level instruction being used to instruct the terminal equipment to acquire the CSI for the second time. The method described in Supplementary Note 28. [Note 50] This method further: The steps include: transmitting a request to the terminal device via the network device to obtain CSI reporting capability, including a reliability level indicator; The network device includes the step of receiving capability information relating to the CSI reporting capability, including a reliability level indicator, from the terminal equipment. The method described in Supplementary Notes 28 or 49. [Note 51] This method further: The step includes transmitting the CSI reporting configuration and / or reference signal resource configuration to the terminal equipment via the network device, wherein the CSI reporting configuration includes CSI delay information. The method described in Supplementary Note 50. [Note 52] This method further: The step includes transmitting CSI delay information to the terminal device via the network device, the CSI delay information being used to instruct the terminal device to acquire the CSI of the second time. The method described in Supplementary Note 28. [Note 53] The method according to any one of the appendices 28 to 52, wherein CSI delay information is scaled based on the subcarrier interval (SCS). [Note 54] The method according to any one of the appendices 28 to 53, wherein a differential CSI is used to indicate the channel state at the second time. [Note 55] A terminal device comprising a processor and memory, wherein the memory includes instructions executable by the processor, and thereby the terminal device operates to perform the method described in any one of the Supplementary Items 1 to 27. [Note 56] A network device comprising a processor and memory, wherein the memory includes instructions executable by the processor, and thereby the network device operates to perform the method described in any one of the appendices 28 to 54. [Note 57] A computer program product that is stored in tangible form on a computer-readable storage medium and, when executed on the processor of a terminal device, includes instructions that cause an external terminal device to perform the method described in any one of the appendices 1 to 27. [Note 58] A computer program product that, when stored in tangible form on a computer-readable storage medium and executed on the processor of a network device, includes instructions that cause the network device to perform the method described in any one of the appendices 28 to 54.

[0326] With regard to embodiments including the above examples, the following additional information is disclosed. (Note 1) A device for reporting channel status information (CSI): A first receiving unit configured to receive one or more reference signals and acquire measurement information; A first processing unit configured to acquire CSI according to the aforementioned measurement information; A first transmitting unit configured to transmit the CSI at a first time according to a CSI reporting configuration, wherein the CSI includes at least the channel state at a second time after the first time, Device. (Note 2) The first receiving unit is configured to receive at least one of a first prediction instruction, first prediction accuracy information, or first prediction step information; The apparatus as described in Appendix 1, wherein the first prediction instruction is used to instruct a terminal device to predict the CSI of the second time; the first prediction accuracy information is used to specify one or more prediction accuracy requirements; and the first prediction step information is used to represent the time interval between the first time and the second time. (Note 3) The apparatus as described in Appendix 2, wherein the first prediction instruction, the first prediction step information, or the first prediction accuracy information is transmitted via at least one of radio resource control (RRC), media access control (MAC) control element (CE), or downlink control information (DCI). (Note 4) The apparatus described in Appendix 2, wherein the first prediction step information is scaled based on the subcarrier spacing (SCS). (Note 5) The first transmitting unit is configured to transmit a request for at least one of the following: a reference signal period, a reference signal interval, a reference signal number, or a mobility instruction; The apparatus as described in Appendix 1, wherein the reference signal period and / or mobility indicator is used by the network device to determine the periodic or semi-permanent configuration of one or more reference signals; and the reference signal interval and / or number of reference signals and / or mobility indicator is used by the network device to determine the number and / or location of non-periodic reference signals. (Note 6) The first receiving unit is configured to receive the CSI report configuration and / or reference signal resource configuration; The CSI reporting configuration includes at least one of a first prediction instruction, first prediction accuracy information, or first prediction step information; the reference signal resource configuration is determined by the network device according to at least one of a reference signal period, reference signal interval, number of reference signals, or mobility instruction. The apparatus described in Appendix 1. (Note 7) The first processing unit is configured to determine that CSI prediction is not supported; The first transmitting unit is configured to transmit a predictive stop request; the first receiving unit is configured to receive a predictive stop response. The apparatus described in Appendix 1. (Note 8) The apparatus described in Appendix 1, wherein the first receiving unit is configured to receive a predictive stop instruction. (Note 9) The first receiving unit is configured to receive capability queries; the first transmitting unit is configured to report capability responses; The capability query is used to obtain at least one of the following: CSI prediction capability, AI / ML capability for CSI measurement or CSI prediction, CSI measurement or CSI prediction for a certain QoS or reliability level, CSI measurement or CSI prediction for a certain QoS or reliability level via AI / ML, or CSI measurement or CSI prediction for a certain CSI delay. The apparatus described in Appendix 1. (Note 10) The apparatus as described in Appendix 1, wherein the first transmitting unit is configured to transmit a second prediction instruction; the second prediction instruction is used to indicate that the terminal equipment predicts the CSI of the second time. (Note 11) The first transmission unit is configured to transmit at least one of the following: second prediction accuracy information, second prediction step information, reference signal configuration ID, reference signal interval, reference signal number, or mobility instruction; The reference signal resource configuration is determined by the network device according to at least one of the following: 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 instruction. The apparatus described in Appendix 1. (Note 12) The apparatus as described in Appendix 1, wherein the first receiving unit is configured to receive a reliability level indicator, the reliability level indicator being used to instruct the terminal equipment to obtain a CSI for data transmission at a second time that can meet the reliability level requirement. (Note 13) The apparatus as described in Appendix 12, wherein the first receiving unit is configured to receive requests for obtaining CSI reporting capability having a reliability level indicator, and the first transmitting unit is configured to report capability information relating to the CSI reporting capability having a reliability level indicator. (Note 14) The apparatus described in Appendix 13, wherein the first receiving unit is configured to receive the CSI reporting configuration and / or reference signal resource configuration, and the CSI delay information is included in the CSI reporting configuration. (Note 15) The apparatus as described in Appendix 1, wherein the first receiving unit is configured to receive CSI delay information; the CSI delay information is used to instruct the terminal device to acquire the CSI of the second time. (Note 16) The apparatus as described in Appendix 1, wherein differential CSI is used to indicate the channel state at the second time. (Note 17) A device for receiving channel status information (CSI): A second transmitting unit configured to transmit one or more reference signals according to a reference signal resource configuration; A second receiving unit configured to receive a CSI in a first time period, wherein the CSI indicates at least the channel state of a second time period after the first time period, the second receiving unit comprising: Device. (Note 18) The second transmission unit is configured to transmit at least one of the following: a first prediction instruction, first prediction accuracy information, or first prediction step information; The first prediction instruction is used to instruct the terminal device to predict the CSI of the second time; the first prediction accuracy information is used to specify one or more prediction accuracy requirements; and the first prediction step information is used to represent the time interval between the first time and the second time. The apparatus described in Appendix 17. (Note 19) The second receiving unit is configured to receive requests for specifying at least one of the following: a reference signal period, a reference signal interval, a reference signal number, or a mobility instruction; The aforementioned reference signal period or mobility indicator is used by the network device to determine the periodic or semi-permanent configuration of one or more reference signals; The aforementioned reference signal interval, number of reference signals, or mobility indication is used by the network device to determine a semi-permanent or aperiodic configuration of one or more reference signals. The apparatus described in Appendix 17. (Note 20) It is a network system: A terminal device configured to receive one or more reference signals to acquire measurement information; acquire a CSI according to the measurement information; and transmit the CSI in a first time according to a CSI reporting configuration; A network device configured to transmit one or more reference signals according to a reference signal resource configuration; and to receive the CSI at a first time, wherein the CSI indicates at least the channel state at a second time after the first time. Network system. [Explanation of Symbols]

[0327] 301 A terminal device receives one or more reference signals to acquire measurement information. 302 Terminal equipment acquires CSI according to measurement information. 303 The terminal device transmits a CSI in a first time period according to the CSI reporting configuration. The CSI indicates the channel state for at least a second time period, after the first time period. 801 First Prediction Instruction 802 One or more reference signals Obtained 803 CSI 804 CSI in the first time period. The CSI indicates at least the channel state in the second time period. 901 First prediction instruction (first prediction accuracy information and / or first prediction step information) 902 One or more reference signals Obtained 903 CSI 904 CSI in the first time period. The CSI indicates at least the channel state in the second time period. 1001 Request to specify the reference signal period 1002 CSI Reporting Configuration and / or Reference Signal Resource Configuration 1003 One or more reference signals Obtained 1004 CSI 1005 CSI in the first time period. The CSI indicates at least the channel state in the second time period. 1101 Request to specify the reference signal interval and / or the number of reference signals. 1102 One or more reference signals 1103 CSI obtained 1104 CSI in the first time period. The CSI indicates at least the channel state in the second time period. 1201 First prediction instruction (first prediction accuracy information and / or first prediction step information) 1202 CSI prediction is not supported. 1203 Prediction stop request 1204 Predictive Stop Response 1301 First prediction instruction (first prediction accuracy information and / or first prediction step information) 1302 Request specifying at least one of the following: reference signal period, reference signal interval, number of reference signals, and mobility indication. 1303 CSI prediction is not supported. 1304 Predictive stop instruction 1401 CSI Predictive Capability Acquisition Request 1402 CSI Predictive Capability Information 1403 CSI reporting settings and / or RS resource configuration for potential predictive operation Request for 1404 CSI reporting configuration ID and / or RS resource configuration ID and / or reference signal interval. 1405 One or more reference signals Obtained 1406 CSI 1407 CSI in the first time period. The CSI indicates at least the channel state in the second time period. 1501 Second prediction instruction (second prediction accuracy information, second prediction step information, reference signal configuration ID, reference signal interval, number of reference signals, or mobility instruction) 1502 One or more reference signals Obtained 1503 CSI 1504 CSI in the first time period. The CSI indicates at least the channel state in the second time period. 1601 Requirement to obtain CSI reporting capability with reliability level indicators. 1602 Capability Information Regarding CSI Reporting Capability with Reliability Level Indicators 1603 CSI Reporting Configuration and / or Reference Signal Resource Configuration 1604 One or more reference signals Obtained 1605 CSI 1606 CSI in the first time period. The CSI indicates at least the channel state in the second time period. 1701 CSI Reporting Capability Inquiry 1702 CSI Capability Response 1703 RS period, CSI delay, or predictive accuracy exchange 1704 CSI Reporting Configuration and / or Reference Signal Resource Configuration 1705 CSI Reporting Activation 1706 One or more reference signals Obtained 1707 CSI 1708 CSI in the first time period. CSI indicates the channel state in at least the second time period. 1801 CSI Delay Information 1802 One or more reference signals 1803 CSI obtained 1804 CSI in the first time period. CSI indicates the channel state in at least the second time period.

Claims

1. A device for reporting channel status information (CSI): A first receiving unit that receives signals from the RRC layer, including the CSI reporting configuration and the reference signal resource configuration; A first processing unit that acquires CSI according to measurement information acquired in response to one or more reference signals received by the first receiving unit; The system includes a first transmitting unit that transmits the CSI in a first time in accordance with the CSI reporting configuration, The CSI indicates at least the channel state at a second time after the first time, The CSI report configuration includes at least one of a first prediction instruction or first prediction step information; The aforementioned reference signal resource configuration is determined by a network device according to at least one of the following: reference signal period, reference signal interval, or number of reference signals.

2. The first prediction instruction is used to instruct the terminal device to predict the CSI of the second time; The apparatus according to claim 1, wherein the first prediction step information is used to represent a time interval between the first time and the second time.

3. The apparatus according to claim 2, wherein the first prediction step information is scaled based on the subcarrier spacing (SCS).

4. The first transmitting unit transmits a request to indicate at least one of the reference signal period, the reference signal interval, or the number of reference signals; The apparatus according to claim 1, wherein the reference signal period is used by the network device to determine a periodic or semi-permanent configuration of the one or more reference signals; and the reference signal interval and / or the number of reference signals is used by the network device to determine the number and / or location of non-periodic reference signals.

5. The first processing unit is configured to determine that CSI prediction is not supported; The first transmitting unit is configured to transmit a predictive stop request; the first receiving unit is configured to receive a predictive stop response. The apparatus according to claim 1.

6. The apparatus according to claim 1, wherein the first receiving unit is configured to receive a predictive stop instruction.

7. The first receiving unit is configured to receive capability queries; the first transmitting unit is configured to report capability responses; The capability query is used to obtain at least one of the following: CSI prediction capability, AI / ML capability for CSI measurement or CSI prediction, CSI measurement or CSI prediction for a certain QoS or reliability level, CSI measurement or CSI prediction for a certain QoS or reliability level via AI / ML, or CSI measurement or CSI prediction for a certain CSI delay. The apparatus according to claim 1.

8. The apparatus according to claim 1, wherein the first transmitting unit is configured to transmit a second prediction instruction; the second prediction instruction is used to indicate that a terminal device predicts the CSI of the second time.

9. The first transmission unit is configured to transmit at least one of the following: second prediction accuracy information, second prediction step information, reference signal configuration ID, reference signal interval, reference signal number, or mobility instruction; The reference signal resource configuration is determined by the network device according to at least one of the following: 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 instruction. The apparatus according to claim 1.

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

11. The apparatus according to claim 10, wherein the first receiving unit is configured to receive requests for obtaining CSI reporting capability having a reliability level indicator, and the first transmitting unit is configured to report capability information relating to the CSI reporting capability having a reliability level indicator.

12. The apparatus according to claim 11, wherein the first receiving unit is configured to receive the CSI reporting configuration and / or the reference signal resource configuration, and the CSI delay information is included in the CSI reporting configuration.

13. The apparatus according to claim 1, wherein the first receiving unit is configured to receive CSI delay information; the CSI delay information is used to instruct a terminal device to acquire the CSI of the second time.

14. The apparatus according to claim 1, wherein differential CSI is used to indicate the channel state at the second time.

15. A device for receiving channel status information (CSI): A second transmitting unit that transmits signals of the RRC layer, including a CSI reporting configuration and a reference signal resource configuration, and transmits one or more reference signals according to the reference signal resource configuration; It comprises a second receiving unit configured to receive CSI in a first time period, The CSI indicates at least the channel state at a second time after the first time, The CSI report configuration includes at least one of a first prediction instruction or first prediction step information; The aforementioned reference signal resource configuration is determined by a network device according to at least one of the following: reference signal period, reference signal interval, or number of reference signals.

16. The first prediction instruction is used to instruct the terminal device to predict the CSI of the second time; The first prediction step information is used to represent the time interval between the first time and the second time. The apparatus according to claim 15.

17. The second receiving unit receives a request to specify at least one of the reference signal period, the reference signal interval, or the number of reference signals; The aforementioned reference signal period is used by the network device to determine the periodic or semi-permanent configuration of one or more reference signals; The reference signal interval or the number of reference signals is used by the network device to determine the semi-permanent or aperiodic configuration of the one or more reference signals. The apparatus according to claim 15.

18. It is a network system: A network device that transmits signals of the RRC layer, including a CSI reporting configuration and a reference signal resource configuration, and transmits one or more reference signals according to the reference signal resource configuration, A terminal device that receives signals from the RRC layer, receives one or more reference signals to acquire measurement information, acquires a CSI according to the measurement information, and transmits the CSI in a first time according to the CSI reporting configuration, The CSI report configuration includes at least one of a first prediction instruction or first prediction step information, The aforementioned reference signal resource configuration is determined by the network device according to at least one of the following: reference signal period, reference signal interval, or number of reference signals. The CSI indicates at least the channel state at a second time after the first time, Network system.

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