Communication method and apparatus, storage medium, and program product

Abstract

Provided are a communication method and apparatus, a storage medium, and a program product. The communication method comprises: sending first indication information, which is configured to indicate parameter requirements for a reference signal for channel state prediction; receiving reference signal configuration information, and receiving the reference signal on the basis of the reference signal configuration information, which is determined on the basis of the parameter requirements; predicting a channel state on the basis of the reference signal to obtain a predicted channel state; and sending the predicted channel state to a second node.

Description

Communication methods and devices, storage media and software products

[0001] This disclosure claims priority to Chinese patent application No. 202410708922.1, filed on May 31, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This disclosure relates to the field of communication technology, and in particular to a communication method and apparatus, storage medium and program product. Background Technology

[0003] To improve the performance of data transmission in a communication system, the terminal measures a reference signal to predict the channel state at a future time and reports the predicted channel state to the base station. This reduces the time delay between the predicted channel state and the time the base station transmits data, allowing the base station to adapt the data transmission strategy based on the predicted channel state reported by the terminal to the channel state at the data transmission time. Summary of the Invention

[0004] In a first aspect, embodiments of this disclosure provide a communication method executed by a first node. The communication method includes:

[0005] Send a first indication message, which is used to indicate the parameter requirements of the predicted channel state for the reference signal;

[0006] Receive reference signal configuration information, and receive reference signals according to the reference signal configuration information; the reference signal configuration information is determined based on parameter requirements;

[0007] The predicted channel state is obtained by predicting the channel state based on the reference signal;

[0008] Send the predicted channel state to the second node.

[0009] Secondly, embodiments of this disclosure provide a communication method executed by a second node. The communication method includes:

[0010] Receive first indication information, which is used to indicate the parameter requirements of the predicted channel state for the reference signal;

[0011] Send reference signal configuration information, and send reference signals based on the reference signal configuration information; the reference signal configuration information is determined based on parameter requirements;

[0012] The predicted channel state is received, and the predicted channel state is obtained based on the reference signal.

[0013] Thirdly, embodiments of this disclosure provide a communication device executed by a first node. The communication device includes: a transmitting unit, a receiving unit, and a processing unit;

[0014] The transmitting unit is used to transmit first indication information, which is used to indicate the parameter requirements of the predicted channel state for the reference signal;

[0015] The receiving unit is used to receive reference signal configuration information and receive reference signals according to the reference signal configuration information; the reference signal configuration information is determined based on parameter requirements.

[0016] The processing unit is used to predict the channel state based on the reference signal and obtain the predicted channel state.

[0017] The transmitting unit is also used to transmit the predicted channel state to the second node.

[0018] Fourthly, embodiments of this disclosure provide a communication device executed by a second node. The communication device includes: a receiving unit and a transmitting unit;

[0019] The receiving unit is configured to receive first indication information, which indicates the parameter requirements of the predicted channel state for the reference signal.

[0020] The transmitting unit is used to transmit reference signal configuration information and transmit reference signals based on the reference signal configuration information; the reference signal configuration information is determined based on parameter requirements.

[0021] The receiving unit is also used to receive the predicted channel state, which is predicted based on the reference signal.

[0022] Fifthly, embodiments of this disclosure provide a communication device, including: a processor and a memory; the memory stores processor-executable instructions; when the processor is configured to execute the instructions, the communication device implements the method provided according to the first or second aspect above.

[0023] In a sixth aspect, embodiments of this disclosure provide a computer-readable storage medium that stores computer instructions that, when executed on a computer, cause the computer to perform the method provided according to the first or second aspect.

[0024] In a seventh aspect, embodiments of this disclosure provide a computer program product comprising computer instructions that, when executed on a computer, cause the computer to perform the method provided according to the first or second aspect. Attached Figure Description

[0025] The accompanying drawings are provided to further understand the technical solutions of this disclosure and constitute a part of the specification. They are used together with the embodiments of this disclosure to explain the technical solutions of this disclosure and do not constitute a limitation on the technical solutions of this disclosure.

[0026] Figure 1 is a schematic diagram of the structure of a communication system according to some embodiments.

[0027] Figure 2 is a flowchart illustrating a communication method according to some embodiments.

[0028] Figure 3 is a schematic diagram of a time interval according to some embodiments.

[0029] Figure 4 is a flowchart illustrating another communication method according to some embodiments.

[0030] Figure 5 is a schematic diagram of the composition of a communication device according to some embodiments.

[0031] Figure 6 is a schematic diagram of the composition of another communication device according to some embodiments.

[0032] Figure 7 is a schematic diagram of the structure of a communication device according to some embodiments. Detailed Implementation

[0033] The technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0034] Unless the context otherwise requires, throughout the specification and claims, the term "comprise" and other forms such as the third-person singular "comprises" and the present participle "comprising" are interpreted as open-ended and encompassing, meaning "including, but not limited to." In the description of the specification, terms such as "one embodiment," "some embodiments," "exemplary embodiments," "example," "specific example," or "some examples" are intended to indicate that a particular feature, structure, material, or characteristic associated with that embodiment or example is included in at least one embodiment or example of this disclosure. The illustrative representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics mentioned may be included in any suitable manner in any one or more embodiments or examples.

[0035] The terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this disclosure, unless otherwise stated, "a plurality of" means two or more.

[0036] In this disclosure, expressions such as "exemplarily" or "for example" are used to indicate that they are examples, illustrations, or descriptions. Any embodiment or design described as "exemplarily" or "for example" in this disclosure should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of expressions such as "exemplarily" or "for example" is intended to present the relevant concepts in a detailed manner.

[0037] In addition, the use of “based on” implies openness and inclusivity, because processes, steps, calculations or other actions “based on” one or more of the stated conditions or values ​​may in practice be based on additional conditions or values ​​beyond those stated.

[0038] The base station transmits a reference signal; the terminal receives and measures the reference signal, determines the channel state information from the base station to the terminal, and reports the channel state information to the base station; the base station receives the channel state information reported by the terminal. The base station determines a data transmission strategy based on the channel state represented by the received channel state information and transmits data based on the data transmission strategy to improve data transmission efficiency. Since the wireless channel is a time-varying channel, there is a time delay between the time the base station transmits the reference signal and the time the base station transmits data. During this period, the wireless channel changes, and the wireless channel state at the time the base station transmits data is no longer the same as the wireless channel state at the time the base station transmitted the reference signal. The data transmission strategy determined based on the channel state at the time the terminal reports the reference signal transmission is no longer suitable for the channel state at the time of data transmission, resulting in poor data transmission performance of the communication system. To improve the data transmission performance of the communication system, the terminal measures the reference signal, predicts the channel state at future times, and reports the predicted channel state to the base station to reduce the time delay between the predicted channel state and the time the base station transmits data. This allows the base station to adapt the data transmission strategy determined based on the predicted channel state reported by the terminal to the channel state at the time of data transmission. However, the reliability of current terminal-predicted channel states is low, leading to poor data transmission performance in communication systems. Improving the reliability of predicted channel states is an urgent problem to be solved.

[0039] Based on this, embodiments of this disclosure provide a communication method and apparatus, a storage medium and a program product. A first node sends a first indication information to indicate the parameter requirements of the predicted channel state for the reference signal, so that the reference signal received by the first node according to the reference signal configuration information meets the parameter requirements for the reference signal, that is, the reference signal received by the first node is what the first node expects, thereby improving the reliability of the received reference signal, and thus improving the reliability of the predicted channel state obtained based on the reference signal, which helps to improve the performance of data transmission in the communication system.

[0040] The embodiments of this disclosure will now be described in conjunction with the accompanying drawings.

[0041] The technical solutions provided in this disclosure can be applied to various mobile communication networks, such as NR mobile communication networks using 5th generation mobile networks (5G), future mobile communication networks (e.g., 6G wireless communication systems), or multiple communication convergence systems, etc. This disclosure does not limit them.

[0042] In this disclosure, the mobile communication network (including but not limited to 3G, 4G, 5G, and future mobile communication networks, such as 6G) may include network-side devices (e.g., including but not limited to base stations) and receiving-side devices (e.g., including but not limited to terminals). It should be understood that, in this example, for instance, in the downlink, the first communication node (also referred to as the first communication node device or first node) may be a base station-side device, and the second communication node (also referred to as the second communication node device or second node) may be a terminal-side device. In some examples, such as in the uplink, the first communication node may also be a terminal-side device, and the second communication node may also be a base station-side device. In some examples, such as in device-to-device communication between the two communication nodes, both the first and second communication nodes may be base stations or terminals. Therefore, whether the first and second nodes are base stations or terminals needs to be determined based on the context.

[0043] Figure 1 is a schematic diagram of a communication system according to some embodiments. As shown in Figure 1, the communication system includes, but is not limited to, a first node 110 and a second node 120. The first node 110 and the second node 120 can transmit and receive wireless signals and perform related interactions.

[0044] In a wireless communication scenario, the first node 110 and the second node 120 communicate via a wireless channel. For example, the first node 110 may be a terminal, and the second node 120 a base station; the terminal and the base station communicate via a wireless channel. Alternatively, the first node 110 may be a terminal, and the second node 120 a wireless router; the wireless router and the terminal communicate via a wireless channel. Another example is that the first node 110 may be a first base station, and the second node 120 a second base station; the first base station and the second base station communicate via a wireless channel. Yet another example is that the first node 110 may be a first terminal, and the second node 120 a second terminal; the first terminal and the second terminal communicate via a wireless channel. Finally, the first node 110 may be a repeater, and the second node 120 a base station; the base station and the repeater communicate via a wireless channel. Finally, the first node 110 may be a terminal, and the second node 120 a repeater; the repeater and the terminal communicate via a wireless channel. For example, node 110 is a first repeater, and node 120 is a second repeater; the first repeater and the second repeater communicate via a wireless channel. Alternatively, node 110 can be a base station, and node 120 a satellite; the satellite and the base station communicate via a wireless channel. Another example: node 110 can be a satellite, and node 120 a base station; the base station and the satellite communicate via a wireless channel. Yet another example: node 110 can be a terminal, and node 120 a satellite; the satellite and the terminal communicate via a wireless channel. Again, node 110 can be a satellite, and node 120 a terminal; the terminal and the satellite communicate via a wireless channel. Finally, node 110 can be ground equipment, and node 120 can be an aircraft; the aircraft and the ground equipment communicate via a wireless channel. Finally, node 110 can be a first aircraft, and node 120 a second aircraft; the first aircraft and the second aircraft communicate via a wireless channel.

[0045] Unless otherwise specified, the terms "first" node, "second" node, "first" method, "second" method, "first" approach, "second" approach, "first" matrix, "second" matrix, "first" part, and "second" part in this disclosure are used for descriptive distinction only and do not represent a sequential or chronological order.

[0046] In this disclosure, the base station can be a base station in Long Term Evolution (LTE), Long Term Evolution Advanced (LTEA), or an evolved Node B (eNB or eNodeB), a base station device in a 5G network, or a base station in a future communication system (such as 6G). The base station can include various macro base stations, micro base stations, home base stations, wireless remote devices, reconfigurable intelligent surfaces (RISS), routers, wireless fidelity (WIFI) devices, or various network-side devices such as primary cells and secondary cells.

[0047] In this disclosure, a terminal is a device with wireless transceiver capabilities that can be deployed on land, including indoors or outdoors; on water (such as on ships); and in the air (such as on airplanes, balloons, and satellites). The terminal can be a mobile phone, tablet computer, computer with wireless transceiver capabilities, virtual reality (VR) terminal, augmented reality (AR) terminal, wireless terminal in industrial control, wireless terminal in self-driving, wireless terminal in remote medical care, wireless terminal in smart grid, wireless terminal in transportation safety, wireless terminal in smart city, wireless terminal in smart home, etc. The embodiments of this disclosure do not limit the application scenarios. The terminal may also be referred to as a user, user equipment, access terminal, UE unit, UE station, mobile station, mobile station, remote station, remote terminal, mobile device, UE terminal, wireless communication device, UE agent, or UE device, etc., and the embodiments of this disclosure do not limit these terms.

[0048] It should be understood that Figure 1 is an exemplary structural diagram, and the number of devices included in the communication system shown in Figure 1 is not limited, for example, the number of first nodes and second nodes is not limited. Furthermore, in addition to the devices shown in Figure 1, the communication system shown in Figure 1 may also include other devices, and this is not limited.

[0049] Next, as shown in Figure 2, which is a flowchart of a communication method according to some embodiments, the method is applied to a first node, which may be the first node 110 shown in Figure 1 above, and the method may include: S101 to S104.

[0050] S101, Send the first instruction message.

[0051] In some embodiments, to improve the reliability of the predicted channel state, the first node sends first indication information to the second node. The first indication information is used to indicate the parameter requirements of the predicted channel state for the reference signal. The second node can be the second node 120 shown in FIG1 above. For ease of description, the following embodiments use the first node as a terminal and the second node as a base station as an example.

[0052] As an example, the above parameters require at least one of the following:

[0053] The time interval of the reference signal;

[0054] Frequency domain spacing of the reference signal;

[0055] The number of ports for the reference signal;

[0056] The number of ports used to carry reference signal resources;

[0057] The number of ports for measuring reference signal resources;

[0058] The number of times the reference signal was transmitted;

[0059] The number of reference signal resources;

[0060] The number of reference signal resource groups;

[0061] The number of reference signal resources in the reference signal resource group;

[0062] Spacing between reference signal resource groups;

[0063] Power bias information of the reference signal;

[0064] Angular spacing between reference signals;

[0065] The angular range between reference signals;

[0066] The mapping relationship between the temporal order of the reference signal and the transmission direction of the reference signal;

[0067] The mapping relationship between the frequency domain order of the reference signal and the transmission direction of the reference signal;

[0068] The mapping relationship between the index number of the reference signal resource and the transmission direction of the reference signal;

[0069] The mapping relationship between the order of reference signal resources in the reference signal configuration information and the transmission direction of the reference signal;

[0070] The desired temporal spacing between reference signal resources;

[0071] The maximum permissible difference between the actual time-domain spacing between reference signal resources and the expected time-domain spacing between reference signal resources;

[0072] The channel quality degradation value corresponding to the difference between the actual time-domain spacing between reference signal resources and the expected time-domain spacing between reference signal resources;

[0073] The maximum permissible difference between the actual time-domain spacing between reference signal resources corresponding to the channel quality degradation value and the expected time-domain spacing between reference signal resources;

[0074] The maximum permissible difference between the actual time-domain location of reference signal resources and the expected time-domain location of reference signal resources;

[0075] The channel quality degradation value corresponding to the difference between the actual time-domain location and the expected time-domain location of the reference signal resources;

[0076] The maximum permissible difference between the actual time-domain location of the reference signal resources corresponding to the channel quality degradation value and the expected time-domain location of the reference signal resources.

[0077] The time interval of the reference signal is explained below.

[0078] The time interval of the aforementioned reference signal refers to the time interval between reference signal transmissions. It should be understood that to predict the channel state at future times, it is necessary to measure reference signals transmitted at multiple times. Different prediction methods have different requirements for the time interval of the reference signals. If the time interval of the reference signals does not match the prediction method, the reliability of the channel state predicted by that method is low. Therefore, the parameter requirements for the predicted channel state can include the time interval of the reference signals to improve the reliability of the predicted channel state. Reference signal resources are used to carry reference signals; the time interval of the reference signal resources represents the time interval of the reference signals. The time interval of the reference signal resources is the time interval between reference signal resources; that is, the time interval between reference signal resources represents the time interval of the reference signals.

[0079] As an example, the time interval of the reference signal includes at least one of the following.

[0080] Milliseconds; using milliseconds to represent time intervals avoids misunderstandings or confusion caused by changes in the communication system's time parameters leading to changes in the communication system's time domain units, thus preventing unreliable channel state predictions due to changes in the communication system's time domain units.

[0081] The time-domain unit of a communication system; representing the time interval using the time-domain unit of a communication system ensures that the time interval of the transmitted reference signal meets the parameter requirements for the reference signal time interval. For example, the time interval can be represented by orthogonal frequency division multiplexing (OFDM) symbols or by time slots. In OFDM-based modulation techniques, the smallest frequency-domain unit is the subcarrier, and the smallest time-domain unit is the OFDM symbol. To facilitate the use of frequency-domain resources, a resource block (RB) is defined, which is defined as a specific number of consecutive subcarriers. A bandwidth part (BWP) is also defined, which is defined as a specific number of consecutive resource blocks on a carrier. To facilitate the use of time-domain resources, a time slot is defined, which is defined as a specific number of consecutive OFDM symbols; a time slot is also a type of time-domain unit.

[0082] The smallest time-domain unit of a communication system; for example, time intervals are represented using OFDM notation. Representing the time interval of a reference signal using the smallest time-domain unit of the communication system allows for accurate expression of the reference signal's time interval, avoiding errors in the transmitted reference signal's time interval or ensuring unreliable control over it. For example, if the reference signal's time interval, as a parameter requirement for the reference signal, is one time slot, there may be multiple ways to represent the reference signal's time intervals, but only one time interval can be used to reliably predict the channel state. Using time slots as the representation of time intervals may result in erroneous transmitted reference signal time intervals. Exemplarily, Figure 3 is a schematic diagram of a time interval according to some embodiments. Referring to Figure 3, one time slot contains 14 OFDM symbols (i.e., OFDM symbols 0-13 in Figure 3). The time interval of the reference signal, which serves as the parameter requirement for the reference signal, is one time slot. There are two time intervals: one with 14 OFDM symbols and the other with 3 OFDM symbols. If the time interval of the reference signal applicable to the method for predicting the channel state is 14 OFDM symbols, while the time interval of the transmitted reference signal is 3 OFDM symbols, then the predicted channel state will be unreliable. Conversely, if the time interval of the reference signal applicable to the method for predicting the channel state is 3 OFDM symbols, while the time interval of the transmitted reference signal is 14 OFDM symbols, then the predicted channel state will be unreliable. The CSI-RS in Figure 3 is the channel state information-reference signal (CSI-RS).

[0083] The time interval of the reference signal; the maximum time interval of the reference signal; the minimum time interval of the reference signal; the maximum and minimum time intervals of the reference signal. It should be understood that the parameter requirements include the time interval of the reference signal, and it is desired that the time interval of the reference signal not exceed or fall below this time interval. The parameter requirements include the minimum time interval of the reference signal, and it is desired that the time interval of the reference signal not fall below the minimum time interval. The parameter requirements include the maximum time interval of the reference signal, and it is desired that the time interval of the reference signal not exceed the maximum time interval. The parameter requirements include both the minimum and maximum time intervals of the reference signal, and it is desired that the time interval of the reference signal not exceed either the minimum or maximum time interval.

[0084] The frequency domain spacing of the reference signal is explained below.

[0085] As an example, the frequency spacing of the reference signal includes at least one of the following.

[0086] Frequency domain units in a communication system; representing frequency spacing using frequency domain units in a communication system ensures that the frequency spacing of the transmitted reference signals meets the parameter requirements. For example, frequency spacing can be represented by subcarriers or resource blocks.

[0087] The smallest frequency domain unit of a communication system; for example, the frequency spacing is represented by subcarriers. Representing the frequency spacing of the reference signal using the smallest frequency domain unit of the communication system allows for accurate expression of the frequency spacing of the reference signal, avoiding errors in the frequency spacing of the transmitted reference signal or ensuring unreliable control of the frequency spacing. For example, a resource block contains 12 subcarriers. The frequency spacing of the reference signal, as a parameter requirement for the reference signal, is one resource block with the following two frequency spacings: one with 12 subcarriers and the other with 3 subcarriers. If the frequency spacing of the reference signal to which the method for predicting the channel state applies is 12 subcarriers, while the frequency spacing of the transmitted reference signal is 3 subcarriers, then the predicted channel state will be unreliable; conversely, if the frequency spacing of the reference signal to which the method for predicting the channel state applies is 3 subcarriers, while the frequency spacing of the transmitted reference signal is 12 subcarriers, then the predicted channel state will also be unreliable.

[0088] Frequency domain spacing of reference signals; minimum frequency domain spacing of reference signals; maximum frequency domain spacing of reference signals; minimum and maximum frequency domain spacing of reference signals. It should be understood that the parameter requirements include the frequency domain spacing of reference signals, and it is desired that the frequency domain spacing of the reference signals not exceed or fall below this frequency domain spacing. The parameter requirements include the minimum frequency domain spacing of reference signals, and it is desired that the frequency domain spacing of the reference signals not be less than the minimum frequency domain spacing. The parameter requirements include the maximum frequency domain spacing of reference signals, and it is desired that the frequency domain spacing of the reference signals not exceed the maximum frequency domain spacing. The parameter requirements include both the minimum and maximum frequency domain spacing of reference signals, and it is desired that the frequency domain spacing of the reference signals not exceed either the minimum or maximum frequency domain spacing.

[0089] The number of ports for the reference signal is explained below.

[0090] As an example, the number of ports for the reference signal includes at least one of the following.

[0091] The parameters specify the number of ports for the reference signal; the minimum number of ports for the reference signal; the maximum number of ports for the reference signal; and both the minimum and maximum number of ports for the reference signal. It should be understood that the parameter requirements include the number of ports for the reference signal resource, and it is desired that the number of ports for the reference signal resource not exceed or fall below this number. The parameter requirements also include the minimum number of ports for the reference signal resource, and it is desired that the number of ports for the reference signal resource not be less than the minimum number of ports. Furthermore, the parameter requirements include both the minimum and maximum number of ports for the reference signal resource, and it is desired that the number of ports for the reference signal resource not exceed the minimum and maximum number of ports, respectively.

[0092] In some embodiments, the port of the reference signal may also have other names, such as the antenna port of the reference signal. The antenna port of the reference signal is used to transmit the reference signal, and the reference signal resource is used to carry the reference signal; the antenna port of the reference signal is mapped to the reference signal resource; the port of the reference signal resource is the antenna port of the reference signal resource, which is the antenna port of the reference signal mapped onto the reference signal resource. The antenna port of the reference signal is also called the port of the reference signal. The number of ports of the reference signal is the same as the number of antenna ports of the reference signal.

[0093] The following explains the number of ports used to carry reference signals.

[0094] As an example, the number of ports of a reference signal resource includes at least one of the following.

[0095] The total number of ports for the reference signal resources.

[0096] In some embodiments, corresponding to multiple transmissions of the reference signal, the parameter requirement includes the total number of ports of the reference signal resources within the measurement range. For example, if the reference signal is transmitted twice on the reference signal resources within the measurement range, once at time T1 and once at time T2, and correspondingly measured twice (i.e., the reference signal transmitted at time T1 is measured once, and the reference signal transmitted at time T2 is measured once), the number of ports of the reference signal transmitted at time T1 on the reference signal resources is P1, and the number of ports of the reference signal transmitted at time T2 on the reference signal resources is P2; the total number of ports of the reference signal resources within the measurement range is the sum of P1 and P2. Generally, if the reference signal is transmitted N times on the reference signal resources within the measurement range, and the nth transmission is at time Tn, and correspondingly measured N times, the number of ports of the reference signal transmitted nth time on the reference signal resources is Pn; the total number of ports of the reference signal resources within the measurement range is the sum of the number of ports of the reference signals transmitted N times. The parameter requirement is the total number of ports of the reference signal resources within the measurement range. The requirement is set based on the total number of ports of the reference signal resources, without losing the flexibility of adjusting the number of reference signal ports for each transmission or the flexibility of adjusting the number of reference signal transmissions. This makes the transmission feasibility of the reference signal stronger and can be transmitted reliably, thereby reliably predicting the channel state.

[0097] As an example, the total number of ports of the reference signal resource includes at least one of the following.

[0098] The parameters specify the total number of ports for the reference signal resources; the minimum total number of ports for the reference signal resources; the maximum total number of ports for the reference signal resources; and both the minimum and maximum total number of ports for the reference signal resources. It should be understood that the parameter requirements include the total number of ports for the reference signal resources within the measurement range, and it is desirable that the total number of ports for the reference signal resources within the measurement range not exceed or fall below this total number of ports. The parameters also specify the minimum total number of ports for the reference signal resources within the measurement range, and it is desirable that the total number of ports for the reference signal resources within the measurement range not be less than the minimum total number of ports. Furthermore, the parameters specify the maximum total number of ports for the reference signal resources within the measurement range, and it is desirable that the total number of ports for the reference signal resources within the measurement range not exceed the maximum total number of ports. Finally, the parameters specify both the minimum and maximum total number of ports for the reference signal resources within the measurement range, and it is desirable that the total number of ports for the reference signal resources within the measurement range not exceed either the minimum or the maximum total number of ports.

[0099] The following explains the number of ports for the measurement reference signal resources.

[0100] As an example, the number of ports for measuring reference signal resources includes the total number of ports for measuring reference signal resources.

[0101] In some embodiments, corresponding to the measurement of multiple reference signal resources, the parameter requirements include the total number of ports of the measured reference signal resources. For example, corresponding to the measurement of two reference signal resources, the number of ports of the first reference signal resource is P1, the number of ports of the second reference signal resource is P2, and the total number of ports of the measured reference signal resources is the sum of P1 and P2. Generally, corresponding to the measurement of N reference signal resources, the number of ports of the nth reference signal resource is Pn, and the total number of ports of the measured reference signal resources is the sum of the number of ports of these N reference signal resources.

[0102] The parameter requirement is the total number of ports of the measurement reference signal resources. The requirement is set based on the total number of ports of the measurement reference signal resources, without sacrificing the flexibility of adjusting the number of ports of each reference signal resource, or the flexibility of adjusting the number of reference signal resources, so as to make the transmission feasibility of the reference signal stronger and the transmission reliable; thus, the channel state can be reliably predicted.

[0103] As an example, the total number of ports for measuring reference signal resources includes at least one of the following.

[0104] The parameters specify the total number of ports for the reference signal resource being measured; the minimum total number of ports for the reference signal resource being measured; the maximum number of ports for the reference signal resource being measured; and the minimum and maximum number of ports for the reference signal resource being measured. It should be understood that the parameter requirements include the total number of ports for the reference signal resource being measured, and it is desired that the total number of ports for the reference signal resource being measured is neither less than nor greater than this total number of ports. The parameter requirements also include the minimum total number of ports for the reference signal resource being measured, and it is desired that the total number of ports for the reference signal resource being measured is not less than this minimum total number of ports. Furthermore, the parameter requirements include both the minimum and maximum total number of ports for the reference signal resource being measured, and it is desired that the total number of ports for the reference signal resource being measured does not exceed the minimum and maximum total number of ports.

[0105] The following explains the number of times the reference signal was transmitted.

[0106] Predicting channel state requires measuring reference signals at multiple time points, multiple frequency domain locations, or multiple time-frequency locations. Parameter requirements include the number of times the reference signal is transmitted, which can be understood as the number of times the reference signal is measured.

[0107] As an example, the number of times the reference signal is transmitted includes at least one of the following.

[0108] The parameters include: the number of times the reference signal is transmitted; the minimum number of times the reference signal is transmitted; the maximum number of times the reference signal is transmitted; both the minimum and maximum number of times the reference signal is transmitted; the number of times the reference signal is transmitted over a given length range; the number of times the reference signal is transmitted over a minimum length range; and the number of times the reference signal is transmitted over a maximum length range. It should be understood that if the number of times the reference signal is transmitted is too low, the prediction method cannot extract the channel variation patterns and will struggle to predict future channel states. If the number of times the reference signal is transmitted is too high, the prediction method's capabilities are limited, and excessive transmissions of the reference signal can lead to measurement confusion or errors. Therefore, including the number of times the reference signal is transmitted in the parameter requirements helps improve the reliability of the predicted channel states.

[0109] The number of reference signal resources is explained below.

[0110] It should be understood that reference signal resources are used to carry reference signals, and predicting the channel state requires measuring the reference signals on multiple reference signal resources. Therefore, parameter requirements may include the number of reference signal resources.

[0111] As an example, the number of reference signal resources includes at least one of the following.

[0112] The number of reference signal resources; the minimum number of reference signal resources; the maximum number of reference signal resources; the minimum and maximum number of reference signal resources.

[0113] For example, the number of reference signal resources includes the number of reference signal resources with different time-domain locations, and different reference signal resources are required to be in different time-domain locations. As another example, the number of reference signal resources includes the number of reference signal resources with different frequency-domain locations, and different reference signal resources are required to be in different frequency-domain locations.

[0114] The following explains the number of reference signal resource groups. Each reference signal resource group includes multiple reference signal resources, and different reference signal resource groups are located at different time domain locations.

[0115] As an example, the number of reference signal resource groups includes at least one of the following.

[0116] The parameter requirements specify the number of reference signal resource groups; the minimum number of reference signal resource groups; the maximum number of reference signal resource groups; and both the minimum and maximum number of reference signal resource groups. It should be understood that the parameter requirements include the number of reference signal resource groups, with the desired number being neither less than nor greater than this number. The parameter requirements also include the minimum number of reference signal resource groups, with the desired number being neither less than this minimum number. Furthermore, the parameter requirements include both the minimum and maximum number of reference signal resource groups, with the desired number not exceeding these two values.

[0117] The following explains the number of reference signal resources in the reference signal resource group.

[0118] In some embodiments, the number of reference signal resources is the same in different reference signal resource groups.

[0119] In some embodiments, reference signal resources with the same index number in different reference signal resource groups have the same frequency domain position.

[0120] In some embodiments, reference signal antenna ports with the same index number in reference signal resources within different reference signal resource groups are considered to be the same antenna port. The channels corresponding to different symbols transmitted from the same antenna port can be mutually deduced.

[0121] In some embodiments, the number of reference signal resources in a reference signal resource group decreases according to its index number in ascending order; or, the number of reference signal resources in a reference signal resource group decreases according to its chronological order. All reference signal resource groups except the first one are subsets of the first reference signal resource group. Alternatively, the (n+1)th reference signal resource group is a subset of the nth reference signal resource group, where n is a positive integer.

[0122] In some embodiments, the number of reference signal resources in a reference signal resource group increases in ascending order of its index number; or, the number of reference signal resources in a reference signal resource group increases in chronological order. All reference signal resource groups except the last one are subsets of the last resource group. Alternatively, the (n-1)th reference signal resource group is a subset of the nth reference signal resource group, where n is a positive integer.

[0123] The following explains the power bias information of the reference signal.

[0124] It should be understood that the quality of the received reference signal affects the reliability of the predicted channel state. Parameter requirements include the power bias information of the reference signal to control the quality of the reference signal, thereby controlling the reliability of the predicted channel state.

[0125] The following explains the angular spacing between the reference signals.

[0126] It should be understood that the transmission of a reference signal is directional. Reference signal resources carry reference signals, and the direction of transmission of a reference signal is also called the direction of the reference signal resource carrying the reference signal. The angular spacing between reference signals is reflected in the angular spacing between reference signal resources, also known as the angular spacing between reference signal resources.

[0127] As an example, the angular spacing between reference signals includes at least one of the following.

[0128] Angular spacing between reference signals; minimum angular spacing between reference signals; maximum angular spacing between reference signals; minimum and maximum angular spacing between reference signals; angular spacing in the first dimension between reference signals; angular spacing between the first and second dimensions between reference signals. The first and second dimensions are different; the first dimension is one of the horizontal and vertical dimensions, and the second dimension is the other of the horizontal and vertical dimensions.

[0129] The following explains the angular range between the reference signals.

[0130] As an example, the angular range between reference signals includes at least one of the following.

[0131] The angular range in the first dimension between the reference signals; for example, the parameter requirement includes the angular range in the horizontal dimension between the reference signals. As another example, the parameter requirement includes the angular range in the vertical dimension between the reference signals.

[0132] The angular ranges in the first and second dimensions between the reference signals; the first and second dimensions are orthogonal to each other. For example, the parameter requirements include the angular ranges in the horizontal and vertical dimensions between the reference signals.

[0133] The following explains the mapping relationship between the time-domain order of the reference signal and the transmission direction of the reference signal.

[0134] As an example, the mapping relationship between the temporal order of the reference signal and the transmission direction of the reference signal includes at least one of the following.

[0135] According to the time-domain sequence, the vertical angle of the transmission direction of the reference signal increases.

[0136] According to the time-domain sequence, the vertical angle of the transmission direction of the reference signal decreases.

[0137] The reference signal is rotated counterclockwise according to the time-domain sequence.

[0138] The reference signal is rotated clockwise according to the time-domain sequence.

[0139] The following explains the mapping relationship between the frequency domain order of the reference signal and the transmission direction of the reference signal.

[0140] As an example, the mapping relationship between the frequency domain order of the reference signal and the transmission direction of the reference signal includes at least one of the following.

[0141] The vertical angle of the transmission direction of the reference signal increases from low to high in the frequency domain.

[0142] The vertical angle of the transmission direction of the reference signal decreases from low to high frequency.

[0143] The reference signal is rotated counterclockwise in order of frequency from low to high.

[0144] The reference signal is rotated clockwise according to the frequency domain from low to high.

[0145] The following explains the mapping relationship between the index number of the reference signal resource and the transmission direction of the reference signal.

[0146] As an example, the mapping relationship between the index number of the reference signal resource and the transmission direction of the reference signal includes at least one of the following.

[0147] According to the reference signal resource index number sequence, the vertical angle of the transmission direction of the reference signal increases.

[0148] According to the reference signal resource index number order, the vertical angle of the transmission direction of the reference signal decreases.

[0149] The reference signal is rotated counterclockwise according to the reference signal resource index number sequence.

[0150] The transmission direction of the reference signal is rotated clockwise according to the reference signal resource index number.

[0151] The following explains the mapping relationship between the order of reference signal resources in the reference signal configuration information and the transmission direction of the reference signal.

[0152] As an example, the mapping relationship between the order of reference signal resources in the reference signal configuration information and the transmission direction of the reference signal includes at least one of the following.

[0153] According to the order in which the reference signal resources are arranged in the configuration information, the vertical angle of the transmission direction of the reference signal increases.

[0154] According to the order in which the reference signal resources are arranged in the configuration information, the vertical angle of the transmission direction of the reference signal decreases.

[0155] The transmission direction of the reference signal is rotated counterclockwise according to the order in which the reference signal resources are arranged in the configuration information.

[0156] The transmission direction of the reference signal is rotated clockwise according to the order in which the reference signal resources are arranged in the configuration information.

[0157] The following explains the desired time-domain spacing between reference signal resources, and the maximum permissible difference between the actual time-domain spacing and the desired time-domain spacing between reference signal resources. The maximum permissible difference between the actual time-domain spacing and the desired time-domain spacing between reference signal resources can also be referred to as the maximum permissible difference between the actual time-domain spacing and the desired time-domain spacing between reference signal resources.

[0158] The desired time-domain spacing between reference signal resources is the time-domain spacing expected by the first node. The actual time-domain spacing between reference signal resources is the actual time-domain spacing between them. Maintaining the desired time-domain spacing between reference signal resources is difficult. Allowing deviations between the actual and desired time-domain spacing increases the feasibility of predicting the channel state, thereby increasing its reliability. Parameter requirements include the maximum permissible difference between the actual and desired time-domain spacing between reference signal resources to prevent the difference from exceeding the permissible value, which would make the predicted channel state unreliable.

[0159] The following explains the channel quality degradation value of the difference between the actual time-domain spacing between corresponding reference signal resources and the expected time-domain spacing between reference signal resources.

[0160] It should be understood that there is a deviation between the actual and expected time-domain spacing. This deviation reduces the accuracy of the predicted channel state, thus degrading channel quality. Different deviation values ​​result in different levels of channel quality degradation. Parameter requirements include the corresponding channel quality degradation values ​​for each deviation value to ensure the reliability of the predicted channel state when the second communication node can flexibly configure or transmit reference signals. Parameters characterizing channel quality include channel quality indication (CQI), signal-to-interference-plus-noise ratio (SINR), squared generalized cosine similarity (SGCS), and reference signal receiving power (RSRP).

[0161] The following explains the maximum permissible difference between the actual time-domain spacing and the expected time-domain spacing between reference signal resources corresponding to a channel quality degradation value. This maximum permissible difference between the actual time-domain spacing and the expected time-domain spacing between reference signal resources corresponding to a channel quality degradation value can also be referred to as the maximum permissible difference between the actual time-domain spacing and the expected time-domain spacing between reference signal resources corresponding to a channel quality degradation value.

[0162] It should be understood that there is a deviation between the actual time-domain spacing and the expected time-domain spacing. This deviation will reduce the accuracy of the predicted channel state, thereby degrading the channel quality. Different deviation values ​​will result in different channel quality degradation values. The parameter requirements include the maximum difference between the actual time-domain spacing between the reference signal resources and the expected time-domain spacing between the reference signal resources, which corresponds to the channel quality degradation value. This is to ensure the reliability of the predicted channel state by allowing the second node to flexibly configure or transmit reference signals.

[0163] The following explains the maximum permissible difference between the actual time-domain position and the desired time-domain position of the reference signal resources. This maximum permissible difference can also be referred to as the maximum permissible difference between the actual time-domain position and the desired time-domain position of the reference signal resources.

[0164] It should be understood that the expected time-domain spacing between reference signal resources is the same as the time-domain spacing between reference signal resources expected by the first node. The expected time-domain position of the reference signal resources is obtained based on the expected time-domain spacing; this expected time-domain position is the desired time-domain position of the reference signal resources. The actual time-domain position of the reference signal resources is the actual time-domain position of the reference signal resources. Maintaining the expected time-domain position for each reference signal resource is difficult; allowing deviations between the actual and expected time-domain positions increases the feasibility of predicting the channel state, thereby increasing its reliability. Parameter requirements include the maximum permissible difference between the actual and expected time-domain positions of the reference signal resources to prevent the difference from exceeding the permissible value, which would render the predicted channel state unreliable.

[0165] The following explains the channel quality degradation value of the difference between the actual time-domain location and the expected time-domain location of the corresponding reference signal resources.

[0166] It should be understood that there is a deviation between the actual time domain location and the expected time domain location. This deviation will reduce the accuracy of the predicted channel state, thereby degrading the channel quality. Different deviation values ​​will result in different channel quality degradation values. The parameter requirements include the channel quality degradation value corresponding to the deviation value, so that the second node can ensure the reliability of the predicted channel state when flexibly configuring or transmitting reference signals.

[0167] The following explains the maximum permissible difference between the actual time-domain location and the desired time-domain location of reference signal resources corresponding to a channel quality degradation value. This maximum permissible difference between the actual time-domain location and the desired time-domain location of reference signal resources corresponding to a channel quality degradation value can also be referred to as the maximum permissible difference between the actual time-domain location and the desired time-domain location of reference signal resources corresponding to a channel quality degradation value.

[0168] It should be understood that there is a deviation between the actual time-domain location and the expected time-domain location. This deviation will reduce the accuracy of the predicted channel state, thereby degrading the channel quality. Different deviation values ​​will result in different channel quality degradation values. The parameter requirements include the maximum difference between the actual time-domain location and the expected time-domain location of the reference signal resources corresponding to the allowable channel quality degradation value, so that the second node can ensure the reliability of the predicted channel state when flexibly configuring or transmitting reference signals.

[0169] S102. Receive reference signal configuration information and receive reference signals according to the reference signal configuration information; the reference signal configuration information is determined based on parameter requirements.

[0170] In some embodiments, after receiving the first indication information sent by the first node, the second node determines reference signal configuration information based on the first indication information and then sends the reference signal configuration information to the first node. Correspondingly, the first node receives the reference signal configuration information sent by the second node and receives the reference signal according to the reference signal configuration information.

[0171] As an example, reference signal configuration information includes or is used to indicate at least one of the following:

[0172] The time-domain location of the reference signal;

[0173] The frequency domain location of the reference signal;

[0174] The direction of the reference signal transmission;

[0175] The range of the transmission direction of the reference signal;

[0176] The angular range between reference signals;

[0177] Angular spacing between reference signals;

[0178] The index number of the reference signal;

[0179] The identification number of the reference signal;

[0180] The number of reference signal resources used to carry reference signals;

[0181] The number of ports for the reference signal;

[0182] The number of times the reference signal was transmitted;

[0183] The number of reference signal resource groups;

[0184] Power bias information of the reference signal;

[0185] The mapping relationship between the time-domain position of the reference signal and the transmission direction of the reference signal;

[0186] The mapping relationship between the frequency domain position of the reference signal and the transmission direction of the reference signal;

[0187] The mapping relationship between the index number of the reference signal and the transmission direction of the reference signal.

[0188] The time-domain position of the reference signal is the time-domain position of the reference signal resource carrying the reference signal, the frequency-domain position of the reference signal is the frequency-domain position of the reference signal resource carrying the reference signal, and the identification number of the reference signal is the identification number of the reference signal resource carrying the reference signal.

[0189] As an example, the time-domain location of a reference signal includes the OFDM symbol location of the reference signal resources used to carry the reference signal. Reference signal resources within the same set of reference signal resources have the same OFDM symbol location. That is, in the reference signal configuration information, an OFDM symbol location is configured for each reference signal resource, and all reference signal resources within the same set have the same OFDM symbol location.

[0190] For example, the reference signal resource set includes a first reference signal resource and a second reference signal resource; OFDM symbol positions are configured for the first reference signal resource and for the second reference signal resource; the OFDM symbol positions configured for the first reference signal resource and the second reference signal resource are the same. Generally, the reference signal resource set includes a first reference signal resource, a second reference signal resource, ..., an Nth reference signal resource; the OFDM symbol position configured for the first reference signal resource is L1, for the second reference signal resource is L2, ..., and for the Nth reference signal resource is LN; L1, L2, ..., LN are equal or the same. Having the same OFDM symbol position for all reference signal resources in the same reference signal resource set helps ensure equal spacing between adjacent reference signal resources, thereby improving the performance of predicted channel states and enhancing the reliability of the predicted channel states. The reference signal resources included in the reference signal resource set are used to predict channel states.

[0191] As another example, the time-domain location of the reference signal includes the OFDM symbol location of the reference signal resources used to carry the reference signal, and all reference signal resources have the same OFDM symbol location. That is, in the reference signal configuration information, an OFDM symbol location is configured for each reference signal resource, and all reference signal resources have the same OFDM symbol location.

[0192] For example, in a report corresponding to the same predicted channel state, the reference signal configuration information includes a first reference signal resource and a second reference signal resource; OFDM symbol positions are configured for the first reference signal resource and the second reference signal resource; the OFDM symbol positions configured for the first reference signal resource are the same as those configured for the second reference signal resource. Another example is that the reference signal configuration information includes a first reference signal resource, a second reference signal resource, ..., an Nth reference signal resource; the OFDM symbol position configured for the first reference signal resource is L1, for the second reference signal resource it is L2, ..., and for the Nth reference signal resource it is LN; L1, L2, ..., LN are equal or the same. The reference signal resources included in the reference signal configuration information are used to predict the channel state. For a report corresponding to the same predicted channel state, all reference signal resources have the same OFDM symbol position, which helps ensure equal spacing between adjacent reference signal resources, thereby improving the performance of the predicted channel state and enhancing its reliability.

[0193] As another example, the time-domain location of the reference signal includes the OFDM symbol location of the reference signal resource set to which the reference signal resource used to carry the reference signal belongs. The reference signal resource set includes N reference signal resources, and the N reference signal resources share the OFDM symbol location of the reference signal resource set, where N is a positive integer. In other words, the reference signal configuration information includes a reference signal resource set, which includes N reference signal resources, and OFDM symbol locations are configured for the reference signal resource set; the N reference signal resources in the reference signal resource set are subject to the OFDM symbol locations of the reference signal resource set.

[0194] It should be understood that by configuring OFDM symbol positions on the reference signal resource set, the N reference signal resources in the reference signal resource set share this OFDM symbol position configuration; thus, all reference signal resources in the same reference signal resource set have the same OFDM symbol position, which helps to ensure that the spacing between adjacent reference signal resources is equal, thereby improving the performance of predicted channel state and enhancing the reliability of predicted channel state.

[0195] As another example, the time-domain location of the reference signal includes the OFDM symbol location of the reference signal resource set to which the reference signal resource to carry the reference signal belongs. The reference signal resource set includes N reference signal resources, where N is a positive integer. The reference signal configuration information also includes, or is further used to indicate, at least one of the following:

[0196] The temporal spacing between reference signal resources;

[0197] The temporal offset between each reference signal resource and the OFDM symbol location of the reference signal resource set.

[0198] For example, the reference signal resource set includes a first reference signal resource, a second reference signal resource, ..., an Nth reference signal resource; an OFDM symbol position is configured for the reference signal resource set, for example, L; a time-domain spacing is configured between the reference signal resources, for example, d; an offset O1 is configured between the first reference signal resource and the OFDM symbol position L, an offset O2 is configured between the second reference signal resource and the OFDM symbol position L, ..., an offset ON is configured between the Nth reference signal resource and the OFDM symbol position L. The time-domain position of each reference signal resource determined according to the OFDM symbol position L and the time-domain spacing d is the target position of each reference signal resource, and the time-domain position determined according to the target position of each reference signal resource and the offset of each reference signal resource from position L is the actual position of each reference signal resource. In this way, the target position of each reference signal resource is provided by the OFDM position L of the reference signal resource set and the spacing d between the reference signal resources, so that the target positions have the same spacing, which helps to improve the accuracy of the predicted channel state; and the actual position of each reference signal resource is provided by the offset of each reference signal resource relative to the position L, so that the actual position has a certain degree of flexibility, thereby increasing the feasibility of the scheme of the present disclosure embodiment; because it is difficult to keep the same OFDM symbol position for each reference signal resource, the reliability of the predicted channel state is improved.

[0199] As another example, the reference signal configuration information is used to indicate a set of reference signal resources, which includes N reference signal resources, where N is a positive integer. The reference signal configuration information is also used to indicate at least one of the following:

[0200] The temporal spacing between reference signal resources;

[0201] The OFDM symbol position of the first reference signal resource, the time-domain offset between the OFDM symbol position of the other reference signal resources (excluding the first reference signal resource) and the first reference signal resource, wherein the first reference signal resource is one of the N reference signal resources.

[0202] In other words, the reference signal configuration information includes a set of reference signal resources, which includes N reference signal resources. The time-domain spacing between the reference signal resources is configured for the set of reference signal resources. The OFDM symbol position is configured for one of the N reference signal resources, and the time-domain offset between the reference signal resource and the OFDM symbol position is configured for each of the remaining reference signal resources.

[0203] For example, the reference signal resource set includes a first reference signal resource, a second reference signal resource, ..., an Nth reference signal resource; the reference signal resource set is configured with a time-domain spacing between the reference signal resources, for example, d; an OFDM symbol position is configured for the nth reference signal resource, for example, L; and offsets from the OFDM symbol position L are configured for the other reference signal resources besides the nth reference signal resource, for example, offset O1 for the first reference signal resource, offset O2 for the second reference signal resource, ..., offset ON for the Nth reference signal resource. The time-domain position of each reference signal resource determined according to the OFDM symbol position L and the time-domain spacing d is the target position of each reference signal resource, and the time-domain position determined according to the target position of each reference signal resource and the offset of each reference signal resource from position L is the actual position of each reference signal resource. In this way, the target position of each reference signal resource is provided by the OFDM symbol position L of the nth reference signal resource and the spacing d between the reference signal resources, so that the target positions have the same spacing, which helps to improve the accuracy of the predicted channel state; and the actual position of each reference signal resource is provided by the offset of each reference signal resource relative to the position L, so that the actual position has a certain degree of flexibility, thereby increasing the feasibility of the scheme of the present disclosure embodiment; because it is difficult to keep the same OFDM symbol position for each reference signal resource; thus improving the reliability of the predicted channel state.

[0204] As another example, the reference signal configuration information is used to indicate a set of reference signal resources, which includes N reference signal resources, where N is a positive integer. The reference signal configuration information is also used to indicate at least one of the following:

[0205] The temporal spacing d between reference signal resources;

[0206] The OFDM symbol position of the first reference signal resource among N reference signal resources, and the offset between the time domain spacing and the time domain spacing d between each reference signal resource and the reference signal resource preceding it among the other reference signal resources among the N reference signal resources.

[0207] In other words, the reference signal configuration information includes a set of reference signal resources, which includes N reference signal resources. The time-domain spacing d between the reference signal resources is configured for the reference signal resource set. The OFDM symbol position L1 is configured for the first reference signal resource, and the offset between the time-domain spacing d and the time-domain spacing between the current reference signal resource and the previous reference signal resource is configured for each of the remaining reference signal resources.

[0208] For example, the reference signal resource set includes N reference signal resources, ordered chronologically as the first reference signal resource, the second reference signal resource, ..., the Nth reference signal resource; the time-domain spacing between the reference signal resources is configured, for example, d; the OFDM symbol position is configured for the first reference signal resource, for example, L; for the other reference signal resources besides the first reference signal resource, the offset of the time-domain spacing between the current reference signal resource and the previous reference signal resource relative to the time-domain spacing d is configured, for example, the second reference signal resource is configured with an offset O2 of the time-domain spacing between the second reference signal resource and the first reference signal resource relative to the time-domain spacing d, the third reference signal resource is configured with an offset O3 of the time-domain spacing between the third reference signal resource and the second reference signal resource relative to the time-domain spacing d, ..., and the Nth reference signal resource is configured with an offset ON of the time-domain spacing between the Nth reference signal resource and the (N-1)th reference signal resource relative to the time-domain spacing d. By configuring the time-domain spacing between the current reference signal resource and the previous reference signal resource and the offset of the time-domain spacing d, the spacing of each reference signal resource tends to be consistent, and the actual position has a certain degree of flexibility, thereby increasing the feasibility of the scheme of the present disclosure embodiment; because it is difficult to keep each reference signal resource at the same OFDM symbol position; thereby improving the reliability of the predicted channel state.

[0209] In some embodiments, the reference signal configuration information further includes or is used to indicate the time-domain spacing between reference signal resources, wherein the time-domain spacing between reference signal resources is an integer multiple of N OFDM symbols, and N is the number of OFDM symbols included in a time slot.

[0210] For example, a time slot may consist of 14 OFDM symbols, with the time-domain spacing between reference signal resources being an integer multiple of 14 OFDM symbols. Alternatively, a time slot may consist of 7 OFDM symbols, with the time-domain spacing between reference signal resources being an integer multiple of 7 OFDM symbols.

[0211] In some embodiments, after receiving the reference signal configuration information, the first node receives the reference signal according to the configuration of the reference signal indicated by the reference signal configuration information. For example, the reference signal is received at the time domain location indicated by the reference signal.

[0212] S103. Predict the channel state based on the reference signal to obtain the predicted channel state.

[0213] In some embodiments, after receiving a reference signal, the first node can predict the channel state at a future time based on the reference signal to obtain the predicted channel state.

[0214] As an example, the first node can predict the channel state at future times based on a preset prediction method and a reference signal, thus obtaining the predicted channel state. The preset prediction method can be predefined or configured on the network side.

[0215] In some embodiments, the predicted channel state includes at least one of the following:

[0216] Channel quality indication, precoding matrix, reference signal received power, and reference signal resource indication.

[0217] As an example, the indication of a reference signal resource includes at least one of the following methods.

[0218] One approach is as follows: The first node selects K reference signal resources from the first group of reference signal resources indicated by the reference signal configuration information, and reports the selected K reference signal resources to the second node. All of the first group of reference signal resources carry reference signals.

[0219] Another approach is as follows: The first node selects M reference signal resources from the second group of reference signal resources indicated by the reference signal configuration information, and reports the indication of the selected M reference signal resources to the second node. At least one reference signal resource in the second group of reference signal resources does not carry a reference signal.

[0220] Another approach is as follows: the reference signal configuration information indicates the first group of reference signal resources and the second group of reference signal resources. The first group of reference signal resources all carry reference signals. The reference signal configuration information indicates the mapping relationship between the first group of reference signal resources and the second group of reference signal resources. Based on the measurement of the first group of reference signals and the mapping relationship between the first group of reference signal resources and the second group of reference signal resources, the first node selects M reference signal resources from the second group of reference signal resources indicated by the reference signal configuration information and reports the indication of the selected M reference signal resources to the second node.

[0221] Reference signal resources do not carry reference signals and can be understood as zero-power reference signal resources or virtual reference signal resources, thereby saving actual resource overhead and undertaking the logical functions used for prediction. Based on the measurement of the first set of reference signals and the mapping relationship between the first and second sets of reference signal resources, the first node selects M reference signal resources from the second set of reference signal resources indicated by the reference signal configuration information, providing a mechanism to save the actual overhead of the second set of reference signal resources.

[0222] S104. Send the predicted channel state to the second node.

[0223] In some embodiments, after the first node predicts the reference signal and obtains the predicted channel state, it can send the predicted channel state to the second node so that the second node can determine a data transmission strategy that matches the data transmission time point based on the predicted channel state, thereby improving the data transmission performance of the communication system.

[0224] In some embodiments, the first node receives third indication information sent by the second node, the third indication information being used to indicate the channel state at the predicted first time-domain location. The first node can predict the channel state at the first time-domain location based on the third indication information, that is, the predicted channel state is the predicted channel state at the first time-domain location.

[0225] As an example, the predicted channel state is sent to the second node, including:

[0226] Send the predicted channel state of the first time domain location to the second node, and / or send the predicted channel state and second time domain location of the second time domain location to the second node, wherein the first time domain location is different from the second time domain location, and the second time domain location is determined by the first node.

[0227] In other words, the second node indicates the channel state of the predicted first time domain position. The first node can send the channel state of the predicted first time domain position to the second node, or it can send the channel state of the predicted second time domain position and the second time domain position to the second node, or it can send the channel state of the predicted first time domain position and the channel state of the predicted second time domain position and the second time domain position to the second node.

[0228] It should be understood that the first node measures and predicts the channel; however, the first time-domain position indicated by the second node through the third indication information may not be an appropriate time-domain position. For example, the first node's determination of the first time-domain position based on channel measurement may not be conducive to predicting the channel state; or the channel state at the first time-domain position may not be conducive to characterizing the future channel state. The first node selects a second time-domain position and predicts the channel state at the second time-domain position. If the second time-domain position is conducive to predicting the channel state or conducive to characterizing the future channel state, the first node reports the channel state and the second time-domain position, thereby improving the reliability of the predicted channel state. After receiving the channel state and the second time-domain position, the second node can adjust the time-domain position of the reference signal resources based on the second time-domain position to improve the performance of channel prediction, and determine the data transmission strategy based on the channel state at the second time-domain position, which better characterizes the future channel state. This improves the accuracy of the determined data transmission strategy and helps to improve the performance of data transmission in the communication system.

[0229] As another example, the predicted channel state is sent to the second node, including:

[0230] Send the predicted channel state of the first time-domain location to the second node, and / or send fourth indication information to the second node, the fourth indication information being used to indicate at least one of the following:

[0231] The time-domain location of the reference signal resource corresponding to the best prediction performance;

[0232] Optimal predictive performance.

[0233] In other words, the second node indicates the channel state of the predicted first time domain location. The first node can send the predicted channel state of the first time domain location to the second node, or it can send the fourth indication information to the second node, or it can send both the predicted channel state of the first time domain location and the fourth indication information to the second node.

[0234] It should be understood that different time-domain positions of the reference signal resource correspond to different prediction performances, and there exists a time-domain position of the reference signal resource corresponding to the optimal prediction performance. The first node can infer this time-domain position based on the channel obtained by measuring the reference signal and recommend it to the second node. The second node then adjusts the time-domain position of the reference signal resource according to the time-domain position corresponding to the optimal prediction performance, thereby improving the performance of channel state prediction. The first node indicates the best achievable prediction performance to the second node, enabling the second node to improve channel prediction performance by adjusting the time-domain position of the reference signal resource.

[0235] Based on the embodiment shown in Figure 2, the first node predicts the channel state and sets parameter requirements for the reference signal. If the reference signal configuration information does not meet the parameter requirements, or if the transmitted reference signal does not meet the parameter requirements, the first node cannot reliably predict the channel state, or the predicted channel state will be unreliable; for example, the channel state cannot be predicted, the accuracy of the predicted channel state deteriorates, or the accuracy of the predicted channel state does not meet the usage requirements. Therefore, in this embodiment, the first node indicates the parameter requirements of the reference signal for predicting the channel state to the second node, so that the reference signal received by the first node meets the parameter requirements for the reference signal, thereby ensuring the reliability of the channel state predicted based on the received reference signal, and thus improving the reliability of the predicted channel state based on the reference signal, which helps to improve the performance of data transmission in the communication system.

[0236] In some embodiments, the first node may also send second indication information to the second node, the second indication information being used to indicate at least one of the following:

[0237] The time-domain location of the predicted channel state;

[0238] The frequency domain location of the predicted channel state;

[0239] The number of predicted channel states;

[0240] The method used to predict channel state.

[0241] The first and second nodes can pre-agree on at least one of the following: the time-domain location of the channel state, the frequency-domain location of the channel state, the number of channel states, and the method used to predict the channel state; for example, the second node configures the above content to the first node. Alternatively, the first and second nodes may default to the above content. Using a pre-determined approach, the content is determined before channel measurement and may not be suitable for the channel conditions, thus reducing the performance and reliability of channel state prediction. However, by sending a second indication message to the second node to report the above content, the first node can make a selection based on channel measurement, thereby improving the performance and reliability of channel prediction.

[0242] In some embodiments, as shown in FIG4, FIG4 is a flowchart illustrating another communication method according to some embodiments, the method being applied to a second node. The second node may be the second node 120 shown in FIG1 above, and the method may include: S201 to S203.

[0243] S201, Receive the first instruction information.

[0244] The first indication information is used to indicate the parameter requirements of the predicted channel state for the reference signal. The parameter requirements include at least one of the following:

[0245] The time interval of the reference signal;

[0246] Frequency domain spacing of the reference signal;

[0247] The number of ports for the reference signal;

[0248] The number of ports used to carry reference signal resources;

[0249] The number of ports for measuring reference signal resources;

[0250] The number of times the reference signal was transmitted;

[0251] The number of reference signal resources;

[0252] The number of reference signal resource groups;

[0253] The number of reference signal resources in the reference signal resource group;

[0254] Spacing between reference signal resource groups;

[0255] Power bias information of the reference signal;

[0256] Angular spacing between reference signals;

[0257] The angular range between reference signals;

[0258] The mapping relationship between the temporal order of the reference signal and the transmission direction of the reference signal;

[0259] The mapping relationship between the frequency domain order of the reference signal and the transmission direction of the reference signal;

[0260] The mapping relationship between the index number of the reference signal resource and the transmission direction of the reference signal;

[0261] The mapping relationship between the order of reference signal resources in the reference signal configuration information and the transmission direction of the reference signal;

[0262] The desired temporal spacing between reference signal resources;

[0263] The maximum permissible difference between the actual time-domain spacing between reference signal resources and the expected time-domain spacing between reference signal resources;

[0264] The channel quality degradation value corresponding to the difference between the actual time-domain spacing between reference signal resources and the expected time-domain spacing between reference signal resources;

[0265] The maximum permissible difference between the actual time-domain spacing between reference signal resources corresponding to the channel quality degradation and the expected time-domain spacing between the reference signal resources;

[0266] The maximum permissible difference between the actual time-domain location of reference signal resources and the expected time-domain location of reference signal resources;

[0267] The channel quality degradation value corresponding to the difference between the actual time-domain location and the expected time-domain location of the reference signal resources;

[0268] The maximum permissible difference between the actual time-domain location of the reference signal resources corresponding to the channel quality degradation value and the expected time-domain location of the reference signal resources.

[0269] For the description of each requirement in the parameter requirements, please refer to the corresponding description in the embodiment shown in Figure 2 above, which will not be repeated here.

[0270] S202. Send reference signal configuration information. Send reference signals based on reference signal configuration information. Reference signal configuration information is determined based on parameter requirements.

[0271] Upon receiving the first indication information, the second node determines the reference signal configuration information based on the first indication information, and then sends the reference signal based on the reference signal configuration information, so that the sent reference signal can meet the parameter requirements of the predicted channel state for the reference signal.

[0272] As an example, reference signal configuration information includes or is used to indicate one of the following:

[0273] The time-domain location of the reference signal;

[0274] The frequency domain location of the reference signal;

[0275] The direction of the reference signal transmission;

[0276] The range of the transmission direction of the reference signal;

[0277] The angular range between reference signals;

[0278] Angular spacing between reference signals;

[0279] The index number of the reference signal;

[0280] The identification number of the reference signal;

[0281] The number of reference signal resources used to carry reference signals;

[0282] The number of ports for the reference signal;

[0283] The number of times the reference signal was transmitted;

[0284] The number of reference signal resource groups;

[0285] Power bias information of the reference signal;

[0286] The mapping relationship between the time-domain position of the reference signal and the transmission direction of the reference signal;

[0287] The mapping relationship between the frequency domain position of the reference signal and the transmission direction of the reference signal;

[0288] The mapping relationship between the index number of the reference signal and the transmission direction of the reference signal.

[0289] In some embodiments, the reference signal configuration information further includes or is used to indicate the time-domain spacing between reference signal resources, wherein the time-domain spacing between reference signal resources is an integer multiple of N orthogonal frequency division multiplexing (OFDM) symbols, and N is the number of OFDM symbols included in a time slot.

[0290] In some embodiments, the time-domain location of the reference signal includes the OFDM symbol location of the reference signal resource used to carry the reference signal, and the OFDM symbol locations of the reference signal resources in the same set of reference signal resources are the same.

[0291] In some embodiments, the time-domain location of the reference signal includes the OFDM symbol location of the reference signal resources used to carry the reference signal, and all reference signal resources have the same OFDM symbol location.

[0292] In some embodiments, the time-domain location of the reference signal includes the OFDM symbol location of the reference signal resource set to which the reference signal resource to carry the reference signal belongs. The reference signal resource set includes N reference signal resources, and the N reference signal resources share the OFDM symbol location of the reference signal resource set, where N is a positive integer.

[0293] In some embodiments, the time-domain location of the reference signal includes the OFDM symbol location of the reference signal resource set to which the reference signal resource carrying the reference signal belongs. The reference signal resource set includes N reference signal resources, where N is a positive integer. The reference signal configuration information also includes or is used to indicate at least one of the following:

[0294] The temporal spacing between reference signal resources;

[0295] The temporal offset between each reference signal resource and the OFDM symbol location of the reference signal resource set.

[0296] In some embodiments, the reference signal configuration information is used to indicate a set of reference signal resources, the set of reference signal resources including N reference signal resources, where N is a positive integer, and the reference signal configuration information is also used to indicate at least one of the following:

[0297] The temporal spacing between reference signal resources;

[0298] The OFDM symbol position of the first reference signal resource, the time-domain offset between the OFDM symbol position of the other reference signal resources (excluding the first reference signal resource) and the first reference signal resource, wherein the first reference signal resource is one of the N reference signal resources.

[0299] In some embodiments, the reference signal configuration information is used to indicate a set of reference signal resources, the set of reference signal resources including N reference signal resources, where N is a positive integer, and the reference signal configuration information is also used to indicate at least one of the following:

[0300] The temporal spacing d between reference signal resources;

[0301] The OFDM symbol position of the first reference signal resource among N reference signal resources, and the offset between the time domain spacing and the time domain spacing d between each reference signal resource and the reference signal resource preceding it among the other reference signal resources among the N reference signal resources.

[0302] For a description of the reference signal configuration information, please refer to the corresponding description in the embodiment shown in Figure 2 above, which will not be repeated here.

[0303] S203, Receive the predicted channel state.

[0304] The predicted channel state is obtained based on the reference signal.

[0305] In some embodiments, the predicted channel state includes at least one of the following:

[0306] Channel quality indication, precoding matrix, reference signal received power, and reference signal resource indication.

[0307] The description of the predicted channel state can be found in the corresponding description in the embodiment shown in Figure 2 above, and will not be repeated here.

[0308] In some embodiments, the second node may also send a third indication information to the first node, the third indication information being used to indicate the channel state for predicting the first time domain location.

[0309] As an example, receiving a predicted channel state includes: receiving a predicted channel state at a first time-domain location sent by a first node, and / or receiving a predicted channel state at a second time-domain location sent by the first node, wherein the first time-domain location is different from the second time-domain location.

[0310] As another example, receiving the predicted channel state includes: receiving the channel state of a predicted first time-domain location transmitted by the first node, and / or receiving fourth indication information transmitted by the first node, the fourth indication information being used to indicate at least one of the following:

[0311] The time-domain location of the reference signal resource corresponding to the best prediction performance;

[0312] Best predictive performance.

[0313] The descriptions of the second time-domain location and the fourth indication information can be found in the corresponding descriptions in the embodiments shown in Figure 2 above, and will not be repeated here.

[0314] In some embodiments, the second node may also receive second indication information sent by the first node, the second indication information being used to indicate at least one of the following:

[0315] The time-domain location of the predicted channel state;

[0316] The frequency domain location of the predicted channel state;

[0317] The number of predicted channel states;

[0318] The method used to predict channel state.

[0319] The description of the second instruction information can be referred to the corresponding description in the embodiment shown in Figure 2 above, and will not be repeated here.

[0320] In some embodiments, after receiving the predicted channel state, the second node can determine a data transmission strategy adapted to the data transmission time point based on the predicted channel state, and then transmit data based on the data transmission strategy adapted to the data transmission time point, thereby improving the data transmission performance of the communication system.

[0321] The foregoing primarily describes the solution provided in this disclosure from the perspective of the interaction between various nodes. It is understood that each node, such as the first node or the second node, includes corresponding hardware structures and / or software modules to perform the aforementioned functions. Those skilled in the art should readily recognize that, based on the algorithmic steps of the examples described in conjunction with the embodiments disclosed herein, this disclosure can be implemented in hardware or a combination of hardware and computer software. Whether a function is executed in hardware or by computer software driving hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this disclosure.

[0322] This disclosure embodiment can divide the first node or the second node into functional modules according to the above method embodiment. For example, each function can be divided into a separate functional module, or two or more functions can be integrated into one functional module. The integrated module can be implemented in hardware or software. It should be noted that the module division in this disclosure embodiment is illustrative and only represents one logical functional division. In actual implementation, there may be other division methods. The following description uses the example of dividing each functional module according to each function.

[0323] Figure 5 is a schematic diagram of the composition of a communication device according to some embodiments. As shown in Figure 5, the communication device 30 includes a transmitting unit 301, a receiving unit 302, and a processing unit 303.

[0324] The communication device 30 can be the first node or a chip within the first node. When the communication device 30 is used to implement the functions of the first node in the above embodiments, each unit is used to implement the following functions:

[0325] The transmitting unit 301 is used to transmit first indication information, which is used to indicate the parameter requirements of the predicted channel state for the reference signal;

[0326] The receiving unit 302 is used to receive reference signal configuration information and receive reference signals according to the reference signal configuration information; the reference signal configuration information is determined based on parameter requirements.

[0327] Processing unit 303 is used to predict the channel state based on the reference signal and obtain the predicted channel state;

[0328] The transmitting unit 301 is also used to transmit the predicted channel state to the second node.

[0329] In some embodiments, the transmitting unit 301 is further configured to transmit second indication information, the second indication information being configured to indicate at least one of the following: the time-domain location of the predicted channel state; the frequency-domain location of the predicted channel state; the number of predicted channel states; and the method used to predict the channel state.

[0330] In some embodiments, the receiving unit 302 is further configured to receive third indication information, the third indication information being used to indicate the channel state for predicting the first time domain position;

[0331] The transmitting unit 301 is used to transmit the channel state of the predicted first time domain position to the second node, and / or to transmit the channel state of the predicted second time domain position and the second time domain position to the second node, wherein the first time domain position and the second time domain position are different.

[0332] In some embodiments, the receiving unit 302 is further configured to receive third indication information, the third indication information being used to indicate the channel state for predicting the first time domain position;

[0333] The transmitting unit 301 is configured to transmit the channel state of the predicted first time-domain position to the second node, and / or transmit fourth indication information to the second node, the fourth indication information being used to indicate at least one of the following: the time-domain position of the reference signal resource corresponding to the best prediction performance; the best prediction performance.

[0334] Figure 6 is a schematic diagram of the composition of another communication device according to some embodiments. As shown in Figure 6, the communication device 40 includes a receiving unit 401 and a transmitting unit 402.

[0335] The communication device 40 can be the second node or a chip within the second node. When the communication device 40 is used to implement the functions of the second node in the above embodiments, each unit is used to implement the following functions:

[0336] The receiving unit 401 is used to receive first indication information, which is used to indicate the parameter requirements of the predicted channel state for the reference signal;

[0337] The transmitting unit 402 is used to transmit reference signal configuration information and transmit reference signals based on the reference signal configuration information; the reference signal configuration information is determined based on parameter requirements.

[0338] The receiving unit 401 is also used to receive the predicted channel state, which is predicted based on the reference signal.

[0339] In some embodiments, the receiving unit 401 is further configured to receive second indication information, the second indication information being configured to indicate at least one of the following:

[0340] The time-domain location of the predicted channel state;

[0341] The frequency domain location of the predicted channel state;

[0342] The number of predicted channel states;

[0343] The method used to predict channel state.

[0344] In some embodiments, the transmitting unit 402 is further configured to transmit and receive third indication information, the third indication information being used to indicate the channel state of the predicted first time domain position;

[0345] The receiving unit 401 is configured to: receive the channel state of a predicted first time-domain position transmitted by the first node, and / or receive the channel state and the second time-domain position of a predicted second time-domain position transmitted by the first node, wherein the first time-domain position is different from the second time-domain position.

[0346] In some embodiments, the transmitting unit 402 is further configured to transmit and receive third indication information, the third indication information being used to indicate the channel state of the predicted first time domain location.

[0347] The receiving unit 401 is configured to: receive the channel state of the predicted first time-domain position transmitted by the first node, and / or receive fourth indication information transmitted by the first node, the fourth indication information indicating at least one of the following:

[0348] The time-domain location of the reference signal resource corresponding to the best prediction performance;

[0349] Optimal predictive performance.

[0350] It should be noted that the units in Figures 5 and 6 can also be called modules; for example, the transmitting unit can be called a transmitting module. Furthermore, in the embodiments shown in Figures 5 and 6, the names of the units may not be those shown in the figures; for example, the transmitting unit can also be called a communication unit, and the receiving unit can also be called a communication unit.

[0351] If the units in Figures 5 and 6 are implemented as software functional modules and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solutions of the embodiments of this disclosure, in essence, or the parts that contribute to the prior art, or all or part of the technical solutions, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) or processor to execute all or part of the steps of the methods of the various embodiments of this disclosure. Storage media for storing computer software products include various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0352] When the communication device 30 or communication device 40 implements the functions of the integrated module in hardware, FIG7 is a schematic diagram of the structure of a communication device according to some embodiments. As shown in FIG7, the communication device 50 includes: a processor 502, a communication interface 503, and a bus 504. In some embodiments, the communication device 50 may further include a memory 501.

[0353] Processor 502 may implement or execute various exemplary logic blocks, modules, and circuits described in conjunction with this disclosure. Processor 502 may be a central processing unit, a general-purpose processor, a digital signal processor, an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. Processor 502 may implement or execute various exemplary logic blocks, modules, and circuits described in conjunction with this disclosure. Processor 502 may also be a combination that implements computing functions, such as including one or more microprocessor combinations, a combination of a DSP and a microprocessor, etc.

[0354] Communication interface 503 is used to connect to other devices via a communication network. This communication network can be Ethernet, wireless access network, wireless local area network (WLAN), etc.

[0355] The memory 501 may be a read-only memory (ROM) or other type of static storage device capable of storing static information and instructions, random access memory (RAM) or other type of dynamic storage device capable of storing information and instructions, or electrically erasable programmable read-only memory (EEPROM), disk storage medium or other magnetic storage device, or any other medium capable of carrying or storing desired program code in the form of instructions or data structures and accessible by a computer, but is not limited thereto.

[0356] In one implementation, the memory 501 can exist independently of the processor 502. The memory 501 can be connected to the processor 502 via a bus 504 and is used to store instructions or program code. When the processor 502 calls and executes the instructions or program code stored in the memory 501, it can implement the communication method provided in this embodiment of the disclosure.

[0357] In another implementation, the memory 501 can also be integrated with the processor 502.

[0358] Bus 504 can be an extended industry standard architecture (EISA) bus, etc. Bus 504 can be divided into address bus, data bus, control bus, etc. For ease of illustration, only one thick line is used to represent it in Figure 7, but this does not mean that there is only one bus or one type of bus.

[0359] Through the above description of the implementation methods, those skilled in the art can clearly understand that, for the sake of convenience and brevity, only the division of the above functional modules is used as an example. In actual applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the first node or the second node can be divided into different functional modules to complete all or part of the functions described above.

[0360] This disclosure also provides a computer-readable storage medium. All or part of the processes in the above method embodiments can be executed by computer instructions instructing related hardware. The program can be stored in the computer-readable storage medium, and when executed, it can include the processes of the above method embodiments. The computer-readable storage medium can also be an external storage device for the first or second node, such as a pluggable hard drive, smart media card (SMC), secure digital (SD) card, flash card, etc., equipped on the first or second node. Further, the computer-readable storage medium can include both internal storage units of the first or second node and external storage devices. The computer-readable storage medium is used to store the computer program and other programs and data required by the first or second node. The computer-readable storage medium can also be used to temporarily store data that has been output or will be output. The readable storage medium includes non-transitory computer-readable storage media.

[0361] This disclosure also provides a computer program product comprising a computer program that, when run on a computer, causes the computer to perform any of the communication methods provided in the above embodiments.

[0362] Although this disclosure has been described herein in conjunction with various embodiments, those skilled in the art will understand and implement other variations of the disclosed embodiments by reviewing the accompanying drawings, the disclosure, and the appended claims in carrying out the claimed disclosure. In the claims, the word "comprising" does not exclude other components or steps, and "a" or "an" does not exclude a plurality. A single processor or other unit can implement several functions listed in the claims. While different dependent claims may recite certain measures, this does not mean that these measures cannot be combined to produce a good effect.

[0363] Although this disclosure has been described in conjunction with detailed features and embodiments, it will be apparent that various modifications and combinations can be made thereto without departing from the spirit and scope of this disclosure. Accordingly, this specification and drawings are merely exemplary illustrations of the disclosure as defined by the appended claims and are to be considered as covering any and all modifications, variations, combinations, or equivalents within the scope of this disclosure. It is obvious that those skilled in the art can make various alterations and modifications to this disclosure without departing from its spirit and scope. Thus, this disclosure is also intended to include any such modifications and modifications that fall within the scope of the claims of this disclosure and their equivalents.

[0364] The above are merely specific embodiments of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any changes or substitutions within the technical scope disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A communication method, wherein, The method is performed by a first node, and the method comprises: sending first indication information, the first indication information being used for indicating parameter requirements of predicted channel state on reference signals; receiving reference signal configuration information, and receiving reference signals according to the reference signal configuration information; wherein the reference signal configuration information is determined based on the parameter requirements; predicting channel state according to the reference signals, and obtaining predicted channel state; sending the predicted channel state to a second node.

2. The method of claim 1, wherein, The parameter requirements comprise at least one of: a time interval of the reference signals; a frequency interval of the reference signals; a port number of the reference signals; a port number of reference signal resources used for carrying the reference signals; a port number of measurement reference signal resources; a transmission number of the reference signals; a number of the reference signal resources; a number of reference signal resource groups; a number of reference signal resources in a reference signal resource group; an interval between the reference signal resource groups; power offset information of the reference signals; an angle interval between the reference signals; an angle range between the reference signals; a mapping relationship between a time order of the reference signals and a transmission direction of the reference signals; a mapping relationship between a frequency order of the reference signals and the transmission direction of the reference signals; a mapping relationship between an index number of the reference signal resources and the transmission direction of the reference signals; a mapping relationship between an order of the reference signal resources in the reference signal configuration information and the transmission direction of the reference signals; an expected time interval between the reference signal resources; a maximum allowable difference between an actual time interval between the reference signal resources and the expected time interval between the reference signal resources; a channel quality drop value corresponding to a difference between the actual time interval between the reference signal resources and the expected time interval between the reference signal resources; a maximum allowable difference between the actual time interval between the reference signal resources corresponding to the channel quality drop value and the expected time interval between the reference signal resources; a maximum allowable difference between an actual time position between the reference signal resources and an expected time position between the reference signal resources; a channel quality drop value corresponding to a difference between the actual time position between the reference signal resources and the expected time position between the reference signal resources; a maximum allowable difference between the actual time position between the reference signal resources corresponding to the channel quality drop value and the expected time position between the reference signal resources.

3. The method according to claim 1, wherein, The reference signal configuration information comprises or is used for indicating at least one of: a time position of the reference signals; a frequency position of the reference signals; a transmission direction of the reference signals; a range of the transmission direction of the reference signals; an angle range between the reference signals; an angle interval between the reference signals; an index number of the reference signals; an identification number of the reference signals; a number of reference signal resources used for carrying the reference signals; a port number of the reference signals; a transmission number of the reference signals; a number of reference signal resource groups; power offset information of the reference signals; a mapping relationship between a time domain position of the reference signal and a transmission direction of the reference signal; a mapping relationship between a frequency domain position of the reference signal and a transmission direction of the reference signal; a mapping relationship between an index number of the reference signal and a transmission direction of the reference signal.

4. The method of claim 3, wherein, The reference signal configuration information further comprises or is used for indicating a time domain interval between reference signal resources, wherein the time domain interval between the reference signal resources is an integer multiple of N orthogonal frequency division multiplexing (OFDM) symbols, and N is a number of OFDM symbols included in one time slot.

5. The method of claim 1, wherein, The predicted channel state comprises at least one of: a channel quality indicator, a precoding matrix, a reference signal received power, and an indication of a reference signal resource.

6. The method of claim 1, further comprising: sending second indication information, the second indication information being used for indicating at least one of: a time domain position of the predicted channel state; a frequency domain position of the predicted channel state; a number of the predicted channel states; and a method used by the predicted channel state.

7. The method of claim 3, wherein, The time domain position of the reference signal comprises an OFDM symbol position of a reference signal resource used for carrying the reference signal, and the OFDM symbol positions of reference signal resources in a same reference signal resource set are the same.

8. The method of claim 3, wherein, The time domain position of the reference signal comprises an OFDM symbol position of a reference signal resource used for carrying the reference signal, and the OFDM symbol positions of all reference signal resources are the same.

9. The method according to claim 3, wherein, The time domain position of the reference signal comprises an OFDM symbol position of a reference signal resource set to which a reference signal resource used for carrying the reference signal belongs, and the reference signal resource set comprises N reference signal resources, the N reference signal resources share the OFDM symbol position of the reference signal resource set, wherein N is a positive integer.

10. The method of claim 3, wherein, The time domain position of the reference signal comprises an OFDM symbol position of a reference signal resource set to which a reference signal resource used for carrying the reference signal belongs, and the reference signal resource set comprises N reference signal resources, N is a positive integer, and the reference signal configuration information further comprises or is further used for indicating at least one of: a time domain interval between the reference signal resources; a time domain offset between each reference signal resource and the OFDM symbol position of the reference signal resource set.

11. The method of claim 1, wherein, The reference signal configuration information is used for indicating a reference signal resource set, the reference signal resource set comprises N reference signal resources, N is a positive integer, and the reference signal configuration information is further used for indicating at least one of: a time domain interval between the reference signal resources; an OFDM symbol position of a first reference signal resource, and a time domain offset between other reference signal resources except the first reference signal resource in the N reference signal resources and the OFDM symbol position of the first reference signal resource, the first reference signal resource being one of the N reference signal resources.

12. The method of claim 1, wherein, The reference signal configuration information is used for indicating a reference signal resource set, the reference signal resource set comprises N reference signal resources, N is a positive integer, and the reference signal configuration information is further used for indicating at least one of: a time domain distance d between the reference signal resources; an OFDM symbol position of a first reference signal resource in the N reference signal resources, and an offset between a time domain distance between each of the reference signal resources other than the first reference signal resource and a reference signal resource before the reference signal resource and the time domain distance d.

13. The method of claim 1, further comprising: receiving third indication information, the third indication information being used for indicating a predicted channel state at a first time domain location; the sending, to the second node, the predicted channel state, comprising: sending, to the second node, a predicted channel state at the first time domain location, and / or sending, to the second node, a predicted channel state at a second time domain location and the second time domain location, the first time domain location being different from the second time domain location.

14. The method of claim 1, further comprising: receiving third indication information, the third indication information being used for indicating a predicted channel state at a first time domain location; the sending, to the second node, the predicted channel state, comprising: sending, to the second node, a predicted channel state at the first time domain location, and / or sending, to the second node, fourth indication information, the fourth indication information being used for indicating at least one of: a time domain location of a reference signal resource corresponding to a best prediction performance; and the best prediction performance.

15. A communication method, wherein, the method being performed by a second node, and the method comprising: receiving first indication information, the first indication information being used for indicating a parameter requirement of a predicted channel state on a reference signal; sending reference signal configuration information, and sending a reference signal based on the reference signal configuration information; wherein the reference signal configuration information is determined based on the parameter requirement; receiving a predicted channel state, the predicted channel state being predicted based on the reference signal.

16. A communications device comprising: a memory and a processor; the memory and the processor being coupled; the memory being configured to store instructions executable by the processor; the processor being configured to execute the instructions to perform the method according to any one of claims 1 to 15.

17. A computer readable storage medium, wherein, a computer readable storage medium having stored thereon computer instructions, the computer instructions, when executed on a computer, causing the computer to perform the method according to any one of claims 1 to 15.

18. A computer program product, wherein, a computer program product comprising computer instructions, the computer instructions, when executed on a computer, causing the computer to perform the method according to any one of claims 1 to 15.

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