Communication method and device, storage medium and program product

Abstract

The invention provides a communication method and device, a storage medium and a program product, relates to the technical field of communication, and is used for improving the reliability of a predicted channel state. The method comprises the following steps: sending first indication information, wherein the first indication information is used for indicating a parameter requirement of a predicted channel state on a reference signal; receiving reference signal configuration information, and receiving a reference signal according to the reference signal configuration information; predicting a channel state according to the reference signal to obtain a predicted channel state; and sending the predicted channel state to the second node.

Description

Technical Field

[0001] The present disclosure relates to the field of communication technologies, and in particular, to a communication method, apparatus, storage medium, and program product. Background Art

[0002] To improve the performance of data transmission in a communication system, a terminal measures a reference signal, predicts the channel state at a future time, and reports the predicted channel state to a base station to reduce the time delay from the time point of the predicted channel state to the time point of data transmission at the base station, so that the base station adapts the data transmission time point to the channel state according to the data transmission strategy determined based on the predicted channel state reported by the terminal.

[0003] However, currently, the reliability of the channel state predicted by the terminal is low, resulting in poor performance of data transmission in the communication system. Summary of the Invention

[0004] Embodiments of the present disclosure provide a communication method, apparatus, storage medium, and program product for improving the reliability of the predicted channel state.

[0005] To achieve the above object, the present disclosure adopts the following technical solutions:

[0006] In a first aspect, a communication method is provided, which is applied to a first node. The method includes:

[0007] Sending first indication information, where the first indication information is used to indicate the parameter requirements of the predicted channel state for the reference signal;

[0008] Receiving reference signal configuration information, and receiving a reference signal according to the reference signal configuration information;

[0009] Predicting a channel state according to the reference signal to obtain a predicted channel state;

[0010] Sending the predicted channel state to a second node.

[0011] In a second aspect, a communication method is provided, which is applied to a second node. The method includes:

[0012] Receiving first indication information, where the first indication information is used to indicate the parameter requirements of the predicted channel state for the reference signal;

[0013] Sending reference signal configuration information, and sending a reference signal based on the reference signal configuration information;

[0014] Receiving the predicted channel state, where the predicted channel state is predicted based on the reference signal.

[0015] In a third aspect, a communication apparatus is provided, which is applied to a first node. The apparatus includes:

[0016] A sending unit, configured to send first indication information, where the first indication information is used to indicate the parameter requirements of a predicted channel state for a reference signal;

[0017] A receiving unit, configured to receive reference signal configuration information and receive a reference signal according to the reference signal configuration information;

[0018] A processing unit, configured to predict a channel state according to a reference signal to obtain a predicted channel state;

[0019] A sending unit, configured to send the predicted channel state to a second node.

[0020] In a fourth aspect, a communication device is provided, which is applied to a second node. The device includes:

[0021] A receiving unit, configured to receive first indication information, where the first indication information is used to indicate the parameter requirements of a predicted channel state for a reference signal;

[0022] A sending unit, configured to send reference signal configuration information and send a reference signal based on the reference signal configuration information;

[0023] A receiving unit, configured to receive a predicted channel state, where the predicted channel state is predicted based on a reference signal.

[0024] In a fifth aspect, a communication device is provided, including: a processor and a memory; the memory stores instructions executable by the processor; when the processor is configured to execute the instructions, the communication device implements any method provided in the first aspect or the second aspect above.

[0025] In a sixth aspect, a computer-readable storage medium is provided. The computer-readable storage medium stores computer instructions, and when the computer instructions run on a computer, the computer executes any method provided in the first aspect or the second aspect.

[0026] In a seventh aspect, a computer program product including computer instructions is provided. When the computer instructions run on a computer, the computer executes any method provided in the first aspect or the second aspect.

[0027] In the present disclosure, a first node sends first indication information to indicate the parameter requirements of a predicted channel state for a 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 the one expected by the first node, improving the reliability of the received reference signal, and further improving the reliability of the predicted channel state obtained based on the reference signal, which helps to improve the performance of data transmission in a communication system. Description of the Drawings

[0028] The accompanying drawings are used to provide a further understanding of the technical solutions of the present invention, and constitute a part of the specification. Together with the embodiments of the present disclosure, they are used to explain the technical solutions of the present invention, and do not constitute a limitation to the technical solutions of the present invention.

[0029] Figure 1 It is a schematic structural diagram of a communication system provided by an embodiment of the present disclosure;

[0030] Figure 2 It is a schematic flowchart of a communication method provided by an embodiment of the present disclosure;

[0031] Figure 3 It is a schematic diagram of a time interval provided by an embodiment of the present disclosure;

[0032] Figure 4 It is a schematic flowchart of another communication method provided by an embodiment of the present disclosure;

[0033] Figure 5 It is a schematic diagram of the composition of a communication device provided by an embodiment of the present disclosure;

[0034] Figure 6 It is a schematic diagram of the composition of another communication device provided by an embodiment of the present disclosure;

[0035] Figure 7 It is a schematic structural diagram of a communication device provided by an embodiment of the present disclosure. Detailed Embodiments

[0036] Next, the technical solutions in the embodiments of the present disclosure will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present disclosure.

[0037] Unless the context otherwise requires, throughout the specification and claims, the term "comprise" and other forms thereof, such as the third-person singular form "comprises" and the present participle form "comprising", are interpreted as open, inclusive meanings, that is, "including, but not limited to". In the description of the specification, the terms "one embodiment", "some embodiments", "exemplary embodiments", "example", "specific example", or "some examples", etc. are intended to indicate that the specific features, structures, materials, or characteristics related to the embodiment or example are included in at least one embodiment or example of the present disclosure. The schematic representations of the above terms do not necessarily refer to the same embodiment or example. In addition, the specific features, structures, materials, or characteristics may be included in any one or more embodiments or examples in any suitable manner.

[0038] The terms "first" and "second" are used only for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present disclosure, unless otherwise specified, the meaning of "a plurality" is two or more.

[0039] In the embodiments of the present disclosure, words such as "exemplary" or "for example" are used to represent examples, illustrations, or explanations. Any embodiment or design solution described as "exemplary" or "for example" in the embodiments of the present disclosure should not be construed as being more preferred or having more advantages than other embodiments or design solutions. Rather, the use of words such as "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0040] In addition, the use of "based on" means open and inclusive, because a process, step, calculation, or other action "based on" one or more of the stated conditions or values may, in practice, be based on additional conditions or values beyond those stated.

[0041] 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 according to the channel state represented by the received channel state information, and transmits data based on the data transmission strategy to improve the efficiency of data transmission. Since the wireless channel is a time-varying channel, there is a time delay from the time point when the base station transmits the reference signal to the time point when the base station transmits data. During this period, the wireless channel has changed, and the wireless channel state at the time point when the base station transmits data is no longer the wireless channel state at the time point when the base station transmits the reference signal. The data transmission strategy determined according to the channel state at the reference signal transmission time point reported by the terminal no longer adapts to the channel state at the data transmission time point, resulting in low performance of the communication system in transmitting data. To improve the performance of the communication system in transmitting data, the terminal measures the reference signal, predicts the channel state at a future time, and reports the predicted channel state to the base station to reduce the time delay from the time point of the predicted channel state to the time point when the base station transmits data, so that the base station can adapt the data transmission strategy determined according to the predicted channel state reported by the terminal to the channel state at the data transmission time point. However, currently, the reliability of the channel state predicted by the terminal is relatively low, resulting in low performance of the communication system in transmitting data. How to improve the reliability of the predicted channel state is an urgent problem to be solved.

[0042] Based on this, embodiments of the present disclosure provide a communication method, device, storage medium, and program product. The first node sends 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 the one expected by the first node, improving the reliability of the received reference signal, and further improving the reliability of the predicted channel state obtained based on the reference signal, which helps to improve the performance of the communication system in transmitting data.

[0043] The solutions of the embodiments of the present disclosure are introduced below with reference to the accompanying drawings.

[0044] The technical solutions provided by the embodiments of the present disclosure can be applied to various mobile communication networks. For example, the NR mobile communication network adopting the fifth-generation mobile communication technology (5G), future mobile communication networks (such as 6G wireless communication systems), or various communication convergence systems, etc. The embodiments of the present disclosure do not limit this.

[0045] In the embodiments of the present disclosure, a mobile communication network (including but not limited to the third-generation 3G, fourth-generation 4G, fifth-generation 5G, and future mobile communication networks, such as the sixth-generation mobile communication network 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 (which may also be referred to as the first communication node device, the first node) may be a base station-side device, and the second communication node (which may also be referred to as the second communication node device, the second node) may be a terminal-side device. In some examples, for instance, 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, for instance, in device-to-device communication between two communication nodes, both the first communication node and the second communication node may be base stations or terminals. Therefore, whether the first node and the second node are base stations or terminals needs to be determined according to the context.

[0046] Figure 1 The following shows a schematic structural diagram of a communication system provided by an embodiment of the present disclosure. As Figure 1 shown, the communication system includes but is not limited to a first node 110 and a second node 120. Among them. Wireless signals can be transmitted, received, and related interactions can occur between the first node 110 and the second node 120.

[0047] In a wireless communication scenario, the first node 110 communicates with the second node 120 via a wireless channel. For example, the first node 110 is a terminal, the second node 120 is a base station, and the terminal communicates with the base station via a wireless channel. Another example, the first node 110 is a terminal, the second node 120 is a wireless router, and the wireless router communicates with the terminal via a wireless channel. Another example, the first node 110 is a first base station, the second node 120 is a second base station, and the first base station communicates with the second base station via a wireless channel. Another example, the first node 110 is a first terminal, the second node 120 is a second terminal, and the first terminal communicates with the second terminal via a wireless channel. Another example, the first node 110 is a repeater, the second node 120 is a base station, and the base station communicates with the repeater via a wireless channel. Another example, the first node 110 is a terminal, the second node 120 is a repeater, and the repeater communicates with the terminal via a wireless channel. Another example, the first node 110 is a first repeater, the second node 120 is a second repeater, and the first repeater communicates with the second repeater via a wireless channel. Another example, the first node 110 is a base station, the second node 120 is a satellite, and the satellite communicates with the base station via a wireless channel. Another example, the first node 110 is a satellite, the second node 120 is a base station, and the base station communicates with the satellite via a wireless channel. Another example, the first node 110 is a terminal, the second node 120 is a satellite, and the satellite communicates with the terminal via a wireless channel. Another example, the first node 110 is a satellite, the second node 120 is a terminal, and the terminal communicates with the satellite via a wireless channel. Another example, the first node 110 is a ground device, the second node 120 is an aircraft, and the aircraft communicates with the ground device via a wireless channel. Another example, the first node 110 is a first aircraft, the second node 120 is a second aircraft, and the first aircraft communicates with the second aircraft via a wireless channel.

[0048] In the present disclosure, the "first" node, "second" node, "first" method, "second" method, "first" matrix, "second" matrix, "first" part, "second" part, unless otherwise specified, are only used for descriptive distinction and do not represent front-back or sequence order.

[0049] In the present disclosure, the base station may be a base station in Long Term Evolution (LTE), Long Term Evolution Advanced (LTE-A), 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, etc.). The base station may include various macro base stations, micro base stations, home base stations, remote radio heads, reconfigurable intelligent surfaces (RISs), routers, Wireless Fidelity (WIFI) devices, or various network-side devices such as a primary cell and a secondary cell.

[0050] In the present disclosure, the terminal is a device with wireless transceiver functions, which can be deployed on land, including indoor or outdoor; it can also be deployed on water (such as a ship, etc.); it can also be deployed in the air (such as an airplane, a balloon, a satellite, etc.). The terminal may be a mobile phone, a tablet computer (Pad), a computer with wireless transceiver functions, a Virtual Reality (VR) terminal, an Augmented Reality (AR) terminal, a wireless terminal in industrial control, a wireless terminal in self-driving, a wireless terminal in remote medical, a wireless terminal in a smart grid, a wireless terminal in transportation safety, a wireless terminal in a smart city, a wireless terminal in a smart home, and so on. The embodiments of the present disclosure do not limit the application scenarios. The terminal may sometimes also be referred to as a user, a user equipment, an access terminal, a UE unit, a UE station, a mobile station, a mobile unit, a remote station, a remote terminal, a mobile device, a UE terminal, a wireless communication device, a UE agent, or a UE device, etc. The embodiments of the present disclosure do not limit this.

[0051] It should be understood that Figure 1 is an exemplary structural diagram, Figure 1 The number of devices included in the shown communication system is not limited. For example, the number of the first node and the second node is not limited. And, in addition to Figure 2 the devices shown, Figure 1 the shown communication system may further include other devices, which are not limited herein.

[0052] Next, as Figure 2 shown, an embodiment of the present disclosure provides a communication method, which is applied to a first node. The first node may be the first node 110 shown above Figure 1 . The method may include the following steps:

[0053] S101. Send first indication information.

[0054] In some embodiments, in order 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 may be the second node 120 shown above Figure 1 . For ease of description, the following embodiments will be described by taking the first node as a terminal and the second node as a base station as an example.

[0055] As an example, the above parameter requirements include at least one of the following:

[0056] Time interval of the reference signal;

[0057] Frequency-domain interval of the reference signal;

[0058] Number of ports of the reference signal;

[0059] Number of ports of the reference signal resource for carrying the reference signal;

[0060] Number of ports for measuring the reference signal resource;

[0061] Transmission times of the reference signal;

[0062] Number of reference signal resources;

[0063] Number of reference signal resource groups;

[0064] Number of reference signal resources in the reference signal resource group;

[0065] Interval between reference signal resource groups;

[0066] Power bias information of the reference signal;

[0067] Angle interval between reference signals;

[0068] Angle range between reference signals;

[0069] Mapping relationship between the time domain order of the reference signal and the transmission direction of the reference signal;

[0070] Mapping relationship between the frequency domain order of the reference signal and the transmission direction of the reference signal;

[0071] The mapping relationship between the index number of the reference signal resource and the transmission direction of the reference signal;

[0072] The mapping relationship between the order of the reference signal resource in the reference signal configuration information and the transmission direction of the reference signal;

[0073] The expected time domain spacing between reference signal resources;

[0074] The maximum allowable difference between the actual time domain spacing between reference signal resources and the expected time domain spacing between reference signal resources;

[0075] 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;

[0076] The maximum allowable difference between the actual time domain spacing between reference signal resources and the expected time domain spacing between reference signal resources corresponding to the channel quality degradation value;

[0077] The maximum allowable difference between the actual time domain position between reference signal resources and the expected time domain position between reference signal resources;

[0078] The channel quality degradation value corresponding to the difference between the actual time domain position between reference signal resources and the expected time domain position between reference signal resources;

[0079] The maximum allowable difference between the actual time domain position between reference signal resources and the expected time domain position between reference signal resources corresponding to the channel quality degradation value.

[0080] The time spacing of the reference signal is described below.

[0081] The time spacing of the above-mentioned reference signal refers to the time spacing of reference signal transmission. It should be understood that in order to predict the channel state in the future, it is necessary to measure the reference signals transmitted at multiple times. Different prediction methods have different requirements for the time spacing of the reference signal. If the time spacing of the reference signal does not match the prediction method, the reliability of the channel state predicted by this prediction method is relatively low. Therefore, the parameter requirements for the predicted channel state can include the time spacing of the reference signal to improve the reliability of the predicted channel state. The reference signal resource is used to carry the reference signal. The time spacing of the reference signal resource represents the time spacing of the reference signal. The time spacing of the reference signal resource is the time spacing between reference signal resources, that is, the time spacing between reference signal resources represents the time spacing of the reference signal.

[0082] As an example, the time spacing of the reference signal includes at least one of the following:

[0083] Milliseconds; representing the time interval in milliseconds will not cause misunderstanding or confusion about the size of the time interval due to changes in the time parameters of the communication system, thereby avoiding the unreliability of predicting the channel state due to changes in the time domain unit of the communication system.

[0084] The time domain unit of the communication system; representing the time interval in terms of the time domain unit of the communication system can make the time interval of the transmitted reference signal meet the time interval of the reference signal in the parameter requirements. For example, representing the time interval in terms of orthogonal frequency division multiplexing (OFDM) symbols, or representing the time interval in terms of time slots. In the technology based on OFDM modulation, the smallest frequency domain unit is the subcarrier, and the smallest time domain unit is the OFDM symbol; for the convenience of using frequency domain resources, a resource block (RB) is defined, and a resource block is defined as a specific number of consecutive subcarriers; a bandwidth part (BWP) is also defined, and a bandwidth part is defined as a specific number of consecutive resource blocks on a carrier; for the convenience of using time domain resources, a time slot is defined, and a time slot is defined as a specific number of consecutive OFDM symbols, and the time slot is also a type of time domain unit.

[0085] The smallest time domain unit of the communication system; for example, representing the time interval in terms of OFDM symbols. Representing the time interval of the reference signal in terms of the smallest time domain unit of the communication system can accurately express the time interval of the reference signal, avoid errors in the time interval of the transmitted reference signal, or avoid unreliable control of the time interval of the transmitted reference signal. For example, the time interval of the reference signal as a parameter requirement for the reference signal is 1 time slot, and there are multiple existence modes of the time interval of the reference signal, but only one existence mode of the time interval can be used to reliably predict the channel state. Representing the time interval in terms of time slots may result in an incorrect time interval of the transmitted reference signal. Exemplarily, Figure 3 The following is a schematic diagram of a time interval provided by an embodiment of the present disclosure. Refer to Figure 3 , 1 time slot contains 14 OFDM symbols (that is, Figure 3Among the 0 - 13 OFDM symbols), the time interval of the reference signal as a reference for the parameter requirements of the reference signal is 1 time slot, and there are the following 2 time intervals. One time interval is 14 OFDM symbols, and the other time interval is 3 OFDM symbols; if the time interval of the reference signal applicable to the method of predicting the channel state is 14 OFDM symbols, while the time interval of the transmitted reference signal is 3 OFDM symbols, then predicting the channel state will be unreliable; conversely, if the time interval of the reference signal applicable to the method of 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. Figure 3 The CSI-RS in it is the channel state information-reference signal (CSI-RS).

[0086] The specific time interval of the reference signal; the maximum time interval of the reference signal; the minimum time interval of the reference signal; the maximum time interval and the minimum time interval of the reference signal. It should be understood that the parameter requirements include the specific time interval of the reference signal, and it is desired that the time interval of the reference signal is not greater than this specific time interval and not less than this specific 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 is not less than 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 is not greater than the maximum time interval. The parameter requirements include the minimum time interval and the maximum time interval of the reference signal, and it is desired that the time interval of the reference signal does not exceed the minimum time interval and the maximum time interval.

[0087] The following explains the frequency domain interval of the reference signal.

[0088] As an example, the frequency domain interval of the reference signal includes at least one of the following:

[0089] The frequency domain unit of the communication system; expressing the frequency domain interval in terms of the frequency domain unit of the communication system can make the frequency domain interval of the transmitted reference signal meet the frequency domain interval of the reference signal in the parameter requirements. For example, expressing the frequency domain interval in terms of subcarriers or in terms of resource blocks.

[0090] The smallest frequency-domain unit of a communication system; for example, the frequency-domain spacing is represented by subcarriers. Representing the frequency-domain spacing of a reference signal in terms of the smallest frequency-domain unit of the communication system can accurately express the frequency-domain spacing of the reference signal, avoiding errors in the frequency-domain spacing of the transmitted reference signal or ensuring reliable control of the frequency-domain spacing of the transmitted reference signal. Exemplarily, one resource block contains 12 subcarriers, and the frequency-domain spacing of the reference signal as a parameter requirement for the reference signal is one resource block. There are the following two frequency-domain spacings: one is 12 subcarriers, and the other is 3 subcarriers. If the frequency-domain spacing of the reference signal applicable to the method for predicting the channel state is 12 subcarriers, while the frequency-domain spacing of the transmitted reference signal is 3 subcarriers, then predicting the channel state will be unreliable. Conversely, if the frequency-domain spacing of the reference signal applicable to the method for predicting the channel state is 3 subcarriers, while the frequency-domain spacing of the transmitted reference signal is 12 subcarriers, then predicting the channel state will be unreliable.

[0091] The specific frequency-domain spacing of the reference signal; the minimum frequency-domain spacing of the reference signal; the maximum frequency-domain spacing of the reference signal; the minimum and maximum frequency-domain spacings of the reference signal. It should be understood that the parameter requirements include the specific frequency-domain spacing of the reference signal, and it is desired that the frequency-domain spacing of the reference signal is not greater than this specific frequency-domain spacing and not less than this specific frequency-domain spacing. The parameter requirements include the minimum frequency-domain spacing of the reference signal, and it is desired that the frequency-domain spacing of the reference signal is not less than the minimum frequency-domain spacing. The parameter requirements include the maximum frequency-domain spacing of the reference signal, and it is desired that the frequency-domain spacing of the reference signal is not greater than the maximum frequency-domain spacing. The parameter requirements include the minimum and maximum frequency-domain spacings of the reference signal, and it is desired that the frequency-domain spacing of the reference signal does not exceed the minimum and maximum frequency-domain spacings.

[0092] The following describes the number of ports of the reference signal.

[0093] As an example, the number of ports of the reference signal includes at least one of the following:

[0094] The specific number of ports of the reference signal; the minimum number of ports of the reference signal; the maximum number of ports of the reference signal; the minimum and maximum number of ports of the reference signal. It should be understood that the parameter requirements include the specific number of ports of the reference signal resource, and it is desired that the number of ports of the reference signal resource is not greater than this specific number of ports and not less than this specific number of ports. The parameter requirements include the minimum number of ports of the reference signal resource, and it is desired that the number of ports of the reference signal resource is not less than the minimum number of ports. The parameter requirements include the maximum number of ports of the reference signal resource, and it is desired that the number of ports of the reference signal resource is not greater than the maximum number of ports. The parameter requirements include the minimum and maximum number of ports of the reference signal resource, and it is desired that the number of ports of the reference signal resource does not exceed the minimum and maximum number of ports.

[0095] In some embodiments, the ports of the reference signal may also have other names. For example, 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; wherein, 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, that is, the antenna port of the reference signal mapped to the reference signal resource. The antenna port of the reference signal is also referred to as the port of the reference signal. The number of ports of the reference signal is also the number of antenna ports of the reference signal.

[0096] The number of ports of the reference signal resource for carrying the reference signal will be described below.

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

[0098] The total number of ports of the reference signal resource.

[0099] In some embodiments, corresponding to the reference signal being transmitted multiple times, the parameter requirement includes the total number of ports of the reference signal resource within the measurement range. For example, within the measurement range, the reference signal is transmitted 2 times on the reference signal resource. It is transmitted once at time T1 and once again at time T2, and correspondingly measured 2 times, that is, the reference signal transmitted at time T1 is measured once, and the reference signal transmitted at time T2 is measured once; wherein the number of ports of the reference signal transmitted at time T1 on the reference signal resource is P1, and the number of ports of the reference signal transmitted at time T2 on the reference signal resource is P2; the total number of ports of the reference signal resource within the measurement range is the sum of P1 and P2. Generally, within the measurement range, the reference signal is transmitted N times on the reference signal resource. It is transmitted the nth time at time Tn, and correspondingly measured N times; wherein the number of ports of the reference signal transmitted the nth time on the reference signal resource is Pn; the total number of ports of the reference signal resource within the measurement range is the sum of the port numbers of the reference signal transmitted N times. The parameter requirement is the total number of ports of the reference signal resource within the measurement range. By making requirements from the total number of ports of the reference signal resource, it does not lose the flexibility of adjusting the number of ports of the reference signal for each transmission or the flexibility of adjusting the number of reference signal transmissions, making the transmission feasibility of the reference signal stronger and enabling reliable transmission; thus reliably predicting the channel state.

[0100] As a possible example, the total number of ports of the reference signal resource includes at least one of the following:

[0101] The specific total number of ports of the reference signal resource; the minimum total number of ports of the reference signal resource; the maximum total number of ports of the reference signal resource; the minimum and maximum total number of ports of the reference signal resource. It should be understood that the parameter requirements include the specific total number of ports of the reference signal resource within the measurement range. It is desired that the total number of ports of the reference signal resource within the measurement range is not greater than this specific total number of ports and not less than this specific total number of ports. The parameter requirements include the minimum total number of ports of the reference signal resource within the measurement range. It is desired that the total number of ports of the reference signal resource within the measurement range is not less than the minimum total number of ports. The parameter requirements include the maximum total number of ports of the reference signal resource within the measurement range. It is desired that the total number of ports of the reference signal resource within the measurement range is not greater than the maximum total number of ports. The parameter requirements include the minimum and maximum total number of ports of the reference signal resource within the measurement range. It is desired that the total number of ports of the reference signal resource within the measurement range does not exceed the minimum and maximum total number of ports.

[0102] The port number of the measurement reference signal resource is described below.

[0103] As an example, the port number of the measurement reference signal resource includes the total number of ports of the measurement reference signal resource.

[0104] In some embodiments, corresponding to measuring multiple reference signal resources, the parameter requirements include the total number of ports of the measurement reference signal resource. For example, corresponding to measuring 2 reference signal resources, where the port number of the first reference signal resource is P1 and the port number of the second reference signal resource is P2; the total number of ports of the measurement reference signal resource is the sum of P1 and P2. Generally, corresponding to measuring N reference signal resources, where the port number of the nth reference signal resource is Pn; the total number of ports of the measurement reference signal resource is the sum of the port numbers of these N reference signal resources.

[0105] The parameter requirement is the total number of ports of the measurement reference signal resource. By putting forward requirements for the total number of ports of the measurement reference signal resource, while not losing the flexibility of adjusting the port number of each reference signal resource or the flexibility of adjusting the number of reference signal resources, the transmission feasibility of the reference signal is stronger and can be transmitted reliably; thus, the channel state can be predicted reliably.

[0106] As a possible example, the total number of ports of the measurement reference signal resource includes at least one of the following:

[0107] The specific total number of ports of the measurement reference signal resource; the minimum total number of ports of the measurement reference signal resource; the specific maximum number of ports of the measurement reference signal resource; the specific minimum number of ports of the measurement reference signal resource and the specific maximum number of ports of the measurement reference signal resource. It should be understood that the parameter requirements include the specific total number of ports of the measured reference signal resource, and it is desired that the total number of ports of the measured reference signal resource is neither less than nor greater than this specific total number of ports. The parameter requirements include the minimum total number of ports of the measured reference signal resource, and it is desired that the total number of ports of the measured reference signal resource is not less than this minimum total number of ports. The parameter requirements include the maximum total number of ports of the measured reference signal resource, and it is desired that the total number of ports of the measured reference signal resource is not greater than this maximum total number of ports. The parameter requirements include the minimum total number of ports and the maximum total number of ports of the measured reference signal resource, and it is desired that the total number of ports of the measured reference signal resource does not exceed the minimum total number of ports and the maximum total number of ports.

[0108] The following describes the transmission times of the reference signal.

[0109] Predicting the channel state requires measuring the reference signals at multiple time points, or requires measuring the reference signals at multiple frequency domain positions, or requires measuring the reference signals at multiple time-frequency positions. The parameter requirements include the transmission times of the reference signal, which can be understood as the measurement times of the reference signal.

[0110] As an example, the transmission times of the reference signal include at least one of the following:

[0111] The specific transmission times of the reference signal; the minimum transmission times of the reference signal; the maximum transmission times of the reference signal; the minimum transmission times and the maximum transmission times of the reference signal; within a specific length range, the transmission times of the reference signal; within a minimum length range, the transmission times of the reference signal; within a maximum length range, the transmission times of the reference signal. It should be understood that if the transmission times of the reference signal are too few, the prediction method cannot extract the variation law of the channel and it is difficult to predict the future channel state. If the transmission times of the reference signal are too many, limited by the capability range of the prediction method, the reference signals with too many transmission times will cause measurement confusion or measurement errors. Therefore, the parameter requirements include the transmission times of the reference signal, which helps to improve the reliability of the predicted channel state.

[0112] The following describes the number of reference signal resources.

[0113] It should be understood that the reference signal resources are used to carry the reference signals, and predicting the channel state requires measuring the reference signals on multiple reference signal resources. Therefore, the parameter requirements can include the number of reference signal resources.

[0114] As an example, the number of reference signal resources includes at least one of the following:

[0115] The specific number of reference signal resources; the minimum number of reference signal resources; the maximum number of reference signal resources; the minimum number and the maximum number of reference signal resources.

[0116] For example, the specific number of reference signal resources includes the specific number of reference signal resources with different time domain positions. Different reference signal resources are required to be at different time domain positions. As another example, the specific number of reference signal resources includes the specific number of reference signal resources with different frequency domain positions. Different reference signal resources are required to be at different frequency domain positions.

[0117] The number of reference signal resource groups is described below. Each reference signal resource group includes a plurality of reference signal resources, and different reference signal resource groups are located at different time domain positions.

[0118] As an example, the number of reference signal resource groups includes at least one of the following:

[0119] The specific number of reference signal resource groups; the minimum number of reference signal resource groups; the maximum number of reference signal resource groups; the minimum number and the maximum number of reference signal resource groups. It should be understood that the parameter requirements include the specific number of reference signal resource groups. It is desired that the number of reference signal resource groups is not less than this specific number and not greater than this specific number. The parameter requirements include the minimum number of reference signal resource groups. It is desired that the number of reference signal resource groups is not less than this minimum number. The parameter requirements include the maximum number of reference signal resource groups. It is desired that the number of reference signal resource groups is not greater than this maximum number. The parameter requirements include the minimum number and the maximum number of reference signal resource groups. It is desired that the number of reference signal resource groups does not exceed this minimum number and this maximum number.

[0120] The number of reference signal resources in the reference signal resource group is described below.

[0121] In some embodiments, the number of reference signal resources in different reference signal resource groups is the same.

[0122] In some embodiments, the frequency domain positions of the reference signal resources with the same index number in different reference signal resource groups are the same.

[0123] In some embodiments, the reference signal antenna ports with the same index number in the reference signal resources with the same index number in different reference signal resource groups are the same antenna ports. The channels corresponding to different symbols transmitted by the same antenna port can be inferred from each other.

[0124] In some embodiments, in ascending order of the index number of the reference signal resource group, the number of reference signal resources in the reference signal resource group decreases; or, in chronological order of the reference signal resource group, the number of reference signal resources in the reference signal resource group decreases. Among them, other reference signal resource groups except the first reference signal resource group are subsets of the first reference signal resource group. Or, the (n + 1)-th reference signal resource group is a subset of the n-th reference signal resource group, where n is a positive integer.

[0125] In some embodiments, in ascending order of the index number of the reference signal resource group, the number of reference signal resources in the reference signal resource group increases; or, in chronological order of the reference signal resource group, the number of reference signal resources in the reference signal resource group increases. Among them, other reference signal resource groups except the last reference signal resource group are subsets of the last resource group. Or, the (n - 1)-th reference signal resource group is a subset of the n-th reference signal resource group, where n is a positive integer.

[0126] The power bias information of the reference signal is described below.

[0127] It should be understood that the quality of the received reference signal affects the reliability of predicting the channel state. The parameter requirements include the power bias information of the reference signal to control the quality of the reference signal, thereby controlling the reliability of predicting the channel state.

[0128] The angular spacing between reference signals is described below.

[0129] It should be understood that the transmission of the reference signal is directional. The reference signal resource carries the reference signal, and the transmission direction of the reference signal is also referred to as the direction of the reference signal resource carrying the reference signal. The angular spacing between reference signals is reflected as the angular spacing of the reference signals between reference signal resources, and is also referred to as the angular spacing between reference signal resources.

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

[0131] The specific angular spacing between reference signals; the minimum angular spacing between reference signals; the maximum angular spacing between reference signals; the minimum angular spacing and the maximum spacing between reference signals; the angular spacing of the first dimension between reference signals; the angular spacing between the first dimension and the second dimension between reference signals. Among them, the first dimension and the second dimension are different, the first dimension is one of the horizontal dimension and the vertical dimension, and the second dimension is the other of the horizontal dimension and the vertical dimension.

[0132] The angular range between reference signals is described below.

[0133] As an example, the angular range between reference signals includes at least one of the following:

[0134] The angular range of the first dimension between reference signals; for example, the parameter requirements include the angular range of the horizontal dimension between reference signals. Another example is that the parameter requirements include the angular range of the vertical dimension between reference signals.

[0135] The angular range of the first dimension and the angular range of the second dimension between reference signals; wherein, the first dimension and the second dimension are orthogonal to each other. For example, the parameter requirements include the angular range of the horizontal dimension between reference signals and the angular range of the vertical dimension.

[0136] The mapping relationship between the time-domain order of the reference signal and the transmission direction of the reference signal is described below.

[0137] As an example, the mapping relationship between the time-domain order of the reference signal and the transmission direction of the reference signal includes at least one of the following:

[0138] In the order of time domain, the vertical angle of the transmission direction of the reference signal increases.

[0139] In the order of time domain, the vertical angle of the transmission direction of the reference signal decreases.

[0140] In the order of time domain, the counterclockwise rotation of the transmission direction of the reference signal.

[0141] In the order of time domain, the clockwise rotation of the transmission direction of the reference signal.

[0142] The mapping relationship between the frequency-domain order of the reference signal and the transmission direction of the reference signal is described below.

[0143] 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:

[0144] In the order of frequency domain from low to high, the vertical angle of the transmission direction of the reference signal increases.

[0145] In the order of frequency domain from low to high, the vertical angle of the transmission direction of the reference signal decreases.

[0146] In the order of frequency domain from low to high, the counterclockwise rotation of the transmission direction of the reference signal.

[0147] In the order of frequency domain from low to high, the clockwise rotation of the transmission direction of the reference signal.

[0148] The mapping relationship between the index number of the reference signal resource and the transmission direction of the reference signal is described below.

[0149] 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:

[0150] In the order of the reference signal resource index number, the vertical angle of the transmission direction of the reference signal increases.

[0151] In the order of the reference signal resource index number, the vertical angle of the transmission direction of the reference signal decreases.

[0152] In the order of the reference signal resource index number, the counterclockwise rotation of the transmission direction of the reference signal.

[0153] In the order of the reference signal resource index number, the clockwise rotation of the transmission direction of the reference signal.

[0154] The mapping relationship between the order of the reference signal resources in the reference signal configuration information and the transmission direction of the reference signal is described below.

[0155] As an example, the mapping relationship between the order of the reference signal resources in the reference signal configuration information and the transmission direction of the reference signal includes at least one of the following:

[0156] In the order of the reference signal resources in the configuration information, the vertical angle of the transmission direction of the reference signal increases.

[0157] In the order of the reference signal resources in the configuration information, the vertical angle of the transmission direction of the reference signal decreases.

[0158] In the order of the reference signal resources in the configuration information, the counterclockwise rotation of the transmission direction of the reference signal.

[0159] In the order of the reference signal resources in the configuration information, the clockwise rotation of the transmission direction of the reference signal.

[0160] The expected time-domain spacing between reference signal resources, and the maximum allowable difference between the actual time-domain spacing between reference signal resources and the expected time-domain spacing between reference signal resources are described below. Among them, the maximum allowable difference between the actual time-domain spacing between reference signal resources and the expected time-domain spacing between reference signal resources can also be referred to as the maximum allowable difference between the actual time-domain spacing between reference signal resources and the expected time-domain spacing between reference signal resources.

[0161] The desired time-domain spacing between reference signal resources is the time-domain spacing between reference signal resources expected by the first node. The actual time-domain spacing between reference signal resources is the time-domain spacing between actual reference signal resources. It is difficult to maintain the desired time-domain spacing between each reference signal resource. Allowing a deviation between the actual time-domain spacing and the desired time-domain spacing increases the feasibility of predicting the channel state, thereby increasing the reliability of predicting the channel state. The parameter requirement includes the maximum difference between the actual time-domain spacing between reference signal resources and the desired time-domain spacing between reference signal resources, so as to prevent the gap between the actual time-domain spacing and the desired time-domain spacing from exceeding the allowable value and making the prediction of the channel state unreliable.

[0162] The following describes the channel quality degradation value corresponding to the difference between the actual time-domain spacing between corresponding reference signal resources and the desired time-domain spacing between reference signal resources.

[0163] It should be understood that there is a deviation between the actual time-domain spacing and the desired time-domain spacing, and this deviation will lead to a decrease in the accuracy of the predicted channel state, thereby degrading the channel quality. Different deviation values result in different channel quality degradation values. The parameter requirement includes the channel quality degradation value corresponding to the deviation value, so that the second communication node can ensure the reliability of predicting the channel state when flexibly configuring or transmitting reference signals. Among them, the parameters characterizing the 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).

[0164] The following describes the maximum allowable difference between the actual time-domain spacing between reference signal resources corresponding to the channel quality degradation value and the desired time-domain spacing between reference signal resources. Among them, the maximum allowable difference between the actual time-domain spacing between reference signal resources corresponding to the channel quality degradation value and the desired time-domain spacing between reference signal resources can also be referred to as the maximum difference between the actual time-domain spacing between allowable reference signal resources corresponding to the channel quality degradation value and the desired time-domain spacing between reference signal resources.

[0165] It should be understood that there is a deviation between the actual time-domain spacing and the desired time-domain spacing. This deviation will lead to a decrease in the accuracy of the predicted channel state, thereby degrading the channel quality. Different deviation values result in different degrees of channel quality degradation. The parameter requirement includes the maximum difference between the actual time-domain spacing between admissible reference signal resources and the desired time-domain spacing between reference signal resources, so that the second node can ensure the reliability of the predicted channel state when flexibly configuring or transmitting reference signals.

[0166] The following explains the maximum admissible difference between the actual time-domain position between reference signal resources and the desired time-domain position between reference signal resources. Herein, the maximum admissible difference between the actual time-domain position between reference signal resources and the desired time-domain position between reference signal resources can also be referred to as the maximum difference between the actual time-domain position between admissible reference signal resources and the desired time-domain position between reference signal resources.

[0167] It should be understood that the desired time-domain spacing between reference signal resources is the time-domain spacing desired by the first node. Based on the desired time-domain spacing, the desired time-domain position of the reference signal resources is obtained, which 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. It is difficult for each reference signal resource to maintain the desired time-domain position. Allowing a deviation between the actual time-domain position and the desired time-domain position increases the feasibility of predicting the channel state, thereby enhancing the reliability of predicting the channel state. The parameter requirement includes the maximum difference between the actual time-domain position between reference signal resources and the desired time-domain position between reference signal resources to prevent the gap between the actual time-domain position and the desired time-domain position from exceeding the admissible value and making the prediction of the channel state unreliable.

[0168] The following explains the channel quality degradation value corresponding to the difference between the actual time-domain position between reference signal resources and the desired time-domain position between reference signal resources.

[0169] It should be understood that there is a deviation between the actual time-domain position and the desired time-domain position. This deviation will lead to a decrease in the accuracy of the predicted channel state, thereby degrading the channel quality. Different deviation values result in different degrees of channel quality degradation. The parameter requirement includes 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.

[0170] The following describes the maximum allowable difference between the actual time-domain position among reference signal resources corresponding to a channel quality degradation value and the expected time-domain position among the reference signal resources. Herein, the maximum allowable difference between the actual time-domain position among reference signal resources corresponding to a channel quality degradation value and the expected time-domain position among the reference signal resources may also be referred to as the maximum difference between the actual time-domain position and the expected time-domain position among the allowable reference signal resources corresponding to the channel quality degradation value.

[0171] It should be understood that there is a deviation between the actual time-domain position and the expected time-domain position, and this deviation will lead to a decrease in the accuracy of the predicted channel state, thereby causing a degradation in channel quality; different deviation values result in different channel quality degradation values; the parameter requirement includes the maximum difference between the actual time-domain position and the expected time-domain position among the allowable reference signal resources corresponding to the 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.

[0172] S102. Receive reference signal configuration information and receive reference signals according to the reference signal configuration information.

[0173] In some embodiments, after the second node receives the first indication information sent by the first node, it determines the 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 reference signals according to the reference signal configuration information.

[0174] As an example, the reference signal configuration information includes or is used to indicate at least one of the following:

[0175] The time-domain position of the reference signal;

[0176] The frequency-domain position of the reference signal;

[0177] The transmission direction of the reference signal;

[0178] The range of the transmission direction of the reference signal;

[0179] The angular range between reference signals;

[0180] The angular spacing between reference signals;

[0181] The index number of the reference signal;

[0182] The identification number of the reference signal;

[0183] The number of reference signal resources for carrying reference signals;

[0184] The number of ports of the reference signal;

[0185] The number of transmissions of the reference signal;

[0186] The number of reference signal resource groups;

[0187] The power offset information of the reference signal;

[0188] The mapping relationship between the time domain position of the reference signal and the transmission direction of the reference signal;

[0189] The mapping relationship between the frequency domain position of the reference signal and the transmission direction of the reference signal;

[0190] The mapping relationship between the serial number of the reference signal and the transmission direction of the reference signal.

[0191] Wherein, 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.

[0192] As a possible example, the time domain position of the reference signal includes the OFDM symbol position of the reference signal resource for carrying the reference signal, and the OFDM symbol positions of the reference signal resources in the same reference signal resource set are the same. That is to say, in the reference signal configuration information, an OFDM symbol position is configured for each reference signal resource respectively, and the OFDM symbol positions of all the reference signal resources in the same reference signal resource set are the same.

[0193] For example, the reference signal resource set includes the first reference signal resource and the second reference signal resource; the OFDM symbol position configured for the first reference signal resource, the OFDM symbol position configured for the second reference signal resource; wherein, the OFDM symbol position configured for the first reference signal resource is the same as the OFDM symbol position configured for the second reference signal resource. Generally, the reference signal resource set includes the first reference signal resource, the second reference signal resource,..., the Nth reference signal resource, the OFDM symbol position configured for the first reference signal resource is L1, the OFDM symbol position configured for the second reference signal resource is L2,..., the OFDM symbol position configured for the Nth reference signal resource is LN; L1, L2,..., LN are equal or the same. The OFDM symbol positions of all the reference signal resources in the same reference signal resource set are the same, which is beneficial to ensuring equal spacing between adjacent reference signal resources, thereby being beneficial to improving the performance of predicting the channel state and enhancing the reliability of the predicted channel state. Among them, the reference signal resources included in the reference signal resource set are used to predict the channel state.

[0194] As another possible example, the time domain position of the reference signal includes the OFDM symbol position of the reference signal resource for carrying the reference signal, and the OFDM symbol positions of all reference signal resources are the same. That is to say, in the reference signal configuration information, an OFDM symbol position is configured for each reference signal resource respectively, and the OFDM symbol positions of all reference signal resources are the same.

[0195] For example, corresponding to the report of the same predicted channel state, the reference signal configuration information includes a first reference signal resource and a second reference signal resource; an OFDM symbol position is configured for the first reference signal resource, and an OFDM symbol position is configured for the second reference signal resource; wherein, the OFDM symbol position configured for the first reference signal resource is the same as the OFDM symbol position configured for the second reference signal resource. As another example, 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, the OFDM symbol position configured for the second reference signal resource is L2,..., the OFDM symbol position configured for the Nth reference signal resource is LN; L1, L2,..., LN are equal or the same. Among them, the reference signal resources included in the reference signal configuration information are used to predict the channel state. Corresponding to the report of the same predicted channel state, the OFDM symbol positions of all reference signal resources are the same, which is beneficial to ensuring that the spacing between adjacent reference signal resources is equal, thereby being beneficial to improving the performance of predicting the channel state and enhancing the reliability of the predicted channel state.

[0196] As another possible example, the time domain position of the reference signal includes the OFDM symbol position of the reference signal resource set to which the reference signal resource for carrying the reference signal belongs. The reference signal resource set includes N reference signal resources, and the N reference signal resources share the OFDM symbol position of the reference signal resource set, where N is a positive integer. That is to say, the reference signal configuration information includes a reference signal resource set, the reference signal resource set includes N reference signal resources, and an OFDM symbol position is configured for the reference signal resource set; wherein, the N reference signal resources in the reference signal resource set apply the OFDM symbol position of the reference signal resource set.

[0197] It should be understood that by configuring the OFDM symbol position for the reference signal resource set, the N reference signal resources in the reference signal resource set share this configuration of the OFDM symbol position; thus, the OFDM symbol positions of all reference signal resources in the same reference signal resource set are the same, which is beneficial to ensuring that the spacing between adjacent reference signal resources is equal, thereby being beneficial to improving the performance of predicting the channel state and enhancing the reliability of the predicted channel state.

[0198] As another possible example, the time-domain position of the reference signal includes the OFDM symbol position of the reference signal resource set to which the reference signal resource for 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 further includes or is further used to indicate at least one of the following:

[0199] The time-domain spacing between reference signal resources;

[0200] The time-domain offset between each reference signal resource and the OFDM symbol position of the reference signal resource set.

[0201] For example, the reference signal resource set includes the first reference signal resource, the second reference signal resource,..., the Nth reference signal resource; the OFDM symbol position is configured for the reference signal resource set, for example, it is L; the time-domain spacing between reference signal resources is configured for the reference signal resource set, for example, it is d; the offset O1 from the OFDM symbol position L is configured for the first reference signal resource, the offset O2 from the OFDM symbol position L is configured for the second reference signal resource,..., and the offset ON from the OFDM symbol position L is configured for the Nth reference signal resource. Among them, 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 the position L is the actual position of each reference signal resource. In this way, the target positions of each reference signal resource are provided by the OFDM position L of the reference signal resource set and the spacing d between reference signal resources, so that the target positions have the same spacing, which is beneficial to improving the accuracy of predicting the channel state; and the actual positions of each reference signal resource are provided by the offsets of each reference signal resource relative to the position L, so that the actual positions have a certain degree of flexibility, thereby increasing the feasibility of the solution of the embodiments of the present disclosure; because it is difficult to keep each reference signal resource at the same OFDM symbol position, the reliability of the predicted channel state is improved.

[0202] As another example, the reference signal configuration information is used to indicate a reference signal resource set. The reference signal resource set includes N reference signal resources, where N is a positive integer. The reference signal configuration information is further used to indicate at least one of the following:

[0203] The time-domain spacing between reference signal resources;

[0204] The OFDM symbol position of the first reference signal resource, and the time-domain offset between the other reference signal resources except the first reference signal resource among the N reference signal resources and the OFDM symbol position of the first reference signal resource. The first reference signal resource is one of the N reference signal resources.

[0205] That is to say, the reference signal configuration information includes a reference signal resource set, the reference signal resource set includes N reference signal resources, a time domain spacing between the reference signal resources is configured for the reference signal resource set; an OFDM symbol position is configured for one of the N reference signal resources, and a time domain offset between the reference signal resource and the OFDM symbol position is configured for each of the remaining reference signal resources respectively.

[0206] For example, the reference signal resource set includes a first reference signal resource, a second reference signal resource,..., an Nth reference signal resource; a time domain spacing between the reference signal resources is configured for the reference signal resource set, for example, it is d; an OFDM symbol position is configured for the nth reference signal resource, for example, it is L; an offset from the OFDM symbol position L is configured for the other reference signal resources except the nth reference signal resource, for example, an offset O1 from the OFDM symbol position L is configured for the first reference signal resource, an offset O2 from the OFDM symbol position L is configured for the second reference signal resource,..., an offset ON from the OFDM symbol position L is configured for the Nth reference signal resource. Among them, 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 between each reference signal resource and the 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 is beneficial to improving the accuracy of predicting the 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 flexibility, thereby increasing the feasibility of the solution of the embodiments of the present disclosure; because it is difficult to keep each reference signal resource at the same OFDM symbol position; thus, the reliability of the predicted channel state is improved.

[0207] As another example, the reference signal configuration information is used to indicate a reference signal resource set, the reference signal resource set includes N reference signal resources, N is a positive integer, and the reference signal configuration information is further used to indicate at least one of the following:

[0208] The time domain spacing d between the reference signal resources;

[0209] The OFDM symbol position of the first reference signal resource among the N reference signal resources, and for each of the other reference signal resources among the N reference signal resources except the first reference signal resource, the offset between the time domain spacing between this reference signal resource and the reference signal resource before it and the time domain spacing d.

[0210] That is to say, the reference signal configuration information includes a set of reference signal resources. The set of reference signal resources includes N reference signal resources. A time domain spacing d is configured for the reference signal resources in the set of reference signal resources. An OFDM symbol position L1 is configured for the first reference signal resource, and for each of the remaining reference signal resources, an offset of the time domain spacing between the current reference signal resource and the previous reference signal resource with respect to the time domain spacing d is configured.

[0211] For example, the set of reference signal resources includes N reference signal resources, which are the first reference signal resource, the second reference signal resource,..., the Nth reference signal resource in chronological order. A time domain spacing, for example d, is configured for the set of reference signal resources. An OFDM symbol position, for example L, is configured for the first reference signal resource. For the other reference signal resources except the first reference signal resource, an offset of the time domain spacing between the current reference signal resource and the previous reference signal resource with respect to the time domain spacing d is configured. For example, an offset O2 of the time domain spacing of the second reference signal resource relative to the first reference signal resource with respect to the time domain spacing d is configured for the second reference signal resource, an offset O3 of the time domain spacing of the third reference signal resource relative to the second reference signal resource with respect to the time domain spacing d is configured for the third reference signal resource,..., and an offset ON of the time domain spacing of the Nth reference signal resource relative to the (N - 1)th reference signal resource with respect to the time domain spacing d is configured for the Nth reference signal resource. Among them, by configuring the offset of the time domain spacing between the current reference signal resource and the previous reference signal resource with respect to the time domain spacing d, not only the spacing between the reference signal resources tends to be consistent, but also the actual positions have a certain degree of flexibility, thereby increasing the feasibility of the solution of the embodiments of the present disclosure; because it is difficult to keep the OFDM symbol positions of the reference signal resources the same; thus improving the reliability of the predicted channel state.

[0212] In some embodiments, the reference signal configuration information further includes or is used to indicate the time domain spacing between the reference signal resources, where the time domain spacing between the reference signal resources is an integer multiple of N OFDM symbols, and N is the number of OFDM symbols included in a time slot.

[0213] For example, a time slot includes 14 OFDM symbols, and the time domain spacing between the reference signal resources is an integer multiple of 14 OFDM symbols. Another example is that a time slot includes 7 OFDM symbols, and the time domain spacing between the reference signal resources is an integer multiple of 7 OFDM symbols.

[0214] 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 position indicated by the reference signal.

[0215] S103. Predict the channel state based on the reference signal to obtain the predicted channel state.

[0216] In some embodiments, after receiving the reference signal, the first node may predict the channel state at a future time based on the reference signal to obtain the predicted channel state.

[0217] As an example, the first node may predict the channel state at a future time based on a preset prediction method and the reference signal to obtain the predicted channel state. The preset prediction method is predefined or configured by the network side.

[0218] In some embodiments, the predicted channel state includes at least one of the following:

[0219] Channel quality indication, precoding matrix, reference signal received power, indication of the reference signal resource.

[0220] As an example, the indication of the reference signal resource includes at least one of the following ways:

[0221] One way is: The first node selects K reference signal resources from the first set of reference signal resources indicated by the reference signal configuration information, and reports the indication of the selected K reference signal resources to the second node, where all the first set of reference signal resources carry reference signals.

[0222] Another way is: The first node selects M reference signal resources from the second set 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, where at least one of the second set of reference signal resources does not carry a reference signal.

[0223] Another way is: The reference signal configuration information indicates the first set of reference signal resources and the second set of reference signal resources, where all the first set of reference signal resources carry reference signals, and the reference signal configuration information indicates the mapping relationship between the first set of reference signal resources and the second set 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 based on the measurement of the first set of reference signals and the mapping relationship between the first set of reference signal resources and the second set of reference signal resources, and reports the indication of the selected M reference signal resources to the second node.

[0224] The reference signal resource does not carry a reference signal, which can be understood as a reference signal resource with zero power or a virtual reference signal resource, thereby saving actual resource overhead and undertaking the logical function for prediction. Based on the measurement of the first set of reference signals and the mapping relationship between the first set of reference signal resources and the second set 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 for saving the actual overhead of the second set of reference signal resources.

[0225] S104. Send the predicted channel state to the second node.

[0226] In some embodiments, after the first node predicts the reference signal to obtain 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 can match the data transmission time point based on the predicted channel state, thereby improving the performance of the communication system in transmitting data.

[0227] In some embodiments, the first node receives the third indication information sent by the second node, and the third indication information is used to indicate the prediction of the channel state at the first time domain position. The first node can predict the channel state at the first time domain position based on the third indication information. That is, the predicted channel state is the predicted channel state at the first time domain position.

[0228] As an example, sending the predicted channel state to the second node includes:

[0229] Sending the predicted channel state at the first time domain position to the second node, and / or sending the predicted channel state and the second time domain position at the second time domain position to the second node, where the first time domain position is different from the second time domain position, and the second time domain position is determined by the first node.

[0230] That is to say, if the second node indicates the prediction of the channel state at the first time domain position, the first node can send the predicted channel state at the first time domain position to the second node, or send the predicted channel state and the second time domain position at the second time domain position to the second node, or send the predicted channel state at the first time domain position, the predicted channel state at the second time domain position, and the second time domain position to the second node.

[0231] It should be understood that the first node measures the channel and predicts the channel; while 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, when the first node determines the first time-domain position by measuring the channel, it is not conducive to predicting the channel state; or the channel state at the first time-domain position is not 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. The second time-domain position is conducive to predicting the channel state, or the second time-domain position is conducive to characterizing the future channel state. Furthermore, the first node reports the channel state at the second time-domain position and the second time-domain position, thereby improving the reliability of the predicted channel state. After receiving the channel state at the second time-domain position and the second time-domain position, the second node can adjust the time-domain position of the reference signal resource 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 that can better characterize the future channel state, improving the accuracy of the determined data transmission strategy and helping to improve the performance of the communication system in transmitting data.

[0232] As another example, sending the predicted channel state to the second node includes:

[0233] Sending the channel state of the predicted first time-domain position to the second node, and / or sending the fourth indication information to the second node, where the fourth indication information is used to indicate at least one of the following:

[0234] The time-domain position of the reference signal resource corresponding to the best prediction performance;

[0235] The best prediction performance.

[0236] That is to say, when 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 send the fourth indication information to the second node, or send the channel state of the predicted first time-domain position and the fourth indication information to the second node.

[0237] It should be understood that the prediction performances corresponding to different time-domain positions of the reference signal resource are different, and there is a time-domain position of the reference signal resource corresponding to the best 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, so that the second node can adjust the time-domain position of the reference signal resource according to the time-domain position of the reference signal resource corresponding to the best prediction performance, thereby improving the performance of channel state prediction. The first node indicates the possible best prediction performance to the second node, so that the second node can improve the performance of channel prediction by adjusting the time-domain position of the reference signal resource.

[0238] Based on Figure 2In the illustrated embodiment, the first node predicts the channel state and has requirements for the parameters of the reference signal. If the reference signal configuration information does not meet the parameter requirements, or 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, or the accuracy of the predicted channel state deteriorates, or the accuracy of the predicted channel state does not meet the usage requirements. Therefore, in the embodiments of the present disclosure, the first node indicates to the second node the parameter requirements for the reference signal for predicting the channel state, 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 further improving the reliability of the predicted channel state obtained based on the reference signal, which helps to improve the performance of the communication system in transmitting data.

[0239] In some embodiments, the first node may further send second indication information to the second node, and the second indication information is used to indicate at least one of the following:

[0240] The time domain position of the predicted channel state;

[0241] The frequency domain position of the predicted channel state;

[0242] The number of predicted channel states;

[0243] The method for predicting the channel state.

[0244] The first node and the second node may reserve at least one of the following: the time domain position of the channel state, the frequency domain position of the channel state, the number of channel states, the method for predicting the channel state. For example, the second node configures the above content for the first node. For another example, the first node and the second node default the above content. The reservation method is determined before channel measurement and may not be adapted to the channel conditions, thereby reducing the performance of predicting the channel state and the reliability of predicting the channel state. However, by sending the second indication information to the second node to report the above content, the first node can make a choice based on the measurement of the channel, thereby improving the performance of channel prediction and the reliability of channel prediction.

[0245] In some embodiments, as Figure 4 shown, the embodiments of the present disclosure provide a communication method, which is applied to the second node, and the second node may be the second node 120 shown above Figure 1 The method may include the following steps:

[0246] S201. Receive the first indication information.

[0247] Among them, the first indication information is used to indicate the parameter requirements for the reference signal for predicting the channel state. The parameter requirements include at least one of the following:

[0248] Time interval of the reference signal;

[0249] Frequency domain interval of the reference signal;

[0250] Number of ports of the reference signal;

[0251] Number of ports of the reference signal resource for carrying the reference signal;

[0252] Number of ports of the measurement reference signal resource;

[0253] Number of transmission times of the reference signal;

[0254] Number of reference signal resources;

[0255] Number of reference signal resource groups;

[0256] Number of reference signal resources in the reference signal resource group;

[0257] Spacing between reference signal resource groups;

[0258] Power offset information of the reference signal;

[0259] Angular interval between reference signals;

[0260] Angular range between reference signals;

[0261] Mapping relationship between the time domain order of the reference signal and the transmission direction of the reference signal;

[0262] Mapping relationship between the frequency domain order of the reference signal and the transmission direction of the reference signal;

[0263] Mapping relationship between the index number of the reference signal resource and the transmission direction of the reference signal;

[0264] Mapping relationship between the order of the reference signal resource in the reference signal configuration information and the transmission direction of the reference signal;

[0265] Expected time domain interval between reference signal resources;

[0266] Maximum allowable difference between the actual time domain interval between reference signal resources and the expected time domain interval between reference signal resources;

[0267] Channel quality degradation value corresponding to the difference between the actual time domain interval between reference signal resources and the expected time domain interval between reference signal resources;

[0268] Maximum allowable difference between the actual time domain interval between reference signal resources corresponding to the channel quality degradation value and the expected time domain interval between reference signal resources;

[0269] The maximum allowable difference between the actual time-domain position of reference signal resources and the expected time-domain position of reference signal resources;

[0270] The channel quality degradation value corresponding to the difference between the actual time-domain position of reference signal resources and the expected time-domain position of reference signal resources;

[0271] The maximum allowable difference between the actual time-domain position of reference signal resources and the expected time-domain position of reference signal resources corresponding to the channel quality degradation value.

[0272] For the specific descriptions of the various requirements in the parameter requirements, reference may be made to the corresponding descriptions in the embodiments shown above, Figure 2 which will not be elaborated herein.

[0273] S202. Transmit reference signal configuration information and transmit reference signals based on the reference signal configuration information.

[0274] Upon receiving the first indication information, the second node determines the reference signal configuration information based on the first indication information, and then transmits reference signals based on the reference signal configuration information, so that the transmitted reference signals can meet the parameter requirements of the predicted channel state for the reference signals.

[0275] As an example, the reference signal configuration information includes or is used to indicate one of the following:

[0276] The time-domain position of the reference signal;

[0277] The frequency-domain position of the reference signal;

[0278] The transmission direction of the reference signal;

[0279] The range of the transmission direction of the reference signal;

[0280] The angular range between reference signals;

[0281] The angular spacing between reference signals;

[0282] The index number of the reference signal;

[0283] The identification number of the reference signal;

[0284] The number of reference signal resources for carrying reference signals;

[0285] The number of ports of the reference signal;

[0286] The number of transmission times of the reference signal;

[0287] The number of reference signal resource groups;

[0288] The power bias information of the reference signal;

[0289] The mapping relationship between the time-domain position of the reference signal and the transmission direction of the reference signal;

[0290] The mapping relationship between the frequency-domain position of the reference signal and the transmission direction of the reference signal;

[0291] The mapping relationship between the index number of the reference signal and the transmission direction of the reference signal.

[0292] In some embodiments, the reference signal configuration information further includes or is used to indicate the time-domain spacing between reference signal resources, where 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 one time slot.

[0293] In some embodiments, the time-domain position of the reference signal includes the OFDM symbol position of the reference signal resource for carrying the reference signal, and the OFDM symbol positions of the reference signal resources in the same reference signal resource set are the same.

[0294] In some embodiments, the time-domain position of the reference signal includes the OFDM symbol position of the reference signal resource for carrying the reference signal, and the OFDM symbol positions of all reference signal resources are the same.

[0295] In some embodiments, the time-domain position of the reference signal includes the OFDM symbol position of the reference signal resource set to which the reference signal resource for carrying the reference signal belongs. The reference signal resource set includes N reference signal resources, and the N reference signal resources share the OFDM symbol position of the reference signal resource set, where N is a positive integer.

[0296] In some embodiments, the time-domain position of the reference signal includes the OFDM symbol position of the reference signal resource set to which the reference signal resource for carrying the reference signal belongs. The reference signal resource set includes N reference signal resources, where N is a positive integer, and the reference signal configuration information further includes or is further used to indicate at least one of the following:

[0297] The time-domain spacing between reference signal resources;

[0298] The time-domain offset between each reference signal resource and the OFDM symbol position of the reference signal resource set.

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

[0300] The time-domain spacing between reference signal resources;

[0301] The OFDM symbol position of the first reference signal resource, the time domain offset between the other reference signal resources except the first reference signal resource among the N reference signal resources and the OFDM symbol position of the first reference signal resource, where the first reference signal resource is one of the N reference signal resources.

[0302] In some embodiments, the reference signal configuration information is used to indicate a set of reference signal resources, the set of reference signal resources includes N reference signal resources, N is a positive integer, and the reference signal configuration information is further used to indicate at least one of the following:

[0303] The time domain spacing d between reference signal resources;

[0304] The OFDM symbol position of the first reference signal resource among the N reference signal resources, and for each of the other reference signal resources except the first reference signal resource among the N reference signal resources, the offset between the time domain spacing between this reference signal resource and the reference signal resource before it and the time domain spacing d.

[0305] For the specific description of the reference signal configuration information, reference may be made to the corresponding description in the embodiments shown above. Figure 2 It will not be elaborated here.

[0306] S203. Receive the predicted channel state.

[0307] Wherein, the predicted channel state is predicted based on the reference signal.

[0308] In some embodiments, the predicted channel state includes at least one of the following:

[0309] Channel quality indication, precoding matrix, reference signal received power, indication of reference signal resources.

[0310] For the description of the predicted channel state, reference may be made to the corresponding description in the embodiments shown above. Figure 2 It will not be elaborated here.

[0311] In some embodiments, the second node may further send third indication information to the first node, and the third indication information is used to indicate the channel state of predicting the first time domain position.

[0312] As an example, receiving the predicted channel state includes: receiving the channel state of the predicted first time domain position sent by the first node, and / or, receiving the channel state and the second time domain position of the predicted second time domain position sent by the first node, where the first time domain position is different from the second time domain position.

[0313] As another example, receiving a predicted channel state includes: receiving the channel state of a predicted first time-domain position sent by a first node, and / or receiving fourth indication information sent by the first node, where the fourth indication information is used to indicate at least one of the following:

[0314] The time-domain position of a reference signal resource corresponding to the best prediction performance;

[0315] The best prediction performance.

[0316] For the specific description of the second time-domain position and the fourth indication information, reference may be made to the corresponding description in the embodiments shown above Figure 2 and will not be elaborated here.

[0317] In some embodiments, the second node may also receive second indication information sent by the first node, where the second indication information is used to indicate at least one of the following:

[0318] The time-domain position of the predicted channel state;

[0319] The frequency-domain position of the predicted channel state;

[0320] The number of predicted channel states;

[0321] The method used to predict the channel state.

[0322] For the description of the second indication information, reference may be made to the corresponding description in the embodiments shown above Figure 2 and will not be elaborated here.

[0323] In some embodiments, after receiving the predicted channel state, the second node may 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 performance of the communication system in transmitting data.

[0324] The above mainly introduces the solution provided by the present disclosure from the perspective of the interaction between each node. It can be understood that each node, such as the first node or the second node, includes corresponding hardware structures and / or software modules for executing each function. Those skilled in the art should easily realize that, in combination with the algorithm steps of each example described in the embodiments disclosed in this article, the present disclosure can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed in the form of hardware or computer software driving the 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 function for each specific application, but such implementation should not be considered to exceed the scope of the present disclosure.

[0325] Embodiments of the present disclosure may divide functional modules for the first node or the second node according to the above method embodiments. For example, each functional module may be divided corresponding to each function, or two or more functions may be integrated into one functional module. The above integrated module may be implemented in the form of hardware or in the form of software. It should be noted that the division of modules in the embodiments of the present disclosure is illustrative, only a logical function division, and there may be other division methods in actual implementation. The following takes the example of dividing each functional module corresponding to each function for illustration.

[0326] Figure 5 It is a schematic diagram of the composition of a communication device provided by an embodiment of the present disclosure. As Figure 5 shown, the communication device 30 includes a sending unit 301, a receiving unit 302, and a processing unit 303.

[0327] The communication device 30 may be the above-mentioned first node or a chip in 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 specifically used to implement the following functions.

[0328] The sending unit 301 is used to send first indication information, and the first indication information is used to indicate the parameter requirements of the predicted channel state for the reference signal;

[0329] The receiving unit 302 is used to receive reference signal configuration information and receive the reference signal according to the reference signal configuration information;

[0330] The processing unit 303 is used to predict the channel state according to the reference signal to obtain the predicted channel state;

[0331] The sending unit 301 is further used to send the predicted channel state to the second node.

[0332] In some embodiments, the sending unit 301 is further used to send second indication information, and the second indication information is used to indicate at least one of the following: the time domain position of the predicted channel state; the frequency domain position of the predicted channel state; the number of predicted channel states; the method used for predicting the channel state.

[0333] In some embodiments, the receiving unit 302 is further used to receive third indication information, and the third indication information is used to indicate the channel state of the predicted first time domain position;

[0334] The sending unit 301 is specifically used to send the channel state of the predicted first time domain position to the second node, and / or send the channel state of the predicted second time domain position and the second time domain position to the second node, where the first time domain position is different from the second time domain position.

[0335] In some embodiments, the receiving unit 302 is further configured to receive third indication information, where the third indication information is used to indicate the channel state of the predicted first time domain position;

[0336] The sending unit 301 is specifically configured to send the channel state of the predicted first time domain position to the second node, and / or send fourth indication information to the second node, where the fourth indication information is 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.

[0337] Figure 6 It is a schematic diagram of the composition of another communication device provided by an embodiment of the present disclosure. As Figure 6 shown, the communication device 40 includes a receiving unit 401 and a sending unit 402.

[0338] The communication device 40 may be the above-mentioned second node or a chip in 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 specifically used to implement the following functions.

[0339] The receiving unit 401 is configured to receive first indication information, where the first indication information is used to indicate the parameter requirements of the predicted channel state for the reference signal;

[0340] The sending unit 402 is configured to send reference signal configuration information and send a reference signal based on the reference signal configuration information;

[0341] The receiving unit 401 is further configured to receive the predicted channel state, where the predicted channel state is predicted based on the reference signal.

[0342] In some embodiments, the receiving unit 401 is further configured to receive second indication information, where the second indication information is used to indicate at least one of the following:

[0343] the time domain position of the predicted channel state;

[0344] the frequency domain position of the predicted channel state;

[0345] the number of predicted channel states;

[0346] the method used to predict the channel state.

[0347] In some embodiments, the sending unit 402 is further configured to send the received third indication information, where the third indication information is used to indicate the channel state of the predicted first time domain position;

[0348] The receiving unit 401 is specifically configured to: receive the channel state of the predicted first time domain position sent by the first node, and / or receive the channel state of the predicted second time domain position and the second time domain position sent by the first node, where the first time domain position is different from the second time domain position.

[0349] In some embodiments, the sending unit 402 is further configured to send a received third indication message, where the third indication message is used to indicate the channel state predicted at the first time domain position.

[0350] The receiving unit 401 is specifically configured to: receive the channel state predicted at the first time domain position sent by the first node, and / or receive a fourth indication message sent by the first node, where the fourth indication message is used to indicate at least one of the following:

[0351] The time domain position of the reference signal resource corresponding to the best prediction performance;

[0352] The best prediction performance.

[0353] It should be noted that Figure 5 and Figure 6 The units in Figure 5 and Figure 6 may also be referred to as modules. For example, the sending unit may be referred to as a sending module. Additionally, in the embodiments shown in

[0354] Figure 5 and Figure 6 , the names of the respective units may not be the names shown in the figures. For example, the sending unit may also be referred to as a communication unit, and the receiving unit may also be referred to as a communication unit.

[0355] When the above communication device 30 or communication device 40 is implemented in the form of hardware to realize the functions of the above integrated modules, the embodiments of the present disclosure provide a structural schematic diagram of a communication device. As Figure 7 shown, the communication device 50 includes: a processor 502, a communication interface 503, and a bus 504. Optionally, the communication device 50 may further include a memory 501.

[0356] The processor 502 can be a device that implements or executes various exemplary logical blocks, modules, and circuits described in connection with the present disclosure. The processor 502 can be a central processing unit, a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field-programmable gate array, or other programmable logic device, transistor logic device, hardware component, or any combination thereof. It can implement or execute various exemplary logical blocks, modules, and circuits described in connection with the present disclosure. The processor 502 can also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a DSP and a microprocessor, etc.

[0357] The communication interface 503 is used to connect to other devices through a communication network. The communication network can be an Ethernet, a radio access network, a wireless local area network (WLAN), etc.

[0358] The memory 501 can be a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (RAM) or other type of dynamic storage device that can store information and instructions, or it can also be an electrically erasable programmable read-only memory (EEPROM), a magnetic disk storage medium, or other magnetic storage device, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited thereto.

[0359] As a possible implementation, the memory 501 can exist independently of the processor 502. The memory 501 can be connected to the processor 502 through 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, the communication method provided by the embodiments of the present disclosure can be implemented.

[0360] In another possible implementation, the memory 501 can also be integrated with the processor 502.

[0361] The bus 504 can be an extended industry standard architecture (EISA) bus, etc. The bus 504 can be divided into an address bus, a data bus, a control bus, etc. For the sake of representation, Figure 7 only a thick line is used to represent it in the figure, but it does not mean that there is only one bus or one type of bus.

[0362] Through the description of the above embodiments, those skilled in the art can clearly understand that for the convenience and brevity of description, only the division of the above functional modules is used as an example. In actual applications, the above functions can be allocated 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.

[0363] The embodiments of the present disclosure also provide a computer-readable storage medium. All or part of the processes in the above method embodiments can be completed by computer instructions instructing relevant hardware. The program can be stored in the above computer-readable storage medium. When the program is executed, it can include the processes of the above method embodiments. The above computer-readable storage medium can also be an external storage device of the above first node or second node, such as a plug-in hard disk, a smart media card (SMC), a secure digital (SD) card, a flash card, etc. equipped on the above first node or second node. Further, the above computer-readable storage medium can also include both the internal storage unit of the above first node or second node and the external storage device. The above computer-readable storage medium is used to store the above computer program and other programs and data required by the above first node or second node. The above computer-readable storage medium can also be used to temporarily store the data that has been output or will be output.

[0364] The embodiments of the present disclosure also provide a computer program product. The computer product includes a computer program. When the computer program product runs on a computer, the computer is caused to execute any one of the communication methods provided in the above embodiments.

[0365] Although the present disclosure has been described in conjunction with various embodiments herein, however, in the process of implementing the claimed present disclosure, those skilled in the art can understand and realize other variations of the disclosed embodiments by viewing the drawings, the disclosure content, and the appended claims. In the claims, the word "comprising" does not exclude other components or steps, and "a" or "one" does not exclude a plurality of cases. A single processor or other unit can implement several functions listed in the claims. Certain measures are recited in mutually different dependent claims, but this does not mean that these measures cannot be combined to produce good results.

[0366] Although the present disclosure has been described in connection with specific features and their embodiments, it will be apparent that various modifications and combinations can be made without departing from the spirit and scope of the present disclosure. Accordingly, the present specification and the drawings are merely exemplary illustrations of the present disclosure defined by the appended claims, and are considered to cover any and all modifications, variations, combinations or equivalents within the scope of the present disclosure. Obviously, those skilled in the art can make various changes and modifications to the present disclosure without departing from the spirit and scope of the present disclosure. Thus, if these modifications and variations of the present disclosure fall within the scope of the claims of the present disclosure and their equivalent technologies, the present disclosure is also intended to include these changes and modifications.

[0367] The above is only a specific implementation manner of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any changes or substitutions within the technical scope disclosed by the present disclosure should be covered by the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be subject to the protection scope of the claims.

Claims

1. A communication method, characterized in that: Applied to the first node, the method comprises: Sending first indication information, where the first indication information is used to indicate parameter requirements of a predicted channel state for a reference signal; receiving reference signal configuration information, and receiving a reference signal according to the reference signal configuration information; Predicting a channel state according to the reference signal to obtain a predicted channel state; The predicted channel state is sent to the second node.

2. The method according to claim 1, characterized in that The parameter requirements include at least one of the following: The time spacing of the reference signals; The frequency domain spacing of the reference signal; The number of ports of the reference signal; The number of ports of reference signal resources used to carry the reference signal; The number of ports for measuring reference signal resources; The number of times the reference signal is transmitted; the number of the reference signal resources; the number of reference signal resource groups; the number of reference signal resources in the reference signal resource group; the spacing between reference signal resource groups; power offset information of the reference signal; angular spacing between the reference signals; The angular range between the reference signals; A mapping relationship between the time domain order of the reference signal and the transmission direction of the reference signal; A mapping relationship between the frequency domain order of the reference signal and the transmission direction of the reference signal; A mapping relationship between an index number of a reference signal resource and a transmission direction of the reference signal; a mapping relationship between the order of reference signal resources in the reference signal configuration information and the transmission direction of the reference signal; the desired time domain spacing between reference signal resources; a maximum allowable difference between an actual time domain spacing between reference signal resources and an expected time domain spacing between the reference signal resources; a channel quality degradation value corresponding to a difference between an actual time domain spacing between reference signal resources and an expected time domain spacing between the reference signal resources; a maximum allowable difference between an actual time domain spacing between reference signal resources corresponding to a channel quality degradation value and an expected time domain spacing between the reference signal resources; a maximum allowable difference between an actual time domain position between reference signal resources and an expected time domain position between the reference signal resources; a channel quality degradation value corresponding to a difference between an actual time domain position between reference signal resources and an expected time domain position between the reference signal resources; The maximum allowable difference between the actual time domain position between the reference signal resources corresponding to the channel quality degradation value and the expected time domain position between the reference signal resources.

3. The method according to claim 1, characterized in that The reference signal configuration information includes or is used to indicate one of the following indications: The time domain position of the reference signal; The frequency domain position of the reference signal; a transmission direction of the reference signal; The range of the transmission direction of the reference signal; The angular range between the reference signals; angular spacing between the reference signals; The index number of the reference signal; an identification number of the reference signal; the number of reference signal resources used to carry the reference signal; The number of ports of the reference signal; The number of times the reference signal is transmitted; the number of reference signal resource groups; power offset information of the reference signal; a mapping relationship between the time domain position of the reference signal and the 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 the index number of the reference signal and the transmission direction of the reference signal.

4. The method according to claim 3, characterized in that The reference signal configuration information also includes or is used to indicate the time domain spacing between reference signal resources, wherein the time domain spacing between the reference signal resources is an integer multiple of N orthogonal frequency division multiplexing OFDM symbols, where N is the number of OFDM symbols included in a time slot.

5. The method according to claim 1, characterized in that: The predicted channel state includes at least one of the following: Indication of channel quality, precoding matrix, reference signal received power, and reference signal resources.

6. The method according to claim 1, characterized in that The method further comprises: Sending second indication information, where the second indication information is used to indicate at least one of the following: The time domain position of the predicted channel state; The frequency domain position of the predicted channel state; the number of the predicted channel states; The method used to predict the channel state.

7. The method according to claim 3, characterized in that The time domain position of the reference signal includes an OFDM symbol position of a reference signal resource used to carry the reference signal, and the OFDM symbol positions of reference signal resources in the same reference signal resource set are the same.

8. The method according to claim 3, characterized in that The time domain position of the reference signal includes an OFDM symbol position of a reference signal resource used to carry the reference signal, and the OFDM symbol positions of all reference signal resources are the same.

9. The method according to claim 3, characterized in that: The time domain position of the reference signal includes the OFDM symbol position of a 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 position of the reference signal resource set, where N is a positive integer.

10. The method according to claim 3, characterized in that: The time domain position of the reference signal includes an OFDM symbol position of a reference signal resource set to which a reference signal resource used to carry the reference signal belongs, the reference signal resource set includes N reference signal resources, N is a positive integer, and the reference signal configuration information also includes or is used to indicate at least one of the following: The time domain spacing between the reference signal resources; A time domain offset between each of the reference signal resources and an OFDM symbol position of the reference signal resource set.

11. The method according to claim 1, characterized in that: The reference signal configuration information is used to indicate a reference signal resource set, the reference signal resource set includes N reference signal resources, N is a positive integer, and the reference signal configuration information is further used to indicate at least one of the following: The time domain spacing between the reference signal resources; an OFDM symbol position of a first reference signal resource, a time domain offset between an OFDM symbol position of the first reference signal resource and other reference signal resources among the N reference signal resources except the first reference signal resource, the first reference signal resource being one of the N reference signal resources.

12. The method according to claim 1, characterized in that The reference signal configuration information is used to indicate a reference signal resource set, the reference signal resource set includes N reference signal resources, N is a positive integer, and the reference signal configuration information is further used to indicate at least one of the following: The time domain spacing d between the reference signal resources; The OFDM symbol position of the first reference signal resource among the N reference signal resources, and the offset between the time domain spacing d between each of the reference signal resources and the reference signal resource before the reference signal resource among the N reference signal resources except the first reference signal resource.

13. The method according to claim 1, characterized in that The method further comprises: Receiving third indication information, where the third indication information is used to indicate a predicted channel state at a first time domain position; and sending the predicted channel state to the second node includes: Sending the predicted channel state of the first time domain position to the second node, and / or sending the predicted channel state of the second time domain position and the second time domain position to the second node, the first time domain position being different from the second time domain position.

14. The method according to claim 1, characterized in that The method further comprises: Receiving third indication information, where the third indication information is used to indicate a predicted channel state at a first time domain position; and sending the predicted channel state to the second node includes: Sending the predicted channel state of the first time domain position to the second node, and / or sending fourth indication information to the second node, where the fourth indication information is used to indicate at least one of the following: The time domain location of the reference signal resource corresponding to the best prediction performance; Best prediction performance.

15. A communication method, characterized in that: Applied to the second node, the method comprises: receiving first indication information, where the first indication information is used to indicate parameter requirements of a predicted channel state for a reference signal; Sending reference signal configuration information, and sending a reference signal based on the reference signal configuration information; A predicted channel state is received, where the predicted channel state is predicted based on the reference signal.

16. A communication device, characterized in that: include: Memory and processor; Memory and processor coupling; The memory is used to store instructions executable by the processor; When the processor executes the instructions, the method according to any one of claims 1 to 15 is performed.

17. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer instructions, and when the computer instructions are executed on a computer, the computer is caused to perform the method according to any one of claims 1 to 15.

18. A computer program product, characterized in that The computer program product comprises computer instructions, which, when executed on a computer, cause the computer to perform the method according to any one of claims 1 to 15 .

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