Communication method, communication apparatus, storage medium, and program product

Abstract

Embodiments of the present application relate to the technical field of communications, and provide a communication method, a communication apparatus, a storage medium, and a program product, which can solve the technical problem in the related art of poor communication quality in beamforming scenarios. The method is applied to a first node. The method comprises: transmitting a signal on the basis of a target beam, wherein the target beam is determined on the basis of historical channel state information and obstacle information, and the obstacle information is information of an obstacle on the transmission path of the signal.

Description

Communication method, communication device, storage medium and program product

[0001] The present disclosure claims priority to Chinese Patent Application No. 202411332878.5, filed on September 23, 2024, the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present disclosure relates to the field of communication technology, and in particular to a communication method, a communication device, a storage medium and a program product. BACKGROUND

[0003] With the development of mobile communication networks, in the communication process, the energy of the signal can be concentrated in a specific direction through beamforming to improve the transmission efficiency of the signal.

[0004] However, in the existing beamforming scenario, the path of signal transmission is affected by obstacles in the environment, and there is a problem of poor communication quality. There is currently a lack of a reliable communication method to solve the problem of poor communication quality in the existing beamforming scenario. SUMMARY

[0005] The embodiments of the present disclosure provide a communication method, a communication device, a storage medium and a program product, which can solve the technical problem of poor communication quality in the beamforming scenario in the related art.

[0006] In one aspect, a communication method is provided, applied to a first node, comprising:

[0007] transmitting a signal based on a target beam; the target beam is determined based on historical channel state information (CSI) and obstacle information; the obstacle information is information of an obstacle on a transmission path of the signal.

[0008] In another aspect, a communication device is provided, comprising a signal transmission module;

[0009] The signal transmission module is configured to transmit a signal based on a target beam; the target beam is determined based on historical channel state information (CSI) and obstacle information; the obstacle information is information of an obstacle on a transmission path of the signal.

[0010] In yet another aspect, a communication device is provided, comprising a memory and a processor; the memory and the processor are coupled; the memory is configured to store a computer program; and the processor is configured to execute the computer program to implement the method of the above aspect.

[0011] In a further aspect, a computer-readable storage medium is provided, and the computer-readable storage medium stores computer program instructions. The computer program instructions are executed by a processor to implement the method in the above aspect.

[0012] In a further aspect, a computer program product is provided, and the computer program product includes computer program instructions. The computer program instructions are executed by a processor to implement the method in the above aspect.

[0013] The embodiment of the present disclosure provides a communication method, applied to a first node, comprising:

[0014] transmitting a signal based on a target beam; the target beam is determined based on historical channel state information and obstacle information; the obstacle information is information of an obstacle on a transmission path of the signal. Since the historical channel state information can indicate the channel state of the first node when actually transmitting a signal in a past time period, it can be used as a reference for the channel state corresponding to the subsequent transmission signal. The existence or movement of the obstacle on the transmission path may cause the channel state (such as signal multipath reflection, fading, delay spread) to change. Therefore, the target beam meeting the communication requirement can be determined based on the historical channel state information and the obstacle information, and the signal is transmitted based on the target beam, which can ensure the quality of the communication. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the present disclosure, the following will briefly introduce the drawings needed to be used in some embodiments of the present disclosure. Obviously, the drawings described in the following are only the drawings of some embodiments of the present disclosure, and other drawings can also be obtained by those skilled in the art according to these drawings.

[0016] FIG. 1 is a system architecture diagram of a communication system provided by some embodiments of the present disclosure.

[0017] FIG. 2 is a structural schematic diagram of a first node provided by some embodiments of the present disclosure.

[0018] FIG. 3 is a flow schematic diagram of a communication method provided by some embodiments of the present disclosure.

[0019] FIG. 4 is a structural schematic diagram of a communication device provided by some embodiments of the present disclosure.

[0020] FIG. 5 is a structural schematic diagram of another communication device provided by some embodiments of the present disclosure. DETAILED DESCRIPTION

[0021] The technical solutions in the present disclosure will be described clearly and completely below in conjunction with the drawings in the present disclosure. Obviously, the described embodiments are only 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 labor fall within the protection scope of the present disclosure. The technical solutions in the present disclosure will be described clearly and completely below in conjunction with the drawings in the present disclosure. Obviously, the described embodiments are only 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 labor fall within the protection scope of the present disclosure.

[0022] It should be noted that in the present disclosure, the words such as "exemplary" or "for example" are used to mean serving as an example, instance, or illustration. Any embodiment or design presented as "exemplary" or "for example" in the present disclosure should not be interpreted as being more preferred or advantageous than other embodiments or design solutions. In fact, the use of the words such as "exemplary" or "for example" is intended to present related concepts in a specific manner.

[0023] Hereinafter, the terms "first", "second" are only used for description purposes and should not be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more features.

[0024] In the description of the present disclosure, unless otherwise specified, " / " means "or", for example, A / B can mean A or B. "And / or" in this document is only a description of the relationship between the associated objects, which means that there can be three relationships, for example, A and / or B can mean that A exists alone, A and B exist together, and B exists alone. In addition, "at least one" means one or more, and "multiple" means two or more.

[0025] With the rapid development of wireless communication technology, especially in 5G and future 6G communication systems, how to ensure stable signal transmission and efficient spectrum utilization in complex environments has become a key technical challenge. Wireless communication systems can concentrate signal energy in a specific direction through beamforming technology to achieve higher transmission efficiency. However, in actual application, the signal propagation path is often affected by obstacles in the environment, such as buildings, vehicles, large equipment, etc., resulting in phenomena such as blocking, reflection, fading, and multipath effects during signal propagation. These effects cause rapid and complex changes in channel conditions, seriously affecting the quality and reliability of signal transmission.

[0026] Current wireless communication protocols mainly rely on periodic feedback of channel state information to adjust transmission strategies. However, in the face of obstacles with dynamic changes, this fixed period-based feedback mechanism is difficult to respond to the dramatic fluctuations of the channel. The presence of obstacles will cause nonlinear changes in the channel, including signal attenuation, multipath reflection enhancement, delay spread increase, and other problems. If the system cannot quickly obtain the relevant information of the obstacles and make corresponding adjustments, the signal quality will be greatly reduced, and in severe cases, it will cause communication interruption.

[0027] The existing CSI feedback mechanism and beamforming technology have very limited use of obstacle information. Most systems can only make limited estimates of future channel states based on historical channel feedback data, and cannot actively perceive and use obstacle information, especially in a dynamic obstacle environment. For example, when obstacles gradually block the main signal propagation path, existing systems have difficulty quickly adjusting the beam direction or switching to a more suitable beam type for the current environment. Due to the lack of flexible application of real-time obstacle information, the communication system cannot respond immediately according to the rapid changes in the channel, affecting the continuity and efficiency of signal transmission.

[0028] To solve the above technical problems, the embodiments of the present disclosure provide a communication method applied to a first node. Since the historical channel state information can indicate the channel state of the first node when actually transmitting a signal in a past time period, it can be used as a reference for the channel state corresponding to a subsequent transmission signal. However, the presence or movement of obstacles on the transmission path may cause changes in the channel state (such as signal multipath reflection, fading, delay spread). Therefore, a target beam that meets the communication requirements can be determined based on the historical channel state information and the obstacle information, and signal transmission based on the target beam can ensure the quality of communication.

[0029] The communication method provided by the embodiments of the present disclosure can be applied to a communication system as shown in FIG. 1. As shown in FIG. 1, the communication system includes a first node 101 and a second node 102.

[0030] The first node 101 is configured to transmit a signal to the second node 102 based on a target beam, or receive a signal transmitted by the second node 102 based on the target beam. The target beam is determined based on historical channel state information and obstacle information. The obstacle information is information of an obstacle on a transmission path of the signal.

[0031] The second node 102 is configured to transmit a signal to the first node 101 based on a target beam, or receive a signal transmitted by the first node 101 based on the target beam.

[0032] Exemplarily, the first node 101 or the second node 102 can be a mobile phone, a tablet computer, a desktop computer, a laptop computer, a handheld computer, a notebook computer, an ultra-mobile personal computer (UMPC), a netbook, and a cellular phone, a personal digital assistant (PDA), an augmented reality (AR) \ virtual reality (VR) device, and the like. The embodiments of the present application do not specially limit the form of the electronic device. It can interact with the user through one or more ways such as a keyboard, a touchpad, a touch screen, a remote controller, voice interaction, or a handwriting device; or can be a base station, an evolved node base station (eNB), a next generation node base station (gNB), a new radio base station (eNB), a macro base station, a micro base station, a high-frequency base station, or a transmission and reception point (TRP), a non-3rd generation partnership project (3GPP) access network (such as WiFi), and / or a non-3GPP interworking function (N3IWF) device. In FIG. 1, the first node 101 and the second node 102 are taken as examples of base stations.

[0033] It should be noted that FIG. 1 is only an exemplary framework diagram, and the number of devices included in FIG. 1 and the names of various devices are not limited.

[0034] Exemplarily, as shown in FIG. 2, the present application provides a structural diagram of a first node, which includes a channel state measurement module 201, an obstacle detection module 202, a channel prediction module 203, and a codebook switching module 204.

[0035] The channel state measurement module 201 is configured to measure channel state information (CSI) based on a reference signal (RS).

[0036] The obstacle detection module 202 is configured to detect static and dynamic obstacles in the channel.

[0037] The channel prediction module 203 is configured to predict the channel state at the current time based on the historical obstacle information and the channel state, and generate dynamic CSI feedback information.

[0038] The codebook switching module 204 is configured to determine whether to switch the codebook corresponding to the precoding matrix, and instruct the UE to perform switching through signaling.

[0039] The application scenarios of the embodiments of the present disclosure are not limited. The system architecture and business scenarios described in the embodiments of the present disclosure are used to more clearly illustrate the technical solutions of the embodiments of the present disclosure, and do not constitute a limitation on the technical solutions provided by the embodiments of the present disclosure. It is known to those skilled in the art that, with the evolution of network architecture and the appearance of new business scenarios, the technical solutions provided by the embodiments of the present disclosure are also applicable to similar technical problems.

[0040] The communication method provided by the embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings.

[0041] The communication method provided by the embodiments of the present disclosure can be applied to the first node 101 in the communication system shown in FIG. 1. FIG. 3 shows a flowchart of a communication method, as shown in FIG. 3, the communication method comprises the following S301:

[0042] In S301, the signal is transmitted based on the target beam.

[0043] The target beam is determined based on the historical channel state information and the obstacle information; and the obstacle information is information of an obstacle on a transmission path of the signal.

[0044] It should be understood that the historical channel state information includes channel state information fed back by a node receiving a signal transmitted by the first node before the signal is transmitted based on the target beam.

[0045] It should be understood that the historical channel state information can indicate the channel state of the first node when actually transmitting a signal in a past time period, and can be used as a reference for the channel state corresponding to a subsequent transmission signal. The existence or movement of an obstacle on the transmission path can cause changes in the channel state (such as signal multipath reflection, fading, delay spread). Therefore, the target beam that meets the communication requirements can be determined based on the historical channel state information and the obstacle information, and the signal is transmitted based on the target beam, which can ensure the quality of communication.

[0046] In some embodiments, the determination process of the target beam comprises: determining the predicted channel state information of the channel corresponding to the transmission signal based on the historical channel state information and the obstacle information; and determining the target beam based on the predicted channel state information.

[0047] It should be noted that the target beam can be determined by the first node itself, or determined by another node outside the first node and sent to the first node.

[0048] For example, the first node can be a terminal, and before the terminal transmits a signal based on the target beam, the base station can determine the target beam and send information indicating the target beam to the terminal; the terminal receives the information indicating the target beam and transmits a signal based on the target beam.

[0049] In some embodiments, the historical channel state information is obtained by determining the historical channel state information based on the channel feedback.

[0050] For example, the first node can be a base station: the base station sends a reference signal to a terminal; the terminal receives the reference signal and determines channel state information; the terminal sends the channel state information to the base station; and the base station can receive the channel feedback information (such as channel state information) sent by the terminal.

[0051] In some embodiments, the frequency of channel feedback is determined based on the change speed of all or part of the historical channel state information.

[0052] It should be understood that the change speed of the historical channel state information can be the ratio of the amount of information corresponding to the historical channel information at different times to the time period, which can reflect the degree of change of the historical channel state information; the greater the change speed of the historical channel state information, the more dramatic the change of the historical channel state information in the time period corresponding to multiple times.

[0053] It should be understood that in the case where the degree of change of the historical channel state information is large, if channel feedback is performed based on a large frequency, the amount of channel state information obtained within a certain time period can be insufficient, and the change trend of the channel state can not be accurately obtained based on the channel state information; therefore, the target beam that can meet the communication requirements can not be accurately and reliably determined. Therefore, the frequency of channel feedback can be determined based on the change speed of the historical channel state information, to ensure that sufficient channel state information is obtained within a certain time period, and to ensure that the corresponding communication quality is met when transmitting a signal based on the target beam.

[0054] For example, it is assumed that the historical channel state information includes signal strength attenuation, which is used to indicate the attenuation of the signal from the sending end to the receiving end when the signal is transmitted. It is assumed that the signal strength attenuation at time 1 is 2 decibels, the signal strength attenuation at time 2 is 3 decibels, and the signal strength attenuation at time 3 is 7 decibels. It can be seen that the change speed of the signal strength attenuation corresponding to time 1 and time 2 is less than the change speed of the signal strength attenuation corresponding to time 2 and time 3, which indicates that the channel state corresponding to time 3 changes suddenly. At this time, the frequency of channel feedback after time 3 needs to be increased, and the number of channel state information after time 3 needs to be increased. Thus, based on a larger number of channel state information, the determination of the target beam can be more accurate and reliable. Further, the stability and efficiency of the communication link can be ensured.

[0055] In some embodiments, the historical channel state information includes at least one of the following: angle information of a historical channel corresponding to a signal, distance information of the historical channel, path fading information of the historical channel, delay spread information of the historical channel, reflection path information of the historical channel, rank of the historical channel, channel quality of the historical channel, signal strength of a signal corresponding to the historical channel, power of the signal corresponding to the historical channel, and a visible area corresponding to the historical channel.

[0056] It should be understood that the visible area corresponding to the historical channel is used to indicate a geographical range in which the signal corresponding to the historical channel can be received.

[0057] In some embodiments, the angle information of the historical channel corresponding to the signal includes at least one of the following: angle of arrival (AoA) and angle of departure (AoD).

[0058] In some embodiments, the distance information of the historical channel is used to indicate the length of the reflection path, which can be determined based on the multi-path reflection.

[0059] In some embodiments, the path fading information of the historical channel is used to indicate the attenuation information of the signal strength on the transmission path.

[0060] In some embodiments, the delay spread information of the historical channel is used to indicate the delay caused by the reflection path, which can be determined based on the motion trajectory of the obstacle,

[0061] In some embodiments, the obstacle information includes at least one of the following: position information of the obstacle, speed information of the obstacle, acceleration information of the obstacle, motion trajectory of the obstacle, contour information of the obstacle, material information of the obstacle, shielding ratio information of the obstacle to the channel corresponding to the signal, and orientation information of the obstacle.

[0062] In some embodiments, the frequency of channel feedback can be completed by adjusting the transmission parameters corresponding to the channel feedback.

[0063] In some embodiments, the transmission parameter comprises at least one of: a frequency of sending a reference signal, a parameter of beamforming, a precoding matrix.

[0064] In some embodiments, the obstacle information is obtained by: determining the obstacle information by communication sensing.

[0065] It should be understood that the first node can obtain the obstacle information of the obstacle by communication sensing on the obstacle on the transmission path of the transmission signal.

[0066] In some embodiments, the first node can perform communication sensing in a self-to-self or other-to-self mode.

[0067] For example, the first node can transmit a sensing signal to the obstacle and receive the sensing signal reflected by the obstacle to obtain the obstacle information.

[0068] For example, another node other than the first node can transmit a sensing signal to the obstacle and receive the sensing signal reflected by the obstacle to obtain the obstacle information.

[0069] For example, the first node can send a sensing request to another node expected to transmit a sensing signal to the obstacle, requesting the other node to transmit a sensing signal to the obstacle.

[0070] In some embodiments, the communication sensing can be completed based on a separate communication sensing module.

[0071] In some embodiments, the first node can receive obstacle information sent by another device; the obstacle information is obtained by the other device by communication sensing on the obstacle.

[0072] In some embodiments, the communication sensing on the obstacle can comprise at least one of: radar, laser sensor.

[0073] In some embodiments, the frequency of communication sensing can be determined based on the change speed of the obstacle information.

[0074] It should be understood that the faster the change speed of the obstacle information, the more obstacle information at different time points is needed to improve the prediction accuracy of the channel state information corresponding to the transmitted signal. At this time, the frequency of communication sensing can be increased to obtain more obstacle information at different time points.

[0075] In some embodiments, the target beam can be determined based on the obstacle information obtained by the target frequency; the corresponding communication quality when transmitting a signal based on the target beam can be determined (which can be determined based on the signal strength received by the receiving end, the error rate of the received data, the packet loss rate of the received data, etc.); and the association between the communication quality and the target frequency is determined; based on the association, the frequency corresponding to the expected communication quality of the communication awareness is determined.

[0076] In some embodiments, the obstacle information includes the speed of the obstacle; the obstacle can include at least one of the following: static obstacle, dynamic obstacle. Wherein the speed of the static obstacle is zero, and the speed of the dynamic obstacle is not zero.

[0077] It should be noted that the speed of the static obstacle is zero, which means that the speed of the obstacle is zero within a certain time period. The obstacle information of the static obstacle can also change, for example, a static building can be removed, or a new building can be added.

[0078] For example, the static obstacle can include at least one of the following: building, natural terrain, home, fixed design (such as road sign, telegraph pole, billboard), static product caused by weather factors (such as snow, water).

[0079] For example, the dynamic obstacle can include at least one of the following: pedestrian, vehicle, animal, dynamic product of weather factors (such as rain, snow).

[0080] It should be understood that in the case of the existence of static obstacles and dynamic obstacles at the same time in the process of transmitting signals, the influence of static obstacles on channel state and the influence of dynamic obstacles on channel state exist superposition effect, and the first node can determine the target beam based on the superposition effect of static obstacles and dynamic obstacles on channel state, to ensure the reliability and stability of communication.

[0081] In some embodiments, the type of dynamic obstacle includes multiple types; the type of dynamic obstacle is determined by the speed interval in which the change speed of the obstacle information is located.

[0082] For example, it is assumed that the dynamic obstacle includes a first type and a second type. The first type corresponds to a first speed interval, and the second type corresponds to a second speed interval; the speed in the first speed interval is greater than the speed in the second speed interval.

[0083] In some embodiments, the obstacle information of the dynamic obstacle of the first type can be obtained based on the communication awareness of a shorter period or a higher frequency. The obstacle information of the dynamic obstacle of the second type can be obtained based on the communication awareness of a longer period or a lower frequency.

[0084] It should be understood that, since the movement of the first type of dynamic obstacle is relatively fast, the obstacle information of the first type of dynamic obstacle changes relatively sharply, and if a relatively long period of communication sensing is used, there can be a large gap between the obstacle information of the first type of obstacle that can be obtained and the real-time obstacle information corresponding to the transmission signal; therefore, a relatively short period of communication sensing can be used for communication sensing of the first type of dynamic obstacle, which can improve the real-time performance of the obstacle information, and thus improve the reliability of the target beam transmission signal.

[0085] It should be understood that, since the movement of the second type of dynamic obstacle is relatively slow, the impact of the second type of dynamic obstacle on the channel can be ignored in a relatively short period of time; in a relatively long period of time, the impact of the second type of dynamic obstacle on the channel can only reach a high level. Therefore, the gradual impact of the second type of dynamic obstacle on the channel can be obtained by using a relatively long period of communication sensing to obtain the obstacle information of the second type of dynamic obstacle. In this way, unnecessary signaling overhead of the communication system can be reduced, and the rationality of the utilization of communication resources can be ensured.

[0086] In some embodiments, the first type of dynamic obstacle can be referred to as a fast-changing obstacle, or an environment composed of the first type of dynamic obstacle can be referred to as a fast-changing environment; the second type of dynamic obstacle can be referred to as a slow-changing obstacle, or an environment composed of the second type of dynamic obstacle can be referred to as a slow-changing environment.

[0087] In some embodiments, the static obstacle and the background noise can be collectively referred to as a bottom noise environment.

[0088] In some embodiments, the first node can obtain information of the bottom noise environment based on a longer period than the second type of dynamic obstacle.

[0089] For example, the first node collects information of the bottom noise environment when the system is initialized. Then, the information of the bottom noise environment is updated based on a longer period than the second type of dynamic obstacle, so as to check the bottom noise environment and maintain the optimal configuration of resources. System initialization is used to indicate the process of configuring and setting the communication system before the corresponding communication system of the first node starts running.

[0090] In some embodiments, the first node can determine a background channel based on the bottom noise environment.

[0091] It should be understood that, for the information corresponding to the bottom noise environment, the slow-changing environment, and the fast-changing environment respectively, using different lengths of periods or different sizes of frequencies for more flexible information collection can maximize the utilization of resources of the communication system and achieve efficient and stable signal transmission.

[0092] In some embodiments, the feedback priority of the information of the background noise environment, the information of the slowly-varying environment, and the information of each of the fast-varying environments is used to indicate the resource allocation priority (e.g., feedback frequency, time-frequency resources available at the time of feedback) when feedback is performed.

[0093] For example, the feedback priority of the information of the background noise environment < the feedback priority of the information of the slowly-varying environment < the feedback priority of the information of each of the fast-varying environments.

[0094] In some embodiments, the perception signal corresponding to the communication perception includes at least one of the following: a perception signal transmitted by the first node, a reference signal, a signal corresponding to historical channel state information, and a signal corresponding to a target beam.

[0095] It should be understood that the reference signal is transmitted by the first node in the process of channel feedback, and after the first node transmits the reference signal, the reference signal reflected by the obstacle can be received to realize the communication perception of the obstacle, thereby improving the resource utilization.

[0096] It should be understood that the signal corresponding to the historical channel state information is transmitted by a node receiving a signal transmitted by the first node in the process of channel feedback, and the first node can receive the signal corresponding to the historical channel state information reflected by the obstacle to realize the communication perception of the obstacle and improve the resource utilization.

[0097] It should be understood that when the first node transmits a signal based on a target beam or receives a signal based on a target beam, the signal reflected by the obstacle can be received to realize the communication perception of the obstacle and improve the resource utilization.

[0098] In some embodiments, the determination of the predicted channel state information of the channel corresponding to the transmission signal based on the historical channel state information and the obstacle information can include: inputting the historical channel state information and the obstacle information into a channel state information prediction model to obtain the predicted channel state information; and the channel state information prediction model is used to indicate the association relationship between the historical channel state information and the obstacle information and the predicted channel state information.

[0099] It should be understood that since the channel state prediction model can indicate the association relationship between the historical channel state information and the obstacle information and the predicted channel state information, the association relationship can reflect the trend of change of the channel state information, and therefore, the channel state prediction model can reliably and accurately generate the predicted channel state information based on the historical channel state information and the obstacle information.

[0100] It should be understood that the motion state of the obstacle, the material of the obstacle, and the frequency band corresponding to the channel have different influences on the channel state. Therefore, the association relationship can include at least one of the following: an association relationship between a static obstacle and a channel of different frequency bands, an association relationship between a dynamic obstacle and a channel of different frequency bands, and an association relationship between an obstacle of different materials and a channel of different frequency bands. In this way, the channel state information prediction model can more comprehensively and reliably determine the target beam corresponding to the signal under different frequency bands.

[0101] For example, part of the obstacle can completely block the channel (or signal) of the millimeter wave frequency band, that is, the spatial non-stationary phenomenon, and only have an influence of partially attenuating the signal strength on part of the low frequency band channel.

[0102] In some embodiments, the association relationship between a static obstacle and a channel of different frequency bands can include at least one of the following: a relatively constant influence of a static obstacle on a channel state, an influence of a noise environment on a channel state (such as a scatterer in the air, a basic electromagnetic environment on a transmission path, and background noise).

[0103] In some embodiments, the association relationship between a dynamic obstacle and a channel of different frequency bands can include at least one of the following: an incident angle offset of a channel of different frequency bands caused by a dynamic obstacle, a signal attenuation of different frequency bands caused by a dynamic obstacle, and a delay of a reflection path of a channel of different frequency bands caused by a dynamic obstacle.

[0104] In some embodiments, the channel state prediction model can determine the influence of an obstacle that suddenly appears or disappears on a transmission path on a channel state to obtain predicted channel state information. For example, a car suddenly drives into or drives away from the transmission path.

[0105] In some embodiments, static obstacles and dynamic obstacles can exist simultaneously in the transmission path, and the static obstacles and the dynamic obstacles can have influences on the channel state. The channel state prediction model can simultaneously predict the channel state information based on the association relationship between the static obstacle and the channel of different frequency bands and the association relationship between the dynamic obstacle and the channel of different frequency bands to obtain predicted channel state information under the superimposed influence of the static obstacle and the dynamic obstacle on the channel state.

[0106] In some embodiments, the association relationship between an obstacle of different materials and a channel of different frequency bands can include at least one of the following: reflection of metal on signals of different frequency bands, and reflection or refraction of transparent materials (such as glass) on signals of different frequency bands.

[0107] In some embodiments, the obstacle information comprises obstacle occlusion range or degree dynamic change information of the channel, and the channel state prediction model can determine a trend of influence of the obstacle on the channel state based on the obstacle occlusion range or degree dynamic change information of the channel, so as to determine the channel state information that can be reliably predicted.

[0108] For example, the association between the historical channel state information and the obstacle information indicated by the channel state information prediction model and the predicted channel state information satisfies the following formula (1):

[0109] Wherein, A represents the predicted channel state information, x(T1) represents the channel state information and the obstacle information at T1, x(T2) represents the channel state information and the obstacle information at T2, C represents the environment determination information, and the function f is used to indicate the association between the channel state information and the historical channel state information.

[0110] In some embodiments, the function f can be obtained based on at least one of the following: an interpolation function, a forward estimation-computation method, a sliding window method, a linear function, a logarithmic function, an exponential function, a trigonometric function, and an inverse trigonometric function.

[0111] It should be understood that the interpolation function can estimate the change of the channel state by interpolation method according to the position information of the obstacle at different time points. The interpolation method can be used to predict the channel state at a future time point by using the existing position information when the obstacle position data is sparse.

[0112] It should be understood that the forward estimation-computation method can predict the channel state at the current or future time by using the obstacle position and the channel state information at the previous time in the forward estimation. By calculating the change rate and direction of the obstacle position, the influence of the obstacle on the channel gain, delay spread or reflection path can be estimated.

[0113] It should be understood that the sliding window method can extract local information from time series data by sliding window, and estimate the continuous change of the channel state and the motion trajectory of the obstacle by local smoothing. Based on the sliding window of the last few measurement values, the function f can predict how the obstacle affects the channel state within the window.

[0114] It should be understood that the linear function can be used to describe the linear change of the channel state with the obstacle position, etc.

[0115] It should be understood that the logarithmic function can be used to describe the logarithmic change relationship of the channel fading, etc.

[0116] It should be understood that the exponential function can be used to describe the non-linear decay, etc.

[0117] It should be understood that trigonometric functions (such as the sine function, the cosine function) can be used to describe the phase change of the signal, the angular offset, etc.

[0118] It should be understood that inverse trigonometric functions (such as the inverse tangent function) can be used to calculate the angular relationship between the obstacle and the signal source, etc.

[0119] In some embodiments, the channel state prediction model can be an artificial intelligence model (AI model).

[0120] In some embodiments, the determination of the target beam based on the predicted channel state information can include: in the case where the difference between the predicted channel state information and the historical channel state information is greater than or equal to the difference threshold, transmitting a reference signal and collecting channel state information of the reference signal; determining the target beam based on the channel state information of the reference signal.

[0121] It should be understood that in the case where the difference between the predicted channel state information and the historical channel state information is greater than or equal to the difference threshold, it means that there is a relatively sharp change in the channel state corresponding to the signal transmitted based on the target beam, and there is a large gap between the predicted channel state information and the actual channel state information, and the accuracy of the predicted channel state information is low and the reliability is poor. At this time, the reference signal can be transmitted and the channel state information of the reference signal can be collected. In this way, the channel state information can be collected in real time, and the reliability of the channel state information collected in real time is stronger. Thus, based on the channel state information of the reference signal, the target beam can be more accurately and reliably determined, and the communication quality when transmitting a signal based on the target beam is ensured.

[0122] In some embodiments, in the case where the difference between the predicted channel state information and the historical channel state information is greater than or equal to the difference threshold, the reference signal is transmitted and the channel state information of the reference signal is collected, which can be referred to as an instantaneous measurement mechanism.

[0123] In some embodiments, the predicted channel state information can include at least one of the following: angle information of the predicted channel corresponding to the signal, distance information of the predicted channel, path loss information of the predicted channel, delay spread information of the predicted channel, reflection path of the predicted channel, obstacle information of the predicted channel, rank of the predicted channel, channel quality of the predicted channel, signal strength of the signal corresponding to the predicted channel, power of the signal corresponding to the predicted channel, and visible area corresponding to the predicted channel; the visible area corresponding to the predicted channel is the coverage area of the signal corresponding to the predicted channel.

[0124] It should be understood that based on the at least one information, the characteristics of the channel state can be reflected from multiple dimensions. Therefore, based on the predicted channel state information, the target beam that meets the expected communication demand can be accurately determined.

[0125] In some embodiments, the predicted channel state information can further include at least one of: an incident angle change, a channel gain change, a multipath delay change, a visible area change.

[0126] It should be understood that the incident angle change is used to indicate the shift change of the incident angle when the obstacle movement causes the change of the signal reflection path. In one case, the change of the incident angle can be predicted by processing the obstacle position through a trigonometric function.

[0127] It should be understood that the channel gain change is used to indicate the exponential decline or logarithmic decay of the signal gain that can be presented when the obstacle moves between the user equipment and the base station. At this time, in one case, the change of the signal strength can be predicted based on a logarithmic function or an exponential function.

[0128] It should be understood that the multipath delay change is used to indicate the change of the signal path when the multipath reflection path caused by the obstacle changes over time. At this time, the change of the signal path corresponding to the delay time can be predicted by a linear function or other non-linear function combination.

[0129] It should be understood that the visible area change is used to indicate the change of the visible area at the receiving end caused by the non-stationary change due to the change of the obstacle.

[0130] In some embodiments, based on the at least one of the above information, at least one of the following can be determined: a direction of the target beam, a width of the target beam, a transmission power corresponding to the target beam, a type of the target beam, a precoding matrix corresponding to the target beam, a beamforming parameter corresponding to the target beam, a modulation and coding scheme corresponding to the target beam.

[0131] In some embodiments, the target beam can be obtained by: obtaining a beam determination indication; and determining the target beam based on the beam determination indication.

[0132] In some embodiments, the target beam can be determined by other devices outside the first node. The other devices can send a beam determination indication including the target beam to the first node. The first node can receive the target beam indication to obtain the beam determination indication.

[0133] In some embodiments, the transmission mechanism corresponding to the beam determination indication includes at least one of: a physical downlink control channel (PDCCH) transmission mechanism, a radio resource control signaling transmission mechanism, a physical downlink shared channel (PDSCH) transmission mechanism.

[0134] It should be understood that in the case of the first node being a receiving end, if the receiving end needs to perform multiple steps within a certain time period to achieve switching to the target beam, the beam determination indication can be transmitted through a radio resource control signaling transmission mechanism.

[0135] It should be understood that after the first node switches to the target beam, the beam switching success indication information can be reported to the sending end based on a physical downlink shared channel transmission mechanism, and the channel quality corresponding to the target beam can be fed back based on the physical downlink shared channel transmission mechanism.

[0136] In some embodiments, the beam determination indication includes at least one of the following: a beam type indication field, a precoding matrix indication field, a feedback period adjustment field, a channel quality adjustment field, and a beam switching execution delay field; the feedback period adjustment field is used to instruct the node that feeds back the channel state information to adjust the feedback period; and the channel quality adjustment field is used to instruct the node that feeds back the channel quality to adjust the channel quality evaluation rule.

[0137] It should be understood that the beam type indication field is used to indicate the beam type of the target beam (or the type of the set of sub-beams corresponding to the target beam).

[0138] The precoding matrix indication field is used to indicate the precoding matrix corresponding to the target beam, and the first node can form the target beam based on the precoding matrix.

[0139] The feedback period adjustment field is used to indicate the expected period of channel state information feedback by the first node after the first node transmits a signal based on the target beam. It should be noted that after the first node starts to transmit a signal based on the target beam, the transmission characteristics of the target beam are different from those of the beam used by the first node before. Correspondingly, the target beam responds differently to the environment of the transmission signal, and the corresponding channel state changes when the transmission signal is transmitted. Therefore, the frequency of collecting the channel state information corresponding to the transmission signal based on the target beam needs to be determined again. In this way, data support can be provided to improve the communication quality of the transmission signal based on the target beam.

[0140] The channel quality adjustment field is used to instruct the node that feeds back the channel quality to adjust the channel quality evaluation rule. It should be noted that similar to the explanation of the feedback period adjustment field, in order to better adapt to the transmission characteristics of the target beam, the channel quality evaluation rule needs to be adjusted so that the first node or the node that receives the signal sent by the first node can accurately and reliably reflect the channel quality corresponding to the transmission signal based on the target beam.

[0141] For example, assuming that the target beam is a beam that performs well in the presence of obstacles in the transmission path, and the beam before adjustment is a beam that is good at transmitting in an open area. The beam that performs well in the presence of obstacles can ensure that more signals can reach the receiving end, but the power of the signals received by the receiving end is small. The beam that is good at transmitting in an open area has a higher requirement for the evaluation index of power in the channel quality evaluation rule, and cannot objectively and reasonably evaluate the beam that performs well in the presence of obstacles, and cannot reflect the actual working state of the target beam. Therefore, the beam determination indication can include a channel quality adjustment field to adjust the channel quality evaluation rule.

[0142] It should be understood that, in the case that the first node is the receiving end of the beam determination indication, if the first node successfully switches to the target beam, the channel state information corresponding to the target beam is fed back to the sending end, the sending end can be caused to perform beam strategy adjustment based on the channel state information, and the communication quality is further improved.

[0143] The beam switching execution delay field is used to indicate the execution delay of the first node switching to the target beam. It should be noted that, through the execution delay, the synchronization between the receiving end and the sending end of the signal can be ensured, and the reliability of the communication can be ensured.

[0144] In some embodiments, the beam determination indication can be referred to as a beam switching indication.

[0145] In some embodiments, when the first node is the execution subject of the process of determining the target beam, the first node can determine to transmit a signal based on the target beam in the case that the beam switching condition is met.

[0146] In some embodiments, when the first node is the receiving end of the signal, the node that sends the beam determination indication can send the beam determination indication to the first node in the case that the beam switching condition is met.

[0147] In some embodiments, the above beam switching condition is used to indicate that the channel state corresponding to the predicted channel state information does not meet the expected channel state.

[0148] In some embodiments, the beam switch condition comprises at least one of: a channel quality indicated by the channel quality indicator is lower than a channel quality threshold, the channel quality indicated by the channel quality indicator is continuously decreasing and lower than the channel quality threshold within a preset time length, a change information between the predicted channel state information and the historical channel state information exceeds a change information threshold, a reference signal received power (RSRP) and / or a reference signal received quality (RSRQ) is lower than a quality threshold, the reference signal received power and / or the reference signal received quality is continuously decreasing and lower than the quality threshold, a precoding matrix indicator is used to indicate that an occlusion ratio of a signal propagation path is greater than an occlusion ratio threshold, a rank number corresponding to a channel matrix is reduced, the rank number corresponding to the channel matrix is less than a rank number threshold, a signal transmitter and a signal receiver are disconnected, a synchronization signal block (SSB) feedback indicates that a signal fading degree is greater than a fading degree threshold, the signal receiver receives a beam failure recovery request, the SSB feedback or channel state information reference signal feedback indicates that a direct path signal attenuation degree is greater than an attenuation degree threshold, or the signal receiver receives a beam failure recovery request, the SSB feedback or channel state information reference signal feedback indicates that a direct path signal loss, a radio link failure (RLF) early warning mechanism indicates that there is a risk of disconnection of a signal link, a radio resource control (RRC) or a physical layer determines that there is an occlusion of a signal transmission path based on obstacle information, a motion condition of the receiver meets a preset motion condition, a channel delay spread increases, a phase change value is greater than a phase change threshold, a selectivity feature of a channel frequency is enhanced, and an offset degree of a signal input angle is greater than an offset degree threshold.

[0149] In some embodiments, the beam type of the target beam is one of: a discrete Fourier transform beam (DFT beam), a discrete fractional Fourier transform beam (DFRFT beam), a Bessel beam, an Airy beam, a Mathieu beam, a Weber beam, and a self-defined beam. The self-defined beam is a beam customized based on historical channel state information and obstacle information to meet a communication requirement of a transmission signal.

[0150] In some embodiments, the process of determining the target beam can correspond to one of the following scenarios:

[0151] Scenario one: in the case that the distance between the transmitting end and the receiving end continuously decreases within a preset time duration and is smaller than a distance threshold, the fractional discrete Fourier transform beam can be determined as the target beam.

[0152] Scenario two: in the case that the precoding matrix is used to indicate that the signal propagation path is partially blocked, the Bessel beam can be determined as the target beam.

[0153] Scenario three: in the case that the rank of the channel matrix corresponds to the feedback indication indicating that the channel multiplexing capability is reduced, the fractional discrete Fourier transform beam can be determined as the target beam.

[0154] Scenario four: in the case that the change information between the predicted channel state information and the historical channel state information exceeds a change information threshold, the Airy beam can be determined as the target beam.

[0155] Scenario five: in the case that the reference signal received power and / or the reference signal received quality is lower than a quality threshold, the fractional discrete Fourier transform beam can be determined as the target beam to improve the focusing of the signal; or the Airy beam can be determined as the target beam to enable the signal to bypass the obstacle.

[0156] Scenario six: in the case that the reference signal received power and / or the reference signal received quality continuously decreases and is lower than a quality threshold, the fractional discrete Fourier transform beam can be determined as the target beam to improve the focusing of the signal; or the Airy beam can be determined as the target beam to improve the received power of the receiving end.

[0157] Scenario seven: based on determining that the environment corresponding to the predicted channel state information is an environment suitable for direct-diameter signals and unobstructed, and the distance between the transmitting end and the receiving end is small, switching from the discrete Fourier transform beam to the fractional discrete Fourier transform beam. In addition, the fractional discrete Fourier transform beam is also suitable for two-dimensional spatial multiplexing scenarios.

[0158] Scenario eight: in the case of determining that there is an obstructed channel partially blocked, switching from the fractional discrete Fourier transform beam to the Bessel beam. In this way, the non-diffractive and self-healing properties of the Bessel beam can be utilized to enable the signal to bypass the local obstacle.

[0159] Scenario nine: in the case of determining that the obstacle completely blocks the channel or most of the channel is blocked, the Airy beam can be determined as the target beam to enable the signal to bypass the obstacle.

[0160] Scenario ten: in the case of determining that the obstacle that completely blocks the channel becomes partially obstructed, switching from the Airy beam to the Bessel beam.

[0161] Scenario eleven: in the case where the channel state or the obstacle information meets the self-defined beam usage condition, the self-defined beam is determined as the target beam. The self-defined beam usage condition can be used to indicate that the existing beam cannot meet the communication demand.

[0162] Scenario twelve: in the case where the occlusion is completely removed, the fractional discrete Fourier transform beam can be switched.

[0163] Scenario thirteen: in the case where the channel state or the obstacle does not meet the self-defined beam usage condition, the self-defined beam can be switched to other beams outside the self-defined beam.

[0164] In some embodiments, the self-defined beam can be referred to as a customized beam.

[0165] In some embodiments, the S301 described above is implemented by the following manner based on the target beam transmission signal: based on the codebook corresponding to the target beam transmission signal; the codebook is determined by the beam type of the target beam.

[0166] It should be understood that the code words in the codebook corresponding to one beam have the same structure and quantization accuracy.

[0167] In some embodiments, the codebook corresponding to the target beam is from a codebook set including multiple codebooks.

[0168] For example, the codebook set can include at least one of the following codebooks: a codebook corresponding to a discrete Fourier transform beam, a codebook corresponding to a fractional discrete Fourier transform beam, a codebook corresponding to a Bessel beam, a codebook corresponding to an Airy beam, a codebook corresponding to a Mathieu beam, a codebook corresponding to a Weber beam, and a codebook corresponding to a self-defined beam.

[0169] In some embodiments, the channel state information corresponding to the target beam transmission signal includes uplink channel state information and downlink channel state information.

[0170] In some embodiments, the coordinated transmission strategy of the uplink and the downlink can be adjusted based on the historical channel state information of the uplink, the historical channel state information of the downlink, and the obstacle information. In this way, the communication quality of the uplink and the downlink communication can be ensured.

[0171] In some embodiments, the coordinated transmission strategy of the uplink and the downlink is adjusted based on the historical channel state information of the uplink, the historical channel state information of the downlink, and the obstacle information, which is completed by the base station.

[0172] In some embodiments, the predicted channel state information of the uplink can be determined based on historical channel state information of the uplink, and obstacle information of the uplink; and the uplink transmission strategy can be adjusted based on the predicted channel state information of the uplink.

[0173] In some embodiments, the uplink transmission strategy comprises at least one of the following: beam direction, precoding matrix.

[0174] The embodiments of the present disclosure can divide the functional modules of the communication device according to the method embodiments described above. For example, each functional module can be divided according to each function, or two or more functions can be integrated into one functional module. The integrated module can be implemented in the form of hardware or software. It should be noted that the division of the modules in the embodiments of the present disclosure is illustrative, and is only a logical function division. When actually implemented, another division manner can be used. The following will be described taking the example of dividing each functional module according to each function.

[0175] FIG. 4 is a structural schematic diagram of a communication device provided by an embodiment of the present disclosure. The communication device can perform the communication method provided by the method embodiments described above. As shown in FIG. 4, the communication device comprises a signal transmission module 401.

[0176] The signal transmission module 401 is configured to transmit a signal based on a target beam. The target beam is determined based on historical channel state information and obstacle information. The obstacle information is information of an obstacle on a transmission path of the signal.

[0177] In the case of implementing the functions of the integrated module in the form of hardware, the present disclosure provides another possible structure of the communication device involved in the above embodiments. As shown in FIG. 5, the communication device comprises a processor 502 and a bus 504. In some embodiments, the communication device can further comprise a memory 501; and in some embodiments, the communication device can further comprise a communication interface 503.

[0178] The processor 502 can be an implementation or execution of various exemplary logical blocks, modules and circuits described in combination with the embodiments of 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, a transistor logic device, a hardware component or any combination thereof. It can implement or execute various exemplary logical blocks, modules and circuits described in combination with the embodiments of the present disclosure. The processor 502 can also be a combination of implementation computing functions, such as one or more microprocessor combinations, combinations of DSP and microprocessor, etc.

[0179] The communication interface 503 is configured to connect with other devices through a communication network. The communication network can be an Ethernet, a wireless access network, a wireless local area network (WLAN), or the like.

[0180] 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, 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 that can be accessed by a computer, but is not limited thereto.

[0181] As an implementation manner, the memory 501 can exist independently of the processor 502, and the memory 501 can be connected with the processor 502 through the bus 504, for storing instructions or program codes. When the processor 502 invokes and executes the instructions or program codes stored in the memory 501, the method provided by the embodiments of the present disclosure can be implemented.

[0182] In another implementation manner, the memory 501 can also be integrated with the processor 502.

[0183] The bus 504 can be an extended industry standard architecture (EISA) bus or the like. The bus 504 can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in FIG. 5, but it does not mean that there is only one bus or only one type of bus.

[0184] Some embodiments of the present disclosure provide a computer-readable storage medium (for example, a non-transitory computer-readable storage medium) having computer program instructions stored therein, and the computer program instructions, when executed on a computer, cause the computer to execute the method described in any of the above embodiments.

[0185] By way of example, the computer-readable storage media described above can include, but is not limited to, magnetic storage devices (e.g., hard disk, floppy disk, or magnetic tape), optical storage devices (e.g., compact disk (CD), digital versatile disk (DVD), etc.), smart cards, and flash memory devices (e.g., EPROM, card, stick, or key drive). The various computer-readable storage media described above can represent one or more devices and / or other machine-readable storage media for storing information. The term "machine-readable storage medium" shall accordingly be taken to include a single medium or multiple media that store one or more sets of instructions that when executed by a machine, such as a computer, cause the machine to perform any one of the methodologies described herein.

[0186] The embodiments of the present disclosure provide a computer program product containing instructions, which, when the computer program product is run on a computer, cause the computer to execute the method described in any one of the above embodiments.

[0187] The above merely provides the specific implementation of the present disclosure, but the protection scope of the present disclosure is not limited thereto, and any change or replacement within the technical scope disclosed by the present disclosure shall be covered within 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, wherein, The method is applied to a first node, and comprises: transmitting a signal based on a target beam; the target beam is determined based on historical channel state information and obstacle information; the obstacle information is information of an obstacle on a transmission path of the signal.

2. The method of claim 1, wherein, The determination process of the target beam comprises: based on the historical channel state information and the obstacle information, determining predicted channel state information of a channel corresponding to transmission of the signal; based on the predicted channel state information, determining the target beam.

3. The method of claim 2, wherein, The historical channel state information is obtained by: based on channel feedback, determining the historical channel state information.

4. The method of claim 3, wherein, The frequency of the channel feedback is determined based on the change speed of all or part of the historical channel state information.

5. The method of claim 2, wherein, The obstacle information is obtained by: determining the obstacle information through communication sensing.

6. The method of claim 5, wherein, The frequency of the communication sensing is determined based on the change speed of the obstacle information.

7. The method of claim 6, wherein, The obstacle information comprises a speed of the obstacle; the obstacle comprises at least one of a static obstacle and a dynamic obstacle; the speed of the static obstacle is zero; the speed of the dynamic obstacle is not zero.

8. The method of claim 7, wherein, The dynamic obstacle comprises multiple types; the type of the dynamic obstacle is determined by a speed interval in which the change speed of the obstacle information is located.

9. The method of claim 5, wherein, The sensing signal corresponding to the communication sensing comprises at least one of a sensing signal transmitted by the first node, a reference signal, a signal corresponding to the historical channel state information, and the signal corresponding to the target beam; the reference signal is a signal transmitted by the first node for obtaining channel state information.

10. The method of claim 2, wherein, The determination of the predicted channel state information of the channel corresponding to the transmission of the signal based on the historical channel state information and the obstacle information comprises: inputting the historical channel state information and the obstacle information into a channel state information prediction model to obtain the predicted channel state information; the channel state information prediction model is used to indicate the association between the historical channel state information and the obstacle information and the predicted channel state information.

11. The method of claim 2, wherein, The determination of the target beam based on the predicted channel state information comprises: in the case where the difference between the predicted channel state information and the historical channel state information is greater than or equal to a difference threshold, transmitting a reference signal and collecting channel state information of the reference signal; based on the channel state information of the reference signal, determining the target beam.

12. The method of claim 2, wherein, The determination of the target beam based on the predicted channel state information comprises: in the case where the difference between the predicted channel state information and the historical channel state information is less than the difference threshold, determining a target type of beam as the target beam based on the predicted channel state information satisfying a use condition of the target type of beam.

13. The method of claim 2, wherein, The predicted channel state information comprises at least one of the following: angle information of a predicted channel corresponding to the signal, distance information of the predicted channel, path loss information of the predicted channel, delay spread information of the predicted channel, reflection path of the predicted channel, obstacle information of the predicted channel, rank of the predicted channel, channel quality of the predicted channel, signal strength of a signal corresponding to the predicted channel, power of the signal corresponding to the predicted channel, and a visible area corresponding to the predicted channel.

14. The method of claim 1, wherein, The target beam is obtained by: obtaining a beam determination indication; determining the target beam based on the beam determination indication.

15. The method of claim 14, wherein, The beam determination indication comprises at least one of the following: a beam type indication field, a precoding matrix indication field, a feedback period adjustment field, a channel quality adjustment field, and a beam switching execution delay field; the feedback period adjustment field is used to instruct a node feeding back channel state information to adjust a feedback period; and the channel quality adjustment field is used to instruct the node feeding back channel quality to adjust a channel quality evaluation rule.

16. The method of claim 1, wherein, The target beam is one of the following: a discrete Fourier transform beam, a fractional discrete Fourier transform beam, a Bessel beam, an Airy beam, a Mathieu beam, a Weber beam, and a self-defined beam; the self-defined beam is a beam customized based on historical channel state information and the obstacle information and satisfying a communication requirement of transmitting the signal.

17. The method of claim 16, wherein, The signal is transmitted based on the target beam, comprising: transmitting the signal based on a codebook corresponding to the target beam; the codebook is determined based on a beam type of the target beam.

18. The method of claim 1, wherein, The historical channel state information comprises at least one of the following: angle information of a historical channel corresponding to the signal, distance information of the historical channel, path loss information of the historical channel, delay spread information of the historical channel, reflection path information of the historical channel, rank of the historical channel, channel quality of the historical channel, signal strength of a signal corresponding to the historical channel, power of the signal corresponding to the historical channel, and a visible area corresponding to the historical channel.

19. The method of claim 1, wherein, The obstacle information comprises at least one of the following: position information of the obstacle, speed information of the obstacle, acceleration information of the obstacle, motion trajectory of the obstacle, profile information of the obstacle, material information of the obstacle, and occlusion proportion information of the obstacle on a channel corresponding to the signal.

20. A communications device comprising: a memory and a processor; the memory and the processor are coupled; the memory is configured to store instructions executable by the processor; the processor executes the instructions to perform the method in any one of claims 1-19.

21. A computer readable storage medium, wherein, The computer readable storage medium stores computer instructions, and when the computer instructions are run on a computer, the computer executes the method in any one of claims 1-19.

22. A computer program product, wherein, The computer program product comprises computer program instructions, and when the computer program instructions are executed by a processor, the method in any one of claims 1-19 is implemented.

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