Communication method and related apparatus

Abstract

A communication method and a related apparatus. In the method, second multipath information determined by a first communication apparatus on the basis of first multipath information and first channel information includes N pieces of first path information, and each of the N pieces of first path information is used for indicating path information of one or more sub-paths included in one of N paths. Compared with the first multipath information indicating path information of the N paths, the second multipath information can indicate path information of one or more sub-paths included in each of the N paths. In this way, the first communication apparatus obtains, on the basis of the first multipath information and measured first channel information, path information of sub-paths included in each path, and thus the precision of the acquired multipath information is improved, thereby improving the multipath prediction performance.

Description

A communication method and related apparatus

[0001] This application claims priority to Chinese Patent Application No. 202411458484.4, filed on October 17, 2024, entitled "A Communication Method and Related Device", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of communication technology, and in particular to a communication method and related apparatus. Background Technology

[0003] In communication systems, multipath propagation refers to the process where, after a signal is transmitted, it travels through two or more paths in the wireless propagation environment before reaching the receiver.

[0004] Generally, the reflection and diffraction of electromagnetic waves by objects in the environment leads to multipath propagation. Multipath signals traveling along different paths may have different multipath information (e.g., time delay, angle, or path loss, or one or more of these). Correspondingly, the signal received by the receiver can be a superposition of these multipath signals. Communication equipment can obtain multipath information through multipath prediction (or predicting multipath) and use this information to obtain signal gain for multipath transmission. For example, this signal gain can include spatial diversity gain, improved signal transmission reliability, etc.

[0005] However, improving the performance of multipath prediction in the above process is a technical problem that urgently needs to be solved. Summary of the Invention

[0006] This application provides a communication method and related apparatus for improving the performance of multipath prediction.

[0007] The first aspect of this application provides a communication method applied to a first communication device, for example, the method being executed by the first communication device. The first communication device may be a communication equipment (such as a terminal device or network device), or it may be a component of the communication equipment (e.g., a circuit or chip responsible for communication functions (such as a modem chip, also known as a baseband chip, or a system-on-a-chip (SoC) chip containing a modem core, or a system-in-package (SIP) chip), or it may be a logic module or software capable of implementing all or part of the functions of the communication equipment).

[0008] In this method, a first communication device acquires first multipath information, which indicates path information of N paths between the first and second communication devices, where N is a positive integer; the first communication device acquires first channel information between the first and second communication devices, which is related to the measurement result of a first reference signal, for example, the first channel information is determined based on the measurement result of the first reference signal; the first communication device determines second multipath information, which is related to the first multipath information and the first channel information, for example, the second multipath information is determined based on the first multipath information and the first channel information; wherein, the second multipath information includes N first path information, which includes the i-th first path information, the N paths include the i-th path, and the i-th first path information is used to indicate the path information of each sub-path in one or more sub-paths included in the i-th path, where i takes the value from 1 to N.

[0009] Based on the above scheme, the first multipath information acquired by the first communication device is used to indicate the path information of N paths between the first and second communication devices. The first channel information acquired by the first communication device is related to the measurement result of the first reference signal. Subsequently, the second multipath information determined by the first communication device includes N first path information, and each of the N first path information is used to indicate the path information of one or more sub-paths contained in one of the N paths. Compared to the first multipath information indicating the path information of N paths, the second multipath information can indicate the path information of one or more sub-paths contained in each of the N paths. In this way, the first communication device obtains the path information of the sub-paths contained in each path based on the first multipath information and the measured first channel information, which can improve the accuracy of the acquired multipath information and thus improve the performance of multipath prediction.

[0010] Optionally, the first path includes one or more sub-paths, such as the path information of the first path indicating the path information of the combination of the one or more sub-paths, or the path information of the first path indicating the combined path formed by the one or more sub-paths.

[0011] For example, a path formed by multiple sub-paths, or a joint path formed by multiple sub-paths, refers to a path whose path information is calculated from the path information of the multiple sub-paths. For instance, the angle of the joint path can be the average of the angles of the multiple sub-paths, the delay of the joint path can be the average of the delays of the multiple sub-paths, and the power of the joint path can be the sum of the powers of the multiple sub-paths. Alternatively, the power of each sub-path can be used as a weight, the angle of the joint path can be a weighted average of the angles of the multiple sub-paths, and the delay of the joint path can be a weighted average of the delays of the multiple sub-paths.

[0012] For example, the i-th path among the N paths mentioned above can contain M. i (M i (where M is a positive integer) Sub-diameters, that is, the total number of sub-diameters contained in N diameters can be expressed as K (K = M1 + M2 + ... + M...). N The first multipath information can indicate the path information of each of the N paths, and each of the N paths contains one or more sub-paths from the K sub-paths; in other words, the first multipath information can indicate the path information of one or more sub-paths combined from the K sub-paths, and the second multipath information can indicate the path information of each of the K sub-paths.

[0013] Optionally, the aforementioned second multipath information is generated based on prediction / simulation of the first multipath information and the first channel information. The sub-path indicated by the second multipath information may not actually exist; therefore, the sub-path can be called a virtual path. For example, a path containing one or more sub-paths can be replaced by: a cluster center containing one or more virtual paths (i.e., the aforementioned sub-path can be a virtual path, and the aforementioned path can be a cluster center), or a joint path containing one or more paths (i.e., the aforementioned sub-path can be a path, and the aforementioned path can be a joint path).

[0014] Optionally, the first communication device may acquire the first channel information in a variety of ways.

[0015] For example, after receiving a first reference signal from a second communication device, the first communication device may determine the first channel information based on the measurement result of the first reference signal.

[0016] For example, after receiving a first reference signal from a first communication device, the second communication device can determine the first channel information based on the measurement result of the first reference signal, and then send the first channel information to the first communication device.

[0017] For example, after receiving a first reference signal from the first communication device, the second communication device can perform a measurement based on the first reference signal to obtain a measurement result, and then send the measurement result to the first communication device, so that the first communication device can determine the first channel information based on the measurement result.

[0018] In one possible implementation of the first aspect, the first communication device determines the second multipath information by: determining N second path information based on the first multipath information; wherein the i-th second path information among the N second path information indicates the initial path information of each of the one or more sub-paths; and the first communication device determines the second multipath information based on the second channel information corresponding to the N second path information and the first channel information.

[0019] Based on the above scheme, in the process of determining the second multipath information, the first communication device can determine N second path information based on the first multipath information, and then determine the second multipath information based on the second channel information corresponding to the N second path information and the first channel information. The i-th second path information among the N second path information indicates the initial path information of each sub-path in the one or more sub-paths. Therefore, the first communication device can update the initial path information of each sub-path based on the measured first channel information to obtain second path information indicating the updated path information of each sub-path (for example, the first communication device can update the initialized virtual path using the measured first channel information to obtain the second path information).

[0020] In one possible implementation of the first aspect, the second channel information is obtained by processing the N second path information based on the first model.

[0021] Based on the above scheme, the first communication device can process N second path information based on the first model to obtain second channel information, and obtain the second channel information quickly through the model processing process.

[0022] For example, the first model can be used for time-frequency domain transformation (e.g., the first model can be a time-frequency domain transformation model), the input of the first model can include at least time-domain channel information (optionally, the input of the first model can also include channel configuration information described later), and the output of the first model can include frequency-domain channel information. For example, the time-domain channel information can indicate the channel impulse response (CIR), and multipath information (e.g., the N second path information mentioned above) can be an implementation example of CIR; the frequency-domain channel information can indicate the channel frequency response (CFR), and the second channel information can be an implementation example of CFR.

[0023] Optionally, during the process of the first communication device determining the second multipath information, the first communication device can obtain the second multipath information through processing by the second model. For example, the input of the second model may include the first multipath information and the first channel information, and the output of the second model may include the second multipath information. The first model may be a sub-model of the second model, or the first model may be a part of the second model.

[0024] Optionally, the model involved in this application (such as the first model or the second model) can be implemented in a variety of ways, such as a mathematical model, an artificial intelligence (AI) model, a neural network model, an AI neural network model, a machine learning model, or an AI processing model.

[0025] In one possible implementation of the first aspect, the method further includes: the first communication device receiving channel configuration information, the channel configuration information indicating channel configuration parameters of the first communication device and / or channel configuration parameters of the second communication device; wherein the input of the first model includes the channel configuration information.

[0026] Based on the above scheme, the input of the first model can also include channel configuration information, so that the first model can process the specified channel configuration information and N second path information to obtain the second channel information, thereby improving the accuracy of the second channel information.

[0027] Optionally, the first communication device may obtain the channel configuration information in other ways, such as by pre-configuring or pre-defining the channel configuration information.

[0028] Optionally, the above channel configuration parameters include at least one of the following: number of antennas, number of ports, frequency point, or bandwidth.

[0029] Optionally, the above channel configuration information can be replaced with other terms, such as frequency domain channel information or frequency domain information.

[0030] In one possible implementation of the first aspect, the second multipath information is used to determine third channel information between the first communication device and the second communication device, and the third channel information is used to determine precoding information between the first communication device and the second communication device.

[0031] Based on the above scheme, the second multipath information used to indicate the path information of each subpath can be used to determine the third channel information. Furthermore, the third channel information can be used to determine the precoding information between the first communication device and the second communication device, so as to obtain more accurate and / or more precise precoding information through the path information of the subpath (i.e., high-precision path information), thereby improving the performance of subsequent data transmission based on the precoding information.

[0032] Optionally, the first channel information and the third channel information satisfy at least one of the following:

[0033] The time-domain resources corresponding to the first channel information are different from those corresponding to the third channel information.

[0034] The frequency domain resources corresponding to the first channel information and the frequency domain resources corresponding to the third channel information are different; or,

[0035] The spatial resources corresponding to the first channel information are different from those corresponding to the third channel information.

[0036] Based on the above scheme, the third channel information can be used for channel prediction based on the measured first channel information, including but not limited to prediction in the time domain, frequency domain, and spatial domain, and improve the performance of channel prediction.

[0037] In one possible implementation of the first aspect, the method further includes: the first communication device receiving first information, the first information indicating configuration information corresponding to the second multipath information.

[0038] Based on the above scheme, the first communication device can also receive the first information and obtain the configuration information corresponding to the second multipath information through the first information, so as to realize the prediction of the second multipath information through the configuration information.

[0039] Optionally, the above configuration information can be pre-configured or pre-defined.

[0040] Optionally, the aforementioned channel configuration information may be included in the first information, or the aforementioned channel configuration information may be included in the configuration information corresponding to the second multipath information, or the aforementioned channel configuration information may be included in other messages / information / signaling that are different from the first information.

[0041] Optionally, the above configuration information is used at least to configure the number of sub-paths corresponding to (or included in) some or all of the N paths. In this way, the first communication device can quickly determine the path information of the sub-paths by means of the number of sub-paths indicated by the configuration information, and improve the accuracy of the obtained path information of the sub-paths, so as to improve the performance of subsequent data transmission based on the precoded information corresponding to the path information of the sub-paths.

[0042] Optionally, the configuration information includes at least one of the following:

[0043] The first indication information indicates the resource of the first reference signal;

[0044] The second instruction information instructs the AI ​​model to acquire the first multipath information;

[0045] The third instruction information indicates the offset of the model parameters of the AI ​​model that acquires the first multipath information, wherein the offset is the same for different communication devices;

[0046] The fourth instruction information indicates the parameters for determining the N second path information; or

[0047] The fifth instruction information indicates the parameters used to determine the second multipath information.

[0048] In one possible implementation of the first aspect, the i-th first path information among the N first path information includes at least one of the following:

[0049] The sixth indication information indicates the number of sub-paths corresponding to (or contained in) the i-th path of the N paths;

[0050] The seventh indication information indicates at least one of the following: time delay, angle, power, or phase of the sub-path corresponding to (or included in) the i-th path of the N paths; or

[0051] The eighth indication information indicates the correlation between the channel information corresponding to the i-th first path information and the first channel information.

[0052] Based on the above scheme, the second multipath information may include N first path information, and each of the N first path information may include at least one of the above, that is, the path information of each sub-path obtained by the first communication device may include at least one of the above.

[0053] In one possible implementation of the first aspect, the method further includes: the first communication device transmitting second information indicating the second multipath information.

[0054] Based on the above scheme, the first communication device can also send second information indicating the second multipath information, so that the receiver of the second information can obtain the second multipath information. Subsequently, the receiver can determine the precoding information based on the second multipath information to improve data transmission performance.

[0055] In one possible implementation of the first aspect, the method further includes: the first communication device receiving third information indicating resources of a second reference signal; the second reference signal being used to determine fourth channel information between the first communication device and the second communication device; wherein the channel dimension corresponding to the fourth channel information is greater than the channel dimension corresponding to the first channel information; wherein the fourth channel information is used to update the second multipath information to obtain updated second multipath information.

[0056] Based on the above scheme, the first communication device can also receive resources indicating the second reference signal, and update the second multipath information based on the fourth channel information corresponding to the second reference signal, so as to obtain more accurate second path information.

[0057] Furthermore, the aforementioned second reference signal can be a performance monitoring reference signal. The channel dimension corresponding to the fourth channel information determined by the second reference signal is greater than the channel dimension corresponding to the first channel information. That is, the pilot density of the former is greater than the pilot density of the latter. More accurate updated second path information can be obtained through channel information with a larger channel dimension. Subsequently, the data transmission performance can be improved through the precoding information corresponding to the updated second path information.

[0058] Optionally, the channel dimension represented by the channel information may include one or more dimensions such as a spatial dimension, a frequency domain dimension, and a time domain dimension. Generally, the spatial dimension may include the dimension of the antenna port of the signal transmitter (i.e., the transmit antenna dimension) and the dimension of the antenna port of the signal receiver (i.e., the receive antenna dimension). In this application, the channel dimension represented by the channel information includes three channel dimensions as an example: one channel dimension is represented as T or T1, another channel dimension is represented as R or R1, and another channel dimension is represented as F or F1.

[0059] The channel dimension will be described below with some examples.

[0060] For example, the channel dimension represented by the first channel information is [T1, R1, F1], and the channel dimension represented by the fourth channel information is [T, R, F]. The channel dimension corresponding to the fourth channel information is greater than the channel dimension corresponding to the first channel information, satisfying at least one of the following: T is greater than T1, R is greater than R1, and F is greater than F1. Therefore, the first communication device can obtain the fourth channel information with a higher channel dimension based on the first channel information with a lower channel dimension, and the first channel information with a lower channel dimension is determined by a first reference signal. Thus, the first communication device can obtain the higher-dimensional channel information based on the lower-dimensional channel information determined by the reference signal through the above processing, thereby reducing the overhead of the reference signal, improving resource utilization, and reducing the power consumption of the terminal device.

[0061] In one implementation example, the spatial transmission process of the reference signal includes the process of the antenna port of the signal transmitting end transmitting the reference signal and the process of the antenna port of the signal receiving end receiving the reference signal. That is, the dimension of the channel information in the spatial domain can correspond to the transmitting and receiving ports of the reference signal. In other words, the dimension of the reference signal in the spatial domain can be represented as [T, R, F], where T (or T1) represents the antenna port of the signal transmitting end, and R (or R1) represents the antenna port of the signal receiving end. In other words, T greater than T1 can be understood as: the number of antenna ports of the signal transmitting end represented by the fourth channel information is greater than the number of antenna ports of the signal transmitting end represented by the first channel information; R greater than R1 can be understood as: the number of antenna ports of the signal receiving end represented by the fourth channel information is greater than the number of antenna ports of the signal receiving end represented by the first channel information.

[0062] In another implementation example, during the transmission and reception of the reference signal, the dimension of the reference signal in the frequency domain can correspond to the frequency domain resources carrying the reference signal. In other words, the dimension of the reference signal in the frequency domain can be represented as [F] in [T, R, F], where F (or F1) represents the frequency domain resources carrying the reference signal (e.g., one or more frequency domain units contained in the frequency domain resources). In other words, F greater than F1 can be understood as: the number of frequency domain units contained in the frequency domain resources represented by the fourth channel information is greater than the number of frequency domain units contained in the frequency domain resources represented by the first channel information.

[0063] In one possible implementation of the first aspect, the method further includes: the first communication device sending fourth information indicating the updated second multipath information.

[0064] Based on the above scheme, the first communication device can also send second information, so that the receiver of the second information can obtain the updated second multipath information and improve the data transmission performance based on the precoding information corresponding to the updated second path information.

[0065] In one possible implementation of the first aspect, the method further includes: the first communication device receiving or transmitting fifth information indicating sub-path map information, the sub-path map information indicating sub-path information between the second communication device and communication devices at one or more locations.

[0066] Optionally, sub-path map information can be replaced with other descriptions, such as sub-path information, sub-path map, multi-path map, multi-path map information, map information, xxx, etc.

[0067] Based on the above scheme, the first communication device can also receive or send fifth information, so that the recipient of the fifth information can obtain sub-path map information and subsequently communicate based on the sub-path information indicated by the sub-path map information, thereby improving communication performance.

[0068] Optionally, the implementation of sub-path information can refer to the first path information described above. For example, sub-path information can indicate at least one of the following:

[0069] The number of sub-paths corresponding to (or contained in) each path (refer to the sixth instruction information);

[0070] At least one of the following for each sub-path: time delay, angle, power, or phase (see information in section 7); or

[0071] The correlation between the channel information corresponding to the sub-path information and the measured channel information (refer to the eighth indication information).

[0072] Optionally, the subpath map information may also include other information, such as the location information of the environment object (EO) corresponding to the communication device at one or more of the above locations, the object type information of the environment object corresponding to the communication device at one or more of the above locations, and one or more of the location information of the communication device at one or more locations.

[0073] In one possible implementation of the first aspect, the method further includes: the first communication device receiving or sending sixth information, the sixth information being used to update the number of sub-paths corresponding to (or included in) some or all of the N paths.

[0074] Based on the above scheme, after determining the second multipath information, the first communication device can also receive or send sixth information, so that the receiver of the sixth information can update the number of subpaths based on the sixth information, and subsequently obtain more accurate updated second multipath information through the updated number of subpaths, and subsequently improve data transmission performance through the precoding information corresponding to the updated second path information.

[0075] Optionally, the sixth piece of information includes at least one of the following:

[0076] The ninth instruction (i.e., the sixth instruction indicating the addition of one or more sub-paths) indicates the addition of at least one sub-path among the j-th path of the N paths; or

[0077] The tenth instruction (i.e., the sixth instruction indicates the deletion of one or more sub-paths through the tenth instruction) indicates the deletion of at least one sub-path from the k-th path among the N paths;

[0078] Where j takes some or all of the values ​​from 1 to N, k takes some or all of the values ​​from 1 to N, and j is not equal to k.

[0079] The second aspect of this application provides a communication method applied to a second communication device, such as being executed by the second communication device, which may be a communication device (e.g., a terminal device or a network device), or the second communication device may be a component of the communication device (e.g., a circuit or chip responsible for communication functions (e.g., a modem chip, also known as a baseband chip, or a SoC chip or SIP chip containing a modem core, etc.), or the second communication device may also be a logic module or software capable of implementing all or part of the functions of the communication device.

[0080] In this method, a second communication device determines first information, which indicates configuration information corresponding to second multipath information; wherein, the configuration information is at least used to configure the number of sub-paths corresponding to (or included in) some or all of the N paths between the first and second communication devices; the second communication device sends the first information; wherein, the second multipath information is related to the first multipath information and the first channel information between the first and second communication devices, for example, the second multipath information is determined based on the first multipath information and the first channel information, and the first channel information is related to the measurement result of the first reference signal, for example, the first channel information is determined based on the measurement result of the first reference signal; the first multipath information indicates the path information of the N paths, where N is a positive integer; the second multipath information includes N first path information, the N first path information includes the i-th first path information, the N paths include the i-th path, and the i-th first path information is used to indicate the path information of each sub-path among one or more sub-paths included in the i-th path, where i takes the value from 1 to N.

[0081] Based on the above scheme, the first information sent by the second communication device to the first communication device can indicate the configuration information corresponding to the second multipath information. Accordingly, the first communication device can determine the second multipath information based on this configuration information. The second multipath information determined by the first communication device includes N first path information entries, and each of these N first path information entries indicates the path information of one or more sub-paths contained in one of the N paths. Compared to the first multipath information indicating the path information of N paths, the second multipath information can indicate the path information of one or more sub-paths contained in each of the N paths. In this way, the first communication device obtains the path information of the sub-paths contained in each path based on the first multipath information and the measured first channel information, which can improve the accuracy of the acquired multipath information and thus improve the performance of multipath prediction.

[0082] Optionally, the above configuration information includes at least one of the following:

[0083] The first indication information indicates the resource of the first reference signal;

[0084] The second instruction information instructs the AI ​​model to acquire the first multipath information;

[0085] The third instruction information indicates the offset of the model parameters of the AI ​​model that acquires the first multipath information, wherein the offset is the same for different communication devices;

[0086] The fourth instruction information indicates the parameters for determining the N second path information; or

[0087] The fifth instruction information indicates the parameters used to determine the second multipath information.

[0088] In one possible implementation of the second aspect, the first multipath information is used to determine N second path information, wherein the i-th second path information among the N second path information indicates the initial path information of each sub-path in the one or more sub-paths; wherein the second channel information corresponding to the N second path information and the first channel information are used to determine the second multipath information.

[0089] Based on the above scheme, in the process of the first communication device determining the second multipath information, the first communication device can determine N second path information based on the first multipath information, and then determine the second multipath information based on the second channel information corresponding to the N second path information and the first channel information. The i-th second path information among the N second path information indicates the initial path information of each sub-path in the one or more sub-paths. Therefore, the first communication device can update the initial path information of each sub-path based on the measured first channel information to obtain second path information indicating the updated path information of each sub-path (for example, the first communication device can update the initialized virtual path using the measured first channel information to obtain the second path information).

[0090] In one possible implementation of the second aspect, the second channel information is obtained by processing the N second path information based on the first model.

[0091] Based on the above scheme, the first communication device can process N second path information based on the first model to obtain second channel information, and obtain the second channel information quickly through the model processing process.

[0092] In one possible implementation of the second aspect, the method further includes: the second communication device sending channel configuration information, the channel configuration information indicating channel configuration parameters of the first communication device and / or the channel configuration parameters of the second communication device; wherein the input of the first model includes the channel configuration information.

[0093] Based on the above scheme, the input of the first model can also include channel configuration information, so that the first model can process the specified channel configuration information and N second path information to obtain the second channel information, thereby improving the accuracy of the second channel information.

[0094] Optionally, the channel configuration parameters include at least one of the following: number of antennas, number of ports, frequency point, or bandwidth.

[0095] In one possible implementation of the second aspect, the second multipath information is used to determine third channel information between the first communication device and the second communication device, and the third channel information is used to determine precoding information between the first communication device and the second communication device.

[0096] Based on the above scheme, the second multipath information used to indicate the path information of each subpath can be used to determine the third channel information. Furthermore, the third channel information can be used to determine the precoding information between the first communication device and the second communication device, so as to obtain more accurate and / or more precise precoding information through the path information of the subpath (i.e., high-precision path information), thereby improving the performance of subsequent data transmission based on the precoding information.

[0097] Optionally, the first channel information and the third channel information satisfy at least one of the following:

[0098] The time-domain resources corresponding to the first channel information are different from those corresponding to the third channel information.

[0099] The frequency domain resources corresponding to the first channel information and the frequency domain resources corresponding to the third channel information are different; or,

[0100] The spatial resources corresponding to the first channel information are different from those corresponding to the third channel information.

[0101] Based on the above scheme, the third channel information can be used for channel prediction based on the measured first channel information, including but not limited to prediction in the time domain, frequency domain, and spatial domain, and improve the performance of channel prediction.

[0102] In one possible implementation of the second aspect, the i-th first path information among the N first path information includes at least one of the following:

[0103] The sixth indication information indicates the number of sub-paths corresponding to (or contained in) the i-th path of the N paths;

[0104] The seventh indication information indicates at least one of the following: time delay, angle, power, or phase of the sub-path corresponding to (or included in) the i-th path of the N paths; or

[0105] The eighth indication information indicates the correlation between the channel information corresponding to the i-th first path information and the first channel information.

[0106] Based on the above scheme, the second multipath information may include N first path information, and each of the N first path information may include at least one of the above, that is, the path information of each sub-path obtained by the first communication device may include at least one of the above.

[0107] In one possible implementation of the second aspect, the method further includes: the second communication device receiving second information indicating the second multipath information.

[0108] Based on the above scheme, the second communication device can also receive second information indicating the second multipath information, so that the second communication device can obtain the second multipath information. Subsequently, the second communication device can determine the precoding information based on the second multipath information to improve data transmission performance.

[0109] In one possible implementation of the second aspect, the method further includes: the second communication device sending third information indicating resources of a second reference signal; the second reference signal being used to determine fourth channel information between the first communication device and the second communication device; wherein the channel dimension corresponding to the fourth channel information is greater than the channel dimension corresponding to the first channel information; wherein the fourth channel information is used to update the second multipath information to obtain updated second multipath information.

[0110] Based on the above scheme, the second communication device can also send resources indicating the second reference signal to the first communication device, so that the first communication device can update the second multipath information based on the fourth channel information corresponding to the second reference signal, so as to obtain more accurate second path information.

[0111] Furthermore, the aforementioned second reference signal can be a performance monitoring reference signal. The channel dimension corresponding to the fourth channel information determined by the second reference signal is greater than the channel dimension corresponding to the first channel information. That is, the pilot density of the former is greater than the pilot density of the latter. More accurate updated second path information can be obtained through channel information with a larger channel dimension. Subsequently, the data transmission performance can be improved through the precoding information corresponding to the updated second path information.

[0112] In one possible implementation of the second aspect, the method further includes: the second communication device receiving fourth information indicating the updated second multipath information.

[0113] Based on the above scheme, the second communication device can also receive second information, enabling the second communication device to obtain updated second multipath information and improve data transmission performance based on the precoding information corresponding to the updated second path information.

[0114] In one possible implementation of the second aspect, the method further includes: the second communication device receiving or transmitting fifth information indicating sub-path map information, the sub-path map information indicating sub-path information between the second communication device and communication devices at one or more locations.

[0115] Based on the above scheme, the second communication device can also receive or send fifth information, so that the recipient of the fifth information can obtain sub-path map information and subsequently communicate based on the sub-path information indicated by the sub-path map information, thereby improving communication performance.

[0116] In one possible implementation of the second aspect, the method further includes: the second communication device receiving or sending sixth information, the sixth information being used to update the number of sub-paths corresponding to (or included in) some or all of the N paths.

[0117] Based on the above scheme, the second communication device can also receive or send sixth information, so that the receiver of the sixth information can update the number of sub-paths based on the sixth information, and subsequently obtain more accurate updated second multipath information through the updated number of sub-paths, and subsequently improve data transmission performance through the precoding information corresponding to the updated second path information.

[0118] Optionally, the sixth piece of information includes at least one of the following:

[0119] The ninth instruction indicates that at least one new sub-path should be added to the j-th path among the N paths; or

[0120] The tenth instruction indicates that at least one sub-path should be deleted from the k-th path among the N paths;

[0121] Where j takes some or all of the values ​​from 1 to N, k takes some or all of the values ​​from 1 to N, and j is not equal to k.

[0122] A third aspect of this application provides a communication method applied to a second communication device, such as being executed by the second communication device, which may be a communication device (e.g., a terminal device or a network device), or the second communication device may be a component of the communication device (e.g., a circuit or chip responsible for communication functions (e.g., a modem chip, also known as a baseband chip, or a SoC chip or SIP chip containing a modem core, etc.), or the second communication device may also be a logic module or software capable of implementing all or part of the functions of the communication device.

[0123] In this method, a second communication device receives second information indicating second multipath information; wherein the second multipath information is related to first multipath information and first channel information between the first and second communication devices, for example, the second multipath information is determined based on the first multipath information and the first channel information, and the first channel information is related to the measurement result of a first reference signal, for example, the first channel information is determined based on the measurement result of the first reference signal; the first multipath information indicates path information of N paths between the first and second communication devices, where N is a positive integer; the second multipath information includes N first path information, the N first path information includes the i-th first path information, the N paths include the i-th path, and the i-th first path information is used to indicate the path information of each sub-path in one or more sub-paths included in the i-th path, where i takes the value from 1 to N.

[0124] Based on the above scheme, the second information received by the second communication device indicates second multipath information. This second multipath information includes N first path information, and each of the N first path information indicates the path information of one or more sub-paths contained in one of the N paths. Compared to the first multipath information indicating the path information of the N paths, the second multipath information can indicate the path information of one or more sub-paths contained in each of the N paths. In this way, the first communication device obtains the path information of the sub-paths contained in each path based on the first multipath information and the measured first channel information, which can improve the accuracy of the acquired multipath information and thus improve the performance of multipath prediction.

[0125] In the third aspect, the implementation behavior of the second communication device can also refer to the second aspect above and related descriptions, including but not limited to the process in which the second communication device can send first information, send channel configuration information, send third information, receive fourth information, receive or send fifth information, and receive or send sixth information, and achieve the corresponding technical effects.

[0126] The fourth aspect of this application provides a communication method applied to a second communication device, such as being executed by the second communication device, which may be a communication device (e.g., a terminal device or a network device), or the second communication device may be a component of the communication device (e.g., a circuit or chip responsible for communication functions (e.g., a modem chip, also known as a baseband chip, or a SoC chip or SIP chip containing a modem core, etc.), or the second communication device may also be a logic module or software capable of implementing all or part of the functions of the communication device.

[0127] In this method, a second communication device determines third information; the second communication device transmits the third information; the third information indicates resources of a second reference signal, which is used to determine fourth channel information between the first and second communication devices; wherein the channel dimension corresponding to the fourth channel information is greater than the channel dimension corresponding to the first channel information between the first and second communication devices, the first channel information is related to the measurement result of the first reference signal, for example, the first channel information is determined based on the measurement result of the first reference signal, and the fourth channel information is used to update the second multipath information to obtain the updated information. The second multipath information; wherein the second multipath information is related to the first multipath information and the first channel information, for example, the second multipath information is determined based on the first multipath information and the first channel information; the first multipath information indicates the path information of N paths between the first communication device and the second communication device, where N is a positive integer; the second multipath information includes N first path information, the N first path information includes the i-th first path information, the N paths include the i-th path, and the i-th first path information is used to indicate the path information of each sub-path in one or more sub-paths included in the i-th path, where i takes the value from 1 to N.

[0128] Based on the above scheme, the third information sent by the second communication device is used to indicate the resources of the second reference signal, and the second reference signal is used to determine the fourth channel information between the first and second communication devices. This fourth channel information is used to update the second multipath information. The second multipath information includes N first path information entries, and each of the N first path information entries indicates the path information of one or more sub-paths contained in one of the N paths. Compared to the first multipath information indicating the path information of the N paths, the second multipath information can indicate the path information of one or more sub-paths contained in each of the N paths. In this way, the first communication device obtains the path information of the sub-paths contained in each path based on the first multipath information and the measured first channel information, which can improve the accuracy of the acquired multipath information and thus improve the performance of multipath prediction.

[0129] Furthermore, the aforementioned second reference signal can be a performance monitoring reference signal. The channel dimension corresponding to the fourth channel information determined by the second reference signal is greater than the channel dimension corresponding to the first channel information. That is, the pilot density of the former is greater than the pilot density of the latter. More accurate updated second path information can be obtained through channel information with a larger channel dimension. Subsequently, the data transmission performance can be improved through the precoding information corresponding to the updated second path information.

[0130] In the fourth aspect, the implementation behavior of the second communication device can also refer to the second aspect above and related descriptions, including but not limited to the process in which the second communication device can send first information, send channel configuration information, receive second information, receive fourth information, receive or send fifth information, and receive or send sixth information, and achieve the corresponding technical effects.

[0131] A fifth aspect of this application provides a communication device, which includes a processing unit. The processing unit is configured to acquire first multipath information, which indicates path information of N paths between a first communication device and a second communication device, where N is a positive integer. The processing unit is further configured to acquire first channel information between the first communication device and the second communication device, which is related to the measurement result of a first reference signal, for example, the first channel information is determined based on the measurement result of the first reference signal. The processing unit is further configured to determine second multipath information, for example, the second multipath information is determined based on the first multipath information and the first channel information. The second multipath information includes N first path information, which includes an i-th first path information. The N paths include the i-th path, and the i-th first path information is used to indicate the path information of each of one or more sub-paths included in the i-th path, where i takes the value from 1 to N.

[0132] In the fifth aspect of this application, the constituent modules of the communication device can also be used to perform the steps executed in various possible implementations of the first aspect and achieve the corresponding technical effects. For details, please refer to the first aspect, which will not be repeated here.

[0133] A sixth aspect of this application provides a communication device, comprising a transceiver unit and a processing unit; the processing unit is configured to determine first information, the first information indicating configuration information corresponding to second multipath information; wherein the configuration information is at least configured to configure the number of sub-paths corresponding to (or including) some or all of the N paths between a first communication device and a second communication device; the transceiver unit is configured to transmit the first information; wherein the second multipath information is related to the first multipath information and a first channel information between the first communication device and the second communication device, for example, the second multipath information is based on... The first multipath information and the first channel information are determined by the first multipath information and the first channel information. The first channel information is related to the measurement result of the first reference signal. For example, the first channel information is determined based on the measurement result of the first reference signal. The first multipath information indicates the path information of the N paths, where N is a positive integer. The second multipath information includes N first path information, which includes the i-th first path information. The N paths include the i-th path. The i-th first path information is used to indicate the path information of each sub-path in one or more sub-paths included in the i-th path. The value of i is from 1 to N.

[0134] In the sixth aspect of this application, the constituent modules of the communication device can also be used to perform the steps executed in various possible implementations of the second aspect and achieve the corresponding technical effects. For details, please refer to the second aspect, which will not be repeated here.

[0135] A seventh aspect of this application provides a communication device including a transceiver unit; the transceiver unit is configured to receive second information indicating second multipath information; wherein the second multipath information is related to first multipath information and first channel information between a first communication device and a second communication device, for example, the second multipath information is determined based on the first multipath information and the first channel information, and the first channel information is related to the measurement result of a first reference signal, for example, the first channel information is determined based on the measurement result of the first reference signal; the first multipath information indicates path information of N paths between the first communication device and the second communication device, where N is a positive integer; the second multipath information includes N first path information, the N first path information includes an i-th first path information, the N paths include an i-th path, and the i-th first path information is used to indicate the path information of each of one or more sub-paths included in the i-th path, where i takes a value from 1 to N.

[0136] In the seventh aspect of this application, the constituent modules of the communication device can also be used to perform the steps executed in various possible implementations of the third aspect and achieve the corresponding technical effects. For details, please refer to the third aspect, which will not be repeated here.

[0137] An eighth aspect of this application provides a communication apparatus, comprising a transceiver unit and a processing unit; the processing unit is configured to determine third information; the transceiver unit is configured to transmit the third information; the third information indicates resources of a second reference signal, the second reference signal being used to determine fourth channel information between a first communication device and a second communication device; wherein the channel dimension corresponding to the fourth channel information is greater than the channel dimension corresponding to the first channel information between the first communication device and the second communication device, the first channel information is related to the measurement result of the first reference signal, for example, the first channel information is determined based on the measurement result of the first reference signal, and the fourth channel information is used for more... The new second multipath information is obtained, resulting in updated second multipath information. This second multipath information is related to the first multipath information and the first channel information; for example, the second multipath information is determined based on the first multipath information and the first channel information. The first multipath information indicates the path information of N paths between the first communication device and the second communication device, where N is a positive integer. The second multipath information includes N first path information, including the i-th first path information. The N paths include the i-th path, and the i-th first path information is used to indicate the path information of each sub-path among one or more sub-paths contained in the i-th path, where i takes values ​​from 1 to N.

[0138] In the eighth aspect of this application, the constituent modules of the communication device can also be used to perform the steps executed in various possible implementations of the fourth aspect and achieve the corresponding technical effects. For details, please refer to the fourth aspect, which will not be repeated here.

[0139] The ninth aspect of this application provides a communication device including at least one processor for executing computer programs or instructions to enable the device to implement the method described in any one of the first to fourth aspects and any possible implementation thereof.

[0140] Optionally, the at least one memory is coupled to a memory used to store computer programs or instructions.

[0141] Optionally, the communication device includes the memory.

[0142] The tenth aspect of this application provides a communication device including at least one logic circuit and an input / output interface; the logic circuit is used to perform the method described in any of the possible implementations of the first to fourth aspects described above.

[0143] The eleventh aspect of this application provides a communication system, which includes the first communication device and the second communication device described above.

[0144] The twelfth aspect of this application provides a computer-readable storage medium for storing one or more computer-executable instructions, which, when executed by a processor, perform the method as described in any possible implementation of any of the first to fourth aspects described above.

[0145] The thirteenth aspect of this application provides a computer program product (or computer program) that, when executed by a processor, performs the method described in any possible implementation of any of the first to fourth aspects described above.

[0146] The fourteenth aspect of this application provides a chip or chip system including at least one processor for supporting a communication device in implementing the methods described in any possible implementation of any of the first to fourth aspects. For example, the chip may be a baseband chip, a modem chip, a system-on-a-chip (SoC) chip containing a modem core, a system-in-package (SIP) chip, or a communication module, etc.

[0147] In one possible design, the chip or chip system may further include a memory for storing program instructions and data necessary for the communication device. The chip system may be composed of chips or may include chips and other discrete devices. Optionally, the chip system may also include interface circuitry that provides program instructions and / or data to the at least one processor.

[0148] The technical effects of any of the design methods in aspects five through fourteen can be found in the technical effects of the different design methods in aspects one through four above, and will not be repeated here. Attached Figure Description

[0149] Figures 1a to 1c are schematic diagrams of the communication system provided in this application;

[0150] Figures 2a to 2h are schematic diagrams of the AI ​​processing involved in this application;

[0151] Figure 3 is an interactive schematic diagram of the communication method provided in this application;

[0152] Figures 4a to 4c are some schematic diagrams of the model processing results provided in this application;

[0153] Figures 5 to 9 are schematic diagrams of the communication device provided in this application. Detailed Implementation

[0154] First, some terms used in the embodiments of this application will be explained to facilitate understanding by those skilled in the art.

[0155] (1) Terminal device: can be a wireless terminal device that can receive network device scheduling and instruction information. The wireless terminal device can be a device that provides voice and / or data connectivity to the user, or a handheld device with wireless connection function, or other processing device connected to a wireless modem.

[0156] Terminal devices can communicate with one or more core networks or the Internet via a radio access network (RAN). Terminal devices can be mobile terminal devices, such as mobile phones (or "cellular" phones), computers, and data cards. For example, they can be portable, pocket-sized, handheld, computer-embedded, or vehicle-mounted mobile devices that exchange voice and / or data with the RAN. Examples include personal communication service (PCS) phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs), tablets, and computers with wireless transceiver capabilities. Wireless terminal equipment can also be referred to as a system, subscriber unit, subscriber station, mobile station (MS), remote station, access point (AP), remote terminal, access terminal, user terminal, user agent, subscriber station (SS), customer premises equipment (CPE), terminal, user equipment (UE), mobile terminal (MT), etc.

[0157] By way of example and not limitation, in this embodiment, the terminal device can also be a wearable device. Wearable devices, also known as wearable smart devices or smart wearable devices, are a general term for devices that utilize wearable technology to intelligently design and develop everyday wearables, such as glasses, gloves, watches, clothing, and shoes. Wearable devices are portable devices that are worn directly on the body or integrated into the user's clothing or accessories. Wearable devices are not merely hardware devices, but also achieve powerful functions through software support, data interaction, and cloud interaction. Broadly speaking, wearable smart devices include those that are feature-rich, large in size, and can achieve complete or partial functions without relying on a smartphone, such as smartwatches or smart glasses, as well as those that focus on a specific type of application function and require the use of other devices such as smartphones, such as various smart bracelets, smart helmets, and smart jewelry for vital sign monitoring.

[0158] Terminals can also be drones, robots, devices in device-to-device (D2D) communication, vehicles to everything (V2X) communication, virtual reality (VR) terminal devices, augmented reality (AR) terminal devices, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in telemedicine or telehealth services, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, etc.

[0159] Furthermore, the terminal device can also be a terminal device for a communication system evolved from the fifth generation (5G) communication system (such as 5G Advanced or future communication systems). For example, the form and function of the communication terminal can be further expanded, including but not limited to vehicles, cellular network terminals (integrating satellite terminal functions), drones, and Internet of Things (IoT) devices.

[0160] In this embodiment, the terminal device can also obtain artificial intelligence (AI) services provided by the network device. Optionally, the terminal device can also have AI processing capabilities.

[0161] (2) Network equipment: This can be equipment within a wireless network, such as RAN nodes (or devices) that connect terminal devices to the wireless network. Examples of RAN equipment currently include: base stations, evolved NodeBs (eNodeBs), gNBs (gNodeBs) in 5G communication systems, transmission reception points (TRPs), evolved Node Bs (eNBs), radio network controllers (RNCs), Node Bs (NBs), home base stations (e.g., home evolved Node Bs, or home Node Bs (HNBs), base band units (BBUs), or wireless fidelity (Wi-Fi) access points (APs). Additionally, in a network architecture, network equipment may include central unit (CU) nodes, distributed unit (DU) nodes, or RAN equipment comprising both CU and DU nodes.

[0162] Optionally, RAN nodes can also be macro base stations, micro base stations, indoor stations, relay nodes, donor nodes, or radio controllers in cloud radio access network (CRAN) scenarios. RAN nodes can also be servers, wearable devices, vehicles, or in-vehicle equipment. For example, the access network equipment in V2X technology can be a roadside unit (RSU).

[0163] In another possible scenario, multiple RAN nodes collaborate to assist the terminal in achieving wireless access, with different RAN nodes each implementing some of the base station's functions. For example, RAN nodes can be CUs, DUs, CUs (control plane, CP), CUs (user plane, UP), or radio units (RUs). CUs and DUs can be configured separately or included in the same network element, such as a baseband unit (BBU). RUs can be included in radio equipment or radio units, such as remote radio units (RRUs), active antenna units (AAUs), radio heads (RHs), or remote radio heads (RRHs).

[0164] In different systems, CU (or CU-CP and CU-UP), DU, or RU may have different names, but those skilled in the art will understand their meaning. For example, in an open access network (open RAN, O-RAN, or ORAN) system, CU can also be called O-CU (open CU), DU can also be called O-DU, CU-CP can also be called O-CU-CP, CU-UP can also be called O-CU-UP, and RU can also be called O-RU. For ease of description, this application uses CU, CU-CP, CU-UP, DU, and RU as examples. Any of the units among CU (or CU-CP, CU-UP), DU, and RU in this application can be implemented through software modules, hardware modules, or a combination of software modules and hardware modules.

[0165] Communication between access network devices and terminal devices follows a specific protocol layer structure. This protocol layer may include a control plane protocol layer and a user plane protocol layer. The control plane protocol layer may include at least one of the following: radio resource control (RRC) layer, packet data convergence protocol (PDCP) layer, radio link control (RLC) layer, media access control (MAC) layer, or physical (PHY) layer, etc. The user plane protocol layer may include at least one of the following: service data adaptation protocol (SDAP) layer, PDCP layer, RLC layer, MAC layer, or physical layer, etc.

[0166] The correspondence between network elements and their achievable protocol layer functions in the ORAN system can be found in Table 1 below.

[0167] Table 1

[0168] Network devices can be other devices that provide wireless communication functions for terminal devices. The embodiments of this application do not limit the specific technology or form of the network device. For ease of description, the embodiments of this application are not limited.

[0169] Network equipment may also include core network equipment, such as the Mobility Management Entity (MME), Home Subscriber Server (HSS), Serving Gateway (S-GW), Policy and Charging Rules Function (PCRF), and Public Data Network Gateway (PDN gateway or P-GW) in 4th generation (4G) networks; and access and mobility management function (AMF), user plane function (UPF), or session management function (SMF) in 5G networks. Furthermore, this core network equipment may also include other core network equipment in 5G networks and future networks.

[0170] In this embodiment of the application, the network device may also have network nodes with AI capabilities, which can provide AI services to terminals or other network devices. For example, it may be an AI node, computing node, RAN node with AI capabilities, or core network element with AI capabilities on the network side (access network or core network).

[0171] In this application embodiment, the device for implementing the function of the network device can be the network device itself, or it can be a device capable of supporting the network device in implementing the function, such as a chip system. This device can be disposed within the network device. In the technical solutions provided in this application embodiment, the example of a network device being used to implement the function of the network device is used to describe the technical solutions provided in this application embodiment.

[0172] (3) Configuration and Pre-configuration: In this application, both configuration and pre-configuration are used. Configuration refers to the network device / server sending configuration information or parameter values ​​to the terminal via messages or signaling, so that the terminal can determine communication parameters or resources for transmission based on these values ​​or information. Pre-configuration is similar to configuration; it can be parameter information or parameter values ​​pre-negotiated between the network device / server and the terminal device, parameter information or parameter values ​​specified by standard protocols for use by the base station / network device or terminal device, or parameter information or parameter values ​​pre-stored in the base station / server or terminal device. This application does not limit this.

[0173] Furthermore, these values ​​and parameters can be changed or updated.

[0174] (4) The terms "system" and "network" in the embodiments of this application can be used interchangeably. "Multiple" refers to two or more. "And / or" describes the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist simultaneously, or B exists alone, where A and B can be singular or plural. The character " / " generally indicates that the related objects before and after are in an "or" relationship. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, "at least one of A, B and C" includes A, B, C, AB, AC, BC or ABC. And, unless otherwise specified, the ordinal numbers such as "first" and "second" mentioned in the embodiments of this application are used to distinguish multiple objects and are not used to limit the order, sequence, priority or importance of multiple objects.

[0175] (5) In the embodiments of this application, "send" and "receive" indicate the direction of signal transmission. For example, "send information to XX" can be understood as the destination of the information being XX, which may include sending directly through the air interface or sending indirectly through the air interface by other units or modules. "Receive information from YY" can be understood as the source of the information being YY, which may include receiving directly from YY through the air interface or receiving indirectly from YY through the air interface by other units or modules. "Send" can also be understood as the "output" of the chip interface, and "receive" can also be understood as the "input" of the chip interface.

[0176] In the embodiments of this application, sending and receiving can be performed between devices, such as between a network device and a terminal device, or they can be performed within a device, such as between components, modules, chips, software modules, or hardware modules within the device via a bus, wiring, or interface.

[0177] Optionally, the information may undergo necessary processing, such as encoding or modulation, between the source and destination, but the destination can still understand the valid information from the source. Similar statements in this application can be understood in a similar way and will not be elaborated further.

[0178] (6) In the embodiments of this application, "instruction" may include direct instruction and indirect instruction, as well as explicit instruction and implicit instruction. The information indicated by a certain piece of information (as described below, the instruction information) is called the information to be instructed. In the specific implementation process, there are many ways to indicate the information to be instructed, such as, but not limited to, directly indicating the information to be instructed, such as the information to be instructed itself or its index. It can also indirectly indicate the information to be instructed by indicating other information, where there is an association between the other information and the information to be instructed; or it can only indicate a part of the information to be instructed, while the other parts of the information to be instructed are known or pre-agreed upon. For example, the instruction of specific information can be achieved by using a pre-agreed (e.g., protocol predefined) arrangement order of various information, thereby reducing the instruction overhead to a certain extent. This application does not limit the specific method of instruction. Optionally, for the sender of the instruction information, the instruction information can be used to indicate the information to be instructed; for the receiver of the instruction information, the instruction information can be used to determine the information to be instructed.

[0179] In this application, unless otherwise specified, the same or similar parts between the various embodiments can be referred to each other. In the various embodiments of this application, and the various methods / designs / implementations within each embodiment, unless otherwise specified or logically conflicting, the terminology and / or descriptions between different embodiments and between the various methods / designs / implementations within each embodiment are consistent and can be mutually referenced. The technical features in different embodiments and the various methods / designs / implementations within each embodiment can be combined to form new embodiments, methods, or implementations based on their inherent logical relationships. The following descriptions of the embodiments of this application do not constitute a limitation on the scope of protection of this application.

[0180] This application can be applied to long-term evolution (LTE) systems, new radio (NR) systems, or future communication systems beyond 5G. These communication systems include at least one network device and / or at least one terminal device.

[0181] Please refer to Figure 1a, which is a schematic diagram of the architecture of the communication system 1000 used in the embodiments of this application. As shown in Figure 1a, the communication system may include a Radio Access Network (RAN) 100. Optionally, the communication system 1000 may also include a core network 200 and an Internet 300. The RAN 100 includes at least one RAN node (110a and 110b in Figure 1a, collectively referred to as 110) and at least one terminal (120a-120j in Figure 1a, collectively referred to as 120). The RAN 100 may also include other RAN nodes, such as wireless relay devices and / or wireless backhaul devices (not shown in Figure 1a). The terminal 120 is wirelessly connected to the RAN node 110, and the RAN node 110 is wirelessly or wired connected to the core network 200. The core network equipment in the core network 200 and the RAN node 110 in the RAN 100 may be independent and different physical devices, or they may be the same physical device integrating the logical functions of the core network equipment and the logical functions of the RAN node. Terminals can be connected to each other, as can RAN nodes, via wired or wireless means.

[0182] Taking the communication system shown in Figure 1a as an example, in addition to performing communication-related services, different devices (including network devices and network devices, network devices and terminal devices, and / or terminal devices and terminal devices) may also perform AI-related services.

[0183] As shown in Figure 1b, taking a network device as a base station as an example, the base station can perform communication-related services and AI-related services with one or more terminal devices, and different terminal devices can also perform communication-related services and AI-related services.

[0184] As shown in Figure 1c, taking terminal devices including televisions and mobile phones as an example, televisions and mobile phones can also perform communication-related services and AI-related services.

[0185] The technical solutions provided in this application can be applied to wireless communication systems (such as the systems shown in Figures 1a, 1b, or 1c). For example, AI network elements can be introduced into the communication system provided in this application to realize some or all AI-related operations. AI network elements can also be called AI nodes, AI devices, AI entities, AI modules, AI models, or AI units, etc. The AI ​​network element can be built into a network element within the communication system. For example, the AI ​​network element can be an AI module built into: access network equipment, core network equipment, cloud server, or operation, administration, and maintenance (OAM) to realize AI-related functions. The OAM can act as the network management system for the core network equipment and / or the access network equipment. Alternatively, the AI ​​network element can also be an independently set network element in the communication system. Optionally, the terminal or its built-in chip can also include an AI entity to realize AI-related functions.

[0186] The following is a brief introduction to the concepts that may be involved in this application.

[0187] AI can endow machines with human-like intelligence, for example, allowing them to use computer hardware and software to simulate certain intelligent human behaviors. To achieve artificial intelligence, machine learning methods can be employed. In machine learning, machines learn (or train) a model using training data. This model represents the mapping between inputs and outputs. The learned model can be used for reasoning (or prediction), that is, it can be used to predict the output corresponding to a given input. This output can also be called the reasoning result (or prediction result).

[0188] Machine learning can include supervised learning, unsupervised learning, and reinforcement learning. Unsupervised learning can also be called learning without supervision.

[0189] Supervised learning, based on collected sample values ​​and labels, uses machine learning algorithms to learn the mapping relationship between sample values ​​and labels, and then expresses this learned mapping relationship using an AI model. The process of training the machine learning model is the process of learning this mapping relationship. During training, sample values ​​are input into the model to obtain the model's predicted values, and the model parameters are optimized by calculating the error between the model's predicted values ​​and the sample labels (ideal values). After the mapping relationship is learned, it can be used to predict new sample labels. The mapping relationship learned in supervised learning can include linear or non-linear mappings. Based on the type of label, the learning task can be divided into classification tasks and regression tasks.

[0190] Unsupervised learning relies on collected sample values ​​to discover inherent patterns within the samples themselves. One type of unsupervised learning algorithm uses the samples themselves as supervisory signals, meaning the model learns the mapping relationship from sample to sample; this is called self-supervised learning. During training, model parameters are optimized by calculating the error between the model's predictions and the samples themselves. Self-supervised learning can be used for signal compression and decompression recovery applications; common algorithms include autoencoders and generative adversarial networks.

[0191] Reinforcement learning, unlike supervised learning, is a type of algorithm that learns problem-solving strategies through interaction with the environment. Unlike supervised and unsupervised learning, reinforcement learning problems do not have explicit "correct" action labels. The algorithm needs to interact with the environment to obtain reward signals from the environment, and then adjust its decision actions to obtain a larger reward signal value. For example, in downlink power control, the reinforcement learning model adjusts the downlink transmission power of each user based on the total system throughput feedback from the wireless network, aiming to achieve a higher system throughput. The goal of reinforcement learning is also to learn the mapping relationship between the environment state and a better (e.g., optimal) decision action. However, because the label of the "correct action" cannot be obtained in advance, the network cannot be optimized by calculating the error between the action and the "correct action." Reinforcement learning training is achieved through iterative interaction with the environment.

[0192] Neural networks (NNs) are a specific model in machine learning techniques. According to the general approximation theorem, neural networks can theoretically approximate any continuous function, thus enabling them to learn arbitrary mappings. Traditional communication systems rely on extensive expert knowledge to design communication modules, while deep learning communication systems based on neural networks can automatically discover hidden pattern structures from large datasets, establish mapping relationships between data, and achieve performance superior to traditional modeling methods.

[0193] The idea behind neural networks comes from the neuronal structure of the brain. For example, each neuron performs a weighted summation of its input values ​​and outputs the result through an activation function.

[0194] Figure 2a shows a schematic diagram of a neuron structure. Assume the input to the neuron is x = [x0, x1, ..., x...]. n The weights corresponding to each input are w = [w0, w1, ..., w], respectively. n ], where n is a positive integer, w i and x i It can be any possible type, such as a decimal, an integer (e.g., 0, a positive integer, or a negative integer), or a complex number. i As x i The weights are used to assign weights to x. iWeighting is applied. The bias for the weighted sum of the input values ​​is, for example, b. Activation functions can take many forms. Suppose the activation function of a neuron is: y = f(z) = max(0, z), then the output of that neuron is: For example, if the activation function of a neuron is y = f(z) = z, then the output of that neuron is: Here, b can be any possible type, such as a decimal, an integer (e.g., 0, a positive integer, or a negative integer), or a complex number. The activation functions of different neurons in a neural network can be the same or different.

[0195] Furthermore, neural networks generally consist of multiple layers, each of which may include one or more neurons. Increasing the depth and / or width of a neural network can improve its expressive power, providing more powerful information extraction and abstract modeling capabilities for complex systems. The depth of a neural network can refer to the number of layers it includes, and the number of neurons in each layer can be called the width of that layer. In one implementation, a neural network includes an input layer and an output layer. The input layer processes the received input information through neurons and passes the processing result to the output layer, which then obtains the output of the neural network. In another implementation, a neural network includes an input layer, hidden layers, and an output layer. The input layer processes the received input information through neurons and passes the processing result to the hidden layer. The hidden layer calculates the received processing result and passes the calculation result to the output layer or the next adjacent hidden layer, ultimately obtaining the output of the neural network. A neural network may include one hidden layer or multiple sequentially connected hidden layers, without limitation.

[0196] Neural networks, for example, are deep neural networks (DNNs). Depending on how the network is constructed, DNNs can include feedforward neural networks (FNNs), convolutional neural networks (CNNs), and recurrent neural networks (RNNs).

[0197] Figure 2b is a schematic diagram of an FNN network. A characteristic of FNN networks is that neurons in adjacent layers are completely connected pairwise. This characteristic makes FNNs typically require a large amount of storage space, leading to high computational complexity.

[0198] CNNs are neural networks specifically designed to process data with a grid-like structure. For example, time-series data (e.g., discrete sampling along a time axis) and image data (e.g., two-dimensional discrete sampling) can both be considered grid-like data. CNNs do not use all the input information at once for computation; instead, they use a fixed-size window to extract a portion of the information for convolution operations, which significantly reduces the computational cost of model parameters. Furthermore, depending on the type of information extracted by the window (e.g., people and objects in an image represent different types of information), each window can use different convolution kernels, allowing CNNs to better extract features from the input data.

[0199] Recurrent Neural Networks (RNNs) are a type of neural network that utilizes feedback time-series information. The input to an RNN includes the current input value and its own output value from the previous time step. RNNs are suitable for acquiring temporally correlated sequence features, and are applicable to applications such as speech recognition and channel coding / decoding.

[0200] In the model training process described above, a loss function can be defined. The loss function describes the difference between the model's output value and the ideal target value. The loss function can be expressed in various forms, and there are no restrictions on its specific form. The model training process can be viewed as follows: by adjusting some or all of the model's parameters, the value of the loss function is made to be less than a threshold or to meet the target requirement.

[0201] A model can also be called an AI model, a rule, or other names. An AI model can be considered a specific method for implementing AI functions. An AI model represents the mapping relationship or function between the model's input and output. AI functions can include one or more of the following: data collection, model training (or model learning), model information dissemination, model inference (or model reasoning, inference, or prediction, etc.), model monitoring or model validation, or inference result publication, etc. AI functions can also be called AI (related) operations or AI-related functions.

[0202] The implementation process of the neural network will be described below with reference to the accompanying drawings.

[0203] Taking a fully connected neural network as an example, a fully connected neural network is also called a multilayer perceptron (MLP).

[0204] As shown in Figure 2c, an MLP consists of an input layer (left side), an output layer (right side), and multiple hidden layers (middle). Each layer of an MLP contains several nodes, called neurons. Neurons in adjacent layers are connected pairwise.

[0205] Optionally, considering neurons in two adjacent layers, the output h of the next layer's neurons is the weighted sum of all neurons x in the previous layer connected to it, processed by an activation function, and can be expressed as: h = f(wx + b).

[0206] Where w is the weight matrix, b is the bias vector, and f is the activation function.

[0207] Alternatively, the output of the neural network can be recursively expressed as: y = f z (w z f z-1 (…)+b z ).

[0208] Where z is the index of the neural network layer, z is greater than or equal to 1 and z is less than or equal to Z, where Z is the total number of layers in the neural network.

[0209] In other words, a neural network can be understood as a mapping from an input data set to an output data set. Neural networks are typically initialized randomly; the process of obtaining this mapping from random values ​​w and b using existing data is called training the neural network.

[0210] Optionally, the training method involves using a loss function to evaluate the output of the neural network.

[0211] As shown in Figure 2d, the error can be backpropagated, and the neural network parameters (including w and b) can be iteratively optimized using gradient descent until the output of the loss function reaches its minimum value, which is the "better point (e.g., the optimal point)" in Figure 2d. Optionally, the neural network parameters corresponding to the "better point (e.g., the optimal point)" in Figure 2d can be used as the neural network parameters in the trained AI model information.

[0212] Alternatively, the gradient descent process can be represented as:

[0213] Where θ represents the parameters to be optimized (including w and b), L is the loss function, and η is the learning rate, controlling the step size of gradient descent. This represents the differentiation operation. This indicates taking the derivative of θ with respect to L.

[0214] Alternatively, the backpropagation process can utilize the chain rule for partial derivatives.

[0215] As shown in Figure 2e, the gradient of the parameters in the previous layer can be recursively calculated from the gradient of the parameters in the next layer, and can be expressed as:

[0216] Among them, w ij Let s be the weight of the connection between node j and node i.i The weighted sum of the inputs at node i.

[0217] The technical solution provided in this application can be applied to communication systems (such as the systems shown in Figure 1a, Figure 1b, or Figure 1c). In a communication system, multipath propagation can refer to the signal reaching the receiver after the signal transmitter transmits the signal through two or more paths in the wireless propagation environment.

[0218] Generally, the reflection and diffraction of electromagnetic waves by objects in the environment leads to multipath propagation. Multipath signals traveling along different paths may have different multipath information (e.g., time delay, angle, or path loss, or one or more of these). Consequently, the signal received by the receiver can be a superposition of these multipath signals. Multipath delay spread can cause inter-symbol interference, and multipath cancellation can lead to signal fading. Although multipath causes these problems for communication systems, it also increases the number of spatial multiplexing streams in the communication system. Therefore, predicting multipath in the wireless propagation environment is crucial for improving the service capability of communication systems. Multipath prediction refers to predicting the possible multipath characteristics of a terminal communication device communicating with a base station at a certain spatial location, such as the number of paths, path strength, path angle, multipath delay spread, and multipath angular spread.

[0219] One possible method for multipath prediction is to model the real environment in a virtual physical world, replicating the size, position, and material of objects in the real world as closely as possible. Then, base stations and terminal devices are placed in the virtual physical world at the locations where multipath prediction is desired, and ray tracing is used to simulate the multipath between them. Alternatively, an AI neural network model can be used to process environmental information and obtain multipath component (MPC) information.

[0220] However, while MPC information is available, the predicted MPC using ray tracing or AI methods differs from the actual MPC propagating in the real physical environment. These differences may stem from imperfect environmental modeling, nonlinear effects in the hardware, and other factors. Therefore, the actual MPC propagating in a real communication environment remains unobtainable. Furthermore, the phase of each path in the actual MPC cannot be obtained through simulation because the phase changes with wavelength-level variations in the environment (the location of communication equipment and environmental information cannot be accurate to the wavelength level). Thus, the actual MPC and multipath phase in real-world scenarios cannot be obtained through simulation. In addition, while the actual MPC and multipath phase can be used to reconstruct communication channels, saving channel measurement overhead in large-scale MIMO systems, the accuracy of this channel reconstruction also impacts the performance of large-scale MIMO systems. Therefore, obtaining the actual MPC and multipath phase is of paramount importance.

[0221] Currently, taking the UE as the terminal device and the BS as the network device as an example, in order to obtain accurate precoding, the frequency division duplexing (FDD) system uses the downlink channel information measured by the UE to feed back to the BS. The BS then uses this channel information to obtain the precoding matrix. This process deals with the frequency domain channel, not multipath (time domain). The problem with feeding back the frequency domain channel over the air interface is that as the number of antennas in the MIMO system increases, the pilot overhead required for measuring the channel becomes increasingly large, leading to a higher proportion of communication resources being occupied by pilots, thus affecting the spectral efficiency of the communication system.

[0222] As an example, as shown in Figure 2f, the channel model currently used by 3GPP is the clustered delay line (CDL) channel model. The CDL channel model assumes that there are n (n is a positive integer) multipath clusters from the base station to the UE (the figure only shows the first cluster (denoted as cluster 1) and the nth cluster (denoted as cluster n)). Each cluster consists of multiple sub-paths. Optionally, each cluster contains multiple scattering points. Looking at a cluster individually, the wireless signal reaches the UE after being scattered by multiple scattering points within that cluster. The characteristics of each sub-path corresponding to a scattering point are related to the spatial location of the scattering point and the material and shape of that scattering point. Therefore, the characteristics of the cluster (scattering points) are relatively easy to predict, but the characteristics of the sub-paths (scattering points) within the cluster are more random. To describe the characteristics of a cluster, the cluster center can be used to describe the cluster.

[0223] For example, given the environment, BS, and UE location, the MPC can be predicted. This MPC can be viewed as a cluster center, meaning each path within the MPC is actually a cluster. For instance, if the MPC contains 10 paths, each path is a cluster, and assuming each cluster contains 20 sub-paths, then there should be a total of 200 sub-paths. However, due to imperfect environmental modeling and nonlinear hardware effects, current predictions can only reach the cluster center level, i.e., the MPC level. Small movements of the UE, changes in hardware status, or slight changes in the environment can all alter these sub-paths within a cluster.

[0224] As can be seen from the above process, the current implementation can only predict the MPC, treating these paths as cluster centers. However, the current implementation cannot predict the sub-paths near these clusters that can be used to reconstruct the current channel (hereinafter, sub-paths can also be called virtual paths, because the generation of these sub-paths is partly due to the actual physical environment (near the cluster center) and partly due to the nonlinearity of the hardware (the distribution near the cluster center cannot be predicted)).

[0225] As an example, as shown in Figure 2g, each circle represents a scattering point that generates a virtual path. From the pitch and azimuth angles of the virtual paths in the figure, it can be seen that there are a large number of virtual paths. However, these virtual paths overlap in the angular domain and are mainly concentrated in two clusters. The angles of the cluster centers of these two clusters can be predicted, but the distribution of these virtual paths is relatively random and difficult to predict.

[0226] As another example, as shown in Figure 2h, each circle represents a scattering point that generates a virtual path. From the delay and azimuth in the figure, it can be seen that the virtual paths are mainly concentrated within two clusters, but their specific distribution within the clusters is rather random. For example, the cluster center is approximately at zenith = 90 degrees and azimuth = 0 degrees. This cluster contains multiple virtual paths, and the azimuth angles of these virtual paths could be -1.2 degrees, -1.0 degrees, -0.3 degrees, 0.1 degrees, etc., with a relatively random distribution. Therefore, the parameters of the virtual paths are difficult to predict.

[0227] Therefore, determining the path information of virtual paths to improve the performance of multipath prediction is a technical problem that urgently needs to be solved.

[0228] To address the aforementioned problems, this application provides a communication method and related apparatus, which will be described in detail below with reference to the accompanying drawings.

[0229] Please refer to Figure 3, which is a schematic diagram of an implementation of the communication method provided in this application. The method includes the following steps.

[0230] It should be noted that, in the following text, Figure 3 uses the first communication device and other communication devices (such as the second communication device) as examples to illustrate the method in this interactive illustration, but this application does not limit the execution subject of this interactive illustration. For example, the communication device can be a communication device (such as a terminal device or a network device), or a chip, baseband chip, modem chip, SoC chip (such as an SoC chip containing a modem core), SIP chip, communication module, chip system, processor, logic module, or software in the communication device.

[0231] As an example, the first communication device can be a terminal device and the second communication device can be a network device.

[0232] As another example, the first communication device can be a network device, and the second communication device can be a terminal device.

[0233] As another example, both the first and second communication devices are network devices.

[0234] Optionally, the aforementioned network equipment may be access network equipment or ORAN equipment (including at least one of O-CU, O-DU, and O-RU).

[0235] As another example, both the first and second communication devices are terminal devices, meaning that the scheme shown in Figure 3 can be applied to side link communication scenarios.

[0236] S301. The first communication device acquires first multipath information. The first multipath information indicates path information for N paths between the first communication device and the second communication device, where N is a positive integer.

[0237] S302. The first communication device acquires first channel information between itself and the second communication device. The first channel information is related to the measurement result of the first reference signal.

[0238] S303. The first communication device determines second multipath information, which is related to the first multipath information and the first channel information, for example, the second multipath information is determined based on the first multipath information and the first channel information. The second multipath information includes N first path information, which includes the i-th first path information. The N paths include the i-th path, and the i-th first path information is used to indicate the path information of each sub-path among one or more sub-paths included in the i-th path, where i takes values ​​from 1 to N.

[0239] Optionally, a path may contain one or more sub-paths. For example, a first path may contain one or more paths, wherein the path information of the first path indicates the path information of the combination of one or more sub-paths, or the path information of the first path indicates the combined path formed by the one or more sub-paths.

[0240] For example, the i-th path among the N paths mentioned above can contain M. i (M i (where M is a positive integer) Sub-diameters, that is, the total number of sub-diameters contained in N diameters can be expressed as K (K = M1 + M2 + ... + M...). N The first multipath information can indicate the path information of each of the N paths, and each of the N paths contains one or more sub-paths from the K sub-paths; in other words, the first multipath information can indicate the path information of one or more sub-paths combined from the K sub-paths, and the second multipath information can indicate the path information of each of the K sub-paths.

[0241] Optionally, the aforementioned second multipath information is generated based on prediction / simulation of the first multipath information and the first channel information. The sub-path indicated by the second multipath information may not actually exist; therefore, the sub-path can be called a virtual path. For example, a path containing one or more sub-paths can be replaced by: a cluster center containing one or more virtual paths (i.e., the aforementioned sub-path can be a virtual path, and the aforementioned path can be a cluster center), or a joint path containing one or more paths (i.e., the aforementioned sub-path can be a path, and the aforementioned path can be a joint path).

[0242] Optionally, the first communication device may acquire the first channel information in a variety of ways.

[0243] For example, the first communication device may receive a first reference signal from the second communication device and determine the first channel information based on the measurement result of the first reference signal.

[0244] For example, the second communication device can receive a first reference signal from the first communication device, determine the first channel information based on the measurement result of the first reference signal, and send the first channel information to the first communication device.

[0245] For example, the second communication device can receive a first reference signal from the first communication device, perform a measurement based on the first reference signal to obtain a measurement result, and send the measurement result to the first communication device, and the first communication device determines the first channel information based on the measurement result.

[0246] Based on the scheme shown in Figure 3, the first multipath information acquired by the first communication device in step S301 is used to indicate the path information of N paths between the first and second communication devices. The first channel information acquired by the first communication device in step S302 is related to the measurement result of the first reference signal. Subsequently, in step S303, the second multipath information determined by the first communication device includes N first path information, and each of the N first path information is used to indicate the path information of one or more sub-paths contained in one of the N paths. Compared to the first multipath information indicating the path information of N paths, the second multipath information can indicate the path information of one or more sub-paths contained in each of the N paths. In this way, the first communication device obtains the path information of the sub-paths contained in each path based on the first multipath information and the measured first channel information, which can improve the accuracy of the acquired multipath information and thus improve the performance of multipath prediction.

[0247] In one possible implementation, in step S303, the process of the first communication device determining the second multipath information includes: the first communication device determining N second path information based on the first multipath information; wherein, the i-th second path information among the N second path information indicates the initial path information of each sub-path in the one or more sub-paths; the first communication device determining the second multipath information based on the second channel information corresponding to the N second path information and the first channel information.

[0248] In the process of determining the second multipath information, the first communication device can determine N second path information based on the first multipath information, and then determine the second multipath information based on the second channel information corresponding to the N second path information and the first channel information. The i-th second path information among the N second path information indicates the initial path information of each sub-path in the one or more sub-paths. Therefore, the first communication device can update the initial path information of each sub-path based on the measured first channel information to obtain second path information indicating the updated path information of each sub-path (for example, the first communication device can update the initial sub-path using the measured first channel information to obtain the second path information).

[0249] Optionally, the second channel information is obtained by processing the N second path information based on the first model. Thus, the first communication device can obtain the second channel information by processing the N second path information based on the first model, and quickly obtain the second channel information through the model processing process.

[0250] In one possible implementation, the method shown in Figure 3 further includes: the first communication device receiving channel configuration information, which indicates the channel configuration parameters of the first communication device and / or the channel configuration parameters of the second communication device; wherein the input of the first model includes the channel configuration information. Therefore, the input of the first model may also include the channel configuration information, enabling the first model to process the specified channel configuration information and N second path information to obtain second channel information, thereby improving the accuracy of the second channel information.

[0251] Optionally, the first communication device may obtain the channel configuration information in other ways, such as by pre-configuring or pre-defining the channel configuration information.

[0252] Optionally, the above channel configuration parameters include at least one of the following: number of antennas, number of ports, frequency point, or bandwidth.

[0253] Optionally, the above channel configuration information can be replaced with other terms, such as frequency domain channel information or frequency domain information.

[0254] As an example, as shown in Figure 4a, the first model can be used for time-frequency domain transformation (e.g., the first model can be a time-frequency domain transformation model). The input of the first model can include at least time-domain channel information (optionally, the input of the first model can also include the channel configuration information mentioned above), and the output of the first model can include frequency-domain channel information. For example, the time-domain channel information can indicate the channel impulse response (CIR), and multipath information (e.g., the N second path information mentioned above) can be an implementation example of CIR; the frequency-domain channel information can indicate the channel frequency response (CFR), and the second channel information can be an implementation example of CFR.

[0255] As an example, as shown in Figure 4b, during the process of the first communication device determining the second multipath information, the first communication device can obtain the second multipath information through processing by a second model. For example, the input of the second model may include the first multipath information and the first channel information, and the output of the second model may include the second multipath information.

[0256] Optionally, as shown in Figure 4c, the first model can be a sub-model of the second model, or the first model can be a part of the second model.

[0257] In Figure 4c, the input of the second model may include first multipath information and first channel information (optionally also including channel configuration information), and the output of the second model may include second multipath information.

[0258] In Figure 4c, the input of the initialization module includes first multipath information, and the output includes N second path information. Furthermore, the input of the initialization module may also include a loss parameter, which is used to iteratively process the N second path information to obtain the second multipath information.

[0259] In Figure 4c, the input of the first model includes N second path information (optionally also including channel configuration information), and the output includes second channel information; wherein, the LOSS parameters determined by the second channel information and the first channel information are used to initialize the iteration of the module.

[0260] Optionally, the number of iterations of the initialization module can be pre-configured or pre-defined, or the iteration end condition (or termination condition) of the initialization module can be determined by pre-configured or pre-defined condition parameters, or the iteration end condition (or termination condition) of the initialization module can be configured condition parameters (e.g., parameters indicated by the fifth instruction information below).

[0261] For example, in Figure 4c, the first communication device can be initialized based on N paths indicated by the input first multipath information, and the initialization result is N second path information, where the i-th second path information may contain M... i (M i (where M is a positive integer) sub-paths, and correspondingly, the number of sub-paths represented by N second path information can be M1 + M2 + ... + M N After that, the N second path information is input into the first model to obtain the reconstructed channel (i.e., the second channel information). Then, the LOSS parameter is calculated using the second channel information and the first channel information. Based on the gradient information determined by the LOSS parameter, the initialized sub-path parameter is updated through gradient backpropagation and gradient descent. This process is repeated once or multiple times. After the iteration is completed, the second multipath information is obtained.

[0262] Optionally, the model involved in this application (such as the first model or the second model) can be implemented in a variety of ways, such as a mathematical model, an artificial intelligence (AI) model, a neural network model, an AI neural network model, a machine learning model, or an AI processing model.

[0263] In one possible implementation, the second multipath information determined by the first communication device in step S303 is used to determine third channel information between the first and second communication devices. This third channel information is used to determine precoding information between the first and second communication devices. Thus, the second multipath information, which indicates the path information of each sub-path, can be used to determine the third channel information, and this third channel information can be used to determine the precoding information between the first and second communication devices. This allows for obtaining more accurate and / or precise precoding information through the sub-path path information (i.e., high-precision path information), thereby improving the performance of subsequent data transmission based on this precoding information.

[0264] Optionally, the first channel information and the third channel information satisfy at least one of the following:

[0265] The time-domain resources corresponding to the first channel information are different from those corresponding to the third channel information.

[0266] The frequency domain resources corresponding to the first channel information and the frequency domain resources corresponding to the third channel information are different; or,

[0267] The spatial resources corresponding to the first channel information are different from those corresponding to the third channel information.

[0268] Therefore, the third channel information can be used for channel prediction based on the measured first channel information, including but not limited to prediction in the time domain, frequency domain, and spatial domain, and improve the performance of channel prediction.

[0269] In one possible implementation, the method shown in Figure 3 further includes:

[0270] S300. The second communication device sends first information, and correspondingly, the first communication device receives the first information. The first information indicates the configuration information corresponding to the second multipath information.

[0271] Therefore, the first communication device can also receive the first information and obtain the configuration information corresponding to the second multipath information through the first information, so as to realize the prediction of the second multipath information through the configuration information.

[0272] Optionally, the configuration information corresponding to the second multipath information mentioned above can be pre-configured or pre-defined.

[0273] Optionally, the aforementioned channel configuration information may be included in the first information, or the aforementioned channel configuration information may be included in the configuration information corresponding to the second multipath information, or the aforementioned channel configuration information may be included in other messages / information / signaling that are different from the first information.

[0274] For example, the configuration information corresponding to the second multipath information is at least used to configure the number of subpaths corresponding to (or included in) some or all of the N paths. In this way, the first communication device can quickly determine the path information of the subpaths by means of the number of subpaths indicated by the configuration information, and improve the accuracy of the obtained path information of the subpaths, so as to improve the performance of subsequent data transmission based on the precoded information corresponding to the path information of the subpaths.

[0275] Optionally, the configuration information can configure / indicate the number of sub-paths in various ways. Specifically, the configuration information can directly indicate the number of sub-paths contained in each of the N paths; for example, the configuration information can carry the value of the number of sub-paths. Alternatively, the configuration information can indirectly indicate the number of sub-paths contained in each of the N paths; for example, the configuration information can indicate the amplification factor of the sub-paths. The first communication device amplifies these factors for each cluster center to obtain the number of sub-paths (for example, if the first communication device knows that there are currently 3 cluster centers, and the configuration information configures the amplification factor as 5, then the total number of sub-paths is 15; or, if the first communication device knows that there are currently 3 cluster centers, and the configuration information configures the amplification factor of the first cluster center as 5, the amplification factor of the second cluster center as 10, and the amplification factor of the first cluster center as 15).

[0276] Optionally, the configuration information includes at least one of the following first to fifth indication information.

[0277] The first indication information indicates the resources of the first reference signal. For example, the first indication information may indicate at least one of time-domain resources, frequency-domain resources, spatial-domain resources, pilot resource density, and pattern. Taking the first indication information indicating a pattern as an example, after the first communication device determines the resource pattern based on the first indication information, it can estimate the channel at the corresponding resource location based on the pattern for subpath updating.

[0278] Optionally, when confirming the resource pattern, the second communication device can first obtain the predicted cluster center based on the location of the first communication device and the multipath prediction model, and then obtain the pattern of the first reference signal based on the parameters of the cluster center. For example, when the time delay spread of the cluster center corresponding to the first multipath signal is large (e.g., greater than a certain threshold), the pilot density of the first reference signal in the frequency domain is increased through the first indication information; when the angular spread of the cluster center corresponding to the first multipath signal is large, the pilot density of the first reference signal in the spatial domain is increased through the first indication information.

[0279] The second instruction information indicates the AI ​​model for acquiring the first multipath information. For example, if the first and second communication devices need to align cluster centers, the second communication device can use the second instruction information to indicate the identifier of the multipath prediction model used to generate the first multipath information, or the second communication device can directly send the first multipath information to the first communication device.

[0280] The third indication information indicates the offset of the model parameters of the AI ​​model that acquired the first multipath information. The offset is the same for different communication devices. For example, the offset indicated by the third indication information is a common offset. After the first communication device obtains the first multipath information, it needs to add this common offset to each of the N path information to obtain the final multipath information. For example, when the second communication device changes the downtilt angle, the pitch angles of all paths will change. In this case, retraining the multipath prediction model is costly; therefore, the change in downtilt angle, i.e., the common offset, can be directly added to the output first multipath information.

[0281] The fourth indication information specifies the parameters for determining the N second path information. For example, when initializing sub-paths, the same parameters as the cluster center can be used (e.g., multiple copies of the cluster center's parameters), or the sub-paths can be initialized near the cluster center according to a certain distribution, such as a Gaussian distribution. The mean of the Gaussian distribution is the cluster center, and the variance of the Gaussian distribution can be provided by the second communication device. For example, the second communication device may instruct the second communication device to initialize the sub-paths with a Gaussian distribution via the fourth indication information, where the variance of the angle distribution is 1.0 and the variance of the time delay is 3.0. In this case, the sub-paths initialized by the first communication device have different parameters. Optionally, in addition to ensuring that the sub-paths satisfy a specific distribution, the fourth indication information can also indicate the initialization parameters corresponding to the second path information by calculating the time delay spread and angle spread values.

[0282] The fifth indication information indicates the parameters used to determine the second multipath information. For example, when updating the subpath, the first communication device needs to know the termination condition (e.g., the iteration condition mentioned in Figure 4c above). The second communication device can indicate the termination condition through the fifth indication information, which can be implemented in various ways. For example, the termination condition indicates that the iteration / update rounds are stopped when a preset number of iterations / update rounds are reached (i.e., the fifth indication information can indicate the number of iterations / update rounds), or that the iteration stops when a preset correlation is reached when reconstructing the channel using the updated subpath (i.e., the fifth indication information can indicate this correlation).

[0283] In one possible implementation, the method shown in Figure 3 further includes:

[0284] S304. The first communication device sends second information, and correspondingly, the second communication device receives the second information. The second information indicates the second multipath information.

[0285] Therefore, the first communication device can also send second information indicating the second multipath information, so that the receiver of the second information can obtain the second multipath information, and the receiver can subsequently determine the precoding information based on the second multipath information to improve data transmission performance.

[0286] In one possible implementation, the aforementioned second multipath information includes N first path information, wherein the i-th first path information among the N first path information includes at least one of the following sixth to eighth indication information.

[0287] The sixth indication information indicates the number of sub-paths corresponding to (or included in) the i-th path of the N paths. Although the second communication device can indicate the number of sub-paths corresponding to (or included in) some or all of the N paths through the configuration information above, the second multipath information determined by the first communication device may update the number of sub-paths corresponding to (or included in) one or more paths. For this purpose, the first communication device can indicate the update result through the sixth indication information.

[0288] The seventh indication information indicates the parameters of the sub-path corresponding to (or included in) the i-th path of the N paths, such as at least one of time delay, angle, power, or phase. Optionally, the seventh indication information can indicate the value of the relevant parameter in a variety of ways. For example, the seventh indication information can carry the absolute value of the above parameters (e.g., at least one of time delay, angle, power, or phase), or it can be the change or offset of the above parameters (e.g., at least one of time delay, angle, power, or phase) relative to the respective cluster center.

[0289] Optionally, the phase of each sub-path indicated by the seventh indication information may include some or all of the four phase values, which correspond to a 2*2 polarization combination. Generally, each antenna of the first communication device has two polarization directions, and each antenna of the second communication device also has two polarization directions, resulting in four polarization combinations: horizontal polarization of the first communication device - horizontal polarization of the second communication device, horizontal polarization of the first communication device - vertical polarization of the second communication device, vertical polarization of the first communication device - horizontal polarization of the second communication device, and vertical polarization of the first communication device - vertical polarization of the second communication device (optionally, horizontal and vertical can also be replaced with +45 degrees and -45 degrees).

[0290] The eighth indication information indicates the correlation between the channel information corresponding to the i-th first path information and the first channel information.

[0291] Optionally, the correlation involved in this application can be characterized by parameters such as mean square error (MSE), normalized mean square error (NMSE), or cosine similarity. For example, the aforementioned eighth indication information can indicate one or more of the MSE, NMSE, or cosine similarity between the channel information corresponding to the i-th first path information and the first channel information.

[0292] Therefore, the second multipath information determined by the first communication device may include N first path information, and each of the N first path information may include at least one of the above-mentioned items, that is, the path information of each sub-path obtained by the first communication device may include at least one of the above-mentioned items.

[0293] In one possible implementation, the method shown in Figure 3 further includes:

[0294] S305. The second communication device sends third information, and correspondingly, the first communication device receives the third information, which indicates the resources of the second reference signal; the second reference signal is used to determine the fourth channel information between the first communication device and the second communication device; wherein the channel dimension corresponding to the fourth channel information is greater than the channel dimension corresponding to the first channel information; wherein the fourth channel information is used to update the second multipath information to obtain the updated second multipath information.

[0295] Therefore, the first communication device can also receive resources indicating the second reference signal, and update the second multipath information based on the fourth channel information corresponding to the second reference signal, so as to obtain more accurate second path information.

[0296] Furthermore, the aforementioned second reference signal can be a performance monitoring reference signal. The channel dimension corresponding to the fourth channel information determined by the second reference signal is greater than the channel dimension corresponding to the first channel information. That is, the pilot density of the former is greater than the pilot density of the latter. More accurate updated second path information can be obtained through channel information with a larger channel dimension. Subsequently, the data transmission performance can be improved through the precoding information corresponding to the updated second path information.

[0297] Optionally, the channel dimension represented by the channel information may include one or more dimensions such as a spatial dimension, a frequency domain dimension, and a time domain dimension. Generally, the spatial dimension may include the dimension of the antenna port of the signal transmitter (i.e., the transmit antenna dimension) and the dimension of the antenna port of the signal receiver (i.e., the receive antenna dimension). In this application, the channel dimension represented by the channel information includes three channel dimensions as an example: one channel dimension is represented as T or T1, another channel dimension is represented as R or R1, and another channel dimension is represented as F or F1.

[0298] The channel dimension will be described below with some examples.

[0299] For example, the channel dimension represented by the first channel information is [T1, R1, F1], and the channel dimension represented by the fourth channel information is [T, R, F]. The channel dimension corresponding to the fourth channel information is greater than the channel dimension corresponding to the first channel information, satisfying at least one of the following: T is greater than T1, R is greater than R1, and F is greater than F1. Therefore, the first communication device can obtain the fourth channel information with a higher channel dimension based on the first channel information with a lower channel dimension, and the first channel information with a lower channel dimension is determined by a first reference signal. Thus, the first communication device can obtain the higher-dimensional channel information based on the lower-dimensional channel information determined by the reference signal through the above processing, thereby reducing the overhead of the reference signal, improving resource utilization, and reducing the power consumption of the terminal device.

[0300] In one implementation example, the spatial transmission process of the reference signal includes the process of the antenna port of the signal transmitting end transmitting the reference signal and the process of the antenna port of the signal receiving end receiving the reference signal. That is, the dimension of the channel information in the spatial domain can correspond to the transmitting and receiving ports of the reference signal. In other words, the dimension of the reference signal in the spatial domain can be represented as [T, R, F], where T (or T1) represents the antenna port of the signal transmitting end, and R (or R1) represents the antenna port of the signal receiving end. T greater than T1 can be understood as: the number of antenna ports of the signal transmitting end represented by the fourth channel information is greater than the number of antenna ports of the signal transmitting end represented by the first channel information; R greater than R1 can be understood as: the number of antenna ports of the signal receiving end represented by the fourth channel information is greater than the number of antenna ports of the signal receiving end represented by the first channel information.

[0301] In another implementation example, during the transmission and reception of the reference signal, the dimension of the reference signal in the frequency domain can correspond to the frequency domain resources carrying the reference signal. In other words, the dimension of the reference signal in the frequency domain can be represented as [F] in [T, R, F], where F (or F1) represents the frequency domain resources carrying the reference signal (e.g., one or more frequency domain units contained in the frequency domain resources). In other words, F greater than F1 can be understood as: the number of frequency domain units contained in the frequency domain resources represented by the fourth channel information is greater than the number of frequency domain units contained in the frequency domain resources represented by the first channel information.

[0302] Optionally, the second reference signal can be a periodically transmitted reference signal. For example, to avoid the gradual deterioration of the above scheme's performance (i.e., after a certain period, due to changes in the communication environment (e.g., movement of the communication device, movement of objects in the environment, etc.), the accuracy of the second multipath information prediction may decrease), the second communication device can periodically transmit sub-path performance monitoring pilots (i.e., the second reference signal). The pilot density of this second reference signal is higher than the pilot density of the first reference signal; that is, the pilot density of the sub-path performance monitoring pilot is higher than the pilot density of the sub-path update. Furthermore, because the pilot density is higher, the first communication device can adjust the sub-path initialization configuration to find a more suitable sub-path initialization configuration. For example, the first communication device can increase the number of sub-paths or increase the angular extension of the sub-paths.

[0303] Optionally, due to the increased pilot density, the transmission period of the second reference signal is shorter than that of the first reference signal, i.e., the transmission period of the pilot used for sub-path performance monitoring is shorter than that of the sub-path update, in order to reduce overhead.

[0304] In one possible implementation, the method shown in Figure 3 further includes:

[0305] S306. The first communication device sends a fourth message, and correspondingly, the second communication device receives the fourth message. The fourth message indicates the updated second multipath information.

[0306] Based on the above scheme, the first communication device can also send second information, enabling the recipient of the second information to obtain updated second multipath information and improve data transmission performance based on the precoding information corresponding to the updated second path information. For example, after the first communication device completes the sub-path update, it can use the updated second multipath information to feedback new sub-path parameters and performance. Correspondingly, the second communication device can update the sub-path map information using the updated second multipath information.

[0307] In one possible implementation, the method further includes: The method shown in Figure 3 also includes:

[0308] S307. The first communication device sends a fifth message, and correspondingly, the second communication device receives the fifth message. Alternatively, the second communication device sends a fifth message, and correspondingly, the first communication device receives the fifth message. The fifth message indicates sub-path map information, which indicates sub-path information between the second communication device and communication devices at one or more locations. Optionally, the sub-path map information can be replaced with other descriptions, such as sub-path information, sub-path map, multipath map, multipath map information, map information, xxx, etc.

[0309] Therefore, the first communication device can also receive or send fifth information, enabling the recipient of the fifth information to obtain sub-path map information and subsequently communicate based on the sub-path information indicated by the sub-path map information, thereby improving communication performance.

[0310] Optionally, the implementation of sub-path information can refer to the first path information described above. For example, sub-path information can indicate at least one of the following:

[0311] The number of sub-paths corresponding to (or contained in) each path (refer to the sixth instruction information);

[0312] At least one of the following for each sub-path: time delay, angle, power, or phase (see information in section 7); or

[0313] The correlation between the channel information corresponding to the sub-path information and the measured channel information (refer to the eighth indication information).

[0314] Optionally, subpath configurations at the same or similar locations may be identical. Therefore, the term "location" can be replaced with "region," whereby the subpath map information indicates the subpath information between the second communication device and communication devices in one or more regions.

[0315] Optionally, the sub-path map information may also include other information. For example, the sub-path map information may also include the location information of the environmental objects (EOs) corresponding to the communication devices at one or more of the aforementioned locations, the object type information of the environmental objects corresponding to the communication devices at one or more of the aforementioned locations, and one or more of the location information of the communication devices at one or more of the aforementioned locations. For example, the sub-path map information can be implemented using tables, formulas, indexes, etc. Taking tables as an example, the sub-path map information can be implemented as shown in Table 2 below.

[0316] Table 2

[0317] In one possible implementation, the method shown in Figure 3 further includes:

[0318] S308. The first communication device sends a sixth message, and correspondingly, the second communication device receives the sixth message. Alternatively, the second communication device sends a sixth message, and correspondingly, the first communication device receives the sixth message. The sixth message is used to update the number of sub-paths corresponding to (or including) some or all of the N paths.

[0319] Thus, the first communication device determines the second multipath information. The first communication device can also receive or send sixth information. The receiver of the sixth information can update the number of subpaths based on the sixth information. Subsequently, it can obtain more accurate updated second multipath information through the updated number of subpaths. Subsequently, it can improve data transmission performance through the precoding information corresponding to the updated second path information.

[0320] Optionally, the sixth piece of information includes at least one of the following:

[0321] The ninth instruction (i.e., the sixth instruction indicating the addition of one or more sub-paths) indicates the addition of at least one sub-path among the j-th path of the N paths; or

[0322] The tenth instruction (i.e., the sixth instruction indicates the deletion of one or more sub-paths through the tenth instruction) indicates the deletion of at least one sub-path from the k-th path among the N paths;

[0323] Where j takes some or all of the values ​​from 1 to N, k takes some or all of the values ​​from 1 to N, and j is not equal to k.

[0324] Referring to Figure 5, this application embodiment provides a communication device 500. This communication device 500 can implement the functions of the first communication device (or second communication device) in the above method embodiments, and therefore can also achieve the beneficial effects of the above method embodiments. In this application embodiment, the communication device 500 can be the first communication device (or the second communication device), or it can be an integrated circuit or component inside the first communication device (or the second communication device), such as a chip, baseband chip, modem chip, SoC chip (e.g., an SoC chip containing a modem core), SIP chip, communication module, chip system, processor, etc.

[0325] Optionally, the transceiver unit 502 may include a transmitting unit and a receiving unit, which are used to perform transmitting and receiving respectively.

[0326] In one possible implementation, when the device 500 is used to execute the method performed by the first communication device in the preceding embodiments, the device 500 includes a processing unit 501; the processing unit 501 is used to acquire first multipath information, which indicates path information of N paths between the first communication device and the second communication device, where N is a positive integer; the processing unit 501 is also used to acquire first channel information between the first communication device and the second communication device, which is related to the measurement result of a first reference signal, such as based on the first reference signal... The measurement result of the number is determined; the processing unit 501 is also used to determine the second multipath information, which is related to the first multipath information and the first channel information, for example, the second multipath information is determined based on the first multipath information and the first channel information; wherein, the second multipath information includes N first path information, the N first path information includes the i-th first path information, the N paths include the i-th path, and the i-th first path information is used to indicate the path information of each sub-path in one or more sub-paths included in the i-th path, where i takes the value from 1 to N.

[0327] In one possible implementation, when the device 500 is used to execute the method performed by the second communication device in the preceding embodiments, the device 500 includes a processing unit 501 and a transceiver unit 502; the processing unit 501 is used to determine first information, the first information indicating configuration information corresponding to second multipath information; wherein, the configuration information is at least used to configure the number of sub-paths corresponding to (or included in) some or all of the N paths between the first communication device and the second communication device; the transceiver unit 502 is used to transmit the first information; wherein, the second multipath information and the first multipath information, as well as the communication between the first communication device and the second communication device... The first multipath information is related to the first channel information. For example, the second multipath information is determined based on the first multipath information and the first channel information. The first channel information is related to the measurement result of the first reference signal. For example, the first channel information is determined based on the measurement result of the first reference signal. The first multipath information indicates the path information of the N paths, where N is a positive integer. The second multipath information includes N first path information, which includes the i-th first path information. The N paths include the i-th path. The i-th first path information is used to indicate the path information of each sub-path in one or more sub-paths included in the i-th path. The value of i is from 1 to N.

[0328] In one possible implementation, when the device 500 is used to execute the method performed by the second communication device in the preceding embodiments, the device 500 includes a transceiver unit 502; the transceiver unit 502 is used to receive second information, the second information indicating second multipath information; wherein, the second multipath information is related to the first multipath information and the first channel information between the first communication device and the second communication device, for example, the second multipath information is determined based on the first multipath information and the first channel information, the first channel information is related to the measurement result of the first reference signal, for example, the first channel information is determined based on the measurement result of the first reference signal; the first multipath information indicates the path information of N paths between the first communication device and the second communication device, where N is a positive integer; the second multipath information includes N first path information, the N first path information includes the i-th first path information, the N paths include the i-th path, and the i-th first path information is used to indicate the path information of each of the one or more sub-paths included in the i-th path, where i takes the value from 1 to N.

[0329] In one possible implementation, when the device 500 is used to execute the method performed by the second communication device in the preceding embodiments, the device 500 includes a processing unit 501 and a transceiver unit 502; the processing unit 501 is used to determine third information; the transceiver unit 502 is used to transmit the third information; the third information indicates the resources of a second reference signal, the second reference signal being used to determine fourth channel information between the first communication device and the second communication device; wherein the channel dimension corresponding to the fourth channel information is greater than the channel dimension corresponding to the first channel information between the first communication device and the second communication device, and the first channel information is related to the measurement result of the first reference signal, for example, the first channel information is based on the first reference signal. The signal measurement results determine that the fourth channel information is used to update the second multipath information to obtain the updated second multipath information; wherein, the second multipath information is related to the first multipath information and the first channel information, for example, the second multipath information is determined based on the first multipath information and the first channel information; the first multipath information indicates the path information of N paths between the first communication device and the second communication device, where N is a positive integer; the second multipath information includes N first path information, the N first path information includes the i-th first path information, the N paths include the i-th path, and the i-th first path information is used to indicate the path information of each sub-path in one or more sub-paths included in the i-th path, where i takes the value from 1 to N.

[0330] In one possible design, when the communication device 500 is a terminal device or a communication module within a terminal, the functionality of the processing unit 501 can be implemented by one or more processors. Specifically, the processor may include a modem chip, a SoC chip (such as a SoC chip containing a modem core), or a SIP chip. The functionality of the transceiver unit 502 can be implemented by transceiver circuitry.

[0331] In one possible design, when the communication device 500 is a circuit or chip in a terminal responsible for communication functions, such as a modem chip, a SoC chip, or a SoC chip or SIP chip containing a modem core, the function of the processing unit 501 can be implemented by a circuit system in the aforementioned chip that includes one or more processors or processor cores. The function of the transceiver unit 502 can be implemented by the interface circuitry or data transceiver circuitry on the aforementioned chip.

[0332] It should be noted that the information execution process of the unit of the above-mentioned communication device 500 can be specifically described in the method embodiment shown above in this application, and will not be repeated here.

[0333] Please refer to Figure 6, which is another schematic structural diagram of the communication device 600 provided in this application. The communication device 600 includes a logic circuit 601 and an input / output interface 602. The communication device 600 can be a chip or an integrated circuit.

[0334] In Figure 5, the transceiver unit 502 can be a communication interface, which can be the input / output interface 602 in Figure 6, and the input / output interface 602 can include an input interface and an output interface. Alternatively, the communication interface can also be a transceiver circuit, which can include an input interface circuit and an output interface circuit.

[0335] In one possible implementation, when the device 600 is used to execute the method performed by the first communication device in the preceding embodiments, the logic circuit 601 is used to acquire first multipath information, which indicates path information of N paths between the first communication device and the second communication device, where N is a positive integer; the logic circuit 601 is also used to acquire first channel information between the first communication device and the second communication device, which is related to the measurement result of the first reference signal, for example, determined based on the measurement result of the first reference signal; the logic circuit 601 is also used to determine second multipath information, which is related to the first multipath information and the first channel information, for example, determined based on the first multipath information and the first channel information; wherein, the second multipath information includes N first path information, which includes the i-th first path information, the N paths include the i-th path, and the i-th first path information is used to indicate the path information of each of the one or more sub-paths included in the i-th path, where i takes the value from 1 to N.

[0336] In one possible implementation, when the device 600 is used to execute the method performed by the second communication device in the preceding embodiments, the logic circuit 601 is used to determine first information, which indicates configuration information corresponding to the second multipath information; wherein, the configuration information is at least used to configure the number of sub-paths corresponding to (or included in) some or all of the N paths between the first and second communication devices; the input / output interface 602 is used to send the first information; wherein, the second multipath information is related to the first multipath information and the first channel information between the first and second communication devices, for example... The second multipath information is determined based on the first multipath information and the first channel information. The first channel information is related to the measurement result of the first reference signal, for example, the first channel information is determined based on the measurement result of the first reference signal. The first multipath information indicates the path information of the N paths, where N is a positive integer. The second multipath information includes N first path information, which includes the i-th first path information. The N paths include the i-th path. The i-th first path information is used to indicate the path information of each sub-path in one or more sub-paths contained in the i-th path, where i takes the value from 1 to N.

[0337] In one possible implementation, when the device 600 is used to execute the method performed by the second communication device in the preceding embodiments, the input / output interface 602 is used to receive second information, which indicates second multipath information; wherein, the second multipath information is related to the first multipath information and the first channel information between the first communication device and the second communication device, for example, the second multipath information is determined based on the first multipath information and the first channel information, and the first channel information is related to the measurement result of the first reference signal, for example, the first channel information is determined based on the measurement result of the first reference signal; the first multipath information indicates the path information of N paths between the first communication device and the second communication device, where N is a positive integer; the second multipath information includes N first path information, the N first path information includes the i-th first path information, the N paths include the i-th path, and the i-th first path information is used to indicate the path information of each sub-path in one or more sub-paths included in the i-th path, where i takes the value from 1 to N.

[0338] In one possible implementation, when the device 600 is used to execute the method performed by the second communication device in the preceding embodiments, the logic circuit 601 is used to determine third information; the input / output interface 602 is used to send the third information; the third information indicates the resources of a second reference signal, the second reference signal being used to determine fourth channel information between the first and second communication devices; wherein the channel dimension corresponding to the fourth channel information is greater than the channel dimension corresponding to the first channel information between the first and second communication devices, and the first channel information is related to the measurement result of the first reference signal, for example, the first channel information is determined based on the measurement result of the first reference signal. The fourth channel information is used to update the second multipath information to obtain the updated second multipath information; wherein, the second multipath information is related to the first multipath information and the first channel information, for example, the second multipath information is determined based on the first multipath information and the first channel information; the first multipath information indicates the path information of N paths between the first communication device and the second communication device, where N is a positive integer; the second multipath information includes N first path information, the N first path information includes the i-th first path information, the N paths include the i-th path, and the i-th first path information is used to indicate the path information of each sub-path in one or more sub-paths included in the i-th path, where i takes the value from 1 to N.

[0339] The logic circuit 601 and the input / output interface 602 can also perform other steps performed by the first or second communication device in any embodiment and achieve corresponding beneficial effects, which will not be elaborated here.

[0340] In one possible implementation, the processing unit 501 shown in FIG5 can be the logic circuit 601 in FIG6.

[0341] Optionally, the logic circuit 601 can be a processing device, the functions of which can be partially or entirely implemented in software.

[0342] Optionally, the processing apparatus may include a memory and a processor, wherein the memory is used to store a computer program, and the processor reads and executes the computer program stored in the memory to perform the corresponding processing and / or steps in any of the method embodiments.

[0343] Optionally, the processing device may consist of only a processor. A memory for storing computer programs is located outside the processing device, and the processor is connected to the memory via circuitry / wires to read and execute the computer programs stored in the memory. The memory and processor may be integrated together or physically independent of each other.

[0344] Optionally, the processing device may be one or more chips, or one or more integrated circuits. For example, the processing device may be one or more field-programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), system-on-chips (SoCs), central processing units (CPUs), network processors (NPs), digital signal processors (DSPs), microcontroller units (MCUs), programmable logic devices (PLDs), or other integrated chips, or any combination of the above chips or processors.

[0345] Please refer to Figure 7, which shows the communication device 700 involved in the above embodiments provided in the embodiments of this application. Specifically, the communication device 700 can be the communication device as a terminal device in the above embodiments. The example shown in Figure 7 is that the terminal device is implemented through the terminal device (or the components in the terminal device).

[0346] The present invention provides a possible logical structure diagram of the communication device 700, which may include, but is not limited to, at least one processor 701 and a communication port 702.

[0347] In Figure 5, the transceiver unit 502 can be a communication interface, which can be the communication port 702 in Figure 7. The communication port 702 can include an input interface and an output interface. Alternatively, the communication port 702 can also be a transceiver circuit, which can include an input interface circuit and an output interface circuit.

[0348] Further optionally, the device may also include at least one of a memory 703 and a bus 704. In the embodiments of this application, the at least one processor 701 is used to control the operation of the communication device 700.

[0349] Furthermore, the processor 701 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 devices, transistor logic devices, hardware components, or any combination thereof. It can implement or execute the various exemplary logic blocks, modules, and circuits described in conjunction with the disclosure of this application. The processor can also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a digital signal processor and a microprocessor, etc. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0350] It should be noted that the communication device 700 shown in Figure 7 can be used to implement the steps implemented by the terminal device in the aforementioned method embodiments and achieve the corresponding technical effects of the terminal device. The specific implementation of the communication device shown in Figure 7 can be referred to the description in the aforementioned method embodiments, and will not be repeated here.

[0351] Please refer to Figure 8, which is a structural schematic diagram of the communication device 800 involved in the above embodiments provided in the embodiments of this application. Specifically, the communication device 800 can be a communication device as a network device in the above embodiments. The example shown in Figure 8 is that the network device is implemented through a network device (or a component in the network device). The structure of the communication device can be referred to the structure shown in Figure 8.

[0352] The communication device 800 includes at least one processor 811 and at least one network interface 814. Optionally, the communication device further includes at least one memory 812, at least one transceiver 813, and one or more antennas 815. The processor 811, memory 812, transceiver 813, and network interface 814 are connected, for example, via a bus. In this embodiment, the connection may include various interfaces, transmission lines, or buses, etc., and this embodiment is not limited thereto. The antenna 815 is connected to the transceiver 813. The network interface 814 enables the communication device to communicate with other communication devices through a communication link. For example, the network interface 814 may include a network interface between the communication device and core network equipment, such as an S1 interface, or a network interface between the communication device and other communication devices (e.g., other network devices or core network equipment), such as an X2 or Xn interface.

[0353] In Figure 5, the transceiver unit 502 can be a communication interface, which can be the network interface 814 in Figure 8. The network interface 814 can include an input interface and an output interface. Alternatively, the network interface 814 can also be a transceiver circuit, which can include an input interface circuit and an output interface circuit.

[0354] The processor 811 is mainly used to process communication protocols and communication data, control the entire communication device, execute software programs, and process the data of the software programs, for example, to support the communication device in performing the actions described in the embodiments. The communication device may include a baseband processor and a central processing unit (CPU). The baseband processor is mainly used to process communication protocols and communication data, while the CPU is mainly used to control the entire terminal device, execute software programs, and process the data of the software programs. The processor 811 in Figure 8 can integrate the functions of the baseband processor and the CPU. Those skilled in the art will understand that the baseband processor and the CPU can also be independent processors interconnected through technologies such as buses. The terminal device may include multiple baseband processors to adapt to different network standards, and the terminal device may include multiple CPUs to enhance its processing capabilities. The various components of the terminal device can be connected through various buses. The baseband processor can also be described as a baseband processing circuit or a baseband processing chip. The CPU can also be described as a central processing circuit or a central processing chip. The function of processing communication protocols and communication data can be built into the processor or stored in memory as a software program, which is then executed by the processor to implement the baseband processing function.

[0355] The memory is primarily used to store software programs and data. The memory 812 can exist independently or be connected to the processor 811. Optionally, the memory 812 can be integrated with the processor 811, for example, integrated into a single chip. The memory 812 can store program code that executes the technical solutions of the embodiments of this application, and its execution is controlled by the processor 811. The various types of computer program code being executed can also be considered as drivers for the processor 811.

[0356] Figure 8 shows only one memory and one processor. In actual terminal devices, there may be multiple processors and multiple memories. Memory can also be called storage medium or storage device, etc. Memory can be a storage element on the same chip as the processor, i.e., an on-chip storage element, or it can be a separate storage element; this application does not limit this.

[0357] Transceiver 813 can be used to support the reception or transmission of radio frequency (RF) signals between a communication device and a terminal. Transceiver 813 can be connected to antenna 815. Transceiver 813 includes a transmitter Tx and a receiver Rx. Specifically, one or more antennas 815 can receive RF signals. The receiver Rx of transceiver 813 receives the RF signals from the antennas, converts the RF signals into digital baseband signals or digital intermediate frequency (IF) signals, and provides the digital baseband signals or IF signals to processor 811 so that processor 811 can perform further processing on the digital baseband signals or IF signals, such as demodulation and decoding. Furthermore, the transmitter Tx in transceiver 813 is also used to receive modulated digital baseband signals or IF signals from processor 811, convert the modulated digital baseband signals or IF signals into RF signals, and transmit the RF signals through one or more antennas 815. Specifically, the receiver Rx can selectively perform one or more stages of downmixing and analog-to-digital conversion on the radio frequency signal to obtain a digital baseband signal or a digital intermediate frequency (IF) signal. The order of these downmixing and IF conversion processes is adjustable. The transmitter Tx can selectively perform one or more stages of upmixing and digital-to-analog conversion on the modulated digital baseband signal or digital IF signal to obtain a radio frequency signal. The order of these upmixing and IF conversion processes is also adjustable. The digital baseband signal and the digital IF signal can be collectively referred to as digital signals.

[0358] The transceiver 813 can also be called a transceiver unit, transceiver, transceiver device, etc. Optionally, the device in the transceiver unit that performs the receiving function can be regarded as the receiving unit, and the device in the transceiver unit that performs the transmitting function can be regarded as the transmitting unit. That is, the transceiver unit includes a receiving unit and a transmitting unit. The receiving unit can also be called a receiver, input port, receiving circuit, etc., and the transmitting unit can be called a transmitter, transmitter, or transmitting circuit, etc.

[0359] It should be noted that the communication device 800 shown in Figure 8 can be used to implement the steps implemented by the network device in the aforementioned method embodiments and achieve the corresponding technical effects of the network device. The specific implementation of the communication device 800 shown in Figure 8 can be referred to the description in the aforementioned method embodiments, and will not be repeated here.

[0360] Please refer to Figure 9, which is a schematic diagram of the structure of the communication device involved in the above embodiments provided in the embodiments of this application.

[0361] Optionally, the communication device 900 includes, for example, modules, units, elements, circuits, or interfaces, etc., appropriately configured together to execute the technical solutions provided in this application. The communication device 900 may be the terminal device or network device described above, or a component (e.g., a chip) within these devices, used to implement the methods described in the following method embodiments. The communication device 900 includes one or more processors 901. The processor 901 may be a general-purpose processor or a dedicated processor, etc. For example, it may be a baseband processor or a central processing unit. The baseband processor can be used to process communication protocols and communication data, and the central processing unit can be used to control the communication device (e.g., RAN node, terminal, or chip, etc.), execute software programs, and process data from the software programs.

[0362] Optionally, in one design, processor 901 may include program 903 (sometimes also referred to as code or instructions), which may be executed on processor 901 to cause communication device 900 to perform the methods described in the following embodiments. In yet another possible design, communication device 900 includes circuitry (not shown in FIG9).

[0363] Optionally, the communication device 900 may include one or more memories 902 storing a program 904 (sometimes referred to as code or instructions), which can be run on the processor 901 to cause the communication device 900 to perform the methods described in the above method embodiments.

[0364] Optionally, the processor 901 and / or memory 902 may include AI modules 907 and 908, which are used to implement AI-related functions. The AI ​​modules can be implemented through software, hardware, or a combination of both. For example, the AI ​​module may include a radio intelligence control (RIC) module. For instance, the AI ​​module may be a near real-time RIC or a non-real-time RIC.

[0365] Optionally, the processor 901 and / or memory 902 may also store data. The processor and memory may be configured separately or integrated together.

[0366] Optionally, the communication device 900 may further include a transceiver 905 and / or an antenna 906. The processor 901, sometimes referred to as a processing unit, controls the communication device (e.g., a RAN node or terminal). The transceiver 905, sometimes referred to as a transceiver unit, transceiver, transceiver circuit, or transceiver, is used to implement the transmission and reception functions of the communication device via the antenna 906.

[0367] In Figure 5, the processing unit 501 can be a processor 901. The transceiver unit 502 shown in Figure 5 can be a communication interface, which can be the transceiver 905 in Figure 9. The transceiver 905 can include an input interface and an output interface. Alternatively, the transceiver 905 can also be a transceiver circuit, which can include an input interface circuit and an output interface circuit.

[0368] This application also provides a computer-readable storage medium for storing one or more computer-executable instructions. When the computer-executable instructions are executed by a computer, the computer performs the method described in the possible implementations of the first or second communication device in the foregoing embodiments.

[0369] This application also provides a computer program product (or computer program) that, when executed by a computer, allows the computer to execute the method described above for the possible implementation of the first or second communication device.

[0370] This application also provides a chip system including at least one processor for supporting a communication device in implementing the functions involved in the possible implementations of the communication device described above. Optionally, the chip system further includes an interface circuit that provides program instructions and / or data to the at least one processor. In one possible design, the chip system may also include a memory for storing the program instructions and data necessary for the communication device. The chip system may be composed of chips or may include chips and other discrete devices, wherein the communication device may specifically be the first communication device or the second communication device in the aforementioned method embodiments.

[0371] This application also provides a communication system, which includes the first communication device in any of the above embodiments.

[0372] Optionally, the communication system may also include a second communication device.

[0373] In the several embodiments provided in this application, the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual couplings, direct couplings, or communication connections may be through some interfaces, indirect couplings, or communication connections between devices or units, and may be electrical, mechanical, or other forms. Whether a function is implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0374] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0375] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit. If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

Claims

1. A communication method characterized by comprising: include: Obtain first multipath information, which indicates path information of N paths between the first communication device and the second communication device, where N is a positive integer; Acquire first channel information between the first communication device and the second communication device, wherein the first channel information is related to the measurement result of the first reference signal; A second multipath information is determined, which is related to the first multipath information and the first channel information; wherein, the second multipath information includes N first path information, the N first path information includes the i-th first path information, the N paths include the i-th path, and the i-th first path information is used to indicate the path information of each sub-path in one or more sub-paths included in the i-th path, where i takes the value from 1 to N.

2. The method of claim 1, wherein, The determination of the second multipath information includes: Based on the first multipath information, N second path information are determined; wherein, the i-th second path information among the N second path information indicates the initial path information of each of the one or more sub-paths; The second multipath information is determined based on the second channel information corresponding to the N second path information and the first channel information.

3. The method of claim 2, wherein, The second channel information is obtained by processing the N second path information based on the first model.

4. The method of claim 3, wherein, Also includes: Receive channel configuration information, which indicates the channel configuration parameters of the first communication device and / or the channel configuration parameters of the second communication device; wherein, the input of the first model includes the channel configuration information.

5. The method according to any one of claims 1 to 4, characterized in that, The second multipath information is used to determine third channel information between the first communication device and the second communication device, and the third channel information is used to determine precoding information between the first communication device and the second communication device; wherein, the first channel information and the third channel information satisfy at least one of the following: The time-domain resources corresponding to the first channel information are different from the time-domain resources corresponding to the third channel information. The frequency domain resources corresponding to the first channel information and the frequency domain resources corresponding to the third channel information are different; or, The spatial resources corresponding to the first channel information are different from those corresponding to the third channel information.

6. The method according to any one of claims 1 to 5, characterized in that, Also includes: Receive first information, the first information indicating configuration information corresponding to the second multipath information; wherein, the configuration information is at least used to configure the number of sub-paths corresponding to some or all of the N paths.

7. The method of claim 6, wherein, The configuration information includes at least one of the following: The first indication information indicates the resource of the first reference signal; The second instruction information instructs the AI ​​model to acquire the first multipath information. The third indication information indicates the offset of the model parameters of the AI ​​model that acquires the first multipath information, wherein the offset is the same for different communication devices; The fourth indication information indicates the parameters for determining the N second path information; or The fifth instruction information indicates the parameters used to determine the second multipath information.

8. The method according to any one of claims 1 to 7, characterized in that, The i-th first path information among the N first path information includes at least one of the following: The sixth indication information indicates the number of sub-paths corresponding to the i-th path of the N paths; The seventh indication information indicates at least one of the following: time delay, angle, power, or phase of the sub-path corresponding to the i-th path of the N paths; or The eighth indication information indicates the correlation between the channel information corresponding to the i-th first path information and the first channel information.

9. The method according to any one of claims 1 to 8, characterized in that, Also includes: Send a second message, which indicates the second multipath information.

10. The method according to any one of claims 1 to 9, characterized in that, Also includes: Receive third information, the third information indicating the resources of the second reference signal; The second reference signal is used to determine the fourth channel information between the first communication device and the second communication device; wherein the channel dimension corresponding to the fourth channel information is greater than the channel dimension corresponding to the first channel information; The fourth channel information is used to update the second multipath information to obtain the updated second multipath information.

11. The method of claim 10, wherein, Also includes: A fourth message is sent, which indicates the updated second multipath information.

12. The method according to any one of claims 1 to 11, characterized in that, Also includes: Receive or send a fifth message, the fifth message indicating sub-path map information, the sub-path map information indicating sub-path information between the second communication device and communication devices at one or more locations.

13. The method according to any one of claims 1 to 12, characterized in that, Also includes: Receive or send a sixth message, which is used to update the number of sub-paths corresponding to some or all of the N paths.

14. A communication method, comprising: include: First information is determined, which indicates configuration information corresponding to second multipath information; wherein, the configuration information is at least used to configure the number of sub-paths corresponding to some or all of the N paths between the first communication device and the second communication device; Send the first message; Wherein, the second multipath information is related to the first multipath information and the first channel information between the first communication device and the second communication device, and the first channel information is related to the measurement result of the first reference signal; the first multipath information indicates the path information of the N paths, where N is a positive integer; the second multipath information includes N first path information, the N first path information includes the i-th first path information, the N paths include the i-th path, and the i-th first path information is used to indicate the path information of each sub-path in one or more sub-paths included in the i-th path, where i takes the value from 1 to N.

15. The method of claim 14, wherein, The first multipath information is used to determine N second path information, wherein the i-th second path information among the N second path information indicates the initial path information of each sub-path in the one or more sub-paths; The second channel information corresponding to the N second path information and the first channel information are used to determine the second multipath information.

16. The method of claim 15, wherein, The second channel information is obtained by processing the N second path information based on the first model.

17. The method of claim 16, wherein, Also includes: Send channel configuration information, which indicates the channel configuration parameters of the first communication device and / or the channel configuration parameters of the second communication device; wherein, the input of the first model includes the channel configuration information.

18. The method according to any one of claims 14 to 17, characterized in that, The second multipath information is used to determine third channel information between the first communication device and the second communication device, and the third channel information is used to determine precoding information between the first communication device and the second communication device; wherein, the first channel information and the third channel information satisfy at least one of the following: The time-domain resources corresponding to the first channel information are different from the time-domain resources corresponding to the third channel information. The frequency domain resources corresponding to the first channel information and the frequency domain resources corresponding to the third channel information are different; or, The spatial resources corresponding to the first channel information are different from those corresponding to the third channel information.

19. The method according to any one of claims 14 to 18, characterized in that, The configuration information includes at least one of the following: The first indication information indicates the resource of the first reference signal; The second instruction information instructs the AI ​​model to acquire the first multipath information. The third indication information indicates the offset of the model parameters of the AI ​​model that acquires the first multipath information, wherein the offset is the same for different communication devices; The fourth indication information indicates the parameters for determining the N second path information; or The fifth instruction information indicates the parameters used to determine the second multipath information.

20. The method according to any one of claims 14 to 19, characterized in that, The i-th first path information among the N first path information includes at least one of the following: The sixth indication information indicates the number of sub-paths corresponding to the i-th path of the N paths; The seventh indication information indicates at least one of the following: time delay, angle, power, or phase of the sub-path corresponding to the i-th path of the N paths; or The eighth indication information indicates the correlation between the channel information corresponding to the i-th first path information and the first channel information.

21. The method according to any one of claims 14 to 20, characterized in that, Also includes: Receive second information, which indicates the second multipath information.

22. The method according to any one of claims 14 to 21, characterized in that, Also includes: Send a third message, the third message indicating the resources of the second reference signal; The second reference signal is used to determine the fourth channel information between the first communication device and the second communication device; wherein the channel dimension corresponding to the fourth channel information is greater than the channel dimension corresponding to the first channel information; The fourth channel information is used to update the second multipath information to obtain the updated second multipath information.

23. The method of claim 22, wherein, Also includes: Receive a fourth message, which indicates the updated second multipath information.

24. The method according to any one of claims 14 to 23, characterized in that, Also includes: Receive or send a fifth message, the fifth message indicating sub-path map information, the sub-path map information indicating sub-path information between the second communication device and communication devices at one or more locations.

25. The method according to any one of claims 14 to 24, characterized in that, Also includes: Receive or send a sixth message, which is used to update the number of sub-paths corresponding to some or all of the N paths.

26. A communications device, characterized by Includes a module for performing the method as described in any one of claims 1 to 25.

27. A communications device, characterized by It includes at least one processor coupled to a memory; the at least one processor is used to perform the method as described in any one of claims 1 to 25.

28. The communication apparatus according to claim 27, wherein The communication device is a chip or chip system.

29. A readable storage medium, characterized by, The storage medium stores a computer program or instructions, which, when executed by a communication device, implement the method as described in any one of claims 1 to 25.

30. A computer program product, characterised in that, comprising instructions that, when executed on a computer, cause the computer to perform the method of any one of claims 1 to 25.

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