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

Abstract

The embodiment of the invention provides a communication method, a communication device, a storage medium and a program product, relates to the technical field of communication, and can solve the technical problem of poor resource utilization rate in related technologies. The communication method is applied to a first node, and the method comprises the following steps: sending precoding matrix indication information to a second node; the precoding matrix indicated by the precoding matrix indication information is determined based on a first scaling factor; the first scaling factor corresponds to a wave beam in the precoding matrix and is used for determining the transmitting power of the wave beam.

Description

Technical Field

[0001] This disclosure relates to the field of communication technology, and in particular to a communication method, communication device, storage medium, and program product. Background Technology

[0002] With the development of mobile communication networks, significantly increasing the number of antennas has successfully achieved more substantial beamforming gain in the beam direction. This gain improvement, without consuming additional time-frequency resources, greatly increases system throughput and significantly enhances signal coverage for cell-edge users, thereby improving overall network performance and service quality. However, stronger beamforming gain may cause serious interference to other nearby wireless communication systems, affecting their normal operation and data transmission quality.

[0003] Currently, interference with other communication systems can be avoided by not using beams that might affect them.

[0004] However, communication methods that avoid using beams that might affect other communication systems to reduce interference suffer from poor resource utilization. Summary of the Invention

[0005] This disclosure provides a communication method, communication device, storage medium, and program product, which can solve the technical problem of poor resource utilization in related technologies.

[0006] On the one hand, a communication method is provided, applied to a first node, the method comprising:

[0007] Send a precoding matrix indicator (PMI) to the second node; the precoding matrix indicated by the precoding matrix indicator is determined based on a first scaling factor; the first scaling factor corresponds to a beam in the precoding matrix and is used to determine the transmit power of the beam.

[0008] Furthermore, a communication device is provided, the communication device including a transmitting module.

[0009] The transmitting module is used to send precoding matrix indication information to the second node; the precoding matrix indicated by the precoding matrix indication information is determined based on a first scaling factor; the first scaling factor corresponds to a beam in the precoding matrix and is used to determine the transmit power of the beam.

[0010] On the other hand, another communication method is provided for the second node, the method comprising:

[0011] The system receives precoding matrix indication information sent by a first node; the precoding matrix indicated by the precoding matrix indication information is determined based on a first scaling factor; the first scaling factor corresponds to a beam in the precoding matrix and is used to determine the transmit power of the beam.

[0012] The signal is sent to the first node based on the precoding matrix.

[0013] On the other hand, another communication device is provided, including a receiving module and a transmitting module;

[0014] The receiving module is used to receive precoding matrix indication information sent by the first node; the precoding matrix indicated by the precoding matrix indication information is determined based on a first scaling factor; the first scaling factor corresponds to a beam in the precoding matrix and is used to determine the transmit power of the beam.

[0015] The sending module is used to send a signal to the first node based on the precoding matrix.

[0016] In another aspect, a communication device is provided, comprising: a memory and a processor; the memory and the processor are coupled; the memory is used to store a computer program; and the processor, when executing the computer program, implements the method described in any of the above embodiments.

[0017] In another aspect, a computer-readable storage medium is provided, on which computer program instructions are stored, which, when executed by a processor, implement the method described in any of the above embodiments.

[0018] In another aspect, a computer program product is provided, the computer program product including computer program instructions that, when executed by a processor, implement the method described in any of the above embodiments.

[0019] This disclosure provides a communication method applied to a first node. The method includes: sending precoding matrix indication information to a second node; the precoding matrix indicated by the precoding matrix indication information is determined based on a first scaling factor; the first scaling factor corresponds to a beam in the precoding matrix and is used to determine the transmit power of the beam. Since the first scaling factor can be used to determine the transmit power of the beam corresponding to the first scaling factor, the first scaling factor can constrain the transmit power of the beam corresponding to the first scaling factor within a desired power range. Therefore, the transmit power of each beam corresponding to the precoding matrix determined based on the first scaling factor can be within the desired power range. Furthermore, since the second node can transmit signals based on the precoding matrix indicated by the precoding matrix indication information; and since the precoding matrix is ​​determined based on the first scaling factor, the power corresponding to the beam used by the second node when transmitting signals can be within the desired power range. Also, because the transmit power of the transmitted beam affects other nearby communication systems differently, the interference is less when the transmit power of the beam is within the desired power range. At this time, other communication systems can work normally. Therefore, sending precoding indication information based on the first scaling factor to the second node can, on the one hand, reduce the interference of the beam to other nearby communication systems and ensure the normal communication of other communication systems; on the other hand, it can improve the utilization rate of communication resources by using the beam that may affect other communication systems in a limited manner. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in this disclosure, the accompanying drawings used in some embodiments of this disclosure will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings.

[0021] Figure 1 A system architecture diagram of a communication system provided for some embodiments of this disclosure;

[0022] Figure 2 A flowchart illustrating a communication method provided in some embodiments of this disclosure;

[0023] Figure 3 A flowchart illustrating another communication method provided in some embodiments of this disclosure;

[0024] Figure 4 This is a schematic diagram of the structure of a communication device provided in some embodiments of this disclosure;

[0025] Figure 5 This is a schematic diagram of the structure of another communication device provided in some embodiments of this disclosure;

[0026] Figure 6 This is a schematic diagram of the structure of another communication device provided in some embodiments of this disclosure. Detailed Implementation

[0027] The technical solutions of this disclosure will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments of this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0028] It should be noted that, in this disclosure, the terms "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplary" or "for example" in this disclosure should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of terms such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner.

[0029] Hereinafter, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

[0030] In the description of this disclosure, unless otherwise stated, " / " means "or," for example, A / B can mean A or B. "And / or" in this document is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, and B alone. Furthermore, "at least one" means one or more, and "more than one" means two or more.

[0031] With the development of mobile communication networks, significantly increasing the number of antennas has successfully achieved more substantial beamforming gain in the beam direction. This gain improvement, without consuming additional time-frequency resources, greatly increases system throughput and significantly enhances signal coverage for cell-edge users, thereby improving overall network performance and service quality. However, stronger beamforming gain may cause serious interference to other nearby wireless communication systems, affecting their normal operation and data transmission quality.

[0032] Currently, interference with other communication systems can be avoided by not using beams that might affect them.

[0033] However, communication methods that avoid using beams that might affect other communication systems to reduce interference suffer from poor resource utilization.

[0034] To address the aforementioned technical problems, this disclosure provides a communication method applied to a first node. The method includes: sending precoding matrix indication information to a second node; the precoding matrix indicated by the precoding matrix indication information is determined based on a first scaling factor; the first scaling factor corresponds to a beam in the precoding matrix and is used to determine the transmit power of the beam. Since the first scaling factor can be used to determine the transmit power of the beam corresponding to the first scaling factor, it can constrain the transmit power of the beam corresponding to the first scaling factor within a desired power range. Furthermore, the transmit power of each beam corresponding to the precoding matrix determined based on the first scaling factor is within the desired power range. Also, since the second node can transmit signals based on the precoding matrix indicated by the precoding matrix indication information; and since the precoding matrix is ​​determined based on the first scaling factor, the power corresponding to the beam used by the second node when transmitting signals is within the desired power range. Moreover, because the transmit power of the transmitted beam affects other nearby communication systems differently, the interference is less when the transmit power of the beam is within the desired power range. At this time, other communication systems can work normally. Therefore, sending precoding indication information based on the first scaling factor to the second node can, on the one hand, reduce the interference of the beam to other nearby communication systems and ensure the normal communication of other communication systems; on the other hand, it can improve the utilization rate of communication resources by using the beam that may affect other communication systems in a limited manner.

[0035] The communication method provided in this disclosure can be applied to, for example, Figure 1 In the aforementioned communication system, such as Figure 1 As shown, the communication system includes a first node 101 and a second node 102.

[0036] The first node 101 is used to send precoding matrix indication information to the second node 102. The precoding matrix indicated by the precoding matrix indication information is determined based on a first scaling factor; the first scaling factor corresponds to the beam in the precoding matrix and is used to determine the transmit power of the beam.

[0037] The second node 102 is used to receive precoding matrix indication information sent by the first node; or to send a signal to the first node 101 based on the precoding matrix indicated by the precoding matrix indication information.

[0038] For example, the first node 101 can be a mobile phone, tablet computer, desktop computer, laptop computer, handheld computer, notebook computer, ultra-mobile personal computer (UMPC), netbook, as well as cellular phone, personal digital assistant (PDA), augmented reality (AR) / virtual reality (VR) device. This application embodiment does not impose special limitations on the specific form of the electronic device. It can interact with the user through one or more methods such as a keyboard, touchpad, touch screen, remote control, voice interaction, or handwriting device.

[0039] The second node 102 can be a base station, an evolved node base station (eNB), a next-generation node base station (gNB), a new radio eNB, a macro base station, a micro base station, a high-frequency base station or a transmission and reception point (TRP), a non-3GPP access network (such as WiFi), and / or a non-3GPP interworking function (N3IWF), etc.

[0040] It should be noted that, Figure 1 This is just an example framework diagram. Figure 1 The number of devices included and the names of each device are unlimited.

[0041] The application scenarios of the embodiments disclosed herein are not limited. The system architecture and business scenarios described in the embodiments of this disclosure are for the purpose of more clearly illustrating the technical solutions of the embodiments of this disclosure, and do not constitute a limitation on the technical solutions provided by the embodiments of this disclosure. As those skilled in the art will know, with the evolution of network architecture and the emergence of new business scenarios, the technical solutions provided by the embodiments of this disclosure are also applicable to similar technical problems.

[0042] The communication method provided in the embodiments of this disclosure will now be described in detail with reference to the accompanying drawings.

[0043] The communication method provided in this disclosure can be applied to... Figure 1 The communication device 101 in the communication system shown. Figure 2 A flowchart of a communication method is shown, such as... Figure 2 As shown, the communication method includes the following S201:

[0044] S201, Send the precoding matrix indication information to the second node.

[0045] The precoding matrix indicated by the precoding matrix indication information is determined based on a first scaling factor; the first scaling factor corresponds to the beam in the precoding matrix and is used to determine the transmit power of the beam.

[0046] It should be understood that the first scaling factor can be used to determine the transmit power of the beam corresponding to the first scaling factor. Therefore, the first scaling factor can constrain the transmit power of the beam corresponding to the first scaling factor within the desired power range. Thus, the transmit power of each beam corresponding to the precoding matrix determined based on the first scaling factor can be within the desired power range.

[0047] It should be understood that the second node can transmit signals based on the precoding matrix indicated by the precoding matrix indication information; since the precoding matrix is ​​determined based on the first scaling factor, the transmit power corresponding to the beam used by the second node when transmitting signals can be within the expected power range.

[0048] Understandably, the interference of a transmitted beam on other nearby communication systems varies depending on the beam's transmission power. When the beam's transmission power is within the desired range, the interference to other communication systems is relatively small. In this case, other communication systems can operate normally, and therefore, precoding indication information based on the precoding matrix determined by the first scaling factor can be sent to the second node. This reduces beam interference to other nearby communication systems, ensuring their normal communication; furthermore, it improves the utilization rate of communication resources by limiting the use of beams that might affect other communication systems.

[0049] In some embodiments, sending precoding matrix indication information to the second node is achieved by sending channel state information (CSI) to the second node, the channel state information including the precoding indication information.

[0050] For example, the second node can send a reference signal (RS) to the first node; the second node receives the reference signal and sends the channel state information corresponding to the reference signal to the first node.

[0051] In some embodiments, the precoding matrix corresponds to at least one beam; at least one beam corresponds to at least one first scaling factor.

[0052] It should be understood that among the beams corresponding to the precoding matrix, different beams correspond to different expected power ranges, and the first scaling factor for determining the power of the beam is different; therefore, at least one beam can correspond to at least one first scaling factor.

[0053] In some embodiments, the precoding matrix is ​​determined as follows: based on a first scaling factor corresponding to at least one beam, a second scaling factor corresponding to each layer in the initial precoding matrix is ​​determined; based on the second scaling factor corresponding to each layer, the initial precoding matrix is ​​scaled to obtain the precoding matrix. Wherein, one layer in the initial precoding matrix corresponds to one signal to be transmitted; the second scaling factor corresponding to one layer is used to determine the transmit power of the signal to be transmitted corresponding to that layer.

[0054] It should be understood that each layer in the precoding matrix corresponds to a beam-based signal to be transmitted. Therefore, the second scaling factor corresponding to each layer can be determined to determine the transmission power of the signal to be transmitted corresponding to each layer.

[0055] It should be understood that the parameters of each layer in the precoding matrix are related to the power of the signal to be transmitted. Based on the second scaling factor corresponding to each layer, the initial precoding matrix is ​​scaled, and the power corresponding to each layer in the resulting precoding matrix is ​​the power determined based on the second scaling factor. Thus, by determining the second scaling factor corresponding to each layer in the initial precoding matrix based on the first scaling factor corresponding to at least one beam, and by scaling the initial precoding matrix based on the second scaling factor corresponding to each layer, the precoding matrix determined based on the first scaling factor can be accurately obtained.

[0056] In some embodiments, for each layer in the precoding matrix, the second scaling factor corresponding to the layer is the first scaling factor corresponding to the layer's beam.

[0057] It should be understood that by defining the first scaling factor corresponding to the beam of each layer as the second scaling factor corresponding to that layer, it can be ensured that the signal transmission power based on the second scaling factor of that layer meets the power limit of the first scaling factor corresponding to the beam of that layer. Furthermore, this can reduce beam interference to other nearby communication systems, ensure normal communication of other communication systems, and improve the utilization rate of communication resources.

[0058] For example, for each layer in the precoding matrix, the second scaling factor corresponding to the layer is the first scaling factor corresponding to the layer's beam, satisfying the following formula (1):

[0059] g i =s i (1);

[0060] Among them, g is is the second scaling factor corresponding to a layer. i is the first scaling factor corresponding to the beam of this layer, and i is the identifier corresponding to the beam of this layer.

[0061] For example, suppose the precoding matrix includes two beams: v l,m and v l′,m′ :

[0062]

[0063] The first scaling factors for the two beams are s1 and s2, respectively. The second scaling factors determined by the first scaling factors are g1 and g2. The scaled precoding matrix is ​​as follows:

[0064]

[0065] In some embodiments, for M layers belonging to the same beam in the precoding matrix, the sum of the squares of the second scaling factors of the M layers is less than or equal to the square of the first scaling factor corresponding to the beam, where M is a positive integer.

[0066] It should be understood that all M layers of the same beam transmit signals through that beam.

[0067] It should be understood that the sum of the squares of the second scaling factors for the M layers represents the share of the transmit power of the M signals corresponding to the M layers in the total transmit power corresponding to all layers in the precoding matrix. The square of the first scaling factor for the beam represents the share of the power used to transmit that beam in the total transmit power corresponding to all transmit signals in the precoding matrix.

[0068] It should be understood that since the second scaling factor of a layer can limit the signal transmission power of that layer, and the sum of the squares of the second scaling factors of the M layers is less than or equal to the square of the first scaling factor corresponding to the beam, it means that the sum of the signal transmission power corresponding to each of the M layers can meet the power limit corresponding to the first scaling factor of the beam. This further ensures that when transmitting signals based on the precoding matrix, the transmission power corresponding to a beam is within the desired power range. Therefore, it can further reduce the beam's interference with other nearby communication systems, ensuring normal communication for other systems.

[0069] In some embodiments, for each layer in the precoding matrix, the second scaling factor corresponding to the layer is the minimum value of the first parameter and the second parameter.

[0070] It should be understood that the first parameter indicates that the power of the layer is the average power allocation; the average power allocation is the ratio of the total power corresponding to the transmitted signal to the number of layers in the precoding matrix. The second parameter indicates that layers belonging to the same beam within the beam corresponding to the precoding matrix equally share the power allocation corresponding to the first scaling factor of that same beam.

[0071] It should be understood that if the first parameter is smaller than the second parameter, it indicates that the transmit power corresponding to that layer in the initial precoding matrix is ​​within the expected power range. In this case, the first parameter is determined as the second scaling factor corresponding to that layer. That is, the transmit power corresponding to that layer is not scaled at this time.

[0072] It should be understood that if the first parameter is larger than the second parameter, it means that the transmit power corresponding to this layer in the initial precoding matrix is ​​greater than the maximum value of the expected power range. In this case, the second parameter is determined as the second scaling factor corresponding to this layer, so that the initial precoding matrix can be scaled based on the second parameter in the future. This ensures that the transmit power corresponding to this layer is within the expected power range, reduces the beam interference to other nearby communication systems, and ensures the normal communication of other communication systems.

[0073] For example, for each layer in the precoding matrix, the second scaling factor corresponding to the layer is the minimum value of the first parameter and the second parameter, satisfying the following formula (2):

[0074]

[0075] Among them, g i s is the second scaling factor corresponding to a layer. i θ represents the first scaling factor corresponding to the beam of this layer, i is the identifier corresponding to the beam of this layer, and θ represents the layer number of the precoding matrix.

[0076] For example, suppose the precoding matrix includes beams: v l,m and v l′,m′ :

[0077]

[0078] The first scaling factors for the two beams are s1 and s2, respectively. Assuming s1 < 2 / 3 and s2 > 1 / 3, the scaled precoding matrix is:

[0079]

[0080] In some embodiments, for each layer in the precoding matrix, the second scaling factor corresponding to the layer is the minimum value of the first parameter and the second parameter, which is achieved as follows: if the layer satisfies the beam power constraint, the second scaling factor corresponding to the layer is the first parameter; if the layer does not satisfy the beam power constraint, the second scaling factor corresponding to the layer is the second parameter.

[0081] In some embodiments, the beam power constraint condition satisfies the following relationship: the square of the first scaling factor corresponding to the beam of a layer is greater than the product of the number of all layers with the same beam as the layer and a first ratio; the first ratio is the reciprocal of the number of layers in the precoding matrix.

[0082] It should be understood that the square of the first scaling factor corresponding to the beam of a layer indicates the power distribution ratio of the beam in the total transmitted power. The product of the number of all layers with the same beam as the layer and the first ratio indicates the power distribution ratio of all layers. If the square of the first scaling factor corresponding to the beam of a layer is greater than the product of the number of all layers with the same beam as the layer and the first ratio, it indicates that the total transmitted power corresponding to the beam of that layer exceeds the expected power range.

[0083] In some embodiments, the second parameter satisfies the condition that there is a correspondence between the second parameter and the beam.

[0084] It should be understood that different beams correspond to different first scaling factors, therefore, the second parameter determined based on the first scaling factor of different beams is different.

[0085] In some embodiments, the second parameter of a beam is determined based on the first scaling factor corresponding to the beam, the number of layers corresponding to all layers of the beam, and the number of layers of the precoding matrix.

[0086] It should be understood that the second parameter indicates that layers belonging to the same beam within the beam corresponding to the precoding matrix equally share the power allocation corresponding to the first scaling factor of that same beam; the power allocation share corresponding to the first scaling factor is related to the total power allocable share corresponding to the precoding matrix; and the total power allocable share corresponding to the precoding matrix is ​​related to the number of layers corresponding to the precoding matrix. Therefore, the second parameter of a beam can be determined based on the first scaling factor corresponding to a beam, the number of layers corresponding to that beam, and the number of layers in the precoding matrix.

[0087] In some embodiments, for a layer in the precoding matrix where the second scaling factor is not equal to the second parameter, the second scaling factor corresponding to the layer is the minimum value between the second parameter and the third parameter.

[0088] Based on the above explanation of the second parameter, it should be understood that the second scaling factor is not equal to the second parameter, which means that the initial power allocation of the layer corresponding to the second scaling factor does not need to be limited. In this case, the second scaling factor can be determined as the minimum value between the second parameter and the third parameter.

[0089] It should be understood that the third parameter is used to indicate that after the initial power allocation in the precoding matrix is ​​reduced by the first scaling factor, the remaining allocable power in the precoding matrix will be evenly distributed to the layers in the precoding matrix that are not subject to power limitations.

[0090] It should be understood that if the second parameter of a layer is larger than the third parameter, it means that after the remaining allocable power in the precoding matrix is ​​evenly distributed to the unpower-constrained layers in the precoding matrix, the power allocated to that layer is within the expected power range. In this case, the third parameter is determined as the second scaling factor corresponding to that layer. In this way, the reduced power corresponding to the power-constrained layer can be allocated to other layers, improving power utilization.

[0091] It should be understood that if the second parameter of a layer is smaller than the third parameter, it means that after the remaining allocable power in the precoding matrix is ​​evenly distributed to the unpower-limited layers in the precoding matrix, the power allocated to that layer exceeds the expected power range. In this case, the second parameter is determined as the second scaling factor corresponding to that layer. This ensures that the total transmit power of the beam corresponding to that layer is within the expected power range, reduces beam interference to other nearby communication systems, guarantees normal communication for other systems, and improves the utilization rate of communication resources.

[0092] In some embodiments, the third parameter satisfies the following relationship: the third parameter is determined based on the remaining allocation power, the target allocation layer number, and the total number of layers in the precoding matrix; the remaining allocation power is the difference between the total power of the transmitted signal and the actual power corresponding to all layers whose power is less than the average allocation power; the target allocation layer number is the number of layers in the precoding matrix excluding layers whose power is less than the average allocation power.

[0093] For example, for a layer in the precoding matrix where the second scaling factor is not equal to the second parameter, the second scaling factor corresponding to the layer is the minimum value between the second parameter and the third parameter, satisfying the following formula (3):

[0094]

[0095] Among them, g i s is the second scaling factor corresponding to a layer. i Let θ be the first scaling factor corresponding to the beam of this layer, i be the identifier corresponding to the beam of this layer, and θ be the layer number of the precoding matrix. This represents the total power corresponding to layers whose power is less than the average power distribution. r represents the number of layers whose power is less than the average power distribution. i This indicates the layer number in the precoding matrix based on the signal transmitted by beam i.

[0096] For example, suppose the precoding matrix includes beams: v l,m and vl′,m′ :

[0097]

[0098] The first scaling factors for the two beams are s1 and s2, respectively. Assuming s1 < 2 / 3 and s2 > 1 / 3, the scaled precoding matrix is:

[0099]

[0100] In some embodiments, for each layer in the precoding matrix, the second scaling factor corresponding to the layer satisfies the following constraints: when the square of the first scaling factor corresponding to the layer's beam is less than the first parameter, the second scaling factor corresponding to the layer is the minimum of the first parameter and the fourth parameter; when the square of the first scaling factor corresponding to the layer's beam type is equal to the first parameter, the second scaling factor corresponding to the layer is equal to the third parameter.

[0101] It should be understood that if the square of the first scaling factor corresponding to the beam of a layer is less than the first parameter, it indicates that the total transmit power of that beam transmitted based on the initial precoding matrix is ​​outside the expected power range. In this case, the second scaling factor corresponding to the layer is the minimum value between the first and fourth parameters. This reduces interference from the beam to other nearby communication systems, ensuring normal communication for those systems.

[0102] It should be understood that the fourth parameter indicates the smallest second scaling factor among multiple second scaling factors determined based on at least one scaling factor corresponding to the precoding matrix. For layers requiring power limiting, scaling can be directly applied to that layer based on the smallest second scaling factor. This reduces data processing volume and improves processing efficiency.

[0103] It should be understood that if the first parameter is less than the fourth parameter, it indicates that the transmit power corresponding to the layer in the initial precoding matrix is ​​outside the expected power range. In this case, the fourth parameter is determined as the second scaling factor. This allows the initial precoding matrix to be scaled based on the fourth parameter, thereby ensuring that the transmit power corresponding to that layer is within the expected power range, reducing beam interference to other nearby communication systems, and ensuring normal communication for other communication systems.

[0104] It should be understood that if the first parameter is greater than the fourth parameter, it means that the transmit power corresponding to the layer in the initial precoding matrix is ​​within the expected power range. In this case, the first parameter can be determined as the second scaling factor, that is, there is no need to scale the power of the layer, thus ensuring the rational use of communication resources.

[0105] It should be understood that when the square of the first scaling factor corresponding to the beam type of a layer equals the first parameter, it indicates that the total transmit power of the beam transmitted based on the initial precoding matrix is ​​within the desired power range. In this case, the second scaling factor corresponding to the layer equals the third parameter. Since the third parameter indicates that after the initial power allocation in the precoding matrix is ​​reduced by the first scaling factor, the remaining allocable power in the precoding matrix is ​​evenly distributed to the layers in the precoding matrix that are not subject to power limitations. Therefore, it is possible to reduce beam interference to other nearby communication systems, ensuring normal communication for other systems while improving resource utilization.

[0106] In some embodiments, the fourth parameter satisfies the following relationship: the fourth parameter is determined based on the precoding matrix containing the minimum first scaling factor corresponding to all corresponding beams, the number of layers corresponding to at least one beam, and the number of layers in the precoding matrix.

[0107] For example, when the square of the first scaling factor corresponding to the layer's beam is less than the first parameter, the second scaling factor corresponding to the layer is the minimum of the first and fourth parameters; when the square of the first scaling factor corresponding to the layer's beam type is equal to the first parameter, the second scaling factor corresponding to the layer is equal to the third parameter, satisfying the following formula (4):

[0108]

[0109] Among them, g i s is the second scaling factor corresponding to a layer. i Let θ be the first scaling factor corresponding to the beam of this layer, i be the identifier corresponding to the beam of this layer, and θ be the layer number of the precoding matrix. This represents the total power corresponding to layers whose power is less than the average power distribution. The number of layers whose power is less than the average power distribution, m represents the number of beams in the precoding matrix, and r i This indicates the layer number in the precoding matrix based on the signal transmitted by beam i.

[0110] For example, suppose the precoding matrix includes beam v l,m v l′,m′ and v l″,m″ :

[0111]

[0112] The first scaling factors for the two beams are s1 and s2, respectively. Assuming s1 < 2 / 5, s2 > 2 / 5, and s3 = 1, the scaled precoding matrix is:

[0113]

[0114] For example, suppose the precoding matrix includes beam v l,m v l′,m′ and v l″,m″ The corresponding first scaling factors are s1, s2, and s3:

[0115]

[0116] Assuming s1 < 2 / 5, s2 = 1, s3 = 1, the scaled precoding matrix is:

[0117]

[0118] in,

[0119] In some embodiments, the precoding matrix contains at most one beam with a first scaling factor less than the first parameter; for each layer in the precoding matrix, the second scaling factor corresponding to the layer satisfies the following constraint: when the square of the first scaling factor corresponding to the beam of the layer is less than the first parameter, the second scaling factor corresponding to the layer is the minimum of the first parameter and the second parameter; when the square of the first scaling factor corresponding to the beam of the layer is equal to the first parameter, the second scaling factor corresponding to the layer is equal to the third parameter.

[0120] It should be understood that the precoding matrix contains at most one beam with a first scaling factor less than the first parameter, meaning that only one beam requiring power clipping can be selected in the precoding matrix. This reduces the workload of determining the nodes of the precoding matrix and improves processing efficiency.

[0121] It should be understood that if the square of the first scaling factor corresponding to the beam of a layer is less than the first parameter, it indicates that the layer is a layer that needs to be power-limited. In this case, the second scaling factor corresponding to the layer is the minimum value between the first parameter and the second parameter.

[0122] It should be understood that if the square of the first scaling factor corresponding to the layer's beam equals the first parameter, it indicates that the layer does not require power limiting. In this case, the second scaling factor corresponding to the layer equals the third parameter. Since the third parameter indicates that after the initial power allocation in the precoding matrix is ​​reduced by the first scaling factor, the remaining allocable power in the precoding matrix will be evenly distributed to the unpower-limited layers in the precoding matrix, resource utilization can be improved while reducing beam interference to other nearby communication systems and ensuring normal communication for other systems.

[0123] For example, when the square of the first scaling factor corresponding to the beam of the layer is less than the first parameter, the second scaling factor corresponding to the layer is the minimum value between the first parameter and the second parameter; when the square of the first scaling factor corresponding to the beam of the layer is equal to the first parameter, the second scaling factor corresponding to the layer is equal to the third parameter, satisfying the following formula (5):

[0124]

[0125] Among them, g i s is the second scaling factor corresponding to a layer. i Let θ be the first scaling factor corresponding to the beam of this layer, i be the identifier corresponding to the beam of this layer, and θ be the layer number of the precoding matrix. This represents the total power corresponding to layers whose power is less than the average power distribution. r represents the number of layers whose power is less than the average power distribution. i This indicates the layer number in the precoding matrix based on the signal transmitted by beam i.

[0126] For example, suppose the precoding matrix includes: v l,m v l′,m′ and v l″,m″ The corresponding scaling factors are s1, s2 and s3:

[0127]

[0128] Assuming s1 < 2 / 5, s2 = 1, s3 = 1, the scaled precoding matrix is:

[0129]

[0130]

[0131] In some embodiments, the method further includes: reporting a second scaling factor corresponding to each layer in the precoding matrix to the second node.

[0132] It should be understood that reporting the second scaling factor corresponding to each layer of the precoding matrix to the second node allows the second node to obtain specific information about the power adjustments made by the first node to each layer of the precoding matrix. This enables the second node to perform relevant processing based on this information. For example, it can update the first scaling factor based on the second scaling factor, adjust the reported configuration information of the precoding matrix, and adjust the generation strategy of the precoding matrix.

[0133] In some embodiments, the second scaling factor corresponding to each layer in the precoding matrix reported to the second node satisfies the following constraints: the second scaling factor corresponding to the layer is less than or equal to the second parameter; the sum of the target squares corresponding to at least one beam is less than or equal to the number of layers in the precoding matrix; wherein, the target squares corresponding to a beam is the sum of the squares of the second scaling factors corresponding to at least one layer of a beam.

[0134] It should be understood that if the second scaling factor corresponding to a layer is less than or equal to the second parameter, and the sum of the squares of the targets corresponding to at least one beam is less than or equal to the number of layers in the precoding matrix, it can be said that the second scaling factor is determined based on the first scaling factor of the beam corresponding to that layer.

[0135] It should be understood that the second scaling factor corresponding to each layer may not have limited the power of that layer. Therefore, if the second scaling factor is determined based on the first scaling factor corresponding to the beam, it means that the transmit power of that layer has already been limited based on the first scaling factor. In this case, the second scaling factor is the one that limits the power of that layer, and it is the effective information that the second node expects to obtain. At this time, the second scaling factor is reported. In this way, it can be ensured that the information reported during the reporting of the second scaling factor is effective information, which can avoid transmitting useless and invalid information, avoid resource waste, and improve resource utilization.

[0136] For example, the second scaling factor corresponding to the layer is less than or equal to the second parameter; the sum of the squares of the targets corresponding to at least one beam is less than or equal to the number of layers in the precoding matrix, satisfying the following formula (6):

[0137]

[0138] Among them, g i s is the second scaling factor corresponding to a layer. i Let θ be the first scaling factor corresponding to the beam of this layer, i be the identifier corresponding to the beam of this layer, and θ be the layer number of the precoding matrix. This represents the total power corresponding to layers whose power is less than the average power distribution. The number of layers whose power is less than the average power distribution, m represents the number of beams in the precoding matrix, and r i This indicates the layer number in the precoding matrix based on the signal transmitted by beam i.

[0139] In some embodiments, each layer in the precoding matrix corresponds to at least one beam, and each of the at least one beam corresponds to a broadband amplitude factor. The broadband amplitude factor satisfies the following: for each layer in the precoding matrix, the broadband amplitude factor corresponding to the layer is less than the first scaling factor corresponding to the beam of the layer.

[0140] It should be understood that the broadband amplitude factor corresponding to a beam is used to determine the beam's transmit power. The fact that the broadband amplitude factors corresponding to a layer are all less than the first scaling factor corresponding to the layer's beam indicates that the transmit power of the beam corresponding to that layer is less than the power limit corresponding to the first scaling factor of that beam, and is within the desired power range. This reduces interference from the beam to other nearby communication systems, ensuring normal communication for those systems.

[0141] For example, for each layer in the precoding matrix, the broadband amplitude factor corresponding to the layer is smaller than the first scaling factor corresponding to the beam of the layer, satisfying some formula (7):

[0142]

[0143] Among them, s i Let be the first scaling factor corresponding to the beam of this layer, and let i be the identifier corresponding to the beam of this layer. This represents the broadband amplitude factor corresponding to beam i in the l-th layer.

[0144] In some embodiments, each layer in the precoding matrix corresponds to at least one beam, and each of the at least one beam corresponds to a broadband amplitude factor. The broadband amplitude factor satisfies the following: for the same beam in the precoding matrix, the sum of the squares of at least one broadband amplitude factor corresponding to the beam is less than the square of the first scaling factor corresponding to the beam.

[0145] It should be understood that multiple layers in a precoding matrix may use the same beam to transmit signals. Therefore, the total signal transmission power corresponding to the same beam needs to be within the expected power range.

[0146] It should be understood that the sum of the squares of at least one broadband amplitude factor corresponding to a beam indicates the proportion of the beam's total transmit power to the total power of the transmitter; the square of the first scaling factor corresponding to the beam indicates the expected proportion of the beam to the total power of the transmitter; if the sum of the squares of at least one broadband amplitude factor corresponding to a beam is less than the square of the first scaling factor corresponding to the beam, it indicates that the total transmit power corresponding to the beam is within the expected power range. In this way, interference from the beam to other nearby communication systems can be reduced, ensuring normal communication for other systems.

[0147] For example, for the same beam in the precoding matrix, the sum of the squares of at least one broadband amplitude factor corresponding to the beam is less than the square of the first scaling factor corresponding to the beam, satisfying the following formula (8):

[0148]

[0149] Among them, s i Let be the first scaling factor corresponding to the beam of this layer, and let i be the identifier corresponding to the beam of this layer. Let v represent the broadband amplitude factor corresponding to beam i in layer l, and v represent the layer number based on the signal transmitted by beam i.

[0150] In some embodiments, the method further includes: reporting a power scaling factor to a second node; the power scaling factor is used to scale the bandwidth amplitude factor in the precoding matrix.

[0151] It should be understood that by reporting the power scaling factor used to scale the bandwidth magnitude factor in the precoding matrix to the second node, the second node can obtain information about the modifications made to the precoding matrix by the first node. This allows the second node to provide data support for services related to the precoding matrix.

[0152] In some embodiments, the power scaling factor reported to the second node satisfies the following relationship: the broadband amplitude factor adjusted by the power scaling factor is less than or equal to the first scaling factor of the beam corresponding to the broadband amplitude factor.

[0153] It should be understood that the broadband amplitude factor adjusted by the power scaling factor is less than or equal to the first scaling factor of the beam corresponding to the broadband amplitude factor, indicating that the second node expects to obtain effective information based on this power scaling factor. This avoids transmitting useless and invalid information, prevents resource waste, and improves resource utilization.

[0154] For example, the broadband amplitude factors adjusted by the power scaling factor are all less than or equal to the first scaling factor of the beam corresponding to the broadband amplitude factor, satisfying the following formula (9):

[0155]

[0156] Among them, s i Let be the first scaling factor corresponding to the beam of this layer, and let i be the identifier corresponding to the beam of this layer. q represents the broadband amplitude factor corresponding to beam i in the l-th layer. l This represents the power scaling factor of the l-th layer.

[0157] In some embodiments, the power scaling factor reported to the second node satisfies the following relationship: the sum of the squares of the broadband amplitude factors adjusted by the power scaling factor corresponding to the same beam in the precoding matrix is ​​less than or equal to the square of the first scaling factor of the beam.

[0158] It should be understood that if the sum of the squares of the broadband amplitude factors adjusted by the power scaling factor for the same beam in the precoding matrix is ​​less than or equal to the square of the first scaling factor of the beam, it indicates that all broadband amplitude factors corresponding to that beam are power scaling factors adjusted based on the first scaling factor, which is the effective information that the second node expects to obtain. This avoids transmitting useless and invalid information, prevents resource waste, and improves resource utilization.

[0159] For example, the sum of squares of the broadband amplitude factors adjusted by the power scaling factor corresponding to the same beam in the precoding matrix is ​​less than or equal to the square of the first scaling factor of the beam, satisfying the following formula (10):

[0160]

[0161] Among them, s i Let be the first scaling factor corresponding to the beam of this layer, and let i be the identifier corresponding to the beam of this layer. Let v represent the broadband amplitude factor corresponding to beam i in layer l, v represent the layer number based on the signal transmitted by beam i, and q represent the bandwidth amplitude factor. l This represents the power scaling factor of the l-th layer.

[0162] In some embodiments, each layer in the precoding matrix corresponds to: an amplitude factor corresponding to the polarization direction, a frequency domain compression amplitude factor of the beam corresponding to the layer, and a non-zero coefficient indicator factor; for each beam in the precoding matrix, the beam corresponds to a first scaling factor in a polarization direction.

[0163] It should be understood that the amplitude factor corresponding to the polarization direction is used to indicate the power of the beam emitted based on that polarization direction.

[0164] In some embodiments, for each beam corresponding to each layer in the precoding matrix, the average power of the beam in one polarization direction is less than or equal to the square of the first scaling factor corresponding to the beam in one polarization direction.

[0165] It should be understood that the average power of the beam in one polarization direction is the average power of the beam in that layer in that polarization direction, satisfying the power limit corresponding to the square of the first scaling factor of the beam in that polarization direction. This reduces interference from the beam to other nearby communication systems, ensuring normal communication for those systems.

[0166] In some embodiments, the average power of the beam in one polarization direction is less than or equal to the square of the first scaling factor corresponding to the beam in one polarization direction, satisfying the following formula (11):

[0167]

[0168] in, The magnitude factor representing a polarization direction. This represents the frequency domain compression amplitude factor corresponding to the beam. M represents the non-zero coefficient indicator parameter corresponding to the beam layer. v The number of non-zero coefficients in the layer is represented by , where i is the beam identifier and s is the number of non-zero coefficients in the layer. i,p This represents the first scaling factor corresponding to the beam in one polarization direction.

[0169] In some embodiments, each layer in the precoding matrix corresponds to: an amplitude factor corresponding to the polarization direction, a frequency domain compression amplitude factor of the beam corresponding to the layer, and a non-zero coefficient indicator factor; the precoding matrix corresponds to at least one beam; and at least one beam corresponds to at least one first scaling factor.

[0170] In some embodiments, for each layer in the precoding matrix, the average power of each beam corresponding to the layer is less than or equal to the square of the first scaling factor corresponding to the beam.

[0171] It should be understood that the average power of each beam corresponding to a layer is less than or equal to the square of the first scaling factor corresponding to the beam. This indicates that the sum of the transmit power of each beam in that layer in different polarization directions satisfies the power limit corresponding to the first scaling factor of that beam. In this way, interference from the beam to other nearby communication systems can be reduced, ensuring the normal communication of other communication systems.

[0172] In some embodiments, the average power of each beam corresponding to the layer is less than or equal to the square of the first scaling factor corresponding to the beam, satisfying the following formula (12):

[0173]

[0174] in, The magnitude factor represents a polarization direction. The frequency domain compression amplitude factor of the beam corresponding to the layer. The non-zero coefficient indicator parameter M corresponding to the layer is represented. v The number of non-zero coefficients in the layer is represented by , where i is the identifier of the beam corresponding to the layer, and s is the number of non-zero coefficients in the beam. i The first scaling factor of the beam of the representation layer.

[0175] In some embodiments, for layers corresponding to the same beam in the precoding matrix, the average power of the layer is less than or equal to the square of the first scaling factor corresponding to the beam.

[0176] It should be understood that if the average power of all layers transmitting signals based on the same beam is less than or equal to the square of the first scaling factor corresponding to the beam, it indicates that the total power of the beam transmitted based on the precoding matrix meets the power limit corresponding to the first scaling factor. This reduces interference from the beam to other nearby communication systems, ensuring normal communication for those systems.

[0177] In some embodiments, for layers corresponding to the same beam in the precoding matrix, the average power of the layer is less than or equal to the square of the first scaling factor corresponding to the beam, satisfying the following formula (13):

[0178]

[0179] in, The magnitude factor represents a polarization direction. This represents the frequency domain compression amplitude factor of the beam. The non-zero coefficient indicator parameter M corresponding to the layer is represented. v The number of non-zero coefficients in the layer is represented by , where i is the beam identifier and s is the number of non-zero coefficients in the layer. i This represents the first scaling factor corresponding to the beam.

[0180] In some embodiments, the method further includes: reporting the power scaling factor corresponding to each layer in the precoding matrix to the second node; the power scaling factor is used to scale the amplitude corresponding to the layer.

[0181] It should be understood that by reporting the power scaling factor corresponding to each layer in the precoding matrix to the second node, the second node can obtain the adjustment information of the precoding matrix from the first node. This provides data support for the second node to perform precoding matrix-related processing.

[0182] In some embodiments, the method further includes: receiving reported configuration information sent by the second node; the reported configuration information is used to indicate the first scaling factor corresponding to the beam and / or the first scaling factor corresponding to the beam in a polarization direction.

[0183] It should be understood that through the configuration information reported by the second node, the first node can obtain the first scaling factor needed for adjusting the precoding matrix. This ensures the generation of reliable precoding matrix indication information that meets communication requirements.

[0184] It should be noted that the first scaling factor corresponding to a beam is used to indicate the proportion of the total transmitted power of that beam to the total power of the transmitter when transmitting based on the precoding matrix. The specific form of the first scaling factor can differ depending on the parameters included in the precoding matrix. Similarly, the second scaling factor can also be set to different specific forms.

[0185] For example, the first scaling factor corresponding to a beam can be one of the following: the ratio of the total power of the transmitter, the numerator of the ratio of the total power of the transmitter, the square root of the ratio of the total power of the transmitter, or the numerator of the square root of the ratio of the total power of the transmitter.

[0186] Furthermore, when conditional judgments are involved, for different forms of the first or second scaling factor, the parameters corresponding to the conditional judgment can be in a form corresponding to the first or second scaling factor.

[0187] For example, the first scaling factor can be the arithmetic square root of the numerator of the ratio, which is the ratio between the total power of the beam corresponding to the first scaling factor in the transmit precoding matrix and the total power quality of the transmitter; the first parameter can be 1, which is used to indicate that the total power of the transmitter is evenly distributed to the signal corresponding to each layer of the precoding matrix.

[0188] like Figure 3 As shown, another communication method provided in this embodiment of the disclosure is applied to... Figure 1 The second node 102, the method includes S301-S302:

[0189] S301, Receive the precoding matrix indication information sent by the first node.

[0190] The precoding matrix indicated by the precoding matrix indication information is determined based on a first scaling factor; the first scaling factor corresponds to the beam in the precoding matrix and is used to determine the transmit power of the beam.

[0191] S302, Send a signal to the first node based on the precoding matrix.

[0192] In some embodiments, the precoding matrix corresponds to at least one beam; at least one beam corresponds to at least one first scaling factor.

[0193] In some embodiments, the precoding matrix is ​​determined in the following manner:

[0194] Based on the first scaling factor corresponding to at least one beam, the second scaling factor corresponding to each layer in the initial precoding matrix is ​​determined; one layer in the initial precoding matrix corresponds to one signal to be transmitted; the second scaling factor corresponding to one layer is used to determine the transmission power of the signal to be transmitted corresponding to one layer; based on the second scaling factor corresponding to each layer, the initial precoding matrix is ​​scaled to obtain the precoding matrix.

[0195] In some embodiments, for each layer in the precoding matrix, the second scaling factor corresponding to the layer is the first scaling factor corresponding to the layer's beam.

[0196] In some embodiments, for M layers belonging to the same beam in the precoding matrix, the sum of the squares of the second scaling factors of the M layers is less than or equal to the square of the first scaling factor corresponding to the beam, where M is a positive integer.

[0197] In some embodiments, for each layer in the precoding matrix, the second scaling factor corresponding to the layer is the minimum value of the first parameter and the second parameter.

[0198] In some embodiments, for a layer in the precoding matrix where the second scaling factor is not equal to the second parameter, the second scaling factor corresponding to the layer is the minimum value between the second parameter and the third parameter.

[0199] In some embodiments, for each layer in the precoding matrix, the second scaling factor corresponding to the layer satisfies the following constraints: when the square of the first scaling factor corresponding to the layer's beam is less than the first parameter, the second scaling factor corresponding to the layer is the minimum of the first parameter and the fourth parameter; when the square of the first scaling factor corresponding to the layer's beam type is equal to the first parameter, the second scaling factor corresponding to the layer is equal to the third parameter.

[0200] In some embodiments, the precoding matrix contains at most one beam with a first scaling factor less than the first parameter; for each layer in the precoding matrix, the second scaling factor corresponding to the layer satisfies the following constraint: when the square of the first scaling factor corresponding to the beam of the layer is less than the first parameter, the second scaling factor corresponding to the layer is the minimum of the first parameter and the second parameter; when the square of the first scaling factor corresponding to the beam of the layer is equal to the first parameter, the second scaling factor corresponding to the layer is equal to the third parameter.

[0201] In some embodiments, the method further includes: receiving a second scaling factor corresponding to each layer in the precoding matrix reported by the first node.

[0202] In some embodiments, the second scaling factor corresponding to each layer in the precoding matrix reported to the second node satisfies the following constraints: the second scaling factor corresponding to the layer is less than or equal to the second parameter; the sum of the target squares corresponding to at least one beam is less than or equal to the number of layers in the precoding matrix; wherein, the target squares corresponding to a beam is the sum of the squares of the second scaling factors corresponding to at least one layer of a beam.

[0203] In some embodiments, the first parameter is used to indicate that the power of the layer is the average power; the average power is the ratio of the total power corresponding to the transmitted signal to the number of layers in the precoding matrix.

[0204] In some embodiments, the second parameter satisfies the following relationship: the second parameter corresponds to the beam; the second parameter of a beam is determined based on the first scaling factor corresponding to the beam, the number of layers corresponding to all layers of the beam, and the number of layers of the precoding matrix.

[0205] In some embodiments, the third parameter satisfies the following relationship: the third parameter is determined based on the remaining allocation power, the target allocation layer number, and the total number of layers in the precoding matrix; the remaining allocation power is the difference between the total power of the transmitted signal and the actual power corresponding to all layers whose power is less than the average allocation power; the target allocation layer number is the number of layers in the precoding matrix excluding layers whose power is less than the average allocation power.

[0206] In some embodiments, the fourth parameter satisfies the following relationship: the fourth parameter is determined based on the precoding matrix containing the minimum first scaling factor corresponding to all corresponding beams, the number of layers corresponding to at least one beam, and the number of layers in the precoding matrix.

[0207] In some embodiments, each layer in the precoding matrix corresponds to at least one beam, and each of the at least one beam corresponds to a broadband amplitude factor. The broadband amplitude factor satisfies the following: for each layer in the precoding matrix, the broadband amplitude factor corresponding to the layer is less than the first scaling factor corresponding to the beam of the layer.

[0208] In some embodiments, each layer in the precoding matrix corresponds to at least one beam, and each of the at least one beam corresponds to a broadband amplitude factor, which satisfies the following:

[0209] For the same beam in the precoding matrix, the sum of the squares of at least one broadband amplitude factor corresponding to the beam is less than the square of the first scaling factor corresponding to the beam.

[0210] In some embodiments, the method further includes: receiving a power scaling factor reported by a first node; the power scaling factor is used to scale the bandwidth amplitude factor in the precoding matrix.

[0211] In some embodiments, the power scaling factor reported to the second node satisfies the following relationship: the broadband amplitude factor adjusted by the power scaling factor is less than or equal to the first scaling factor of the beam corresponding to the broadband amplitude factor.

[0212] In some embodiments, the power scaling factor reported to the second node satisfies the following relationship: the sum of the squares of the broadband amplitude factors adjusted by the power scaling factor corresponding to the same beam in the precoding matrix is ​​less than or equal to the square of the first scaling factor of the beam.

[0213] In some embodiments, each layer in the precoding matrix corresponds to: an amplitude factor corresponding to the polarization direction, a frequency domain compression amplitude factor of the beam corresponding to the layer, and a non-zero coefficient indicator factor; for each beam in the precoding matrix, the beam corresponds to a first scaling factor in a polarization direction.

[0214] In some embodiments, for each beam corresponding to each layer in the precoding matrix, the average power of the beam in one polarization direction is less than or equal to the square of the first scaling factor corresponding to the beam in one polarization direction.

[0215] In some embodiments, the average power of the beam in one polarization direction is less than or equal to the square of the first scaling factor corresponding to the beam in one polarization direction, satisfying the following formula (14):

[0216]

[0217] in, The magnitude factor represents a polarization direction. This represents the frequency domain compression amplitude factor corresponding to the beam. M represents the non-zero coefficient indicator parameter corresponding to the beam layer. v The number of non-zero coefficients in the layer is represented by , where i is the beam identifier and s is the number of non-zero coefficients in the layer. i,p This represents the first scaling factor corresponding to the beam in one polarization direction.

[0218] In some embodiments, each layer in the precoding matrix corresponds to: an amplitude factor corresponding to the polarization direction, a frequency domain compression amplitude factor of the beam corresponding to the layer, and a non-zero coefficient indicator factor; the precoding matrix corresponds to at least one beam; and at least one beam corresponds to at least one first scaling factor.

[0219] In some embodiments, for each layer in the precoding matrix, the average power of each beam corresponding to the layer is less than or equal to the square of the first scaling factor corresponding to the beam.

[0220] In some embodiments, the average power of each beam corresponding to the layer is less than or equal to the square of the first scaling factor corresponding to the beam, satisfying the following formula (15):

[0221]

[0222] in, The magnitude factor represents a polarization direction. The frequency domain compression amplitude factor of the beam corresponding to the layer. The non-zero coefficient indicator parameter M corresponding to the layer is represented. v The number of non-zero coefficients in the layer is represented by , where i is the identifier of the beam corresponding to the layer, and s is the number of non-zero coefficients in the beam. i The first scaling factor of the beam of the representation layer.

[0223] In some embodiments, for layers corresponding to the same beam in the precoding matrix, the average power of the layer is less than or equal to the square of the first scaling factor corresponding to the beam.

[0224] In some embodiments, for layers corresponding to the same beam in the precoding matrix, the average power of the layer is less than or equal to the square of the first scaling factor corresponding to the beam, satisfying the following formula (16):

[0225]

[0226] in, The magnitude factor represents a polarization direction. This represents the frequency domain compression amplitude factor of the beam. The non-zero coefficient indicator parameter M corresponding to the layer is represented. v The number of non-zero coefficients in the layer is represented by , where i is the beam identifier and s is the number of non-zero coefficients in the layer. i This represents the first scaling factor corresponding to the beam.

[0227] In some embodiments, the method further includes: receiving a power scaling factor corresponding to each layer in the precoding matrix reported by the first node; the power scaling factor is used to scale the amplitude corresponding to the layer.

[0228] In some embodiments, the method further includes: sending configuration information to a first node; the configuration information is used to indicate a first scaling factor corresponding to the beam and / or a first scaling factor corresponding to the beam in a polarization direction.

[0229] It should be noted that, for applications Figure 1 The explanation of the embodiment of the communication method of the second node 102 can be referred to the application Figure 1 The explanation of the embodiment of the communication method of the first node 101 is not repeated here.

[0230] The disclosed embodiments can divide the communication device into functional modules according to the above method embodiments. For example, each function can be divided into a separate functional module, or two or more functions can be integrated into one functional module. The integrated module can be implemented in hardware or software. It should be noted that the module division in this disclosed embodiment is illustrative and only represents one logical functional division. In actual implementation, there may be other division methods. The following description uses the example of dividing each functional module according to each function.

[0231] Figure 4 This is a schematic diagram of a communication device provided in an embodiment of this disclosure. The communication device can execute the communication method provided in the above-described method embodiments. Figure 4 As shown, the communication device includes: a transmitting module 401.

[0232] The transmitting module 401 is used to transmit precoding matrix indication information to the second node; the precoding matrix indicated by the precoding matrix indication information is determined based on a first scaling factor; the first scaling factor corresponds to the beam in the precoding matrix and is used to determine the transmit power of the beam.

[0233] Figure 5 This is a schematic diagram of another communication device provided in an embodiment of this disclosure. The communication device can execute the communication method provided in the above-described method embodiments. Figure 5 As shown, the communication device includes a receiving module 501 and a transmitting module 502.

[0234] The receiving module 501 is used to receive precoding matrix indication information sent by the first node; the precoding matrix indicated by the precoding matrix indication information is determined based on a first scaling factor; the first scaling factor corresponds to the beam in the precoding matrix and is used to determine the transmit power of the beam.

[0235] The transmitting module 502 is used to transmit signals to the first node based on the precoding matrix.

[0236] In implementing the functionality of the integrated modules described above using hardware, this disclosure provides another possible structure for the communication device involved in the above embodiments. For example... Figure 6 As shown, the communication device includes a processor 602 and a bus 604. Optionally, the communication device may also include a memory 601; alternatively, the communication device may also include a communication interface 603.

[0237] Processor 602 may implement or execute various exemplary logic blocks, modules, and circuits described in conjunction with embodiments of this disclosure. Processor 602 may be a central processing unit, a general-purpose processor, a digital signal processor, an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It may implement or execute various exemplary logic blocks, modules, and circuits described in conjunction with embodiments of this disclosure. Processor 602 may also be a combination that implements computing functions, such as including one or more microprocessor combinations, a combination of a DSP and a microprocessor, etc.

[0238] Communication interface 603 is used to connect to other devices via a communication network. This communication network can be Ethernet, wireless access network, wireless local area network (WLAN), etc.

[0239] The memory 601 may be a read-only memory (ROM) or other type of static storage device capable of storing static information and instructions, random access memory (RAM) or other type of dynamic storage device capable of storing information and instructions, or electrically erasable programmable read-only memory (EEPROM), disk storage medium or other magnetic storage device, or any other medium capable of carrying or storing desired program code in the form of instructions or data structures and accessible by a computer, but is not limited thereto.

[0240] In one possible implementation, the memory 601 can exist independently of the processor 602. The memory 601 can be connected to the processor 602 via a bus 604 and is used to store instructions or program code. When the processor 602 calls and executes the instructions or program code stored in the memory 601, it can implement the methods provided in the embodiments of this disclosure.

[0241] In another possible implementation, the memory 601 can also be integrated with the processor 602.

[0242] Bus 604 can be an extended industry standard architecture (EISA) bus, etc. Bus 604 can be divided into address bus, data bus, control bus, etc. For ease of representation, Figure 6 The bus is represented by a single thick line, but this does not mean that there is only one bus or one type of bus.

[0243] Some embodiments of this disclosure provide a computer-readable storage medium (e.g., a non-transitory computer-readable storage medium) storing computer program instructions that, when executed on a computer, cause the computer to perform the methods described in any of the above embodiments.

[0244] For example, the computer-readable storage media described above may include, but are not limited to: magnetic storage devices (e.g., hard disks, floppy disks, or magnetic tapes), optical disks (e.g., compact disks (CDs), digital versatile disks (DVDs), etc.), smart cards, and flash memory devices (e.g., erasable programmable read-only memory (EPROMs), cards, sticks, or key drives, etc.). The various computer-readable storage media described in this disclosure may represent one or more devices for storing information and / or other machine-readable storage media. The term "machine-readable storage media" may include, but is not limited to, wireless channels and various other media capable of storing, containing, and / or carrying instructions and / or data.

[0245] This disclosure provides a computer program product containing instructions that, when run on a computer, cause the computer to perform the methods described in any of the above embodiments.

[0246] The above description is merely a specific embodiment of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any changes or substitutions within the technical scope disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A communication method, characterized in that, Applied to the first node, the method includes: Send precoding matrix indication information to the second node; the precoding matrix indicated by the precoding matrix indication information is determined based on a first scaling factor; the first scaling factor corresponds to a beam in the precoding matrix and is used to determine the transmit power of the beam.

2. The method according to claim 1, characterized in that, The precoding matrix corresponds to at least one beam; the at least one beam corresponds to at least one of the first scaling factors.

3. The method according to claim 2, characterized in that, The precoding matrix is ​​determined in the following way: Based on the first scaling factor corresponding to the at least one beam, a second scaling factor corresponding to each layer in the initial precoding matrix is ​​determined; one layer in the initial precoding matrix corresponds to one signal to be transmitted; the second scaling factor corresponding to one layer is used to determine the transmission power of the signal to be transmitted corresponding to one layer. Based on the second scaling factor corresponding to each layer, the initial precoding matrix is ​​scaled to obtain the precoding matrix.

4. The method according to claim 3, characterized in that, For each layer in the precoding matrix, the second scaling factor corresponding to the layer is the first scaling factor corresponding to the beam of the layer.

5. The method according to claim 3, characterized in that, For M layers belonging to the same beam in the precoding matrix, the sum of the squares of the second scaling factors of the M layers is less than or equal to the square of the first scaling factor corresponding to the beam, where M is a positive integer.

6. The method according to claim 3, characterized in that, For each layer in the precoding matrix, the second scaling factor corresponding to the layer is the minimum value of the first parameter and the second parameter.

7. The method according to claim 6, characterized in that, For a layer in the precoding matrix where the second scaling factor is not equal to the second parameter, the second scaling factor corresponding to the layer is the minimum value between the second parameter and the third parameter.

8. The method according to claim 3, characterized in that, For each layer in the precoding matrix, the second scaling factor corresponding to the layer satisfies the following constraint: When the square of the first scaling factor corresponding to the beam of the layer is less than the first parameter, the second scaling factor corresponding to the layer is the minimum value of the first parameter and the fourth parameter. When the square of the first scaling factor corresponding to the beam type of the layer is equal to the first parameter, the second scaling factor corresponding to the layer is equal to the third parameter.

9. The method according to claim 3, characterized in that, The precoding matrix contains at most one beam whose first scaling factor is less than the first parameter; for each layer of the precoding matrix, the second scaling factor corresponding to the layer satisfies the following constraint relationship: When the square of the first scaling factor corresponding to the beam of the layer is less than the first parameter, the second scaling factor corresponding to the layer is the minimum value of the first parameter and the second parameter. When the square of the first scaling factor corresponding to the beam of the layer is equal to the first parameter, the second scaling factor corresponding to the layer is equal to the third parameter.

10. The method according to claim 3, characterized in that, The method further includes: The second scaling factor corresponding to each layer in the precoding matrix is ​​reported to the second node.

11. The method according to claim 10, characterized in that, The second scaling factor corresponding to each layer of the precoding matrix reported to the second node satisfies the following constraints: The second scaling factor corresponding to the layer is less than or equal to the second parameter; The sum of the target squares corresponding to each of the at least one beams is less than or equal to the number of layers in the precoding matrix; wherein, the target squares corresponding to a beam are the sum of the squares of the second scaling factors corresponding to each of the at least one layer of the beam.

12. The method according to any one of claims 6, 7, 8 or 9, characterized in that, The first parameter is used to indicate that the power of the layer is the average power distribution; the average power distribution is the ratio of the total power corresponding to the transmission of the signal to the number of layers in the precoding matrix.

13. The method according to any one of claims 6, 7, 9 or 11, characterized in that, The second parameter satisfies the following relationship: The second parameter has a corresponding relationship with the beam; The second parameter of a beam is determined based on the first scaling factor corresponding to the beam, the number of layers of all layers corresponding to the beam, and the number of layers of the precoding matrix.

14. The method according to any one of claims 7, 8 or 9, characterized in that, The third parameter satisfies the following relationship: The third parameter is determined based on the remaining allocation power, the target allocation layer number, and the total number of layers in the precoding matrix; the remaining allocation power is the difference between the total power of transmitting the signal and the actual power corresponding to all layers whose power is less than the average allocation power; the target allocation layer number is the number of layers in the precoding matrix excluding the layers whose power is less than the average allocation power.

15. The method according to claim 8, characterized in that, The fourth parameter satisfies the following relationship: The fourth parameter is determined based on the minimum first scaling factor corresponding to all beams in the precoding matrix, the number of layers corresponding to each of the at least one beam, and the number of layers in the precoding matrix.

16. The method according to claim 1, characterized in that, Each layer in the precoding matrix corresponds to at least one beam, and each of the at least one beam corresponds to a broadband amplitude factor, which satisfies the following: For each layer in the precoding matrix, the broadband amplitude factor corresponding to the layer is less than the first scaling factor corresponding to the beam of the layer.

17. The method according to claim 1, characterized in that, Each layer in the precoding matrix corresponds to at least one beam, and each of the at least one beam corresponds to a broadband amplitude factor, which satisfies the following: For the same beam in the precoding matrix, the sum of the squares of at least one broadband amplitude factor corresponding to the beam is less than the square of the first scaling factor corresponding to the beam.

18. The method according to claim 16 or 17, characterized in that, The method further includes: The power scaling factor is reported to the second node; the power scaling factor is used to scale the broadband amplitude factor in the precoding matrix.

19. The method according to claim 18, characterized in that, The power scaling factor is reported to the second node, satisfying the following relationship: the broadband amplitude factor adjusted by the power scaling factor is less than or equal to the first scaling factor of the beam corresponding to the broadband amplitude factor.

20. The method according to claim 18, characterized in that, The power scaling factor is reported to the second node, satisfying the following relationship: the sum of the squares of the broadband amplitude factors adjusted by the power scaling factor corresponding to the same beam in the precoding matrix is ​​less than or equal to the square of the first scaling factor of the beam.

21. The method according to claim 1, characterized in that, Each layer in the precoding matrix corresponds to: an amplitude factor corresponding to the polarization direction, a frequency domain compression amplitude factor of the beam corresponding to the layer, and a non-zero coefficient indicator factor; for each beam in the precoding matrix, the beam corresponds to one of the first scaling factors in a polarization direction.

22. The method according to claim 21, characterized in that, For each beam corresponding to each layer in the precoding matrix, the average power of the beam in one polarization direction is less than or equal to the square of the first scaling factor corresponding to the beam in that polarization direction.

23. The method according to claim 22, characterized in that, The average power of the beam in one polarization direction is less than or equal to the square of the first scaling factor corresponding to the beam in that polarization direction, satisfying the following formula: in, This represents the magnitude factor in one polarization direction. This represents the frequency domain compression amplitude factor corresponding to the beam. M represents the non-zero coefficient indicator parameter of the layer corresponding to the beam. v The number of non-zero coefficients in the layer is represented by , i is the identifier of the beam, and s is the number of non-zero coefficients in the layer. i,p This represents the first scaling factor corresponding to the beam in one polarization direction.

24. The method according to claim 1, characterized in that, Each layer in the precoding matrix corresponds to: the amplitude factor corresponding to the polarization direction, the frequency domain compression amplitude factor of the beam corresponding to the layer, and the non-zero coefficient indicator factor; The precoding matrix corresponds to at least one beam; The at least one beam corresponds to at least one of the first scaling factors.

25. The method according to claim 24, characterized in that, For each layer in the precoding matrix, the average power of each beam corresponding to the layer is less than or equal to the square of the first scaling factor corresponding to the beam.

26. The method according to claim 25, characterized in that, The average power of each beam corresponding to the layer is less than or equal to the square of the first scaling factor corresponding to the beam, satisfying the following formula: in, The magnitude factor represents a polarization direction. This represents the frequency domain compression amplitude factor of the beam corresponding to the layer. M represents the non-zero coefficient indicator parameter corresponding to the layer. v The number of non-zero coefficients in the layer is represented by , where i is the identifier of the beam corresponding to the layer, and s is the number of non-zero coefficients in the layer. i The first scaling factor represents the beam of the layer.

27. The method according to claim 24, characterized in that, For the same beam in the precoding matrix, the average power of the layer is less than or equal to the square of the first scaling factor corresponding to the beam.

28. The method according to claim 27, characterized in that, For layers corresponding to the same beam in the precoding matrix, the average power of the layer is less than or equal to the square of the first scaling factor corresponding to the beam, satisfying the following formula: in, The magnitude factor represents a polarization direction. This represents the frequency domain compression amplitude factor of the beam. M represents the non-zero coefficient indicator parameter corresponding to the layer. v The number of non-zero coefficients in the layer is represented by , i is the identifier of the beam, and s i The first scaling factor corresponding to the beam is indicated.

29. The method according to any one of claims 22-28, characterized in that, The method further includes: The power scaling factor corresponding to each layer in the precoding matrix is ​​reported to the second node; the power scaling factor is used to scale the amplitude corresponding to the layer.

30. The method according to claim 1, characterized in that, The method further includes: The system receives the reported configuration information sent by the second node; the reported configuration information is used to indicate the first scaling factor corresponding to the beam and / or the first scaling factor corresponding to the beam in a polarization direction.

31. A communication method, characterized in that, Applied to the second node, the method includes: The system receives precoding matrix indication information sent by a first node; the precoding matrix indicated by the precoding matrix indication information is determined based on a first scaling factor; the first scaling factor corresponds to a beam in the precoding matrix and is used to determine the transmit power of the beam. The signal is sent to the first node based on the precoding matrix.

32. A communication device, characterized in that, include: Memory and processor; Memory and processor are coupled; The memory is used to store instructions that can be executed by the processor; When the processor executes the instruction, it performs the method as described in any one of claims 1-30, or when it executes the instruction, it performs the method as described in claim 31.

33. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer instructions that, when executed on a computer, cause the computer to perform the method as described in any one of claims 1-30, or, when the instructions are executed, to perform the method as described in claim 31.

34. A computer program product, characterized in that, The computer program product includes computing technology program instructions, which, when executed by a processor, implement the method as described in any one of claims 1-30, or, when implemented, perform the method as described in claim 31.

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