Information transmission method and device, equipment and storage medium

Abstract

The application discloses an information transmission method and device, equipment and a storage medium, and relates to the field of mobile communication. The method comprises the following steps: a terminal sends channel state information to a network device, the channel state information comprises channel state information corresponding to at least two layers, or the channel state information comprises channel state information corresponding to at least two subbands, and the channel state information indicates the amplitude coefficient of each layer or subband, so that the network device can determine the difference between the amplitude coefficients of two layers or the difference between the amplitude coefficients of two subbands, that is, the terminal reports the channel state information, the parameter of the amplitude coefficient is added in the channel state information, the information amount that can be carried by the information is expanded, and because the terminal reports the difference between the amplitude coefficients of different layers or different subbands, the network device can obtain the difference between the amplitude coefficients of different layers or different subbands, and then communicates with the terminal based on the obtained amplitude coefficient, so that the reliability of communication is ensured.

Description

Technical Field

[0001] This application relates to the field of mobile communications, and in particular to an information transmission method, apparatus, device, and storage medium. Background Technology

[0002] In mobile communication systems, terminals can measure the channel to obtain channel state information for each port. By compressing the channel state information of each port and feeding it back to the network device, the network device can determine the relative amplitude value of each port based on the compressed channel state information. However, the amount of information determined based on the channel state information is small, resulting in poor communication reliability. Summary of the Invention

[0003] This application provides an information transmission method, apparatus, device, and storage medium. The channel state information reported by the terminal includes an amplitude coefficient parameter, expanding the amount of information that can be carried. Furthermore, because the terminal reports differences in amplitude coefficients between different layers or sub-bands, the network device can detect these differences and communicate with the terminal based on the obtained amplitude coefficients, ensuring communication reliability. The technical solution is as follows:

[0004] According to one aspect of this application, an information transmission method is provided, the method being executed by a terminal, the method comprising:

[0005] Send channel state information to network devices, the channel state information including channel state information corresponding to at least two layers, or the channel state information including channel state information corresponding to at least two sub-bands, the channel state information indicating the amplitude coefficient of each layer or each sub-band.

[0006] According to one aspect of this application, an information transmission method is provided, the method being performed by a network device, the method comprising:

[0007] The receiving terminal sends channel state information, which includes channel state information corresponding to at least two layers, or the channel state information includes channel state information corresponding to at least two sub-bands, and the channel state information indicates the amplitude coefficient of each layer or each sub-band.

[0008] According to one aspect of this application, an information transmission apparatus is provided, the apparatus comprising:

[0009] The transmitting module is used to transmit channel state information to the network device. The channel state information includes channel state information corresponding to at least two layers, or the channel state information includes channel state information corresponding to at least two sub-bands. The channel state information indicates the amplitude coefficient of each layer or each sub-band.

[0010] According to one aspect of this application, an information transmission apparatus is provided, the apparatus comprising:

[0011] A receiving module is used to receive channel state information sent by a terminal. The channel state information includes channel state information corresponding to at least two layers, or the channel state information includes channel state information corresponding to at least two sub-bands. The channel state information indicates the amplitude coefficient of each layer or each sub-band.

[0012] According to one aspect of this application, a terminal is provided, the terminal comprising: a processor; a transceiver connected to the processor; and a memory for storing executable instructions of the processor; wherein the processor is configured to load and execute the executable instructions to implement the information transmission method as described above.

[0013] According to one aspect of this application, a network device is provided, comprising: a processor; a transceiver connected to the processor; and a memory for storing executable instructions of the processor; wherein the processor is configured to load and execute the executable instructions to implement the information transmission method as described above.

[0014] According to one aspect of this application, a computer-readable storage medium is provided, in which executable program code is stored, which is loaded and executed by a processor to implement the information transmission method as described above.

[0015] In the solution provided in this application embodiment, the terminal reports the amplitude coefficients corresponding to at least two layers or at least two sub-bands to the network device, so that the network device can determine the difference in amplitude coefficients between the two layers or the difference in amplitude coefficients between the two sub-bands. That is to say, the channel state information reported by the terminal adds the amplitude coefficient parameter, expands the amount of information that can be carried, and since the terminal reports the difference in amplitude coefficients between different layers or different sub-bands, the network device can know the difference in amplitude coefficients between different layers or different sub-bands, and then communicate with the terminal based on the obtained amplitude coefficients to ensure the reliability of communication. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A block diagram of a communication system provided in an exemplary embodiment of this application is shown;

[0018] Figure 2 A flowchart illustrating an exemplary embodiment of the information transmission method provided in this application is shown;

[0019] Figure 3 A flowchart illustrating an exemplary embodiment of the information transmission method provided in this application is shown;

[0020] Figure 4 A flowchart illustrating an exemplary embodiment of the information transmission method provided in this application is shown;

[0021] Figure 5 A block diagram of an information transmission apparatus provided in an exemplary embodiment of this application is shown;

[0022] Figure 6 A block diagram of an information transmission apparatus provided in an exemplary embodiment of this application is shown;

[0023] Figure 7 A schematic diagram of the structure of a communication device provided in an exemplary embodiment of this application is shown. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0025] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. Unless otherwise indicated, the same numerals in different drawings denote the same or similar elements in the following description relating to the drawings. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0026] The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The singular forms “a,” “the,” and “the” used in this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0027] It should be understood that although the terms first, second, third, etc., may be used in this application to describe various information, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this application, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Depending on the context, for example, the word "if" as used herein may be interpreted as "when," "when," or "in response to determination."

[0028] It should be noted that the information (including but not limited to user device information, user personal information, etc.), data (including but not limited to data used for analysis, data stored, data displayed, etc.) and signals involved in this application are all authorized by the user or fully authorized by all parties, and the collection, use and processing of related data must comply with the relevant laws, regulations and standards of the relevant countries and regions.

[0029] The application scenarios of this application will be described below:

[0030] Figure 1 A block diagram of a communication system provided in an exemplary embodiment of this application is shown. The communication system may include a terminal 10 and a network device 20.

[0031] The number of terminals 10 is typically multiple, and one or more terminals 10 can be distributed within the cell managed by each network device 20. Terminals 10 may include various handheld devices, vehicle-mounted devices, wearable devices, computing devices, or other processing devices connected to a wireless modem, as well as various forms of user equipment (UE), mobile station (MS), etc. For ease of description, in this embodiment, the devices mentioned above are collectively referred to as terminals.

[0032] Network device 20 is a device deployed in an access network to provide wireless communication functionality to terminal 10. For ease of description, in this embodiment, the device providing wireless communication functionality to terminal 10 is collectively referred to as a network device. Network device 20 and terminal 10 can establish a connection via an air interface, thereby communicating through this connection, including signaling and data exchange. There can be multiple network devices 20, and two adjacent network devices 20 can communicate via wired or wireless means. Terminal 10 can switch between different network devices 20, that is, establish connections with different network devices 20.

[0033] The network device 20 may include various forms of macro base stations, micro base stations, relay stations, access points, etc. In systems employing different wireless access technologies, the name of the device with network equipment functions may differ; for example, in a 5G NR system, it is called gNodeB or gNB. As communication technologies evolve, the name "network device" may change.

[0034] Figure 2 This application illustrates a flowchart of an exemplary embodiment of an information transmission method provided, which can be exemplarily described as follows: Figure 1 The terminal and network device shown execute the method, which includes at least some of the following:

[0035] Step 201: The terminal sends channel state information to the network device. The channel state information includes channel state information corresponding to at least two layers, or the channel state information includes channel state information corresponding to at least two sub-bands. The channel state information indicates the amplitude coefficient of each layer or each sub-band.

[0036] In this embodiment of the application, the terminal can send channel state information corresponding to at least two layers or at least two sub-bands to the network device, and use the channel state information to indicate the amplitude coefficient of each layer or sub-band, so as to inform the network device of the amplitude coefficient of each layer or sub-band.

[0037] Here, "layer" refers to the number of layers transmitted by the terminal. The number of layers is defined as the RANK (rank) of the MIMO (Multiple Input Multiple Output) channel matrix. In other words, the number of layers in the terminal equals the number of RANK. When RANK is 1, the number of layers is 1, and when RANK is N, the number of layers is N. The amplitude coefficient indicates the amplitude of the signal transmitted in the layer or subband.

[0038] It should be noted that the channel state information in the embodiments of this application includes channel state information corresponding to at least two layers, or channel state information corresponding to at least two sub-bands. When the channel state information includes channel state information corresponding to at least two layers, the channel state information indicates the amplitude coefficient of each layer. When the channel state information includes channel state information corresponding to at least two sub-bands, the channel state information indicates the amplitude coefficient of each sub-band.

[0039] Step 202: The network device receives the channel status information sent by the terminal.

[0040] In the embodiments of this application, the network device receives channel state information sent by the terminal, and can determine the amplitude coefficient of each of at least two layers based on the channel state information, or determine the amplitude coefficient of each of at least two sub-bands based on the channel state information.

[0041] It should be noted that the steps executed by the terminal in the embodiments of this application can be implemented separately to form a new embodiment, and the steps executed by the network device can be implemented separately to form a new embodiment.

[0042] In the solution provided in this application embodiment, the terminal reports the amplitude coefficients corresponding to at least two layers or at least two sub-bands to the network device, so that the network device can determine the difference in amplitude coefficients between the two layers or the difference in amplitude coefficients between the two sub-bands. That is to say, the channel state information reported by the terminal adds the amplitude coefficient parameter, expands the amount of information that can be carried, and since the terminal reports the difference in amplitude coefficients between different layers or different sub-bands, the network device can know the difference in amplitude coefficients between different layers or different sub-bands, and then communicate with the terminal based on the obtained amplitude coefficients to ensure the reliability of communication.

[0043] exist Figure 2 Based on the illustrated embodiment, the terminal indicates the amplitude coefficient using vector information. That is, by carrying vector information in the channel state information, and then using this vector information to indicate the amplitude coefficient, including the following two cases:

[0044] The first type: The channel state information includes vector information corresponding to each layer, and the vector information indicates the amplitude coefficient of the layer.

[0045] In this embodiment, the channel state information includes vector information corresponding to each layer, that is, the vector information corresponding to each layer indicates the amplitude coefficient of that layer. Here, a layer is called a RANK, where RANK=1 corresponds to one layer, and a RANK value of N indicates support for N layers.

[0046] The second type: Channel state information includes vector information corresponding to each sub-band, and the vector information indicates the amplitude coefficient of the sub-band.

[0047] In this embodiment of the application, the channel state information includes vector information corresponding to each sub-band, that is, the vector information corresponding to each sub-band indicates the amplitude coefficient of that sub-band.

[0048] Optionally, the vector information includes eigenvectors or singular vectors. When the vector information includes eigenvectors, the amplitude coefficients are indicated by the eigenvectors. When the vector information includes singular vectors, the amplitude coefficients are indicated by the singular vectors.

[0049] In some embodiments, the vector information includes first bit information, which corresponds to the elements in the vector information.

[0050] In this embodiment, the first bit information included in the vector information indicates the numerical value of the elements included in the vector information. Since the first bit information corresponds to the elements in the vector information, the value of the element in the vector information can be determined through the first bit information and the correspondence.

[0051] For example, if the vector information includes elements a, b, c, and d, then the first bit information means that 000 indicates that the values ​​corresponding to a, b, c, and d are 1, 2, 5, and 3 respectively; 001 indicates that the values ​​corresponding to a, b, c, and d are 3, 4, 1, and 3 respectively. Alternatively, the first bit information may have other correspondences with the elements.

[0052] In another embodiment of this application, multiple vectors can be combined into a matrix. The vector information includes a first bit information used to indicate the matrix combined from the multiple vectors, and the first bit information has a correspondence with the elements in the matrix.

[0053] It should be noted that the elements in the vector information in the embodiments of this application include at least one amplitude coefficient corresponding to a port, or the elements in the vector information include at least one amplitude coefficient corresponding to a beam.

[0054] In this context, each layer includes at least one port, and the vector information corresponding to each layer is composed of the amplitude coefficients of at least one port included in that layer. In other words, the value of each element included in the vector information is the amplitude coefficient of a port.

[0055] Each sub-band refers to a sub-band that includes at least one beam, and the vector information corresponding to each sub-band is composed of the amplitude coefficients of the at least one beam included in that sub-band. In other words, the value of each element included in the vector information is the amplitude coefficient of a beam.

[0056] Here, "port" refers to the CSI-RS (Channel State Information Reference Signal) port, or the antenna port. "Beam" refers to the beam.

[0057] It should be noted that in this embodiment, when the terminal feeds back channel status information, it does so based on AI.

[0058] In some embodiments, when the terminal feeds back channel state information, it normalizes the vector information of the channel state information and feeds back the normalized channel state information.

[0059] In the solution provided in this application embodiment, the amplitude coefficient corresponding to each layer or sub-band is indicated by the vector information included in the channel state information, so as to facilitate the terminal to report the amplitude coefficients corresponding to at least two layers or at least two sub-bands. Since the terminal reports the amplitude coefficients of the layers or sub-bands, the network device can know the amplitude coefficients of the relevant layers or sub-bands, and then communicate with the terminal based on the obtained amplitude coefficients, thereby improving the reliability of communication.

[0060] Based on the above embodiments, the amplitude coefficient can be determined according to the length of the vector information. The following explains how to determine the amplitude coefficient.

[0061] In some embodiments, the magnitude coefficient of each of the at least two layers is the length of the vector information corresponding to the layer.

[0062] In the embodiments of this application, when determining the amplitude coefficient of each of the at least two layers, the length of the vector information corresponding to each layer is determined as the amplitude coefficient of the layer, and the amplitude coefficient of each layer is associated with the amplitude coefficient corresponding to at least one port included in the vector information.

[0063] Optionally, in response to the vector information being a real number vector, the length of the vector information is the sum of the absolute values ​​of each element in the real number vector.

[0064] For example, the length of a vector [a, b, c, d] is the sum of the absolute values ​​of a, b, c, and d. However, for channel state information feedback, the vector is normalized to have a length of 1, which is achieved by dividing each element of the vector by its length.

[0065] Optionally, in response to the vector information being a complex vector, the length of the vector information is the sum of the moduli of each element in the complex vector.

[0066] For example, the length of a vector [a+i*a', b+i*b', c+i*c', d+i*d'] is the sum of the moduli of each element; that is, the sum is the square root of the sum of the squares of a, a', b, b', c, and c'. However, for channel state information feedback, the vector is normalized to have a length of 1, which is achieved by dividing the real and imaginary parts of each element by the length of the vector.

[0067] In other embodiments, the amplitude coefficient of each of the at least two sub-bands is the length of the vector information corresponding to the sub-band, and the amplitude coefficient of each sub-band is associated with the amplitude coefficient of at least one beam included in the vector information.

[0068] In this embodiment of the application, when determining the amplitude coefficient of each sub-band in at least two sub-bands, the length of the vector information corresponding to each sub-band is determined as the amplitude coefficient of that sub-band.

[0069] In addition, the determination of the amplitude coefficient of each sub-band is similar to the determination of the amplitude coefficient of each layer in the above embodiment, and will not be repeated here.

[0070] It should be noted that in this embodiment, the length of the vector information indicates the difference in amplitude coefficients between different layers or subbands. However, for feedback channel state information, the vectors are normalized. During normalization, since the length of the vector information indicates the amplitude coefficient, the length of the vector with the largest amplitude coefficient is normalized to 1, and this normalized length of 1 is used as the amplitude coefficient of the vector with the largest amplitude coefficient. For other vector information with amplitude coefficients smaller than the amplitude coefficient of the vector with the largest amplitude coefficient, the normalized length of the other vector information is determined according to the ratio of its amplitude coefficient to that of the vector with the largest amplitude coefficient, and this normalized length is used as the amplitude coefficient of the other vector information. Therefore, the network device can determine the difference in amplitude coefficients between different vectors based on the first bit information in the vector information.

[0071] In some embodiments, the length of the vector information with the largest amplitude coefficient is normalized to 1, and the normalized length 1 is used as the amplitude coefficient of the vector information. That is, the amplitude coefficient of the vector information with the largest amplitude coefficient is the length 1 of the vector information. For other vector information, the ratio of the amplitude coefficient of the other vector information to the amplitude coefficient of the vector information with the largest amplitude coefficient is used as the normalized length of the other vector information, and the normalized length of the other vector information is used as the amplitude coefficient of the other vector information.

[0072] For example, let's take two vector pieces of information as an example. These two vector pieces of information are vector 1 and vector 2. The amplitude coefficient of vector 1 is greater than that of vector 2. For vector 1, the length is normalized to 1, while the length of vector 2 is normalized to 1 / L, where L is the ratio of the amplitude coefficient of vector 1 to that of vector 2. In other words, this embodiment of the application indicates the amplitude coefficient of different vectors by the ratio of the lengths of the two vector pieces of information, and the difference in amplitude coefficients between different vector pieces of information can be determined by the first bit information indicating the vector pieces of information.

[0073] In the solution provided in this application embodiment, the amplitude coefficient of the layer or sub-band is determined by the length of the vector information, which saves signaling overhead and improves the reliability of communication.

[0074] Based on the above embodiments, the amplitude coefficient can be determined according to the second bit information included in the channel state information. The following explains how to determine the amplitude coefficient.

[0075] In some embodiments, the channel state information includes second bit information, and the amplitude coefficient of each of at least two layers is indicated by the second bit information.

[0076] In this embodiment, the terminal indicates the amplitude coefficient of each layer using the second bit of information in the channel state information.

[0077] Optionally, the second bit information indicates the difference between the amplitude coefficient of the second layer and the amplitude coefficient of the first layer, where the amplitude coefficient of the first layer is 1.

[0078] The amplitude coefficient of the first layer is determined by the communication protocol or preset by the terminal; this application embodiment does not impose any limitations on this.

[0079] For example, the first layer includes layer 1, the second layer includes layer 2 and layer 3. If the difference value indicated by the second bit information of layer 2 is 0.2, then the amplitude coefficient of layer 2 is 0.2 times that of layer 1. If the difference value indicated by the second bit information of layer 3 is 0.1, then the amplitude coefficient of layer 3 is 0.1 times that of layer 1.

[0080] Optionally, the second bit information directly indicates the amplitude coefficient of each layer. For example, the second bit information indicates the amplitude coefficients of three layers: layer 1, layer 2, and layer 3. The second bit information indicates that the amplitude coefficient of layer 1 is 1, the amplitude coefficient of layer 2 is 0.8, and the amplitude coefficient of layer 3 is 0.5.

[0081] In other embodiments, the channel state information includes a second bit of information, wherein the amplitude coefficient of each subband in at least two subbands is indicated by the second bit of information.

[0082] In this embodiment of the application, the terminal indicates the amplitude coefficient of each subband through the second bit of information in the channel state information.

[0083] Optionally, the second bit information indicates the difference between the amplitude coefficient of the second subband and the amplitude coefficient of the first subband, wherein the amplitude coefficient of the first subband is 1.

[0084] The amplitude coefficient of the first sub-band is determined by the communication protocol or preset by the terminal; this application embodiment does not impose any limitations on this.

[0085] For example, the first subband includes subband 1, the second subband includes subband 2 and subband 3, the difference value indicated by the second bit information corresponding to subband 2 is 0.2, then the amplitude coefficient of subband 2 is 0.2 times that of subband 1, the difference value indicated by the second bit information corresponding to subband 3 is 0.1, then the amplitude coefficient of subband 3 is 0.1 times that of subband 1.

[0086] The second bit information in this embodiment is similar to that in the above embodiments, and will not be described again here.

[0087] In the solution provided in this application embodiment, by adding a second bit of information to the channel state information, the amplitude coefficient of the indication layer or sub-band is improved, thereby ensuring the reliability of communication.

[0088] It should be noted that the channel state information in this application embodiment may include not only the second bit information, but also the first bit information in the above embodiment.

[0089] The first bit information is similar to that in the above embodiment, and will not be described again here.

[0090] In the solution provided by the embodiments of this application, the network device can not only determine the vector information indicated by the first bit information, and then determine the amplitude coefficient of each port or beam based on the amplitude coefficient indicated by the elements of the vector information, but also determine the amplitude coefficient of different layers or different sub-bands indicated by the second bit information. This allows the network device to refer to more information for communication with the terminal based on the amplitude coefficient of the layer or sub-band, as well as the amplitude coefficient of the ports included in the layer or the beams included in the sub-band, thereby further improving communication reliability.

[0091] exist Figure 2 Based on the embodiment shown, the terminal carries a third bit of information in the channel state information, which indicates the CQI (Channel Quality Indication) corresponding to each of at least two layers.

[0092] In this embodiment of the application, the terminal not only reports the amplitude coefficient of each layer, but also reports the CQI of each layer, and the terminal indicates the CQI of each layer by carrying a third bit of information in the channel state information.

[0093] Optionally, the third bit indicates the absolute value of the CQI corresponding to each layer.

[0094] Optionally, the third bit information indicates the difference between the CQI of the second layer and the CQI of the first layer, where the CQI of the first layer is the absolute value of the CQI.

[0095] For example, the product or sum of the difference value of the second layer CQI and the absolute value of the first layer CQI is determined as the value of the second layer CQI.

[0096] For example, the second-layer CQI includes a first CQI, a second CQI, and a third CQI. If the difference value of the third bit information indicated by the first CQI is 0.4, then the first CQI is the product or sum of 0.4 and the absolute value of the first-layer CQI. If the difference value of the third bit information indicated by the second CQI is 0.5, then the first CQI is the product or sum of 0.5 and the absolute value of the first-layer CQI. If the difference value of the third bit information indicated by the third CQI is 0.7, then the first CQI is the product or sum of 0.7 and the absolute value of the first-layer CQI.

[0097] After receiving the channel state information sent by the terminal, the network device can determine the CQI corresponding to each layer based on the third bit information included in the channel state information.

[0098] The network device determines the absolute value of the first-layer CQI based on the third bit information, and can also determine the difference between the second-layer CQI and the first-layer CQI. Therefore, based on the difference between each second-layer CQI and the absolute value of the first-layer CQI, the CQI corresponding to each layer is determined.

[0099] Furthermore, the method for determining the CQI of the second layer is similar to that described above, and will not be repeated here.

[0100] In the solution provided in this application embodiment, the terminal indicates the CQI corresponding to each layer by carrying a third bit of information in the channel state information, which improves the amount of information transmission. Furthermore, the CQI can indicate the channel quality, so that the network device can perform data transmission based on the CQI, thus ensuring the reliability of communication.

[0101] exist Figure 2 Based on the embodiment shown, the terminal carries a third bit of information in the channel state information, which indicates the CQI corresponding to each of at least two subbands.

[0102] In this embodiment of the application, the terminal not only reports the amplitude coefficient of each sub-band, but also reports the CQI of each sub-band. Furthermore, the terminal indicates the CQI of each sub-band by carrying a third bit of information in the channel state information.

[0103] Optionally, the third bit indicates the absolute value of the CQI corresponding to each subband.

[0104] Optionally, the third bit information indicates the difference between the CQI of the second subband and the CQI of the first subband, where the CQI of the first subband is the absolute value of the CQI.

[0105] For example, the value of the CQI of the second sub-band is determined by the product or sum of the difference value of the CQI of the second sub-band and the absolute value of the CQI of the first sub-band.

[0106] For example, the CQI of the second sub-band includes a first CQI, a second CQI, and a third CQI. If the difference value indicated by the third bit information corresponding to the first CQI is 0.4, then the first CQI is the product or sum of 0.4 and the absolute value of the first sub-band CQI. If the difference value indicated by the third bit information corresponding to the second CQI is 0.5, then the first CQI is the product or sum of 0.5 and the absolute value of the first sub-band CQI. If the difference value indicated by the third bit information corresponding to the third CQI is 0.7, then the first CQI is the product or sum of 0.7 and the absolute value of the first sub-band CQI.

[0107] After receiving the channel state information sent by the terminal, the network device determines the CQI corresponding to each subband based on the third bit information included in the channel state information.

[0108] Once the network device receives the third bit of information, it can determine the absolute value of the CQI of the first sub-band, and also determine the difference between the CQI of the second sub-band and the CQI of the first sub-band. Therefore, based on the difference between the CQI of each sub-band and the absolute value of the CQI of the first sub-band, the CQI corresponding to each sub-band is determined.

[0109] Furthermore, the method for determining the CQI of the second sub-band is similar to that described above, and will not be repeated here.

[0110] In the solution provided in this application embodiment, the terminal indicates the CQI corresponding to each sub-band by carrying a third bit of information in the channel state information, thereby increasing the amount of information transmitted. Furthermore, the CQI can indicate the channel quality, so that the network device can transmit data based on the CQI, thereby ensuring the reliability of communication.

[0111] It should be noted that the above embodiments can be split into new embodiments, or combined with other embodiments to form new embodiments. This application does not limit the combination of embodiments.

[0112] Figure 3 A flowchart illustrating an exemplary embodiment of the information transmission method provided in this application is shown. See also: Figure 3 The method includes:

[0113] Step 301: The terminal sends channel state information to the network device. The channel state information includes channel state information corresponding to at least two layers, or the channel state information includes channel state information corresponding to at least two sub-bands. The channel state information indicates the amplitude coefficient of each layer or each sub-band.

[0114] In this embodiment of the application, the terminal can send channel state information corresponding to at least two layers or at least two sub-bands to the network device, and use the channel state information to indicate the amplitude coefficient of each layer or sub-band, so as to inform the network device of the amplitude coefficient of each layer or sub-band.

[0115] Here, "layer" refers to the number of layers transmitted by the terminal. The number of layers is defined as the RANK (rank) of the MIMO channel matrix. In other words, the number of layers in the terminal equals the number of RANK. When RANK is 1, the number of layers is 1, and when RANK is N, the number of layers is N. The amplitude coefficient indicates the amplitude of the signal transmitted in the layer or subband.

[0116] It should be noted that the channel state information in the embodiments of this application includes channel state information corresponding to at least two layers, or channel state information corresponding to at least two sub-bands. When the channel state information includes channel state information corresponding to at least two layers, the channel state information indicates the amplitude coefficient of each layer. When the channel state information includes channel state information corresponding to at least two sub-bands, the channel state information indicates the amplitude coefficient of each sub-band.

[0117] By carrying vector information in the channel state information, and then using this vector information to indicate the amplitude coefficient, there are two cases:

[0118] The first type: The channel state information includes vector information corresponding to each layer, and the vector information indicates the amplitude coefficient of the layer.

[0119] In this embodiment, the channel state information includes vector information corresponding to each layer, that is, the vector information corresponding to each layer indicates the amplitude coefficient of that layer. Here, a layer is called a RANK, where RANK=1 corresponds to one layer, and a RANK value of N indicates support for N layers.

[0120] The second type: Channel state information includes vector information corresponding to each sub-band, and the vector information indicates the amplitude coefficient of the sub-band.

[0121] In this embodiment of the application, the channel state information includes vector information corresponding to each sub-band, that is, the vector information corresponding to each sub-band indicates the amplitude coefficient of that sub-band.

[0122] Optionally, the vector information includes eigenvectors or singular vectors. When the vector information includes eigenvectors, the amplitude coefficients are indicated by the eigenvectors. When the vector information includes singular vectors, the amplitude coefficients are indicated by the singular vectors.

[0123] In some embodiments, the vector information includes first bit information, and the first bit information corresponds to the elements in the vector information.

[0124] In this embodiment, the first bit information included in the vector information indicates the numerical value of the elements included in the vector information. Since the first bit information corresponds to the elements in the vector information, the value of the element in the vector information can be determined through the first bit information and the correspondence.

[0125] For example, if the vector information includes elements a, b, c, and d, then the first bit information means that 000 indicates that the values ​​corresponding to a, b, c, and d are 1, 2, 5, and 3 respectively; 001 indicates that the values ​​corresponding to a, b, c, and d are 3, 4, 1, and 3 respectively. Alternatively, the first bit information may have other correspondences with the elements.

[0126] In another embodiment of this application, multiple vectors can be combined into a matrix. The vector information includes a first bit information used to indicate the matrix combined from the multiple vectors, and the first bit information has a correspondence with the elements in the matrix.

[0127] In some embodiments, the elements in the vector information include at least one amplitude coefficient corresponding to a port, or the elements in the vector information include at least one amplitude coefficient corresponding to a beam.

[0128] In this context, each layer includes at least one port, and the vector information corresponding to each layer is composed of the amplitude coefficients of at least one port included in that layer. In other words, the value of each element included in the vector information is the amplitude coefficient of a port.

[0129] Each sub-band refers to a sub-band that includes at least one beam, and the vector information corresponding to each sub-band is composed of the amplitude coefficients of the at least one beam included in that sub-band. In other words, the value of each element included in the vector information is the amplitude coefficient of a beam.

[0130] Here, "port" refers to a CSI-RS (Channel State Information Reference Signal) port, or an antenna port. "Beam" refers to a beam.

[0131] In some embodiments, the magnitude coefficient of each of the at least two layers is the length of the vector information corresponding to the layer.

[0132] In the embodiments of this application, when determining the amplitude coefficient of each of the at least two layers, the length of the vector information corresponding to each layer is determined as the amplitude coefficient of the layer, and the amplitude coefficient of each layer is associated with the amplitude coefficient corresponding to at least one port included in the vector information.

[0133] Optionally, in response to the vector information being a real number vector, the length of the vector information is the sum of the absolute values ​​of each element in the real number vector.

[0134] For example, the length of a vector [a, b, c, d] is the sum of the absolute values ​​of a, b, c, and d. However, for channel state information feedback, the vector is normalized to have a length of 1, which is achieved by dividing each element of the vector by its length.

[0135] Optionally, in response to the vector information being a complex vector, the length of the vector information is the sum of the moduli of each element in the complex vector.

[0136] For example, the length of a vector [a+i*a', b+i*b', c+i*c', d+i*d'] is the sum of the moduli of each element; that is, the sum is the square root of the sum of the squares of a, a', b, b', c, and c'. However, for channel state information feedback, the vector is normalized to have a length of 1, which is achieved by dividing the real and imaginary parts of each element by the length of the vector.

[0137] In other embodiments, the amplitude coefficient of each of the at least two sub-bands is the length of the vector information corresponding to the sub-band, and the amplitude coefficient of each sub-band is associated with the amplitude coefficient of at least one beam included in the vector information.

[0138] In this embodiment of the application, when determining the amplitude coefficient of each sub-band in at least two sub-bands, the length of the vector information corresponding to each sub-band is determined as the amplitude coefficient of that sub-band.

[0139] In addition, the determination of the amplitude coefficient of each sub-band is similar to the determination of the amplitude coefficient of each layer in the above embodiment, and will not be repeated here.

[0140] It should be noted that in this embodiment, the length of the vector information indicates the difference in amplitude coefficients between different layers or subbands. However, for feedback channel state information, the vectors are normalized. During normalization, since the length of the vector information indicates the amplitude coefficient, the length of the vector with the largest amplitude coefficient is normalized to 1, and this normalized length of 1 is used as the amplitude coefficient of the vector with the largest amplitude coefficient. For other vector information with amplitude coefficients smaller than the amplitude coefficient of the vector with the largest amplitude coefficient, the normalized length of the other vector information is determined according to the ratio of its amplitude coefficient to that of the vector with the largest amplitude coefficient, and this normalized length is used as the amplitude coefficient of the other vector information. Therefore, the network device can determine the difference in amplitude coefficients between different vectors based on the first bit information in the vector information.

[0141] In some embodiments, the length of the vector information with the largest amplitude coefficient is normalized to 1, and the normalized length 1 is used as the amplitude coefficient of the vector information. That is, the amplitude coefficient of the vector information with the largest amplitude coefficient is the length 1 of the vector information. For other vector information, the ratio of the amplitude coefficient of the other vector information to the amplitude coefficient of the vector information with the largest amplitude coefficient is used as the normalized length of the other vector information, and the normalized length of the other vector information is used as the amplitude coefficient of the other vector information.

[0142] For example, let's take two vector pieces of information as an example. These two vector pieces of information are vector 1 and vector 2. The amplitude coefficient of vector 1 is greater than that of vector 2. For vector 1, the length is normalized to 1, while the length of vector 2 is normalized to 1 / L, where L is the ratio of the amplitude coefficient of vector 1 to that of vector 2. In other words, this embodiment of the application indicates the amplitude coefficient of different vectors by the ratio of the lengths of the two vector pieces of information, and the difference in amplitude coefficients between different vector pieces of information can be determined by the first bit information indicating the vector pieces of information.

[0143] In some embodiments, the channel state information includes second bit information, and the amplitude coefficient of each of at least two layers is indicated by the second bit information.

[0144] In this embodiment, the terminal indicates the amplitude coefficient of each layer using the second bit of information in the channel state information.

[0145] Optionally, the second bit information indicates the difference between the amplitude coefficient of the second layer and the amplitude coefficient of the first layer, where the amplitude coefficient of the first layer is 1.

[0146] The amplitude coefficient of the first layer is determined by the communication protocol or preset by the terminal; this application embodiment does not impose any limitations on this.

[0147] For example, the first layer includes layer 1, the second layer includes layer 2 and layer 3. If the difference value indicated by the second bit information of layer 2 is 0.2, then the amplitude coefficient of layer 2 is 0.2 times that of layer 1. If the difference value indicated by the second bit information of layer 3 is 0.1, then the amplitude coefficient of layer 3 is 0.1 times that of layer 1.

[0148] Optionally, the second bit information directly indicates the amplitude coefficient of each layer. For example, the second bit information indicates the amplitude coefficients of three layers: layer 1, layer 2, and layer 3. The second bit information indicates that the amplitude coefficient of layer 1 is 1, the amplitude coefficient of layer 2 is 0.8, and the amplitude coefficient of layer 3 is 0.5.

[0149] In other embodiments, the channel state information includes a second bit of information, wherein the amplitude coefficient of each subband in at least two subbands is indicated by the second bit of information.

[0150] In this embodiment of the application, the terminal indicates the amplitude coefficient of each subband through the second bit of information in the channel state information.

[0151] Optionally, the second bit information indicates the difference between the amplitude coefficient of the second subband and the amplitude coefficient of the first subband, wherein the amplitude coefficient of the first subband is 1.

[0152] The amplitude coefficient of the first sub-band is determined by the communication protocol or preset by the terminal; this application embodiment does not impose any limitations on this.

[0153] For example, the first subband includes subband 1, the second subband includes subband 2 and subband 3, the difference value indicated by the second bit information corresponding to subband 2 is 0.2, then the amplitude coefficient of subband 2 is 0.2 times that of subband 1, the difference value indicated by the second bit information corresponding to subband 3 is 0.1, then the amplitude coefficient of subband 3 is 0.1 times that of subband 1.

[0154] It should be noted that the channel state information in this application embodiment may include not only the second bit information, but also the first bit information in the above embodiment.

[0155] The first bit information is similar to that in the above embodiment, and will not be described again here.

[0156] In the solution provided by the embodiments of this application, the network device can not only determine the vector information indicated by the first bit information, and then determine the amplitude coefficient of each port or beam based on the amplitude coefficient indicated by the elements of the vector information, but also determine the amplitude coefficient of different layers or different sub-bands indicated by the second bit information. This allows the network device to refer to more information for communication with the terminal based on the amplitude coefficient of the layer or sub-band, as well as the amplitude coefficient of the ports included in the layer or the beams included in the sub-band, thereby further improving communication reliability.

[0157] In some embodiments, the terminal carries a third bit of information in the channel state information, through which the third bit of information indicates the CQI corresponding to each of at least two layers.

[0158] In this embodiment of the application, the terminal not only reports the amplitude coefficient of each layer, but also reports the CQI of each layer, and the terminal indicates the CQI of each layer by carrying a third bit of information in the channel state information.

[0159] Optionally, the third bit indicates the absolute value of the CQI corresponding to each layer.

[0160] Optionally, the third bit information indicates the difference between the CQI of the second layer and the CQI of the first layer, where the CQI of the first layer is the absolute value of the CQI.

[0161] For example, the value of the second-layer CQI is determined by the product or sum of the difference value of the second-layer CQI and the absolute value of the first-layer CQI.

[0162] For example, the second-layer CQI includes a first CQI, a second CQI, and a third CQI. If the difference value of the third bit information indicated by the first CQI is 0.4, then the first CQI is the product or sum of 0.4 and the absolute value of the first-layer CQI. If the difference value of the third bit information indicated by the second CQI is 0.5, then the first CQI is the product or sum of 0.5 and the absolute value of the first-layer CQI. If the difference value of the third bit information indicated by the third CQI is 0.7, then the first CQI is the product or sum of 0.7 and the absolute value of the first-layer CQI.

[0163] After receiving the channel state information sent by the terminal, the network device can determine the CQI corresponding to each layer based on the third bit information included in the channel state information.

[0164] The network device determines the absolute value of the first-layer CQI based on the third bit information, and can also determine the difference between the second-layer CQI and the first-layer CQI. Therefore, based on the difference between each second-layer CQI and the absolute value of the first-layer CQI, the CQI corresponding to each layer is determined.

[0165] Furthermore, the method for determining the CQI of the second layer is similar to that described above, and will not be repeated here.

[0166] In the solution provided in this application embodiment, the terminal indicates the CQI corresponding to each layer by carrying a third bit of information in the channel state information, which improves the amount of information transmission. Furthermore, the CQI can indicate the channel quality, so that the network device can perform data transmission based on the CQI, thus ensuring the reliability of communication.

[0167] exist Figure 2 Based on the embodiment shown, the terminal carries a third bit of information in the channel state information, which indicates the CQI corresponding to each of at least two subbands.

[0168] In this embodiment of the application, the terminal not only reports the amplitude coefficient of each sub-band, but also reports the CQI of each sub-band. Furthermore, the terminal indicates the CQI of each sub-band by carrying a third bit of information in the channel state information.

[0169] Optionally, the third bit indicates the absolute value of the CQI corresponding to each subband.

[0170] Optionally, the third bit information indicates the difference between the CQI of the second subband and the CQI of the first subband, where the CQI of the first subband is the absolute value of the CQI.

[0171] For example, the value of the CQI of the second sub-band is determined by the product or sum of the difference value of the CQI of the second sub-band and the absolute value of the CQI of the first sub-band.

[0172] For example, the CQI of the second sub-band includes a first CQI, a second CQI, and a third CQI. If the difference value indicated by the third bit information corresponding to the first CQI is 0.4, then the first CQI is the product or sum of 0.4 and the absolute value of the first sub-band CQI. If the difference value indicated by the third bit information corresponding to the second CQI is 0.5, then the first CQI is the product or sum of 0.5 and the absolute value of the first sub-band CQI. If the difference value indicated by the third bit information corresponding to the third CQI is 0.7, then the first CQI is the product or sum of 0.7 and the absolute value of the first sub-band CQI.

[0173] After receiving the channel state information sent by the terminal, the network device determines the CQI corresponding to each subband based on the third bit information included in the channel state information.

[0174] Once the network device receives the third bit of information, it can determine the absolute value of the CQI of the first sub-band, and also determine the difference between the CQI of the second sub-band and the CQI of the first sub-band. Therefore, based on the difference between the CQI of each sub-band and the absolute value of the CQI of the first sub-band, the CQI corresponding to each sub-band is determined.

[0175] Furthermore, the method for determining the CQI of the second sub-band is similar to that described above, and will not be repeated here.

[0176] It should be noted that the steps performed in this embodiment are similar to those performed in the above embodiments, and will not be repeated here.

[0177] Figure 4 A flowchart illustrating an exemplary embodiment of the information transmission method provided in this application is shown. See also: Figure 4 The method includes:

[0178] Step 401: The network device receives channel state information sent by the terminal. The channel state information includes channel state information corresponding to at least two layers, or the channel state information includes channel state information corresponding to at least two sub-bands. The channel state information indicates the amplitude coefficient of each layer or each sub-band.

[0179] In this embodiment of the application, the terminal can send channel state information corresponding to at least two layers or at least two sub-bands to the network device, and use the channel state information to indicate the amplitude coefficient of each layer or sub-band, so as to inform the network device of the amplitude coefficient of each layer or sub-band.

[0180] Here, "layer" refers to the number of layers transmitted by the terminal. The number of layers is defined as the RANK (rank) of the MIMO channel matrix. In other words, the number of layers in the terminal equals the number of RANK. When RANK is 1, the number of layers is 1, and when RANK is N, the number of layers is N. The amplitude coefficient indicates the amplitude of the signal transmitted in the layer or subband.

[0181] It should be noted that the channel state information in the embodiments of this application includes channel state information corresponding to at least two layers, or channel state information corresponding to at least two sub-bands. When the channel state information includes channel state information corresponding to at least two layers, the channel state information indicates the amplitude coefficient of each layer. When the channel state information includes channel state information corresponding to at least two sub-bands, the channel state information indicates the amplitude coefficient of each sub-band.

[0182] By carrying vector information in the channel state information, and then using this vector information to indicate the amplitude coefficient, there are two cases:

[0183] The first type: The channel state information includes vector information corresponding to each layer, and the vector information indicates the amplitude coefficient of the layer.

[0184] In this embodiment, the channel state information includes vector information corresponding to each layer, that is, the vector information corresponding to each layer indicates the amplitude coefficient of that layer. Here, a layer is called a RANK, where RANK=1 corresponds to one layer, and a RANK value of N indicates support for N layers.

[0185] The second type: Channel state information includes vector information corresponding to each sub-band, and the vector information indicates the amplitude coefficient of the sub-band.

[0186] In this embodiment of the application, the channel state information includes vector information corresponding to each sub-band, that is, the vector information corresponding to each sub-band indicates the amplitude coefficient of that sub-band.

[0187] Optionally, the vector information includes eigenvectors or singular vectors. When the vector information includes eigenvectors, the amplitude coefficients are indicated by the eigenvectors. When the vector information includes singular vectors, the amplitude coefficients are indicated by the singular vectors.

[0188] In some embodiments, the vector information includes first bit information, and the first bit information corresponds to the elements in the vector information.

[0189] In this embodiment, the first bit information included in the vector information indicates the numerical value of the elements included in the vector information. Since the first bit information corresponds to the elements in the vector information, the value of the element in the vector information can be determined through the first bit information and the correspondence.

[0190] For example, if the vector information includes elements a, b, c, and d, then the first bit information means that 000 indicates that the values ​​corresponding to a, b, c, and d are 1, 2, 5, and 3 respectively; 001 indicates that the values ​​corresponding to a, b, c, and d are 3, 4, 1, and 3 respectively. Alternatively, the first bit information may have other correspondences with the elements.

[0191] In another embodiment of this application, multiple vectors can be combined into a matrix. The vector information includes a first bit information used to indicate the matrix combined from the multiple vectors, and the first bit information has a correspondence with the elements in the matrix.

[0192] In some embodiments, the elements in the vector information include at least one amplitude coefficient corresponding to a port, or the elements in the vector information include at least one amplitude coefficient corresponding to a beam.

[0193] In this context, each layer includes at least one port, and the vector information corresponding to each layer is composed of the amplitude coefficients of at least one port included in that layer. In other words, the value of each element included in the vector information is the amplitude coefficient of a port.

[0194] Each sub-band refers to a sub-band that includes at least one beam, and the vector information corresponding to each sub-band is composed of the amplitude coefficients of the at least one beam included in that sub-band. In other words, the value of each element included in the vector information is the amplitude coefficient of a beam.

[0195] Here, "port" refers to a CSI-RS (Channel State Information Reference Signal) port, or an antenna port. "Beam" refers to a beam.

[0196] In some embodiments, the magnitude coefficient of each of the at least two layers is the length of the vector information corresponding to the layer.

[0197] In the embodiments of this application, when determining the amplitude coefficient of each of the at least two layers, the length of the vector information corresponding to each layer is determined as the amplitude coefficient of the layer, and the amplitude coefficient of each layer is associated with the amplitude coefficient corresponding to at least one port included in the vector information.

[0198] Optionally, in response to the vector information being a real number vector, the length of the vector information is the sum of the absolute values ​​of each element in the real number vector.

[0199] For example, the length of a vector [a, b, c, d] is the sum of the absolute values ​​of a, b, c, and d. However, for channel state information feedback, the vector is normalized to have a length of 1, which is achieved by dividing each element of the vector by its length.

[0200] Optionally, in response to the vector information being a complex vector, the length of the vector information is the sum of the moduli of each element in the complex vector.

[0201] For example, the length of a vector [a+i*a', b+i*b', c+i*c', d+i*d'] is the sum of the moduli of each element; that is, the sum is the square root of the sum of the squares of a, a', b, b', c, and c'. However, for channel state information feedback, the vector is normalized to have a length of 1, which is achieved by dividing the real and imaginary parts of each element by the length of the vector.

[0202] In other embodiments, the amplitude coefficient of each of the at least two sub-bands is the length of the vector information corresponding to the sub-band, and the amplitude coefficient of each sub-band is associated with the amplitude coefficient of at least one beam included in the vector information.

[0203] In this embodiment of the application, when determining the amplitude coefficient of each sub-band in at least two sub-bands, the length of the vector information corresponding to each sub-band is determined as the amplitude coefficient of that sub-band.

[0204] In addition, the determination of the amplitude coefficient of each sub-band is similar to the determination of the amplitude coefficient of each layer in the above embodiment, and will not be repeated here.

[0205] It should be noted that in this embodiment, the length of the vector information indicates the difference in amplitude coefficients between different layers or subbands. However, for feedback channel state information, the vectors are normalized. During normalization, since the length of the vector information indicates the amplitude coefficient, the length of the vector with the largest amplitude coefficient is normalized to 1, and this normalized length of 1 is used as the amplitude coefficient of the vector with the largest amplitude coefficient. For other vector information with amplitude coefficients smaller than the amplitude coefficient of the vector with the largest amplitude coefficient, the normalized length of the other vector information is determined according to the ratio of its amplitude coefficient to that of the vector with the largest amplitude coefficient, and this normalized length is used as the amplitude coefficient of the other vector information. Therefore, the network device can determine the difference in amplitude coefficients between different vectors based on the first bit information in the vector information.

[0206] In some embodiments, the length of the vector information with the largest amplitude coefficient is normalized to 1, and the normalized length 1 is used as the amplitude coefficient of the vector information. That is, the amplitude coefficient of the vector information with the largest amplitude coefficient is the length 1 of the vector information. For other vector information, the ratio of the amplitude coefficient of the other vector information to the amplitude coefficient of the vector information with the largest amplitude coefficient is used as the normalized length of the other vector information, and the normalized length of the other vector information is used as the amplitude coefficient of the other vector information.

[0207] For example, let's take two vector pieces of information as an example. These two vector pieces of information are vector 1 and vector 2. The amplitude coefficient of vector 1 is greater than that of vector 2. For vector 1, the length is normalized to 1, while the length of vector 2 is normalized to 1 / L, where L is the ratio of the amplitude coefficient of vector 1 to that of vector 2. In other words, this embodiment of the application indicates the amplitude coefficient of different vectors by the ratio of the lengths of the two vector pieces of information, and the difference in amplitude coefficients between different vector pieces of information can be determined by the first bit information indicating the vector pieces of information.

[0208] In some embodiments, the channel state information includes second bit information, and the amplitude coefficient of each of at least two layers is indicated by the second bit information.

[0209] In this embodiment, the terminal indicates the amplitude coefficient of each layer using the second bit of information in the channel state information.

[0210] Optionally, the second bit information indicates the difference between the amplitude coefficient of the second layer and the amplitude coefficient of the first layer, where the amplitude coefficient of the first layer is 1.

[0211] The amplitude coefficient of the first layer is determined by the communication protocol or preset by the terminal; this application embodiment does not impose any limitations on this.

[0212] For example, the first layer includes layer 1, the second layer includes layer 2 and layer 3. If the difference value indicated by the second bit information of layer 2 is 0.2, then the amplitude coefficient of layer 2 is 0.2 times that of layer 1. If the difference value indicated by the second bit information of layer 3 is 0.1, then the amplitude coefficient of layer 3 is 0.1 times that of layer 1.

[0213] Optionally, the second bit information directly indicates the amplitude coefficient of each layer. For example, the second bit information indicates the amplitude coefficients of three layers: layer 1, layer 2, and layer 3. The second bit information indicates that the amplitude coefficient of layer 1 is 1, the amplitude coefficient of layer 2 is 0.8, and the amplitude coefficient of layer 3 is 0.5.

[0214] In other embodiments, the channel state information includes a second bit of information, wherein the amplitude coefficient of each subband in at least two subbands is indicated by the second bit of information.

[0215] In this embodiment of the application, the terminal indicates the amplitude coefficient of each subband through the second bit of information in the channel state information.

[0216] Optionally, the second bit information indicates the difference between the amplitude coefficient of the second subband and the amplitude coefficient of the first subband, wherein the amplitude coefficient of the first subband is 1.

[0217] The amplitude coefficient of the first sub-band is determined by the communication protocol or preset by the terminal; this application embodiment does not impose any limitations on this.

[0218] For example, the first subband includes subband 1, the second subband includes subband 2 and subband 3, the difference value indicated by the second bit information corresponding to subband 2 is 0.2, then the amplitude coefficient of subband 2 is 0.2 times that of subband 1, the difference value indicated by the second bit information corresponding to subband 3 is 0.1, then the amplitude coefficient of subband 3 is 0.1 times that of subband 1.

[0219] It should be noted that the channel state information in this application embodiment may include not only the second bit information, but also the first bit information in the above embodiment.

[0220] The first bit information is similar to that in the above embodiment, and will not be described again here.

[0221] In the solution provided by the embodiments of this application, the network device can not only determine the vector information indicated by the first bit information, and then determine the amplitude coefficient of each port or beam based on the amplitude coefficient indicated by the elements of the vector information, but also determine the amplitude coefficient of different layers or different sub-bands indicated by the second bit information. This allows the network device to refer to more information for communication with the terminal based on the amplitude coefficient of the layer or sub-band, as well as the amplitude coefficient of the ports included in the layer or the beams included in the sub-band, thereby further improving communication reliability.

[0222] In some embodiments, the terminal carries a third bit of information in the channel state information, through which the third bit of information indicates the CQI corresponding to each of at least two layers.

[0223] In this embodiment of the application, the terminal not only reports the amplitude coefficient of each layer, but also reports the CQI of each layer, and the terminal indicates the CQI of each layer by carrying a third bit of information in the channel state information.

[0224] Optionally, the third bit indicates the absolute value of the CQI corresponding to each layer.

[0225] Optionally, the third bit information indicates the difference between the CQI of the second layer and the CQI of the first layer, where the CQI of the first layer is the absolute value of the CQI.

[0226] For example, the value of the second-layer CQI is determined by the product or sum of the difference value of the second-layer CQI and the absolute value of the first-layer CQI.

[0227] For example, the second-layer CQI includes a first CQI, a second CQI, and a third CQI. If the difference value of the third bit information indicated by the first CQI is 0.4, then the first CQI is the product or sum of 0.4 and the absolute value of the first-layer CQI. If the difference value of the third bit information indicated by the second CQI is 0.5, then the first CQI is the product or sum of 0.5 and the absolute value of the first-layer CQI. If the difference value of the third bit information indicated by the third CQI is 0.7, then the first CQI is the product or sum of 0.7 and the absolute value of the first-layer CQI.

[0228] After receiving the channel state information sent by the terminal, the network device can determine the CQI corresponding to each layer based on the third bit information included in the channel state information.

[0229] The network device determines the absolute value of the first-layer CQI based on the third bit information, and can also determine the difference between the second-layer CQI and the first-layer CQI. Therefore, based on the difference between each second-layer CQI and the absolute value of the first-layer CQI, the CQI corresponding to each layer is determined.

[0230] Furthermore, the method for determining the CQI of the second layer is similar to that described above, and will not be repeated here.

[0231] In the solution provided in this application embodiment, the terminal indicates the CQI corresponding to each layer by carrying a third bit of information in the channel state information, which improves the amount of information transmission. Furthermore, the CQI can indicate the channel quality, so that the network device can perform data transmission based on the CQI, thus ensuring the reliability of communication.

[0232] exist Figure 2 Based on the embodiment shown, the terminal carries a third bit of information in the channel state information, which indicates the CQI corresponding to each of at least two subbands.

[0233] In this embodiment of the application, the terminal not only reports the amplitude coefficient of each sub-band, but also reports the CQI of each sub-band. Furthermore, the terminal indicates the CQI of each sub-band by carrying a third bit of information in the channel state information.

[0234] Optionally, the third bit indicates the absolute value of the CQI corresponding to each subband.

[0235] Optionally, the third bit information indicates the difference between the CQI of the second subband and the CQI of the first subband, where the CQI of the first subband is the absolute value of the CQI.

[0236] For example, the value of the CQI of the second sub-band is determined by the product or sum of the difference value of the CQI of the second sub-band and the absolute value of the CQI of the first sub-band.

[0237] For example, the CQI of the second sub-band includes a first CQI, a second CQI, and a third CQI. If the difference value indicated by the third bit information corresponding to the first CQI is 0.4, then the first CQI is the product or sum of 0.4 and the absolute value of the first sub-band CQI. If the difference value indicated by the third bit information corresponding to the second CQI is 0.5, then the first CQI is the product or sum of 0.5 and the absolute value of the first sub-band CQI. If the difference value indicated by the third bit information corresponding to the third CQI is 0.7, then the first CQI is the product or sum of 0.7 and the absolute value of the first sub-band CQI.

[0238] After receiving the channel state information sent by the terminal, the network device determines the CQI corresponding to each subband based on the third bit information included in the channel state information.

[0239] Once the network device receives the third bit of information, it can determine the absolute value of the CQI of the first sub-band, and also determine the difference between the CQI of the second sub-band and the CQI of the first sub-band. Therefore, based on the difference between the CQI of each sub-band and the absolute value of the CQI of the first sub-band, the CQI corresponding to each sub-band is determined.

[0240] Furthermore, the method for determining the CQI of the second sub-band is similar to that described above, and will not be repeated here. It should be noted that the steps performed in this embodiment are similar to those performed in the above embodiments, and will not be repeated here.

[0241] Figure 5 A block diagram of an information transmission apparatus provided in an exemplary embodiment of this application is shown. See also: Figure 5 The device includes:

[0242] The transmitting module 501 is used to transmit channel state information to the network device. The channel state information includes channel state information corresponding to at least two layers, or the channel state information includes channel state information corresponding to at least two sub-bands. The channel state information indicates the amplitude coefficient of each layer or each sub-band.

[0243] In some embodiments, the channel state information includes vector information corresponding to each layer, and the vector information indicates the amplitude coefficient of the layer.

[0244] or,

[0245] Channel state information includes vector information for each subband, which indicates the amplitude coefficient of the subband.

[0246] In some embodiments, the vector information includes first bit information, and the first bit information corresponds to the elements in the vector information.

[0247] In some embodiments, the elements in the vector information include at least one amplitude coefficient corresponding to a port, or the elements in the vector information include at least one amplitude coefficient corresponding to a beam.

[0248] In some embodiments, the amplitude coefficient of each of the at least two layers is the length of the vector information corresponding to the layer, and the amplitude coefficient of each layer is associated with the amplitude coefficient of at least one port included in the vector information;

[0249] or,

[0250] The amplitude coefficient of each sub-band in at least two sub-bands is the length of the vector information corresponding to the sub-band, and the amplitude coefficient of each sub-band is associated with the amplitude coefficient of at least one beam included in the vector information.

[0251] In some embodiments, the channel state information includes second bit information, and the amplitude coefficient of each of at least two layers is indicated by the second bit information;

[0252] or,

[0253] The channel state information includes a second bit of information, and the amplitude coefficient of each subband in at least two subbands is indicated by the second bit of information.

[0254] In some embodiments, the second bit information indicates the difference between the amplitude coefficient of the second layer and the amplitude coefficient of the first layer, wherein the amplitude coefficient of the first layer is 1;

[0255] or,

[0256] The second bit indicates the difference between the amplitude coefficient of the second subband and the amplitude coefficient of the first subband, where the amplitude coefficient of the first subband is 1.

[0257] In some embodiments, the channel state information further includes a third bit of information;

[0258] The third bit indicates the CQI corresponding to each of at least two layers;

[0259] or,

[0260] The third bit indicates the CQI corresponding to each of at least two subbands.

[0261] It should be noted that the apparatus provided in the above embodiments is only illustrated by the division of the above functional modules when implementing its functions. In actual applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above. In addition, the apparatus and method embodiments provided in the above embodiments belong to the same concept, and the specific implementation process can be found in the method embodiments, which will not be repeated here.

[0262] Figure 6 A block diagram of an information transmission apparatus provided in an exemplary embodiment of this application is shown. See also: Figure 6 The device includes:

[0263] The receiving module 601 is used to receive channel state information sent by the terminal. The channel state information includes channel state information corresponding to at least two layers, or the channel state information includes channel state information corresponding to at least two sub-bands. The channel state information indicates the amplitude coefficient of each layer or each sub-band.

[0264] In some embodiments, the channel state information includes vector information corresponding to each layer, and the vector information indicates the amplitude coefficient of the layer.

[0265] or,

[0266] Channel state information includes vector information for each subband, which indicates the amplitude coefficient of the subband.

[0267] In some embodiments, the vector information includes first bit information, and the first bit information corresponds to the elements in the vector information.

[0268] In some embodiments, the elements in the vector information include at least one amplitude coefficient corresponding to a port, or the elements in the vector information include at least one amplitude coefficient corresponding to a beam.

[0269] In some embodiments, the amplitude coefficient of each of the at least two layers is the length of the vector information corresponding to the layer, and the amplitude coefficient of each layer is associated with the amplitude coefficient of at least one port included in the vector information;

[0270] or,

[0271] The amplitude coefficient of each sub-band in at least two sub-bands is the length of the vector information corresponding to the sub-band, and the amplitude coefficient of each sub-band is associated with the amplitude coefficient of at least one beam included in the vector information.

[0272] In some embodiments, the channel state information includes second bit information, and the amplitude coefficient of each of at least two layers is indicated by the second bit information;

[0273] or,

[0274] The channel state information includes a second bit of information, and the amplitude coefficient of each subband in at least two subbands is indicated by the second bit of information.

[0275] In some embodiments, the second bit information indicates the difference between the amplitude coefficient of the second layer and the amplitude coefficient of the first layer, wherein the amplitude coefficient of the first layer is 1;

[0276] or,

[0277] The second bit indicates the difference between the amplitude coefficient of the second subband and the amplitude coefficient of the first subband, where the amplitude coefficient of the first subband is 1.

[0278] In some embodiments, the channel state information further includes a third bit of information;

[0279] The third bit indicates the CQI corresponding to each of at least two layers;

[0280] or,

[0281] The third bit indicates the CQI corresponding to each of at least two subbands.

[0282] It should be noted that the apparatus provided in the above embodiments is only illustrated by the division of the above functional modules when implementing its functions. In actual applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above. In addition, the apparatus and method embodiments provided in the above embodiments belong to the same concept, and the specific implementation process can be found in the method embodiments, which will not be repeated here.

[0283] Figure 7 The diagram shows a schematic representation of a communication device provided in an exemplary embodiment of this application. The communication device includes a processor 701, a receiver 702, a transmitter 703, a memory 704, and a bus 705.

[0284] The processor 701 includes one or more processing cores. The processor 701 executes various functional applications and information processing by running software programs and modules.

[0285] The receiver 702 and the transmitter 703 can be implemented as a communication component, which can be a communication chip.

[0286] The memory 704 is connected to the processor 701 via the bus 705.

[0287] The memory 704 can be used to store at least one program code, and the processor 701 is used to execute the at least one program code to implement the various steps in the above method embodiments.

[0288] Furthermore, the communication device can be a terminal or a network device. The memory 704 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, including but not limited to: magnetic disks or optical disks, electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), static random-access memory (SRAM), read-only memory (ROM), magnetic storage, flash memory, and programmable read-only memory (PROM).

[0289] In an exemplary embodiment, a computer-readable storage medium is also provided, wherein executable program code is stored in the storage medium, the executable program code being loaded and executed by a processor to implement the information transmission method performed by the communication device provided in the above-described method embodiments.

[0290] In an exemplary embodiment, a chip is provided, the chip including programmable logic circuitry and / or program instructions, which, when the chip is run on a terminal or network device, are used to implement the information transmission method provided in the various method embodiments.

[0291] In an exemplary embodiment, a computer program product is provided, which, when executed by a processor of a terminal or network device, is used to implement the information transmission methods provided in the various method embodiments described above.

[0292] Those skilled in the art will understand that all or part of the steps of the above embodiments can be implemented by hardware or by a program instructing related hardware. The program can be stored in a computer-readable storage medium, such as a read-only memory, a disk, or an optical disk.

[0293] The above description is merely an optional embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An information transmission method, characterized in that, The method is executed by a terminal, and the method includes: Send channel state information to network devices. The channel state information includes channel state information corresponding to at least two layers and vector information corresponding to each layer. The vector information indicates the amplitude coefficient of the layer. Alternatively, the channel state information includes channel state information corresponding to at least two sub-bands and vector information corresponding to each sub-band. The vector information indicates the amplitude coefficient of the sub-band. The channel state information indicates the amplitude coefficient of each layer or each sub-band. Wherein, the amplitude coefficient of each of the at least two layers is the length of the vector information corresponding to the layer, and the amplitude coefficient of each layer is associated with the amplitude coefficient corresponding to the at least one port included in the vector information; or, the amplitude coefficient of each of the at least two sub-bands is the length of the vector information corresponding to the sub-band, and the amplitude coefficient of each sub-band is associated with the amplitude coefficient corresponding to the at least one beam included in the vector information; the amplitude coefficient of each layer or sub-band is indicated by the normalized vector information length; in response to the vector information being a real number vector, the length of the vector information is the sum of the absolute values ​​of each element in the real number vector, and in response to the vector information being a complex number vector, the length of the vector information is the sum of the moduli of each element in the complex number vector.

2. The method according to claim 1, characterized in that, The vector information includes first bit information, and the first bit information corresponds to the elements in the vector information.

3. The method according to claim 2, characterized in that, The elements in the vector information include at least one amplitude coefficient corresponding to a port, or the elements in the vector information include at least one amplitude coefficient corresponding to a beam.

4. The method according to any one of claims 1 to 3, characterized in that, The channel state information includes a second bit of information, and the amplitude coefficient of each of the at least two layers is indicated by the second bit of information. or, The channel state information includes a second bit of information, and the amplitude coefficient of each of the at least two subbands is indicated by the second bit of information.

5. The method according to claim 4, characterized in that, The second bit information indicates the difference between the amplitude coefficient of the second layer and the amplitude coefficient of the first layer, where the amplitude coefficient of the first layer is 1; or, The second bit information indicates the difference between the amplitude coefficient of the second subband and the amplitude coefficient of the first subband, where the amplitude coefficient of the first subband is 1.

6. The method according to claim 2 or 3, characterized in that, The channel state information also includes a third bit of information; The third bit information indicates the Channel Quality Indicator (CQI) corresponding to each of the at least two layers; or, The third bit information indicates the CQI corresponding to each of the at least two subbands.

7. An information transmission method, characterized in that, The method is performed by a network device, and the method includes: The receiving terminal sends channel state information, which includes channel state information corresponding to at least two layers and vector information corresponding to each layer, wherein the vector information indicates the amplitude coefficient of the layer; or, the channel state information includes channel state information corresponding to at least two sub-bands and vector information corresponding to each sub-band, wherein the vector information indicates the amplitude coefficient of the sub-band, and the channel state information indicates the amplitude coefficient of each layer or each sub-band. Wherein, the amplitude coefficient of each of the at least two layers is the length of the vector information corresponding to the layer, and the amplitude coefficient of each layer is associated with the amplitude coefficient corresponding to the at least one port included in the vector information; or, the amplitude coefficient of each of the at least two sub-bands is the length of the vector information corresponding to the sub-band, and the amplitude coefficient of each sub-band is associated with the amplitude coefficient corresponding to the at least one beam included in the vector information; the amplitude coefficient of each layer or sub-band is indicated by the normalized vector information length; in response to the vector information being a real number vector, the length of the vector information is the sum of the absolute values ​​of each element in the real number vector, and in response to the vector information being a complex number vector, the length of the vector information is the sum of the moduli of each element in the complex number vector.

8. The method according to claim 7, characterized in that, The vector information includes first bit information, and the first bit information corresponds to the elements in the vector information.

9. The method according to claim 8, characterized in that, The elements in the vector information include at least one amplitude coefficient corresponding to a port, or the elements in the vector information include at least one amplitude coefficient corresponding to a beam.

10. The method according to any one of claims 7 to 9, characterized in that, The channel state information includes a second bit of information, and the amplitude coefficient of each of the at least two layers is indicated by the second bit of information. or, The channel state information includes a second bit of information, and the amplitude coefficient of each of the at least two subbands is indicated by the second bit of information.

11. The method according to claim 10, characterized in that, The second bit information indicates the difference between the amplitude coefficient of the second layer and the amplitude coefficient of the first layer, where the amplitude coefficient of the first layer is 1; or, The second bit information indicates the difference between the amplitude coefficient of the second subband and the amplitude coefficient of the first subband, where the amplitude coefficient of the first subband is 1.

12. The method according to claim 8 or 9, characterized in that, The channel state information also includes a third bit of information; The third bit information indicates the CQI corresponding to each of the at least two layers; or, The third bit information indicates the CQI corresponding to each of the at least two subbands.

13. An information transmission device, characterized in that, The device includes: A transmitting module is used to transmit channel state information to a network device. The channel state information includes channel state information corresponding to at least two layers and vector information corresponding to each layer. The vector information indicates the amplitude coefficient of the layer. Alternatively, the channel state information includes channel state information corresponding to at least two sub-bands and vector information corresponding to each sub-band. The vector information indicates the amplitude coefficient of the sub-band. The channel state information indicates the amplitude coefficient of each layer or each sub-band. Wherein, the amplitude coefficient of each of the at least two layers is the length of the vector information corresponding to the layer, and the amplitude coefficient of each layer is associated with the amplitude coefficient corresponding to the at least one port included in the vector information; or, the amplitude coefficient of each of the at least two sub-bands is the length of the vector information corresponding to the sub-band, and the amplitude coefficient of each sub-band is associated with the amplitude coefficient corresponding to the at least one beam included in the vector information; the amplitude coefficient of each layer or sub-band is indicated by the normalized vector information length; in response to the vector information being a real number vector, the length of the vector information is the sum of the absolute values ​​of each element in the real number vector, and in response to the vector information being a complex number vector, the length of the vector information is the sum of the moduli of each element in the complex number vector.

14. The apparatus according to claim 13, characterized in that, The vector information includes first bit information, and the first bit information corresponds to the elements in the vector information.

15. The apparatus according to claim 14, characterized in that, The elements in the vector information include at least one amplitude coefficient corresponding to a port, or the elements in the vector information include at least one amplitude coefficient corresponding to a beam.

16. The apparatus according to any one of claims 13 to 15, characterized in that, The channel state information includes a second bit of information, and the amplitude coefficient of each of the at least two layers is indicated by the second bit of information. or, The channel state information includes a second bit of information, and the amplitude coefficient of each of the at least two subbands is indicated by the second bit of information.

17. The apparatus according to claim 16, characterized in that, The second bit information indicates the difference between the amplitude coefficient of the second layer and the amplitude coefficient of the first layer, where the amplitude coefficient of the first layer is 1; or, The second bit information indicates the difference between the amplitude coefficient of the second subband and the amplitude coefficient of the first subband, where the amplitude coefficient of the first subband is 1.

18. The apparatus according to claim 14 or 15, characterized in that, The channel state information also includes a third bit of information; The third bit information indicates the CQI corresponding to each of the at least two layers; or, The third bit information indicates the CQI corresponding to each of the at least two subbands.

19. An information transmission device, characterized in that, The device includes: A receiving module is configured to receive channel state information sent by a terminal. The channel state information includes channel state information corresponding to at least two layers and vector information corresponding to each layer. The vector information indicates the amplitude coefficient of the layer. Alternatively, the channel state information includes channel state information corresponding to at least two sub-bands and vector information corresponding to each sub-band. The vector information indicates the amplitude coefficient of the sub-band, and the channel state information indicates the amplitude coefficient of each layer or each sub-band. Wherein, the amplitude coefficient of each of the at least two layers is the length of the vector information corresponding to the layer, and the amplitude coefficient of each layer is associated with the amplitude coefficient corresponding to the at least one port included in the vector information; or, the amplitude coefficient of each of the at least two sub-bands is the length of the vector information corresponding to the sub-band, and the amplitude coefficient of each sub-band is associated with the amplitude coefficient corresponding to the at least one beam included in the vector information; the amplitude coefficient of each layer or sub-band is indicated by the normalized vector information length; in response to the vector information being a real number vector, the length of the vector information is the sum of the absolute values ​​of each element in the real number vector, and in response to the vector information being a complex number vector, the length of the vector information is the sum of the moduli of each element in the complex number vector.

20. The apparatus according to claim 19, characterized in that, The vector information includes first bit information, and the first bit information corresponds to the elements in the vector information.

21. The apparatus according to claim 20, characterized in that, The elements in the vector information include at least one amplitude coefficient corresponding to a port, or the elements in the vector information include at least one amplitude coefficient corresponding to a beam.

22. The apparatus according to any one of claims 19 to 21, characterized in that, The channel state information includes a second bit of information, and the amplitude coefficient of each of the at least two layers is indicated by the second bit of information. or, The channel state information includes a second bit of information, and the amplitude coefficient of each of the at least two subbands is indicated by the second bit of information.

23. The apparatus according to claim 22, characterized in that, The second bit information indicates the difference between the amplitude coefficient of the second layer and the amplitude coefficient of the first layer, where the amplitude coefficient of the first layer is 1; or, The second bit information indicates the difference between the amplitude coefficient of the second subband and the amplitude coefficient of the first subband, where the amplitude coefficient of the first subband is 1.

24. The apparatus according to claim 20 or 21, characterized in that, The channel state information also includes a third bit of information; The third bit information indicates the CQI corresponding to each of the at least two layers; or, The third bit information indicates the CQI corresponding to each of the at least two subbands.

25. A terminal, characterized in that, The terminal includes: processor; A transceiver connected to the processor; The processor is configured to load and execute executable instructions to implement the information transmission method as described in any one of claims 1 to 6.

26. A network device, characterized in that, The network device includes: processor; A transceiver connected to the processor; The processor is configured to load and execute executable instructions to implement the information transmission method as described in any one of claims 7 to 12.

27. A computer-readable storage medium, characterized in that, The readable storage medium stores executable program code, which is loaded and executed by a processor to implement the information transmission method as described in any one of claims 1 to 12.

28. A computer program product, characterized in that, When the computer program product is executed by the processor of a terminal or network device, it is used to implement the information transmission method as described in any one of claims 1 to 12.

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