Information transmission method and apparatus, related devices, storage medium, and computer program product

Abstract

The present application discloses an information transmission method and apparatus, a receiving device, a sending device, a storage medium, and a computer program product. The method comprises: a receiving device feeds back first information to a sending device, wherein the first information represents L-layer receiving space characteristics within one symbol, and L is an integer greater than or equal to 2.

Description

Information transmission methods, devices, related equipment, storage media and computer program products

[0001] Relevant publicly available cross-references

[0002] This application is based on and claims priority to Chinese Patent Publication No. 202410676110.3, filed on May 28, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of wireless communication, and in particular to an information transmission method, apparatus, related equipment, storage medium, and computer program product. Background Technology

[0004] Currently, purely digital Multiple-Input Multiple-Output (MIMO) and mixed-signal MIMO technologies are widely used in existing communication systems. In purely digital MIMO systems, since MIMO combining is not performed at the analog ends (located at both the receiver and transmitter) (meaning the purely digital MIMO system only performs digital beamforming and not analog beamforming), the receiver does not need to feed back the selected analog beam information (which can also be understood as information related to the analog combining matrix) to the transmitter. In contrast, mixed-signal MIMO systems require analog beam combining (meaning the mixed-signal MIMO system combines digital and analog beamforming). In this case, the receiver can feed back the selected analog beam information to the transmitter through beam management, allowing the transmitter to optimize the MIMO precoding matrix using the information fed back from the receiver.

[0005] However, in related technologies, the scheme of optimizing the MIMO precoding matrix by using the analog beam information fed back from the receiver at the transmitting end is difficult to further improve the spectral efficiency performance of the MIMO system. Summary of the Invention

[0006] To address the related technical problems, embodiments of this application provide an information transmission method, apparatus, related equipment, storage medium, and computer program product.

[0007] The technical solution of this application embodiment is implemented as follows:

[0008] This application provides an information transmission method applied to a receiving device, including:

[0009] Feedback of first information to the transmitting device, wherein the first information characterizes the reception space characteristics of layer L within a symbol, where L is an integer greater than or equal to 2.

[0010] In the above scheme, the step of feeding back the first information to the sending device includes one or more of the following:

[0011] Feedback to the transmitting device the codebook parameter information of the L-layer received beam within one symbol;

[0012] A reference signal is transmitted to the transmitting device, the relevant information of which is associated with the L-layer receive space characteristics within a symbol.

[0013] In the above scheme, the codebook parameter information includes the codebook's identification information.

[0014] In the above scheme, the transmitting device feeds back the codebook parameter information of the L-layer received beam, including:

[0015] When sending a Channel State Information (CSI) report to the transmitting device, the codebook parameter information of the L-layer received beam is fed back to the transmitting device.

[0016] In the above scheme, the value of L is related to the number of points in the Fast Fourier Transform (FFT).

[0017] The method in the above scheme further includes:

[0018] Feedback of interference-related information from the receiving end to the transmitting device.

[0019] In the above scheme, the interference-related information includes an interference correlation matrix, or elements of the interference correlation matrix.

[0020] In the above scheme, the step of feeding back interference-related information from the receiving end to the transmitting device includes:

[0021] The transmitting device sends a Physical Uplink Shared Channel (PUSCH) and / or a Physical Uplink Control Channel (PUCCH), wherein the PUSCH and / or PUCCH contain the interference-related information.

[0022] In the above scheme, each layer of the receiving space has one or more of the following characteristics:

[0023] Parameters of the antenna element associated with the receiving beam;

[0024] Identification of the receiving beam;

[0025] Reference signal and / or channel associated with the received beam.

[0026] This application also provides an information transmission method applied to a transmitting device, including:

[0027] The first information fed back by the receiving device is characterized by the receiving spatial characteristics of layer L within a symbol, where L is an integer greater than or equal to 2.

[0028] In the above scheme, the first information fed back by the receiving device includes one or more of the following:

[0029] Receive the codebook parameter information of the L-layer received beam within one symbol fed back by the receiving device;

[0030] The receiving device receives a reference signal, the relevant information of which is associated with the L-layer receiving spatial characteristics within a symbol.

[0031] In the above scheme, the codebook parameter information includes the codebook's identification information.

[0032] In the above scheme, receiving the codebook parameter information of the L-layer received beam fed back by the receiving device includes:

[0033] When receiving the CSI report from the receiving device, the codebook parameter information of the L-layer received beam is also received from the receiving device.

[0034] In the above scheme, the value of L is related to the number of FFT points.

[0035] The method in the above scheme further includes:

[0036] Receive interference-related information fed back from the receiving device.

[0037] In the above scheme, the interference-related information includes an interference correlation matrix, or elements of the interference correlation matrix.

[0038] In the above scheme, the interference-related information fed back by the receiving device includes:

[0039] Receive the PUSCH and / or PUCCH sent by the receiving device, wherein the PUSCH and / or PUCCH contains the interference-related information.

[0040] In the above scheme, each layer of the receiving space has one or more of the following characteristics:

[0041] Parameters of the antenna element associated with the receiving beam;

[0042] Identification of the receiving beam;

[0043] Reference signal and / or channel associated with the received beam.

[0044] This application also provides an information transmission device, including:

[0045] The transmitting unit is used to feed back first information to the transmitting device. The first information represents the reception space characteristics of layer L within a symbol, where L is an integer greater than or equal to 2.

[0046] This application also provides an information transmission device, including:

[0047] The receiving unit is used to receive first information fed back by the receiving device. The first information characterizes the receiving space characteristics of L layers within a symbol, where L is an integer greater than or equal to 2.

[0048] This application embodiment also provides a receiving device, including: a first processor and a first communication interface; wherein,

[0049] The first communication interface is used to feed back first information to the transmitting device. The first information represents the reception space characteristics of layer L within a symbol, where L is an integer greater than or equal to 2.

[0050] This application also provides a transmitting device, including: a second processor and a second communication interface; wherein,

[0051] The second communication interface is used to receive first information fed back by the receiving device. The first information characterizes the receiving space characteristics of layer L within a symbol, where L is an integer greater than or equal to 2.

[0052] This application also provides a receiving device, including: a first processor and a first memory for storing a computer program capable of running on the processor.

[0053] Wherein, when the first processor is used to run the computer program, it executes the steps of any of the methods described above on the receiving device side.

[0054] This application also provides a transmitting device, including: a second processor and a second memory for storing a computer program capable of running on the processor.

[0055] Wherein, when the second processor is used to run the computer program, it executes the steps of any of the methods described above on the transmitting device side.

[0056] This application embodiment also provides a storage medium storing a computer program thereon, which, when executed by a processor, implements the steps of any of the methods described above for the receiving device side, or implements the steps of any of the methods described above for the transmitting device side.

[0057] This application also provides a computer program product, including a computer program that, when executed by a processor, implements the steps of any of the methods described above for the receiving device side, or implements the steps of any of the methods described above for the transmitting device side.

[0058] The information transmission method, apparatus, receiving device, transmitting device, storage medium, and computer program product provided in this application embodiment include a receiving device feeding back first information to a transmitting device. This first information characterizes L layers of receiving spatial characteristics within a symbol, where L is an integer greater than or equal to 2. The solution provided in this application embodiment allows the receiving device to feed back L layers of receiving spatial characteristics within a symbol to the transmitting device. Thus, when the receiving end can switch different receiving beams (or receiving channels) within a symbol, the transmitting end can obtain all the receiving spatial characteristics of the receiving end within a symbol and optimize the MIMO precoding matrix using all the received receiving spatial characteristics, thereby improving the spectral efficiency performance of the MIMO system. Attached Figure Description

[0059] Figure 1 is a flowchart illustrating an information transmission method according to an embodiment of this application;

[0060] Figure 2 is a flowchart illustrating another information transmission method according to an embodiment of this application;

[0061] Figure 3 is a flowchart illustrating the third information transmission method according to an embodiment of this application;

[0062] Figure 4 is a schematic diagram of an information transmission device according to an embodiment of this application;

[0063] Figure 5 is a schematic diagram of another information transmission device structure according to an embodiment of this application;

[0064] Figure 6 is a schematic diagram of the receiving device structure according to an embodiment of this application;

[0065] Figure 7 is a schematic diagram of the transmitting device structure according to an embodiment of this application;

[0066] Figure 8 is a schematic diagram of the information transmission system structure according to an embodiment of this application. Detailed Implementation

[0067] The present application will now be described in further detail with reference to the accompanying drawings and embodiments.

[0068] In related technologies, after receiving a signal, the receiver in a hybrid analog-digital MIMO system can feed back the analog beam information selected by the receiver to the transmitter. Specifically, it can tell the transmitter which transmitter beam corresponds to the beam used by the receiver to receive the signal. In this way, the transmitter can optimize the precoding matrix in the MIMO system based on the analog beam information fed back by the receiver. This can also be understood as the transmitter using the information fed back by the receiver to calculate the MIMO precoding matrix used for data transmission.

[0069] To meet the demand for higher system capacity, a novel MIMO transmission mode is proposed. In this new MIMO transmission mode, the receiver can switch between different receiving beams within a certain time window (specifically, within one Orthogonal Frequency Division Multiplexing (OFDM) symbol). Thus, using this new MIMO transmission mode can expand the dimension of the channel matrix, achieve higher spatial multiplexing capability, and significantly improve spectral efficiency performance.

[0070] However, when using novel MIMO transmission modes in a hybrid analog-digital MIMO system, the transmitter struggles to obtain information about the receiver's spatial characteristics (which can also be understood as information about the receiver's beams, or analog domain receiver beam information), i.e., which receiver beam directions the receiver switches within a symbol. Therefore, it becomes difficult for the transmitter to optimize the MIMO precoding matrix for novel MIMO transmission modes, hindering further improvements in the spectral efficiency of the MIMO system.

[0071] Based on this, in various embodiments of this application, the receiving device feeds back the L-layer receiving spatial characteristics of the receiving device within a symbol to the transmitting device. In this way, when the receiving end can switch different receiving beams within a symbol, the transmitting end can know all the receiving spatial characteristics of the receiving end within a symbol, and use all the received receiving spatial characteristics to optimize the MIMO precoding matrix, thereby improving the spectral efficiency performance of the MIMO system.

[0072] This application provides an information transmission method applied to a receiving device, as shown in Figure 1. The method includes:

[0073] Step 101: Feed back first information to the transmitting device. The first information represents the reception space characteristics of layer L within a symbol, where L is an integer greater than or equal to 2.

[0074] In practical applications, the transmitting and receiving devices can be deployed in a MIMO system. The transmitting device can be referred to as a transmitting end device or a transmitting end, and correspondingly, the receiving device can be referred to as a receiving end device or a receiving end. Specifically, the transmitting device may include a base station, such as a gNB; correspondingly, the receiving device may include a terminal, also referred to as a UE, terminal device, device, or user, etc., and this embodiment does not limit this. In this case, the feedback of the first information can also be understood as sending the first information, notifying the first information, or configuring the first information. Of course, the transmitting device may also include a terminal, and correspondingly, the receiving device may also include a base station. In this case, the feedback of the first information can also be understood as sending the first information or reporting the first information.

[0075] The receiving device needs to determine the first information. Based on this, in one embodiment, prior to step 101, as shown in Figure 1, the method may further include:

[0076] Step 100: Determine the first information.

[0077] In practical applications, the MIMO system to which the transmitting and receiving devices belong can use a novel MIMO transmission mode. Before step 101, the transmitting device can send signals to the receiving device (which can also be understood as sending data signals or performing channel transmission); correspondingly, the receiving device can receive signals sent by the transmitting device. The receiving device can use multiple receiving beams (which can also be understood as physical radio frequency channels, analog domain receiving beams, or wideband receiving beams) to receive signals within one symbol (which can also be understood as one symbol period), meaning the receiving device can switch the receiving beam used to receive signals within one symbol. Here, "one symbol" can also be understood as within a certain time window, specifically including one OFDM symbol occupied by a scheduled data channel.

[0078] Based on this, the receiving device can determine the first information using relevant information about the receiving beams used by the receiving device when receiving signals within a symbol. Specifically, the receiving device can determine a layer of receiving spatial characteristics (which can also be understood as a layer of receiving beam information) corresponding to each receiving beam used when receiving signals within a symbol, and determine the first information using all L layers of determined receiving spatial characteristics. Here, receiving spatial characteristics can also be understood as spatial receiving characteristics, or receiving spatial features, or spatial receiving parameters, or receiving spatial parameters; that is, these descriptions are equivalent. The value of L is related to the number of receiving beams used by the receiving device within a symbol. Here, a layer of receiving spatial characteristics in the L layers can be used to characterize a receiving beam.

[0079] Specifically, in one embodiment, the characteristics of each receiving space layer may include one or more of the following (one or more may also be understood as at least one):

[0080] Parameters of the antenna element associated with the receiving beam;

[0081] Identification of the receiving beam;

[0082] Reference signal and / or channel associated with the received beam.

[0083] Specifically, the parameters of the antenna element may include one or more of the following: amplitude characteristics, phase characteristics, and polarization characteristics of the antenna element. The amplitude and phase characteristics of the antenna element can also be referred to as the spatial radiation pattern characteristics of the antenna.

[0084] In practical applications, the specific implementation of the receiving device using multiple receiving beams to receive signals within a symbol may include: the receiving device switching the receiving beam once every preset number of sampling points within a symbol. Here, the number of sampling points can be specifically represented by the number of Fourier Transform (FFT) points (which can also be understood as the number of sampling points). That is, the number of receiving beams used by the receiving device within a symbol is related to the number of FFT points.

[0085] Therefore, in one embodiment, the value of L is associated with the number of FFT points.

[0086] In practical applications, when the receiving device receives a signal, it can upsample the received signal. That is, the receiving device can determine the number of FFT points after upsampling within one symbol based on the base FFT points and the upsampling factor of the received signal in the receiving device (i.e., the number of FFT points after upsampling = the base FFT points × the upsampling factor).

[0087] After determining the number of FFT points within a symbol, the receiving device can use the determined number of FFT points and the preset sampling point interval for switching the receiving beam (i.e., the preset number of sampling points required to switch the receiving beam once) to determine how many different receiving beams the receiving device switched within a symbol, that is, to determine the number of receiving beams used by the receiving device to receive the signal, and to determine the value of L. The specific values ​​of the preset sampling point interval and the initial number of FFT points can be set according to actual needs and the device performance of the receiving device; this embodiment does not limit this.

[0088] For example, suppose the receiving device receives a signal with a base FFT of 512 points within one symbol, an upsampling factor of 4, and the receiving device can switch its receiving beam every 32 FFT points. That is, the receiving device has 2048 upsampled FFT points within one symbol. Therefore, it can be determined that the receiving device can use 64 receiving beams within one symbol to receive the signal, and thus the value of L is 64, i.e., L = 2048 / 32 = 64.

[0089] After determining the value of the layer number L, the receiving device can determine the receiving spatial characteristics of one layer corresponding to each receiving beam used in receiving the signal, based on the relevant information of each receiving beam. This allows the receiving device to determine the receiving spatial characteristics of all L receiving beams within a symbol, corresponding to the L layers of receiving spatial characteristics, i.e., the first information. Thus, in step 101, the receiving device can feed back the first information (i.e., which receiving beams the receiving device specifically used for signal reception within a symbol) to the transmitting device, enabling the transmitting device to optimize the MIMO precoding matrix using the information fed back by the receiving device, thereby improving the spectral efficiency performance of the MIMO system.

[0090] In practical applications, to reduce transmission load, the receiving device and the transmitting device can share a codebook. This codebook contains multiple codewords (or can be understood as a collection of codewords). Each codeword corresponds to a receiving beam that the receiving device may use, and each codeword can be characterized by codebook parameter information. Thus, in step 101, the receiving device can send back only the codebook parameter information corresponding to the L-layer receiving beams used within a symbol to the transmitting device, enabling the transmitting device to determine all L-layer receiving spatial characteristics within a symbol using the received codebook parameter information.

[0091] Based on this, in one embodiment, the specific implementation of step 101 may include:

[0092] The codebook parameter information of the L-layer received beam within one symbol is fed back to the transmitting device.

[0093] Specifically, in step 101, the receiving device feeds back the codebook parameter information corresponding to the L-layer receiving beam to the transmitting device. The transmitting device can use the received codebook parameter information and the shared codebook to determine the L-layer receiving spatial characteristics corresponding to the specific L-layer receiving beam used by the receiving device. Since the space occupied by the codebook-related parameter information is much smaller than the space occupied by all L-layer receiving spatial characteristics, the receiving device can greatly reduce the transmission load by feeding back the first information by feeding back the codebook parameter information of the L-layer receiving beam within one symbol to the transmitting device. Here, feeding back the codebook parameter information of the L-layer receiving beam within one symbol can also be understood as sending the codebook parameter information of the L-layer receiving beam within one symbol.

[0094] In practical applications, the receiving device and the transmitting device can share multiple codebooks, and each shared codebook can be identified by its identification information.

[0095] Therefore, in one embodiment, the codebook parameter information includes codebook identification information. The transmitting device can use the codebook identification information to determine which codebook the relevant information fed back by the receiving device corresponds to.

[0096] In practical applications, the codebook parameter information may specifically include codebook index information. The transmitting device can determine the codeword corresponding to the L-layer receiving beam from the shared codebook based on the codebook index information, and thus determine the L-layer receiving spatial characteristics corresponding to the L-layer receiving beam. The codebook index information can be represented using a mapping table or an N-tuple.

[0097] When the codebook index information is represented by a mapping table, each entry in the mapping table corresponds to an identifier and a receiving beam used by the receiving end to receive the signal. In step 101, the receiving device can send L identifiers from the mapping table corresponding to the L-layer receiving beam to the transmitting device, so that the transmitting device can determine the corresponding L-layer receiving beam based on the received L identifiers.

[0098] Meanwhile, when the receiving device receives a signal, it can receive the signal from one of the multiple receiving beam directions through one of the multiple receiving antenna ports in the receiving device. That is, the receiving beam can be characterized by the receiving antenna ports and the receiving beam directions in the receiving device. Therefore, the receiving beams can be grouped according to parameters such as the receiving beam direction and the receiving antenna ports. Correspondingly, the codebook can also be grouped according to parameters such as the receiving beam direction and the receiving antenna ports to obtain multiple codebooks, and each codebook in the multiple codebooks can be characterized using a group identifier.

[0099] Based on this, when the codebook index information is represented by N-tuples, the different elements of the N-tuples can be used to represent the group identifier of a codebook corresponding to the L-layer receiving beam, the relevant parameters of the specific codeword in that codebook corresponding to the L-layer receiving beam, etc. Thus, in step 101, the receiving device feeds back the N-tuple to the transmitting device. The transmitting device can use the elements in the received N-tuple to determine the L-layer receiving beam used by the receiving device within a symbol, and then determine the L-layer receiving spatial characteristics corresponding to the L-layer receiving beam.

[0100] In practical applications, when the transmitting device is a base station and the receiving device is a terminal, the CSI feedback can be enhanced when the receiving device feeds back Channel State Information (CSI) to the transmitting device. Specifically, the codebook parameter information of the L-layer received beam can be jointly reported with CSI feedback information such as Channel Quality Indicator (CQI), Rank Indication (RI), and Precoding Matrix Indicator (PMI) (which can also be understood as CSI feedback quantity).

[0101] Based on this, in one embodiment, the transmitting device feeds back the codebook parameter information of the L-layer received beam, including:

[0102] When sending a CSI report to the transmitting device, the receiving device also sends the codebook parameter information of the L-layer receive beam to the transmitting device. In other words, the receiving device sends a CSI report to the transmitting device, and the CSI report contains the codebook parameter information of the L-layer receive beam.

[0103] In practical applications, if the uplink and downlink channels between the receiving and transmitting devices are reciprocal, or if the uplink and downlink beams are correlated, or if the receiving and transmitting beams are correlated, an association can be established between the receiving and transmitting devices to share reference signal resources and the L-layer receiving spatial characteristics within a symbol of the receiving device. Thus, in step 101, the receiving device can send a reference signal to the transmitting device through the reference signal resources associated with the L-layer receiving spatial characteristics. This allows the transmitting device to determine the associated L-layer receiving spatial characteristics based on the reference signal resources corresponding to the received reference signal and the association relationship (i.e., the transmitting device indirectly determines the associated L-layer receiving spatial characteristics through the reference signal). Furthermore, the L-layer receiving spatial characteristics can be used to optimize the MIMO precoding matrix and improve the spectral efficiency performance of the MIMO system.

[0104] Based on this, in one embodiment, the specific implementation of step 101 may include:

[0105] A reference signal is transmitted to the transmitting device, the relevant information of which is associated with the L-layer receive space characteristics within a symbol.

[0106] In practical applications, the reference signal may specifically include a sounding reference signal (SRS). The method by which the receiving device sends the reference signal to the sending device to provide the first information can also be called implicit feedback or implicit reporting; that is, the receiving device provides the first information to the sending device through implicit feedback.

[0107] In practical applications, when the transmitting device optimizes the MIMO precoding matrix, it can also consider the correlation of noise or interference between different antennas of the receiving device, thereby optimizing the MIMO precoding matrix more accurately.

[0108] Based on this, in one embodiment, the method may further include:

[0109] Feedback of interference-related information from the receiving end to the transmitting device.

[0110] In one embodiment, the interference-related information may include an interference correlation matrix or elements of the interference correlation matrix.

[0111] Here, the interference-related information at the feedback receiving end can also be understood as the interference-related information at the transmitting and receiving end. In practical applications, the elements in the interference correlation matrix may specifically include main diagonal elements, sub-diagonal elements, and index information of the quantized interference correlation matrix, etc.

[0112] In practical applications, when the transmitting device is a base station and the receiving device is a terminal, the receiving device can feed back the interference-related information to the transmitting device through the Physical Uplink Shared Channel (PUSCH) and / or the Physical Uplink Control Channel (PUCCH).

[0113] Based on this, in one embodiment, the step of feeding back the interference-related information of the receiving end to the transmitting device includes:

[0114] Send a PUSCH and / or PUCCH to the transmitting device, the PUSCH and / or PUCCH containing the interference-related information.

[0115] In practical applications, after receiving the first information and interference-related information from the receiving device, the transmitting device can use the received first information and interference-related information to optimize the MIMO precoding matrix, thereby improving the spectral efficiency performance of the MIMO system. The specific implementation of optimizing the MIMO precoding matrix can be understood according to relevant technologies, and this application embodiment does not limit it in this regard.

[0116] Accordingly, this application also provides an information transmission method applied to a transmitting device, as shown in FIG2, the method comprising:

[0117] Step 201: Receive the first information fed back by the receiving device, the first information representing the reception space characteristics of layer L within a symbol, where L is an integer greater than or equal to 2.

[0118] In practical applications, in step 201, the transmitting device can receive the first information fed back by the receiving device (i.e., which receiving beams the receiving device specifically used for signal reception within a symbol). This allows the transmitting device to optimize the MIMO precoding matrix using the information fed back by the receiving device, thereby improving the spectral efficiency performance of the MIMO system. Here, the L-layer receiving spatial characteristics (which can also be understood as L-layer receiving beam information) can characterize the relevant information of the L-layer receiving beams used by the receiving device within a symbol. The value of L is related to the number of receiving beams used by the receiving device within a symbol.

[0119] In practical applications, to reduce transmission load, the receiving device and the transmitting device can share a codebook. This codebook contains multiple codewords, each corresponding to a receiving beam that the receiving device may use. Each codeword can be characterized by codebook parameter information. Thus, in step 201, the transmitting device can determine all L-layer receiving spatial characteristics within a symbol simply by receiving the codebook parameter information corresponding to the L-layer receiving beam used within that symbol.

[0120] Based on this, in one embodiment, the specific implementation of step 201 may include:

[0121] Receive the codebook parameter information of the L-layer received beam within one symbol fed back by the receiving device;

[0122] In practical applications, the transmitting device receives codebook parameter information corresponding to the L-layer receiving beam transmitted by the receiving device. Thus, the transmitting device can use the received codebook parameter information and the shared codebook to determine the L-layer receiving spatial characteristics corresponding to the specific L-layer receiving beam used by the receiving device. Since the space occupied by codebook-related parameter information is much smaller than the space occupied by all L-layer receiving spatial characteristics, the receiving device can significantly reduce the transmission load by feeding back the first information by sending back the codebook parameter information of the L-layer receiving beam within one symbol to the transmitting device.

[0123] In practical applications, when the transmitting device is a base station and the receiving device is a terminal, when the receiving device feeds back CSI to the transmitting device, it can jointly report the codebook parameter information of the L-layer received beam with CQI, RI, PMI, etc.

[0124] Based on this, in one embodiment, receiving the codebook parameter information of the L-layer received beam fed back by the receiving device includes:

[0125] When receiving the CSI report from the receiving device, the receiving device also receives the codebook parameter information of the L-layer receive beam. In other words, the receiving device sends a CSI report to the transmitting device, and the CSI report contains the codebook parameter information of the L-layer receive beam.

[0126] In practical applications, if the uplink and downlink channels between the receiving and transmitting devices are reciprocal, or if the uplink and downlink beams are correlated, or if the receiving and transmitting beams are correlated, an association can be established between the receiving and transmitting devices to share reference signal resources and the L-layer receiving spatial characteristics within a symbol of the receiving device. Thus, in step 201, the receiving device can transmit a reference signal to the transmitting device using the reference signal resources associated with the L-layer receiving spatial characteristics. Correspondingly, the transmitting device receives the reference signal and, based on the reference signal resources corresponding to the received reference signal, determines the associated L-layer receiving spatial characteristics. This allows the L-layer receiving spatial characteristics to be used to optimize the MIMO precoding matrix and improve the spectral efficiency performance of the MIMO system.

[0127] Based on this, in one embodiment, the specific implementation of step 201 may include:

[0128] The receiving device receives a reference signal, the relevant information of which is associated with the L-layer receiving spatial characteristics within a symbol.

[0129] In practical applications, after receiving the first information from the receiving device, the transmitting device can use the received first information to optimize the MIMO precoding matrix, thereby improving the spectral efficiency performance of the MIMO system.

[0130] Based on this, in one embodiment, as shown in FIG2, the method may further include:

[0131] Step 202: Optimize the MIMO precoding matrix using the first information.

[0132] In practical applications, the specific implementation of the optimized MIMO precoding matrix can be understood according to relevant technologies, and this application embodiment does not limit it.

[0133] In practical applications, when the transmitting device optimizes the MIMO precoding matrix, it can also consider the correlation of noise or interference between different antennas of the receiving device, thereby optimizing the MIMO precoding matrix more accurately.

[0134] Based on this, in one embodiment, the method may further include:

[0135] Receive interference-related information fed back from the receiving device.

[0136] In practical applications, when the transmitting device is a base station and the receiving device is a terminal, the receiving device can feed back the interference-related information to the transmitting device through PUSCH and / or PUCCH.

[0137] Based on this, in one embodiment, the interference-related information fed back by the receiving device includes:

[0138] Receive the PUSCH and / or PUCCH sent by the receiving device, wherein the PUSCH and / or PUCCH contains the interference-related information.

[0139] This application also provides an information transmission method, as shown in Figure 3, which includes:

[0140] Step 301: The receiving device feeds back first information to the transmitting device. The first information represents the receiving space characteristics of layer L within a symbol, where L is an integer greater than or equal to 2.

[0141] Step 302: The sending device receives the first information fed back by the receiving device.

[0142] It should be noted that the specific processing procedures of the receiving and transmitting devices have been detailed above and will not be repeated here.

[0143] The information transmission method provided in this application embodiment involves a receiving device feeding back first information to a transmitting device. This first information characterizes the L-layer reception space characteristics within a symbol, where L is an integer greater than or equal to 2. The scheme provided in this application embodiment allows the receiving device to feed back the L-layer reception space characteristics of the receiving device within a symbol to the transmitting device. Thus, when the receiving end can switch between different receiving beams (or receiving channels) within a symbol, the transmitting end can obtain all the reception space characteristics of the receiving end within a symbol and utilize these received reception space characteristics to optimize the MIMO precoding matrix, thereby improving the spectral efficiency performance of the MIMO system.

[0144] To implement the method provided on the receiving device side in this application embodiment, this application embodiment also provides an information transmission device, disposed on the receiving device, as shown in FIG4, the device including:

[0145] The transmitting unit 401 is used to feed back first information to the transmitting device. The first information represents the reception space characteristics of layer L within a symbol, where L is an integer greater than or equal to 2.

[0146] In one embodiment, the sending unit 401 is specifically used for:

[0147] Feedback to the transmitting device the codebook parameter information of the L-layer received beam within one symbol;

[0148] A reference signal is transmitted to the transmitting device, the relevant information of which is associated with the L-layer receive space characteristics within a symbol.

[0149] In one embodiment, the sending unit 401 is specifically used for:

[0150] When sending a CSI report to the transmitting device, the codebook parameter information of the L-layer received beam is also sent to the transmitting device.

[0151] In one embodiment, the sending unit 401 is further configured to:

[0152] Feedback of interference-related information from the receiving end to the transmitting device.

[0153] In one embodiment, the sending unit 401 is specifically used for:

[0154] Send a PUSCH and / or PUCCH to the transmitting device, the PUSCH and / or PUCCH containing the interference-related information.

[0155] In one embodiment, the device may further include:

[0156] The determining unit 402 is used to determine the first information.

[0157] In practical applications, the sending unit 401 can be implemented by the communication interface in the information transmission device, and the determining unit 402 can be implemented by the processor in the information transmission device.

[0158] To implement the method on the transmitting device side of this application embodiment, this application embodiment also provides an information transmission device, disposed on the transmitting device, as shown in FIG5, the device including:

[0159] The receiving unit 501 is used to receive first information fed back by the receiving device. The first information characterizes the receiving space characteristics of L layers within a symbol, where L is an integer greater than or equal to 2.

[0160] In one embodiment, the receiving unit 501 is specifically used for:

[0161] Receive the codebook parameter information of the L-layer received beam within one symbol fed back by the receiving device;

[0162] The receiving device receives a reference signal, the relevant information of which is associated with the L-layer receiving spatial characteristics within a symbol.

[0163] In one embodiment, the receiving unit 501 is specifically used for:

[0164] When receiving the CSI report from the receiving device, the codebook parameter information of the L-layer received beam is also received from the receiving device.

[0165] In one embodiment, the receiving unit 501 is further configured to:

[0166] Receive interference-related information fed back from the receiving device.

[0167] In one embodiment, the receiving unit 501 is specifically used for:

[0168] Receive the PUSCH and / or PUCCH sent by the receiving device, wherein the PUSCH and / or PUCCH contains the interference-related information.

[0169] In one embodiment, the device may further include:

[0170] The optimization unit 502 is used to optimize the MIMO precoding matrix using the first information.

[0171] In practical applications, the receiving unit 501 can be implemented by the communication interface in the information transmission device, and the optimization unit 502 can be implemented by the processor in the information transmission device.

[0172] It should be noted that the information transmission device provided in the above embodiments is only illustrated by the division of the above-described program units. In practical applications, the above processing can be assigned to different program units as needed, that is, the internal structure of the device can be divided into different program units to complete all or part of the processing described above. In addition, the information transmission device and the information transmission method embodiments provided in the above embodiments belong to the same concept, and their specific implementation process can be found in the method embodiments, which will not be repeated here.

[0173] Based on the hardware implementation of the above program modules, and in order to implement the method on the receiving device side of this application embodiment, this application embodiment also provides a receiving device, as shown in FIG6, the receiving device 600 includes:

[0174] The first communication interface 601 is capable of exchanging information with the transmitting device;

[0175] The first processor 602 is connected to the first communication interface 601 to enable information interaction with the transmitting device and to execute the methods provided by one or more technical solutions on the receiving device side when running a computer program.

[0176] The computer program is stored in the first memory 603.

[0177] Specifically, the first communication interface 601 is used for:

[0178] Feedback of first information to the transmitting device, wherein the first information characterizes the reception space characteristics of layer L within a symbol, where L is an integer greater than or equal to 2.

[0179] In one embodiment, the first communication interface 601 is specifically used for:

[0180] Feedback to the transmitting device the codebook parameter information of the L-layer received beam within one symbol;

[0181] A reference signal is transmitted to the transmitting device, the relevant information of which is associated with the L-layer receive space characteristics within a symbol.

[0182] In one embodiment, the first communication interface 601 is specifically used for:

[0183] When sending a CSI report to the transmitting device, the codebook parameter information of the L-layer received beam is also sent to the transmitting device.

[0184] In one embodiment, the first communication interface 601 is further configured to:

[0185] Feedback of interference-related information from the receiving end to the transmitting device.

[0186] In one embodiment, the first communication interface 601 is specifically used for:

[0187] Send a PUSCH and / or PUCCH to the transmitting device, the PUSCH and / or PUCCH containing the interference-related information.

[0188] In one embodiment, the first processor 602 is configured to:

[0189] Determine the first information.

[0190] It should be noted that the specific processing procedures of the first processor 602 and the first communication interface 601 can be understood by referring to the above method.

[0191] Of course, in practical applications, the various components in the receiving device 600 are coupled together through the bus system 604. It can be understood that the bus system 604 is used to realize the connection and communication between these components. In addition to the data bus, the bus system 604 also includes a power bus, a control bus, and a status signal bus. However, for clarity, all buses are labeled as bus system 604 in Figure 6.

[0192] The first memory 603 in this embodiment is used to store various types of data to support the operation of the receiving device 600. Examples of such data include any computer program used to operate on the receiving device 600.

[0193] The methods disclosed in the embodiments of this application can be applied to the first processor 602, or implemented by the first processor 602. The first processor 602 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method can be completed by the integrated logic circuit of the hardware or by instructions in the form of software in the first processor 602. The first processor 602 may be a general-purpose processor, a digital signal processor (DSP), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The first processor 602 can implement or execute the methods, steps and logic block diagrams disclosed in the embodiments of this application. The general-purpose processor may be a microprocessor or any conventional processor, etc. The steps of the methods disclosed in the embodiments of this application can be directly reflected as being executed by a hardware decoding processor, or being executed by a combination of hardware and software modules in the decoding processor. The software modules may be located in a storage medium, which is located in the first memory 603. The first processor 602 reads the information in the first memory 603 and completes the steps of the aforementioned method in combination with its hardware.

[0194] In an exemplary embodiment, the receiving device 600 may be implemented by one or more application-specific integrated circuits (ASICs), DSPs, programmable logic devices (PLDs), complex programmable logic devices (CPLDs), field-programmable gate arrays (FPGAs), general-purpose processors, controllers, microcontrollers (MCUs), microprocessors, or other electronic components to perform the aforementioned method.

[0195] Based on the hardware implementation of the above program modules, and in order to implement the method on the transmitting device side of this application embodiment, this application embodiment also provides a transmitting device, as shown in FIG7, the transmitting device 700 includes:

[0196] The second communication interface 701 is capable of exchanging information with the receiving device;

[0197] The second processor 702 is connected to the second communication interface 701 to enable information interaction with the receiving device and to execute the methods provided by one or more technical solutions on the sending device side when running a computer program.

[0198] The computer program is stored in the second memory 703.

[0199] Specifically, the second communication interface 701 is used for:

[0200] The first information fed back by the receiving device is characterized by the receiving spatial characteristics of layer L within a symbol, where L is an integer greater than or equal to 2.

[0201] In one embodiment, the second communication interface 701 is specifically used for:

[0202] Receive the codebook parameter information of the L-layer received beam within one symbol fed back by the receiving device;

[0203] The receiving device receives a reference signal, the relevant information of which is associated with the L-layer receiving spatial characteristics within a symbol.

[0204] In one embodiment, the second communication interface 701 is specifically used for:

[0205] When receiving the CSI report from the receiving device, the codebook parameter information of the L-layer received beam is also received from the receiving device.

[0206] In one embodiment, the second communication interface 701 is further configured to:

[0207] Receive interference-related information fed back from the receiving device.

[0208] In one embodiment, the second communication interface 701 is specifically used for:

[0209] Receive the PUSCH and / or PUCCH sent by the receiving device, wherein the PUSCH and / or PUCCH contains the interference-related information.

[0210] In one embodiment, the second processor 702 is configured to:

[0211] Using the first information, optimize the MIMO precoding matrix.

[0212] It should be noted that the specific processing procedures of the second processor 702 and the second communication interface 701 can be understood by referring to the above method.

[0213] Of course, in practical applications, the various components in the transmitting device 700 are coupled together through the bus system 704. It can be understood that the bus system 704 is used to realize the connection and communication between these components. In addition to the data bus, the bus system 704 also includes a power bus, a control bus, and a status signal bus. However, for clarity, all buses are labeled as bus system 704 in Figure 7.

[0214] The second memory 703 in this embodiment is used to store various types of data to support the operation of the transmitting device 700. Examples of such data include any computer program used to operate on the transmitting device 700.

[0215] The methods disclosed in the embodiments of this application can be applied to the second processor 702, or implemented by the second processor 702. The second processor 702 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method can be completed by the integrated logic circuit of the hardware or by instructions in the form of software in the second processor 702. The second processor 702 may be a general-purpose processor, a DSP, or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The second processor 702 can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of this application. The general-purpose processor may be a microprocessor or any conventional processor, etc. The steps of the methods disclosed in the embodiments of this application can be directly manifested as being executed by a hardware decoding processor, or being executed by a combination of hardware and software modules in the decoding processor. The software modules may be located in a storage medium, which is located in the second memory 703. The second processor 702 reads the information in the second memory 703 and completes the steps of the aforementioned method in combination with its hardware.

[0216] In an exemplary embodiment, the transmitting device 700 may be implemented by one or more ASICs, DSPs, PLDs, CPLDs, FPGAs, general-purpose processors, controllers, MCUs, microprocessors, or other electronic components to perform the aforementioned method.

[0217] It is understood that the memories (first memory 603, second memory 703) in the embodiments of this application can be volatile memory or non-volatile memory, or both. Non-volatile memory can be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), ferromagnetic random access memory (FRAM), flash memory, magnetic surface memory, optical disc, or compact disc read-only memory (CD-ROM); magnetic surface memory can be disk storage or magnetic tape storage. Volatile memory can be random access memory (RAM), which is used as an external cache. By way of example, but not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), Synchronous Static Random Access Memory (SSRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic Random Access Memory (SDRAM), Double Data Rate Synchronous Dynamic Random Access Memory (DDRSDRAM), Enhanced Synchronous Dynamic Random Access Memory (ESDRAM), SyncLink Dynamic Random Access Memory (SLDRAM), and Direct Rambus Random Access Memory (DRRAM).The memories described in the embodiments of this application are intended to include, but are not limited to, these and any other suitable types of memories.

[0218] In an exemplary embodiment, this application also provides a storage medium, namely a computer storage medium, specifically a computer-readable storage medium. For example, it may include a first memory 603 storing a computer program, which can be executed by a first processor 602 of a receiving device 600 to complete the steps described in the aforementioned receiving device-side method. Another example is a second memory 703 storing a computer program, which can be executed by a second processor 702 of a transmitting device 700 to complete the steps described in the aforementioned transmitting device-side method. The computer-readable storage medium may be a memory such as FRAM, ROM, PROM, EPROM, EEPROM, Flash Memory, magnetic surface memory, optical disc, or CD-ROM.

[0219] In an exemplary embodiment, this application also provides a computer program product, including a computer program that can be executed by a first processor 602 of a receiving device 600 to complete the steps of the aforementioned receiving device-side method, or the computer program can be executed by a second processor 702 of a transmitting device 700 to complete the steps of the aforementioned transmitting device-side method.

[0220] To implement the method provided in the embodiments of this application, the embodiments of this application also provide an information transmission system, as shown in FIG8, which includes a receiving device 801 and a transmitting device 802.

[0221] It should be noted that the specific processing procedures of the receiving device 801 and the transmitting device 802 have been described in detail above and will not be repeated here.

[0222] It should be noted that terms such as "first" and "second" are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0223] Furthermore, the technical solutions described in the embodiments of this application can be combined arbitrarily without conflict.

[0224] The above description is merely a preferred embodiment of this application and is not intended to limit the scope of protection of this application.

Claims

1. An information transmission method, applied to a receiving device, comprising: Feedback of first information to the transmitting device, wherein the first information characterizes the reception space characteristics of layer L within a symbol, where L is an integer greater than or equal to 2.

2. The method according to claim 1, wherein the step of feeding back the first information to the transmitting device includes one or more of the following: Feedback to the transmitting device the codebook parameter information of the L-layer received beam within one symbol; A reference signal is transmitted to the transmitting device, the relevant information of which is associated with the L-layer receive space characteristics within a symbol.

3. The method according to claim 2, wherein the codebook parameter information includes the codebook's identification information.

4. The method according to claim 2 or 3, wherein the transmitting device feeds back the codebook parameter information of the L-layer received beam, including: When sending a Channel Status Information (CSI) report to the transmitting device, the codebook parameter information of the L-layer received beam is also sent to the transmitting device.

5. The method according to any one of claims 1 to 4, wherein the value of L is related to the number of points in the Fast Fourier Transform (FFT).

6. The method according to any one of claims 1 to 5, further comprising: The receiving end sends back interference-related information to the transmitting device.

7. The method according to claim 6, wherein the interference-related information includes an interference correlation matrix or elements therein.

8. The method according to claim 6 or 7, wherein feeding back interference-related information from the receiving end to the transmitting device includes: The transmitting device sends a Physical Uplink Shared Channel (PUSCH) and / or a Physical Uplink Control Channel (PUCCH), wherein the PUSCH and / or PUCCH contain the interference-related information.

9. The method according to any one of claims 1 to 5, wherein the receiving space characteristics of each layer include one or more of the following: Parameters of the antenna element associated with the receiving beam; Identification of the receiving beam; Reference signal and / or channel associated with the received beam.

10. An information transmission method, applied to a transmitting device, comprising: The first information fed back by the receiving device is characterized by the receiving spatial characteristics of layer L within a symbol, where L is an integer greater than or equal to 2.

11. The method according to claim 10, wherein the first information received by the receiving device includes one or more of the following: Receive the codebook parameter information of the L-layer received beam within one symbol fed back by the receiving device; The receiving device receives a reference signal, the relevant information of which is associated with the L-layer receiving spatial characteristics within a symbol.

12. The method according to claim 11, wherein the codebook parameter information includes codebook identification information.

13. The method according to claim 11 or 12, wherein receiving the codebook parameter information of the L-layer received beam fed back by the receiving device includes: When receiving the CSI report from the receiving device, the codebook parameter information of the L-layer received beam is also received from the receiving device.

14. The method according to any one of claims 10 to 13, wherein the value of L is associated with the number of FFT points.

15. The method according to any one of claims 10 to 14, further comprising: Receive interference-related information fed back from the receiving device.

16. The method according to claim 15, wherein the interference-related information comprises an interference correlation matrix or elements thereof.

17. The method according to claim 15 or 16, wherein the interference-related information fed back by the receiving device includes: Receive the PUSCH and / or PUCCH sent by the receiving device, wherein the PUSCH and / or PUCCH contains the interference-related information.

18. The method according to any one of claims 10 to 14, wherein the receiving space characteristics of each layer include one or more of the following: Parameters of the antenna element associated with the receiving beam; Identification of the receiving beam; Reference signal and / or channel associated with the received beam.

19. An information transmission device, comprising: The transmitting unit is used to feed back first information to the transmitting device. The first information represents the reception space characteristics of layer L within a symbol, where L is an integer greater than or equal to 2.

20. An information transmission device, comprising: The receiving unit is used to receive first information fed back by the receiving device. The first information characterizes the receiving space characteristics of L layers within a symbol, where L is an integer greater than or equal to 2.

21. A receiving device, comprising: A first processor and a first communication interface; wherein... The first communication interface is used to feed back first information to the transmitting device. The first information represents the reception space characteristics of layer L within a symbol, where L is an integer greater than or equal to 2.

22. A transmitting device, comprising: A second processor and a second communication interface; wherein... The second communication interface is used to receive first information fed back by the receiving device. The first information characterizes the receiving space characteristics of layer L within a symbol, where L is an integer greater than or equal to 2.

23. A receiving device, comprising: A first processor and a first memory for storing computer programs capable of running on the processor. Wherein, when the first processor is used to run the computer program, it performs the steps of the method according to any one of claims 1 to 9.

24. A transmitting device, comprising: A second processor and a second memory for storing computer programs that can run on the processor. Wherein, when the second processor is used to run the computer program, it performs the steps of the method according to any one of claims 10 to 18.

25. A storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the steps of the method according to any one of claims 1 to 9, or implements the steps of the method according to any one of claims 10 to 18.

26. A computer program product comprising a computer program that, when executed by a processor, implements the steps of the method according to any one of claims 1 to 9, or implements the steps of the method according to any one of claims 10 to 18.

Images