Information transmission method and device, storage medium and program product

Abstract

The embodiment of the invention provides an information transmission method and device, a storage medium and a program product, relates to the technical field of communication, and is used for reducing the transmission resource overhead of a sounding reference signal. The method is applied to a first node, and comprises the following steps: acquiring channel information of a first port group; processing the channel information of the first port group to obtain first feedback information; sending first feedback information to the second node, and sending a sounding reference signal to the second node through the second port group; wherein the first port group is a port set of the first node, and the second port group is a subset of the port set; or, the first port group is a subset of the port set of the first node, and the second port group is a complementary set of the first port group.

Description

Technical Field

[0001] The present disclosure relates to the field of communication technologies, and in particular, to an information transmission method, apparatus, storage medium, and program product. Background Art

[0002] In a time division duplexing (TDD) system of wireless communication, the uplink and downlink channels are reciprocal, which enables the sounding reference signal (SRS) from the terminal side to be effectively utilized to obtain high-precision channel information. However, with the increase in the number of terminals and the number of antenna ports in the cell, the transmission resource overhead for SRS transmission will increase significantly, thereby resulting in insufficient uplink service transmission resources and ultimately affecting the uplink experience rate of users. Summary of the Invention

[0003] Embodiments of the present disclosure provide an information transmission method, apparatus, storage medium, and program product for reducing the transmission resource overhead of sounding reference signals.

[0004] To achieve the above object, the present disclosure adopts the following technical solutions.

[0005] In a first aspect, there is provided an information transmission method applied to a first node, including:

[0006] Obtaining channel information of a first port group;

[0007] Processing the channel information of the first port group to obtain first feedback information;

[0008] Sending the first feedback information to a second node, and sending a sounding reference signal to the second node through a second port group; wherein, the first port group is a set of ports of the first node, and the second port group is a subset of the set of ports; or, the first port group is a subset of the set of ports of the first node, and the second port group is a complement of the first port group.

[0009] In a second aspect, there is provided an information transmission method applied to a second node, including:

[0010] Receiving the first feedback information sent by the first node and the sounding reference signal sent by the first node based on the second port group, where the first feedback information is obtained by the first node after processing the channel information of the first port group, the first port group is a set of ports of the first node, and the second port group is a subset of the set of ports; or, the first port group is a subset of the set of ports of the first node, and the second port group is a complement of the first port group;

[0011] Measuring the sounding reference signal to obtain channel information of the second port group;

[0012] Obtain the channel information of the third port group based on the channel information of the second port group and the first feedback information; the third port group is the complement of the second port group.

[0013] In a third aspect, an information transmission method is provided, which is applied to a first node and includes:

[0014] Obtain the channel information of the first port group;

[0015] Send the channel information of the first port group to a second node, and send a sounding reference signal to the second node through the second port group; wherein, the first port group is the port set of the first node, and the second port group is a subset of the port set; or, the first port group is a subset of the port set of the first node, and the second port group is the complement of the first port group.

[0016] In a fourth aspect, an information transmission method is provided, which is applied to a second node and includes:

[0017] Receive the channel information of the first port group sent by the first node and the sounding reference signal sent by the first node based on the second port group; wherein, the first port group is the port set of the first node, and the second port group is a subset of the port set; or, the first port group is a subset of the port set of the first node, and the second port group is the complement of the first port group

[0018] Measure the sounding reference signal to obtain the channel information of the second port group;

[0019] Determine a data set based on the channel information of the first port group and the channel information of the second port group;

[0020] Obtain an encoder and a decoder based on the data set; wherein, the encoder is used for the first node to process the channel information of the first port group to obtain the first feedback information, and the decoder is used for the second node to obtain the channel information of the third port group based on the channel information of the second port group and the first feedback information, and the third port group is the complement of the second port group.

[0021] In a fifth aspect, an information transmission method is provided, which is applied to a first node and includes:

[0022] Obtain the channel information of the first port group and the channel information of the third port group;

[0023] Process the channel information of the first port group to obtain the first feedback information;

[0024] Send the first feedback information and the channel information of the third port group to the second node, and send the sounding reference signal to the second node through the second port group; wherein, the first port group is the port set of the first node, and the second port group is a subset of the port set; or, the first port group is a subset of the port set of the first node, and the second port group is the complement of the first port group; the third port group is the complement of the second port group.

[0025] In a sixth aspect, an information transmission method is provided, which is applied to a second node and includes:

[0026] Receive the first feedback information and the channel information of the third port group sent by the first node, and receive the sounding reference signal sent by the first node through the second port group, where the first feedback information is obtained by processing the channel information of the first port group, the first port group is the port set of the first node, and the second port group is a subset of the port set; or, the first port group is a subset of the port set of the first node, and the second port group is the complement of the first port group; the third port group is the complement of the second port group;

[0027] Measure the reference signal to obtain the channel information of the second port group;

[0028] Determine a data set based on the channel information of the third port group, the channel information of the second port group, and the first feedback information;

[0029] Obtain a decoder based on the data set; the decoder is used for the second node to obtain the channel information of the third port group based on the channel information of the second port group and the first feedback information.

[0030] In a seventh aspect, an information transmission method is provided, which is applied to a first node and includes:

[0031] Obtain the first channel information of the port set of the first node;

[0032] Process the first channel information of the port set to obtain the second feedback information;

[0033] Send the second feedback information to the second node, and send the sounding reference signal through the port set.

[0034] In an eighth aspect, an information transmission method is provided, which is applied to a second node and includes:

[0035] Receive the second feedback information sent by the first node, and receive the sounding reference signal sent by the first node through the port set of the first node, where the second feedback information is obtained by the first node processing the first channel information of the port set;

[0036] Measure the sounding reference signal to obtain the second channel information of the port set;

[0037] Obtain the first channel information of the port set based on the second channel information and the second feedback information of the port set.

[0038] In a ninth aspect, there is provided an information transmission method applied to a first node, including:

[0039] Obtain the first channel information of the port set of the first node;

[0040] Send the first channel information to a second node, and send a sounding reference signal through the port set.

[0041] In a tenth aspect, there is provided an information transmission method applied to a second node, including:

[0042] Receive the first channel information of the port set of the first node sent by the first node, and receive the sounding reference signal sent by the first node based on the port set of the first node;

[0043] Measure the reference signal to obtain the second channel information of the port set;

[0044] Determine a data set based on the first channel information and the second channel information of the port set;

[0045] Obtain an encoder and a decoder based on the data set; the encoder is used for the first node to process the first channel information to obtain the second feedback information, and the decoder is used for the second node to obtain the first channel information based on the second channel information and the second feedback information.

[0046] In an eleventh aspect, there is provided an information transmission method applied to a first node, including:

[0047] Obtain the first channel information of the port set of the first node;

[0048] Process the first channel information to obtain the second feedback information;

[0049] Send the first channel information and the second feedback information to a second node, and send a sounding reference signal through the port set.

[0050] In a twelfth aspect, there is provided an information transmission method applied to a second node, including:

[0051] Receive the first channel information and the second feedback information of the port set of the first node sent by the first node, and receive the sounding reference signal sent by the first node through the port set of the first node, where the second feedback information is obtained by processing the first channel information of the port set of the first node;

[0052] Measure the sounding reference signal to obtain the second channel information of the port set of the first node;

[0053] Determine a data set based on the first channel information, the second channel information, and the second feedback information;

[0054] Obtain a decoder based on the data set; the decoder is used for the second node to obtain the first channel information based on the second channel information and the second feedback information.

[0055] In a thirteenth aspect, there is provided a communication device applied to a first node, including:

[0056] An obtaining unit, configured to obtain channel information of a first port group;

[0057] A processing unit, configured to process the channel information of the first port group to obtain first feedback information;

[0058] A sending unit, configured to send the first feedback information to a second node, and send a sounding reference signal to the second node through a second port group; wherein, the first port group is a port set of the first node, and the second port group is a subset of the port set; or, the first port group is a subset of the port set of the first node, and the second port group is a complement of the first port group.

[0059] In a fourteenth aspect, there is provided a communication device applied to a second node, including:

[0060] A receiving unit, configured to receive the first feedback information sent by the first node and the sounding reference signal sent by the first node based on the second port group, wherein the first feedback information is obtained by the first node after processing the channel information of the first port group, the first port group is a port set of the first node, and the second port group is a subset of the port set; or, the first port group is a subset of the port set of the first node, and the second port group is a complement of the first port group;

[0061] A processing unit, configured to measure the sounding reference signal to obtain channel information of the second port group;

[0062] The processing unit is further configured to obtain channel information of a third port group based on the channel information of the second port group and the first feedback information; the third port group is a complement of the second port group.

[0063] In a fifteenth aspect, there is provided a communication device applied to a first node, including:

[0064] An obtaining unit, configured to obtain channel information of a first port group;

[0065] A sending unit, configured to send the channel information of the first port group to a second node, and send a sounding reference signal to the second node through a second port group; wherein, the first port group is a port set of the first node, and the second port group is a subset of the port set; or, the first port group is a subset of the port set of the first node, and the second port group is a complement of the first port group.

[0066] In the sixteenth aspect, a communication device is provided, which is applied to a second node and includes:

[0067] A receiving unit, configured to receive channel information of a first port group sent by a first node and a sounding reference signal sent by the first node based on a second port group; wherein, the first port group is a set of ports of the first node, and the second port group is a subset of the set of ports; or, the first port group is a subset of the set of ports of the first node, and the second port group is a complement of the first port group

[0068] A processing unit, configured to measure the sounding reference signal to obtain channel information of the second port group;

[0069] The processing unit is further configured to determine a data set based on the channel information of the first port group and the channel information of the second port group;

[0070] The processing unit is further configured to obtain an encoder and a decoder based on the data set; wherein, the encoder is used for the first node to process the channel information of the first port group to obtain first feedback information, and the decoder is used for the second node to obtain channel information of a third port group based on the channel information of the second port group and the first feedback information, and the third port group is a complement of the second port group.

[0071] In the seventeenth aspect, a communication device is provided, which is applied to a first node and includes:

[0072] An obtaining unit, configured to obtain channel information of a first port group and channel information of a third port group;

[0073] A processing unit, configured to process the channel information of the first port group to obtain first feedback information;

[0074] A sending unit, configured to send the first feedback information and the channel information of the third port group to the second node, and send a sounding reference signal to the second node through the second port group; wherein, the first port group is a set of ports of the first node, the second port group is a subset of the set of ports; or, the first port group is a subset of the set of ports of the first node, and the second port group is a complement of the first port group; the third port group is a complement of the second port group.

[0075] In the eighteenth aspect, a communication device is provided, which is applied to a second node and includes:

[0076] A receiving unit, configured to receive first feedback information sent by a first node and channel information of a third port group, and receive sounding reference signals sent by the first node through a second port group, where the first feedback information is obtained by processing channel information of a first port group, the first port group is a set of ports of the first node, the second port group is a subset of the set of ports; or, the first port group is a subset of the set of ports of the first node, the second port group is a complement of the first port group; the third port group is a complement of the second port group;

[0077] A processing unit, configured to measure the reference signal to obtain channel information of the second port group;

[0078] The processing unit is further configured to determine a data set based on the channel information of the third port group, the channel information of the second port group, and the first feedback information;

[0079] The processing unit is further configured to obtain a decoder based on the data set; the decoder is used for a second node to obtain channel information of the third port group based on the channel information of the second port group and the first feedback information.

[0080] In a nineteenth aspect, there is provided a communication device, applied to a first node, including:

[0081] An obtaining unit, configured to obtain first channel information of a set of ports of the first node;

[0082] A processing unit, configured to process the first channel information of the set of ports to obtain second feedback information;

[0083] A sending unit, configured to send the second feedback information to a second node, and send sounding reference signals through the set of ports.

[0084] In a twentieth aspect, there is provided a communication device, applied to a second node, including:

[0085] A receiving unit, configured to receive second feedback information sent by a first node, and receive sounding reference signals sent by the first node through the set of ports of the first node, where the second feedback information is obtained by the first node processing the first channel information of the set of ports;

[0086] A processing unit, configured to measure the sounding reference signal to obtain second channel information of the set of ports;

[0087] The processing unit is further configured to obtain the first channel information of the set of ports based on the second channel information of the set of ports and the second feedback information.

[0088] In a twenty-first aspect, there is provided a communication device, applied to a first node, including:

[0089] An obtaining unit, configured to obtain first channel information of a set of ports of the first node;

[0090] A transmitting unit, configured to send first channel information to a second node and send sounding reference signals through a set of ports.

[0091] In a twenty-second aspect, a communication device is provided, which is applied to a second node and includes:

[0092] A receiving unit, configured to receive the first channel information of the set of ports of the first node sent by the first node, and receive the sounding reference signals sent by the first node based on the set of ports of the first node;

[0093] A processing unit, configured to measure the reference signals to obtain second channel information of the set of ports;

[0094] The processing unit is further configured to determine a data set based on the first channel information and the second channel information of the set of ports;

[0095] The processing unit is further configured to obtain an encoder and a decoder based on the data set; the encoder is used for the first node to process the first channel information to obtain second feedback information, and the decoder is used for the second node to obtain the first channel information based on the second channel information and the second feedback information.

[0096] In a twenty-third aspect, a communication device is provided, which is applied to a first node and includes:

[0097] An obtaining unit, configured to obtain the first channel information of the set of ports of the first node;

[0098] A processing unit, configured to process the first channel information to obtain second feedback information;

[0099] A transmitting unit, configured to send the first channel information and the second feedback information to the second node and send sounding reference signals through the set of ports.

[0100] In a twenty-fourth aspect, a communication device is provided, which is applied to a second node and includes:

[0101] A receiving unit, configured to receive the first channel information and the second feedback information of the set of ports of the first node sent by the first node, and receive the sounding reference signals sent by the first node through the set of ports of the first node, where the second feedback information is obtained after processing the first channel information of the set of ports of the first node;

[0102] A processing unit, configured to measure the sounding reference signals to obtain second channel information of the set of ports of the first node;

[0103] The processing unit is further configured to determine a data set based on the first channel information, the second channel information and the second feedback information;

[0104] The processing unit is further configured to obtain a decoder based on the data set; the decoder is used for the second node to obtain the first channel information based on the second channel information and the second feedback information.

[0105] In a twenty-fifth aspect, a communication device is provided, including: a processor and a memory; the memory stores instructions executable by the processor; when the processor is configured to execute the instructions, the communication device implements any method provided in any one of the first aspect to the twelfth aspect as described above.

[0106] In a twenty-sixth aspect, a computer-readable storage medium is provided, which stores computer instructions. When the computer instructions run on a computer, the computer executes any method provided in any one of the first aspect to the twelfth aspect.

[0107] In a twenty-seventh aspect, a computer program product including computer instructions is provided. When the computer instructions run on a computer, the computer executes any method provided in any one of the first aspect to the twelfth aspect.

[0108] In the embodiments of the present disclosure, the first feedback information is sent to the second node, and the sounding reference signal is sent to the second node through the second port group. Since the first feedback information is obtained after processing the channel information of the first port group, and the first port group is the port set of the first node, and the second port group is a subset of the port set; or, the first port group is a subset of the port set of the first node, and the second port group is the complement of the first port group. The second node can obtain the channel information of the complement of the second port group based on the sounding reference signal and the first feedback information. In this way, the first node does not need to transmit the sounding reference signal based on the complement of the second port group, and the second node can obtain the channel information of the complement of the second port group, thereby reducing the transmission resource overhead of the sounding reference signal, and achieving the reduction of the transmission resource overhead of the sounding reference signal while ensuring the acquisition of high-precision channel information. Description of the Drawings

[0109] The drawings are used to provide a further understanding of the technical solutions of the present disclosure, and constitute a part of the specification. Together with the embodiments of the present disclosure, they are used to explain the technical solutions of the present disclosure, and do not constitute a limitation to the technical solutions of the present disclosure.

[0110] Figure 1 It is a schematic structural diagram of a communication system provided by an embodiment of the present disclosure;

[0111] Figure 2 It is a schematic flowchart of an information transmission method provided by an embodiment of the present disclosure;

[0112] Figure 3 It is a schematic diagram of an information processing process provided by an embodiment of the present disclosure;

[0113] Figure 4 Schematic flowchart of another information transmission method provided by an embodiment of the present disclosure;

[0114] Figure 5 Schematic flowchart of another information transmission method provided by an embodiment of the present disclosure;

[0115] Figure 6 Schematic flowchart of another information transmission method provided by an embodiment of the present disclosure;

[0116] Figure 7 Schematic flowchart of another information transmission method provided by an embodiment of the present disclosure;

[0117] Figure 8 Schematic flowchart of another information transmission method provided by an embodiment of the present disclosure;

[0118] Figure 9 Schematic flowchart of another information transmission method provided by an embodiment of the present disclosure;

[0119] Figure 10 Schematic diagram of another information processing process provided by an embodiment of the present disclosure;

[0120] Figure 11 Schematic flowchart of another information transmission method provided by an embodiment of the present disclosure;

[0121] Figure 12 Schematic flowchart of another information transmission method provided by an embodiment of the present disclosure;

[0122] Figure 13 Schematic flowchart of another information transmission method provided by an embodiment of the present disclosure;

[0123] Figure 14 Schematic flowchart of another information transmission method provided by an embodiment of the present disclosure;

[0124] Figure 15 Schematic flowchart of another information transmission method provided by an embodiment of the present disclosure;

[0125] Figure 16 Schematic diagram of the composition of a communication device provided by an embodiment of the present disclosure;

[0126] Figure 17 Schematic diagram of the composition of another communication device provided by an embodiment of the present disclosure;

[0127] Figure 18 Schematic diagram of the composition of another communication device provided by an embodiment of the present disclosure;

[0128] Figure 19Schematic diagram of the composition of another communication device provided by an embodiment of the present disclosure;

[0129] Figure 20 Schematic diagram of the composition of another communication device provided by an embodiment of the present disclosure;

[0130] Figure 21 Schematic diagram of the composition of another communication device provided by an embodiment of the present disclosure;

[0131] Figure 22 Schematic diagram of the composition of another communication device provided by an embodiment of the present disclosure;

[0132] Figure 23 Schematic diagram of the composition of another communication device provided by an embodiment of the present disclosure;

[0133] Figure 24 Schematic diagram of the composition of another communication device provided by an embodiment of the present disclosure;

[0134] Figure 25 Schematic diagram of the composition of another communication device provided by an embodiment of the present disclosure;

[0135] Figure 26 Schematic diagram of the composition of another communication device provided by an embodiment of the present disclosure;

[0136] Figure 27 Schematic diagram of the composition of another communication device provided by an embodiment of the present disclosure;

[0137] Figure 28 Schematic diagram of the structure of a communication device provided by an embodiment of the present disclosure. Detailed implementation manners

[0138] Next, the technical solutions in the embodiments of the present disclosure will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present disclosure.

[0139] Unless the context otherwise requires, throughout the specification and claims, the term "comprise" and other forms such as the third-person singular form "comprises" and the present participle form "comprising" are construed as open, inclusive meanings, that is, "including, but not limited to". In the description of the specification, the terms "one embodiment", "some embodiments", "exemplary embodiments", "example", "specific example" or "some examples", etc. are intended to indicate that the specific features, structures, materials or characteristics related to the embodiment or example are included in at least one embodiment or example of the present disclosure. The schematic representations of the above terms do not necessarily refer to the same embodiment or example. In addition, the described specific features, structures, materials or characteristics may be included in any one or more embodiments or examples in any suitable manner.

[0140] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present disclosure, unless otherwise specified, the meaning of "a plurality" is two or more.

[0141] In the embodiments of the present disclosure, words such as "exemplary" or "for example" are used to represent examples, illustrations or explanations. Any embodiment or design solution described as "exemplary" or "for example" in the embodiments of the present disclosure should not be construed as being more preferred or having more advantages than other embodiments or design solutions. Rather, the use of words such as "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0142] In addition, the use of "based on" means open and inclusive, because a process, step, calculation or other action "based on" one or more of the said conditions or values may in practice be based on additional conditions or values beyond the said ones.

[0143] In a wireless communication network, the network side is responsible for sending channel state information-reference signals (CSI-RS), and each antenna port (hereinafter referred to as a port) on the terminal side receives these CSI-RS and measures channel information. These ports on the terminal side are not only used to receive CSI-RS sent by the network side, but also used to send sounding reference signals to the network side. Specifically, CSI-RS is used for the terminal side to measure downlink channel information, while SRS is used for the network side to measure uplink channel information. In a time division duplex system, the uplink channel measured by the network side and the downlink channel measured by the terminal side are reciprocal. For example, assume that the terminal side is equipped with 4 ports. Then, the uplink channel of port 0 measured by the network side will be equivalent to the downlink channel of port 0 measured by the terminal side, the uplink channel of port 1 measured by the network side is equivalent to the downlink channel of port 1 measured by the terminal side, and so on. The uplink channels of ports 2 and 3 measured by the network side are also respectively equivalent to the downlink channels of ports 2 and 3 measured by the terminal side. This reciprocity provides a basis for reducing the transmission resource overhead occupied by SRS.

[0144] To reduce the transmission resource overhead of SRS, in related technologies, the transmission resource overhead of SRS is mainly reduced by optimizing in the time domain and frequency domain dimensions. However, an information transmission method provided by the present disclosure starts from the spatial domain dimension and proposes a method for reducing the transmission resource overhead of SRS, and this method can be combined with the time-frequency domain optimization technology in related technologies to achieve more efficient resource utilization.

[0145] The solutions of the embodiments of the present disclosure will be introduced below with reference to the accompanying drawings.

[0146] The technical solutions provided by the embodiments of the present disclosure can be applied to various mobile communication networks. For example, NR mobile communication networks adopting the fifth generation mobile networks (5G) technology, future mobile communication networks (such as 6G wireless communication systems), or various communication convergence systems, etc. The embodiments of the present disclosure do not limit this.

[0147] In the embodiments of the present disclosure, a mobile communication network (including but not limited to the third-generation 3G, fourth-generation 4G, fifth-generation 5G, and future mobile communication networks, such as the sixth-generation mobile communication network 6G) may include network-side devices (e.g., including but not limited to base stations) and receiving-side devices (e.g., including but not limited to terminals). It should be understood that, in this example, for instance, in the downlink, the first communication node (which may also be referred to as the first communication node device, the first node) may be a base station-side device, and the second communication node (which may also be referred to as the second communication node device, the second node) may be a terminal-side device. In some examples, for instance, in the uplink, the first communication node may also be a terminal-side device, and the second communication node may also be a base station-side device. In some examples, for instance, in device-to-device communication between two communication nodes, both the first communication node and the second communication node may be base stations or terminals. Therefore, whether the first node and the second node are base stations or terminals needs to be determined according to the context.

[0148] Figure 1 The following shows a schematic structural diagram of a communication system provided by the embodiments of the present disclosure. As Figure 1 shown, the communication system includes but is not limited to a first node 110 and a second node 120. Among them. Wireless signals can be transmitted, received, and related interactions can occur between the first node 110 and the second node 120.

[0149] In a wireless communication scenario, the first node 110 communicates with the second node 120 via a wireless channel. For example, the first node 110 is a terminal and the second node 120 is a base station, and communication occurs between the terminal and the base station via a wireless channel. Another example is that the first node 110 is a terminal and the second node 120 is a wireless router, and communication occurs between the wireless router and the terminal via a wireless channel. Another example is that the first node 110 is a first base station and the second node 120 is a second base station, and communication occurs between the first base station and the second base station via a wireless channel. Another example is that the first node 110 is a first terminal and the second node 120 is a second terminal, and communication occurs between the first terminal and the second terminal via a wireless channel. Another example is that the first node 110 is a repeater and the second node 120 is a base station, and communication occurs between the base station and the repeater via a wireless channel. Another example is that the first node 110 is a terminal and the second node 120 is a repeater, and communication occurs between the repeater and the terminal via a wireless channel. Another example is that the first node 110 is a first repeater and the second node 120 is a second repeater, and communication occurs between the first repeater and the second repeater via a wireless channel. Another example is that the first node 110 is a base station and the second node 120 is a satellite, and communication occurs between the satellite and the base station via a wireless channel. Another example is that the first node 110 is a satellite and the second node 120 is a base station, and communication occurs between the base station and the satellite via a wireless channel. Another example is that the first node 110 is a terminal and the second node 120 is a satellite, and communication occurs between the satellite and the terminal via a wireless channel. Another example is that the first node 110 is a satellite and the second node 120 is a terminal, and communication occurs between the terminal and the satellite via a wireless channel. Another example is that the first node 110 is a ground device and the second node 120 is an aircraft, and communication occurs between the aircraft and the ground device via a wireless channel. Another example is that the first node 110 is a first aircraft and the second node 120 is a second aircraft, and communication occurs between the first aircraft and the second aircraft via a wireless channel.

[0150] In the present disclosure, the "first" node, "second" node, "first" mode, "second" mode, "first" method, "second" method, "first" matrix, "second" matrix, "first" part, "second" part, unless otherwise specified, are only used for descriptive distinction and do not represent any order of precedence or sequence.

[0151] In the present disclosure, the base station may be a base station in Long Term Evolution (LTE), Long Term Evolution Advanced (LTE-A), or an evolved Node B (eNB or eNodeB), a base station device in a 5G network, or a base station in a future communication system (such as 6G, etc.). The base station may include various macro base stations, micro base stations, home base stations, remote radio heads, reconfigurable intelligent surfaces (RISs), routers, Wireless Fidelity (WIFI) devices, or various network-side devices such as a primary cell and a secondary cell.

[0152] In the present disclosure, the terminal is a device with wireless transceiver functions, which can be deployed on land, including indoor or outdoor; it can also be deployed on water (such as a ship, etc.); it can also be deployed in the air (such as an airplane, a balloon, a satellite, etc.). The terminal may be a mobile phone, a tablet computer (Pad), a computer with wireless transceiver functions, a Virtual Reality (VR) terminal, an Augmented Reality (AR) terminal, a wireless terminal in industrial control, a wireless terminal in self-driving, a wireless terminal in remote medical, a wireless terminal in a smart grid, a wireless terminal in transportation safety, a wireless terminal in a smart city, a wireless terminal in a smart home, and so on. The embodiments of the present disclosure do not limit the application scenarios. The terminal may sometimes also be referred to as a user, a user equipment, an access terminal, a UE unit, a UE station, a mobile station, a mobile unit, a remote station, a remote terminal, a mobile device, a UE terminal, a wireless communication device, a UE agent, or a UE device, etc. The embodiments of the present disclosure do not limit this.

[0153] It should be understood that Figure 1 is an exemplary structural diagram, Figure 1 The number of devices included in the shown communication system is not limited. For example, the number of the first node and the second node is not limited. And, in addition to Figure 1 the devices shown, Figure 1 the shown communication system may also include other devices, which are not limited herein.

[0154] Next, as shown in Figure 2 the embodiments of the present disclosure provide an information transmission method, which is applied to a first node. The first node may be the first node 110 shown above, and the method may include the following steps: Figure 1 shown in

[0155] S101. Obtain the channel information of the first port group.

[0156] The first port group is a set of ports of the first node, or a subset of the set of ports of the first node.

[0157] The first port group may also have other names. For example, the first group of ports, and the embodiments of the present disclosure do not limit this.

[0158] In some embodiments, the first node obtains the channel information of the first port group by measuring CSI-RS.

[0159] S102. Process the channel information of the first port group to obtain first feedback information.

[0160] In some embodiments, after obtaining the channel information of the first port group, the first node may perform compression processing on the channel information of the first port group to obtain first feedback information. The feedback information may also have other names. For example, compressed information, and the embodiments of the present disclosure do not limit this.

[0161] As an example, the first node inputs the channel information of the first port group into an encoder for compression processing to obtain first feedback information.

[0162] In the embodiments of the present disclosure, the encoder and / or decoder may be implemented based on artificial intelligence algorithms (such as deep learning). The specific implementation manner can be flexibly selected. For example, both the encoder and the decoder are implemented using deep learning algorithms; or, the encoder uses traditional signal processing algorithms (such as compression algorithms based on NR Type I or Type II codebooks), while the decoder uses deep learning algorithms. This flexible architecture solution can find the best balance between traditional methods and modern artificial intelligence technologies according to actual requirements and computing resources, thereby improving the overall performance of the system.

[0163] S103. Send the first feedback information to the second node, and send a sounding reference signal to the second node through the second port group.

[0164] The first port group is a set of ports of the first node, and the second port group is a subset of the set of ports; or, the first port group is a subset of the set of ports of the first node, and the second port group is the complement of the first port group.

[0165] The second node may be the above Figure 1The second node 120 shown below. For ease of description, in the following embodiments, the first node is taken as the terminal and the second node is taken as the base station as an example to illustrate an information transmission method provided by the embodiments of the present disclosure.

[0166] The implementation steps of the embodiments of the present disclosure are as follows: First, the terminal side obtains the channel information of the first port group by measuring CSI-RS and uses this information as the input of the encoder module. Then, the encoder on the terminal side compresses the input channel information and feeds the compressed information back to the network side. At the same time, the terminal side sends SRS through the second port group, and the network side obtains the channel information of the second port group by measuring SRS. Subsequently, the network side uses the measured channel information of the second port group and the compressed information (channel information of all ports or some ports) fed back from the terminal side as the input of the decoder. Finally, the decoder on the network side outputs the reconstructed channel information of the third port group (the third port group is the complement of the second port group), thereby achieving high-precision recovery of the channel information of the third port group.

[0167] Among them, when the first port group is a subset of the port set of the first node and the second port group is the complement of the first port group, the third port group is the first port group. The first port group and the second port group are two non-overlapping subsets divided from all ports, and their union constitutes the complete port set. For example, assume that the terminal side is equipped with 4 ports, the first port group includes port 2 and port 3, and the second port group includes port 0 and port 1. As Figure 3 shown, it is a schematic diagram of an information processing process provided by the embodiments of the present disclosure. The terminal side obtains the channel information of all ports (numbered 0 to 3) by measuring CSI-RS and uses this information as the input of the encoder module. Then, the encoder on the terminal side compresses the channel information of ports 0 to 3 and feeds the compressed information back to the network side. At the same time, the terminal side sends SRS to the network side through ports 0 and 1, and the network side obtains the channel information of ports 0 and 1 by measuring SRS. Subsequently, the network side uses the measured channel information of ports 0 and 1 and the compressed information (channel of ports 0 to 3) fed back from the terminal side as the input of the decoder. Finally, the decoder on the network side outputs the reconstructed channel information of ports 2 and 3, thereby achieving high-precision recovery of the channel information of ports 2 and 3.

[0168] Through the above process, the terminal side only needs to send SRS to the network side through the second port group. The network side uses the measured channel information of the second port group and combines it with the low-overhead compressed information fed back from the terminal side to efficiently reconstruct the channel information of the third port group. This method not only realizes the complete acquisition of the channel information of all ports but also reduces the transmission resource overhead of SRS, thereby optimizing the system resource utilization efficiency.

[0169] Based on Figure 2 In the embodiment shown, the first node sends first feedback information to the second node and sends a sounding reference signal to the second node through a second port group. Since the first feedback information is obtained by processing the channel information of a first port group, where the first port group is a set of ports of the first node and the second port group is a subset of the set of ports; or the first port group is a subset of the set of ports of the first node and the second port group is the complement of the first port group, the second node can obtain the channel information of the complement of the second port group (i.e., the third port group) based on the sounding reference signal and the first feedback information. Thus, the first node does not need to transmit a sounding reference signal based on the complement of the second port group (i.e., the third port group), and the second node can obtain the channel information of the complement of the second port group (i.e., the third port group), thereby reducing the transmission resource overhead of the sounding reference signal and achieving the reduction of the transmission resource overhead of the sounding reference signal while ensuring the acquisition of high-precision channel information.

[0170] The relationship between the third port group and the first port group is: the third port group is a subset of the first port group (when the first port group is a set of ports of the first node and the second port group is a subset of this set of ports) or the third port group is equal to the first port group (when the first port group is a subset of the set of ports of the first node and the second port group is the complement of the first port group).

[0171] In some embodiments, which ports the terminal side selects to send SRS (i.e., the information of the second port group), and which ports (all ports or the third port group) of the channel information are selected as the input of the encoder can be predefined (e.g., fixedly or by default select the first half of the ports with earlier numbers to send SRS and select the channel information of all ports as the input of the encoder) or indicated by the network side. That is, in the embodiments of the present disclosure, the first port group and the second port group are predefined or indicated by the second node.

[0172] When using network-side indication, one indication method includes: the network side sends an index value to the terminal side, and the terminal side can determine the ports for sending SRS and the ports corresponding to the channel information of the encoder input by querying a predefined configuration table. For example, for a terminal device configured with 4 ports (numbered 0 to 3), when the network side sends the index value 5, the terminal side can determine after querying Table 1 that the ports for sending SRS are port 0 and port 3, and the ports corresponding to the channel information of the encoder input are all ports (numbered 0 to 3). This index-based configuration method maximizes the reduction of signaling quantity while ensuring configuration flexibility.

[0173] That is to say, in the case where the first port group and the second port group are indicated by the second node, the method further includes:

[0174] Receive a first index value sent by a second node, where the first index value is used to indicate ports in a first port group and ports in a second port group.

[0175] As an example, the association relationship between the first index value, the ports in the first port group, and the ports in the second port group can be as shown in Table 1 below:

[0176] Table 1

[0177]

[0178]

[0179] In the above implementation steps, the network side can dynamically indicate the ports for sending SRS and the ports corresponding to the channel information input to the encoder through downlink control information (DCI). The advantage is that the network side can flexibly adjust based on actual factors such as real-time reconstruction performance and uplink feedback overhead, thereby optimizing system efficiency. That is to say, the first index value is carried in the downlink control information.

[0180] It should be noted that the network side should not indicate ports that do not support uplink transmission as the ports for sending SRS. For example, assume that the terminal side is equipped with 4 ports, but only ports 0 and 1 support signal transmission functions. Then the network side can only configure index value 0 or 1, and will not configure index values 2 to 11 for the terminal side. Based on this, in some embodiments, the ports in the second port group indicated by the first index value are ports that support uplink transmission.

[0181] In the above implementation steps, when the encoder adopts a traditional signal processing algorithm (such as a compression algorithm based on the NR Type II codebook), it is necessary to obtain the Rank value corresponding to the compressed information output by the encoder (the physical meaning of this value can be referred to the definition in the prior art), and this Rank value can be determined by a predefined method or dynamically indicated by the network side. When the network side indication method is adopted, one indication method includes: the network side sends an index value to the terminal side, and the terminal side jointly determines the port for sending SRS, the port corresponding to the channel information input to the encoder, and the Rank value corresponding to the compressed information output by the encoder by querying a predefined configuration table. For example, for a terminal device configured with 4 ports (numbered 0 to 3), when the network side issues an index value of 7, after the terminal side queries Table 2, it can be determined that: the ports for sending SRS are port 0 and port 3, the ports corresponding to the channel information input to the encoder are all ports (numbered 0 to 3), and the Rank value corresponding to the compressed information output by the encoder takes the value of 2. Similarly, this index-based configuration method minimizes the signaling quantity while ensuring configuration flexibility; in addition, it also allows the network side to dynamically adjust the Rank value corresponding to the compressed information output by the encoder based on actual factors such as real-time reconstruction performance, thereby optimizing the system efficiency.

[0182] Based on the above description, in some embodiments, the first node obtains the RANK value corresponding to the first feedback information.

[0183] Wherein, the RANK value is predefined or indicated by the second node.

[0184] In some embodiments, when the RANK value is indicated by the second node, obtaining the RANK value corresponding to the first feedback information includes:

[0185] Receiving a second index value sent by the second node, wherein the second index value is used to indicate the RANK value, the ports in the first port group, and the ports in the second port group.

[0186] As an example, the association relationship between the second index value, the RANK value, the ports in the first port group, and the ports in the second port group can be as shown in Table 2 below:

[0187] Table 2

[0188]

[0189]

[0190] In the embodiments of the present disclosure, in order to ensure that the encoder on the terminal side and the decoder on the network side can work together efficiently, the relative power relationship between different port channel information as the encoder input should be consistent with the relative power relationship between different port channel information as the decoder input. To this end, the network side and the terminal side need to align the reference port, which is used for both parties to perform port-level power normalization processing. One way is to predefine it; alternatively, the network side explicitly indicates a port as the reference port, and this port should be one of the ports for the terminal side to send SRS. For example, based on Table 1 and Table 2, the indication information of the reference port is added. In this way, through an index value, the port for sending SRS, the port corresponding to the channel information input to the encoder, the Rank value corresponding to the encoder output (optional), and the reference port can be jointly indicated. This solution can effectively ensure the consistency of power normalization, thereby improving the matching accuracy of encoding and decoding.

[0191] Based on the above description, in some embodiments, the second port group includes a reference port, and the reference port is used for the first node to perform power normalization processing on the obtained channel information. The reference port is predefined or indicated by the second node.

[0192] In some embodiments, when the reference port is indicated by the second node, the second index value is further used to indicate the reference port.

[0193] In the embodiments of the present disclosure, for non-periodic SRS transmission and channel state information reference signal (CSI-RS) reception, the network side can flexibly configure non-periodic SRS transmission resources and CSI-RS reception resources through dynamic signaling. Among them, the terminal side obtains the channel information as the encoder input by receiving and measuring CSI-RS. For example, the network side sends an index value to the terminal side, and the terminal side looks up the table according to this index value to obtain the corresponding SRS transmission resources and CSI-RS reception resources. For example, when the index value sent by the network side is 1, the terminal side can determine to use the second SRS resource and CSI resource group by querying the pre-configured table (such as Table 2). The specific configurations of the first SRS resource to the fourth SRS resource and the CSI resource group can be notified to the terminal side in advance by the network side. These resource configuration information includes time-domain parameters (such as occupied orthogonal frequency division multiplexing (OFDM) symbols), frequency-domain parameters (such as occupied resource blocks), and code-domain parameters (such as reference sequences), etc., to ensure the flexibility and accuracy of resource allocation. This index-based resource configuration method improves the system configuration efficiency.

[0194] Based on the above description, in some embodiments, the first node receives first indication information sent by the second node. The first indication information is used to indicate the transmission resource of the sounding reference signal and the reception resource of the channel state information reference signal. The channel state information reference signal is used for the first node to obtain the channel information of the first port group.

[0195] In some embodiments, the first indication information includes a third index value, and the third index value is used to indicate the transmission resource of the sounding reference signal and the reception resource of the channel state information reference signal.

[0196] As an example, the association relationship between the third index value, the transmission resource of the sounding reference signal, and the reception resource of the channel state information reference signal can be as shown in Table 3 below:

[0197] Table 3

[0198]

[0199] In some embodiments, the network side can instruct the terminal side to transmit SRS on the ports corresponding to the channel information output by the decoder (i.e., the third port group, such as ports 2 and 3), and then the network side measures the channel information of these ports; alternatively, the network side can instruct the terminal side to report the channel information of the ports corresponding to the channel information output by the decoder (i.e., the third port group, such as ports 2 and 3). Then, the network side uses the channel information measured based on SRS or the channel information reported by the terminal side as the target of the output of the decoder (i.e., the channel information of the third port group). By comparing the above channel information with the output of the decoder, the network side can achieve real-time monitoring and evaluation of the reconstruction performance. This method can effectively ensure the accuracy of channel information reconstruction and provide data support for system optimization.

[0200] If the terminal reports the channel information of the ports (i.e., the third port group) corresponding to the channel information output by the decoder, a channel information feedback scheme is as follows: 1) Joint reporting mechanism: The channel information and the compression information (i.e., the output of the encoder) are transmitted through the same message to improve the feedback efficiency. 2) Spatial / frequency domain sampling: The channel information reported by the terminal is sampled in the spatial domain (base station ports) and / or the frequency domain (resource units) to reduce the feedback overhead. Assuming that the dimension of the original channel information is [number of terminal ports × number of base station ports × number of frequency domain resource units], the terminal side can flexibly select the following sampling methods: 1) Base station port sampling: Only report the channel information of some base station ports (e.g., uniformly select 16 from 32 ports). 2) Frequency domain resource unit sampling: Only report the channel information of some frequency domain resource units (e.g., uniformly select 64 from 272 units). 3) Joint sampling: Reduce the number of base station ports and frequency domain resource units at the same time (e.g., select 16 base station ports and 64 frequency domain units). For example, if the dimension of the original channel information is [2, 32, 272], the sampling dimensions that the terminal can report include: [2, 16, 272] (downsampling of base station ports) or [2, 32, 64] (downsampling of frequency domain resources) or [2, 16, 64] (joint downsampling). The sampling strategy is recommended to use uniform (equidistant) sampling to maintain the integrity of the channel characteristics. The sampling interval can be predefined or configured by the network side to adapt to different channel environments. This scheme can significantly reduce the feedback overhead while still ensuring the monitoring accuracy of the channel information.

[0201] Based on this, in some embodiments, the first node receives second indication information sent by the second node, and the second indication information is used to instruct the first node to report the channel information of the third port group, or to instruct the first node to send a sounding reference signal through the third port group, and the third port group is the complement of the second port group.

[0202] The first node can, based on the second indication information, send the channel information of the third port group to the second node, and / or send a sounding reference signal through the third port group.

[0203] In some embodiments, the first node can send the channel information of the third port group and the first feedback information to the second node. That is, the channel information of the third port group and the first feedback information are carried in the same message.

[0204] In some embodiments, in order to reduce the feedback resource overhead, the channel information of the third port group is the channel information after spatial downsampling and / or frequency domain downsampling. The sampling strategy of the channel information of the third port group includes uniform sampling, and the sampling interval of the channel information of the third port group is predefined or configured for the second node.

[0205] In some embodiments, such as Figure 4As shown in the figure, an embodiment of the present disclosure further provides another information transmission method, which is applied to a second node. The method may include the following steps:

[0206] S201. Receive the first feedback information sent by the first node and the sounding reference signal sent by the first node based on the second port group.

[0207] Wherein, the first feedback information is obtained by the first node after processing the channel information of the first port group. The first port group is a set of ports of the first node, and the second port group is a subset of the set of ports; or, the first port group is a subset of the set of ports of the first node, and the second port group is the complement of the first port group.

[0208] For the description of each item of information in step S201, reference may be made to the corresponding description in the embodiment shown above, which will not be elaborated here. Figure 2 shown in the figure.

[0209] S202. Measure the sounding reference signal to obtain the channel information of the second port group.

[0210] S203. Obtain the channel information of the third port group based on the channel information of the second port group and the first feedback information.

[0211] The network side uses the measured channel information of the second port group and the compressed information fed back by the terminal side as the input of the decoder. Finally, the decoder on the network side outputs the reconstructed channel information of the third port group, thereby achieving high-precision recovery of the channel information of the third port group. In this way, the first node does not need to transmit the sounding reference signal based on the complement of the second port group (i.e., the third port group), and the second node can obtain the channel information of the complement of the second port group (i.e., the third port group), thereby reducing the transmission resource overhead of the sounding reference signal and achieving the reduction of the transmission resource overhead of the sounding reference signal while ensuring the acquisition of high-precision channel information.

[0212] In some embodiments, the second node sends a first index value to the first node, and the first index value is used to indicate the ports in the first port group and the ports in the second port group.

[0213] In some embodiments, the first index value is carried in the downlink control information.

[0214] In some embodiments, the ports in the second port group indicated by the first index value are ports supporting uplink transmission.

[0215] In some embodiments, the second node sends a second index value to the first node, wherein the second index value is used to indicate the RANK value, the ports in the first port group, and the ports in the second port group.

[0216] In some embodiments, the second port group includes a reference port, and the reference port is used for the first node to perform power normalization processing on the obtained channel information. The reference port is predefined or indicated by the second node.

[0217] In some embodiments, when the reference port is indicated by the second node, the second index value is further used to indicate the reference port.

[0218] In some embodiments, the second node sends first indication information to the first node, and the first indication information is used to indicate the transmission resource of the sounding reference signal and the reception resource of the channel state information reference signal. The channel state information reference signal is used for the first node to obtain the channel information of the first port group.

[0219] As an example, the first indication information includes a third index value, and the third index value is used to indicate the transmission resource of the sounding reference signal and the reception resource of the channel state information reference signal.

[0220] In some embodiments, the second node sends second indication information to the first node, and the second indication information is used to indicate the first node to report the channel information of the third port group, or is used to indicate the first node to send a sounding reference signal through the third port group. The third port group is the complement of the second port group.

[0221] In some embodiments, the second node receives the channel information of the third port group and the first feedback information sent by the first node, and the channel information of the third port group and the first feedback information are carried in the same message.

[0222] In some embodiments, the channel information of the third port group is the channel information that has been downsampled in the spatial domain and / or the frequency domain.

[0223] In some embodiments, the sampling strategy of the channel information of the third port group includes uniform sampling, and the sampling interval of the channel information of the third port group is predefined or configured by the second node.

[0224] The above embodiments are described by taking reducing the transmission resources of the sounding reference signal as an example. In some embodiments, when the encoder and / or decoder are implemented using deep learning techniques, data collection needs to be performed first, and the model parameters of the encoder and / or decoder are trained based on the collected data. This process is a key step to ensure that the deep learning model can accurately learn the channel characteristics and achieve efficient encoding and decoding. If the network side is responsible for training the encoder and / or decoder, the network side needs to obtain the data for training.

[0225] In order for the training data set on the network side to comprehensively cover the channel characteristics, thereby providing a high-quality training basis for the deep learning model and ensuring that the model can accurately learn and reconstruct the channel information, such asFigure 5 As shown in the figure, an embodiment of the present disclosure further provides an information transmission method, which is applied to a first node. The method may include the following steps:

[0226] S301. Obtain the channel information of the first port group.

[0227] For the description of obtaining the channel information of the first port group, reference may be made to the corresponding description in the above Figure 2 shown embodiment, which will not be elaborated here.

[0228] S302. Send the channel information of the first port group to the second node, and send a sounding reference signal to the second node through the second port group.

[0229] Wherein, the first port group is a set of ports of the first node, and the second port group is a subset of the set of ports; or, the first port group is a subset of the set of ports of the first node, and the second port group is the complement of the first port group.

[0230] From the above description, one way is as follows: 1) The terminal side, according to the indication of the network side, uses some ports (the ports corresponding to the decoder input, that is, the second port group) to send SRS; 2) The terminal side measures and reports the channel information of all or some ports (that is, the first port group) to the network side. 3) The network side can configure spatial consistency in the following ways: include SRS configuration information in the configuration message for channel information reporting, or include channel information reporting configuration information in the SRS configuration message, to ensure that the terminal side maintains spatial consistency of relevant ports when sending SRS and receiving CSI-RS. 4) The network side obtains the corresponding channel information by measuring SRS, and combines the channel information reported by the terminal side to construct a training data set. For example, in order to train an encoder and a decoder as shown in Figure 3 the figure, the channel information of all 4 ports (the first group of ports) reported by the terminal side can be used as the input of the encoder, the channel information of ports 0 and 1 (the second group of ports) based on SRS measurement and the output of the encoder can be used as the input of the decoder, and the output target (label) of the decoder is the channel information of ports 2 and 3 (the third group of ports) reported by the terminal side. Compared with the first way, this way constructs a training data set using the channel information reported by the terminal side, and has the additional advantage: it can avoid the influence of the channel estimation algorithm on the terminal side on the performance of the codec, thereby improving the reliability of the training data and the generalization ability of the model.

[0231] Combined with the above description, in some embodiments, the first node receives the configuration information for channel information reporting sent by the second node, and the configuration information for channel information reporting includes sounding reference signal configuration information; or, the first node receives the sounding reference signal configuration information sent by the second node, and the sounding reference signal configuration information includes the configuration information for channel information reporting.

[0232] Based on Figure 5 In the illustrated embodiment, the first node sends the channel information of the first port group to the second node and sends a sounding reference signal to the second node through the second port group, so that the second node can obtain the channel information of the second port group based on the sounding reference signal; and then determine a data set based on the channel information of the first port group and the channel information of the second port group; thus, an encoder and a decoder can be obtained based on the data set. In this way, compared with conventional methods (such as some methods that do not rely on the channel information feedback from the terminal side), the influence of the channel estimation algorithm on the terminal side on the performance of the codec can be avoided, thereby improving the reliability of the training data and the generalization ability of the model.

[0233] As an example, the conventional methods for implementing the collection of the training data set on the network side include: according to its hardware capabilities, the terminal side sends SRSs through all ports in a round-robin or non-round-robin, periodic or non-periodic manner according to the instructions of the network side. The network side then collects and measures the channel information of all ports and constructs a training data set based on this complete channel information. For example, in order to train an encoder and a decoder as Figure 3 shown, the channel information of all 4 ports can be used as the input of the encoder, and at the same time, the channel information of port 0 and port 1 and the output of the encoder can be used as the input of the decoder, while the output target (label) of the decoder is the channel information of port 2 and port 3.

[0234] In some embodiments, as Figure 6 shown, the embodiments of the present disclosure further provide another information transmission method, which is applied to the second node, and the method includes:

[0235] S401. Receive the channel information of the first port group sent by the first node and the sounding reference signal sent by the first node based on the second port group.

[0236] Wherein, the first port group is a set of ports of the first node, and the second port group is a subset of the set of ports; or, the first port group is a subset of the set of ports of the first node, and the second port group is the complement of the first port group.

[0237] That is, receive the channel information of all or part of the ports in the set of ports of the first node sent by the first node, and receive the sounding reference signal sent by the first node based on the second port group.

[0238] S402. Measure the sounding reference signal to obtain the channel information of the second port group.

[0239] S403. Determine a data set based on the channel information of the first port group and the channel information of the second port group.

[0240] The data set can have other names. For example, the training data set, and the embodiments of the present disclosure do not limit this.

[0241] S404. Obtain an encoder and a decoder based on the data set.

[0242] After obtaining the data set, the original encoder and the original decoder can be trained based on the data set to obtain the encoder and the decoder. In this way, the influence of the channel estimation algorithm on the terminal side on the performance of the codec can be avoided, thereby improving the reliability of the training data and the generalization ability of the model.

[0243] Among them, the encoder is used for the first node to process the channel information of the first port group to obtain the first feedback information, and the decoder is used for the second node to obtain the channel information of the third port group based on the channel information of the second port group and the first feedback information. The third port group is the complement of the second port group.

[0244] In some embodiments, after obtaining the encoder, the second node can send the encoder to the first node.

[0245] In some embodiments, the second node sends the configuration information of the channel information report to the first node. The configuration information of the channel information report includes the configuration information of the sounding reference signal; or,

[0246] The second node sends the configuration information of the sounding reference signal to the first node, and the configuration information of the sounding reference signal includes the configuration information of the channel information report.

[0247] The above embodiments are described by taking avoiding the influence of the channel estimation algorithm on the terminal side on the performance of the codec, thereby improving the reliability of the training data and the generalization ability of the model as an example. In some embodiments, in order to avoid the influence of the channel estimation algorithm implemented on the terminal side and the traditional signal compression algorithm on the performance of the decoder, thereby improving the reliability of the training data and the generalization ability of the decoder model, as Figure 7 shown, the embodiments of the present disclosure further provide another information transmission method, which is applied to the first node. The method may include the following steps:

[0248] S501. Obtain the channel information of the first port group and the channel information of the third port group.

[0249] Among them, the first port group is the port set of the first node, or a subset of the port set of the first node, and the third port group is a subset of the port set of the first node. When the first port group is a subset of the port set of the first node, the third port group is the first port group.

[0250] S502. Process the channel information of the first port group to obtain the first feedback information.

[0251] In some embodiments, the channel information of the first port group is compressed to obtain first feedback information.

[0252] As an example, the encoder compresses the channel information of the first port group to obtain first feedback information. Among them, the encoder can be implemented by using traditional signal processing algorithms (such as compression algorithms based on NR Type II codebooks).

[0253] S503. Send the first feedback information and the channel information of the third port group to the second node, and send the sounding reference signal to the second node through the second port group.

[0254] Among them, the first port group is the port set of the first node, and the second port group is a subset of the port set; alternatively, the first port group is a subset of the port set of the first node, and the second port group is the complement of the first port group; the third port group is the complement of the second port group.

[0255] When the encoder uses traditional signal processing algorithms (such as compression algorithms based on NR Type II codebooks), the following scheme can be adopted: 1) The terminal side, according to the network side indication, uses the second port group (i.e., the port corresponding to the channel information input to the decoder) to send SRS; 2) The terminal side measures and reports the channel information of the third port group (i.e., the port corresponding to the channel information output by the decoder) and the compressed information of the channel information of the first port group (it is recommended to set the Rank value of the compressed information to the number of ports corresponding to the original channel information); 3) The reporting method supports including the channel information of the third port group and the compressed information of the channel information of the first port group in a single channel information report message; 4) The network side can configure spatial consistency in the following ways: include SRS configuration information in the configuration message of the channel information report, or include channel information report configuration information in the SRS configuration message to ensure the spatial consistency of relevant ports when the terminal side sends SRS and receives CSI-RS. 5) The network side obtains the corresponding channel information by measuring SRS, and combines the channel information and compressed information reported by the terminal side to construct a training data set to train the decoder. For example, in order to train such as Figure 3For the decoder shown, the network side can use the channel information of ports 0 and 1 (the second set of ports) based on SRS measurement and the compressed information of the channel information of all 4 ports (the first port group) reported by the terminal side as the input of the decoder, and the output target (tag) of the decoder is the channel information of ports 2 and 3 (the third port group) reported by the terminal side. Compared with other methods, this method constructs a training dataset for training the decoder by using both the channel information reported by the terminal side and the compressed information of the channel information, which has additional advantages: it can avoid the influence of the channel estimation algorithm implemented on the terminal side and the traditional signal compression algorithm on the performance of the decoder, thereby improving the reliability of the training data and the generalization ability of the decoder model.

[0256] Combined with the above description, in some embodiments, the RANK value corresponding to the first feedback information is the number of ports corresponding to the channel information of the first port group.

[0257] In some embodiments, the first feedback information and the channel information of the third port group are carried in the same message.

[0258] In some embodiments, the first node receives the configuration information of the channel information report sent by the second node, and the configuration information of the channel information report includes the configuration information of the sounding reference signal; or,

[0259] The first node receives the sounding reference signal configuration information sent by the second node, and the sounding reference signal configuration information includes the configuration information of the channel information report.

[0260] Based on Figure 7 In the embodiments shown, the first node sends the compressed information of the channel information of all ports or some ports (i.e., the first feedback information) to the second node, and sends the channel information of some ports (i.e., the channel information of the third port group), and sends the sounding reference signal through another part of the ports (i.e., sends the sounding reference signal through the second port group), so that the second node can measure the reference signal to obtain the channel information of the second port group; then, based on the channel information of the third port group, the channel information of the second port group and the first feedback information, determine the dataset; thus, obtain the decoder based on the dataset. In this way, it can avoid the influence of the channel estimation algorithm implemented on the terminal side and the traditional signal compression algorithm on the performance of the decoder, thereby improving the reliability of the training data and the generalization ability of the decoder model.

[0261] In some embodiments, as Figure 8 shown, the embodiments of the present disclosure also provide another information transmission method, which is applied to the second node, and the method may include the following steps:

[0262] S601. Receive the first feedback information sent by the first node and the channel information of the third port group, and receive the sounding reference signal sent by the first node through the second port group.

[0263] Wherein, the first feedback information is obtained by processing the channel information of the first port group, the first port group is the port set of the first node, and the second port group is a subset of the port set; or, the first port group is a subset of the port set of the first node, and the second port group is the complement of the first port group; the third port group is the complement of the second port group.

[0264] S602. Measure the reference signal to obtain the channel information of the second port group.

[0265] S603. Determine a data set based on the channel information of the third port group, the channel information of the second port group, and the first feedback information.

[0266] That is, construct a data set based on the channel information of the third port group, the channel information of the second port group, and the first feedback information.

[0267] S604. Obtain a decoder based on the data set.

[0268] Wherein, the decoder is used for the second node to obtain the channel information of the third port group based on the channel information of the second port group and the first feedback information.

[0269] In this way, the second node (network side) simultaneously uses the channel information reported by the terminal side and the compressed information of the channel information to construct a training data set for training the decoder, which has additional advantages: it can avoid the influence of the channel estimation algorithm implemented on the terminal side and the traditional signal compression algorithm on the performance of the decoder, thereby improving the reliability of the training data and the generalization ability of the decoder model.

[0270] In some embodiments, the RANK value corresponding to the first feedback information is the number of ports corresponding to the channel information of the first port group.

[0271] In some embodiments, the first feedback information and the channel information of the third port group are carried in the same message.

[0272] In some embodiments, the second node sends configuration information for reporting channel information to the first node, and the configuration information for reporting channel information includes sounding reference signal configuration information; or,

[0273] The second node sends sounding reference signal configuration information to the first node, and the sounding reference signal configuration information includes configuration information for reporting channel information.

[0274] Figure 2The illustrated embodiments are described by taking reducing the transmission resource overhead of the sounding reference signal as an example for an information transmission method provided by the embodiments of the present disclosure. In some embodiments, to improve the accuracy of the channel information based on SRS measurement on the network side, such as Figure 9 As shown, the embodiments of the present disclosure further provide another information transmission method, which is applied to a first node. The method may include the following steps:

[0275] S701. Obtain first channel information of a port set of the first node.

[0276] S702. Process the first channel information of the port set to obtain second feedback information.

[0277] S703. Send the second feedback information to a second node, and send a sounding reference signal through the port set.

[0278] The steps of this embodiment are as follows: First, the terminal side obtains high-precision channel information (i.e., the first channel information) of all ports by measuring CSI-RS and uses this information as the input of the encoder module. Then, the encoder on the terminal side compresses the input high-precision channel information and feeds the compressed information back to the network side. At the same time, the terminal side sends SRS through all ports, and the network side obtains low-precision channel information of all ports by measuring SRS. Subsequently, the network side uses the measured low-precision channel information of all ports and the compressed information (of the high-precision channel information of all ports) fed back by the terminal side as the input of the decoder. Finally, the decoder on the network side outputs the high-precision channel information (reconstructed) of all ports, thereby realizing the restoration of the high-precision channel information of all ports. For example, assume that the terminal side is equipped with 4 ports, such as Figure 10 As shown, it is a schematic diagram of another information processing process provided by the embodiments of the present disclosure. The terminal side obtains high-precision channel information of all ports (numbered 0 to 3) by measuring CSI-RS and uses this information as the input of the encoder module. Then, the encoder on the terminal side compresses the high-precision channel information of ports 0 to 3 and feeds the compressed information back to the network side. At the same time, the terminal side sends SRS to the network side through ports 0 to 3, and the network side obtains low-precision channel information of ports 0 to 3 by measuring SRS. Subsequently, the network side uses the measured low-precision channel information of ports 0 to 3 and the compressed information (of the high-precision channel information of ports 0 to 3) fed back by the terminal side as the input of the decoder. Finally, the decoder on the network side outputs the reconstructed high-precision channel information of ports 0 to 3.

[0279] Through the above process, the network side can efficiently reconstruct the high-precision channel information of all ports based on the low-precision channel information of all ports obtained from SRS measurements and in combination with the low-overhead compression information (of the high-precision channel information of all ports) fed back by the terminal side. This method, with the assistance of the terminal side and at the cost of a relatively small feedback overhead, improves the accuracy of the channel measurement results obtained by the network side using SRS compared with the prior art.

[0280] In the embodiments of the present disclosure, the encoder and / or decoder can be implemented by means of artificial intelligence algorithms (such as deep learning). The specific implementation manner can be flexibly selected. For example, both the encoder and the decoder are implemented using deep learning algorithms; or, the encoder uses traditional signal processing algorithms (such as compression algorithms based on NR Type I or Type II codebooks), while the decoder is implemented using deep learning algorithms. This flexible architecture can find the best balance between traditional methods and modern artificial intelligence technologies according to actual requirements and computing resources, thereby improving the overall performance of the system.

[0281] In the above implementation steps, the network side can indicate to the terminal side the size of the compression information of the high-precision channel information of each port. One indication method includes: indicating the total size of the compression information of all ports through a first signaling, and indicating the proportion of the size of the compression information of each port in the total size of the compression information through a second signaling. Among them, for one solution of the second signaling: the network side sends an index value to the terminal side, and the terminal side can determine the proportion of the size of the compression information of each port in the total size of the compression information by querying a predefined configuration table. For example, for a terminal device configured with 4 ports (numbered 0 to 3), when the network side sends the index value 7, the terminal side can determine after querying Table 4 that the size of the compression information of port 0 is 1 / 2 of the total size of the compression information, the size of the compression information of port 1 is 1 / 4 of the total size of the compression information, the size of the compression information of port 2 is 1 / 8 of the total size of the compression information, and the size of the compression information of port 3 is 1 / 8 of the total size of the compression information. This index-based configuration method minimizes the number of signaling while ensuring configuration flexibility.

[0282] Combined with the above description, in some embodiments, the first node receives the first signaling and the second signaling sent by the second node, where the first signaling is used to indicate the size of the second feedback information, and the second signaling is used to indicate the proportion of the feedback information corresponding to the channel information of each port in the port set in the second feedback information.

[0283] In some embodiments, the second signaling includes a fourth index value, and the fourth index value is used to indicate the proportion of the feedback information corresponding to the channel information of each port in the port set in the second feedback information.

[0284] As an example, the association relationship between the fourth index value and the proportion of the feedback information corresponding to the channel information of each port in the port set in the second feedback information can be as shown in Table 4 below:

[0285] Table 4

[0286]

[0287]

[0288] In the above implementation steps, the second signaling may be included in the downlink control information (DCI), that is, the second signaling is carried in the downlink control information, so as to dynamically indicate the proportion of the size of the compression information of each port in the total size of the compression information. Among them, the advantage is that the network side can flexibly adjust based on actual factors such as real-time reconstruction performance and uplink feedback overhead, so as to optimize the system efficiency.

[0289] In the embodiments of the present disclosure, for aperiodic SRS transmission and CSI-RS reception, the network side can flexibly configure aperiodic SRS transmission resources and CSI-RS reception resources through dynamic signaling. Among them, the terminal side obtains high-precision channel information as the input of the encoder by receiving and measuring CSI-RS. Specifically, the following preferred method can be adopted: the network side sends an index value to the terminal side, and the terminal side looks up the table according to the index value to obtain the corresponding SRS transmission resources and CSI-RS reception resources. For example, when the index value sent by the network side is 1, the terminal side can determine to use the second SRS resource and CSI resource group by querying a pre-configured table (such as Table 3 above). Among them, the specific configurations of the first SRS resource to the fourth SRS resource and the CSI resource group can be notified to the terminal side by the network side in advance. These resource configuration information includes time domain parameters (such as occupied OFDM symbols), frequency domain parameters (such as occupied resource blocks), and code domain parameters (such as reference sequences), etc., to ensure the flexibility and accuracy of resource allocation. This index-based resource configuration method improves the system configuration efficiency.

[0290] Combined with the above description, in some embodiments, the first node receives the first indication information sent by the second node, and the first indication information is used to indicate the transmission resources of the sounding reference signal and the reception resources of the channel state information reference signal, and the channel state information reference signal is used for the first node to obtain the first channel information of the port set.

[0291] In some embodiments, the first indication information includes a third index value, and the third index value is used to indicate the transmission resources of the sounding reference signal and the reception resources of the channel state information reference signal.

[0292] In the embodiments of the present disclosure, to ensure the efficient cooperation between the encoder on the terminal side and the decoder on the network side, the relative power relationship between different port channel information as the input of the encoder should be consistent with the relative power relationship between different port channel information as the input of the decoder. To this end, the network side and the terminal side need to align the reference port, which is used for both parties to perform port-level power normalization. One way is to pre-define or explicitly indicate by the network side a port as the reference port. This solution can ensure the consistency of power normalization, thereby improving the matching accuracy of encoding and decoding.

[0293] Based on this, in some embodiments, the port set includes a reference port, which is used by the first node for power normalization, and the reference port is pre-defined or configured by the second node.

[0294] In some embodiments, to monitor the performance of the codec, one possible way is:

[0295] The network side uses the full-port channel information obtained by SRS measurement recently to achieve performance monitoring. The specific approach is as follows: 1) regard the measured full-port channel information as high-precision channel information; 2) obtain low-precision channel information by superimposing interference and noise on the high-precision channel information; 3) use the high-precision channel information as the input of the nominal encoder. The so-called nominal encoder refers to the encoder deployed on the network side, which can be aligned with the encoder deployed on the terminal side (i.e., the encoder actually used for inference or application); 4) use the compressed information of the high-precision channel information (i.e., the output of the nominal encoder) and the low-precision channel information as the input of the decoder; 5) determine the codec performance by comparing the reconstructed high-precision channel information (i.e., the output of the decoder) with the high-precision channel information, and achieve performance monitoring. This method effectively solves the problem of limited feedback resources on the terminal side through an innovative monitoring data generation method.

[0296] The low-precision and high-precision channel information in the above method are not actual low-precision and high-precision channel information, but artificially constructed low-precision and high-precision channel information, which may not be consistent with the measured data distribution. Another possible way is: the network side can instruct the terminal side to report the high-precision channel information of all ports. Then, the network side uses the high-precision channel information reported by the terminal side as the target of the decoder output. By comparing the above channel information with the reconstructed high-precision channel information (i.e., the output of the decoder), the network side can achieve real-time monitoring and evaluation of the reconstruction performance. This method can effectively ensure the accuracy of channel information reconstruction and provide data support for system optimization.

[0297] An optimized full-port high-precision channel information feedback scheme is as follows: 1) Joint reporting mechanism: The high-precision channel information and its corresponding compressed information are transmitted through the same message to improve the feedback efficiency. 2) Spatial / frequency domain sampling: The high-precision channel information reported by the terminal is sampled in the spatial domain (base station ports) and / or frequency domain (resource units) to reduce the feedback overhead. Assume that the dimension of the original high-precision channel information measured by the terminal is [number of terminal ports × number of base station ports × number of frequency domain resource units]. The terminal side can flexibly select the following sampling methods: 1) Base station port sampling: Only report the channel information of some base station ports (e.g., evenly select 16 from 32 ports). 2) Frequency domain resource unit sampling: Only report the channel information of some frequency domain resource units (e.g., evenly select 64 from 272 units). 3) Joint sampling: Reduce the number of base station ports and frequency domain resource units simultaneously (e.g., select 16 base station ports and 64 frequency domain units). For example, if the original channel information dimension is [4, 32, 272], the sampled dimensions that the terminal can report include: [4, 16, 272] (base station port downsampling) or [4, 32, 64] (frequency domain downsampling) or [4, 16, 64] (joint downsampling). The sampling strategy is recommended to use uniform (equidistant) sampling to maintain the integrity of the channel characteristics. The sampling interval can be predefined or configured by the network side to adapt to different channel environments. This scheme can significantly reduce the feedback overhead while still ensuring the monitoring accuracy of the channel information.

[0298] Combined with the above description, in some embodiments, the first channel information of the port set and the second feedback information are carried in the same message.

[0299] In some embodiments, the first channel information of the port set is the channel information that has been downsampled in the spatial domain and / or frequency domain.

[0300] In some embodiments, the sampling strategy of the first channel information of the port set includes uniform sampling, and the sampling interval of the first channel information is predefined or configured for the second node.

[0301] In some embodiments, in order to improve the accuracy of the channel information based on SRS measurement on the network side, as Figure 11 shown, the embodiments of the present disclosure also provide another information transmission method, which is applied to the second node. This method may include the following steps:

[0302] S801: Receive the second feedback information sent by the first node, and receive the sounding reference signal sent by the first node through the port set of the first node.

[0303] Wherein, the second feedback information is obtained by the first node after processing the first channel information of the port set.

[0304] S802. Measure the sounding reference signal to obtain the second channel information of the port set.

[0305] Among them, the accuracy of the first channel information is greater than the accuracy of the second channel information.

[0306] S803. Based on the second channel information of the port set and the second feedback information, obtain the first channel information of the port set.

[0307] In the embodiments of the present disclosure, the network side uses the low-precision channel information of all ports obtained by measurement (i.e., the second channel information of the port set) and the compressed information of the high-precision channel information of all ports (i.e., the second feedback information) fed back by the terminal side as the input of the decoder. Finally, the decoder on the network side outputs the high-precision channel information of all ports (i.e., the first channel information of the port set), thereby realizing the recovery of the high-precision channel information of all ports and improving the accuracy of the channel information based on SRS measurement on the network side.

[0308] In some embodiments, the second node sends a first signaling and a second signaling to the first node. The first signaling is used to indicate the size of the second feedback information, and the second signaling is used to indicate the proportion of the feedback information corresponding to the channel information of each port in the port set in the second feedback information.

[0309] In some embodiments, the second signaling includes a fourth index value, and the fourth index value is used to indicate the proportion of the feedback information corresponding to the channel information of each port in the port set in the second feedback information.

[0310] In some embodiments, the second signaling is carried in the downlink control information.

[0311] In some embodiments, the second node sends a first indication information to the first node. The first indication information is used to indicate the transmission resource of the sounding reference signal and the reception resource of the channel state information reference signal. The channel state information reference signal is used for the first node to obtain the first channel information of the port set.

[0312] In some embodiments, the first indication information includes a third index value, and the third index value is used to indicate the transmission resource of the sounding reference signal and the reception resource of the channel state information reference signal.

[0313] In some embodiments, the port set includes a reference port. The reference port is used for the first node and the second node to perform power normalization processing, and the reference port is predefined or configured by the second node.

[0314] In some embodiments, the second node sends a fourth indication information to the first node. The fourth indication information is used to indicate the first node to report the first channel information of the port set of the first node.

[0315] In some embodiments, the second node receives second feedback information sent by the first node.

[0316] In some embodiments, the first channel information and the second feedback information of the port set are carried in the same message.

[0317] In some embodiments, the first channel information of the port set is channel information that has undergone spatial domain downsampling and / or frequency domain downsampling.

[0318] In some embodiments, the sampling strategy of the first channel information of the port set includes uniform sampling, and the sampling interval of the first channel information is predefined or configured for the second node.

[0319] When the encoder and / or decoder is implemented using deep learning techniques, data collection is first required, and the model parameters of the encoder and / or decoder are trained based on the collected data. This process is a key step to ensure that the deep learning model can accurately learn the channel characteristics and achieve efficient encoding and decoding.

[0320] In some embodiments, to improve the reliability of the training data, as Figure 12 shown, an embodiment of the present disclosure also provides another information transmission method, which is applied to the first node. The method may include the following steps:

[0321] S901. Obtain the first channel information of the port set of the first node.

[0322] As an example, the first node measures the SRS to obtain the first channel information of the port set.

[0323] S902. Send the first channel information to the second node, and send a sounding reference signal through the port set.

[0324] From the above Figure 9 shown embodiments, it can be known that assuming that the network side is responsible for training the encoder and / or decoder, the network side needs to obtain the data for training.

[0325] One way is as follows: The terminal side sends SRS using all ports (for example, in a round-robin manner), and the network side measures and obtains channel information of all ports based on the received SRS; then the network side constructs a training dataset based on the channel information of all ports. Specifically, the network side regards the measured channel information of all ports as high-precision channel information, and obtains low-precision channel information by superimposing noise and interference on the high-precision channel information. Then, the high-precision channel information is used as the input of the encoder, and the low-precision channel information and the compressed information of the high-precision channel information (i.e., the output of the encoder) are used as the input of the decoder. The training objective is to make the decoder output as close as possible to the original high-precision channel information. This method effectively solves the problem of limited feedback resources on the terminal side through an innovative training data generation method.

[0326] However, the low-precision channel information in the above method is not actual low-precision channel information, but artificially constructed low-precision channel information, which may not be consistent with the measured data distribution. Another way is: 1) The terminal side sends SRS to the network side using all ports; 2) The terminal side measures and reports high-precision channel information of all ports to the network side. 3) The network side can configure spatial consistency in the following ways: Include SRS configuration information in the configuration message for channel information reporting, or include channel information reporting configuration information in the SRS configuration message to ensure spatial consistency of relevant ports when the terminal side sends SRS and receives CSI-RS. 4) The network side obtains low-precision channel information of all ports by measuring SRS, and constructs a training dataset in combination with the high-precision channel information reported by the terminal side. For example, to train an encoder and a decoder as shown in Figure 10 the high-precision channel information of all 4 ports reported by the terminal side can be used as the input of the encoder, and the low-precision channel information of all ports measured based on SRS and the output of the encoder can be used as the input of the decoder, and the output target (label) of the decoder is the input of the encoder, that is, the high-precision channel information of all ports reported by the terminal side. In this way, the network side constructs a training dataset using the high-precision channel information reported by the terminal side, which can improve the reliability of the training data and the generalization ability of the decoder model.

[0327] Combining the above description, in some embodiments, the first node receives a configuration message for channel information reporting sent by the second node, and the configuration message for channel information reporting includes sounding reference signal configuration information; or,

[0328] The first node receives a sounding reference signal configuration message sent by the second node, and the sounding reference signal configuration message includes configuration information for channel information reporting.

[0329] In some embodiments, in order to improve the reliability of the training data, such as Figure 13As shown in the figure, the embodiments of the present disclosure also provide another information transmission method, which is applied to the second node. The method may include the following steps:

[0330] S1001. Receive the first channel information of the port set of the first node sent by the first node, and receive the sounding reference signal sent by the first node based on the port set of the first node.

[0331] S1002. Measure the reference signal to obtain the second channel information of the port set.

[0332] Wherein, the accuracy of the first channel information is greater than the accuracy of the second channel information.

[0333] S1003. Determine the data set based on the first channel information and the second channel information of the port set.

[0334] S1004. Obtain the encoder and decoder based on the data set.

[0335] Wherein, the encoder is used for the first node to process the first channel information to obtain the second feedback information, and the decoder is used for the second node to obtain the first channel information based on the second channel information and the second feedback information.

[0336] In some embodiments, the second node sends a configuration message for the channel information report to the first node, and the configuration message for the channel information report includes the sounding reference signal configuration information; or,

[0337] The second node sends a sounding reference signal configuration message to the first node, and the sounding reference signal configuration message includes the configuration information of the channel information report.

[0338] The above embodiments are described by taking the second node as an example, which constructs a training data set based on the high-precision channel information (i.e., the first channel information) sent by the first node and the measured low-precision channel information (i.e., the second channel information), and then obtains the encoder and decoder based on the training data set. In some embodiments, the terminal side implements the encoder using traditional signal processing or compression algorithms (i.e., non-deep learning algorithms). To improve the reliability of the training data for training the decoder and the generalization ability of the decoder model, as Figure 14 As shown in the figure, the embodiments of the present disclosure also provide another information transmission method, which is applied to the first node. The method may include the following steps:

[0339] S1101. Obtain the first channel information of the port set of the first node.

[0340] S1102. Process the first channel information to obtain the second feedback information.

[0341] In some embodiments, perform compression processing on the first channel information to obtain the second feedback information.

[0342] As an example, the first node compresses the first channel information based on an encoder to obtain second feedback information. Herein, the encoder is implemented based on a traditional signal processing algorithm (such as a compression algorithm based on an NR Type II codebook).

[0343] S1103: Send the first channel information and the second feedback information to the second node, and send a sounding reference signal through a set of ports.

[0344] When the encoder adopts a traditional signal processing algorithm (such as a compression algorithm based on an NR Type II codebook), the following solutions can also be adopted: 1) The terminal side uses all ports to send SRS to the network side; 2) The terminal side measures and reports the high-precision channel information of all ports and the compressed information of the high-precision channel information of all ports (it is recommended to set the Rank value of the compressed information to the number of ports corresponding to the channel information to be compressed); 3) The reporting method supports including the high-precision channel information of all ports and the compressed information of the high-precision channel information of all ports in a single channel information report message; 4) The network side can configure spatial consistency in the following ways: include SRS configuration information in the configuration message of the channel information report, or include channel information report configuration information in the SRS configuration message to ensure spatial consistency of relevant ports when the terminal side sends SRS and receives CSI-RS. 5) The network side obtains the low-precision channel information of all ports by measuring SRS and combines the high-precision channel information of all ports reported by the terminal side and its compressed information to construct a training dataset for training a decoder. For example, in order to train a decoder as Figure 10 shown, the network side can use the low-precision channel information of all ports based on SRS measurement and the compressed information of the high-precision channel information of all ports reported by the terminal side as the input of the decoder, while the output target (label) of the decoder is the high-precision channel information of all ports reported by the terminal side. Compared with Figure 9 and Figure 11 the embodiments shown, this method constructs a training dataset using the compressed information of the high-precision channel information reported by the terminal side, which can avoid the influence of the traditional signal processing / compression algorithm actually implemented by the terminal side on the performance of the decoder, thereby improving the reliability of the training data and the generalization ability of the decoder model.

[0345] Combined with the above description, in some embodiments, the RANK value corresponding to the second feedback information is the number of ports corresponding to the channel information of the set of ports.

[0346] In some embodiments, the first channel information and the second feedback information are carried in the same message.

[0347] In some embodiments, the first node receives a configuration message of a channel information report sent by the second node, and the configuration message of the channel information report includes sounding reference signal configuration information; or,

[0348] The first node receives a sounding reference signal configuration message sent by the second node, and the sounding reference signal configuration message includes configuration information of a channel information report.

[0349] In some embodiments, to improve the reliability of training data and the generalization ability of the decoder model, as Figure 15 shown, an embodiment of the present disclosure further provides another information transmission method, which is applied to the second node, and the method may include the following steps:

[0350] S1201. Receive the first channel information of the port set of the first node and the second feedback information sent by the first node, and receive the sounding reference signal sent by the first node through the port set of the first node.

[0351] Wherein, the second feedback information is obtained after processing the first channel information of the port set of the first node.

[0352] S1202. Measure the sounding reference signal to obtain the second channel information of the port set of the first node.

[0353] Wherein, the accuracy of the first channel information is greater than the accuracy of the second channel information.

[0354] S1203. Determine a data set based on the first channel information, the second channel information, and the second feedback information.

[0355] S1204. Obtain a decoder based on the data set.

[0356] Wherein, the decoder is used for the second node to obtain the first channel information based on the second channel information and the second feedback information.

[0357] In some embodiments, the RANK value corresponding to the second feedback information is the number of ports corresponding to the channel information of the port set.

[0358] In some embodiments, the first channel information and the second feedback information are carried in the same message.

[0359] In some embodiments, the second node sends a configuration message of a channel information report to the first node, and the configuration message of the channel information report includes sounding reference signal configuration information; or,

[0360] The second node sends a sounding reference signal configuration message to the first node, and the sounding reference signal configuration message includes configuration information of a channel information report.

[0361] The above mainly introduces the solution provided by the present disclosure from the perspective of interactions between various nodes. It can be understood that in order to implement the above functions, each node, such as the first node or the second node, includes the corresponding hardware structure and / or software module for executing each function. Those skilled in the art should easily realize that in combination with the algorithm steps of each example described in the embodiments disclosed herein, the present disclosure can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Professional technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the present disclosure.

[0362] Embodiments of the present disclosure can divide functional modules for the first node or the second node according to the above method embodiments. For example, each functional module can be divided corresponding to each function, or two or more functions can be integrated into one functional module. The above integrated module can be implemented in the form of hardware or software. It should be noted that the division of modules in the embodiments of the present disclosure is illustrative, only a logical function division, and there can be other division methods in actual implementation. The following takes the example of dividing each functional module corresponding to each function for illustration.

[0363] Figure 16 It is a schematic diagram of the composition of a communication device provided by an embodiment of the present disclosure. As Figure 16 shown, the communication device 130 includes an acquisition unit 1301, a processing unit 1302, and a sending unit 1303.

[0364] The communication device 130 can be the above-mentioned first node or a chip in the first node. When the communication device 130 is used to implement the functions of the first node in the above embodiments, each unit is specifically used to implement the following functions.

[0365] The acquisition unit 1301 is used to acquire the channel information of the first port group;

[0366] The processing unit 1302 is used to process the channel information of the first port group to obtain the first feedback information;

[0367] The sending unit 1303 is used to send the first feedback information to the second node and send a sounding reference signal to the second node through the second port group; wherein, the first port group is the port set of the first node, and the second port group is a subset of the port set; or, the first port group is a subset of the port set of the first node, and the second port group is the complement of the first port group.

[0368] In some embodiments, the obtaining unit 1301 is further configured to receive a first index value sent by a second node, where the first index value is used to indicate ports in a first port group and ports in a second port group.

[0369] In some embodiments, the obtaining unit 1301 is further configured to obtain the RANK value corresponding to the first feedback information.

[0370] In some embodiments, the obtaining unit 1301 is specifically configured to receive a second index value sent by a second node, where the second index value is used to indicate the RANK value, ports in the first port group, and ports in the second port group.

[0371] In some embodiments, the obtaining unit 1301 is further configured to receive first indication information sent by a second node, where the first indication information is used to indicate the transmission resource of a sounding reference signal and the reception resource of a channel state information reference signal, and the channel state information reference signal is used for a first node to obtain the channel information of a first port group.

[0372] In some embodiments, the obtaining unit 1301 is further configured to receive second indication information sent by a second node, where the second indication information is used to indicate that the first node reports the channel information of a third port group, or is used to indicate that the first node sends a sounding reference signal through the third port group, and the third port group is the complement of the second port group.

[0373] Figure 17 It is a schematic diagram of the composition of another communication device provided by an embodiment of the present disclosure. As Figure 17 shown, the communication device 140 includes a receiving unit 1401 and a processing unit 1402.

[0374] The communication device 140 may be the above-mentioned second node or a chip in the second node. When the communication device 140 is used to implement the functions of the second node in the above embodiments, each unit is specifically configured to implement the following functions.

[0375] The receiving unit 1401 is configured to receive first feedback information sent by a first node and a sounding reference signal sent by the first node based on a second port group, where the first feedback information is obtained by the first node after processing the channel information of a first port group, the first port group is the port set of the first node, and the second port group is a subset of the port set; or the first port group is a subset of the port set of the first node, and the second port group is the complement of the first port group;

[0376] The processing unit 1402 is configured to measure the sounding reference signal to obtain the channel information of the second port group;

[0377] The processing unit 1402 is further configured to obtain the channel information of the third port group based on the channel information of the second port group and the first feedback information; the third port group is the complement of the second port group.

[0378] Figure 18 This is a schematic diagram of the composition of another communication device provided by an embodiment of the present disclosure. As Figure 18 shown, the communication device 150 includes an acquisition unit 1501 and a transmission unit 1502.

[0379] The communication device 150 may be the above-mentioned first node or a chip in the first node. When the communication device 150 is used to implement the functions of the first node in the above embodiment, each unit is specifically used to implement the following functions.

[0380] The acquisition unit 1501 is configured to acquire the channel information of the first port group;

[0381] The transmission unit 1502 is configured to send the channel information of the first port group to the second node, and send a sounding reference signal to the second node through the second port group; wherein, the first port group is the port set of the first node, and the second port group is a subset of the port set; or, the first port group is a subset of the port set of the first node, and the second port group is the complement of the first port group.

[0382] In some embodiments, the acquisition unit 1501 is further configured to receive the configuration information of the channel information report sent by the second node, and the configuration information of the channel information report includes the configuration information of the sounding reference signal; or, receive the configuration information of the sounding reference signal sent by the second node, and the configuration information of the sounding reference signal includes the configuration information of the channel information report.

[0383] In some embodiments, the acquisition unit 1501 is further configured to receive the third indication information sent by the second node, and the third indication information is used to indicate the information of the second port group.

[0384] Figure 19 This is a schematic diagram of the composition of another communication device provided by an embodiment of the present disclosure. As Figure 19 shown, the communication device 160 includes a receiving unit 1601 and a processing unit 1602.

[0385] The communication device 160 may be the above-mentioned second node or a chip in the second node. When the communication device 160 is used to implement the functions of the second node in the above embodiment, each unit is specifically used to implement the following functions.

[0386] A receiving unit 1601, configured to receive channel information of a first port group sent by a first node and a sounding reference signal sent by the first node based on a second port group; wherein, the first port group is a set of ports of the first node, and the second port group is a subset of the set of ports; alternatively, the first port group is a subset of the set of ports of the first node, and the second port group is a complement of the first port group;

[0387] A processing unit 1602, configured to measure the sounding reference signal to obtain channel information of the second port group;

[0388] The processing unit 1602 is further configured to determine a data set based on the channel information of the first port group and the channel information of the second port group;

[0389] The processing unit 1602 is further configured to obtain an encoder and a decoder based on the data set; wherein, the encoder is used for the first node to process the channel information of the first port group to obtain first feedback information, and the decoder is used for the second node to obtain channel information of a third port group based on the channel information of the second port group and the first feedback information, and the third port group is a complement of the second port group.

[0390] Figure 20 This is a schematic diagram of the composition of another communication device provided by an embodiment of the present disclosure. As Figure 20 shown, the communication device 170 includes an obtaining unit 1701, a processing unit 1702, and a sending unit 1703.

[0391] The communication device 170 may be the above-mentioned first node or a chip in the first node. When the communication device 170 is used to implement the functions of the first node in the above embodiment, each unit is specifically used to implement the following functions.

[0392] An obtaining unit 1701, configured to obtain channel information of a first port group and channel information of a third port group;

[0393] A processing unit 1702, configured to process the channel information of the first port group to obtain first feedback information;

[0394] A sending unit 1703, configured to send the first feedback information and the channel information of the third port group to the second node, and send a sounding reference signal to the second node through the second port group;

[0395] Wherein, the first port group is a set of ports of the first node, the second port group is a subset of the set of ports; alternatively, the first port group is a subset of the set of ports of the first node, and the second port group is a complement of the first port group; the third port group is a complement of the second port group.

[0396] In some embodiments, the obtaining unit 1701 is further configured to receive configuration information of a channel information report sent by a second node, where the configuration information of the channel information report includes sounding reference signal configuration information; or, receive sounding reference signal configuration information sent by the second node, where the sounding reference signal configuration information includes the configuration information of the channel information report.

[0397] In some embodiments, the obtaining unit 1701 is further configured to receive third indication information sent by the second node, where the third indication information is used to indicate information of a second port group.

[0398] Figure 21 FIG. is a schematic diagram of the composition of another communication device provided by an embodiment of the present disclosure. As Figure 21 shown, the communication device 180 includes a receiving unit 1801 and a processing unit 1802.

[0399] The communication device 180 may be the above-mentioned second node or a chip in the second node. When the communication device 180 is used to implement the functions of the second node in the above embodiments, each unit is specifically used to implement the following functions.

[0400] The receiving unit 1801 is configured to receive first feedback information and channel information of a third port group sent by a first node, and receive sounding reference signals sent by the first node through a second port group, where the first feedback information is obtained by processing channel information of a first port group, the first port group is a set of ports of the first node, and the second port group is a subset of the set of ports; or, the first port group is a subset of the set of ports of the first node, the second port group is a complement of the first port group; the third port group is a complement of the second port group;

[0401] The processing unit 1802 is configured to measure a reference signal to obtain channel information of the second port group;

[0402] The processing unit 1802 is further configured to determine a data set based on the channel information of the third port group, the channel information of the second port group, and the first feedback information;

[0403] The processing unit 1802 is further configured to obtain a decoder based on the data set; the decoder is used for the second node to obtain the channel information of the third port group based on the channel information of the second port group and the first feedback information.

[0404] Figure 22 FIG. is a schematic diagram of the composition of another communication device provided by an embodiment of the present disclosure. As Figure 22 shown, the communication device 190 includes an obtaining unit 1901, a processing unit 1902, and a sending unit 1903.

[0405] The communication device 190 may be the above-mentioned first node or a chip in the first node. When the communication device 190 is used to implement the functions of the first node in the above embodiments, each unit is specifically used to implement the following functions.

[0406] An obtaining unit 1901, configured to obtain first channel information of a port set of the first node;

[0407] A processing unit 1902, configured to process the first channel information of the port set to obtain second feedback information;

[0408] A sending unit 1903, configured to send the second feedback information to the second node, and send a sounding reference signal through the port set.

[0409] In some embodiments, the obtaining unit 1901 is further configured to receive a first signaling and a second signaling sent by the second node, where the first signaling is used to indicate the size of the second feedback information, and the second signaling is used to indicate the proportion of the feedback information corresponding to the channel information of each port in the port set in the second feedback information.

[0410] In some embodiments, the obtaining unit 1901 is further configured to receive a first indication information sent by the second node, where the first indication information is used to indicate the sending resource of the sounding reference signal and the receiving resource of the channel state information reference signal, and the channel state information reference signal is used for the first node to obtain the first channel information of the port set.

[0411] In some embodiments, the obtaining unit 1901 is further configured to receive a fourth indication information sent by the second node, where the fourth indication information is used to indicate that the first node reports the first channel information of the port set of the first node.

[0412] Figure 23 This is a schematic diagram of the composition of another communication device provided by an embodiment of the present disclosure. As Figure 23 shown, the communication device 200 includes a receiving unit 2001 and a processing unit 2002.

[0413] The communication device 200 may be the above-mentioned second node or a chip in the second node. When the communication device 200 is used to implement the functions of the second node in the above embodiments, each unit is specifically used to implement the following functions.

[0414] The receiving unit 2001 is configured to receive the second feedback information sent by the first node, and receive the sounding reference signal sent by the first node through the port set of the first node, where the second feedback information is obtained by the first node processing the first channel information of the port set;

[0415] The processing unit 2002 is configured to measure the sounding reference signal to obtain second channel information of the port set;

[0416] The processing unit 2002 is further configured to obtain the first channel information of the port set based on the second channel information and the second feedback information of the port set.

[0417] Figure 24 This is a schematic diagram of the composition of another communication device provided by an embodiment of the present disclosure. As Figure 24 shown, the communication device 210 includes an acquisition unit 2101 and a transmission unit 2102.

[0418] The communication device 210 may be the above-mentioned first node or a chip in the first node. When the communication device 210 is used to implement the functions of the first node in the above embodiment, each unit is specifically used to implement the following functions.

[0419] The acquisition unit 2101 is configured to acquire the first channel information of the port set of the first node;

[0420] The transmission unit 2102 is configured to send the first channel information to the second node and send a sounding reference signal through the port set.

[0421] In some embodiments, the acquisition unit 2101 is further configured to receive a configuration message of a channel information report sent by the second node, where the configuration message of the channel information report includes sounding reference signal configuration information; or, receive a sounding reference signal configuration message sent by the second node, where the sounding reference signal configuration message includes the configuration information of the channel information report.

[0422] Figure 25 This is a schematic diagram of the composition of another communication device provided by an embodiment of the present disclosure. As Figure 25 shown, the communication device 220 includes a receiving unit 2201 and a processing unit 2202.

[0423] The communication device 220 may be the above-mentioned second node or a chip in the second node. When the communication device 220 is used to implement the functions of the second node in the above embodiment, each unit is specifically used to implement the following functions.

[0424] The receiving unit 2201 is configured to receive the first channel information of the port set of the first node sent by the first node, and receive the sounding reference signal sent by the first node based on the port set of the first node;

[0425] The processing unit 2202 is configured to measure the reference signal to obtain the second channel information of the port set;

[0426] The processing unit 2202 is further configured to determine a data set based on the first channel information and the second channel information of the port set;

[0427] The processing unit 2202 is further configured to obtain an encoder and a decoder based on a data set. The encoder is used for the first node to process the first channel information to obtain second feedback information, and the decoder is used for the second node to obtain the first channel information based on the second channel information and the second feedback information.

[0428] Figure 26 FIG. is a schematic diagram of the composition of another communication device provided by an embodiment of the present disclosure. As Figure 26 shown, the communication device 230 includes an acquisition unit 2301, a processing unit 2302, and a transmission unit 2303.

[0429] The communication device 230 may be the above-mentioned first node or a chip in the first node. When the communication device 230 is used to implement the functions of the first node in the above embodiments, each unit is specifically used to implement the following functions.

[0430] The acquisition unit 2301 is configured to acquire first channel information of a port set of the first node;

[0431] The processing unit 2302 is configured to process the first channel information to obtain second feedback information;

[0432] The transmission unit 2303 is configured to send the first channel information and the second feedback information to the second node, and send a sounding reference signal through the port set.

[0433] In some embodiments, the acquisition unit 2301 is further configured to receive a configuration message of a channel information report sent by the second node, where the configuration message of the channel information report includes sounding reference signal configuration information; or,

[0434] receive a sounding reference signal configuration message sent by the second node, where the sounding reference signal configuration message includes configuration information of the channel information report.

[0435] Figure 27 FIG. is a schematic diagram of the composition of another communication device provided by an embodiment of the present disclosure. As Figure 27 shown, the communication device 240 includes a receiving unit 2401 and a processing unit 2402.

[0436] The communication device 240 may be the above-mentioned second node or a chip in the second node. When the communication device 240 is used to implement the functions of the second node in the above embodiments, each unit is specifically used to implement the following functions.

[0437] The receiving unit 2401 is configured to receive the first channel information and the second feedback information of the port set of the first node sent by the first node, and receive the sounding reference signal sent by the first node through the port set of the first node, where the second feedback information is obtained by processing the first channel information of the port set of the first node;

[0438] A processing unit 2402, configured to measure a sounding reference signal to obtain second channel information of a port set of a first node;

[0439] The processing unit 2402 is further configured to determine a data set based on the first channel information, the second channel information, and the second feedback information;

[0440] The processing unit 2402 is further configured to obtain a decoder based on the data set; the decoder is used for a second node to obtain the first channel information based on the second channel information and the second feedback information.

[0441] It should be noted that Figures 16 to 27 the units in can also be referred to as modules. For example, the sending unit can be referred to as a sending module. Additionally, in the Figures 16 to 27 embodiment shown, the names of the respective units may not be the names shown in the figure. For example, the sending unit can also be referred to as a communication unit, and the receiving unit can also be referred to as a communication unit.

[0442] Figures 16 to 27 If the respective units in are implemented in the form of software function modules and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on such an understanding, the technical solution of the embodiments of the present disclosure, in essence, or the part that contributes to the prior art, or all or part of this technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) or a processor to execute all or part of the steps of the methods of the various embodiments of the present disclosure. The storage media storing the computer software product include: USB flash drives, mobile hard disks, read-only memories (ROMs), random access memories (RAMs), magnetic disks, or optical discs, and other various media that can store program codes.

[0443] In the case where any one of the communication devices 130 to 240 implements the functions of the above-mentioned integrated modules in hardware form, the embodiments of the present disclosure provide a structural schematic diagram of a communication device. As Figure 28 shown, the communication device 250 includes: a processor 2502, a communication interface 2503, and a bus 2504. Optionally, the communication device 250 may further include a memory 2501.

[0444] The processor 2502 can be a central processing unit, a general-purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, transistor logic device, hardware component, or any combination thereof that implements or executes various exemplary logical blocks, modules, and circuits described in connection with the disclosure of the embodiments of the present disclosure. The processor 2502 can also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a DSP and a microprocessor, and the like.

[0445] The communication interface 2503 is used to connect to other devices through a communication network. The communication network can be an Ethernet, a wireless access network, a wireless local area network (WLAN), etc.

[0446] The memory 2501 can be a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (RAM) or other type of dynamic storage device that can store information and instructions, or an electrically erasable programmable read-only memory (EEPROM), a magnetic disk storage medium, or other magnetic storage device, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited thereto.

[0447] As a possible implementation, the memory 2501 can exist independently of the processor 2502. The memory 2501 can be connected to the processor 2502 through a bus 2504 for storing instructions or program code. When the processor 2502 calls and executes the instructions or program code stored in the memory 2501, the information transmission method provided by the embodiments of the present disclosure can be implemented.

[0448] In another possible implementation, the memory 2501 can also be integrated with the processor 2502.

[0449] The bus 2504 can be an extended industry standard architecture (EISA) bus, etc. The bus 2504 can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 28It is represented only by a thick line, but it does not mean that there is only one bus or one type of bus.

[0450] Through the description of the above embodiments, those skilled in the art can clearly understand that for the convenience and conciseness of description, only the division of the above functional modules is used as an example. In practical applications, the above functions can be allocated to different functional modules as needed, that is, the internal structure of the first node or the second node is divided into different functional modules to complete all or part of the functions described above.

[0451] The embodiments of the present disclosure also provide a computer-readable storage medium. All or part of the processes in the above method embodiments can be completed by computer instructions instructing relevant hardware. The program can be stored in the above computer-readable storage medium. When the program is executed, it can include the processes of the above method embodiments. The above computer-readable storage medium can also be an external storage device of the above first node or second node, such as a plug-in hard disk, a smart media card (SMC), a secure digital (SD) card, a flash card, etc. equipped on the above first node or second node. Further, the above computer-readable storage medium can also include both the internal storage unit of the above first node or second node and the external storage device. The above computer-readable storage medium is used to store the above computer program and other programs and data required by the above first node or second node. The above computer-readable storage medium can also be used to temporarily store the data that has been output or will be output.

[0452] The embodiments of the present disclosure also provide a computer program product. The computer product includes a computer program. When the computer program product runs on a computer, the computer is caused to execute any one of the information transmission methods provided in the above embodiments.

[0453] Although the present disclosure is described in conjunction with various embodiments herein, however, in the process of implementing the claimed present disclosure, those skilled in the art can understand and realize other changes of the disclosed embodiments by viewing the drawings, the disclosure content, and the appended claims. In the claims, the word "comprising" does not exclude other components or steps, and "a" or "an" does not exclude a plurality of cases. A single processor or other unit can implement several functions recited in the claims. Certain measures are recited in mutually different dependent claims, but this does not mean that these measures cannot be combined to produce good results.

[0454] Although the present disclosure has been described in connection with specific features and their embodiments, it will be apparent that various modifications and combinations can be made without departing from the spirit and scope of the present disclosure. Accordingly, the present specification and the drawings are merely exemplary illustrations of the present disclosure defined by the appended claims, and are considered to cover any and all modifications, variations, combinations, or equivalents within the scope of the present disclosure. Obviously, those skilled in the art can make various changes and modifications to the present disclosure without departing from the spirit and scope of the present disclosure. Thus, if these modifications and variations of the present disclosure fall within the scope of the claims of the present disclosure and their equivalent technologies, the present disclosure is also intended to include these changes and modifications.

[0455] The above is only the specific implementation manner of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any change or replacement within the technical scope disclosed by the present disclosure should be covered by the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be subject to the protection scope of the claims.

Claims

1. An information transmission method, characterized in that, Applied to a first node, the method includes: Obtaining channel information of a first port group; Processing the channel information of the first port group to obtain first feedback information; Sending the first feedback information to a second node, and sending a sounding reference signal to the second node through a second port group; wherein, the first port group is a set of ports of the first node, and the second port group is a subset of the set of ports; or, the first port group is a subset of the set of ports of the first node, and the second port group is a complement of the first port group.

2. The method according to claim 1, wherein The first port group and the second port group are predefined or indicated by the second node.

3. The method according to claim 2, wherein When the first port group and the second port group are indicated by the second node, the method further includes: Receiving a first index value sent by the second node, where the first index value is used to indicate ports in the first port group and ports in the second port group.

4. The method according to claim 3, wherein The first index value is carried in downlink control information.

5. The method according to claim 3, wherein Ports in the second port group indicated by the first index value are ports supporting uplink transmission.

6. The method according to claim 1, wherein The method further includes: Obtaining a rank (RANK) value corresponding to the first feedback information.

7. The method according to claim 6, wherein The RANK value is predefined or indicated by the second node.

8. The method according to claim 7, characterized in that, When the RANK value is indicated by the second node, obtaining the RANK value corresponding to the first feedback information includes: Receiving a second index value sent by the second node, where the second index value is used to indicate the RANK value, ports in the first port group, and ports in the second port group.

9. The method according to claim 8, characterized in that, The second port group includes a reference port, and the reference port is used for the first node to perform power normalization processing on the obtained channel information. The reference port is predefined or indicated by the second node.

10. The method according to claim 9, characterized in that, When the reference port is indicated by the second node, the second index value is further used to indicate the reference port.

11. The method according to claim 1, wherein The method further includes: Receiving a first indication information sent by the second node, where the first indication information is used to indicate a transmission resource of the sounding reference signal and a reception resource of a channel state information reference signal, and the channel state information reference signal is used for the first node to obtain channel information of the first port group.

12. The method according to claim 11, wherein The first indication information includes a third index value, and the third index value is used to indicate the transmission resource of the sounding reference signal and the reception resource of the channel state information reference signal.

13. The method according to claim 1, wherein The method further includes: Receiving a second indication information sent by the second node, where the second indication information is used to indicate that the first node reports channel information of a third port group, or is used to indicate that the first node sends a sounding reference signal through the third port group, and the third port group is a complement of the second port group.

14. The method according to claim 13, wherein The channel information of the third port group and the first feedback information are carried in the same message.

15. The method according to claim 13, wherein The channel information of the third port group is channel information that has undergone spatial domain downsampling and / or frequency domain downsampling.

16. The method according to claim 15, wherein The sampling strategy for the channel information of the third port group includes uniform sampling, and the sampling interval of the channel information of the third port group is predefined or configured for the second node.

17. An information transmission method, characterized in that, Applied to the second node, the method includes: Receiving first feedback information sent by the first node and a sounding reference signal sent by the first node based on a second port group, where the first feedback information is obtained by the first node after processing the channel information of a first port group, the first port group is a set of ports of the first node, and the second port group is a subset of the set of ports; or, the first port group is a subset of the set of ports of the first node, and the second port group is the complement of the first port group; Measuring the sounding reference signal to obtain the channel information of the second port group; Obtaining the channel information of a third port group based on the channel information of the second port group and the first feedback information; the third port group is the complement of the second port group.

18. An information transmission method, characterized in that, Applied to the first node, the method includes: Obtaining the channel information of a first port group; Sending the channel information of the first port group to the second node and sending a sounding reference signal to the second node through a second port group; where the first port group is a set of ports of the first node, and the second port group is a subset of the set of ports; or, the first port group is a subset of the set of ports of the first node, and the second port group is the complement of the first port group.

19. The method according to claim 18, wherein The method further includes: Receiving configuration information of a channel information report sent by the second node, where the configuration information of the channel information report includes sounding reference signal configuration information; or, Receiving sounding reference signal configuration information sent by the second node, where the sounding reference signal configuration information includes configuration information of the channel information report.

20. The method according to claim 18, characterized in that, The method further includes: Receiving third indication information sent by the second node, where the third indication information is used to indicate information of the second port group.

21. An information transmission method, characterized in that, Applied to the second node, the method includes: Receiving the channel information of a first port group sent by the first node and a sounding reference signal sent by the first node based on a second port group; where the first port group is a set of ports of the first node, and the second port group is a subset of the set of ports; or, the first port group is a subset of the set of ports of the first node, and the second port group is the complement of the first port group; Measuring the sounding reference signal to obtain the channel information of the second port group; Determining a data set based on the channel information of the first port group and the channel information of the second port group; Obtaining an encoder and a decoder based on the data set; where the encoder is used for the first node to process the channel information of the first port group to obtain first feedback information, and the decoder is used for the second node to obtain the channel information of a third port group based on the channel information of the second port group and the first feedback information, and the third port group is the complement of the second port group.

22. An information transmission method, characterized in that, Applied to the first node, the method includes: Obtaining the channel information of a first port group and the channel information of a third port group; Process the channel information of the first port group to obtain first feedback information; Send the first feedback information and the channel information of the third port group to the second node, and send a sounding reference signal to the second node through the second port group; Wherein, the first port group is a set of ports of the first node, and the second port group is a subset of the set of ports; or, the first port group is a subset of the set of ports of the first node, and the second port group is a complement of the first port group; the third port group is a complement of the second port group.

23. The method according to claim 22, wherein The RANK value corresponding to the first feedback information is the number of ports corresponding to the channel information of the first port group.

24. The method according to claim 22, characterized in that, The first feedback information and the channel information of the third port group are carried in the same message.

25. The method according to claim 22, characterized in that, The method further includes: Receiving configuration information of a channel information report sent by the second node, where the configuration information of the channel information report includes sounding reference signal configuration information; or, Receiving sounding reference signal configuration information sent by the second node, where the sounding reference signal configuration information includes configuration information of a channel information report.

26. The method according to claim 22, wherein The method further includes: Receiving third indication information sent by the second node, where the third indication information is used to indicate information of the second port group.

27. An information transmission method, characterized in that, Applied to a second node, the method includes: Receiving first feedback information and channel information of a third port group sent by a first node, and receiving a sounding reference signal sent by the first node through a second port group, where the first feedback information is obtained by processing channel information of a first port group, the first port group is a set of ports of the first node, and the second port group is a subset of the set of ports; or, the first port group is a subset of the set of ports of the first node, and the second port group is a complement of the first port group; the third port group is a complement of the second port group; Measuring the reference signal to obtain channel information of the second port group; Determining a data set based on the channel information of the third port group, the channel information of the second port group, and the first feedback information; Obtaining a decoder based on the data set; the decoder is used for the second node to obtain the channel information of the third port group based on the channel information of the second port group and the first feedback information.

28. An information transmission method, characterized in that Applied to a first node, the method includes: Obtaining first channel information of a set of ports of the first node; Processing the first channel information of the set of ports to obtain second feedback information; Sending the second feedback information to the second node, and sending a sounding reference signal through the set of ports.

29. The method according to claim 28, wherein The method further includes: Receiving a first signaling and a second signaling sent by the second node, where the first signaling is used to indicate the size of the second feedback information, and the second signaling is used to indicate the proportion of the feedback information corresponding to the channel information of each port in the set of ports in the second feedback information.

30. The method according to claim 29, wherein The second signaling includes a fourth index value, and the fourth index value is used to indicate the proportion of the feedback information corresponding to the channel information of each port in the set of ports in the second feedback information.

31. The method according to claim 29, wherein The second signaling is carried in the downlink control information.

32. The method according to claim 28, wherein The method further includes: Receiving first indication information sent by the second node, where the first indication information is used to indicate a transmission resource of a sounding reference signal and a reception resource of a channel state information reference signal, and the channel state information reference signal is used for the first node to obtain first channel information of the port set.

33. The method according to claim 32, characterized in that, The first indication information includes a third index value, and the third index value is used to indicate the transmission resource of the sounding reference signal and the reception resource of the channel state information reference signal.

34. The method according to claim 28, wherein The port set includes a reference port, and the reference port is used for the first node to perform power normalization processing, and the reference port is predefined or configured for the second node.

35. The method according to claim 28, wherein The method further includes: Receiving fourth indication information sent by the second node, where the fourth indication information is used to indicate the first node to report first channel information of the port set of the first node.

36. The method according to claim 35, wherein The first channel information of the port set and the second feedback information are carried in the same message.

37. The method according to claim 35, characterized in that, The first channel information of the port set is channel information that has been downsampled in the spatial domain and / or in the frequency domain.

38. The method according to claim 37, wherein The sampling strategy of the first channel information of the port set includes uniform sampling, and the sampling interval of the first channel information is predefined or configured for the second node.

39. An information transmission method, characterized in that, Applied to the second node, the method includes: Receiving second feedback information sent by the first node, and receiving the sounding reference signal sent by the first node through the port set of the first node, where the second feedback information is obtained by the first node after processing the first channel information of the port set; Measuring the sounding reference signal to obtain second channel information of the port set; Based on the second channel information and the second feedback information of the port set, obtaining the first channel information of the port set.

40. The method according to claim 39, wherein The accuracy of the first channel information is greater than the accuracy of the second channel information.

41. An information transmission method, characterized in that, Applied to the first node, the method includes: Obtaining first channel information of the port set of the first node; Sending the first channel information to the second node, and sending a sounding reference signal through the port set.

42. The method according to claim 41, characterized in that, The method further includes: Receiving a configuration message for a channel information report sent by the second node, where the configuration message for the channel information report includes sounding reference signal configuration information; or, Receiving a sounding reference signal configuration message sent by the second node, where the sounding reference signal configuration message includes configuration information for a channel information report.

43. An information transmission method, characterized in that, Applied to the second node, the method includes: Receiving the first channel information of the port set of the first node sent by the first node, and receiving the sounding reference signal sent by the first node based on the port set of the first node; Measuring the reference signal to obtain second channel information of the port set; Determining a data set based on the first channel information and the second channel information of the port set; Obtain an encoder and a decoder based on the said data set; the encoder is used for the first node to process the first channel information to obtain second feedback information, and the decoder is used for the second node to obtain the first channel information based on the second channel information and the second feedback information.

44. An information transmission method, characterized in that Applied to the first node, the method includes: Obtain the first channel information of the port set of the first node; Process the first channel information to obtain second feedback information; Send the first channel information and the second feedback information to the second node, and send a sounding reference signal through the port set.

45. The method according to claim 44, characterized in that, The first channel information and the second feedback information are carried in the same message.

46. The method according to claim 44, wherein The method further includes: Receive a configuration message of a channel information report sent by the second node, where the configuration message of the channel information report includes sounding reference signal configuration information; or, Receive a sounding reference signal configuration message sent by the second node, where the sounding reference signal configuration message includes configuration information of a channel information report.

47. An information transmission method, characterized in that Applied to the second node, the method includes: Receive the first channel information and the second feedback information of the port set of the first node sent by the first node, and receive the sounding reference signal sent by the first node through the port set of the first node, where the second feedback information is obtained after processing the first channel information of the port set of the first node; Measure the sounding reference signal to obtain second channel information of the port set of the first node; Determine a data set based on the first channel information, the second channel information, and the second feedback information; Obtain a decoder based on the data set; the decoder is used for the second node to obtain the first channel information based on the second channel information and the second feedback information.

48. A communication device, characterized in that, Includes: A memory and a processor; The memory and the processor are coupled; The memory is used to store instructions executable by the processor; When the processor executes the instructions, it executes the method according to any one of claims 1 to 47.

49. A computer-readable storage medium, characterized in that, Computer instructions are stored on the computer-readable storage medium, and when the computer instructions run on a computer, the computer is caused to execute the method according to any one of claims 1 to 47.

50. A computer program product, characterized in that, The computer program product contains computer instructions, and when the computer instructions run on a computer, the computer is caused to execute the method according to any one of claims 1 to 47.

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