Information transmission method and related device

Abstract

The application provides an information sending method and related equipment, and relates to the technical field of communication, and the method comprises the following steps: inputting preset demand parameters into a pre-constructed optimization model, wherein the preset demand parameters comprise channel coefficients between N terminals in a cell and a base station, noise indexes, and constraint condition parameters, N is an integer greater than or equal to 1; obtaining the optimization model, taking maximizing a system performance index as a target, outputting sending power of common information of the N terminals, and outputting sending power corresponding to private information of the N terminals, wherein the system performance index is determined based on common information rates and private information rates of the N terminals; and sending the common information to the N terminals respectively according to the sending power of the common information on the same time-frequency resource, and sending the private information of the N terminals to the N terminals respectively according to the sending power corresponding to the private information of the N terminals. The application can improve the communication quality of users.

Description

Technical Field

[0001] This invention relates to the field of communication technology, and in particular to an information transmission method and related equipment. Background Technology

[0002] Rate Splitting Multiple Access (RSMA) uses interference segmentation to divide each user's data into common messages (CM) and private messages (PM) according to a rate segmentation strategy. However, current RSMA does not allocate the transmission power of common and private messages reasonably, resulting in poor communication quality for users. Summary of the Invention

[0003] This invention provides an information transmission method and related equipment to solve the problem in the prior art where RSMA does not reasonably allocate the transmission power of public and private information, resulting in poor communication quality for users.

[0004] To solve the above-mentioned technical problems, the present invention is implemented as follows;

[0005] In a first aspect, embodiments of the present invention provide an information transmission method applied to a network-side device, the method comprising:

[0006] Input the preset requirement parameters into the pre-built optimization model. The preset requirement parameters include the channel coefficient, noise index, and constraint parameters between N terminals and the base station in the cell, where N is an integer greater than or equal to 1.

[0007] The optimization model aims to maximize system performance indicators by outputting the transmission power of the common information of the N terminals and the transmission power of the private information of the N terminals. The system performance indicators are determined based on the common information rate and private information rate of the N terminals.

[0008] On the same time-frequency resources, the public information is sent to the N terminals according to the transmission power of the public information, and the private information of the N terminals is sent to the N terminals according to the transmission power corresponding to the private information of the N terminals.

[0009] Optionally, the private information of the N terminals is the service data of the N terminals;

[0010] The public information includes any of the following:

[0011] Broadcast service data;

[0012] Multicast service data;

[0013] System broadcast message;

[0014] Paging message.

[0015] Optionally, after sending the public information to the N terminals according to the transmission power of the public information, and sending the private information of the N terminals to the N terminals according to the transmission power corresponding to the private information of the N terminals, the method further includes:

[0016] The system sends a first downlink control information (DCI) and a first demodulation reference signal to each of the N terminals, and sends a corresponding second DCI and a second demodulation reference signal to each of the N terminals.

[0017] The first DCI is used to schedule the public information, and the first demodulation reference signal is used to demodulate the public information. The second DCI corresponding to the first terminal is used to schedule the private information of the first terminal, and the second demodulation reference signal corresponding to the first terminal is used to demodulate the private information of the first terminal. The first terminal is any one of the N terminals.

[0018] Optional,

[0019] The first DCI carries a first indication message, and / or the second DCI corresponding to the first terminal carries a second indication message corresponding to the first terminal. The first indication message is used to indicate whether the private information exists on the time-frequency resources of the public information, and the second indication message is used to indicate whether the public information exists on the time-frequency resources of the private information.

[0020] Optionally, when the first DCI and the second DCI corresponding to the first terminal are sent on the same PDCCH, the first DCI carries the first indication message, and / or the second DCI corresponding to the first terminal carries the second indication message corresponding to the first terminal.

[0021] When the first DCI and the second DCI corresponding to the first terminal are sent on different PDCCHs, the first DCI carries the first indication message, and the second DCI corresponding to the first terminal carries the second indication message corresponding to the first terminal.

[0022] Optionally, the first DCI also carries a third indication message, which is used to determine the transmission power of the public information;

[0023] The second PDCI corresponding to the first terminal also carries a fourth indication message and a fifth indication message corresponding to the first terminal. The fourth indication message corresponding to the first terminal is used to indicate the transmission power of the private information of the first terminal, and the fifth indication message corresponding to the first terminal is used to indicate whether there is private information of other terminals on the time-frequency resources of the private information of the first terminal.

[0024] Optionally, the first reference signal and the second demodulation reference signals corresponding to the N terminals differ from each other in at least one of the following ways:

[0025] The sequence of reference signals;

[0026] The resources of the reference signal mapping include at least one of the time-domain resources, frequency-domain resources, and code-domain resources of the mapping;

[0027] The transmission power of the reference signal.

[0028] Secondly, embodiments of the present invention also provide an information sending method applied to a terminal, wherein the terminal is a first terminal, and the method includes:

[0029] On the same time-frequency resources, the receiving network-side device transmits the public information according to the transmission power of the public information of N terminals, and receives the private information of N terminals transmitted by the network-side device according to the transmission power corresponding to the private information of the first terminal, where the first terminal is any one of the N terminals and N is an integer greater than or equal to 1;

[0030] The transmission power of the public information and the private information are the transmission power output by a pre-built optimization model with the goal of maximizing the system performance index. The system performance index is determined based on the public information rate and the private information rate of the N terminals.

[0031] Optionally, the private information of the N terminals is the service data of the N terminals;

[0032] The public information includes any of the following:

[0033] Broadcast service data;

[0034] Multicast service data;

[0035] System broadcast message;

[0036] Paging message.

[0037] Optionally, after receiving the public information transmitted by the network-side device according to the transmission power of the public information of N terminals, and receiving the private information of N terminals transmitted by the network-side device according to the transmission power corresponding to the private information of the first terminal, the method further includes:

[0038] Receives a first downlink control information (DCI) and a first demodulation reference signal, and receives a second DCI and a second demodulation reference signal corresponding to the first terminal;

[0039] The public information is scheduled according to the first DCI, and the public information is demodulated according to the first demodulation reference signal;

[0040] The private information of the first terminal is scheduled according to the second DCI corresponding to the first terminal, and the private information of the first terminal is demodulated according to the second demodulation reference signal corresponding to the first terminal.

[0041] Optionally, before scheduling the private information of the first terminal according to the second DCI corresponding to the first terminal, the method further includes:

[0042] The first DCI carries a first indication message, and / or the second DCI corresponding to the first terminal carries a second indication message corresponding to the first terminal. When the first indication message and / or the second indication message indicate that the public information and the private information exist on the same time-frequency resource, the demodulated public information is removed according to the first DCI after demodulating the public information.

[0043] Wherein, the first indication message is used to indicate whether the private information exists on the time-frequency resources of the public information, and the second indication message is used to indicate whether the public information exists on the time-frequency resources of the private information.

[0044] Optionally, when the first DCI and the second DCI corresponding to the first terminal are sent on the same PDCCH, the first DCI carries the first indication message, and / or the second DCI corresponding to the first terminal carries the second indication message corresponding to the first terminal.

[0045] When the first DCI and the second DCI corresponding to the first terminal are sent on different PDCCHs, the first DCI carries the first indication message, and the second DCI corresponding to the first terminal carries the second indication message corresponding to the first terminal.

[0046] Optionally, the first DCI also carries a third indication message, which is used to indicate the transmission power of the public information;

[0047] The second DCI corresponding to the first terminal also carries a fourth indication message and a fifth indication message corresponding to the first terminal. The fourth indication message corresponding to the first terminal is used to indicate the transmission power of the private information of the first terminal, and the fifth indication message corresponding to the first terminal is used to indicate whether there is private information of other terminals on the time-frequency resources of the private information of the first terminal.

[0048] Thirdly, embodiments of the present invention also provide a network-side device, comprising:

[0049] The input module is used to input preset requirement parameters into a pre-built optimization model. The preset requirement parameters include the channel coefficient, noise index, and constraint parameters between N terminals and the base station in the cell, where N is an integer greater than or equal to 1.

[0050] The acquisition module is used to acquire the transmission power of the common information of the N terminals output by the optimization model with the goal of maximizing the system performance index, and the transmission power of the private information of the N terminals output by the optimization model. The system performance index is determined based on the common information rate and private information rate of the N terminals.

[0051] The first transmitting module is configured to transmit the public information to the N terminals respectively according to the transmission power of the public information on the same time-frequency resources, and to transmit the private information of the N terminals respectively according to the transmission power corresponding to the private information of the N terminals.

[0052] Optionally, the private information of the N terminals is the service data of the N terminals;

[0053] The public information includes any of the following:

[0054] Broadcast service data;

[0055] Multicast service data;

[0056] System broadcast message;

[0057] Paging message.

[0058] Optionally, the network-side device further includes:

[0059] The second transmitting module is used to transmit the first downlink control information (DCI) and the first demodulation reference signal to the N terminals respectively, and to transmit the corresponding second DCI and the second demodulation reference signal to the N terminals respectively;

[0060] The first DCI is used to schedule the public information, and the first demodulation reference signal is used to demodulate the public information. The second DCI corresponding to the first terminal is used to schedule the private information of the first terminal, and the second demodulation reference signal corresponding to the first terminal is used to demodulate the private information of the first terminal. The first terminal is any one of the N terminals.

[0061] Optional,

[0062] The first DCI carries a first indication message, and / or the second DCI corresponding to the first terminal carries a second indication message corresponding to the first terminal. The first indication message is used to indicate whether the private information exists on the time-frequency resources of the public information, and the second indication message is used to indicate whether the public information exists on the time-frequency resources of the private information.

[0063] Optionally, when the first DCI and the second DCI corresponding to the first terminal are sent on the same PDCCH, the first DCI carries the first indication message, and / or the second DCI corresponding to the first terminal carries the second indication message corresponding to the first terminal.

[0064] When the first DCI and the second DCI corresponding to the first terminal are sent on different PDCCHs, the first DCI carries the first indication message, and the second DCI corresponding to the first terminal carries the second indication message corresponding to the first terminal.

[0065] Optionally, the first DCI also carries a third indication message, which is used to determine the transmission power of the public information;

[0066] The second PDCCH corresponding to the first terminal also carries a fourth indication message and a fifth indication message corresponding to the first terminal. The fourth indication message corresponding to the first terminal is used to indicate the transmission power of the private information of the first terminal, and the fifth indication message corresponding to the first terminal is used to indicate whether there is private information of other terminals on the time-frequency resources of the private information of the first terminal.

[0067] Optionally, the first demodulation reference signal and the second demodulation reference signals corresponding to the N terminals differ from each other in at least one of the following ways:

[0068] The sequence of reference signals;

[0069] The resources of the reference signal mapping include at least one of the time-domain resources, frequency-domain resources, and code-domain resources of the mapping;

[0070] The transmission power of the reference signal.

[0071] Fourthly, embodiments of the present invention also provide a terminal, wherein the terminal is a first terminal, and the first terminal includes:

[0072] The first receiving module is configured to receive, on the same time-frequency resources, the common information transmitted by the network-side device according to the transmission power of the common information of N terminals, and to receive the private information of N terminals transmitted by the network-side device according to the transmission power corresponding to the private information of the first terminal, wherein the first terminal is any one of the N terminals, and N is an integer greater than or equal to 1;

[0073] The transmission power of the public information and the private information are the transmission power output by a pre-built optimization model with the goal of maximizing the system performance index. The system performance index is determined based on the public information rate and the private information rate of the N terminals.

[0074] Optionally, the private information of the N terminals is the service data of the N terminals;

[0075] The public information includes any of the following:

[0076] Broadcast service data;

[0077] Multicast service data;

[0078] System broadcast message;

[0079] Paging message.

[0080] Optionally, the first terminal further includes:

[0081] The second receiving module is used to receive the first downlink control information (DCI) and the first demodulation reference signal sent by the network-side device, and to receive the second DCI and the second demodulation reference signal corresponding to the first terminal.

[0082] First scheduling module: used to schedule the public information according to the first DCI.

[0083] The first demodulation module is used to demodulate the common information according to the first demodulation reference signal;

[0084] The second scheduling module is used to schedule the private information of the first terminal according to the second DCI corresponding to the first terminal.

[0085] The second demodulation module is used to demodulate the private information of the first terminal according to the second demodulation reference signal corresponding to the first terminal.

[0086] Optionally, the first DCI carries a first indication message, and / or the second DCI corresponding to the first terminal carries a second indication message corresponding to the first terminal. The first terminal further includes: a removal module, used to remove the demodulated public information according to the first DCI when the first indication message and / or the second indication message indicate that the public information and the private information exist on the same time-frequency resource;

[0087] Wherein, the first indication message is used to indicate whether the private information exists on the time-frequency resources of the public information, and the second indication message is used to indicate whether the public information exists on the time-frequency resources of the private information.

[0088] Optionally, when the first DCI and the second DCI corresponding to the first terminal are sent on the same PDCCH, the first DCI carries the first indication message, and / or the second DCI corresponding to the first terminal carries the second indication message corresponding to the first terminal.

[0089] When the first DCI and the second DCI corresponding to the first terminal are sent on different PDCCHs, the first DCI carries the first message indication message, and the second DCI corresponding to the first terminal carries the second indication message corresponding to the first terminal.

[0090] Optionally, the first DCI also carries a third indication message, which is used to indicate the transmission power of the public information;

[0091] The second DCI corresponding to the first terminal also carries a fourth indication message and a fifth indication message corresponding to the first terminal. The fourth indication message corresponding to the first terminal is used to indicate the transmission power of the private information of the first terminal, and the fifth indication message corresponding to the first terminal is used to indicate whether there is private information of other terminals on the time-frequency resources of the private information of the first terminal.

[0092] Fifthly, embodiments of the present invention also provide a network-side device, including a transceiver and a processor.

[0093] The processor is used to input preset requirement parameters into a pre-built optimization model. The preset requirement parameters include channel coefficients, noise figures, and constraint parameters between N terminals and the base station within the cell, where N is an integer greater than or equal to 1.

[0094] The processor is further configured to obtain the transmission power of the common information of the N terminals output by the optimization model with the goal of maximizing system performance indicators, and the transmission power corresponding to the private information of the N terminals output by the optimization model. The system performance indicators are determined based on the common information rate and private information rate of the N terminals.

[0095] The transceiver is configured to transmit the public information to the N terminals respectively on the same time-frequency resources according to the transmission power of the public information, and to transmit the private information of the N terminals respectively to the N terminals according to the transmission power corresponding to the private information of the N terminals.

[0096] Optionally, the private information of the N terminals is the service data of the N terminals;

[0097] The public information includes any of the following:

[0098] Broadcast service data;

[0099] Multicast service data;

[0100] System broadcast message;

[0101] Paging message.

[0102] Optionally, the transceiver is also used for:

[0103] The system sends a first downlink control information (DCI) and a first demodulation reference signal to the N terminals respectively, and sends a corresponding second DCI and a second demodulation reference signal to the N terminals respectively.

[0104] The first DCI is used to schedule the public information, and the first demodulation reference signal is used to demodulate the public information. The second DCI corresponding to the first terminal is used to schedule the private information of the first terminal, and the second demodulation reference signal corresponding to the first terminal is used to demodulate the private information of the first terminal. The first terminal is any one of the N terminals.

[0105] Optional

[0106] The first DCI carries a first indication message, and / or the second DCI corresponding to the first terminal carries a second indication message corresponding to the first terminal. The first indication message is used to indicate whether the private information exists on the time-frequency resources of the public information, and the second indication message is used to indicate whether the public information exists on the time-frequency resources of the private information.

[0107] Optionally, when the first DCI and the second DCI corresponding to the first terminal are sent on the same PDCCH, the first DCI carries the first indication message, and / or the second DCI corresponding to the first terminal carries the second indication message corresponding to the first terminal.

[0108] When the first DCI and the second DCI corresponding to the first terminal are sent on different PDCCHs, the first DCI carries the first indication message, and the second DCI corresponding to the first terminal carries the second indication message corresponding to the first terminal.

[0109] Optionally, the first DCI also carries a third indication message, which is used to indicate the transmission power of the public information;

[0110] The second DCI corresponding to the first terminal also carries a fourth indication message and a fifth indication message corresponding to the first terminal. The fourth indication message corresponding to the first terminal is used to indicate the transmission power of the private information of the first terminal, and the fifth indication message corresponding to the first terminal is used to indicate whether there is private information of other terminals on the time-frequency resources of the private information of the first terminal.

[0111] Optionally, the first demodulation reference signal and the second demodulation reference signals corresponding to the N terminals differ from each other in at least one of the following ways:

[0112] The sequence of reference signals;

[0113] The resources of the reference signal mapping include at least one of the time-domain resources, frequency-domain resources, and code-domain resources of the mapping;

[0114] The transmission power of the reference signal.

[0115] Sixthly, embodiments of the present invention also provide a terminal, which is a first terminal, comprising a transceiver and a processor.

[0116] The transceiver is configured to receive, on the same time-frequency resources, the common information transmitted by the network-side device according to the transmission power of the common information of N terminals, and to receive the private information of N terminals transmitted by the network-side device according to the transmission power corresponding to the private information of the first terminal, wherein the first terminal is any one of the N terminals, and N is an integer greater than or equal to 1.

[0117] The transmission power of the public information and the private information are the transmission power output by a pre-built optimization model with the goal of maximizing the system performance index. The system performance index is determined based on the public information rate and the private information rate of the N terminals.

[0118] Optionally, the private information of the N terminals is the service data of the N terminals;

[0119] The public information includes any of the following:

[0120] Broadcast service data;

[0121] Multicast service data;

[0122] System broadcast message;

[0123] Paging message.

[0124] Optionally, the transceiver is further configured to receive a first downlink control information (DCI) and a first demodulation reference signal, and to receive a second DCI and a second demodulation reference signal corresponding to the first terminal;

[0125] The processor is configured to schedule the public information according to the first DCI, demodulate the public information according to the first demodulation reference signal, schedule the private information of the first terminal according to the second DCI corresponding to the first terminal, and demodulate the private information of the first terminal according to the second demodulation reference signal corresponding to the first terminal.

[0126] Optionally, the processor is specifically used for:

[0127] The first DCI carries a first indication message, and / or the second DCI corresponding to the first terminal carries a second indication message corresponding to the first terminal. When the first indication message and / or the second indication message indicate that the public information and the private information exist on the same time-frequency resource, the demodulated public information is removed according to the first DCI after demodulating the public information.

[0128] Wherein, the first indication message is used to indicate whether the private information exists on the time-frequency resources of the public information, and the second indication message is used to indicate whether the public information exists on the time-frequency resources of the private information.

[0129] Optionally, when the first DCI and the second DCI corresponding to the first terminal are sent on the same PDCCH, the first DCI carries the first indication message, and / or the second DCI corresponding to the first terminal carries the second indication message corresponding to the first terminal.

[0130] When the first DCI and the second DCI corresponding to the first terminal are sent on different PDCCHs, the first DCI carries the first indication message, and the second DCI corresponding to the first terminal carries the second indication message corresponding to the first terminal.

[0131] Optionally, the first DCI also carries a third indication message, which is used to indicate the transmission power of the public information;

[0132] The second DCI corresponding to the first terminal also carries a fourth indication message and a fifth indication message corresponding to the first terminal. The fourth indication message corresponding to the first terminal is used to determine the transmission power of the private information of the first terminal, and the fifth indication message corresponding to the first terminal is used to indicate whether there is private information of other terminals on the time-frequency resources of the private information of the first terminal.

[0133] In a seventh aspect, embodiments of the present invention also provide a network-side device, including: a processor, a memory, and a program stored in the memory and executable on the processor, wherein the program, when executed by the processor, implements the steps of the information transmission method as described in the first aspect.

[0134] Eighthly, embodiments of the present invention also provide a terminal, including: a processor, a memory, and a program stored in the memory and executable on the processor, wherein when the program is executed by the processor, it implements the steps of the information transmission method as described in the second aspect.

[0135] In a ninth aspect, embodiments of the present invention also provide a computer-readable storage medium storing a computer program, wherein when executed by a processor, the computer program implements the steps of the information transmission method as described in the first aspect; or, when executed by the processor, the computer program implements the steps of the information transmission method as described in the second aspect.

[0136] In this embodiment of the invention, preset requirement parameters are input into a pre-constructed optimization model. These preset requirement parameters include channel coefficients, noise figures, and constraint parameters between N terminals and the base station within a cell. Based on these input preset requirement parameters, the optimization model aims to maximize system performance indicators and outputs the transmission power of public information for the N terminals, as well as the transmission power corresponding to the private information of the N terminals. Therefore, the optimization model in this embodiment aims to maximize system performance indicators. By obtaining the transmission power of public information and the transmission power corresponding to private information within the cell from the optimization model, and transmitting public and private information according to these respective transmission powers, it can effectively improve system performance and thus enhance the user's communication quality. Attached Figure Description

[0137] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0138] Figure 1 This is one of the flowcharts of an information sending method provided in an embodiment of the present invention;

[0139] Figure 2 This is a second flowchart of an information sending method provided in an embodiment of the present invention;

[0140] Figure 3 This is one of the structural schematic diagrams of a network-side device provided in an embodiment of the present invention;

[0141] Figure 4 This is one of the structural schematic diagrams of a terminal provided in an embodiment of the present invention;

[0142] Figure 5 This is a second schematic diagram of the structure of a network-side device provided in an embodiment of the present invention;

[0143] Figure 6 This is a second schematic diagram of the structure of a terminal provided in an embodiment of the present invention. Detailed Implementation

[0144] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0145] In this embodiment of the invention, an information transmission method and related equipment are proposed to solve the problem in the prior art where RSMA does not reasonably allocate the transmission power of public information and private information, resulting in poor communication quality for users.

[0146] See Figure 1 , Figure 1 This is one of the flowcharts of an information sending method provided in an embodiment of the present invention, applied to network-side devices, such as... Figure 1 As shown, the method includes the following steps:

[0147] Step 101: Input the preset requirement parameters into the pre-built optimization model. The preset requirement parameters include the channel coefficient, noise index, and constraint parameters between N terminals and the base station in the cell, where N is an integer greater than or equal to 1.

[0148] Step 102: Obtain the transmission power of the common information of the N terminals and the transmission power of the private information of the N terminals output by the optimization model with the goal of maximizing the system performance index. The system performance index is determined based on the common information rate and private information rate of the N terminals.

[0149] Step 103: On the same time-frequency resources, send the public information to the N terminals according to the transmission power of the public information, and send the private information of the N terminals to the N terminals according to the transmission power corresponding to the private information of the N terminals.

[0150] The method of this invention is applied to a network-side device, wherein the network-side device includes a base station.

[0151] In step 101, the network-side device inputs preset requirement parameters into a pre-built optimization model. These preset requirement parameters include the channel coefficients (h) between N terminals and the base station within the cell, the noise figures (σ) between the N terminals and the base station, and constraint parameters. The constraint parameters are determined based on terminal Quality of Service (QoS) requirements (e.g., information transmission rate requirements), transmit power constraints, linear operating area constraints, interference cancellation constraints, and common information rate constraints. By considering multiple constraints, the reliability of communication between the user and the network-side device can be guaranteed, and the user's communication quality requirements can be met.

[0152] In step 102, the optimization model aims to maximize the system's performance indicators. Based on the input preset requirement parameters, it outputs the transmission power of public information and the transmission power corresponding to private information. It should be noted that the transmission power in this embodiment can be a specific power value or a power allocation factor.

[0153] The system's performance metrics are determined based on the common information rate and private information rate of N terminals. The higher the sum of the common information rate and private information rate of the N terminals, the higher the system's performance metrics. In some embodiments, the optimization model can also output the common information rate and private information rate of the N terminals to calculate the transport block size of the common information and the transport block size corresponding to each private information.

[0154] In step 103, the network-side device transmits public and private information on the same time-frequency resources, thereby improving the resource utilization of the network-side device. Furthermore, the network-side device transmits public information to N terminals according to the transmission power of the public information obtained from the optimization model, and transmits private information to N terminals according to the transmission power corresponding to the private information of each of the N terminals, effectively improving the system's performance indicators.

[0155] In some implementations, the optimization model is as follows:

[0156]

[0157]

[0158]

[0159]

[0160]

[0161]

[0162]

[0163] In this embodiment, the total rate of public and private information from K terminals is determined as the system performance index, and the objective function is... The objective is to maximize the total rate, where parameter C k p represents the user's public information rate. k h represents the private information transmission power of terminal k. k σ represents the channel coefficient between terminal k and the base station. k Let λ represent the noise index between terminal k and the base station, where λ is a constant.

[0164] The first constraint in the optimization model ensures that the common information of all terminals can be successfully decoded, where h1 represents the channel coefficient of the terminal with the smallest channel noise ratio among the K terminals. In this embodiment, the K terminals can be sorted in ascending order according to their channel noise ratio, i.e.:

[0165]

[0166] The second constraint in the optimization model indicates that terminal k needs to achieve the minimum transmission rate. This includes the public information rate and the private information rate of terminal k. The minimum transmission rate can be determined based on factors such as the QoS requirements of terminal k.

[0167] The third constraint in the optimization model states that the total transmission power of public information and private information of K terminals cannot exceed the maximum transmission power of the base station.

[0168] The fourth constraint in the optimization model ensures that signal transmitting devices such as LEDs or RF power amplifiers operate in the linear region. This indicates the linear operating range of the base station.

[0169] The fifth constraint in the optimization model states that the transmit power must guarantee the performance of Successive Interference Cancellation (SIC), where θ is the minimum power difference to guarantee SIC operation.

[0170] In this embodiment, the input parameters to the optimization model are the terminal's channel coefficient h, the terminal's noise index σ, and the constraint parameters. P max , With θ, the optimization model can output the public information rate, private information rate, public information transmission power, and private information transmission power, all with the goal of optimizing system performance indicators.

[0171] To better understand the technical solutions of the embodiments of this application, the specific solutions to the above optimization problems are described below by way of example.

[0172] Step 1: Introduce auxiliary variable {w k} and {f k} represent the logarithmic values ​​of the transmission power of private information and the noise-to-channel ratio, respectively. Simultaneously, a relaxation variable {γ} is introduced. k} represents the logarithm of the terminal's signal-to-interference-plus-noise ratio (SIR).

[0173]

[0174]

[0175]

[0176] Step 2: Set the initial values ​​for auxiliary variables and slack variables. as well as The iteration indicator is m=1.

[0177] Step 3: During the iteration process, using the result of the (m-1)th iteration and continuous convex approximation, the private information rate of terminal k is approximated as:

[0178]

[0179] The common information rate of K terminals is approximately:

[0180]

[0181] The power of the common information of K terminals is approximately:

[0182]

[0183] Step 4: Solve the convex optimization subproblem: Maximize the sum of the public information rate and the private information rate. The constraints include:

[0184] a. Private information can be constrained by decoding:

[0185] b. Terminal QoS constraints:

[0186] c. Transmission power meets SiC limits:

[0187] d. Linear working region constraint:

[0188] e. Transmit power constraint:

[0189] f. Signal-to-interference-plus-noise ratio relaxation condition:

[0190] Step 5: Update m = m + 1, return to step (4-3), until the system and rate converge, i.e., obtain the optimal common information rate C. k And optimal private message transmission power And calculate the private information rate as

[0191] Step 6: Optimize the model output common information rate C k Private information rate Public information transmission power Private information transmission power corresponding to terminal k

[0192] In this embodiment of the invention, on the one hand, the network-side device transmits public information and private information on the same time-frequency resources, thereby improving the resource utilization rate of the network-side device; on the other hand, by obtaining the transmission power of public information output by the optimization model and the transmission power of private information within the cell, and transmitting public information and private information respectively according to the transmission power of public information and the transmission power of private information within the cell, the system performance can be effectively improved, thereby improving the user's communication quality.

[0193] In the related technologies of this invention: to improve the received signal-to-noise ratio (SNR) for users at the cell edge, base stations typically need to configure higher transmit power or lower-order modulation and coding schemes (MCS) to improve transmission reliability. However, this leads to lower resource utilization of network-side equipment.

[0194] Considering the problems in the aforementioned related technologies, optionally, the private information of the N terminals is the service data of the N terminals;

[0195] The public information includes any of the following:

[0196] Broadcast service data;

[0197] Multicast service data;

[0198] System broadcast message;

[0199] Paging message.

[0200] Paging refers to paging initiated by idle terminals listening to the core network, and paging initiated by inactive terminals listening to the core network and base stations. As a broadcast message, paging has strong coverage; generally, all users within a cell can receive and successfully decode the paging message. In addition, broadcast service data, multicast service data, and system broadcast messages are also messages with strong coverage.

[0201] In typical scenarios, paging messages, broadcast service data, multicast service data, and system broadcast messages, along with user service data, occupy different resources on network-side devices. This means network-side devices usually send these messages on different time-frequency resources, resulting in low resource utilization. In this embodiment, the network-side devices send public information and terminal service data on the same time-frequency resource, effectively improving resource utilization. Furthermore, paging messages, broadcast service data, multicast service data, and system broadcast messages offer excellent coverage. By sending these messages and terminal service data on the same time-frequency resource, the network-side devices can leverage the high coverage of this information, enabling cell-edge users to correctly demodulate data even when receiving signals with low signal-to-noise ratios.

[0202] It should be noted that the network-side equipment can pre-determine whether there are terminals in the cell whose service data can be transmitted on the same time-frequency resource as the aforementioned public information. When there are N terminals in the cell whose service data can be transmitted on the same time-frequency resource as the aforementioned public information, the transmission power of the public information and the transmission power of the user's service data can be obtained according to the above embodiment. On the same time-frequency resource, the public information is transmitted according to the transmission power of the public information, and the user's service data is transmitted according to the transmission power of the user's corresponding service data.

[0203] In this embodiment of the invention, by setting the private information of N terminals to be the service data of N terminals, and the public information to be a message with strong coverage, the network-side device can effectively improve the resource utilization rate of the network-side device when sending the service data and public information of the terminals on the same resources. Furthermore, the high coverage performance of the public information can be used to enable cell edge users to correctly demodulate data even when the received signal-to-noise ratio is low.

[0204] Optionally, after sending the public information to the N terminals according to the transmission power of the public information, and sending the private information of the N terminals to the N terminals according to the transmission power corresponding to the private information of the N terminals, the method further includes:

[0205] A first downlink control information (DCI) and a first demodulation reference signal are sent to the N terminals respectively, and a corresponding second DCI and a second demodulation reference signal are sent to the N terminals respectively. The first DCI is used to schedule the public information, and the first demodulation reference signal is used to demodulate the public information. The second DCI corresponding to the first terminal is used to schedule the private information of the first terminal, and the second demodulation reference signal corresponding to the first terminal is used to demodulate the private information of the first terminal. The first terminal is any one of the N terminals.

[0206] After the terminal receives public and private information, the network-side device sends a first DCI and a first demodulation reference signal, as well as a corresponding second DCI and a second demodulation reference signal to the terminal. The second DCI and the second demodulation reference signal are different for each of the N terminals.

[0207] The aforementioned first and second DCIs are transmitted on the Physical Downlink Control Channel (PDCCH). The terminal obtains the first and / or second DCIs by blindly detecting the PDCCH carrying the first and / or second DCIs. The first DCI indicates scheduling information such as the time-frequency resources of the scheduled public information and the MCS index table of the public information; the second DCI indicates scheduling information such as the time-frequency resources of the scheduled private information and the MCS index table of the private information.

[0208] According to Rate Division Multiple Access (RDA), after receiving the first DCI and the first demodulation reference signal, the terminal schedules common information based on the first DCI and demodulates the common information based on the first demodulation reference signal. After demodulating the common information, serial interference cancellation (FICC) is used to remove the common information from the received information. After removing the common information using FICC, if the aforementioned N is greater than 1, meaning that the N private information received by the terminal includes private information from other terminals, then the private information from other terminals is treated as interference. The terminal schedules its own private information according to the corresponding second DCI and demodulates its own private information according to the second demodulation reference signal. That is, the first terminal schedules its own private information according to the second DCI corresponding to the first terminal and demodulates its own private information according to the second demodulation reference signal corresponding to the first terminal. In a scenario where the private information of N terminals consists of the service data of N terminals, and the public information includes broadcast service data, multicast service data, system broadcast messages, or paging messages, the service data of the terminals can utilize the high coverage performance of the public information. After receiving the first DCI and the first demodulation reference signal, and receiving the corresponding second DCI and the second demodulation reference signal, the terminals can also promptly schedule and demodulate their service data to meet their service needs.

[0209] In this embodiment, the terminal receives the first DCI and the first demodulation reference signal and receives the corresponding second DCI and the second demodulation reference signal, which enables it to timely schedule and demodulate public information and its own private information, thereby effectively reducing the interference between public information and private information in the received information.

[0210] Optionally, the first DCI carries a first indication message, and / or the second DCI corresponding to the first terminal carries a second indication message corresponding to the first terminal. The first indication message is used to indicate whether the private information exists on the time-frequency resources of the public information, and the second indication message is used to indicate whether the public information exists on the time-frequency resources of the private information.

[0211] In this embodiment, the first terminal needs to select whether to demodulate the private information after demodulating the public information, based on the first indication message carried by the first DCI and / or the second indication message carried by the second DCI corresponding to the first terminal. For ease of understanding, the following description is provided in conjunction with specific embodiments.

[0212] Taking the first terminal as an example, if the private information of the first terminal is the service data of the first terminal, and the public information of the first terminal is the system broadcast message, the network-side device (taking the base station as an example) sends the service data of the first terminal and the system broadcast message on the same time-frequency resources. The specific steps are as follows:

[0213] Step 1: The base station sends a first PDCCH (PDCCH1) and a second PDCCH (PDCCH2) corresponding to the first terminal (UE1) on the same time and frequency resources. The first DCI is carried on PDCCH1 and the second DCI is carried on the second PDCCH.

[0214] Step 2: The base station sends a first demodulation reference signal (DMRS1) for demodulating system broadcast messages and a second demodulation reference signal (DMRS2) for demodulating the service data of UE1 to UE1.

[0215] Step 3: UE1 performs blind detection on PDCCH1 and PDCCH2, obtains the first DCI of the system broadcast message, and obtains the second DCI of the UE1 service data. Then, it demodulates the system message based on the channel estimation result of DMRS1.

[0216] 1) If the first DCI carries a first indication message and / or the second DCI carries a second indication message, and the first indication message indicates that service data exists on the time-frequency resources of the system broadcast message, and / or the second indication message indicates that the system broadcast message exists on the time-frequency resources of the service data, then UE1 removes the system broadcast message from the received signal based on the channel estimation result of DMRS1 and the transmission power of the system broadcast message. Where y represents the received signal, y2 is the received signal corresponding to UE1 service data, x1 is the demodulated system broadcast message, and P is the transmission power of the system broadcast message (obtained based on PDCCH1). Then, y2 is demodulated according to the channel estimation result of DMRS2 to obtain user data.

[0217] 2) If there is no service data on the resource of the first DCI indication system broadcast message on PDCCH1, then UE1 ends signal demodulation.

[0218] It should be noted that, when the network-side device does not send public and private information to the terminal on the same time-frequency resources, the network-side device may or may not carry the first indication message in the first DCI sent to the terminal.

[0219] In this embodiment of the application, by setting the first DCI to carry a first indication message, and / or the second DCI corresponding to the first terminal to carry a second indication message corresponding to the first terminal, it is possible to promptly indicate to the first terminal whether the received information includes public information and private information of the same time and frequency resources. Thus, the first terminal can promptly adopt the corresponding demodulation rules to demodulate the received signal, which is beneficial to improving the reliability of terminal signal demodulation.

[0220] Optionally, when the first DCI and the second DCI corresponding to the first terminal are sent on the same PDCCH, the first DCI carries the first indication message, and / or the second DCI corresponding to the first terminal carries the second indication message corresponding to the first terminal.

[0221] When the first DCI and the second DCI corresponding to the first terminal are sent on different PDCCHs, the first DCI carries the first indication message, and the second DCI corresponding to the first terminal carries the second indication message corresponding to the first terminal.

[0222] In this embodiment, when the first DCI and the second DCI corresponding to the first terminal are transmitted on the same PDCCH, the arrival times of the first DCI and the second DCI at the first terminal are consistent. Therefore, the first DCI can be configured to carry a first indication message, and / or the second DCI corresponding to the first terminal can carry a second indication message corresponding to the first terminal. In this way, the first terminal can promptly obtain whether the received information includes public and private information related to the same time-frequency resources.

[0223] When the first DCI and the second DCI corresponding to the terminal are sent on different PDCCHs, the arrival time of the first DCI and the second DCI to the first terminal may be uncertain. Based on this, by setting the first DCI to carry a first indication message and the second DCI corresponding to the first terminal to carry a second indication message corresponding to the first terminal, regardless of whether the first terminal receives the first DCI or the second DCI first, it can promptly obtain whether the received information includes public and private information of the same time-frequency resources. Thus, the first terminal can promptly adopt the corresponding scheduling and demodulation rules to schedule and demodulate the received information.

[0224] Optionally, the first DCI also carries a third indication message, which is used to determine the transmission power of the public information;

[0225] The second DCI corresponding to the first terminal also carries a fourth indication message and a fifth indication message corresponding to the first terminal. The fourth indication message corresponding to the first terminal is used to determine the transmission power of the private information of the first terminal, and the fifth indication message corresponding to the first terminal is used to indicate whether there is private information of other terminals on the time-frequency resources of the private information of the first terminal.

[0226] In this embodiment, the first DCI also carries a third indication message, which is used to determine the transmission power of the common information. The third indication message may be one or more of the following:

[0227] a. The absolute value of the transmission power or average transmission power of public information;

[0228] b. The ratio of the public information transmission power to the sum of the private information transmission power of each terminal (this can be used if the terminal can obtain the sum of the private information transmission power of each terminal);

[0229] c. The ratio of the average transmission power of public information to the sum of the average transmission power of private information of each terminal (this can be used if the terminal can obtain the sum of the average transmission power of private information of each terminal);

[0230] d. The ratio of the transmission power of public information to the total transmission power of the base station (this can be used if the terminal can obtain the total transmission power of the base station);

[0231] e. The ratio of the average transmission power of public information to the average transmission power of the base station (this can be used if the terminal can obtain the average transmission power of the base station);

[0232] f. The ratio of the transmission power of the public information to the transmission power of the first reference signal of the public information (this can be the case when the terminal can obtain the transmission power of the first reference signal);

[0233] g. The ratio of the average transmission power of the common information to the average transmission power of the first demodulation reference signal of the common information (this can be the case when the terminal can obtain the average transmission power of the first demodulation reference signal).

[0234] The transmission power of public information can be either the actual transmission power or the average transmission power of public information. The transmission power of public information in a to g above refers to the actual transmission power of public information.

[0235] The second DCI corresponding to the first terminal also carries a fourth indication message corresponding to the first terminal. The fourth indication message is used to determine the transmission power of the private messages of the first terminal. The fourth indication message can be one or more of the following:

[0236] a. The absolute value of the transmission power or average transmission power of private information;

[0237] b. The ratio of the private information transmission power to the sum of the private information transmission power of each terminal (this can be used if the terminal can obtain the sum of the private information transmission power of each terminal);

[0238] c. The ratio of the average transmission power of private information to the sum of the average transmission power of private information of each terminal (this can be used if the terminal can obtain the sum of the average transmission power of private information of each terminal);

[0239] d. The ratio of the transmission power of private information to the total transmission power of the base station (this can be used if the terminal can obtain the total transmission power of the base station);

[0240] e. The ratio of the average transmission power of private information to the average transmission power of the base station (this can be used if the terminal can obtain the average transmission power of the base station);

[0241] f. The ratio of the power of private information transmission to the sum of the power of public information transmission (this can be used if the terminal can obtain the sum of the power of public information transmission);

[0242] g. The ratio of the average transmission power of private information to the sum of the average transmission power of public information (this can be used if the terminal can obtain the sum of the average transmission power of public information);

[0243] h. The ratio of the private information transmission power to the transmission power of the second demodulation reference signal (this can be the case if the terminal can obtain the transmission power of the second demodulation reference signal);

[0244] i. The ratio of the average transmission power of private information to the average transmission power of the second reference signal (this can be the case when the terminal can obtain the average transmission power of the second reference signal);

[0245] j. The ratio of the private information transmission power to the transmission power of the first demodulation reference signal (this can be the case when the terminal can obtain the transmission power of the first demodulation reference signal);

[0246] k. The ratio of the average transmission power of private information to the average transmission power of the first demodulated reference signal (this can be the case when the terminal can obtain the average transmission power of the first demodulated reference signal);

[0247] The transmission power of private information can be either the actual transmission power or the average transmission power of private information. The transmission power of private information in a to k above refers to the actual transmission power of private information.

[0248] The second DCI corresponding to the first terminal also carries the fifth indication message corresponding to the first terminal. The fifth indication message corresponding to the first terminal indicates that if there is private information of other terminals on the time-frequency resources of the private information of the first terminal, the first terminal can regard the private information of other terminals as interference and demodulate the private information of the first terminal based on the second DCI and the second demodulation reference signal corresponding to the first terminal.

[0249] According to rate-division multiple access (RDMA), when scheduling and demodulating the public and private information of a terminal, it is necessary to utilize the public information transmission power and the private information transmission power of the terminal. In this embodiment of the invention, it is not limited that the first DCI must directly carry the public information transmission power, nor is it limited that the second DCI must directly carry the private information transmission power. As long as the public information transmission power can be determined based on the third indication message carried by the first DCI, and the private information transmission power can be determined based on the fourth indication message carried by the second DCI, it is acceptable. This can improve the flexibility of configuring the first DCI and the second DCI.

[0250] Optionally, the first demodulation reference signal and the second demodulation reference signals corresponding to the N terminals differ from each other in at least one of the following ways:

[0251] The sequence of reference signals;

[0252] The resources of the reference signal mapping include at least one of the time-domain resources, frequency-domain resources, and code-domain resources of the mapping;

[0253] The transmission power of the reference signal.

[0254] In this embodiment, as long as the first demodulation reference signal and the second demodulation reference signals corresponding to the N terminals are different from each other, the terminal can demodulate the corresponding information based on the corresponding reference signal. The above setting helps to improve the flexibility of the reference signal setting.

[0255] It should be noted that the transmission power of the reference signal and the transmission power of the information need to meet a certain ratio (i.e., power scaling factor). Specifically, the transmission power of the first demodulation reference signal needs to meet the ratio of the transmission power of the public information to the transmission power of the first demodulation reference signal, or the ratio of the average transmission power of the public information to the average transmission power of the first demodulation reference signal, as specified in the third indication message in the above embodiment. The transmission power of the second demodulation reference signal needs to meet the ratio of the transmission power of the private information to the transmission power of the second demodulation reference signal, or the ratio of the average transmission power of the private information to the average transmission power of the second demodulation reference signal, as specified in the fourth indication message.

[0256] For ease of understanding, several specific embodiments of the first demodulation reference signal and the second demodulation reference signal are provided below.

[0257] Example 1: The sequences of the first demodulation reference signal and each of the second demodulation reference signals are different, but they are transmitted on the same resource. Different scrambling IDs can be generated and configured for the sequences of the first demodulation reference signal and each of the second demodulation reference signals, resulting in different initial values ​​and thus generating different sequences. The transmission power of the first demodulation reference signal and each of the second demodulation reference signals can be different.

[0258] Example 2: The sequences of the first demodulation reference signal and each of the second demodulation reference signals may be different or the same, and they are transmitted on different resources, which include at least one of time-domain resources, frequency-domain resources, and code-domain resources. The transmission power of the first demodulation reference signal and each of the second demodulation reference signals may be different or the same.

[0259] Example 3: The first demodulation reference signal and each of the second demodulation reference signals are the same reference signal, but the transmission power of the first demodulation reference signal and each of the second demodulation reference signals are different.

[0260] See Figure 2 , Figure 2 This is a second flowchart of an information sending method provided in an embodiment of the present invention, applied to a terminal, wherein the terminal is a first terminal, as shown below. Figure 2 As shown, the method includes the following steps:

[0261] Step 201: On the same time-frequency resources, receive the public information transmitted by the network-side device according to the transmission power of the public information of N terminals, and receive the private information of N terminals transmitted by the network-side device according to the transmission power corresponding to the private information of the first terminal, where the first terminal is any one of the N terminals and N is an integer greater than or equal to 1.

[0262] The transmission power of the public information and the private information are the transmission power output by a pre-built optimization model with the goal of maximizing the system performance index. The system performance index is determined based on the public information rate and the private information rate of the N terminals.

[0263] Optionally, the private information of the N terminals is the service data of the N terminals;

[0264] The public information includes any of the following:

[0265] Broadcast service data;

[0266] Multicast service data;

[0267] System broadcast message;

[0268] Paging message.

[0269] Optionally, after receiving the public information transmitted by the network-side device according to the transmission power of the public information of N terminals, and receiving the private information of N terminals transmitted by the network-side device according to the transmission power corresponding to the private information of the first terminal, the method further includes:

[0270] Receive the first downlink control information (DCI) and the first demodulation reference signal, as well as the second DCI and the second demodulation reference signal corresponding to the first terminal;

[0271] The public information is scheduled according to the first DCI, and the public information is demodulated according to the first demodulation reference signal. The private information of the first terminal is scheduled according to the second DCI corresponding to the first terminal, and the private information of the first terminal is demodulated according to the second demodulation reference signal corresponding to the first terminal.

[0272] Optionally, before scheduling the private information of the first terminal according to the second DCI corresponding to the first terminal, the method further includes:

[0273] The first DCI carries a first indication message, and / or the second DCI corresponding to the first terminal carries a second indication message corresponding to the first terminal. When the first indication message and / or the second indication message indicate that the public information and the private information exist on the same time-frequency resource, after demodulating the public information, the demodulated public information is removed according to the first DCI.

[0274] Wherein, the first indication message is used to indicate whether the private information exists on the time-frequency resources of the public information, and the second indication message is used to indicate whether the public information exists on the time-frequency resources of the private information.

[0275] Optionally, when the first DCI and the second DCI corresponding to the first terminal are sent on the same PDCCH, the first DCI carries the first indication message, and / or the second DCI corresponding to the first terminal carries the second indication message corresponding to the first terminal.

[0276] When the first DCI and the second DCI corresponding to the first terminal are sent on different PDCCHs, the first DCI carries the first indication message, and the second DCI corresponding to the first terminal carries the second indication message corresponding to the first terminal.

[0277] Optionally, the first DCI also carries a third indication message, which is used to determine the transmission power of the public information;

[0278] The second DCI corresponding to the first terminal also carries a fourth indication message and a fifth indication message corresponding to the first terminal. The fourth indication message corresponding to the first terminal is used to determine the transmission power of the private information of the first terminal, and the fifth indication message corresponding to the first terminal is used to indicate whether there is private information of other terminals on the time-frequency resources of the private information of the first terminal.

[0279] It should be noted that this embodiment is as a comparison with... Figure 1 The embodiments shown in the diagram correspond to the implementation methods of the terminal. For specific implementation methods, please refer to [link / reference]. Figure 1 The related descriptions of the embodiments shown will not be repeated in this embodiment to avoid repetition, and can achieve the same beneficial effects.

[0280] See Figure 3 , Figure 3 This is one of the structural schematic diagrams of a network-side device provided in an embodiment of the present invention, such as... Figure 3 As shown, the network-side device 300 includes:

[0281] The input module 301 is used to input preset requirement parameters into a pre-built optimization model. The preset requirement parameters include the channel coefficient, noise index, and constraint parameters between N terminals and the base station in the cell, where N is an integer greater than or equal to 1.

[0282] The acquisition module 302 is used to acquire the transmission power of the common information of the N terminals output by the optimization model with the goal of maximizing the system performance index, and the transmission power of the private information of the N terminals output by the optimization model. The system performance index is determined based on the common information rate and private information rate of the N terminals.

[0283] The first transmitting module 303 is configured to transmit the public information to the N terminals respectively according to the transmission power of the public information on the same time-frequency resources, and to transmit the private information of the N terminals respectively according to the transmission power corresponding to the private information of the N terminals.

[0284] Optionally, the private information of the N terminals is the service data of the N terminals;

[0285] The public information includes any of the following:

[0286] Broadcast service data;

[0287] Multicast service data;

[0288] System broadcast message;

[0289] Paging message.

[0290] Optionally, the network-side device further includes:

[0291] The second transmitting module is used to transmit the first DCI and the first demodulation reference signal to the N terminals respectively, and to transmit the corresponding second DCI and the second demodulation reference signal to the N terminals respectively;

[0292] The first DCI is used to schedule the public information, and the first demodulation reference signal is used to demodulate the public information. The second DCI corresponding to the first terminal is used to schedule the private information of the first terminal, and the second demodulation reference signal corresponding to the first terminal is used to demodulate the private information of the first terminal. The first terminal is any one of the N terminals.

[0293] Optional,

[0294] The first DCI carries a first indication message, and / or the second DCI corresponding to the first terminal carries a second indication message corresponding to the first terminal. The first indication message is used to indicate whether the private information exists on the time-frequency resources of the public information, and the second indication message is used to indicate whether the public information exists on the time-frequency resources of the private information.

[0295] Optionally, when the first DCI and the second DCI corresponding to the first terminal are sent on the same PDCCH, the first DCI carries the first indication message, and / or the second DCI corresponding to the first terminal carries the second indication message corresponding to the first terminal.

[0296] When the first DCI and the second DCI corresponding to the first terminal are sent on different PDCCHs, the first DCI carries the first indication message, and the second DCI corresponding to the first terminal carries the second indication message corresponding to the first terminal.

[0297] Optionally, the first DCI also carries a third indication message, which is used to determine the transmission power of the public information;

[0298] The second DCI corresponding to the first terminal also carries a fourth indication message and a fifth indication message corresponding to the first terminal. The fourth indication message corresponding to the first terminal is used to determine the transmission power of the private information of the first terminal, and the fifth indication message corresponding to the first terminal is used to indicate whether there is private information of other terminals on the time-frequency resources of the private information of the first terminal.

[0299] Optionally, the first demodulation reference signal and the second demodulation reference signals corresponding to the N terminals differ from each other in at least one of the following ways:

[0300] The sequence of reference signals;

[0301] The resources of the reference signal mapping include at least one of the time-domain resources, frequency-domain resources, and code-domain resources of the mapping;

[0302] The transmission power of the reference signal.

[0303] Network-side device 300 can achieve Figure 1 The various processes implemented by the network-side device in the illustrated method embodiment can achieve the same beneficial effects, and will not be described again here to avoid repetition.

[0304] See Figure 4 , Figure 4 This is one of the structural schematic diagrams of a terminal provided in an embodiment of the present invention, such as... Figure 4 As shown, the terminal is a first terminal, and the first terminal 400 includes:

[0305] The first receiving module 401 is used to receive, on the same time-frequency resources, the public information transmitted by the network-side device according to the transmission power of the public information of N terminals, and to receive the private information of N terminals transmitted by the network-side device according to the transmission power corresponding to the private information of the first terminal, wherein the first terminal is any one of the N terminals, and N is an integer greater than or equal to 1.

[0306] The transmission power of the public information and the private information are the transmission power output by a pre-built optimization model with the goal of maximizing the system performance index. The system performance index is determined based on the public information rate and the private information rate of the N terminals.

[0307] Optionally, the private information of the N terminals is the service data of the N terminals;

[0308] The public information includes any of the following:

[0309] Broadcast service data;

[0310] Multicast service data;

[0311] System broadcast message;

[0312] Paging message.

[0313] Optionally, the first terminal 400 further includes:

[0314] The second receiving module is used to receive the first DCI and the first demodulation reference signal, as well as the second DCI and the second demodulation reference signal corresponding to the first terminal.

[0315] First scheduling module: used to schedule the public information according to the first DCI.

[0316] The first demodulation module is used to demodulate the common information based on the first demodulation reference signal.

[0317] The second scheduling module is used to schedule the private information of the first terminal according to the second DCI corresponding to the first terminal.

[0318] The second demodulation module is used to demodulate the private information of the first terminal according to the second demodulation reference signal corresponding to the first terminal.

[0319] Optionally, the first DCI carries a first indication message, and / or the second DCI corresponding to the first terminal carries a second indication message corresponding to the first terminal, wherein the demodulation module is specifically used for:

[0320] If the first indication message and / or the second indication message indicate that the public information and the private information exist on the same time-frequency resource, the demodulated public information is removed according to the first DCI after demodulating the public information;

[0321] Wherein, the first indication message is used to indicate whether the private information exists on the time-frequency resources of the public information, and the second indication message is used to indicate whether the public information exists on the time-frequency resources of the private information.

[0322] Optionally, when the first DCI and the second DCI corresponding to the first terminal are sent on the same PDCCH, the first DCI carries the first indication message, and / or the second DCI corresponding to the first terminal carries the second indication message corresponding to the first terminal.

[0323] When the first DCI and the second DCI corresponding to the first terminal are sent on different PDCCHs, the first DCI carries the first indication message, and the second DCI corresponding to the first terminal carries the second indication message corresponding to the first terminal.

[0324] Optionally, the first DCI also carries a third indication message, which is used to determine the transmission power of the public information;

[0325] The second DCI corresponding to the first terminal also carries a fourth indication message and a fifth indication message corresponding to the first terminal. The fourth indication message corresponding to the first terminal is used to determine the transmission power of the private information of the first terminal, and the fifth indication message corresponding to the first terminal is used to indicate whether there is private information of other terminals on the time-frequency resources of the private information of the first terminal.

[0326] Terminal 400 can achieve Figure 1 The various processes implemented in the terminal in the method embodiment shown can achieve the same beneficial effects, and will not be described again here to avoid repetition.

[0327] This invention also provides a network-side device, including: a processor, a memory, and a program stored in the memory and executable on the processor. When the program is executed by the processor, it implements the various processes of the above-described information transmission method embodiments applied to the network-side device and achieves the same technical effect. To avoid repetition, it will not be described again here.

[0328] For details, see Figure 5 As shown, this embodiment of the invention also provides a network-side device, including a bus 501, a transceiver 502, an antenna 503, a bus interface 504, a processor 505, and a memory 506.

[0329] The processor is used to input preset requirement parameters into a pre-built optimization model. The preset requirement parameters include channel coefficients, noise figures, and constraint parameters between N terminals and the base station within the cell, where N is an integer greater than or equal to 1.

[0330] The processor is further configured to obtain the transmission power of the common information of the N terminals output by the optimization model with the goal of maximizing system performance indicators, and the transmission power corresponding to the private information of the N terminals output by the optimization model. The system performance indicators are determined based on the common information rate and private information rate of the N terminals.

[0331] The transceiver is configured to transmit the public information to the N terminals respectively on the same time-frequency resources according to the transmission power of the public information, and to transmit the private information of the N terminals respectively to the N terminals according to the transmission power corresponding to the private information of the N terminals.

[0332] Optionally, the private information of the N terminals is the service data of the N terminals;

[0333] The public information includes any of the following:

[0334] Broadcast service data;

[0335] Multicast service data;

[0336] System broadcast message;

[0337] Paging message.

[0338] Optionally, the transceiver is also used for:

[0339] The first DCI and the first demodulation reference signal, as well as the corresponding second DCI and the second demodulation reference signal, are sent to the N terminals respectively.

[0340] The first DCI is used to schedule the public information, and the first demodulation reference signal is used to demodulate the public information. The second DCI corresponding to the first terminal is used to schedule the private information of the first terminal, and the second demodulation reference signal corresponding to the first terminal is used to demodulate the private information of the first terminal. The first terminal is any one of the N terminals.

[0341] Optional,

[0342] The first DCI carries a first indication message, and / or the second DCI corresponding to the first terminal carries a second indication message corresponding to the first terminal. The first indication message is used to indicate whether the private information exists on the time-frequency resources of the public information, and the second indication message is used to indicate whether the public information exists on the time-frequency resources of the private information.

[0343] Optionally, when the first DCI and the second DCI corresponding to the first terminal are sent on the same PDCCH, the first DCI carries the first indication message, and / or the second DCI corresponding to the first terminal carries the second indication message corresponding to the first terminal.

[0344] When the first DCI and the second DCI corresponding to the first terminal are sent on different PDCCHs, the first DCI carries the first indication message, and the second DCI corresponding to the first terminal carries the second indication message corresponding to the first terminal.

[0345] Optionally, the first DCI also carries a third indication message, which is used to determine the transmission power of the public information;

[0346] The second DCI corresponding to the first terminal also carries a fourth indication message and a fifth indication message corresponding to the first terminal. The fourth indication message corresponding to the first terminal is used to determine the transmission power of the private information of the first terminal, and the fifth indication message corresponding to the first terminal is used to indicate whether there is private information of other terminals on the time-frequency resources of the private information of the first terminal.

[0347] Optionally, the first demodulation reference signal and the second demodulation reference signals corresponding to the N terminals differ from each other in at least one of the following ways:

[0348] The sequence of reference signals;

[0349] The resources of the reference signal mapping include at least one of the time-domain resources, frequency-domain resources, and code-domain resources of the mapping;

[0350] The transmission power of the reference signal.

[0351] exist Figure 5 In this document, a bus architecture (represented by bus 501) is used. Bus 501 can include any number of interconnected buses and bridges, linking various circuits including one or more processors represented by processor 505 and memory represented by memory 506. Bus 501 can also link various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and therefore will not be described further herein. Bus interface 504 provides an interface between bus 501 and transceiver 502. Transceiver 502 can be a single element or multiple elements, such as multiple receivers and transmitters, providing a unit for communicating with various other devices over a transmission medium. Data processed by processor 505 is transmitted over a wireless medium via antenna 503, which further receives data and transmits it to processor 505.

[0352] Processor 505 manages bus 501 and general processing, and also provides various functions, including timing, peripheral interfaces, voltage regulation, power management, and other control functions. Memory 506 can be used to store data used by processor 505 during operation.

[0353] Optionally, the processor 505 can be a CPU, ASIC, FPGA, or CPLD.

[0354] This invention also provides a terminal, which is a first terminal, including: a processor, a memory, and a program stored in the memory and executable on the processor. When the program is executed by the processor, it implements the various processes of the above-described information sending method embodiments applied to the first terminal and achieves the same technical effect. To avoid repetition, it will not be described again here.

[0355] For details, see Figure 6 As shown, this embodiment of the invention also provides a terminal, including a bus 601, a transceiver 602, an antenna 603, a bus interface 604, a processor 605, and a memory 606.

[0356] The transceiver is configured to receive, on the same time-frequency resources, the common information transmitted by the network-side device according to the transmission power of the common information of N terminals, and to receive the private information of N terminals transmitted by the network-side device according to the transmission power corresponding to the private information of the first terminal, wherein the first terminal is any one of the N terminals, and N is an integer greater than or equal to 1.

[0357] The transmission power of the public information and the private information are the transmission power output by a pre-built optimization model with the goal of maximizing the system performance index. The system performance index is determined based on the public information rate and the private information rate of the N terminals.

[0358] Optionally, the private information of the N terminals is the service data of the N terminals;

[0359] The public information includes any of the following:

[0360] Broadcast service data;

[0361] Multicast service data;

[0362] System broadcast message;

[0363] Paging message.

[0364] Optionally, the transceiver is further configured to receive a first DCI and a first demodulation reference signal, as well as a second DCI and a second demodulation reference signal corresponding to the first terminal;

[0365] The processor is used for:

[0366] The public information is scheduled according to the first DCI, and the public information is demodulated according to the first demodulation reference signal;

[0367] The private information of the first terminal is scheduled according to the second DCI corresponding to the first terminal, and the private information of the first terminal is demodulated according to the second demodulation reference signal corresponding to the first terminal.

[0368] Optionally, the first DCI carries a first indication message, and / or the second DCI corresponding to the first terminal carries a second indication message corresponding to the first terminal. In the first indication message and / or the second indication message, the processor is specifically used for:

[0369] If the first indication message and / or the second indication message indicate that the public information and the private information exist on the same time-frequency resource, the demodulated public information is removed according to the first DCI after demodulating the public information;

[0370] Wherein, the first indication message is used to indicate whether the private information exists on the time-frequency resources of the public information, and the second indication message is used to indicate whether the public information exists on the time-frequency resources of the private information.

[0371] Optionally, when the first DCI and the second DCI corresponding to the first terminal are sent on the same PDCCH, the first DCI carries the first indication message, and / or the second DCI corresponding to the first terminal carries the second indication message corresponding to the first terminal.

[0372] When the first DCI and the second DCI corresponding to the first terminal are sent on different PDCCHs, the first DCI carries the first indication message, and the second DCI corresponding to the first terminal carries the second indication message corresponding to the first terminal.

[0373] Optionally, the first DCI also carries a third indication message, which is used to determine the transmission power of the public information;

[0374] The second DCI corresponding to the first terminal also carries a fourth indication message and a fifth indication message corresponding to the first terminal. The fourth indication message corresponding to the first terminal is used to determine the transmission power of the private information of the first terminal, and the fifth indication message corresponding to the first terminal is used to indicate whether there is private information of other terminals on the time-frequency resources of the private information of the first terminal.

[0375] exist Figure 6 In this document, a bus architecture (represented by bus 601) is used. Bus 601 may include any number of interconnected buses and bridges, linking various circuits including one or more processors represented by processor 605 and memory represented by memory 606. Bus 601 may also link various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and therefore will not be described further herein. Bus interface 604 provides an interface between bus 601 and transceiver 602. Transceiver 602 may be a single element or multiple elements, such as multiple receivers and transmitters, providing a unit for communicating with various other devices over a transmission medium. Data processed by processor 605 is transmitted over a wireless medium via antenna 603, which further receives data and transmits data to processor 605.

[0376] Processor 605 manages bus 601 and general processing, and also provides various functions, including timing, peripheral interface, voltage regulation, power management, and other control functions. Memory 606 can be used to store data used by processor 605 during operation.

[0377] Optionally, the processor 605 can be a CPU, ASIC, FPGA, or CPLD.

[0378] This invention also provides a computer-readable storage medium storing a computer program. When executed by a processor, this computer program implements the various processes of the above-described information transmission method embodiments and achieves the same technical effects. To avoid repetition, it will not be described again here. The computer-readable storage medium may be a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, etc.

[0379] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0380] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk), and includes several instructions to cause a terminal (which may be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in the various embodiments of the present invention.

[0381] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of the present invention.

Claims

1. A method for sending information, characterized in that, Applied to network-side devices, the method includes: The preset requirement parameters are input into the pre-built optimization model. The preset requirement parameters include the channel coefficients, noise figures, and constraint parameters between N terminals and the base station in the cell, where N is an integer greater than or equal to 1. The constraint parameters are determined based on terminal service quality requirements, transmit power constraints, linear operating area constraints, interference cancellation constraints, and public information rate constraints. The optimization model aims to maximize system performance indicators by outputting the transmission power of the common information of the N terminals and the transmission power of the private information of the N terminals. The system performance indicators are determined based on the common information rate and private information rate of the N terminals. On the same time-frequency resources, the public information is sent to the N terminals according to the transmission power of the public information, and the private information of the N terminals is sent to the N terminals according to the transmission power corresponding to the private information of the N terminals. The private information of the N terminals is the business data of the N terminals; The public information includes any of the following: Broadcast service data; Multicast service data; System broadcast message; Paging messages; After sending the public information to the N terminals according to the transmission power of the public information, and sending the private information of the N terminals to the N terminals according to the transmission power corresponding to the private information of the N terminals, the method further includes: The system sends a first downlink control information (DCI) and a first demodulation reference signal to each of the N terminals, and sends a corresponding second DCI and a second demodulation reference signal to each of the N terminals. The first DCI is used to schedule the public information, and the first demodulation reference signal is used to demodulate the public information. The second DCI corresponding to the first terminal is used to schedule the private information of the first terminal, and the second demodulation reference signal corresponding to the first terminal is used to demodulate the private information of the first terminal. The first terminal is any one of the N terminals. The first DCI carries a first indication message, and / or the second DCI corresponding to the first terminal carries a second indication message corresponding to the first terminal. The first indication message is used to indicate whether the private information exists on the time-frequency resources of the public information, and the second indication message is used to indicate whether the public information exists on the time-frequency resources of the private information.

2. The method according to claim 1, characterized in that, When the first DCI and the second DCI corresponding to the first terminal are transmitted on the same physical downlink control channel (PDCCH), the first DCI carries the first indication message, and / or the second DCI corresponding to the first terminal carries the second indication message corresponding to the first terminal. When the first DCI and the second DCI corresponding to the first terminal are sent on different PDCCHs, the first DCI carries the first indication message, and the second DCI corresponding to the first terminal carries the second indication message corresponding to the first terminal.

3. The method according to claim 1, characterized in that, The first DCI also carries a third indication message, which is used to indicate the transmission power of the public information; The second DCI corresponding to the first terminal also carries a fourth indication message and a fifth indication message corresponding to the first terminal. The fourth indication message corresponding to the first terminal is used to indicate the transmission power of the private information of the first terminal, and the fifth indication message corresponding to the first terminal is used to indicate whether there is private information of other terminals on the time-frequency resources of the private information of the first terminal.

4. The method according to claim 1, characterized in that, The first demodulation reference signal and the second demodulation reference signals corresponding to the N terminals differ from each other in at least one of the following ways: The sequence of reference signals; The resources of the reference signal mapping include at least one of the time-domain resources, frequency-domain resources, and code-domain resources of the mapping; The transmission power of the reference signal.

5. A method for sending information, characterized in that, Applied to a terminal, wherein the terminal is a first terminal, the method includes: On the same time-frequency resources, the network-side device receives the public information transmitted by the network-side device according to the transmission power of the public information of N terminals, and receives the private information of N terminals transmitted by the network-side device according to the transmission power corresponding to the private information of the first terminal, where the first terminal is any one of the N terminals and N is an integer greater than or equal to 1. The transmission power of the public information and the private information are the transmission power output by a pre-built optimization model with the goal of maximizing the system performance index. The system performance index is determined based on the public information rate and the private information rate of the N terminals. The private information of the N terminals is the business data of the N terminals; The public information includes any of the following: Broadcast service data; Multicast service data; System broadcast message; Paging messages; After receiving the public information transmitted by the network-side device according to the transmission power of the public information of N terminals, and receiving the private information of N terminals transmitted by the network-side device according to the transmission power corresponding to the private information of the first terminal, the method further includes: The device receives a first downlink control information (DCI) and a first demodulation reference signal sent by the network-side device, and also receives a second DCI and a second demodulation reference signal corresponding to the first terminal. The public information is scheduled according to the first DCI, and the public information is demodulated according to the first demodulation reference signal; The private information of the first terminal is scheduled according to the second DCI corresponding to the first terminal, and the private information of the first terminal is demodulated according to the second demodulation reference signal corresponding to the first terminal. Before scheduling the private information of the first terminal according to the second DCI corresponding to the first terminal, the method further includes: The first DCI carries a first indication message, and / or the second DCI corresponding to the first terminal carries a second indication message corresponding to the first terminal. When the first indication message and / or the second indication message indicate that the public information and the private information exist on the same time-frequency resource, after demodulating the public information, the demodulated public information is removed according to the first DCI. Wherein, the first indication message is used to indicate whether the private information exists on the time-frequency resources of the public information, and the second indication message is used to indicate whether the public information exists on the time-frequency resources of the private information.

6. The method according to claim 5, characterized in that, When the first DCI and the second DCI corresponding to the first terminal are transmitted on the same physical downlink control channel (PDCCH), the first DCI carries the first indication message, and / or the second DCI corresponding to the first terminal carries the second indication message corresponding to the first terminal. When the first DCI and the second DCI corresponding to the first terminal are sent on different PDCCHs, the first DCI carries the first indication message, and the second DCI corresponding to the first terminal carries the second indication message corresponding to the first terminal.

7. The method according to claim 5, characterized in that, The first DCI also carries a third indication message, which is used to indicate the transmission power of the public information; The second DCI corresponding to the first terminal also carries a fourth indication message and a fifth indication message corresponding to the first terminal. The fourth indication message corresponding to the first terminal is used to indicate the transmission power of the private information of the first terminal, and the fifth indication message corresponding to the first terminal is used to indicate whether there is private information of other terminals on the time-frequency resources of the private information of the first terminal.

8. A network-side device, characterized in that, include: The input module is used to input preset requirement parameters into a pre-built optimization model. The preset requirement parameters include the channel coefficients, noise figures, and constraint parameters between N terminals and the base station in the cell, where N is an integer greater than or equal to 1. The constraint parameters are determined based on terminal service quality requirements, transmit power constraints, linear operating area constraints, interference cancellation constraints, and public information rate constraints. The acquisition module is used to acquire the transmission power of the common information of the N terminals output by the optimization model with the goal of maximizing the system performance index, and the transmission power of the private information of the N terminals output by the optimization model. The system performance index is determined based on the common information rate and private information rate of the N terminals. The first transmitting module is configured to transmit the public information to the N terminals respectively according to the transmission power of the public information on the same time-frequency resources, and to transmit the private information of the N terminals respectively according to the transmission power corresponding to the private information of the N terminals. The private information of the N terminals is the business data of the N terminals; The public information includes any of the following: Broadcast service data; Multicast service data; System broadcast message; Paging messages; The second transmitting module is used to transmit the first DCI and the first demodulation reference signal to the N terminals respectively, and to transmit the corresponding second DCI and the second demodulation reference signal to the N terminals respectively; The first DCI is used to schedule the public information, and the first demodulation reference signal is used to demodulate the public information. The second DCI corresponding to the first terminal is used to schedule the private information of the first terminal, and the second demodulation reference signal corresponding to the first terminal is used to demodulate the private information of the first terminal. The first terminal is any one of the N terminals. The first DCI carries a first indication message, and / or the second DCI corresponding to the first terminal carries a second indication message corresponding to the first terminal. The first indication message is used to indicate whether the private information exists on the time-frequency resources of the public information, and the second indication message is used to indicate whether the public information exists on the time-frequency resources of the private information.

9. A terminal, characterized in that, The terminal is a first terminal, and the first terminal includes: The first receiving module is configured to receive, on the same time-frequency resources, the common information transmitted by the network-side device according to the transmission power of the common information of N terminals, and to receive the private information of N terminals transmitted by the network-side device according to the transmission power corresponding to the private information of the first terminal, wherein the first terminal is any one of the N terminals, and N is an integer greater than or equal to 1. The transmission power of the public information and the private information are the transmission power output by a pre-built optimization model with the goal of maximizing the system performance index. The system performance index is determined based on the public information rate and the private information rate of the N terminals. The private information of the N terminals is the business data of the N terminals; The public information includes any of the following: Broadcast service data; Multicast service data; System broadcast message; Paging messages; The second receiving module is used to receive the first DCI and the first demodulation reference signal, as well as the second DCI and the second demodulation reference signal corresponding to the first terminal. First scheduling module: used to schedule the public information according to the first DCI; The first demodulation module is used to demodulate the common information based on the first demodulation reference signal. The second scheduling module is used to schedule the private information of the first terminal according to the second DCI corresponding to the first terminal. The second demodulation module is used to demodulate the private information of the first terminal according to the second demodulation reference signal corresponding to the first terminal; The first DCI carries a first indication message, and / or the second DCI corresponding to the first terminal carries a second indication message corresponding to the first terminal. The demodulation module is specifically used for: If the first indication message and / or the second indication message indicate that the public information and the private information exist on the same time-frequency resource, the demodulated public information is removed according to the first DCI after demodulating the public information; Wherein, the first indication message is used to indicate whether the private information exists on the time-frequency resources of the public information, and the second indication message is used to indicate whether the public information exists on the time-frequency resources of the private information.

10. A network-side device, characterized in that, Including transceivers and processors, The processor is used to input preset requirement parameters into a pre-built optimization model. The preset requirement parameters include channel coefficients, noise figures, and constraint parameters between N terminals and the base station in the cell, where N is an integer greater than or equal to 1. The constraint parameters are determined based on terminal service quality requirements, transmit power constraints, linear operating area constraints, interference cancellation constraints, and public information rate constraints. The processor is further configured to obtain the transmission power of the common information of the N terminals output by the optimization model with the goal of maximizing system performance indicators, and the transmission power corresponding to the private information of the N terminals output by the optimization model. The system performance indicators are determined based on the common information rate and private information rate of the N terminals. The transceiver is configured to transmit the public information to the N terminals respectively on the same time-frequency resources according to the transmission power of the public information, and to transmit the private information of the N terminals respectively to the N terminals according to the transmission power corresponding to the private information of the N terminals. The private information of the N terminals is the business data of the N terminals; The public information includes any of the following: Broadcast service data; Multicast service data; System broadcast message; Paging messages; The transceiver is also used for: The first DCI and the first demodulation reference signal, as well as the corresponding second DCI and the second demodulation reference signal, are sent to the N terminals respectively. The first DCI is used to schedule the public information, and the first demodulation reference signal is used to demodulate the public information. The second DCI corresponding to the first terminal is used to schedule the private information of the first terminal, and the second demodulation reference signal corresponding to the first terminal is used to demodulate the private information of the first terminal. The first terminal is any one of the N terminals. The first DCI carries a first indication message, and / or the second DCI corresponding to the first terminal carries a second indication message corresponding to the first terminal. The first indication message is used to indicate whether the private information exists on the time-frequency resources of the public information, and the second indication message is used to indicate whether the public information exists on the time-frequency resources of the private information.

11. A terminal, characterized in that, The terminal is a first terminal, which includes a transceiver and a processor. The transceiver is configured to receive, on the same time-frequency resources, the common information transmitted by the network-side device according to the transmission power of the common information of N terminals, and to receive the private information of N terminals transmitted by the network-side device according to the transmission power corresponding to the private information of the first terminal, wherein the first terminal is any one of the N terminals, and N is an integer greater than or equal to 1. The transmission power of the public information and the private information are output by a pre-built optimization model with the goal of maximizing the system performance index. The system performance index is determined based on the public information rate and the private information rate of the N terminals. The private information of the N terminals is the business data of the N terminals; The public information includes any of the following: Broadcast service data; Multicast service data; System broadcast message; Paging messages; The transceiver is also used to receive the first DCI and the first demodulation reference signal, as well as the second DCI and the second demodulation reference signal corresponding to the first terminal. The processor is used for: The public information is scheduled according to the first DCI, and the public information is demodulated according to the first demodulation reference signal; The private information of the first terminal is scheduled according to the second DCI corresponding to the first terminal, and the private information of the first terminal is demodulated according to the second demodulation reference signal corresponding to the first terminal. The first DCI carries a first indication message, and / or the second DCI corresponding to the first terminal carries a second indication message corresponding to the first terminal. In the first indication message and / or the second indication message, the processor is specifically used for: If the first indication message and / or the second indication message indicate that the public information and the private information exist on the same time-frequency resource, the demodulated public information is removed according to the first DCI after demodulating the public information; Wherein, the first indication message is used to indicate whether the private information exists on the time-frequency resources of the public information, and the second indication message is used to indicate whether the public information exists on the time-frequency resources of the private information.

12. A network-side device, characterized in that, include: A processor, a memory, and a program stored in the memory and executable on the processor, wherein the program, when executed by the processor, implements the steps of the information transmission method as described in any one of claims 1 to 4.

13. A terminal, characterized in that, include: A processor, a memory, and a program stored in the memory and executable on the processor, wherein the program, when executed by the processor, implements the steps of the information transmission method as described in any one of claims 5 to 7.

14. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program that, when executed by a processor, implements the steps of the information transmission method as described in any one of claims 1 to 4; or, when executed by the processor, the computer program implements the steps of the information transmission method as described in any one of claims 5 to 7.

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